Samson Exploration, LLC v. T. S. Reed Properties, Inc. ( 2015 )


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  •                                      In The
    Court of Appeals
    Ninth District of Texas at Beaumont
    _________________
    NO. 09-13-00366-CV
    _________________
    SAMSON EXPLORATION, LLC, Appellant
    V.
    T.S. REED PROPERTIES, INC., et al.
    Appellees
    ________________________________________________________________________
    On Appeal from the 60th District Court
    Jefferson County, Texas
    Trial Cause No. B-173,008
    ________________________________________________________________________
    MEMORANDUM OPINION
    We issued our original memorandum opinion in this cause on August 27,
    2015, and afterwards, the appellant and the appellees filed motions for rehearing.
    The court denies the motions for rehearing; however, the panel withdraws its
    opinion and judgment and issues this opinion and judgment in their stead.
    1
    In this oil and gas case, filed by several stakeholders with interests in two
    pooled gas units, we are asked to decide two principal issues. First, whether the
    stakeholders participating in one of the pooled units can recover damages from the
    operator of the unit when the operator amended the boundaries of the unit to
    exclude a well that was within the boundaries of the original unit, and where the
    stakeholders accepted royalties attributable to the amended unit without
    challenging the operator’s authority to amend the original unit’s boundaries.
    Second, whether the stakeholders in another unit, based on their claims for breach
    of contract, can recover damages from the operator due to the operator’s failure to
    pay royalties on oil and gas produced from a well that the operator contends was
    included in that unit by mistake.
    With respect to the stakeholders in the first unit, given their actions
    following the amendment to boundaries of the unit, we conclude they ratified the
    operator’s amendment to the boundaries of the first unit. Based on their ratification
    of the amendment to the unit, we hold they are entitled to recover nothing on their
    claims. With respect to the stakeholders in the second unit at issue in the appeal,
    and given the operator’s failure to file an amendment to the description defining
    the unit’s boundaries to correct its alleged mistake, we hold the stakeholders in that
    2
    unit can recover damages from the operator for its alleged breach of their leases.
    However, with respect to these stakeholders, we also conclude the trial court’s
    awards are excessive, as the awards include royalties on production that occurred
    before the date their unit first existed.
    Background
    This case involves numerous plaintiffs,1 three gas wells, and two pooled
    units, the first of which the operator amended to change the unit’s name and its
    1
    Not all of the plaintiffs before us in the appeal were parties to the suit when
    it was initially filed. The Plaintiff’s Tenth Amended Petition, filed in July 2012, is
    the live pleading before the court when the trial court rendered its final judgment.
    There were twenty-five parties to the suit at that time: (1) Thomas Klorer; (2) Gary
    Cruse (as executor of the Estate of Vivian Burch); (3) Mary Hyde; (4) Sallye Jones
    Keith; (5) The Simpson-Omohundro Foundation; (6) T.S. Reed Properties, Inc.; (7)
    Thomas Edwin Doran; (8) Florence Owens Dodington; (9) Joseph A. Owens II;
    (10) Roger Steven Holley; (11) Patricia Belden; (12) Valerie Klorer; (13) Cornelia
    Clark Akin; (14) Walter R. Taber Jr.; (15) William F. Taber; (16) Cecil Taber
    Ward; (17-19) Roger Craddock and Iris Klorer Craddock (Individually and as
    Trustees of the Craddock Family Trust); (20) Marlborough School; (21-22)
    Patricia Gardner Deland (Individually and as Independent Executrix of the John T.
    Gardner Estate); (23) the Sara Wilson Carlson Exempt Trust; (24) the Mark C.
    Wilson Grantor Trust; and (25) the William Andrew Fletcher Grantor Trust. The
    suits for the various trusts were filed by Capital One, N.A., as their trustee. Several
    stakeholders in the units, including the State of Texas, were never made parties to
    the suit. However, the record does not show that any of the parties ever claimed
    that any absent stakeholders were necessary parties, and no one ever objected to
    proceeding without them. See Kodiak Res., Inc. v. Smith, 
    361 S.W.3d 246
    , 249
    (Tex. App.—Beaumont 2012, no pet.) (noting, in the context of an oil royalty case,
    that since the adoption of Rule 39 of the Texas Rules of Civil Procedure, courts
    3
    boundaries. In the trial court, the following plaintiffs 2 sued Samson Exploration,
    LLC 3 based on their claims that they owned an interest in mineral leases that
    Samson pooled into the units at issue.
    generally refuse to treat the non-joinder of necessary parties as a defect that
    deprives a court of jurisdiction over the parties to the suit) (citing Cooper v. Tex.
    Gulf Indus., Inc., 
    513 S.W.2d 200
    , 203 (Tex. 1974)). Nonetheless, the Court’s
    opinion is not binding on any of the stakeholders in the units that were not parties
    when the final judgment was rendered.
    2
    We omit the names of any plaintiffs that sued if they were not parties at the
    time of the judgment because the list of names is voluminous and the claims of any
    plaintiffs that joined the suit that were not parties when the trial court rendered
    judgment are not relevant to the issues on appeal. Under the trial court’s final
    judgment, the following stakeholders prevailed on one or more of their claims: (1)
    Patricia Belden; (2-4) Roger Craddock and Iris Klorer Craddock, Individually and
    as Trustees of the Craddock Family Trust; (5) Thomas Klorer; (6) Valerie Klorer;
    (7) Marlborough School; (8) Simpson-Omohundro Foundation; (9) Capital One
    N.A., Trustee of the Sara Wilson Carlson Exempt Trust; (10) Capital One N.A.,
    Trustee of the Mark C. Wilson Grantor Trust; (11) Thomas Edwin Doran; (12)
    Gary Cruse, as Executor of the Estate of Vivian Burch; (13) Cornelia Clark Akin;
    (14) Patricia Gardner Deland, as Executrix of the John T. Gardner Estate; (15)
    Florence Owens Dodington; (16) Capital One, N.A., Trustee of the William
    Andrew Fletcher Trust; (17) Roger Steven Holley; (18) Sallye Jones Keith; (19)
    Joseph A. Owens II; (20) T.S. Reed Properties, Inc.; (21) Walter R. Taber, Jr.; (22)
    William F. Taber; and (23) Cecil Taber Ward. Mary Hyde, a party to the suit when
    the trial court rendered its final judgment, recovered nothing on her claims.
    However, Hyde is not a party to the appeal.
    3
    The trial court rendered judgment against Samson Exploration, LLC.
    However, when they filed their original petition, the plaintiffs sued Samson Lone
    Star, Limited Partnership. We are unable to locate a written stipulation in the
    record indicating that Samson Exploration, LLC acquired all of Samson Lone
    4
    Samson created the first of the units that are at issue in this appeal in 2001,
    when it filed a declaration creating the “Black Stone Minerals A No. 1 Gas Unit.”4
    In January 2002, Samson completed a second successful gas well within the
    existing boundaries of the Black Stone Unit on the Joyce DuJay lease. The well is
    perforated between 13,150 feet to 13,176 feet subsurface, so its gas is produced at
    a level that also falls within the boundaries of the Black Stone Unit’s pool. In 2002,
    after Black Stone refused consent to Samson’s attempt to pool its lease into the
    Black Stone Unit, Samson filed an amended declaration that changed the
    Star’s assets and liabilities, and the summary judgment motions do not address
    whether Samson Exploration, LLC is Samson Lone Star’s successor. Nonetheless,
    the parties all treat Samson Exploration LLC as Samson Lone Star’s successor, and
    none of the parties argue that Samson Exploration, LLC was not properly named or
    that it was not liable in the capacity it was sued. Therefore, for the purposes of this
    opinion, we assume that Samson Exploration, LLC is Samson Lone Star’s
    successor, and we refer to the entity “Samson.” Nonetheless, we expressly do not
    decide if Samson Exploration, LLC is Samson Lone Star’s successor, as that issue
    has not been brought before the Court and it is not at issue in the appeal.
    4
    Samson designated the Black Stone Unit by filing a declaration in Hardin
    County’s property records in March 2001. In June 2001, Samson successfully
    completed a gas well on property that had been leased to it by Black Stone
    Minerals Company, L.P. The well on the Black Stone lease, which will be referred
    to as the Black-Stone-lease well, was completed at a zone that falls within the
    boundaries of the Black Stone Unit. However, under Black Stone’s lease with
    Samson, Samson was required to have Black Stone’s written consent to pool the
    lease into a pooled unit. Black Stone would not give Samson written consent after
    Samson completed a successful producing well on its lease.
    5
    boundaries of the Black Stone Unit’s pool. In the amendment,5 Samson renamed
    the “Black Stone Minerals A No 1 Gas Unit” as the “Joyce DuJay No. 1 Gas
    Unit.” 6 Following the Black Stone Unit’s amendment, Samson did not attribute the
    gas produced by the Black-Stone-lease well to the amended and renamed Joyce
    DuJay Unit.
    In late 2002, Samson successfully completed a third gas well that was
    perforated from 12,197 to 12,343 feet, which is above the pool that is associated
    with the Joyce DuJay Unit. However, the third well is located on the Joyce DuJay
    lease, and the Joyce DuJay lease is one of the leases that is included in the Joyce
    5
    The February 20, 2002, amendment renamed the unit and altered the
    boundaries of the pool. Before the boundaries were amended, the pool associated
    with the Unit had boundaries of 6,000 to 13,800 feet. After the amendment, the
    pool associated with the renamed unit had boundaries of 12,400 feet and below.
    The amendment also renamed the Black Stone Unit as the “Joyce DuJay No. 1 Gas
    Unit,” and changed the number of surface acres in the original unit from 704
    surface acres to 570.962 surface acres, although the 570.962 acres is inside the
    boundaries of the original unit. By altering the pool’s depths, the amendment
    removed the zone produced by the Black-Stone-lease well (12,304 feet to 12,332
    feet) from the production that it subsequently attributed to the renamed Joyce
    DuJay Unit. Samson filed another amendment to the Joyce DuJay Unit in June
    2003, which added two leases to the Joyce DuJay Unit’s pool. However, the June
    2003 amendment did not further alter the boundaries associated with the amended
    unit’s pool.
    6
    In the opinion, we refer to the amended unit as the Joyce DuJay Unit.
    6
    DuJay Unit. Approximately ten months after completing the third well, Samson
    created the “Joyce DuJay A No. 1 Gas Unit,” 7 defining a pool consisting of 704
    acres that lies in Hardin and Jefferson counties, “provided such production occurs
    below a depth of 12,000 feet subsurface.” Based on the description in the
    document that Samson filed in creating the DuJay-A Unit, the DuJay-A Unit’s pool
    includes most of the leases and a significant portion of the zones that Samson
    previously defined for the Joyce DuJay Unit’s pool. The two units share the zone
    that is being produced by the well located on the Joyce DuJay lease, and the Joyce
    DuJay lease is pooled into both units.
    In 2004, six of the stakeholders in the Joyce DuJay Unit sued Samson
    claiming that Samson had breached its duties under leases by refusing to allocate
    any of the gas produced by the Black-Stone-lease well for their accounts.
    Subsequently, additional plaintiffs, some of them stakeholders in the Joyce DuJay
    7
    In the remainder of the opinion, we refer to this unit, created in July 2003,
    as the DuJay-A Unit. Although Samson created the unit after the date that it
    completed the well on the DuJay-A lease, the declaration creating the DuJay-A
    Unit states that it is “effective as of the date of first production of the [DuJay-A]
    well.”
    7
    Unit and some of them stakeholders in the DuJay-A Unit, joined the suit. 8 The
    DuJay-A Unit stakeholders claimed that Samson failed to comply with its contract
    obligations under the terms of their lease. All of the DuJay-A claimants based their
    claims on a lease between Samson and T.S. Reed Properties 9 and the declaration
    Samson filed when it created the DuJay-A Unit.
