Company 
        
		  
Gasfrac Energy Services Inc. 
Crosstex Energy Lp 
Quanta Services, Inc 
GE Energy Financial Services 
Meritage Midstream Services, LLC 
Abraxas Petroleum Corp. 
Activa Resources Ag 
Adelaide Energy Ltd. 
Admiral Bay Resources Inc. 
Advantage Energy Ltd. 
Afren Plc 
Altima Resources Ltd. 
American Natural Energy Corp. 
American Standard Energy Corp. 
Anadarko Petroleum Corp 
Angle Energy, Inc. 
Anterra Energy, Inc. 
Antrim Energy, Inc. 
Apache Corp 
Approach Resources, Inc. 
Arc Energy Trust 
Arcan Resources Ltd. 
Archer Petroleum 
Arsenal Energy Inc. 
Artek Exploration Ltd. 
Athabasca Oil Corp 
ATP Oil & Gas Corp. 
Aurora Oil & Gas Ltd. 
Fremont Petroleum 
Avatar Energy Ltd. 
Awe Limited 
Azabache Energy Inc. 
Bankers Petroleum Ltd. 
Basic Energy Services Inc. 
Baytex Energy Corp. 
Bellamont Exploration Ltd. 
Bellatrix Exploration Ltd. 
Bengal Energy Ltd 
Bill Barrett Corp. 
Birchcliff Energy Ltd. 
Blackpearl Resources, Inc. 
Blacksteel Energy, Inc. 
Blue Dolphin Energy Company 
Blue Energy Ltd. 
Blugrass Energy, Inc. 
BNK Petroleum Inc. 
Bonavista Energy Corp 
Bonterra Energy Corp 
Bpz Resources, Inc. 
Breitburn Energy Partners L.P. 
Brigham Exploration Co. 
Morgan Stanley 
Buccaneer Energy Ltd. 
Bucking Horse Energy, Inc. 
C&c Energia Ltd. 
Cabot Oil & Gas Corp 
Cadogan Petroleum Plc 
Cairn Energy Plc 
Callon Petroleum Co. 
Calvalley Petroleum Inc. 
Canacol Energy Ltd. 
Canadian Natural Resources (CNRL) 
Canadian Oil Sands Limited 
Candax Energy Inc. 
Cano Petroleum, Inc. 
Consol Energy Inc. 
Carnarvon Petroleum Ltd. 
Carrizo Oil & Gas Inc. 
Caspian Energy Inc. 
Caza Oil & Gas, Inc. 
Cbm Asia Development Corp 
Celtic Exploration Ltd. 
Cenovus Energy Inc. 
Cequence Energy Ltd. 
Cgx Energy Inc. 
Chesapeake Energy Corp 
China North East Petroleum Holdings Limited 
China Petroleum & Chemical Corp. 
Chinook Energy, Inc. 
Cimarex Energy Co. 
Clayton Williams Energy Inc. 
CNOOC Limited 
Cobalt International Energy, Inc. 
Comstock Resources Inc. 
Concho Resources, Inc. 
Contact Exploration Inc. 
Contango Oil & Gas Co. 
Continental Resources, Inc. 
Cooper Energy Limited 
Credo Petroleum Corp. 
Crescent Point Energy Corp. 
Crimson Exploration Inc. 
Crown Point Energy Inc. 
Cubic Energy Inc. 
Daylight Energy Ltd. 
Dejour Energy Inc. 
Delta Petroleum Corp. 
Denbury Inc. 
Devon Energy Corp 
Diamond Offshore Drilling, Inc. 
Diaz Resources Ltd. 
Donnybrook Energy Inc. 
Dorchester Minerals Lp 
Dune Energy Inc. 
Eagle Ford Oil & Gas Corp. 
Ecopetrol S.A. 
El Paso Corp. 
Elk Petroleum Limited 
Elkwater Resources Ltd. 
Emerson 
Emerge Oil & Gas, Inc. 
Empire Petroleum Corp. 
Encore Energy Partners Lp 
Endeavour International Corp 
Enegi Oil Plc 
Energen Corp. 
Ovintiv Inc 
Energy Partners Ltd. 
Enerjex Resources, Inc. 
Enerplus Corp 
Ensco Plc 
Enservco Corp 
Energy Transfer Equity, L.P. 
Enterprise Energy 
Enterprise Products Partners LP 
EOG Resources, Inc. 
EQT Corp 
Equal Energy Ltd. 
EV Energy Partners Lp 
Evolution Petroleum Corp. 
Exco Resources Inc. 
Fairborne Energy Ltd 
Falcon Oil & Gas Ltd. 
Fieldpoint Petroleum Corp. 
Forent Energy Ltd. 
Forest Gate Energy, Inc. 
Forest Oil Corp. 
Fx Energy Inc. 
Gale Force Petroleum Inc. 
Gasco Energy Inc. 
Gastar Exploration Inc 
Geomet, Inc. 
Georesources, Inc. 
Gmx Resources Inc. 
Goodrich Petroleum Corp. 
Gran Tierra Energy, Inc. 
Gulfport Energy Corp. 
Hallador Energy Company 
Harvest Natural Resources Inc. 
Hawk Exploration, Ltd. 
Heritage Oil Plc 
Horizon Oil Ltd. 
Hyperdynamics Corporation 
Interra Resources Ltd. 
Ironhorse Oil & Gas Inc. 
Isramco Inc. 
Ithaca Energy Inc. 
Ivanhoe Energy, Inc. 
Jayhawk Energy, Inc. 
Junex Inc. 
Jacobs Engineering Group Inc. 
Kallisto Energy Corp 
Kodiak Oil & Gas Corp. 
Legacy Reserves Lp 
Linn Energy, Inc 
Longreach Oil Ltd. 
Lucas Energy, Inc. 
Magellan Energy, Ltd. 
Magellan Petroleum Corp 
Magnum Energy Inc. 
Magnum Hunter Resources Corp. 
Mariner Energy, Inc. 
Mcmoran Exploration Co. 
MDU Resources Group Inc. 
Melrose Resources Plc 
Mexco Energy Corp 
Mgm Energy Corp 
Midway Energy Ltd. 
Miller Energy Resources, Inc. 
Modena Resources Ltd. 
Nal Energy Corp 
National Fuel Gas Co. 
Newfield Exploration Co. 
Nexen Inc. 
Nexus Energy Ltd. 
Ngas Resources Inc. 
Nido Petroleum Ltd. 
Nighthawk Energy Plc 
Noble Energy, Inc. 
Northern Oil and Gas, Inc. 
Norse Energy Corp. Asa 
North American Energy Resources, Inc. 
NuStar Energy L.P. 
Nuvista Energy Ltd. 
Oasis Petroleum Inc. 
Odyssey Energy Ltd. 
OGX Petroleo 
Open Range Energy Corp. 
Oracle Energy Corp. 
Otto Energy Limited 
Painted Pony Petroleum Ltd 
Palliser Oil and Gas Corp. 
Panhandle Oil and Gas Inc. 
Panterra Resource Corp. 
Paradigm Oil and Gas, Inc. 
Paramount Resources Ltd. 
Parex Resources, Inc. 
Paxton Energy Inc. 
PDC Energy, Inc. 
Penn Virginia Corp 
Petrobakken Energy Ltd. 
Petrobank Energy and Resources Ltd. 
Petroglobe Inc. 
Questar Corp 
Petrohunter Energy Corp 
Petroquest Energy Inc. 
Petrowest Energy Services 
Pine Cliff Energy Ltd. 
Pinecrest Energy Inc. 
Pioneer Natural Resources Co. 
Pioneer Southwest Energy Partners L.P. 
Plains Exploration & Production Company 
Postrock Energy Corp 
PrimeEnergy Resources Corp. 
Progress Energy Resources Corp 
Pyramid Oil Company 
QEP Resources, Inc. 
Questerre Energy Corp. 
Quicksilver Resources Inc. 
Ram Energy Resources, Inc. 
Rancher Energy Corp. 
Range Energy Resources, Inc. 
Range Resources Corp 
Realm Energy Intl Corp 
Recovery Energy, Inc. 
Renegade Petroleum Ltd. 
Reostar Energy Corp. 
Resolute Energy Corp 
Rex Energy Corp 
Rosetta Resources, Inc. 
Royale Energy Inc. 
Samson Oil & Gas Limited 
Sandridge Energy, Inc. 
SM Energy Company 
Southwestern Energy Co. 
Stone Energy Corp. 
Storm Resources Ltd. 
Strategic American Oil Corporation 
Sun River Energy, Inc. 
Sundance Energy Inc 
Swift Energy Co. 
SRC Energy Inc 
Talisman Energy Inc. 
Toreador Resources Corp. 
Transatlantic Petroleum Ltd. 
Triangle Petroleum Corp 
Tullow Oil Plc 
Twin Butte Energy Ltd. 
Ultra Petroleum Corp. 
Spectra Energy Corp. 
Unit Corp. 
Vanguard Natural Resources, Llc 
Voyager Oil & Gas, Inc. 
W&T Offshore Inc. 
Warren Resources Inc. 
Whiting Petroleum Corp. 
Williams Companies, Inc. 
Winstar Resources Ltd. 
Woodside Petroleum Ltd. 
Xtreme Drilling and Coil Services Corp. 
Yoho Resources Inc. 
Zargon Oil & Gas Ltd 
Zenergy International, Inc. 
Zodiac Exploration Corp. 
Sanchez Energy Corp 
BP Plc 
Kohlberg Kravis Roberts & Co. (KKR) 
American Petro-Hunter Inc. 
Chief Gathering Llc 
Circle Star Energy Corp. 
Atlas Resource Partners, L.P. 
X-Change Corp 
Blueknight Energy Partners, L.P. 
XTO Energy Inc. 
Marathon Oil Corp 
Battalion Oil Corp. 
Paloma Partners II, LLC 
WPX Energy, Inc. 
Sharon Resources, Inc. 
Triad Energy and Affiliates 
Memorial Production Partners Lp 
Memorial Resource Development Corp. 
Matador Resources Company 
Explortex Energy, Inc 
Victory Energy Corporation 
Aurora Energy Partners 
Mountainview Energy Ltd. 
Energy Transfer Partners Lp 
Enbridge Energy Partners Lp 
Select Energy Services 
El Paso Pipeline Partners, L.P. 
Cheyenne Plains Pipeline 
Penn Virginia Resource Partners Lp 
Titan Operating, L.L.C 
Natural Resource Partners L.P. 
Osage Exploration and Development, Inc. 
San Leon Energy 
Eagle Energy Trust 
ConocoPhillips 
Total SA 
EP Energy Corp 
American Eagle Energy Corp 
Mueller Exploration, Inc. 
US Energy Corp. 
Texon Petroleum Limited 
Noble Royalties, Inc 
Markwest Energy Partners, L.P. 
Keystone Midstream Services 
Magnolia Petroleum 
Antero Resources 
Black Ridge Oil & Gas, Inc. 
Bear Tracker Energy, Llc 
Hutton Energy 
Americas Petrogas 
Laredo Petroleum Inc. 
Slawson Exploration Inc. 
