• Clajon Industrial Gas, Inc.
• Clayton Williams Pipeline Corp
• Desta Drilling GP, LLC
• Desta Drilling, L.P.
• West Coast Energy Properties GP, LLC
• Ute Energy Upstream Holdings LLC
• Whiting USA Trust II
• SandRidge Mississippian Trust II
• Pacific Coast Oil Trust
• Pacific Coast Energy Co LP
• Gase Energy, Inc.
• Diamondback Energy Inc.
• Three Rivers Operating Co Inc.
• Black Stallion Oil & Gas Inc.
• Veren Inc.
• Norstra Energy Inc
• Samson Resources Corp
• LinnCo, LLC
• Access US Oil & Gas, Inc.
• MDS Energy Public 2013 Program
• Mds Energy Public 2013-A LP
• Mds Energy Public 2014-A LP
• Galt Petroleum, Inc.
• Rockford Oil Corp
• Brushy Resources, Inc.
• EP Energy LLC
• Energy & Exploration Partners, Inc.
• Petrobras Global Finance B.V.
• Woodgate Energy Corp
• TXO Partners L.P. Representing Limited Partner Interests
• New Source Energy Partners L.P.
• Annona Energy Inc.
• Gulf Coast Ultra Deep Royalty Trust
• Prc Williston, LLC
• PetroShare Corp.
• Atlas Resources Series 33-2013 L.P.
• Atlas Growth Partners, L.P.
• Jones Energy, Inc.
• Abbott Energy, Inc
• Matador Production Co
• MRC Rockies Co
• Longwood Gathering & Disposal Systems, LP
• Longwood Gathering & Disposal Systems GP, Inc.
• MRC Permian Co
• Athlon Energy Inc.
• Athlon Holdings LP
• CNOOC Finance (2013) Ltd.
• Energy 11, L.P.
• EP Energy Corp
• Remington Energy Group Corp

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