    8
    The following twelve Joyce DuJay claimants prevailed on one or more of
    their claims against Samson under trial court’s final judgment: (1) Patricia Belden;
    (2-4) Roger and Iris Craddock, Individually and as Trustees of the Craddock
    Family Trust; (5) Thomas Klorer; (6) Valerie Klorer; (7) Marlborough School; (8)
    Simpson-Omohundro Foundation; (9) the Sara Wilson Trust (Capital One N.A.,
    Trustee); (10) the Mark C. Wilson Grantor Trust (Capital One N.A., Trustee; (11)
    Thomas Edwin Doran; and (12) Gary Cruse, as Executor of the Estate of Vivian
    Burch. The following eleven DuJay-A claimants prevailed under the judgment: (1)
    Cornelia Clark Akin; (2) Patricia Gardner Deland, as Executrix of the John T.
    Gardner Estate; (3) Florence Owens Dodington; (4) the William Andrew Fletcher
    Trust (Capital One, N.A., Trustee); (5) Roger Steven Holley, (6) Sallye Jones
    Keith; (7) Joseph A. Owens II, (8) T.S. Reed Properties, (9) Walter R. Taber, Jr.,
    (10) William F. Taber, and (11) Cecil Taber Ward. The DuJay-A claimants filed a
    cross-appeal, alleging that the trial court failed to properly calculate the damages
    that resulted from Samson’s breach of their lease.
    9
    All of the DuJay-A claimants trace their interests in the DuJay-A Unit to a
    lease between Samson and T.S. Reed Properties. The record shows that in
    November 2001, T.S. Reed’s president leased T.S. Reed’s mineral interests in
    826.997 acres of land to Samson. In an August 2002 amendment, T.S. Reed gave
    Samson the right to pool 213.038 acres of its 826.996 acre tract into the DuJay-A
    Unit. In 2007, eight of the DuJay-A claimants, Cornelia Clark Akin; Florence
    Owens Dodington; the William Andrew Fletcher Trust (by Capitol One, N.A., as
    Trustee); Roger Steven Holley; Sallye Jones Keith (by Capitol One, N.A., as her
    attorney-in-fact); Joseph A. Owens II; Walter R. Taber, Jr.; and William F. Taber,
    executed agreements ratifying T.S. Reed’s 2001 lease and the 2002 amendment.
    8
    In a series of interlocutory summary judgment rulings between 2008 and
    2013, the trial court resolved the parties’ claims and defenses.10 In its final
    judgment, the trial court awarded the prevailing Joyce DuJay claimants damages
    on their breach of contract claims, basing the awards on the royalties the Joyce
    We find no written ratifications in the record from Patricia Gardner Deland, as
    executor of the Estate of John T. Gardner, or from Cecil Taber Ward. In their
    briefs, the parties treat the Estate of John T. Gardner and Cecil Taber Ward as if
    their respective interests are based on T.S. Reed’s lease, as amended. However, in
    their briefs, the parties do not identify the summary judgment evidence that shows
    that Patricia Deland or Cecil Ward ratified T.S. Reed’s lease or the lease’s
    amendment. Nonetheless, Samson does not argue that the trial court’s awards to
    Gardner’s estate and Cecil Ward should be reversed based on their failure to prove
    that they ratified Samson’s lease or the amendment to the lease with T.S. Reed
    Properties. Tex. R. App. P. 33.1, 38.1(f). Therefore, we do not address the claims
    of Gardner’s estate or Cecil Ward separately from those of the other DuJay-A
    claimants.
    10
    The first two interlocutory summary judgment orders, rendered in 2008,
    concerned some of the claims of the Joyce DuJay claimants and some of the claims
    of the DuJay-A claimants. The trial court rendered a third interlocutory summary
    judgment ruling in August 2012; in that order, the trial court resolved several more
    of the claims made by the DuJay-A claimants. In its fourth and fifth interlocutory
    summary judgment rulings, rendered in April 2013, the trial court granted, in part,
    the plaintiffs’ amended motion for final summary judgment, but it denied relief on
    some of the plaintiffs’ other claims. In its fifth interlocutory ruling, rendered in
    April 2013, the trial court denied Samson’s counterclaims. In July 2013, in a final
    judgment, the trial court resolved all remaining issues and incorporated its prior
    interlocutory summary judgment orders into a final order. In that judgment, which
    is the judgment that is before us on appeal, the trial court denied Samson’s
    counterclaims, and it awarded damages to twelve of the Joyce DuJay claimants and
    to eleven of the DuJay-A claimants.
    9
    DuJay claimants would have earned had Samson attributed production from the
    Black-Stone-lease well to the Joyce DuJay Unit. 11 The trial court awarded the
    DuJay-A claimants damages based on their breach of contract claims. The
    damages awards to the DuJay-A claimants are based on the royalties they would
    have derived from the unit had Samson allocated production from the well located
    on the Joyce DuJay lease to both the Joyce DuJay and DuJay-A Units.
    Samson and the DuJay-A claimants timely filed appeals; both complain
    about various aspects of the trial court’s final judgment. Tex. R. App. P. 26.1
    (Time to Perfect Appeal). Generally, Samson argues the trial court erred in
    granting judgment in the plaintiffs’ favor, and it contends the trial court should
    have granted its motion for summary judgment as to all of their claims.
    Alternatively, Samson argues that the trial court should have denied the motions
    for summary judgment filed by the Joyce DuJay and DuJay-A claimants because
    fact issues existed that require a trial. With respect to their cross-appeal, the DuJay-
    11
    The damage award does not include any damages based on the Black-
    Stone-lease well’s production between October 2012 and the date of judgment, nor
    does the award include anything based on the well’s future production. We assume
    that the trial court did not award damages for these periods because no evidence
    was introduced to prove the damages that resulted or would reasonably result to the
    Joyce DuJay claimants during those periods.
    10
    A claimants argue the trial court failed to properly calculate their respective awards
    under the provisions of the lease to which they all trace their interests.
    Standard of Review
    We review a trial court’s ruling on a motion for summary judgment using a
    de novo standard of review. See Provident Life & Accident Ins. Co. v. Knott, 
    128 S.W.3d 211
    , 215 (Tex. 2003). With respect to the Joyce DuJay and DuJay-A
    claimants’ motions for summary judgment, they were required to demonstrate to
    the trial court that no genuine issue of material fact existed, and to show that they
    were entitled to judgment as a matter of law. Tex. R. Civ. P. 166a(c); see also
    
    Knott, 128 S.W.3d at 216
    . On appeal, we review the summary-judgment record “in
    the light most favorable to the nonmovant, indulging every reasonable inference
    and resolving any doubts against the motion.” City of Keller v. Wilson, 
    168 S.W.3d 802
    , 824 (Tex. 2005). To view the evidence in that light, we credit evidence that is
    favorable to the party that lost the motion if reasonable jurors could, and we
    disregard evidence that contradicts the losing parties’ evidence unless the evidence
    cannot reasonably be disregarded. 
    Id. at 827.
    Evidence is conclusive only if the
    trial court, based on the evidence, could have reached only one conclusion from the
    11
    summary judgment evidence that was before it. See City of 
    Keller, 168 S.W.3d at 816
    .
    With respect to Samson’s motion for summary judgment, it was required, as
    a defendant moving for summary judgment, to conclusively negate at least one
    essential element on each of the plaintiffs’ causes of action, or through its own
    summary judgment evidence, it was required to conclusively establish each of the
    elements on an affirmative defense that would create a bar to the plaintiffs’
    recovery. See Sci. Spectrum, Inc. v. Martinez, 
    941 S.W.2d 910
    , 911 (Tex. 1997).
    To prevail on its traditional motion, Samson was required to demonstrate that no
    genuine issues of material fact existed that prevented the trial court from rendering
    judgment in its favor. Tex. R. Civ. P. 166a(c); Mann Frankfort Stein & Lipp
    Advisors, Inc. v. Fielding, 
    289 S.W.3d 844
    , 848 (Tex. 2009).
    When both the plaintiffs and defendants in a case move for summary
    judgment, and the trial court grants one motion and denies the other, all of the
    summary judgment evidence before the trial court is reviewed in the appeal to
    determine the questions that are presented by the competing motions. Mann
    
    Frankfort, 289 S.W.3d at 848
    . When possible, in cases involving cross-motions for
    12
    summary judgment, the appeals court is required to render the judgment the trial
    court should have rendered in the case. 
    Id. Ratification/Joyce DuJay
    Claimants
    According to Samson, the Joyce DuJay claimants ratified the amendment of
    the Black Stone Unit by accepting royalties that were paid to the stakeholders of
    the Joyce DuJay Unit based on the acreage within the amended unit’s boundaries.
    Samson contends that the Joyce DuJay claimants’ ratification of its amendment to
    the Black Stone Unit bars the Joyce DuJay claimants from a recovery on all of
    their claims. On appeal, Samson contends the trial court erred by failing to grant its
    motion for summary judgment because the summary judgment evidence
    conclusively establishes that the Joyce DuJay claimants ratified its decision to
    amend the Joyce DuJay Unit’s boundaries.
    In response to Samson’s defense of ratification, the Joyce DuJay claimants
    assert that Samson waived its right to complain about the trial court’s ruling in
    their favor on their breach of contract claims because it failed to timely assert its
    defense of ratification. The Joyce DuJay claimants note that Samson did not raise
    its ratification defense before the trial court ruled, in 2008, that they were entitled
    to prevail on their claims. In reply, Samson contends that it did not waive its
    13
    defense by virtue of any delays because it presented its defense and obtained a
    ruling on it before the date the trial court rendered judgment. Having secured a
    ruling on its claim before the trial court rendered judgment, Samson argues that it
    properly preserved its right to our review of the merits of the trial court’s ruling
    denying it any relief on its defense of ratification.
    First, we address the Joyce DuJay claimants’ argument that Samson’s failure
    to raise its ratification defense before the trial court ruled on its motion in 2008
    resulted in a waiver of the defense. See generally Tex. R. App. P. 33 (Preservation
    of Appellate Complaints). In this case, the record shows that Samson filed
    pleadings claiming ratification and obtained a ruling on its defense before the date
    the trial court’s judgment became final. See Tex. R. Civ. P. 301 (“Only one final
    judgment shall be rendered in any cause except where it is otherwise specially
    provided by law.”). Additionally, because the trial court’s 2008 ruling did not
    resolve all of the claims and defenses raised by all of the parties to the case, the
    2008 order granting the Joyce DuJay claimant’s motion for summary judgment
    was interlocutory. Consequently, the trial court was authorized to change the
    rulings it made before it lost jurisdiction over the case, including its 2008 ruling on
    the Joyce DuJay claimants’ motion. In other words, the court had the power to find
    14
    the Joyce DuJay claimants ratified the amended boundaries of the unit, even
    though it actually ruled to the contrary, denying that they had ratified the
    amendment to the unit. See Rush v. Barrios, 
    56 S.W.3d 88
    , 98 (Tex. App.—
    Houston [14th Dist.] 2001, pet. denied).
    Because the trial court’s 2008 order was interlocutory, and because Samson
    secured a ruling on its affirmative defense of ratification, the record shows that
    Samson presented its complaint to the trial court in a timely motion and that the
    trial court ruled on its request. See Tex. R. App. P. 33.1 (providing that to preserve
    error for appellate review, the complaining party must show that it presented its
    complaint to the trial court in a timely request, objection, or motion and that the
    trial court ruled on the request). We hold that Samson did not waive its right to
    appellate review regarding its defense of ratification.
    Next, we consider the law related to ratification and the evidence of the
    circumstances that relate to Samson’s decision to amend the Black Stone Unit. A
    doctrine of agency law, ratification is a common law doctrine that binds a person to
    another’s unauthorized act if the person who is arguably bound is aware of the
    other’s act, and, after becoming aware of the act, chooses to retain the benefits of
    the unauthorized act. See Willis v. Donnelly, 
    199 S.W.3d 262
    , 273 (Tex. 2006).