Cordillera Energy Partners 
Newkumet Exploration Inc. 
Endeavor Energy Resources 
Magellan Midstream Partners Lp 
Occidental Petroleum Corp 
ExxonMobil 
Penn West Petroleum Ltd. 
Chevron Corp 
DCP Midstream LP 
EQM Midstream Partners, LP 
Caerus Oil and Gas Llc 
Altagas Limited 
Centerpoint Energy, Inc. 
Martin Midstream Partners Lp 
Copano Energy Llc 
NGL Energy Partners Lp 
Kosmos Energy 
Mesa Energy Holdings, Inc. 
Sunoco Logistics Partners L.P. 
Veresen Inc. 
Mitsubishi Corporation 
Whitecap Resources Inc. 
Western Gas Partners Lp 
Hess Corp 
Rosneft Oil Company 
Eni S.P.A 
Xtreme Oil & Gas 
Madalena Energy Inc. 
Targa Resources Partners Lp 
Vaalco Energy Inc. 
Clearfield Energy, Inc. 
Eagle Rock Energy Partners Lp 
Peyto Exploration & Development Corp 
Compton Petroleum Corp. 
Aurelian Oil & Gas 
Santa Maria Petroleum Inc. 
Blackbird Energy Inc. 
Pengrowth Energy Corp 
Korea National Oil Corp 
Crestwood Midstream Partners Lp 
The Carlyle Group Lp 
Chesapeake Midstream Partners, L.P. 
Global Infrastructure Partners 
Atlas Energy, L.P 
Dominion Resources, Inc. 
Cloud Peak Energy Inc. 
Chaparral Energy 
Leor Energy 
Three Rivers Operating Company LLC 
Wheatland Oil Inc. 
Sinopec 
Energy Corporation of America 
First Reserve Corp 
Liberty Energy Corp. 
Nisource Inc. 
Hilcorp Energy Company 
Waldron Energy Corp 
Apco Oil & Gas International Inc. 
Williams Partners Lp 
Caiman Energy Ii 
Caiman Eastern Midstream Llc 
Zaza Energy Corp 
Hemisphere Energy Corp 
Rmp Energy Inc. 
BHP Billiton Limited 
Talon Oil & Gas Llc 
Apollo Global Management, Llc 
Riverstone Holdings Llc 
Arc Resources Ltd. 
Bonanza Creek Energy, Inc. 
Reliance Industries Limited 
Beach Energy Limited 
Icon Energy Ltd. 
Exoma Energy Limited 
TAG Oil Ltd. 
Drillsearch Energy, Ltd. 
Senex Energy Ltd. 
Halliburton 
Baker Hughes Company 
Cameron International Corporation 
Schlumberger Limited 
Weatherford International Ltd. 
National Oilwell Varco, Inc. 
CGG 
Geokinetics Inc. 
Superior Energy Services, Inc. 
Mitsui & Co. Ltd. 
Lynden Energy Corp. 
Transerv Energy Limited 
Atlas Pipeline Partners Lp 
Plains All American Pipeline, L.P. 
Aroway Energy Inc. 
Oneok Partners, L.P. 
Anderson Energy Ltd 
Enbridge Inc. 
TC Energy Corp. 
Pembina Pipeline Corp 
Boardwalk Pipeline Partners, Lp 
Buckeye Partners Lp 
Spectra Energy Partners, Lp 
Genesis Energy Lp 
Inergy, L.P. 
Targa Resources Corp. 
Semgroup Corporation 
PAA Natural Gas Storage, L.P. 
Transmontaigne Partners L.P. 
Delphi Energy Corp. 
Enterprise Energy Resources Ltd. 
Sumitomo Corp 
Petro-Canada Resources 
Suncor Energy Inc. 
Suncor Energy-Natural Gas-America Inc 
Trilogy Energy Corp. 
Murphy Oil Corp 
Tourmaline Oil Corp. 
Vermilion Energy Inc. 
New Gulf Resources, Llc 
Guide Exploration Ltd. 
Husky Energy Inc. 
Tamarack Valley Energy Ltd. 
Rockbridge Resources Inc 
Manitok Energy Inc. 
Pennant Energy Inc. 
Sonde Resources Corp. 
UGI Corporation 
Ugi Energy Services Inc. 
Access Midstream Partners, L.P. 
Crocotta Energy Inc. 
Surge Energy Inc 
Crew Energy Inc. 
Vero Energy Inc. 
Saddle Butte Llc 
Regency Energy Partners Lp 
Net Midstream 
Teak Midstream 
Anglo Canadian Oil Corp. 
Westfire Energy Ltd. 
Texstar Midstream Services 
Tamaska Oil and Gas Ltd 
Midstates Petroleum 
Eagle Energy Production Llc 
Southern Union Company 
Petrohawk Energy Corporation 
Rhino Resource Partners Lp 
Shell plc 
Strike Energy Ltd 
Marubeni Corporation 
Donnycreek Energy Inc. 
Lewis Energy 
Geosouthern Energy 
Tesoro Corporation 
Phillips 66 
Tallgrass Energy, LP 
Petronas 
Eagleford Energy Inc. 
Black Hills Corporation 
U.S. Development Group 
Stratex Oil and Gas 
Molopo Energy Limited 
Osaka Gas Co. 
Vitruvian Exploration II LLC 
Jbl Energy Partners 
Allied Energy Inc 
Encore Acquisition Company 
Longview Oil Corp 
Mako Hydrocarbons Ltd. 
Terra Energy Corp. 
Trioil Resources Ltd. 
Perpetual Energy Inc 
Sasol Limited 
Santos Limited 
Enervest Ltd. 
BG Group 
EPL Oil & Gas, Inc. 
Caballo Energy Llc 
Lng Energy Ltd. 
Escondido Resources Llc 
Wood Group 
Nfr Energy 
Indigo Natural Resources LLC 
Petrosearch Energy 
Sun Resources Nl 
Sempra Energy 
Energy and Exploration Partners LLC 
Txco Resources Inc. 
Advantage Pipeline, Llc 
Entek Energy Ltd. 
Strata-X Ltd 
Forestar Group Inc. 
Pvr Partners, L.P. 
YPF 
Alliance Resource Partners Lp 
Fidelity Exploration & Production 
Energy XXI Gulf Coast, Inc 
Seneca Resources 
Global Partners Lp 
Oil India Ltd. 
Petroshale Inc. 
Pacific Energy Development 
Nuloch Resources, Inc. 
Panther Energy Company, Llc 
Armada Oil, Inc. 
Blackwater Midstream Corp. 
Ecolab Inc. 
Nalco 
Champion Technologies 
Mitchell's Oil Field Services, Inc. 
Fmc Technologies, Inc. 
Pure Energy Services Ltd 
East Resources, Inc 
Blue Stone Oil & Gas, Llc 
Enduring Resources, Llc 
Antares Energy Ltd 
Escondido Resources Ii, Llc 
Gail (India) Limited 
Eagle Oil & Gas Co 
Deventa Land Corp 
Marquette Exploration Llc 
Anschutz Exploration Corporation 
Duval Lease Services 
Aspect Abundant Shale Lp 
Chief Holdings Llc 
Torchlight Energy Resources, Inc. 
LGX Oil + Gas Inc. 
QR Energy, Lp 
Northstar Offshore Group 
Petropoint Energy 
Dyami Energy Llc 
Nextera Energy Resources 
Samson Investment Company 
Trz Energy Llc 
American Oil & Gas Inc. 
Vessels Energy, Inc. 
Hunt Petroleum Corp. 
Headington Oil Company 
Phillips Resources Inc 
Bluestone Energy Partners 
Atinum Partners Co. 
Alta Resources Llc 
Epsilon Energy Ltd. 
Lime Rock Partners 
Huron Energy Corporation 
Texas American Resources Co. 
Columbia Natural Resources, Llc 
Triana Energy Holdings Llc 
Ellora Energy 
Pecos Gathering & Marketing, L.L.C. 
Inpex Corp 
Kerr-Mcgee Corp. 
Union Pacific Resources Group Inc. 
Haimo Oil & Gas Llc 
Hillwood Oil & Gas, L.P. 
Collins and Young, L.L.C. 
Chief Resources Llc 
Orr Energy 
American Midstream Partners Lp 
Quantum Resources Management, Llc 
Cardinal Midstream 
Woodbine Acquisition LLC 
Repsol S.A. 
Dynamic Offshore Resources, Llc 
Burlington Resources Inc. 
Direct Energy 
JW Operating LLC 
Alta Mesa Resources, Inc 
Petrochina Co. Ltd. 
Waste Connections Inc. 
R360 Environmental Solutions, Inc. 
Flint Hills Resources 
Avista Capital Partners 
Nova Chemicals Corporation 
Costar Midstream, L.L.C. 
Frontier Gas Services, Llc 
Louis Dreyfus Highbridge Energy Llc 
Chief Oil & Gas Llc 
Alpha Natural Resources Inc. 
Rice Energy 
LRR Energy LP 
Lone Pine Resources Inc. 
Ute Energy Upstream Holdings Llc 
Monterey Exploration Ltd. 
Teton Energy Corp 
Marathon Petroleum Corporation 
Rock Energy Inc. 
Freehold Royalties Ltd. 
Winchester Energy Co., Ltd. 
Nimin Energy Corp 
Element Petroleum, Lp 
Eagle Chief Midstream, Llc 
Rangeland Energy 
Imperial Oil Limited 
Legacy Oil + Gas- Canada. 
Invicta Energy Corp. 
Harbinger Group Inc. 
Jefferies Group, Inc. 
Leucadia National Corp. 
Kabe Exploration Inc. 
Petrofrontier Corp. 
Adventure Exploration Partners Llc 
Calumet Florida, L.L.C. 
Voyager Gas Corporation 
Foster Wheeler Ag 
Synenco Energy Inc. 
Taqa 
Focus Energy Trust 
Online Energy Inc. 
Seadrill Limited 
Dril-Quip, Inc. 
Interoil Corporation 
Cutpick Energy Inc. 
Shoreline Energy Corp. 
Trans Energy Inc. 
Republic Energy Ventures Llc 
Apax Partners 
Jmi Equity 
Paradigm Ltd. 
Tesco Corporation 
Howard Weil Incorporated 
Scotiabank 
Vanguard Energy Corporation 
North Sea Energy Inc. 
Peak Energy 
Declar Oil & Gas, Inc. 
Wolf Point Exploration, Llc 
Caltex Energy Inc 
Raging River Exploration Inc. 
Blackdog Resources Ltd. 
Inergy Midstream, L.P. 
Treaty Energy Corporation 
Marquee Energy Ltd. 
Wellstar Energy Corp. 
Cordillera Texas, L.P. 
Lundin Petroleum 
Celtique Energie 
Source Energy Partners Lp 
Pluspetrol 
Petrobras 
Keyera Corp. 
Japan Petroleum Exploration Co. Ltd. 
Nuevo Midstream Llc 
Anatolia Energy Corp 
New Zealand Energy Corporation 
Westech Energy New Zealand 
Five States Energy Company, Llc 
Nextera Energy Gas Producing, Llc 
Samson Resources Company 
Cuadrilla Resources Ltd. 
