Margaret Ann Strickhausen v. Petrohawk Operating Company N/K/A BHP Billiton Petroleum (TxLa) Operating Company Petrohawk Properties, LP N/K/A BHP Billiton Petroleum Properties (N.A.),L.P. Segundo Navarro Drilling, Ltd. First Rock I, LLC EF Non-Op, LLC And CEU Hawkville, LLC Nka South Texas Shale, LLC ( 2018 )