    15
    According to Samson, the Joyce DuJay claimants were notified of the amendment
    to the Black Stone Unit’s boundaries, and afterward, they accepted royalty
    payments that were calculated based on the boundaries established for the Joyce
    DuJay Unit, whose boundaries did not include the gas and condensate being
    produced by the Black-Stone-lease well. Additionally, according to Samson, the
    Joyce DuJay claimants never challenged its authority to amend the boundaries of
    the original unit.
    In cases that concern the purchase and sale of minerals and mineral interests,
    the doctrine of ratification is used to hold a party to the terms of an amended
    contract when the party complaining about the amendment accepted the benefits of
    the new agreement, even though it could have resisted doing so. See Fortune Prod.
    Co. v. Conoco, Inc., 
    52 S.W.3d 671
    , 676 (Tex. 2000) (“We agree with the courts
    below that there may be circumstances under which a party who was induced to
    enter a contract by fraud may ratify that contract in such a manner that a claim for
    damages is foreclosed.”); Thomson Oil Royalty, LLC v. Graham, 
    351 S.W.3d 162
    ,
    166 (Tex. App.—Tyler 2011, no pet.) (“A party that accepts changed terms of a
    contract is deemed to have made its own decision that those terms are just; if it had
    thought otherwise, it should have resisted.”).
    16
    In this case, it is undisputed that the Joyce DuJay claimants accepted
    royalties attributable to another well that Samson successfully completed on the
    Joyce DuJay lease that were calculated based on the smaller number of surface
    acres that are contained in the amended unit. The Joyce DuJay claimants also do
    not dispute that they never sought to have the amendment rescinded or to have it
    declared void, even though the amendment redefined the boundaries of the unit’s
    pool and changed the surface acres of their unit.
    In Hooks v. Samson Lone Star, Limited Partnership, 
    457 S.W.3d 52
    , 65-66
    (Tex. 2015), the Texas Supreme Court held that a group of similarly situated
    stakeholders in the Black Stone Unit, who through the amendment became
    stakeholders in the Joyce DuJay Unit, had ratified the same amendment that is at
    issue in this case. In Hooks, the similarly situated group of plaintiffs asserted that
    Samson owed them royalties based on the production from the Black-Stone-lease
    well. Like the Joyce DuJay claimants, the stakeholders in the Joyce DuJay Unit in
    Hooks were aware that Samson had amended the Black Stone Unit. After the unit’s
    amendment, the stakeholders in Hooks regularly accepted royalties on gas and
    condensate production that occurred from the Joyce DuJay Unit’s pool. 
    Id. Based on
    similar conduct as the conduct that is at issue here, the Texas Supreme Court
    17
    held that the stakeholders in Hooks could not claim they were due additional
    royalties based on the production from the Black-Stone-lease well which was no
    longer within the amended unit’s boundaries because by their acts, they had
    ratified the amendment to the Black Stone Unit. 
    Id. at 66.
    Under these
    circumstances, the Supreme Court rendered judgment in Samson’s favor based on
    the conclusive evidence before it of the stakeholders’ acts.
    After carefully reviewing the summary judgment evidence, we find no
    significant distinction between the acts of the stakeholders in the Joyce DuJay Unit
    that are at issue here and the acts the Supreme Court relied on in Hooks to
    conclude that by such acts, Samson’s amendment was ratified and had been
    accepted. Because the summary judgment evidence conclusively establishes that
    the Joyce DuJay claimants ratified the amendment to their unit, Samson was no
    longer obligated to attribute any of the production from the Black-Stone-lease well
    to the Joyce DuJay Unit. We reverse the principal and interest awards the trial
    court awarded to the Joyce DuJay claimants on their claims that are based on the
    18
    production of the Black-Stone-lease well, 12 and we render judgment in Samson’s
    favor with respect to these claims. Tex. R. App. P. 43.2(c).
    DuJay-A Claimants
    Contentions of the Parties
    Next, we turn to the claims of the DuJay-A claimants, which concern
    whether they are entitled to share in the production from a well 13 that produces in a
    zone that is common to the Joyce DuJay and DuJay-A Units’ pools. All of the
    DuJay-A claimants’ interest are derived through the T.S. Reed lease, which
    Samson pooled into the DuJay-A Unit. Additionally, the T.S. Reed lease is not one
    of the leases that Samson pooled into the Joyce DuJay Unit, so the minerals that lie
    underneath this acreage are included in the DuJay-A Unit’s pool. In the judgment,
    the DuJay-A claimants recovered on their breach of lease claim, which is based on
    12
    These awards are listed in the final judgment under a column that is
    labelled “Unpooling Order.”
    13
    The well on the Joyce DuJay lease is perforated between 13,150 feet and
    13,176 feet subsurface, which is within the zone shared by the pools based on the
    declarations that govern the boundaries of the Joyce DuJay and the DuJay-A Units.
    The zones the two pools do not share are comprised of a zone between 12,000 feet
    and 12,399 feet that lies above the Joyce DuJay-Unit’s pool, and a zone that lies
    beneath the T.S. Reed acreage that was pooled into the DuJay-A Unit. These two
    zones lie exclusively within the DuJay-A Unit’s pool.
    19
    Samson’s decision to attribute all of the gas production coming from the well that
    produces gas from a zone common solely to the Joyce DuJay Unit.
    In its appeal, Samson advances several arguments to support its claim that
    the trial court’s judgment in favor of the DuJay-A claimants should be reversed.
    First, Samson argues that the trial court erred in failing to apply the statute of
    limitations as a bar to the DuJay-A claimants’ breach of contract claims. Second,
    Samson contends that the trial court erred in rejecting its arguments that the
    doctrines of estoppel, ratification, and waiver applied to the DuJay-A stakeholders’
    claims. Third, Samson suggests that to require it to pay royalties on the production
    from the well on the Joyce DuJay lease to the unitholders of both the Joyce DuJay
    and DuJay-A Units is impracticable. Fourth, Samson asserts the trial court
    improperly construed the agreements when determining the boundaries of the
    DuJay-A Unit’s pool. It argues that a proper construction of the documents
    relevant to the boundaries of the DuJay-A Unit’s pool reveals that the two pools do
    not share a common zone. Fifth, Samson suggests that the trial court erred in
    failing to excuse what it characterizes as a mistaken description of the DuJay-A
    Unit’s boundaries. Sixth, and as an alternative to its arguments that suggest the
    20
    pools do not overlap, Samson argues that it is entitled to a trial on its claim seeking
    reimbursement for overpaying royalties to the Joyce DuJay claimants.
    The DuJay-A claimants contend the trial court did not err in granting a
    summary judgment in its favor on all of Samson’s defenses, including Samson’s
    claim for reimbursement. By cross-appeal, the DuJay-A claimants contend that the
    damages they were awarded are too small. According to the DuJay-A claimants,
    the trial court erred by discounting their awards based on their ownership of less
    than all of the minerals in the T.S. Reed tract.
    Limitations
    According to Samson, the four-year statute of limitations applies to the
    DuJay-A claimants’ suit. See Tex. Civ. Prac. & Rem. Code Ann. § 16.004 (West
    2002) (providing for a four-year limitations period for actions for debt). Based on a
    four-year limitations period, Samson argues that by July 2007, the DuJay-A
    claimants should have filed a pleading that gave Samson fair notice of their theory
    that Samson had breached the lease by failing to attribute any of the production
    from the well on the Joyce DuJay lease to the DuJay-A Unit. While Samson
    acknowledges that all of the DuJay-A claimants were parties to the suit before July
    2007, it contends that the pleadings filed by the DuJay-A claimants before July
    21
    2007 did not fairly assert a claim for breach on a theory involving the minerals
    being produced by the well on the Joyce DuJay lease, which is the theory under
    which the DuJay-A claimants ultimately, in 2013, recovered.
    The record shows that the DuJay-A claimants were parties to the case by
    November 16, 2006, the date they filed their Fifth Amended Original Petition.
    Under the Texas Rules of Civil Procedure, a pleading of a claim for relief is
    required to contain “a short statement of the cause of action sufficient to give fair
    notice of the claim involved[.]” Tex. R. Civ. P. 47. In this case, Samson challenges
    whether it had fair notice of the claim on which the DuJay-A claimants ultimately
    recovered. Samson contends the Fifth Amended petition did not give it fair notice
    of a breach of contract claim that was based on a claim regarding a well that was
    producing from a zone common to the pools of the Joyce DuJay and the DuJay-A
    Units.
    In their Fifth Amended Petition, the DuJay-A claimants alleged that Samson
    designated a zone for a unit without designating a lower boundary, they identified
    that production occurred in a zone produced by a well completed on the Joyce
    DuJay lease, they alleged that the Hardin County tracts that Samson pooled into
    the DuJay-A Unit include the same tracts that were pooled into the Joyce DuJay
    22
    Unit, and they alleged that Samson had breached its lease because it failed to pay
    them the royalties they were owed. In our opinion, the Fifth Amended petition
    raises a claim for nonpayment of royalties that is consistent with the claim on
    which the trial court awarded damages.14 We hold that the Fifth Amended Petition
    relates to the claims that the DuJay-A claimants raised in their live pleading, their
    Tenth Amended Petition.
    The Tenth Amended Petition contains more specific pleadings regarding the
    DuJay-A claimants’ theory that Samson had breached its lease by refusing to
    allocate any of the production occurring from the well on the Joyce DuJay lease to
    the DuJay-A Unit. Section 16.068 of the Texas Civil Practice and Remedies Code
    creates a relation back rule for claims, as it provides:
    If a filed pleading relates to a cause of action, cross action,
    counterclaim, or defense that is not subject to a plea of limitation
    when the pleading is filed, a subsequent amendment or supplement to
    the pleading that changes the facts or grounds of liability or defense is
    not subject to a plea of limitation unless the amendment or
    supplement is wholly based on a new, distinct, or different transaction
    or occurrence.
    14
    Samson’s limitations arguments are based on whether the allegations in
    the Fifth Amended Petition gave it notice of the claim on which the DuJay-A
    claimants recovered.
    
    23 Tex. Civ
    . Prac. & Rem. Code Ann. § 16.068 (West 2015). In our opinion, the
    claims in the Fifth Amended Petition are not wholly based on different transactions
    or occurrences than those that are described by the Tenth Amended Petition. See
    Lexington Ins. Co. v. Daybreak Exp., Inc., 
    393 S.W.3d 242
    , 244-45 (Tex. 2013)
    (explaining that claims that are not wholly based upon different transactions or
    occurrences are not barred if the more recently filed pleading relates to the same
    occurrence and damages asserted in older pleadings filed before the proscriptive
    period runs). Because the claims alleged in the DuJay-A claimants’ Fifth Amended
    Petition were broad enough to encompass the claim on which they ultimately
    recovered, Samson’s limitations arguments are without merit.
    Estoppel, Ratification, and Waiver
    According to Samson, the summary judgment evidence was conclusive or
    raised fact issues on its defenses alleging theories of estoppel, ratification, and
    waiver. Samson contends that the evidence shows: (1) it advised the DuJay-A
    claimants that they had no interest in the well located on the Joyce DuJay lease, (2)
    the DuJay-A claimants expressly agreed to pool 213.038 acres of their land into a
    unit that it created “in order to form the Unit for the [DuJay-A] Unit Well,” (3)
    24
    Samson told the DuJay-A claimants, by payment letters, 15 which it sent in lieu of a
    division order, that it had completed a well on the DuJay-A Unit as a producing
    gas well, and that thereafter, (4) all of the DuJay-A claimants “accepted royalty
    payments from Samson solely for production from the [] well” located on the
    DuJay-A lease.
    Samson discusses its defenses of waiver, ratification, and estoppel as a
    single group as if the three theories are all based on the same elements; its brief
    does not address the elements of the defenses, which are not identical, separately.