Crownrock, Lp 
Terrace Energy Corp. 
Strategic Oil & Gas Ltd. 
Direct Petroleum Bulgaria Eood 
Anschutz Morocco Corporation 
Direct Petroleum Morocco Inc. 
Big Sky Petroleum Corp. 
Stetson Oil & Gas Ltd. 
Trican Well Service Ltd. 
Petronova Inc. 
Earthstone Energy Inc. 
Howard Midstream Energy Partners Llc 
Yangarra Resources Ltd. 
Lighthouse Petroleum, Inc. 
Cardiff Energy Corp. 
Lime Rock Resources 
Kulczyk Oil Ventures Inc. 
Saratoga Resources Inc. 
North American Oil & Gas Corp. 
Central Resources, Inc 
Freeport-Mcmoran Inc. 
Wapiti Energy Llc 
PKN Orlen SA 
Solimar Energy Limited 
Calfrac Well Services Ltd. 
Carmeuse Holding S.A. 
Fracrock International, Inc 
Rose Rock Midstream, L.P. 
Harvest Oil 
Imperial Oil Resources Ltd. 
Westbrick Energy Ltd. 
Tangle Creek Energy Ltd. 
Long Run Exploration Ltd. 
New Star Energy Ltd. 
Petrus Resources Ltd. 
Canbriam Energy 
Red River Energy 
Elkhorn Resources 
Sure Energy Inc 
Teine Energy 
Geopetrol Resources Ltd. 
Canera Energy Corp. 
Coastal Energy Co. 
Core Resource Management, Inc. 
Nostra Terra Oil & Gas Company Plc 
Cadre Services Inc. 
Cavu Resources Inc. 
Iona Energy Inc. 
Volantis Exploration Ltd. 
Rise Energy Partners 
Tamboran Resources Pty Ltd. 
Freepoint Resources Llc 
Freepoint Commodities Llc 
Keystone Royalty Corp. 
Minsk Energy Resources 
Geoknowledge 
Spring Energy 
Marbob Energy Corporation 
Ruger Energy Inc. 
Bridas Corp. 
Technip 
Wexford Capital Lp 
Tlp Energy Llc 
Pertamina 
Sse Plc 
Calumet Specialty Products Partners, L.P. 
Parallel Resource Partners Llc 
Microseismic Inc. 
Holly Energy Partners L.P 
Mondial Ventures Inc 
Tengasco Inc. 
Saltwater Disposal of North Dakota Llc 
Borealis Infrastructure 
Corenergy Infrastructure Trust 
Redhawk Resources Inc. 
Kogas Canada Ltd 
Robbins & Myers Inc. 
Peoples Natural Gas 
Diamondback Energy, Inc. 
Acer Energy Limited 
Real Energy Corporation Limited 
Bluestone Natural Resources II LLC 
Newpark Resources Inc. 
Alliance Drilling Fluids Llc 
Enerven Compression Llc 
Encore Energy Inc. 
White Top Oilfield Construction Llc 
Black Water Services Llc 
Egpi Firecreek Inc. 
Talen's Marine & Fuel Llc 
Iroc Energy Services Corp. 
Progressive Resources Inc. 
Air Liquide Industrial U.S. Lp 
Ram River Coal Corp. 
Armstrong Energy Corp 
Avalon Exploration, Inc. 
Bayswater Exploration and Production 
BC Operating Inc 
Black Diamond Oil, Inc. 
Citation Oil & Gas Corp. 
Citrus Energy Corporation 
Cobra Oil & Gas Corp. 
Four Sevens Operating Co, Ltd 
Great Western Petroleum LLC 
Henry Resources Llc 
Jm Cox Resources Lp 
Lario Oil & Gas 
Mack Energy Company 
Mai Oil Operations, Inc. 
Nadel and Gussman LLC 
Navidad Resources, Llc 
Pantera Energy Company 
Parsley Energy Inc. 
Rki Exploration & Production, Llc 
Rover Operating Company, Llc 
Silver Creek Oil & Gas, LLC 
Smith Production Inc. 
Tanos Exploration II, LLC 
Tecpetrol Operating 
Treadstone Energy Partners LLC 
Truevine Operating, Llc 
Vecta Oil & Gas Ltd 
Wm Ks Energy Resourc 
Petroamerica Oil Corp 
Richfield Oil & Gas Company 
Encap Flatrock Midstream 
Maxxam Analytics 
Henderson & Associates 
Ironwood Oil & Gas Llc 
Tenaska Resources Llc 
Sundance Energy Corp. 
Calik Holding A.S. 
Frontier Energy Group Llc 
Canary Llc 
Landocean Energy Services Co. Ltd 
Kinder Morgan, Inc. 
Light Tower Rentals Inc. 
Wellsite Leasing 
On Site Water 
Rio Bravo Oil, Inc. 
JP Energy Partners LP 
Tug Hill Operating 
Tnk-Bp 
Nexen Holdings Usa Inc. 
Petro One Energy Corp. 
Nal Resources 
Spartan Energy Corp. 
MEG Energy 
Artisan Energy Corporation 
Journey Energy Inc 
Exoro Energy 
Velvet Energy Ltd 
Black Shire Energy Inc. 
Gear Energy Ltd 
Osum Oil Sands Corp 
Seven Generations Energy Ltd 
Corinthian Oil Corp. 
Black Swan Energy Ltd. 
Northern Blizzard Resources Inc 
Beaumont Energy Inc. 
Southern Pacific Resources 
Husky Ventures Inc 
Stw Resources Holding Corp. 
Tiburon Research Holdings Llc 
Santrol 
Bcm Energy Partners, Inc. 
New Times Energy Corp. Ltd. 
Argent Energy Trust 
Black Wolf Enterprises Llc 
I-Tec Well Solutions Llc 
Spartan Oil Corp. 
Sinochem Group 
Quantum Energy Partners 
Castleton Commodities International Llc 
Basin Transload Llc 
Falcon E&p Opportunities Fund Lp 
Xcxp Operating Lp 
Energy & Minerals Group 
Questfire Energy Corp. 
Summit Midstream Partners, Lp 
US Silica 
Cardinal Energy Ltd. 
Endurance Energy 
Forge Petroleum Corporation 
Highrock Energy 
Polar Star Canadian Oil and Gas Inc 
Trident Corp 
Pioneer Energy Services Corp. 
Shona Energy Company Inc. 
Santa Fe Petroleum, Inc. 
Tenaris Sa 
Bayport International Holdings Inc. 
Cascade Kelly Holdings LLC 
Energy Revenue America, Inc. 
Southcross Energy Partners, L.P. 
West Texas Resources, Inc. 
Calyx Energy Llc 
Cheyenne Petroleum Co 
Plymouth Exploration LLC 
Sinclair Oil & Gas Company 
Three Rivers Operating Co II LLC 
Unimin Corporation 
First Titan Corp. 
Norstra Energy Inc. 
Amelia Resources Llc 
Britco Lp 
PGNiG 
Kelt Exploration Ltd. 
Cub Energy Inc. 
Birch Lake Energy Inc. 
Twin Eagle 
Broad Oak Energy, Inc. 
Sheridan Production Partners 
Summit West Oil Llc 
Rangeford Resources, Inc. 
Independence Energy Corp. 
Cinco Resources, Inc. 
Bopco Lp 
Brammer Engineering, Inc 
Century Expl Houston 
Kaiser-Francis Oil Company 
Longfellow Energy Lp 
Marlin Enrgy Res Llc 
Mtn Energy Inc 
Patriot Resourcs Inc 
Mountaineer Keystone LLC 
Petroedge Energy Llc 
Reliance Energy Inc 
Repsol E&p Usa Inc 
Resaca Resources Llc 
Rockefeller Hughes Corporation 
Samson Exploration LLC 
Sequel Energy Llc 
Steward Energy Llc 
Stonegate Production Co. 
Stroud Petroleum Inc 
Tema Oil & Gas Company 
J Cleo Thompson 
Venado Oil & Gas Llc 
Veritas Energy Llc 
Sintana Energy Inc 
Centrica Plc 
Deethree Exploration Ltd. 
TC PipeLines, LP 
Key Energy Services Inc. 
Duma Energy Corp. 
Inter Pipeline Ltd. 
Par Petroleum Corporation 
Tokyo Gas Co., Ltd. 
Bri-Chem Corp. 
Enbridge Income Fund Holdings Inc. 
Northern Frac Proppants Llc 
Lufkin Industries Inc. 
General Electric Company 
Post Oak Energy Capital Lp 
Oao Tmk 
Its Tubular Services (Holdings) Ltd. 
Pbf Energy Inc. 
Gazprom Neft 
Villanova Oil Corp. 
HF Sinclair Corporation 
Goose Landing Sand Co. Llc 
Brownstone Energy Inc. 
Tundra Oil & Gas Ltd. 
Jagged Peak Energy Inc 
Dxp Enterprises, Inc. 
National Process Equipment Inc. 
The Tierra Companies 
Matmown, Inc. 
Qatar Petroleum 
Western Energy Services Corp. 
Honeywell International Inc. 
Prd Energy Inc. 
Progress Energy Canada Ltd. 
Petro River Oil Corp. 
Petro River Oil Llc 
Hinto Energy Inc. 
Apex Energy II Llc 
CJ Energy Services Inc. 
Carmen Energy Inc. 
Primary Petroleum Corporation 
Viking Exploration and Production Tunisia Ltd. 
Dimension Energy Services 
Gibson Energy Inc. 
Monarch Natural Gas Llc 
Sabine Oil & Gas Corp 
White Deer Energy 
Mid-Con Energy Partners Lp 
Soane Energy Llc 
TORC Oil & Gas Ltd. 
Hi-Crush Inc 
D&i Silica, Llc 
Stonepeak Infrastructure Partners 
Citadel Exploration Inc 
Aera Energy Llc 
Blue Earth Resources Inc. 
Rango Energy Inc. 
Target Energy Limited 
Cardinal Gas Storage Partners 
Seacor Holdings Inc. 
Challenger Energy Ltd 
Black Elk Energy 
Next Generation Energy Corp. 
New Western Energy Corporation 
Nuverra Environmental Solutions 
Ideal Oilfield Disposal Llc 
Tailwater Capital 
Amarok Energy Inc. 
Northwestern Energy 
Northern Petroleum Plc 
Mastec, Inc. 
Big Country Energy Services Inc. 
Nv Energy Inc. 
Midamerican Energy Holdings Co. 
Ongc Ltd. 
Blaze Energy Corp. 
Bison Midstream Llc 
PEMEX 
Express Energy Services 
Total Energy Services Inc. 
Savanna Energy Services Corp. 
Northcote Energy 
Petrominerales 
Greenhunter Resources, Inc. 
Dno International Asa 
Petrotech Oil and Gas Inc. 
Pangean Energy Llc 
Oil States International Inc. 
Midcoast Energy Partners, L.P. 
Origin Energy Ltd. 
Rockwater Energy Solutions Inc. 
The Oxford Oil Company Llc 
Grafton Energy Co I Ltd. 
