• Zodiac Exploration Corp.
• QR Energy, LP
• NGAS Hunter, LLC
• Williston Hunter ND, LLC
• MHR Acquisition Co III, LLC
• SinoTech Energy Ltd
• Rio Bravo Oil, Inc.
• Foothills Exploration, Inc.
• VOC Energy Trust Units of Beneficial Interest
• Hunter Disposal, LLC
• Triad Hunter, LLC
• Eagle Ford Hunter, Inc.
• VOC Brazos Energy Partners, LP
• Arabella Exploration, Inc.
• Texas South Energy Inc
• Lone Pine Resources Inc.
• BPZ Lote XIX S.R.L.
• BPZ Lote XXIII S.R.L.
• BPZ Lote XXII S.R.L.
• BPZ Lote Z-1 S.R.L.
• Empresa Electrica Nueva Esperanza S.R.L.
• Endeavor Pipeline, Inc.
• Diamond Blue Drilling Co.
• SandRidge Mississippian Trust I
• Civitas Resources Inc.
• Great White Energy Services, Inc.
• Kosmos Energy Ltd.
• Chaparral Exploration, L.L.C.
• Roadrunner Drilling, L.L.C.
• Breitburn Florida LLC
• Breitburn Sawtelle LLC
• GTG Pipeline LLC
• Mercury Michigan Company, LLC
• Phoenix Production Co
• Preventive Maintenance Services LLC
• Terra Energy Co LLC
• Terra Pipeline Co LLC
• Alamitos Co
• Resolute Northern Rockies LLC
• Resolute Natural Resources Co LLC
• Resolute Wyoming Inc
• Resolute Aneth LLC
• Bwnr LLC
• Wynr LLC
• Shenzhen ZhongRong Morgan Investment Holding Group Co., Ltd.
• RAAM Global Energy Co
• Sita Energy, LLC
• Century Exploration Houston, LLC
• Century Exploration New Orleans, LLC
• Century Exploration Resources, LLC

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