    Consequently, we interpret Samson’s argument regarding these defenses as
    asserting a defense of quasi-estoppel, a doctrine that “precludes a party from
    asserting, to another’s disadvantage, a right inconsistent with a position previously
    taken.” Lopez v. Muñoz, Hockema & Reed, L.L.P., 
    22 S.W.3d 857
    , 864 (Tex.
    2000). “The doctrine applies when it would be unconscionable to allow a party to
    maintain a position inconsistent with one to which the party acquiesced, or from
    15
    In our review of the summary judgment evidence, we find only eight of
    the DuJay-A claimants signed division orders that reference the well on the DuJay-
    A lease. The orders do not reference the well on the Joyce DuJay lease. The
    division orders relied on by Samson and found in the record were signed by
    Cornelia Clark Akin, Walter R. Taber Jr., William F. Taber, Florence Owens
    Dodington, Joseph A. Owens II, Roger Steven Holley, the William Andrew
    Fletcher Trust (by Capital One, N.A., its trustee), and Sallye Jones Keith (by
    Capital One, N.A., as her agent).
    25
    which the party accepted a benefit.” Cimarron Country Prop. Owners Ass’n v.
    Keen, 
    117 S.W.3d 509
    , 511 (Tex. App.—Beaumont 2003, no pet.).
    Samson relies heavily on the Texas Supreme Court’s decision in Hooks v.
    Samson Lone Star Limited Partnership and the First Court of Appeals’ decision in
    that same case, which the Supreme Court reversed, to support its quasi-estoppel
    arguments. See Samson Lone Star, Ltd. P’ship v. Hooks, 
    389 S.W.3d 409
    (Tex.
    App.—Houston [1st Dist.] 2012), rev’d in part, Hooks v. Samson Lone Star, Ltd.
    P’ship, 
    457 S.W.3d 52
    (Tex. 2015). However, there are significant differences
    between the facts in Hooks, which concerned the Black Stone Unit and Samson’s
    amendment of that unit and the facts regarding the actions of the parties as related
    to the DuJay-A Unit. See Hooks v. Samson Lone Star, Ltd. 
    P’ship, 457 S.W.3d at 65-66
    .
    Unlike the facts that surround Samson’s amendment to the original Black
    Stone Unit, Samson never filed an amendment in the property records of Hardin or
    Jefferson County to change the boundaries of the pool that created the DuJay-A
    Unit. Thus, unlike Hooks, Samson never clearly placed the DuJay-A claimants on
    notice that it was offering them another bargain. See 
    id. Instead, Samson
    acts as if
    its decision to create overlapping units should simply be overlooked, even though
    26
    it never filed a document to amend the boundaries of the DuJay-A Unit to correct
    its alleged mistake. Instead, by allocating all of the production from the well that
    produces from a common zone to only the Joyce DuJay Unit, Samson simply
    ignores its own filing as if the pool it described created boundaries different than
    those reflected by its filings.
    Samson also argues that by cashing their royalty checks, the DuJay-A
    claimants acted in a manner that is inconsistent with the terms of the division
    orders that are in the record that is before us. The division orders relevant to the
    DuJay-A Unit share the following language, which states: “THIS DIVISION
    ORDER DOES NOT AMEND ANY LEASE OR OPERATING AGREEMENT
    BETWEEN THE INTEREST OWNER AND THE PAYOR, THE LESSEE, OR
    THE OPERATOR, OR ANY OTHER CONTRACTS FOR THE PURCHASE OF
    OIL, GAS, OR OTHER HYDROCARBONS.” Given this language, we are not
    persuaded an act of cashing a royalty check is conduct that is inconsistent with a
    claim that the check was not calculated in accordance with the terms of the parties’
    written agreement, their lease. Additionally, the royalty checks in the summary
    judgment record do not contain any language indicating the checks were tendered
    in full and final settlement of the royalties that were then due. Cf. Yelderman v.
    27
    McCarthy, 
    474 S.W.2d 781
    , 783-84 (Tex. Civ. App.—Houston [1st Dist.] 1971,
    writ ref’d n.r.e.) (holding that in an action to recover royalties, where the checks
    contained language indicating the check was being tendered as payment in full,
    that the lessor’s notation on the checks, stating the check was being accepted as
    partial payment only, could not vary the language the issuer had placed on the
    check).
    Finally, in this case, Samson never amended the declaration that it filed with
    respect to the boundaries of the DuJay-A Unit’s pool. Instead, even after the suit
    was filed, and Samson was placed on notice of the claims that it was not properly
    allocating production in the common zone to both units, Samson did not suspend
    the disputed royalties pending the outcome of the case. Instead, it proceeded as if
    the DuJay-A Unit’s pool did not overlap with the Joyce DuJay Unit’s pool.
    We conclude that Samson calculated that it would derive a greater benefit
    from refusing to amend the boundaries of the DuJay-A Unit’s pool to correct its
    alleged mistake. Given that circumstance, it is not unconscionable that Samson be
    required to answer in damages based strictly on the DuJay-A claimant’s theory that
    Samson had breached the T.S. Reed lease. We hold that there is no dispute on any
    material fact regarding the elements of a claim of quasi-estoppel, and that under
    28
    the circumstances of this case, equitable relief is not proper, expedient, or
    necessary. See State v. Tex. Pet Foods, Inc., 
    591 S.W.2d 800
    , 803 (Tex. 1979)
    (explaining that the jury decides if there are questions of fact in dispute but that it
    does not determine the expediency, necessity, or propriety of equitable relief);
    
    Cimarron, 117 S.W.3d at 512
    . We hold the trial court did not err granting the
    DuJay-A claimants’ motion for summary judgment on Samson’s claims based on
    waiver, ratification, and estoppel.
    Impracticability
    Samson argues that performing under the terms of its written agreement was
    impossible16 because the law does not authorize it to create pools that share a
    16
    In its brief, Samson does not characterize its impossibility argument as an
    affirmative defense; instead, it argues that the judgment should be reversed
    because the trial court committed error by construing its designation and the T.S.
    Reed lease in a manner that resulted in the creation of a pool that shares a zone in
    common with a pool previously created for another unit. While Samson presented
    this argument to the trial court as part of its response to the DuJay-A claimants’
    motion for summary judgment, Samson’s argument essentially asserts a defense
    that claims enforcing the contract is impracticable. However, Samson did not plead
    impracticability as a defense in its live pleading. See Tex. R. Civ. P. 94 (requiring
    that a party plead various affirmative defenses, including “any other matter
    constituting an avoidance or affirmative defense”); Tex. Beef Cattle Co. v. Green,
    
    921 S.W.2d 203
    , 212 (Tex. 1996) (noting that affirmative defenses seek to
    establish independent reasons why the plaintiff should not recover). Nevertheless,
    the DuJay-A claimants never objected in the trial court that Samson’s defense
    claiming impracticability was never pled. Under the circumstances in this case, we
    29
    common zone. However, it cites no statute that prohibits it from creating such a
    pool, and it cites no cases holding that a lessee with broad pooling authority cannot
    exercise its authority in such a manner.
    In response to Samson’s claim of impracticability, 17 the DuJay-A claimants
    argue that the pooling authority provision of their lease does not prohibit Samson
    conclude that the defense of impracticability was an issue the parties tried by
    consent, and that Samson did not waive its right to assert the defense by failing to
    plead it in its answer. See DeBord v. Muller, 
    446 S.W.2d 299
    (Tex. 1969) (holding
    that a defendant’s affirmative defense raised in a motion but not in the answer was
    not fatal to its argument that the summary judgment before the court required the
    trial court’s judgment be reversed); see also Roark v. Stallworth Oil & Gas, Inc.,
    
    813 S.W.2d 492
    , 495 (Tex. 1991) (noting that claims or defenses that are not pled
    but tried by express or implied consent are treated as if they were raised by the
    pleadings).
    17
    With respect to its claim of impracticability, Samson asserts Hooks applies
    as the law of the case with respect to the DuJay-A claims. “The ‘law of the case’
    doctrine is defined as that principle under which questions of law decided on
    appeal to a court of last resort will govern the case throughout its subsequent
    stages.” Hudson v. Wakefield, 
    711 S.W.2d 628
    , 630 (Tex. 1986). The law of the
    case doctrine is discretionary with the court, and does not apply at a “later stage of
    litigation that presents different parties, different issues, or more fully developed
    facts.” Smith v. Allstate Indem. Co., No. 09-01-348-CV, 
    2002 WL 31627974
    , at *1
    (Tex. App.—Beaumont Nov. 21, 2002, pet. denied) (not designated for
    publication); see also Harris Cnty. Flood Control Dist. v. Kerr, 
    445 S.W.3d 242
    ,
    252-53 (Tex. App.—Houston [1st Dist.] 2013), aff’d, No. 13-0303, 
    2015 WL 3641517
    , *6 (Tex. June 12, 2015) (explaining that the law of the case doctrine did
    not apply, where a subsequent appeal of the same case involved different parties
    and different facts); Pitman v. Lightfoot, 
    937 S.W.2d 496
    , 513 (Tex. App.—San
    Antonio 1996, writ denied) (noting that the appellate court’s prior opinion that
    30
    from forming a pool for the DuJay-A Unit that shares a common zone with another
    unit’s pool. Relying on Southland Royalty Company v. Humble Oil & Refining
    Company, 
    249 S.W.2d 914
    , 916-17 (Tex. 1952), and Sohio Petroleum Company v.
    Jurek, 
    248 S.W.2d 294
    , 298 (Tex. Civ. App.—Fort Worth 1952, writ ref’d n.r.e.),
    the DuJay-A claimants point to the declarations that Samson filed for the Joyce
    DuJay and DuJay-A Units that created pools with a large area that overlaps.
    According to the DuJay-A claimants, Samson could create units with common
    zones because the law “does not require a cross-conveyance between the lessors.”
    limitations barred suit against certain shareholders was not law of the case in a
    subsequent appeal regarding other shareholders). In Hooks, the Supreme Court did
    not address the facts that concern Samson’s formation of the DuJay-A Unit. 
    Hooks, 457 S.W.3d at 66
    . In Hooks, the Supreme Court determined that those plaintiffs
    ratified Samson’s amendment to the Black Stone Unit but the claims at issue in this
    part of the case concern another unit whose boundaries have never been amended.
    See 
    id. Moreover, in
    Hooks, the Supreme Court did not decide if pooled units could
    overlap. 
    Id. However, Samson
    contends that the Court of Appeals in Hooks
    implicitly determined that units cannot overlap, and argues that the DuJay-A
    claimants theory that pools may contain a common zone ignores the law of the
    case as decided in the intermediate appellate court. See 
    Hooks, 389 S.W.3d at 431
    -
    34. The parties in this case were not parties to the judgment that was appealed in
    Hooks. See 
    Hooks, 389 S.W.3d at 409
    . Thus, Samson’s argument for applying the
    law of the case doctrine to claims that concern the formation of a unit not at issue
    in Hooks are not persuasive, as that case involved different parties and with respect
    to the formation of the DuJay-A Unit, facts that were not present in Hooks. 
    Id. 31 Significantly,
    the case at bar was not tried as a trespass to try title case;
    instead, the trial court awarded contract damages under the DuJay-A claimants’
    breach of contract theory. Additionally, the trial court denied all claims for
    declaratory and injunctive relief.18 Therefore, we need not resolve whether the
    pooling of the lessors’ mineral interests results in a cross-conveyance of the
    lessors’ property rights because title to the property is not what is at issue here.
    Nonetheless, we are required to address whether the T.S. Reed lease
    restricted Samson’s authority to create the pool that Samson described in the
    declaration that it filed to create the DuJay-A Unit. Whether Samson was
    authorized to create the pool at issue concerns a matter of contract law. See
    Wagner & Brown, Ltd. v. Sheppard, 
    282 S.W.3d 419
    , 424 (Tex. 2008) (noting that
    “oil and gas leases in general, and pooling clauses in particular, are a matter of
    contract”). Therefore, we look to the language of the parties’ lease and the lease
    amendment to determine the scope of Samson’s authority regarding its pooling of
    the T.S. Reed lease.