Petron Energy Ii Inc. 
Krisenergy Ltd. 
Quattro Exploration and Production Ltd. 
Lightstream Resources Ltd. 
Crescent Terminals Llc 
Cierra Marine Lp 
Itera Holdings Limited 
Pride Ventures 
Pacific Northwest Lng 
Gmt Exploration Llc 
Texcom, Inc. 
Almac Environmental Services 
Rio Oil and Gas Llc 
Videocon Mauritius Energy Limited 
Cordillera Energy Partners Iii 
Nabors Industries Ltd. 
Agr Tools Inc 
Consolidated Oil and Gas 
American Exploration Corp 
Avere Energy Inc. 
Acadian Energy Llc 
Cantex Energy Corporation 
Atlas America Inc. 
Eureka Energy Ltd. 
Dte Gas and Oil Company 
Arete Industries, Inc. 
Dnr Oil & Gas Co 
Arena Resources, Inc. 
Argonaut Private Equity 
Sunstone Oil and Gas Llc 
Amen Properties 
Sff Production, Llc 
Santa Fe Energy Trust 
Altacanada 
Meridian Resource Corporation 
Baseline Oil & Gas Corp. 
Jones Energy Inc. 
Summit Esp 
Phillips 66 Partners LP 
Black Stone Minerals, L.P. 
Blackwood Ventures Llc 
United Heritage Corporation 
Petro Grande Llc 
Canadian Energy Services & Technology Corp. 
Venture Mud Lp 
Provident Energy Trust 
Brighton Oil and Gas 
Brishlin Resources Inc. 
Capco Energy 
Capital City Energy Group 
Edge Petroleum Corporation 
Calumet Oil Company 
Charlotte Resources Ltd 
Hallwood Energy Corporation 
Cardinal Energy Group Inc. 
International Paper 
City of Dallas 
China Kinwa High Technology Company Ltd 
Cieco Energy 
Cinco County Barnett Shale Llc 
Coldren Resources Lp 
Swepi Lp 
Ceiba Energy Services Inc. 
Amvest Corporation 
Constellation Energy Group Inc. 
Energyquest Resources Lp 
Diverse Energy Investments Llc 
Crow Creek Energy Ii Llc 
Crusader Energy Group 
Westside Energy Group 
Cubo Energy Plc 
Dana Petroleum 
Dana Petroleum Plc 
Bow Valley Energy Ltd 
Dekania Corporation 
Bluecreek Energy Inc. 
Doral Energy Corp. 
Hanson Energy 
John R Stearns 
Bayou Bend Petroleum 
Athlon Energy Inc. 
Suroco Energy Inc. 
Spn Resources 
Sandstone Energy Llc 
Escambia Asset Company 
Maclondon Energy Lp 
Maersk Oil 
Neg Oil & Gas 
Ecco Energy Corp. 
Louisiana Shelf Partners Lp 
Scotia Waterous 
Flying J Inc. 
Peoples Energy Production Company 
Mainland Resources, Inc. 
Emkey Resources Llc 
Sojitz Energy Venture Inc 
Empyrean Energy Plc 
Krescent Energy Partners Ii Lp 
Helix Energy Solutions 
Energy Resource Technology 
Emvelco Corp 
South Texas Oil Company 
Vortex Ocean One Llc 
Southeastern Oil & Gas 
St. Mary Land & Exploration Co. 
Rockford Energy Partners Ii Llc 
Mar Ked Mineral Exploration, Inc. 
North American Energy Exploration, Inc. 
Sterling Energy 
Whittier Energy 
Storm Cat Energy Corp 
Galveston Bay Energy 
Raven Wing Resources 
Mohican Operating Llc 
Meridian Petroleum Plc 
Petroleum Exploration and Management 
The Houston Exploration Co. 
Common Resources Llc 
Cohort Energy Company 
The Friendsville Group 
Fortuna Energy 
Hillwood Energy Alabama Lp 
Tammany Oil & Gas 
Cienco Energy Ventures 
Pogo Producing Co. 
Tetra Technologies Inc. 
Blackgate Resources, Llc 
Petroedge Energy Iii Llc 
Mogul Energy International, Inc. 
Excelaron Llc 
Canexus Corp. 
Shelby Resources Llc 
Texada Ventures 
Royalty Exploration 
Beard Subsidiary 
Multisys Language Solutions, Inc. 
Holms Energy, Llc 
Mwm Energy Llc 
Anglo-Suisse Offshore Partners Llc 
Navajo Nation Oil & Gas Co. 
Mountaineer State Energy, Inc. 
The Exploration Company 
Output Exploration 
Next Millennium Commercial Corp. 
Eternal Energy Corp. 
Oppenheimer & Co Inc. 
Tridimension Energy 
Trinity Co2 Investments 
Underground Energy 
Paris Oil & Gas Corporation 
Eleon Operators Llc 
Working Interest Holdings Llc 
Black Sable Energy Llc 
Woodstone Resources Llc 
Opon International Llc 
Orbit Petroleum 
Tipton Oil and Gas 
Barrick Energy Inc. 
Paramax Resources Ltd. 
Pavilion Energy Resources, Inc. 
Enseco Energy Services Corporation 
Chimney Sweep Oil and Gas Lllp 
Montecito Offshore, Llc 
Enterra Energy Trust 
Pearl Exploration and Production Ltd. 
Ramshorn Investments 
Pec Minerals L.P. 
Petroflow Energy 
Euramerica Energy Inc. 
Fairmount Minerals 
FTS International Inc. 
Epic Energy 
Patron Energy, Llc 
Big Horn Gas Gathering 
Kcs Energy Inc. 
Castle Gas Company, Inc. 
Unioil 
Pgi Energy, Inc. 
Osyka Resources, Llc 
Jed Oil 
Cabeltel 
Petroleum Development Corporation 
Quest Resources 
Blackriver Petroleum Llc 
Platinum Energy Resources, Inc. 
Ameroil Corporation 
Tandem Energy Holdings, Inc. 
Maverick Engineering 
Sharon Energy 
Point Capital Barnett Shale Investors, G.P. 
Lothian Oil, Inc. 
Latigo Petroleum Inc. 
Exxel Energy Corporation 
Prb Energy, Inc. 
President Petroleum 
Ap Petroleum Company Llc 
Primewest Energy 
Providence Resources, Inc. 
Elm Ridge Exploration Co. 
Medco Energi 
Pure Gas Partners 
Aspen Exploration 
Morgan Creek Energy 
Formcap Corporation 
Fox Petroleum Inc. 
Derby Resources 
Wind Hydrogen Ltd 
Eig Petroleum 
Gastem Inc. 
Utica Energy Llc 
Tritex Energy Llc 
Bays Exploration Inc. 
Southern Bay Energy 
Southern Oil and Gas Lp 
Chandler Energy Llc 
Matrixx Resource Holdings Inc. 
Oneok Inc. 
Georgia Exploration, Inc. 
Wharton Resources Corp. 
GSO Capital Partners Lp 
Vhgi Holdings Inc. 
Boots and Coots 
Healthbridge, Inc. 
Providence Exploration Llc 
Remington Oil and Gas 
Hercules Offshore, Inc. 
Quest Energy Partners, L.P. 
Texcal 
Macquarie Bank Ltd. 
Warrior Energy Nv 
Hicks Acquisition Co. I 
Hall Phoenix Energy Llc 
Hillcorp Energy Llp 
Malloy Energy Co. Lc 
South Uintah Gas Properties 
Walter Energy 
Rabb Resources Limited 
Stallion Energy Llc 
Radiant Oil & Gas, Inc. 
Wle, Inc. 
Ignis Petroleum Group 
Lamanco Drilling Co. 
Ascent Energy Inc. 
Pilgrim Petroleum Corporation 
Implantable Vision Inc. 
Wentworth Energy 
Roboco Energy 
Western Metals 
Loto Energy Ii 
Chicago Energy Associates 
Blacksand Energy Llc 
Red Willow Mid-Continent, Llc 
International Frontier Resources Corp 
Wps Resources 
Peoples Energy Group 
Ipr North America Holdings Corp. 
Flotek Industries Inc. 
Eclipse Ior Services Llc 
Gfb Acquisition I Lp 
Team Energy, Llc 
Pan American Oil Company 
Galaxy Energy Inc. 
Rio Vista Energy Partners, L.P. 
Northport Production Company 
L & M Energy Ltd. 
Roadrunner Oil & Gas, Inc. 
Robert L. Bayless, Producer Llc 
Pyr Energy Corp. 
Gold Point Energy 
Battleground Oil Specialty Terminal Company 
Meidu Holding Co. Ltd. 
Vetra Energia S.L. 
Capital International Private Equity Fund Vi L.P. 
Acon Investments Llc 
Trinidad Drilling Ltd. 
Knight Energy Group 
Thunder River Energy Inc. 
Taylor Energy Company 
Samsung Corporation 
Lander Energy Corporation 
Heathercrest Energy Ltd. 
Nielson and Associates 
Gryphon Production Company 
Erg Resources 
Black Oak Resources Llc 
Hce Operating, Llc 
Leni Gas & Oil 
Byron Energy Pty Ltd 
Ajax Exploration 
Simba Energy 
Serica Energy Plc 
Tower Resources Plc 
Planet Gas Limited 
Arcadia Expro Namibia 
Aminex Plc 
Chrysaor 
Petrel Resources 
Bluestack Energy Ltd 
Egdon Resources Plc 
Trapoil 
Extract Petroleum Limited 
Westbridge Energy 
Ropat Petroleum 
Far Limited 
Petromanas 
Pura Vida Energy Nl 
Spike Exploration 
Enquest 
Nkembe Psc 
Fastnet Oil & Gas Plc 
Tendrara Lakbir Petroleum 
Edgon Resources Plc 
Blackland Park Exploration Ltd 
3d Oil Limited 
Black Spruce Exploration 
Core Energy 
RWE DEA 
Carnarvon Hibiscus 
Bridge Energy 
JX Nippon Exploration and Production 
Petrogal, S.A. 
Porto Energy 
Atlantic Petroleum 
Sfax Offshore Exploration 
Tap Oil 
Union Jack Oil Plc 
New Source Energy Partners L.P. 
Scintilla Llc 
Venturion Oil Limited 
Blackspur Oil Corp 
Azimuth Limited 
Vanoil Energy 
Avana Petroleum Limited 
Terrex Energy 
Perenco 
Troy Energy 
Caithness Petroleum Limited 
Guatemala Production 
North Energy 
New World Oil and Gas Plc 
CNPC 
Petrosen 
Valiant Petroleum Plc 
Danish Energy Authority 
Montrose Industries Limited 
Barcas Field Services Llc 
QEP Midstream Partners Lp 
Cam Trucking and Well Service 
Unocal 
Tuscany Energy Ltd. 
Daewoo International Corp. 
Koynare Development Ltd. 
Strata Oil & Gas Inc. 
Range Resources Limited 
Spyglass Resources Corp. 
Ember Resources Inc. 
Sunshine Oilsands Ltd. 
National Gas Company of Trinidad and Tobago Ltd. 
Peregrine Petroleum Llc 
Finder Exploration Corp 
Actuant Corporation 
Viking Seatech 
Hydrocarb Corporation 
OMV Group 
Helmerich & Payne Inc. 
Blue Racer Midstream Llc 
Faroe Petroleum 
Greene's Energy Group 
Testco Well Services 
Horizon Energy Ltd. 
Cantera Energy LLC 
Acumen Energy Partners Inc. 
Glacier Energy Services 
Ross Offshore 
Boskalis 
Dockwise 
Kazmunaigas Exploration Production 
Deep Sea Supply Plc 
Btg Pactual Oil & Gs Participaes S.A. 
Crestwood Holdings Partners Llc 
Pacific Rubiales Energy Corp. 
General Exploration Partners Inc. 
Hornbeck Offshore 
USA Compression Partners Lp 
S&r Compression Llc 
Worley 
Rosenberg As 
Pt Pertamina 
The Vitol Group 
Sterling Resources Ltd. 
Clough Limited 
E2o Pty Ltd 
E.On 
Mvm Hungarian Electricity Limited 
Noble Corporation plc 
Gardner Denver Inc 
CEP International Petroleum Ltd. 
Pa Resources 
Synergy Offshore Llc 
Panoro Energy Asa 
Hrt Participoes Em Petroleo Sa 
Kuwait Foreign Petroleum Exploration Company 
Novatek 
Armour Energy Ltd. 
Socar 
Mediterranean Oil and Gas Company 
Als Oil and Gas 
Reservoir Group 
Aker Solutions 
International Design Engineering and Services Ltd 
Premier Oil 
Tethys Petroleum Ltd. 
Far Vista Petroleum Corp 
Cjsc Chedty Neft 
Hungarian Oil and Gas Public Limited Company 
Wilton Petroleum Ltd. 
The Laclede Group, Inc. 
Winco Development Llc 
Vale Sa 
Pt Benakat Barat 
Cndoc 
Hoover Energy Partners Lp 
Enserco Midstream Llc 
Yanchang Petroleum International Ltd. 
Duvernay Oil Corp 
Impact Oil and Gas Limited 
Fortune Oil Plc 
China Gas Holdings Limited 
Talos Energy Inc 
Whistler Oil and Gas Pty. Ltd. 
Shelf Drilling Holdings Ltd. 
Transocean Ltd. 
Sistema 
Mission Well Services, Llc 
Pancontinental Oil and Gas 
Craig Group 
Franco-Nevada Corporation 
Songa Offshore 
LLOG Exploration 
Blackstone 
Basf Se 
Oyster Oil and Gas Limited 
Genel Energy 
Shoreline Natural Resources Limited 
Nortgas 
Central Petroleum Ltd. 
Acme Trucking Inc. 
Weyburn Energy Ltd. 
Sonangol E.P. 
Alexander Energy Ltd. 
Shawcor Ltd. 
Fineglade Ltd. 
Legend Oil and Gas, Ltd. 
Africa Oil Corp. 
Petrogas Energy Corp. 
Tellus Resources Ltd. 
Wintershall 
Alliance Oil Company 
Sn-Gazdobycha Llc 
Bayfield Energy Holdings Plc 
Trinity Exploration and Production Limited 
Oil and Natural Gas Corporation of India 
Indian Oil Corporation 
Gasnor 
Mfc Industrial 
Mpx North Sea Limited 
Sorgenia E&p 
Omni Energy Services Corp. 
Keppel Corporation Limited 
Pharos Energy 
Lizeroux Oil & Gas 
Gdf Suez S.A. 
Nadra Ukrany 
Agriterra Limited 
Chieftain Sand and Proppant, Llc 
Shell Pipeline Company Lp 
American Energy Partners 
ANKOR Energy LLC 
Big Star Oil & Gas LLC 
Edf Trading Rescsllc 
EE3, LLC 
Endurance Resources Llc 
Hannathon Petroleum Llc 
Helis Oil & Gas Company Llc 
Hibernia Resources Llc 
Highmount Exploration & Production 
Jetta Operating Co Inc 
Juno Energy II LLC 
Nautilus Poplar Llc 
Pyote Water Systems 
Ring Energy Inc. 
Virtex Operating Co Inc 
Santonia Energy Inc. 
New West Energy Services Inc. 
40 Creek Oilfield Services Ltd. 
Tippin D Oilfield Services Ltd. 
Stone Mountain Resources 
Pan Orient Energy 
PTTEP 
Mpx Resources 
Dalea Partners 
Petromagdalena Energy Corp 
Crump Energy Partners LLC 
Crown Oil Partners IV LP 
Compass Operating Llc 
Anp 
Thomas Russell Co. 
Highway Pipeline Inc. 
Spirit Global Energy Solutions 
Dover Corporation 
Norris Production Solutions 
Snpc 
Japan Australia Lng 
Bison Petroleum Corp. 
As Norske Shell 
Nd Western Limited 
Waseca Energy Inc. 
Petrovietnam 
Enel 
A&t Petroleum Company Ltd. 
Roc Oil 
Agora Oil & Gas 
Global Water Resources, Inc. 
Epcor Water (Usa) Inc. 
Elcrest Exploration and Production Nigeria Ltd 
Texas Gulf Energy Inc. 
Zhaikmunai Lp 
Petroceltic International Plc 
Shamaran Petroleum 
Fluxys 
Snam S.p.A. 
3MV Energy Corp. 
Nigerian National Petroleum Corp 
Bristol Bay Native Corporation 
Peak Oilfield Service Company Llc 
Platte River Equity 
Wildcat Minerals Llc 
Edgen Group Inc. 
Acceleration Resources Llc 
Maverick Oilfield Services Ltd. 
Toro Projects Inc. 
Templar Energy LLC 
Nortex Corporation 
Kent Production Llc 
Plains Gp Holdings Lp 
Sonatrach 
Deep Well Oil and Gas Inc. 
Maurel Et Prom 
Alberta Star Development Corporation 
Canadian Pan Ocean Limited 
Texas Oil and Minerals, Inc. 
Tejones Operating Corporation 
Arrow Midstream Holdings Llc 
Kib Energy Pte Ltd 
Carr Resources Inc. 
Fieldwood Energy Llc 
Heyco Energy Group, Inc. 
Seadrill Partners LLC 
Maple Energy 
Petroforte International Ltd. 
Chariot Oil and Gas 
Kentz Corporation Ltd 
Troika Resources Private Equity Fund 
49 North Resources 
Omineca Mining and Minerals Limited 
Badger Daylighting Ltd. 
Fieldtek Holdings Ltd. 
Forum Energy Technologies, Inc. 
Polar Petroleum Corporation 
Ferrellgas Lp 
Arpetrol Ltd. 
First Mountain Exploration Ltd. 
Lone Oak Acquisition Corporation 
Produced Water Absorbents 
Prosep Inc. 
Petrosoma Ltd. 
Outrigger Energy Llc 
New Standard Energy 
Sprague Resources Lp 
Amerisur Resources Plc 
Cr Innovations Ag 
Sinohan Oil and Gas Investment B.V. 
Forbes Energy Services Ltd. 
Lb Foster Co. 
Ball Winch Pipeline Services Llc 
Elkhorn Holdings Inc. 
CSI Compressco LP 
Gulf Coast Western 
Lighthouse Oil and Gas 
Liberty Resources II LLC 
Petrox Resources Corporation 
Octanex N. L. 
Peak Oil and Gas 
Trafigura Ag 
Oryx Petroleum Corp 
Ferus Natural Gas Fuels 
Silverwillow Energy Corporation 
Cross Country Pipeline Supply Co. Inc. 
Wrangler West Energy Inc. 
Lakewood Midstream 
Energy Spectrum Capital 
Bs&w Solutions Llc 
West Ok Disposal Llc 
West Ok Trucking Inc. 
Global Oil & Gas Services Ltd. 
Atmos Energy 
Marmac Field Services Inc. 
Arclight Capital Partners Llc 
Enable Midstream Partners Lp 
Sea Dragon Energy Inc. 
Goldstrike Resources Ltd. 
Innex Energy Inc. 
Raimount Energy Inc. 
Dixie Energy Trust 
Qep Field Services Company 
Gavilon Llc 
Valero Energy Partners Lp 
Crestwood Equity Partners LP 
Caracal Energy 
Valerus Field Solutions 
Petroleumbrunei 
Source Energy Services 
Advent International 
Rio Bravo Commercial Enterprises Inc. 
Eco-Stim Energy Solutions, Inc. 
Rimrock Midstream Llc 
Eagle Energy Exploration Llc 
Blackhawk Midstream LLC 
Bravo Natural Resources Llc 
Power Associates International, Inc. 
Darby Private Equity 
Cerberus Capital Management 
Esrey Energy Ltd. 
Saponis Investments Sp. Z O.O. 
Primary Natural Resources Iii Llc 
Horsehead Holding Corp. 
Phillips Specialty Products Inc. 
Berkshire Hathaway Inc. 
Ergon-Texas Pipeline, Inc. 
Enterprise Group, Inc. 
Hart Oilfield Rentals Ltd. 
Preston Exploration 
Cypress Energy Partners, L.P. 
Shenhua Energy Company 
Baron Energy Inc. 
RSP Permian Inc. 
Bakken Energy Corp. 
CWC Energy Services Corp 
Amec Plc 
Arabella Exploration Inc. 
EnLink Midstream, LLC 
Super Nova Minerals 
Innex California, Inc. 
Tokai Carbon Co. Ltd. 
Patterson-Uti Energy Inc. 
Sanjel Corporation 
Frac Resources, Llc 
American Wellhead, Llc 
Reservoir Imaging Inc. 
Aqua Terra Water Management 
Packers Plus Energy Services Inc. 
Eagle Downhole Solutions Llc 
Cmc Machine Works Llc 
Nations Oil and Gas Llc 
Terravest Capital Inc. 
Gestion Jerico Inc. 
LOGOS Resources II 
Fourpoint Energy Llc 
EIG Global Energy Partners, Llc 
Paloma Partners Llc 
High Arctic Energy Services 
Sable Environmental Llc 
Chiltepin Resources Llc 
Patara Oil & Gas Llc 
Bakken Resources, Inc. 
Lilis Energy Inc. 
Yuma Energy, Inc. 
Oando Energy Resources  Inc. 
Exhile Resources Inc 
Wit Water Transfer Llc 
First Oil Expro Limited 
Tall Oak Midstream Llc 
Eagleton Engineering, Llc 
Perisson Petroleum Corporation 
Hunting Dog Capital, Llc 
M3 Appalachia Gathering Llc 
Ineos Group 
New Guinea Energy Ltd. 
Brightoil Petroleum Holdings, Ltd. 
Breitling Energy Corporation 
Gaston Kearby 
Pacific Oil Company 
Stellar Energy and Investment Corporation 
Bennu Oil and Gas Llc 
Teekay Offshore Partners Lp 
Alp Maritime Services Bv 
Onshore Petroleum Company As 
Erin Energy Corp. 
Oil Search Limited 
Brigham Resources, LLC 
United Petroleum Company 
Mid-Con Energy Iii Llc 
Lonestar Resources Ltd. 