    18
    Although the DuJay-A claimants filed a cross-appeal, the arguments they
    make in their cross-appeal do not contend the trial court erred by denying their
    claims for declaratory or injunctive relief.
    32
    Under the lease between Samson and T.S. Reed, Samson could not pool T.S.
    Reed’s tract unless all of the acreage of the tract was pooled. In August 2002,
    Samson and T.S. Reed agreed to amend the pooling provision, and T.S. Reed’s
    president gave “Samson the right to pool 213.038 acres of land . . . to form the Unit
    for the [DuJay-A] Unit Well.” However, the amendment does not describe the
    boundaries of the proposed unit. When the lease was amended in 2002, Samson
    had not yet designated the boundaries of the DuJay-A Unit’s pool, although it is
    clear that the pool was to include the well on the DuJay-A lease. However, there is
    no indication in the amendment that the well on the DuJay-A lease was the only
    well that Samson intended to include in the pool. Significantly, the only
    restrictions on Samson’s pooling authority regarding the 213-acre tract are that
    Samson was required to pool the entire 213-acre tract and the tract was to be
    pooled into the DuJay-A Unit.19
    In this case, none of the parties has claimed that Samson exercised its
    pooling authority in bad faith, and Samson never amended the boundaries of the
    19
    While the stakeholders in another unit might have a cause of action
    against Samson if Samson were shown to have exercised its pooling authority in
    bad faith, the Joyce DuJay stakeholders who were parties to the suit did not file a
    claim against Samson asserting that it had exercised its pooling authority in bad
    faith.
    33
    DuJay-A Unit’s pool. Because there is no claim the tract was pooled in bad faith,
    and in light of the broad pooling authority T.S. Reed gave Samson in the
    amendment to pool the tract, we conclude that the parties’ agreement did not
    restrict Samson from pooling the lease into a pool that overlapped the pool of
    another preexisting unit. See Se. Pipe Line Co., Inc. v. Tichacek, 
    997 S.W.2d 166
    ,
    170 (Tex. 1999) (“A lessee’s pooling decision will be upheld unless the lessee
    pools in bad faith.”).
    Next, we consider Samson’s argument that enforcing its obligations under its
    lease, which requires it to account for production that occurred in a shared zone, is
    impossible. Under Texas law, a defendant may defend a claim for breach of
    contract by showing that the obligation it undertook to perform was rendered
    impracticable. See Centex Corp. v. Dalton, 
    840 S.W.2d 952
    , 954 (Tex. 1992)
    (relying on the defense of supervening impracticability, as stated in the
    Restatement (Second) of Contracts § 261 (1981), the court held that the buyer’s
    contract with a consultant was unenforceable because a governmental regulation,
    prohibiting the buyer’s performance, invalidated the contract). However, the
    doctrine requires that the breaching party be without fault. 
    Id. In this
    case, the
    summary judgment evidence shows that Samson and its agents were the only
    34
    decision makers with respect to creating the boundaries of the pools at issue. The
    Restatement provision cited by the Texas Supreme Court in Centex provides:
    § 261. Discharge by Supervening Impracticability
    Where, after a contract is made, a party’s performance is made
    impracticable without his fault by the occurrence of an event the non-
    occurrence of which was a basic assumption on which the contract
    was made, his duty to render that performance is discharged, unless
    the language or the circumstances indicate the contrary.
    Restatement (Second) of Contracts § 261 (1981); see 
    Centex, 840 S.W.2d at 954
    .
    The sections that follow, Sections 262-266, address the various contexts in which
    the defense applies to excuse a defendant’s breach of its duty to perform the
    obligations required by its contract. Restatement (Second) of Contracts §§ 262
    (Death or Incapacity of Person Necessary for Performance), 263 (Destruction,
    Deterioration or Failure to Come into Existence of Thing Necessary for
    Performance), 264 (Prevention by Governmental Regulation or Order), 265
    (Discharge by Supervening Frustration), 266 (Existing Impracticability or
    Frustration) (1981).
    Under the circumstances presented in this case, none of the summary
    judgment evidence shows that any of the DuJay-A claimants were involved in the
    decisions Samson made to establish the boundaries of the pools at issue, nor was
    35
    there any evidence that the DuJay-A claimants were on notice of the unit’s
    boundaries before Samson filed the document that declared them. Additionally, not
    any of the Restatement exceptions apply, as the condition frustrating Samson’s
    performance is wholly based on its own fault in creating overlapping pools. 
    Id. Under the
    circumstances shown by the summary judgment evidence, the trial court
    did not err when it granted the DuJay-A claimants’ motion for summary judgment
    on Samson’s defense of impossibility.
    Construing T.S. Reed Lease to Avoid Overlapping Pools
    Samson argues the T.S. Reed lease should be construed so the boundaries of
    the DuJay-A Unit’s pool are established as existing at 12,000 feet to 12,399 feet
    subsurface. In response, the DuJay-A claimants contend that the provisions in the
    T.S. Reed lease are not relevant to the boundaries that Samson established for the
    DuJay-A Unit’s pool.
    Prior to the amendment previously discussed, T.S. Reed’s lease required that
    each production unit “shall be limited to a depth of one hundred feet (100’) below
    the total depth to which the first productive well is drilled on the unit, which depth
    shall be determined by a Schlumberger, Halliburton, or other electrical log, which
    Lessee shall cause to be run.” Samson notes that the well on the DuJay-A lease
    36
    was drilled to a depth of 12,500 feet, and it relies on the above provisions to
    conclude that T.S. Reed’s lease “created an automatic depth limitation on the
    [DuJay-A Unit] of 12,600 [feet].”
    Samson’s argument is presented in an effort to rewrite the unambiguous
    boundaries of the pool that it declared when it created the DuJay-A Unit.
    Additionally, if the question is one of authority, the DuJay-A claimants ratified
    Samson’s act to create the overlapping pools when they sued it to enforce the
    boundaries Samson created, even if Samson did create a pool that their lease did
    not authorize it to create. See Montgomery v. Rittersbacher, 
    424 S.W.2d 210
    , 215
    (Tex. 1968).
    Nevertheless, even if the terms of the original T.S. Reed lease are relevant to
    determining the boundaries of the DuJay-A Unit’s pool, Samson’s argument does
    not prevent the pools from overlapping so that they share the zone of production
    that is at issue here. The first productive well in the DuJay-A Unit is the well
    located on the Joyce DuJay lease, as it was completed before the well was
    completed on the DuJay-A lease. Thus, the bottom for the DuJay-A Unit’s pool
    would still overlap the zone that includes the level being produced by the well on
    the Joyce DuJay lease. While Samson raises other arguments regarding other
    37
    provisions in the original T.S. Reed lease in an effort to rewrite the boundaries for
    the pool that it declared for the DuJay-A Unit, Samson never explains how any of
    the restrictions upon which it relies survived the lease’s 2002 amendment that
    specifically authorized Samson to pool the 213 acre tract at issue into the DuJay-A
    Unit.
    Given the unambiguous language in the unit declaration that established the
    boundaries of the DuJay-A Unit’s pool, the trial court properly rejected Samson’s
    arguments that the language in other documents was relevant to establishing the
    pool’s boundaries. See 
    Sheppard, 282 S.W.3d at 422
    (“A lease is not necessarily
    required for pooling; mineral owners can join a pool even if no lease exists.”). We
    overrule Samson’s arguments that suggest the trial court did not properly construe
    the documents relevant to defining the DuJay-A Unit’s pool.
    Scrivener’s Error
    Samson also argues that the trial court erred by failing to reform the
    boundaries of the DuJay-A Unit’s pool because it mistakenly created a pool for the
    unit that shared a zone with another pool. Samson suggests the mistake that was
    made to define the boundaries of the pool was that of its attorney, and it suggests
    38
    that the document it filed should have indicated that the pool was bottomed at
    approximately 12,400 feet.
    In response, the DuJay-A claimants argue that pool’s boundaries cannot be
    reformed because Samson failed to request they be reformed within four years of
    the date that Samson declared the pool to exist. 20 The DuJay-A claimants assert
    Samson’s request to reform the size of the DuJay-A Unit’s pool is barred by the
    four-year statute of limitations. Additionally, the DuJay-A claimants contend that
    the summary judgment evidence shows that Samson acted without their
    involvement in designating the boundaries of the DuJay-A Unit’s pool, and they
    conclude that Samson’s alleged mistake in defining the pool’s size was not mutual.
    They further contend that Samson was required but failed to show that (1) the
    contract would be unconscionable, (2) the mistake concerned a material feature of
    20
    In its Seventh Amended Answer and Counterclaim, filed February 2013,
    one of Samson’s counterclaims alleges its failure to include a lower depth for the
    DuJay-A Unit’s pool designation was the result of a scrivener’s error. In response
    to Samson’s counterclaim asserting its claim of scrivener’s error, the DuJay-A
    claimants filed a motion for partial summary judgment, based on both traditional
    and no-evidence grounds. In their motion, they asked the trial court to deny
    Samson’s claim because Samson failed to raise it sooner. In its final judgment,
    rendered in July 2013, the trial court granted the motion for partial summary
    judgment, and it denied Samson relief on its counterclaims, without stating the
    reasons for its rulings.
    39
    the contract, (3) the mistake occurred despite Samson’s exercise of ordinary care,
    and (4) the rescission of the agreement would not be prejudicial.
    First, we consider Samson’s claim that it should be allowed to avoid the
    terms of its declaration, which defined the boundaries of the pool, based on the
    doctrine of mutual mistake.21 See Tex. R. Civ. P. 166a(i) (providing that if the
    motion states the elements of the claim on which there is no evidence, the court
    must grant the motion unless the responding party “produces summary judgment
    evidence raising a genuine issue of material fact”). To demonstrate that a mutual
    mistake exists, a party must prove “the true agreement of the parties[, and] [it]
    must prove that the provision erroneously written into the instrument was there by
    mutual mistake.” Brown v. Havard, 
    593 S.W.2d 939
    , 943 (Tex. 1980) (citing Nat’l
    Resort Communities v. Cain, 
    526 S.W.2d 510
    (Tex. 1975)). Thus, to establish that
    a mistake was mutual, there must be evidence that shows both parties were acting
    under the same misunderstanding regarding the same material fact. See Smith-
    Gilbard v. Perry, 
    332 S.W.3d 709
    , 713 (Tex. App.—Dallas 2011, no pet.).
    21
    The DuJay-A claimants’ no-evidence motion alleges that Samson had no
    evidence showing that the alleged mistake in describing the boundaries of the pool
    associated with the DuJay-A Unit was mutual.
    40
    In its response to the DuJay-A claimants’ no-evidence motion, Samson did
    not present any evidence showing that the DuJay-A claimants were acting under
    any misunderstanding about the depth of the pool either when their leases were
    pooled or when Samson filed the document that declared the pool’s boundaries.
    Instead, the summary judgment evidence shows that the mistake was Samson’s
    alone.
    With respect to the circumstances explaining why the boundaries are
    declared as stated in the document that Samson filed, Samson’s summary judgment
    evidence includes the unsworn declarations 22 of Eric Lindahl, the attorney who
    drafted the designation creating the DuJay-A Unit, and Richard Koenig, Samson’s
    land manager. This evidence shows that Samson and Samson’s agents were
    responsible for creating the document that contains the boundaries of the DuJay-A
    Unit’s pool. Lindahl’s unsworn declaration indicates that he sent Samson a draft
    designation of the gas unit for the DuJay-A Unit’s pool in April 2003. The April
    2003 draft describes the top of the pool at 6,000 feet subsurface, and the draft
    designates a lower boundary for the pool of 12,400 feet subsurface. In June 2003,
    22
    Section 132.001(a) of the Texas Civil Practice and Remedies Code allows
    unsworn declarations to be used in lieu of affidavits in civil cases. See Tex. Civ.