Lucid Energy Group Llc 
Rushmore Reviews 
Independent Oil and Gas Plc 
Swift Exploration 
Greywacke Exploration Ltd. 
Nordic Oil and Gas Ltd. 
Clearview Resources Ltd. 
Onyx Midstream Lp 
Rooster Energy Ltd. 
Cochon Properties Llc 
Morrison Well Services Llc 
Red Rock Gathering Company Llc 
Rock Oil Holdings Llc 
Transglobe Energy Corporation 
Glori Energy Inc. 
Infinity Cross Border Acquisition Corp. 
North American Petroleum Plc 
Penntex Midstream Partners LLC 
Lariat Partners Lp 
Newpark Environmental Services Llc 
Offshore Cleaning Systems, Llc 
Cardno 
Ppi Group 
Rose Petroleum 
Rockies Standard Oil Company Llc 
Black Bison Water Services Llc 
Five Point Capital Partners 
Ls Power Group 
Energyquest Ii Llc 
Aresco Lp 
Payrock Energy Holdings LLC 
Aexco Petroleum Inc. 
Aggietech Oil Ltd 
C&E Production, LLC 
Yates Petroleum Company 
Eclipse Resources Corp. 
Primexx Energy Partners 
Enven Energy 
Extraction Oil and Gas 
Hunt Oil Company 
GulfTex Energy III 
Forge Energy LLC 
Vess Oil Corporation 
Silver Hill Energy Partners LLC 
Sabalo Energy, LLC 
Ursa Piceance Holdings LLC 
Vantage Energy LLC 
Blackbrush Oil & Gas Llc 
Firewheel Energy Llc 
Berry Corporation 
Emerald Oil Inc 
BTA Oil Producer LLC 
Castex Energy Inc 
HG Energy II LLC 
Petro-Hunt LLC 
Passport Energy Ltd. 
NCS Multistage 
Escalera Resources Co. 
Tapstone Energy Llc 
Adf Holdings Inc 
Ses Holdings Ltd 
Specialty Waste Operating Partners Lp 
Susquehanna Services 
Diversified Resources Inc 
Archer Well Services 
US Well Services 
Rockpile Energy Services 
Alta Energy Luxembourg S.A.R.L 
TPG Capital 
Dominion Midstream Partners Lp 
Black Raven Energy Inc. 
Sunstone Projects Ltd 
Crude Energy Llc 
Warwick Energy Group 
Stingray Energy Services, LLC 
Liberty Oilfield Services 
White Rose Energy Ventures Llp 
Perfomix Inc. 
Hi-Crush Proppants Llc 
Geopark Limited 
Oryx Midstream Services Llc 
Glencore Xstrata Plc 
Stream Oil & Gas Ltd 
Meo Australia Ltd. 
Kea Petroleum Plc 
Stittco Energy Ltd 
Prairiesky Royalty Ltd. 
Rawson Resources Ltd. 
Phoenix Energy Holdings Ltd 
Crown Oil Partners V Lp 
Karoon Gas Australia Ltd 
XR Energy Inc. 
Xr of Texas Llc 
P2 Energy Solutions 
Agave Energy Co 
Avanti Exploration La Llc 
Birchill Exploration Corp 
Buckhorn Energy Services Llc 
Coral Hill Energy Ltd 
Empire Energy Ep 
Eoi Eagle Operating Inc 
EXL Petroleum LP 
Foundation Energy Management Llc 
K P Kauffman Company Inc 
Kasten Energy Inc 
Maha Energy Us Inc 
Mbi Oil  Gas Llc 
Merrion Oil  Gas Corp 
Newpek Llc 
Ngo Development Corp 
Oblaen Resources Llc 
Overflow Energy Llc 
Pinnergy Ltd 
Ravenwood Energy Corp 
RK Petroleum Corp 
Rockdale Resources Corporation 
Spur Resources Ltd 
Striker Petroleum Operations Llc 
Vast Petroleum of Kansas Llc 
Wexpro Company 
White Rock Energy Llc 
Element Petroleum Operating Llc 
Pennenergy Resources Llc 
Blackeagle Energy Services 
Trimont Energy Llc 
Ms Energy Services 
Koch Exploration Company, Llc 
Felix Energy Llc 
Jericho Oil Corp 
Susser Holdings Corp. 
Rampart Du Monde Partners Llc 
Arriva Energy Inc. 
Pt Saka Energi Indonesia 
Calmena Energy Services Inc. 
Great Prairie Energy Services Inc. 
Citadel Energy Services Llc 
Viper Energy Partners Lp 
Igas Energy Plc 
Dart Energy Limited 
Shalewater Solutions, Inc. 
Oaks Disposal Services Llc 
Jonah Energy Llc 
Frontier Midstream Solutions Llc 
Touchstone Exploration Inc. 
Verano Energy Ltd 
Vitesse Energy 
Ceno Energy Ltd. 
Pnoc-Ec 
Oak Valley Resources Llc 
Aquinas Energy Resources Inc. 
Koch Industries Inc. 
Petrologistics Lp 
Fulucai Productions Ltd. 
Blue Sky Langsa Ltd. 
Det Norske 
Loews Corporation 
Virtus Oil and Gas Corporation 
Southern Energy Group Inc. 
Azipac Ltd 
Mitra Energy Ltd 
Nine Energy Service, Inc. 
Petromont Colombia Sa 
Ares Management Lp 
Shell Midstream Partners Lp 
Nextera Energy Partners Lp 
Petrolia Se 
Lonestar West Inc 
Vamp Oilfield Services 
Snc Lavalin Group Inc 
Spectrum Corporation 
Canada Energy Partners Inc 
Jupiter Resources 
Pacer Construction Holdings Corporation 
Erick Flowback Services Llc 
Rod's Production Services 
Trilantic Capital Partners 
Fluid Delivery Solutions Llc 
Seventy Seven Energy Inc. 
Hawkwood Energy Llc 
Palomar Natural Resources 
Newton Energy Corporation 
Vard Holding Ltd 
Stx Canada Marine Inc 
Canyon Services Group Inc. 
Oeg Offshore Group 
Legend Production Holdings Llc 
Ngp Energy Capital Management Llc 
Caprock Oil Inc. 
Latigo Trucking Ltd 
Oilfield Water Logistics 
Desert Ntd Llc 
Mart Resources Inc 
Rio Bravo Energy Partners Llc 
Orlen Upstream 
Compressor Systems Inc. 
Quality Environmental Technologies 
Ormet Corporation 
Aspenleaf Energy Ltd. 
Caiterra International Energy Corp. 
Bowriver Development Canada Ltd. 
Canamax Energy Ltd. 
Republic Midstream Llc 
Trihawk Energy Ltd 
Nudevco Midstream Llc 
McCabe Petroleum 
Energy Capital Partners 
Nwp Industries Inc 
Venari Resources Llc 
Vine Oil & Gas 
Ingersoll-Rand Plc 
Anchor Point Energy Llc 
Falcon Crest Energy 
Cone Midstream Partners Lp 
G2x Energy 
Mistral Midstream Inc 
Southwest Treating Products Llc 
Big Lake Services Llc 
Beckman Production Services Llc 
Leucrotta Exploration Inc. 
ARC Logistics Partners Lp 
MPLX Lp 
Oiltanking Partners Lp 
Tesoro Logistics Lp 
Delek Logistics Partners, LP 
Golar Lng Partners Lp 
Emerge Energy Services 
Encap Investments 
PBF Logistics Lp 
Redhill Resources Corp 
Mapan Energy Ltd 
Ikkuma Resources Corp 
Dresser Rand Group Inc 
Siemens Ag 
Samchully Co. 
Hess Midstream LP 
Canaan Natural Gas Pe Funds 
Island Energy Partners Llc 
Goldman Sachs Group Inc 
Columbia Pipeline Group Inc. 
Formation Energy Lp 
Bandolier Energy Llc 
Spyglass Energy Group Llc 
Fairway Resources Partners II LLC 
Coronado Midstream Llc 
California Resources Corp. 
Fleur De Lis Energy Llc (FDL) 
Fairmount Santrol 
Nextera Energy Inc. 
LIG Assets Inc. 
Cp Resources Llc 
Gp Ii Energy Inc. 
Westoil Llc 
Millennium Energy Corp. 
Irongate Energy Services 
Sun Tubular Services 
Flatonia Energy Llc 
Eagle Minerals Inc. 
Crs Proppants 
Petrowest Corporation 
Trans Carrier Ltd. 
Trans Carrier Rentals Ltd. 
Tidewater Inc. 
Gas Natural Inc. 
Terra Nova Energy Ltd. 
Marsa Energy Inc 
Canelson Drilling Inc. 
Eagle Ford Minerals Llc 
Sk Group Ltd. 
Antero Midstream Corporation 
Bakken Hunter Llc 
J-W Wireline Company 
Tier 1 Energy Solutions 
Avenger Oil Tools 
Us Enercorp 
Velocity Midstream Partners Llc 
Azure Midstream 
Westwater Energy 
Magnum Oil Tools 
Double Eagle Development 
Brookfield Infrastructure Group 
Tall City Exploration Llc 
The Lubrizol Corporation 
Range Royalty Limited 
Scottish Power Generation Ltd. 
Sbg Energy Services Llc 
Superior Disposal Services Llc 
Savant Alaska Llc 
Toro Oil and Gas Ltd 
Scana Corporation 
Cimarron Energy Inc. 
Curtiss-Wright Corp. 
Turnbridge Capital Llc 
Citation Resources Ltd. 
Mol Group 
American Energy Utica Llc 
Gulfsands Petroleum Plc 
Start Scientific Inc 
Bps Operating Services Llc 
Dove Energy Bv 
Willbros Group, Inc 
Sprott Toscana 
Pinnacle Midstream Llc 
Lpc Crude Oil Marketing Llc 
Sea Oil Ltd 
Laurel Mountain Energy Llc 
Weir Oil & Gas 
Delek Drilling 
Energulf Resources 
Hiland Partners 
Maple Leaf Royalties Corp 
Value Creation Inc. 
Alberta Oilsands Inc 
Energean Oil & Gas 
Ihs Inc. 
Kicking Horse Energy Inc. 
Magnum Development Llc 
Santa Fe Midstream LLC 
Virginia Hills Oil Corp 
Polaris Drilling Inc. 
Wood Mackenzie 
American Impact Energy 
Legion Terminals Llc 
Midwestern Oil and Gas Company Ltd 
Dow Chemical 
Viking Investments Group Inc 
Tanager Energy Inc 
Verisk Analytics Inc. 
Vtti Energy Partners Lp 
Nucor Corporation 
Delek Us Holdings 
Moda Midstream Llc 
Africa Energy 
Step Energy Services Ltd 
Maple Leaf 2012 Ii Energy Income Ltd 
Franks International 
Tmk Group 
Aiteo Eastern E&p Co. Ltd. 
Coachman Energy Partners Llc 
Condor Petroleum 
Blackrock Inc. 
Timco Services Inc. 
Stonehaven Exploration Ltd. 
Oaktree Capital Management 
Macquarie Capital Group Ltd. 
Brookfield Asset Management Inc. 
Nuevo Midstream Dos Llc 
Argos Resources Ltd 
Brazos Midstream Holdings Llc 
Atlas Energy Group Llc 
Boulder Energy Ltd 
Aveda Transportation and Energy Services 
Granite Oil Corp 
Core Laboratories N.V. 
Southern Propane Inc. 
Striker Exploration Corp 
Paloma Partners Iii Llc 
Tall Oak Midstream II, LLC 
Suds Properties Llc 
T-Rex Oil Inc. 
Luxe Energy Llc 
Sunoco Lp 
QGEP Participacoes SA 
Esso (Thailand) Public Company Ltd 
SNGN Romgaz SA 
Texas South Energy 
Royal Energy Resources Inc. 
Maverick Drilling & Exploration Ltd 
Carbon Natural Gas Company 
Sanchez Production Partners Lp 
Sequa Petroleum Nv 
Uk Oil & Gas Investments 
Delek Energy 
Foreland Investments Lp 
Harbour Energy Ltd. 
Union Group 
Hydrocarbon Exploration Peru Ltd. 
Carrier Energy Partners Ii Llc 
Kanata Energy Group Ltd 
Horizon Petroleum Plc 
Gravity Midstream Llc 
Trigeant Ltd. 
ARC Financial Corp 
Ascent Resources LLC 
White Knight Production LLC 
Superior Plus 
Schoeller-Bleckmann 
Akastor ASA 
American Water Works Company Inc. 
Logan International Inc. 
CT Energy Holding SRL 
PEDEVCO Corp. 
Tudor Pickering Holt & Co 
Montana Exploration Corp. 
Powder Mountain Energy Ltd. 
NOW Inc. 
Odessa Pumps and Equipment Inc. 
Ontario Teachers Pension Plan 
Equilon Enterprises LLC 
Pennsylvania Services Corporation 
Permian Resources Corp. 
Fifth Creek Energy 
StonePoint Energy Inc. 
Amistad Energy Partners LLC 
Ameredev, LLC 
Source Rock Royalties Ltd 
Navigator Energy Services LLC 
Covey Park Energy LLC 
Fairway Energy Partners LLC 
Hawkeye Midstream LLC 
United Energy Trading LLC 
Red Bluff Resources Holdings, LLC 
HRG GROUP, INC. 
Kiowa Oil Company 
America Resources Exploration 
Seabourn Oil Company 
Madison PetroGas Ltd. 
Pacific Exploration and Production Corp 
North Sea Midstream Partners 
Ajax Resources LLC 
Navitas Midstream Partners LLC 
Element Petroleum III LLC 
Ageron Energy, LLC 
Arris Operating Company 
Citizen Energy III LLC 
Cobalt Environmental Solutions 
CP Exploration II, LLC 
Excalibur Resources LLC 
Finley Resources Inc 
HRM Resources LLC 
JPM  EOC Operating Inc. 
Juneau Energy Inc 
MD America Energy LLC 
Merit Energy Company 
Panther Energy Company II, LLC 
Pintail Oil and Gas, LLC 
RED Mountain Energy 
Red Rock Resources, L.L.C. 
Three Rivers Operating Co III LLC 
Verdad Resources LLC 
Zarvona Energy LLC 
Laramie Energy II LLC 
Quadrant Energy Australia Limited 
Altura Energy Inc. 
Founders Oil and Gas LLC 
Jovian Resources LLC 
Comancheria Energy Resources LLC 
Leor Resources LLC 
Sanchez Technologies 
Covanta Holding Corporation 
Waste Recovery Solutions Inc. 
Chesapeake Waste Solutions 
TRC Companies Inc. 
Wolfberry Partners Resources LLC 
Canada Pension Plan Investment Board (CPPIB) 
USD Partners LP 
Armstrong Oil & Gas, Inc. 
DEA Deutsche Erdoel AG 
Juniper Resources LLC 
Ward Energy Partners 
Kaisen Energy Corp 
Quintana Energy Services 
Travis Peak Resources LLC 
FDL Operating LLC 
Trail Ridge Energy Partners II LLC 
Moss Creek Resources, LLC 
IOG Capital LP 
LOLA Energy 
EnQuest PLC 
Anegada Energy Corp. 
Bison Oil & Gas II LLC 
Noble Midstream Partners LP 
Rimrock Resource Partners LLC 
Evolution Midstream LLC 
Erick's Holdings LLC 
Angelus Private Equity Group 
Texegy LLC 
ISQ Global Infrastructure Fund 
I Squared Capital 
Kiwi Acquisition Corp. 
UOP Russell LLC 
EdgeMarc Energy 
Keane Group 
Orbit Energy Partners LLC 
NP Resources LLC 
PetroGranada Limited 
N2 
Stone Pump & Trench 
Pipeliner's Warehouse Inc. 
Horizon Energy Partners LLC 
Petro Vista Energy Corp. 
PetroShare Corp. 
WaterBridge Resources LLC 
Percussion Petroleum I LLC 
Zenith Energy 
Resource Energy Partners LLC 
Terra Energy Partners LLC 
Petrogas E&P 
Askarii Resources LLC 
Point Loma Energy Ltd. 
Black Mountain Oil & Gas LLC 
Fountain Quail Energy Services 
Alliance Petroleum Co 
Lucid Energy Group II LLC 
Haymaker Resources 
Silver Run Acquisition Corp 
Benefit Street Partners LLC 
Pegasus Optimization Managers LLC 
KJ Energy LLC 
Exterran Corporation 
Geo-Jade Petroleum Corporation 
Nathan Oil LLC 
Titanium Exploration Partners LLC 
One Stone Holdings II LP 
FluidOil Limited 
Davis Petroleum Acquisition Corp. 
Eagle Materials Inc 
Smart Sand Inc 
Pelican Energy Partners 
Cretic Energy Services 
Empresa Nacional de Petroleo 
White Star Petroleum LLC 
Casillas Petroleum Corp 
Tidewater Midstream and Infrastructure 
Par Pacific Holdings 
Archrock, Inc. 
EagleClaw Midstream LLC 
Sinoenergy Investment Corp. 
Fortuna Resources Holdings, LLC 
Energy Hunter Resources 
BXP Partners IV LP 
Two Eagles Resources 
Teal Natural Resources LLC 
Wyatt Oil + Gas Inc. 
Kansas Alliance Resources LLC 
Petrocapita Income Trust 
Hytop Well Servicing Inc. 
Surge Operating, LLC 
Blue Whale Energy 
W Energy Partners 
Plantation Petroleum Holdings III, LLC. 
Triumph Energy Partners LLC 
The Alberta Investment Management Corp.( AIMCo) 
TSSP 
Tournament Exploration Ltd. 
Campbell Development Group LLC 
Discovery Midstream Holdings LLC 
Burgess Energy Holdings LLC 
EnWater Solutions LLC 
Saltel Industries 
Omron Oilfield and Marine Inc. 
QStar, LLC 
Tanos Energy 
JP Morgan Securities 
ArcLight Energy Partners Fund VI, L.P. 
Engie E&P Deutschland GmbH 
York Capital Management 
Petrolatina Energy Ltd 
Mountain Capital Management 
Harel Group 
Silverback Exploration LLC 
IronHorse Resources LLC 
Nafta International BV 
Rising Star Resources Ltd. 
Southern Company 
1836 Resources Llc 
Explorer Pipeline Company 
Independence Resources Management 
Staghorn Petroleum Llc 
TEP Rocky Mountain Llc 
Wolf Midstream Inc. 
Pan American Energy LLC 
Ulterra Drilling Technologies LP 
American Securities LLC 
Sabinal Energy LLC 
J-W Energy Company 
Crimson Energy Partners III, LLC 
Protege Energy III LLC 
Crestone Peak Resources LLC 
PO & G Resources LP 
Deventa Energy Inc. 
Deep Gulf Energy II 
Grenadier Energy Partners 
Salt Creek Oil LLC 
Whistler Energy II, LLC 
Align Midstream Partners LP 
Goodnight Midstream 
Sandbox Enterprises LLC 
Sequitur Energy Resources, LLC 
299 Resources LLC 
Guidon Energy 
Bridgeport Pty Ltd. 
Lehm Capital Partners, Ltd 
Trees Capital Partners Ltd. 
Rubicon Oilfield International 
Charger Shale Oil Co., LLC 
Sentinel Peak Resources LLC 
Front Range Resources Ltd. 
Prairie Provident Resources Inc. 
Riverbend Oil & Gas 
American Well Service LLP 
Arsenal Capital Partners 
NCH Corporation 
Clariant 
GEP Haynesville LLC 
InPlay Oil Corp. 
Noble Energy Partners 
Krewe Energy LLC 
Rioco Partners Ltd. 
Perseville Investing Inc. 
Mars Oil Pipeline Company 
Odyssey Pipeline LLC 
CP Exploration II, LLC 
Tundra Energy Marketing Limited 
US Energy Development Corp 
Veritas Energy Partners Holdings LLC 
Colgate Energy Partners III LLC 
Mid-Con Petroleum LLC 
Double Eagle Energy Permian LLC 
Rockcliff Energy II LLC 
Upstream Exploration LLC 
Murphy Energy Corp 
Blackhawk Specialty Tools LLC 
Fairway Resources Partners III, LLC 
Rebellion Energy, LLC 
Mammoth Energy Services Inc. 
Massif Oil & Gas 
TIW Corporation 
Samarium Energy & Resources Corp 
Woodland Midstream LLC 
H2O Midstream LLC 
Gulftex Energy 
Bayou City Energy Management LLC 
Advance Energy Partners 
Republic Energy Inc. 
Murray Energy Corporation 
Raging Bull Oilfield Services LLC 
Tana Exploration Company, LLC 
Four Corners Petroleum II LLC 
Bold Energy III LLC 
Foothills Exploration Inc. 
Key Link Assets Corp. 
OmniTRAX 
Terracor Group 
Brushy Resources Inc. 
Ranger Energy Services 
Bayou Workover Services LLC 
Magna Energy Services LLC 
CSL Capital Management 
Perella Weinberg Partners 
Red Rocks Energy Partners LP 
Fortress Investment Group LLC 
Titan Energy LLC 
SK E&S Co. Ltd 
SK E&P America Inc 
Drakkar Energy Ltd. 
Craft Oil Ltd 
West Street Energy Partners 
WildHorse Resource Development 
Solaris Midstream 
Stakeholder Midstream LLC 
Verdun Oil Company LLC 
RimRock Oil & Gas 
Crestline Investors Inc. 
Aethon Energy 
KLR Energy Acquisition Corp. 
Rosehill Resources Inc. 
Tellurian Inc. 
Alta Resources Development, LLC 
Trident Exploration Corp. 
BJ Services Company 
Allied Oil & Gas Services 
Petrogas Company Inc. 
Ridgeback Resources 
Rockport Permian LLC 
Dog Day Inc. 
Tallgrass Development LP 
Peak Well Systems 
USG Properties Haynesville LLC 
Kimbell Royalty Partners LP 
Camber Energy Inc. 