    Prac. & Rem. Code Ann. § 132.001(a) (West Supp. 2014).
    41
    Lindahl sent Koenig a revised designation for the unit: the revised designation
    changed the depth of the pool’s lower boundary from 12,400 feet “to depths below
    12,000 feet subsurface.” In his declaration, Lindahl indicates that he never
    intended to create a pool that overlapped with Joyce DuJay Unit’s pool; he further
    declared, “I do not remember why the change was requested.” While Lindahl
    indicated that he could not recall the reasons for the change in the boundaries from
    the boundaries reflected in a prior draft, Lindahl states that “it would have been a
    mistake to include depths in the [DuJay-A] Unit that were already included in the
    [Joyce DuJay Unit].” According to Lindahl: “It was a scrivener’s error for the unit
    designation of the [DuJay-A] Unit not to have stated a depth limitation of 12,400
    [feet].” None of the statements in Lindahl’s unsworn declaration show that any of
    the DuJay-A claimants were involved in the drafting of the documents that led to
    the creation of the DuJay-A Unit’s pool.
    Koenig’s unsworn declaration also reveals no involvement of the DuJay-A
    claimants in the drafting of the documents to create the DuJay-A Unit’s pool. His
    declaration, like Lindahl’s, shows that Samson and its agents were solely
    responsible for the filing of the document declaring the pool’s boundaries.
    According to Koenig, Samson always intended “to designate the [DuJay-A Unit] to
    42
    have a bottom limitation of 12,400 feet subsurface.” Koenig’s declaration is silent
    about the intentions of the DuJay-A claimants and if they were consulted on sizing
    the DuJay-A Unit’s pool. In his declaration, Koenig explains that Samson’s file on
    the DuJay-A Unit contains an interoffice memo, dated May 2003, that contains the
    notation “‘[r]e-routed 7-2-03 12,000’ & below.’” Koenig concludes that it was a
    mistake not to include a lower boundary for the DuJay-A Unit’s pool, but his
    declaration does not further discuss why Samson made the decision to change the
    pool’s lower depth to 12,000 feet and below.
    Generally, “[a] mistake by only one party to an agreement, not known to or
    induced by acts of the other party will not constitute grounds for relief.” Johnson v.
    Snell, 
    504 S.W.2d 397
    , 399 (Tex. 1973). Additionally, the acts of Samson’s
    attorney are attributed to Samson. See Gavenda v. Strata Energy, Inc., 
    705 S.W.2d 690
    , 693 (Tex. 1986). Lindahl’s suggestion that he committed a scrivener’s error is
    also no evidence to show that the alleged mistake is one that was made by the
    parties mutually. See Elizondo v. Krist, 
    415 S.W.3d 259
    , 264 (Tex. 2013) (“[A]n
    attorney-expert, however well qualified, cannot defeat summary judgment if there
    are fatal gaps in his analysis[.]”); McIntyre v. Ramirez, 
    109 S.W.3d 741
    , 749-50
    (Tex. 2003) (“A conclusory statement of an expert witness is insufficient to create
    43
    a question of fact to defeat summary judgment.”). Brown v. Havard, 
    593 S.W.2d 939
    , 942 (Tex. 1980). While the declarations of Samson’s attorney and its land
    manager suggest that Samson made a mistake, the declarations are no evidence to
    show that the mistake was one that was mutual. We conclude that the trial court
    did not err by granting the DuJay-A claimants’ no-evidence motion with respect to
    Samson’s claimed mistake.23
    23
    While Samson’s brief challenges the trial court’s ruling on its request to
    reform the boundaries of the pool, its brief fails to explicitly and clearly assign
    error on the basis that the instrument should be reformed based on a claim of
    unilateral mistake. Generally, equitable relief is available to reform a contract on
    the basis that it contains a unilateral mistake if
    (1) the mistake is of so great a consequence that to enforce the
    contract as made would be unconscionable; (2) the mistake relates to a
    material feature of the contract; (3) the mistake must have been made
    regardless of the exercise of ordinary care; and (4) the parties can be
    placed in status quo in the equity sense, i.e., rescission must not result
    in prejudice to the other party except for the loss of his bargain.
    James T. Taylor & Son, Inc. v. Arlington Indep. School Dist., 
    335 S.W.2d 371
    , 373
    (Tex. 1960). The Texas Supreme Court has repeatedly cautioned against
    addressing unassigned error. See, e.g., Pat Baker Co. v. Wilson, 
    971 S.W.2d 447
    ,
    450 (Tex. 1998); Allright, Inc. v. Pearson, 
    735 S.W.2d 240
    (Tex. 1987). “Except
    for fundamental error, appellate courts are not authorized to consider issues not
    properly raised by the parties.” Mack Trucks, Inc. v. Tamez, 
    206 S.W.3d 572
    , 577
    (Tex. 2006) (citing In re B.L.D., 
    113 S.W.3d 340
    , 350-52 (Tex. 2003)). In its brief,
    Samson does not rely on any cases that were decided based on a claim of unilateral
    mistake; instead, it relies on Gail v. Berry, 
    343 S.W.3d 520
    , 524-25 (Tex. App.—
    Eastland 2011, pet. denied), a case that involves a claim of mutual mistake. Thus,
    44
    Reimbursement from Joyce DuJay Stakeholders
    Samson also asked the trial court to order the Joyce DuJay claimants to
    reimburse it for a portion of the damages the DuJay-A claimants were awarded in
    the judgment. According to Samson, the Joyce DuJay stakeholders were unjustly
    enriched because they benefitted from Samson’s decision to attribute all of the
    production from the well on the Joyce DuJay lease to the Joyce DuJay Unit.
    Samson contends the Joyce DuJay claimants 24 should be required to disgorge
    $437,284, the amount that Samson asserts they received in excess of what they
    would have been paid had it attributed the production from the well on the Joyce
    DuJay lease to the stakeholders in both the Joyce DuJay and the DuJay-A Units.
    whether the trial court erred with respect to denying relief on Samson’s theory of
    unilateral mistake is inadequately briefed, so the claim is not further discussed. See
    Tex. R. App. P. 38.1(f), (h); Tex. R. App. P. 44.1.
    24
    Samson asserts the trial court erred in denying summary judgment on its
    claim of unjust enrichment against the following parties that owned leases that
    were pooled into the Joyce DuJay Unit: Patricia Belden ($36,145); Roger and Iris
    Craddock ($36,145); Thomas Klorer ($36,145); Valerie Klorer ($36,145);
    Marlborough School ($80,693); Simpson-Omohundro Foundation ($41,404); Sara
    Carlson Trust ($2,713); Mark Wilson Trust ($1,356); Thomas Doran ($16,285);
    and the Estate of Vivian Burch ($150,253). The amounts noted are those that
    Samson alleges it was entitled to recover against the Joyce-DuJay-stakeholder
    parties, rounded to the nearest dollar.
    45
    In response to Samson’s equitable reimbursement claim, the Joyce DuJay
    claimants, as counter-defendants, filed a motion for summary judgment on
    traditional and no-evidence grounds. See Tex. R. Civ. P. 166a(c), 166a(i). The trial
    court granted the Joyce DuJay motion that asserted Samson was not entitled to
    recover on its claim of equitable reimbursement without specifying the grounds for
    its ruling. When a trial court grants a motion for summary judgment without
    specifying the grounds on which the motion is granted, the appeals court must
    affirm the trial court’s ruling if any of the theories presented in the summary
    judgment motion have merit. See Provident Life & Accident Ins. Co. v. Knott, 
    128 S.W.3d 211
    , 216 (Tex. 2003).
    On appeal, Samson argues the trial court’s ruling should be reversed because
    it established its claim for money had and received as a matter of law, or because
    the evidence in the summary judgment proceedings relevant to its claim presented
    issues of fact that should be resolved by a trial. A party asserting a claim for money
    had and received must prove that the opposing party is holding money that in
    equity and good conscience belongs to it. See Staats v. Miller, 
    243 S.W.2d 686
    ,
    687-88 (Tex. 1951); Edwards v. Mid-Continent Office Distrib., L.P., 
    252 S.W.3d 833
    , 837 (Tex. App.—Dallas 2008, pet. denied).
    46
    First, we address Samson’s argument that it presented more than a scintilla
    of evidence to support its claim that the Joyce DuJay claimants had money that
    belongs to it. See Ford Motor Co. v. Ridgway, 
    135 S.W.3d 598
    , 600 (Tex. 2004).
    In their no-evidence motion, the Joyce DuJay claimants challenged Samson to
    produce evidence that they had money that in equity belonged to Samson. In
    response to their no-evidence motion, Samson referred the trial court to several
    declarations signed by Samson’s chief financial officer, C. Philip Tholen. Samson
    contends that Tholen’s declarations demonstrate that the Joyce DuJay claimants
    received greater royalties than they would have received had Samson attributed the
    production from the well on the Joyce DuJay lease to both the Joyce DuJay and the
    DuJay-A Units.
    In our opinion, Tholen’s declarations are some evidence showing that the
    royalty payments to the Joyce DuJay claimants would have been smaller had
    Samson attributed the production for the well to both units.25 In his January 2013
    declaration, Tholen states that Samson has been paying the total amount of royalty
    owed pursuant to its division orders from the date the well on the Joyce DuJay
    25
    The Joyce DuJay claimants did not assert a bad faith pooling claim against
    Samson in the litigation that led to the appeal, and they have not argued that
    Samson could not create overlapping pools.
    47
    lease first produced minerals. Tholen’s declaration then explains that because
    Samson attributed all of the production from the well on the Joyce DuJay lease to
    the stakeholders in the Joyce DuJay Unit, they received more than they would have
    received in royalties had the production been attributed to both of the units.
    Tholen’s declaration includes various schedules and letters, and these demonstrate
    how much money the Joyce DuJay claimants received over what they would have
    been paid had Samson allocated the production from the well on the Joyce DuJay
    lease to both units. According to Tholen, the Joyce DuJay claimants received
    $437,284 more than they would have otherwise received. We conclude there is
    some evidence supporting Samson’s claim of money had and received.
    Next, we consider the grounds on which the Joyce DuJay claimants obtained
    summary judgment on their traditional motion. See 
    Knott, 128 S.W.3d at 216
    ; see
    also 
    Ridgway, 135 S.W.3d at 600
    . With respect to their traditional motion, the
    Joyce DuJay claimants argued that Samson’s decision to allocate the production
    was a decision that it made voluntarily. The Joyce DuJay claimants point out that
    Samson continued to allocate the production from the well on the Joyce DuJay
    lease solely to the Joyce DuJay Unit even after it was presented with claims and
    48
    sued over whether it was properly calculating the royalties due the stakeholders in
    the two units.
    In part, as a defense to Samson’s claim for reimbursement, the Joyce DuJay
    stakeholders’ motion for summary judgment relies on the voluntary-payment rule.
    The voluntary-payment rule operates as a defense to a claim seeking restitution,
    and can be stated as follows: “‘Money voluntarily paid on a claim of right, with
    full knowledge of all the facts, in the absence of fraud, deception, duress, or
    compulsion, cannot be recovered back merely because the party at the time of
    payment was ignorant of or mistook the law as to his liability.’” BMG Direct
    Mktg., Inc. v. Peake, 
    178 S.W.3d 763
    , 768 (Tex. 2005) (citing Pennell v. United
    Ins. Co., 
    243 S.W.2d 572
    , 576 (1951) (quoting 40 Am. Jur. § 205 (1942)).
    The summary judgment motions reflect Samson’s confidence in its position
    that the courts would revise the boundaries of the DuJay-A Unit’s pool to create a
    pool that did share any zones with the Joyce DuJay Unit’s pool. The summary
    judgment evidence also shows that although Samson asked the court to revise the
    boundaries of the DuJay-A Unit’s pool, it never exercised its authority to amend
    the designation of the declaration, even though the designation that it filed
    expressly provided that Samson reserved the right to do so “in order to correct any
    49
    error herein[.]” We conclude that the summary judgment evidence conclusively
    shows that Samson’s payments were voluntary and that Samson made the
    payments to the Joyce DuJay claimants with full knowledge of the fact that it had
    created units that shared significant areas of their pools, including the zone being
    produced by one of its wells.
    Samson did not allege that any of the Joyce DuJay claimants were guilty of
    any acts of fraud, that it paid the royalties under duress, or that it was compelled to
    pay royalties over its objection to doing so. Instead, Samson continued to pay the
    royalties at issue to the Joyce DuJay claimants after it became involved in this
    litigation, which questioned whether it had properly accounted for the royalties
    between the two units. Under the circumstances, the summary judgment evidence
    conclusively established that Samson’s payments of royalties to the Joyce DuJay
    claimants were voluntary. See 
    Pennell, 243 S.W.2d at 576
    . We hold that the trial
    court did not err in granting the Joyce DuJay claimants’ traditional motion for
    summary judgment on the grounds that Samson’s payments were voluntary.
    50
    Damages
    NPRI Parties
    In its appeal, Samson contends the trial court erred when it concluded that
    eight of the parties (NPRI parties), 26 stakeholders in the DuJay-A Unit through
    their interests as nonparticipating royalty owners in the T.S. Reed lease, were
    entitled to collect interest on the royalties that Samson ultimately acknowledged
    that it owed and paid to them as stakeholders in the DuJay-A Unit. According to
    Samson, the awards to the NPRI parties are excessive because the awards include
    interest calculated from January 2002, the date the well on the Joyce DuJay lease
    first began producing minerals. Samson contends the interest awards should have
    been calculated from October 2007, the date the NPRI parties agreed with T.S.
    Reed’s decision to allow Samson to pool its 213 acre tract into the DuJay-A Unit.
    In response, the NPRI parties argue that Samson waived any error with respect to
    26
    The eight parties that own the nonparticipating royalties at issue are
    Cornelia Clark Akin, Florence Owens Dodington, the William Andrew Fletcher
    Trust, Roger Steven Holley, Sallye Jones Keith, Joseph A. Owens II, Walter R.
    Taber Jr., and William F. Taber. All of them trace their interest in the DuJay-A
    Unit’s royalties to Samson’s lease and the lease amendment with T.S. Reed. The
    record shows that in October 2007, the attorney for the NPRI parties sent Samson
    written ratifications of the T.S. Reed lease and the lease’s amendment.
    51
    the manner the trial court calculated their interest awards because Samson failed to
    timely object in the trial court to the manner in which their awards were calculated.
    Before evaluating the merits of Samson’s argument that the awards were
    excessive, we consider the NPRI parties’ suggestion that Samson failed to properly
    preserve its argument on this issue for our review on appeal. To support their claim
    of waiver, the NPRI parties rely on City of Houston v. Clear Creek Basin
    Authority, 
    589 S.W.2d 671
    (Tex. 1979). However, in Clear Creek, the party that
    moved for summary judgment was the defendant, and the error preservation
    argument concerned whether the plaintiff waived its argument on appeal regarding
    a theory of liability that it failed to present at trial. 
    Id. at 672-75.
    In this case, the question is whether the NPRI parties, as the parties who
    moved for summary judgment, conclusively proved the amounts of their accrued
    unpaid royalties, which form the royalty amounts on which their awards of interest
    are based.27 We construe Samson’s challenge to the awards as a challenge to the
    sufficiency of the evidence supporting the awards. As such, Samson is allowed to
    raise its complaint that the awards are excessive for the first time on appeal. See
    27
    The awards are listed in the trial court judgment under a column labeled
    “Accrued Unpaid Royalties Order,” but the awards are actually for interest on the
    unpaid royalties because Samson paid what it owed in past royalties after the NPRI
    owners signed written agreements to ratify Samson’s pooling of their interests.
    52
    Tex. R. App. P. 33.1(d) (allowing complaints regarding the legal or factual
    sufficiency of the evidence in nonjury cases, including complaints that the
    damages are excessive, to “be made for the first time on appeal in the complaining
    party’s brief”).
    In evaluating whether the evidence on the awards to the NPRI parties was
    conclusive, we note that their awards are based on royalties that are calculated
    beginning with the date the well on the DuJay-A lease first began to produce gas.
    However, the NPRI owners did not act to ratify the T.S. Reed lease or the lease’s
    amendment for several years after the well on the DuJay-A lease first produced
    gas.28
    In Montgomery v. Rittersbacher, the Texas Supreme Court explained that an
    NPRI owner may ratify a lease that the holder of the executive rights made with a
    lessee by signing the lease or by filing suit to enforce the 
    lease. 424 S.W.2d at 214
    -
    15. In resolving an appeal that arose from a non-jury trial, the Montgomery Court
    28
    Six of the eight NPRI owners, Cornelia Clark Akin, Florence Owens
    Dodington, Roger Steven Holley, Joseph A. Owens II, Walter R. Taber Jr. and
    William F. Taber, joined the suit on June 3, 2005. The two other NPRI owners, the
    William Andrew Fletcher Trust and Sallye Jones Keith, joined the suit on
    November 16, 2006. Whether the NPRI parties’ damage awards should be assessed
    based on the date that Samson received their written ratifications of the T.S. Reed
    lease or the date that each NPRI party joined the suit is a matter that the trial court
    should resolve based on the parties’ arguments concerning that matter on remand.
    53
    noted that the NPRI owner “ratified the lease in question by filing suit;
    consequently, he is only entitled to receive royalties accruing from and after [ ] the
    date this suit was filed.” 
    Id. at 215.
    In this case, the interest awards were calculated based on royalties that
    would have become due assuming the NPRI parties ratified the T.S. Reed lease as
    of September 2002; however, by September 2002, they had not done so and would
    not do so for years. Therefore, the interest awards are excessive because they
    exceed the amounts supported by the summary judgment evidence. We reverse the
    interest awards with respect to the NPRI parties, and we remand these claims to the
    trial court for further proceedings.
    Accrued Unpaid Royalties Awards to the Simpson-Omohundro Foundation and the
    Marlborough School
    Samson also challenges the amounts the trial court awarded in interest to
    two of the stakeholders in the Joyce DuJay Unit, the Simpson-Omohundro
    Foundation and the Marlborough School. 29 According to Samson, the trial court’s
    awards of interest to these two parties should be reversed because by statute, an
    operator of a well does not owe interest on delays that are attributable to the time
    29
    These awards are listed under a column labeled in the judgment as
    “Accrued Unpaid Royalties Order.”
    54
    the operator must spend to determine whether a party claiming an interest in the
    minerals to a well actually own the interest that is claimed.
    Ultimately, Samson recognized that the Simpson-Omohundro Foundation
    and the Marlborough School were the rightful owners and entitled to participate in
    the distributions that it had made to the stakeholders in the Joyce DuJay Unit.
    While it paid the past due royalties that it determined that it owed on the
    production from the well on the Joyce DuJay lease, Samson refused to pay the
    Simpson-Omohundro Foundation and the Marlborough School interest.
    The Simpson-Omohundro Foundation’s and the Marlborough School’s
    claims are based on a lease between Samson, the Simpson-Omohundro
    Foundation, and Nancy Long. 30 Samson argues that it does not owe interest
    because “there were title issues as to these parties’ interests.” According to
    Samson, the lease excused its obligation to pay interest on suspended royalties if
    the royalties were suspended due to title questions. In this case, the lease between
    30
    Nancy Omohundro Long died during the pendency of the suit; her will
    named the Marlborough School as the beneficiary of the residue of her estate,
    which included the oil and gas lease that Long executed in 2001 in Samson’s favor.
    In 2010, the trial court granted the Marlborough School’s request asking that the
    Marlborough School be named as a plaintiff in the action, substituting the school in
    the case as one of the plaintiffs in place of the executor of Long’s estate. Samson
    did not challenge the Marlborough School’s standing to recover as the beneficiary
    of Long’s will.
    55
    Samson, the Simpson-Omohundro Foundation, and Long contains the following
    provision:
    Royalties payable under the terms hereof shall be due and
    payable to Lessor within sixty (60) days after the sale of any produce
    produced hereunder. Any royalties unpaid within sixty (60) days after
    the sale of any product produced hereunder, including suspended
    royalties, shall bear interest at the prevailing New York prime rare
    until paid.
    We find nothing in the lease to support Samson’s argument that its
    obligation to pay interest on suspended royalties was excused. The summary
    judgment evidence does not show that there was a bona fide dispute regarding the
    Simpson-Omohundro Foundation’s or Nancy Long’s title to the minerals in the
    tract that Long and the Foundation leased to Samson. There was also no evidence
    of a bona fide dispute that Long, through her will, had not given her interest in the
    lease to the Marlborough School.
    Samson relies on section 91.402(b) of the Texas Natural Resources Code to
    justify its decision to refuse to pay any interest on the royalties that it placed in
    suspense. See Tex. Nat. Res. Code Ann. § 91.402(b) (West 2011) (allowing
    payment to be withheld without interest under certain circumstances, such as when
    there is reasonable doubt that the payee has clear title to the interest in the proceeds
    of production). According to the Simpson-Omohundro Foundation and the
    56
    Marlborough School, the Texas Natural Resources Code does not cancel the terms
    requiring Samson to pay interest on suspended royalties.
    We do not read Section 91.402(b) to restrict the freedom of the parties to a
    lease to contract for interest payments on suspended royalties. See 
    id. § 91.402(b).
    In this case, the leases required that Samson pay interest on suspended royalties
    after having determined that the royalties were due. We hold that Samson’s
    argument reading Section 91.402(b) as canceling the interest terms of the lease is
    without merit.
    With respect to the judgment’s award of interest on suspended royalties,31
    we affirm the trial court’s awards to the Simpson-Omohundro Foundation and the
    Marlborough School. We overrule Samson’s arguments that the trial court erred in
    awarding the Simpson-Omohundro Foundation and the Marlborough School
    interest on suspended royalties.
    31
    The Simpson-Omohundro Foundation and the Marlborough School were
    also awarded principal and interest on their claims that they were damaged by
    Samson’s failure to pay them royalties based on the production from the Black-
    Stone-lease well under a column in the final judgment that is labeled “Unpooling
    Order.” We have reversed these awards and rendered judgment on them in
    Samson’s favor.
    57
    Remaining Damages Arguments
    Samson raises three additional arguments that suggest the evidence does not
    support the amount the trial court awarded in damages to the DuJay-A claimants.32
    First, Samson argues that the trial court erroneously calculated the awards because
    the awards include damages that were based on royalties before the T.S. Reed lease
    became effective in April 2002. Second, and alternatively, Samson contends that
    the trial court’s awards include damages based on royalties for gas produced before
    the DuJay-A Unit existed. Third, Samson argues the trial court erred by awarding
    interest to the DuJay-A claimants based on the rates of interest that exceed the
    rates of interest that are found in section 91.403 of the Texas Natural Resources
    Code. Tex. Nat. Res. Code Ann. § 91.403 (West 2011).
    32
    The damage awards challenged in this section of Samson’s brief concern
    the principal and interest that the trial court awarded to T.S. Reed Properties,
    Cornelia Clark Akin, Patricia Gardner Deland, Florence Owens Dodington, the
    William Andrew Fletcher Trust, Roger Steven Holley, Sallye Jones Keith, Joseph
    A. Owens II, William R. Taber, Jr., William F. Taber, and Cecil Taber Ward on
    their claims alleging that Samson failed to attribute any of the production from the
    well on the Joyce DuJay lease to the DuJay-A Unit. The awards are listed under a
    column in the final judgment that is labeled “Tract 1 Order.”
    58
    In resolving whether the trial court properly calculated the royalty payments
    at issue, we look to the terms of the parties’ lease. Tittizer v. Union Gas Corp., 
    171 S.W.3d 857
    , 860 (Tex. 2005). The T.S. Reed lease established the deadlines by
    which royalties became due.33 Significantly, nothing in the lease indicates that the
    parties made the deadline by which Samson was required to tender royalties
    contingent on the date the lease became effective. Samson’s argument that no
    royalties were earned prior to April 2002 is not supported by the language in the
    lease.
    Samson also argues that the trial court’s damages awards include damages
    for production that dates from January 2002, despite the fact that the DuJay-A Unit
    was created months later and the filing that created the unit made the unit effective
    as of first production from the well on the DuJay-A lease, a well that Samson did
    not complete until September 2002. See generally 
    Hooks, 457 S.W.3d at 65
    (noting
    that the language in a unit designation made the designation of the unit effective as
    of date of first production). However, the designation Samson filed to create the
    33
    Section IV of the T.S. Reed Properties lease, executed in November 2001,
    contains an express provision that addresses Samson’s obligation to pay royalties.
    Under the lease, the royalties “that may become due hereunder” were required to
    be paid on the last day of the month following the month of production for oil and
    before the last day of the second month for the production of gas.
    59
    DuJay-A Unit declares that the Unit is “effective as of the date of first production
    of the [DuJay-A] Well,” even though the declaration was actually filed after the
    date the well on the DuJay-A lease began producing gas. From the information in
    the summary judgment evidence, it appears that the well on the DuJay-A lease first
    began producing gas on October 13, 2002. 34
    In this case, the trial court’s damages awards include damages that are
    calculated based on the royalties the DuJay-A claimants were owed on gas
    produced before the date the DuJay-A Unit existed. We agree with Samson that the
    damages awarded to the DuJay-A claimants exceed the amounts the summary
    judgment evidence supports. We reverse the principal and interest awards to the
    DuJay-A claimants because the awards are excessive, and we remand the case for
    further proceedings so the awards can be calculated properly.
    Third, with respect to the damages award, Samson also contends that the
    DuJay-A claimants were awarded interest at rates that are higher than the rates
    allowed by Texas law. According to Samson, the prime rate of interest, at the time,
    exceeded the interest rate found in section 91.403 of the Texas Natural Resources
    34
    We have identified the date of first production on the well on the DuJay-A
    lease from a report that Samson filed with a regulatory agency. However, on
    remand, the parties may provide the trial court with additional evidence, if needed,
    to further clarify this date.
    60
    Code. Tex. Nat. Res. Code Ann. § 91.403 (West 2011) (providing for the payment
    of interest at “two percentage points above the percentage rate charged on loans to
    depository institutions by the New York Federal Reserve Bank, unless a different
    rate of interest is specified in a written agreement between payor and payee”).
    Under the T.S. Reed lease, which provides a rate of interest that Samson was
    obligated to pay on royalties, the parties agreed that Samson would pay interest at
    “the prime rate of interest at Chase-Manhattan Bank in New York City, New York,
    plus 2% (not to exceed legal Texas interest rate)[.]” According to the DuJay-A
    claimants, the “not to exceed” language of the provision was intended to reference
    the maximum interest allowable under section 303.009 of the Texas Finance Code.
    See Tex. Fin. Code Ann. § 303.009 (West Supp. 2014) (providing a maximum
    ceiling for interest rates that vary, based on sections 303.009(a)-(f), from eighteen
    percent to twenty-eight percent a year).
    In our opinion, the “not to exceed” provision of the lease was intended to
    reference the Texas Finance Code, not the Texas Natural Resource Code. Under
    the Texas Natural Resource Code, the interest rate provided by that Code does not
    apply if the parties have specified a rate of interest under their written agreement.
    See Tex. Nat. Res. Code Ann. § 91.403(a). The T.S. Reed lease specifies a rate of
    61
    interest, so the parties presumably did not intend for the provisions in the Texas
    Natural Resource Code to apply. 
    Id. The Texas
    Finance Code creates a maximum rate of interest that generally
    applies to all contracts, unless the parties have provided for another rate that is
    specified by the contract. See Tex. Fin. Code Ann. art. § 302.001(b) (West 2006);
    
    id. § 303.001
    (West. Supp. 2014). Given that the Texas Finance Code provides for
    a maximum rate of interest unless some other maximum rate is provided for by
    contract, and that the parties specified a rate of interest that was to apply to past
    due royalties that became due, we conclude that “not to exceed” provision refers to
    the maximum interest rate provided under the Texas Finance Code.
    Samson does not argue that the interest rates applied by the trial court were
    rates in excess of the ceilings found in the Texas Finance Code. We conclude
    Samson’s argument that the trial court applied the wrong rate of interest to be
    without merit, and it is overruled. Nevertheless, as the interest awards were based
    on awards that were excessive for the reason we have explained, the interest
    awards to the DuJay-A claimants are also reversed and remanded for further
    proceedings consistent with the Court’s opinion.
    62
    Cross-Appeal
    In a cross-appeal, the DuJay-A claimants argue that the trial court’s awards
    underestimate the damages they conclusively proved that they suffered based on
    Samson’s breach. According to the DuJay-A claimants, the trial court erred by
    adjusting their damages to reflect the fact that they do not own all of the minerals
    on the 213 acre tract that Samson leased. In response, Samson contends the lease
    required the trial court to account for the DuJay-A claimant’s partial ownership of
    the minerals to the tract.
    Section VIII(b) of the T.S. Reed Properties lease provides that Samson was
    to compute the royalty on production from wells within the pooled unit as follows:
    (b) Computing Royalties. For the purpose of computing the
    royalties to which owners of royalties and payments out of production
    shall be entitled on production of oil and gas, or either of them, from
    the pooled unit, there shall be allocated to the land covered by this
    lease and included in said unit a pro rata portion of the oil and gas, or
    either of them, produced from the pooled unit after deducting that
    used for operations on the pooled unit. Such allocation shall be on an
    acreage basis, that is, there shall be allocated to the acreage covered
    by this lease and included in the pooled unit that pro rata portion of
    the oil and gas, or either of them, produced from the pooled unit
    which the number of surface acres covered by this lease and included
    in the pooled unit bears to the total number of surface areas included
    in the pooled unit. Royalties hereunder shall be computed on the
    portion of such production, whether it be oil and gas, or either of
    them, so allocated to the land covered by this lease and included in the
    unit, just as though such production were from such land.
    63
    In addition to this provision, the lease between Samson and T.S. Reed includes a
    proportionate reduction clause. Section XIII, the proportionate reduction clause,
    provides:
    [I]f this lease covers a less interest in the oil and gas in all or any part
    of the leased premises than the entire undivided fee simple estate, then
    the royalties, delay rental, and other monies accruing from any part as
    to which this lease covers less than such full interest shall be paid only
    in the proportion which the interest therein covered by this lease bears
    to the whole or undivided fee simple estate therein.
    The DuJay-A claimants contend that section XIII does not apply because
    T.S. Reed Properties leased only the “net mineral acres” to Samson when it leased
    the tract. While the attachments to the lease do describe the net mineral acres in the
    tract that T.S. Reed Properties owned, the lease also has a proportionate reduction
    clause that applies to the royalties due to the lessor under the lease. Essentially, the
    DuJay-A claimants argue that the proportionate reduction clause is superfluous.
    T.S. Reed relies primarily on Texas Co. v. Parks, 
    247 S.W.2d 179
    (Tex. Civ.
    App.—Fort Worth 1952, writ ref’d n.r.e), to support its construction of the lease. In
    Parks, the Fort Worth Court of Appeals held that a proportionate reduction clause
    did not apply to reduce the lessor’s obligation to pay delay rentals of $160, yearly.
    
    Id. at 182.
    Given the purpose of the delay rental provision, and that it was to be
    64
    paid yearly, the Parks Court concluded that the agreement required the lessor pay
    “an annual rental of $160 for their interest conveyed.” 
    Id. While the
    DuJay-A
    claimants are correct that the Parks Court refused to reduce the delay rentals based
    on the proportionate reduction clause of the lease, Parks is a case that involved
    delay rentals, not royalties. 
    Id. In this
    lease, the proportionate reduction clause
    specifically applies to both royalties and delay rentals. We conclude that Parks is
    not relevant to the construction of the lease terms at issue here.
    With respect to the T.S. Reed lease, the description of the tract in a
    document the parties attached to the lease describes the tract as “all that certain
    land,” which is then described in another exhibit to the lease. The exhibit
    referenced by the attachment describes the tract’s surface acreage, the survey
    where the tract is located, the abstract number associated with the tract, the volume
    and page number of the deed records where a deed describing the tract can be
    found, and T.S. Reed’s net mineral interest in the tract. In other words, the exhibit
    is descriptive of the property conveyed; it does not alter the parties’ bargain that
    T.S. Reed was to be paid royalties on the only minerals that it owned and leased in
    the tract.
    65
    The Texas Supreme Court has explained that “‘[l]and’ is the physical earth
    in its natural state, while an estate in land is a legal unit of ownership in the
    physical land.” Averyt v. Grande, Inc., 
    717 S.W.2d 891
    , 894 (Tex. 1986) (citing 1
    Thompson, THOMPSON ON REAL PROPERTY § 52 (1939)). Given the language of the
    T.S. Reed Properties lease, the lease conveyed to Samson the right to use the entire
    surface for the purpose of exploring and producing oil and gas. Looking at the
    lease as a whole, from the granting clause to the reservation clause, it is evident
    that the term “all that certain land” does not refer to T.S. Reed’s mineral estate but
    to the entire tract. Compare King v. First Nat’l Bank of Wichita Falls, 
    192 S.W.2d 260
    , 263 (Tex. 1946).
    Although Samson and the DuJay-A claimants interpret the lease differently,
    neither argues that the proportionate reduction provision of the lease is ambiguous.
    When an oil and gas lease is unambiguous, the lease must be enforced based on its
    unambiguous terms. 
    Tittizer, 171 S.W.3d at 860
    . We hold that the trial court did
    not misconstrue the lease, and that it properly applied the proportionate reduction
    clause in calculating the DuJay-A claimants’ damages. The DuJay-A claimants’
    issue in its cross-appeal is overruled.
    66
    Conclusion
    We reverse and render judgment in favor of Samson with respect to the trial
    court’s order granting awards to Patricia Belden; Roger Craddock and Iris Klorer
    Craddock, Individually and as Trustees of the Craddock Family Trust; Thomas
    Klorer; Valerie Klorer; Marlborough School, Simpson-Omohundro Foundation,
    the Sara Wilson Carlson Exempt Trust, through Capital One, N.A., its trustee; the
    Mark C. Wilson Grantor Trust, through Capital One, N.A., its trustee; Thomas
    Edwin Doran; and Gary Cruse, as Executor of the Estate of Vivian Burch.35
    However, with respect to the trial court’s awards for interest on suspended
    royalties to the Simpson-Omohundro Foundation and the Marlborough School, the
    trial court’s awards are affirmed. 36
    We also reverse all of the trial court’s awards to the DuJay-A claimants
    because the awards are excessive, and they are remanded to the trial court for
    further proceedings consistent with the Court’s opinion. Finally, with respect to
    those parties to the judgment who did not appeal, the judgment is affirmed.
    35
    These awards are listed under the column in the final judgment that is
    labeled “Unpooling Order.”
    36
    These two awards are listed under the column in the final judgment that is
    labelled “Accrued Unpaid Royalties Order.”
    67
    AFFIRMED IN PART, REVERSED AND RENDERED IN PART,
    REVERSED AND REMANDED IN PART.
    _________________________________
    HOLLIS HORTON
    Justice
    Submitted on May 29, 2014
    Opinion Delivered October 22, 2015
    Before McKeithen, C.J., Kreger, and Horton, JJ.
    68