Sendero Midstream 
ProPetro Holding Corp. 
Blue Ridge Mountain Resources Inc. 
Expedition Water Solutions 
Greenwell Energy Solutions 
Exclusive Energy Services 
Steelhead Petroleum Ltd. 
STL Resources LLC 
Alinda Capital Partners 
Kimmeridge Energy 
Carrier Energy Partners 
Core Appalachia 
Titan Frac Services LLC 
Crimson Energy Partners II, LLC 
Canaan Resource Partners 
Performance Wellhead & Frac Components Inc. 
Slingshot Supply Inc. 
WhiteWater Midstream 
Howard Energy Partners 
Bruin E&P Partners 
Caprock Midstream 
Continuum Energy Services 
Crescent Companies 
Enduro Resource Partners II L.P. 
Grenadier Energy II LLC 
Haymaker Minerals 
Jetta Permian 
Kodiak Gas Services, LLC 
Manzano Energy Partners I & II 
Motive Drilling Technologies 
Multilift 
O-Tex Pumping LLC 
Oak Ridge Natural Resources, LLC 
OneEnergy Partners, LLC 
Petro Waste Environmental LP 
Piedra Resources LLC 
Pivotal Petroleum Partners, LP 
Reliance Gathering LLC 
Southland Royalty Co. 
Springbok Energy 
Steppe Resources 
Unconventional Gas Resources 
Wishbone Energy Partners 
Australis Oil & Gas Limited 
Silver Run Acquisition Corp II 
Ameredev II, LLC 
Canyon Creek Energy LLC 
Admiral Permian Resources, LLC 
Mainline Energy Partners, LLC 
Luxe Energy II LLC 
Blue Pacific Assets Corp. 
PMI Resources Ltd. 
Patagonia Oil Corp 
Saturn Oil and Gas Inc. 
Taylor Frac, LLC 
Assala Energy Holdings Ltd 
Hurricane Services Inc. 
Castleton Resources LLC 
Energy 11, L.P. 
Energy 11 Operating Company, LLC 
Razor Energy Corp. 
Point Resources 
Development Capital Resources 
Chisholm Oil & Gas LLC 
Carbon Appalachian Company, LLC 
Waterous Energy Fund 
Fortem Resources Inc. 
Colony Energy LLC 
TPG Pace Energy Holding Corp 
Macquarie Infrastructure and Real Assets (MIRA) 
Great River Hydro LLC 
Petrolia Energy Corp. 
Osburn Minerals 
PetroLegacy Energy II, LLC 
Arkoma Leasing Operating, LLC 
Choice Completion Systems 
DJR Energy 
Silverbow Resources 
Chisholm Energy Holdings LLC 
Painted Pony Energy Ltd. 
Primavera Resources Corp. 
Valorem Energy LLC 
Oasis Midstream Partners LP 
Amplify Energy Corp. 
Corterra Energy Operating LLC 
On Point Oilfield Operations LLC 
World Oil Tools LLC 
Energy Maintenance Services (EMS) 
Middle Fork Energy Partners, LLC 
Bow River Energy Ltd. 
Miller Thomson & Partners LLC 
Encino Energy LLC 
Encino Acquisition Partners 
Sanchez Midstream Partners LP 
Protege Energy LLC 
S&S Star Water Solutions 
Viking Energy Group 
Silverback Exploration II LLC 
Shun Cheong Holdings 
Greenfield Midstream 
Obsidian Energy Ltd. 
Tall Oak Midstream III LLC 
Cona Resources Ltd. 
Conquest Completion Services, LLC 
Samson Resources II LLC 
Sable Permian Resources, LLC 
Tessara Petroleum Resources LLC 
Bridas Energy USA, Inc. 
Mainline Midstream, LLC 
Kingfisher Midstream LLC 
Impact Exploration and Production LLC 
Andeavor 
Nearburg Exploration Co. 
West Lake Energy 
4AM Midstream 
Vitruvian Exploration IV, LLC 
Roan Resources 
Eureka Midstream LLC 
Spectrum Tracer Services 
Robotic Drilling Systems AS 
Verus Petroleum 
Bayerngas Norge 
Torxen Resources 
Strath Resources Ltd 
Villanova 4 Oil Corp 
Cuda Oil & Gas 
Pipestone Energy Corp 
Mount Bastion Oil And Gas 
Steel Reef Infrastructure Corp. 
Fury Resources Inc 
Georox Resources Inc. 
Kalnin Ventures LLC 
Oildex 
Phoenix DAS 
Pin Oak Energy Partners 
Reliance Marcellus II, LLC 
Aker BP 
Brookside Energy Limited 
Perdure Petroleum LLC 
Iron Bridge Resources Inc. 
International Petroleum Corp. 
Trident Energy 
O-Tex Holdings Inc. 
Elevate Midstream Partners LLC 
Wyatt Water Solutions LLC 
Black Mountain Disposal 
Driftwood Energy Partners 
Pulse Oil 
Bow Energy Limited 
Silver Creek Midstream, LLC 
Greylock Energy 
Resource Rock Exploration 
Pegasus Resources 
ATX Energy Partners 
Cortona Energy 
Cox Operating LLC 
Olympus energy, llc 
Tap Rock Operating LLC 
Xpr Resources LLC 
Little Rock Resources 
Rocky Creek Resources, LLC 
CNX Resources 
Exponent Energy III LLC 
Deeprock Development 
Vertex Resource Group 
Sonic Oilfield Services 
Winright Resources LLC 
CNX Midstream Partners 
Northwoods Energy LLC 
Quanah Energy LLC 
Stronghold Energy II LLC 
Firehawk Oil and Gas 
Lotus Midstream 
Mach Resources 
Tamar Petroleum 
HighPoint Resources 
CIG Logistics 
Lubbock Energy Partners 
Titan Chalk Inc. 
Haloroc Technologies Inc. 
Waste Management 
OPTrust 
USG Energy Producer Holdings 
Arkoma Drilling LP 
Silverpeak 
Crestwynd Exploration 
Ensight Iv Energy Management LLC 
Nickel Road Operating LLC 
Resource Energy Can-am LLC 
Echo Energy 
North Haven Infrastructure Partners II 
Maverick Natural Resources LLC 
Salt Creek Midstream LLC 
Birch Permian Holdings 
Riviera Resources 
Pure Acquisition Corp. 
HighPeak Energy 
Pony Oil LLC 
Presidio Petroleum LLC 
Osprey Energy Acquisition Corp. 
Royal Resources 
DoublePoint Energy LLC 
Harvest Oil & Gas Corp. 
Rio Grande LLC 
Rockdale 
Evergreen Natural Resources LLC 
Eagle Energy Partners LLC 
Summit Discovery Resources II LLC 
Jetstream Oil and Gas 
Utica Resource Operating LLC 
Fremont Petroleum 
Eagle Energy Inc. 
Magnolia Oil & Gas 
Athlon Solutions LLC 
Harvest Midstream Co. 
Scout Energy Partners 
Mission Creek Resources, LLC 
APEG Energy LP 
PCORE Exploration and Production I LLC 
Pieridae Energy 
XRI Holdings, LLC 
Momentum Minerals 
Flywheel Energy LLC 
Equinor 
Birch Hill Equity Partners Management 
Bodel Holdings LLC 
Perry Point Holdings LLC 
Lagoon Water Solutions 
Salt Brush Energy 
Tall City Exploration III LLC 
Riley Exploration Permian Inc. 
Falcon Minerals 
WhiteHorse Energy LLC 
Grayson Mill Energy 
Overflow Energy Stack LLC 
Vista Disposal Solutions LLC 
BKV Corporation 
SandPoint Resources LLC 
iLandMan 
KLX Energy Services 
Motley Services, LLC 
Equitrans Midstream Corp. 
Orion Pipeline LLC 
Alerion Gas Axa LLC 
Revolution Resources 
Energy Transfer LP 
Franklin Mountain Energy, LLC 
Shelby Shale LLC 
Altus Midstream Co. 
Dominion Energy 
RockRose Energy Plc 
Alpha Energy Inc. 
Visionary Resources LLC 
Montage Resources Corp. 
Red Wolf Natural Resources LLC 
Hornet Midstream 
Brigham Minerals Inc. 
First Infrastructure Capital Advisors LLC 
The Weir Group 
OMNI Environmental Solutions 
Force Environmental Solutions LLC 
Energy Funders 
Ensign Natural Resources LLC 
Spur Energy Partners LLC 
Rattler Midstream LP 
Highwood Oil Company Ltd. 
Pacific Oil and Gas Ltd 
Woolpert Inc. 
Geomatics Data Solutions Inc. 
Gravity Oilfield Services Inc. 
Wing Resources LLC 
Elite Compression Services LLC 
Mesquite Services LLC 
Bison Oilfield Services LLC 
WildFire Energy 
Bayshore Energy TX LLC 
Colony Capital 
Titus Oil & Gas Production, LLC 
Spartan Energy Services 
CP Energy Services 
Qatar Investment Authority 
Western Midstream Partners, LP 
Calima Energy Inc. 
AllDale Minerals II, LP 
AllDale Minerals LP 
Will Energy Corp. 
Santa Elena Minerals, LP 
Eco-Energy Inc. 
Tracker Resource Development III Llc 
Pickering Energy Partners 
Var Energi AS 
Hillstone Environmental Partners LLC 
Meade Pipeline Co LLC 
Point Energy Partners Petro LLC 
Firebird Energy LLC 
Woodland Midstream II LLC 
Felix Water LLC 
Saltwater Disposal Systems, LLC 
WaterWorks Corral Creek, LLC 
Edison SPA 
Neptune Energy Group Holdings Ltd. 
Basalt Infrastructure Partners II GP Limited 
Third Coast Mistream 
DTE Midstream 
Momentum Midstream 
Javelina Oilfield Inc. 
Core International LLC 
Stonehorse Energy Limited 
Vision Resources, Inc. 
Mustang Extreme Environmental Services 
Aria Rose Oilfield Solutions 
Fountain Quail Water Treatment 
Converge Midstream LLC 
InstarAGF Asset Management Inc. 
Paloma Partners IV, LLC 
Nextier Oilfield Solutions 
Starwood Energy Group Global LLC 
Pine Wave Energy Partners 
Buckhorn Resources 
Cordero Energy Resources LLC 
Ironwood Midstream Energy Partners II, LLC 
Canes Midstream LLC 
SitePro 
Integrated Control Solutions 
McKenzie Energy Partners LLC 
Jones Energy II Inc 
IFM Investors Pty Ltd 
ILX Holdings LLC 
Sheridan Holding Company II LLC 
Apergy Corp. 
Juneau Oil & Gas LLC 
Citizen Energy II LLC 
Navitas Petroleum 
Citizen Energy Holdings LLC 
Superior Pipeline Co. LLC 
Tumbleweed Midstream LLC 
BlackGold Capital Management 
Frack Shack Inc. 
Sandtinel 
Headwater Exploration Inc. 
KeyBank 
Percussion Petroleum II, LLC 
Black Bear Transmission LLC 
Carbon Energy Corp. 
Return Energy Inc. 
MCM Energy Partners, LLC 
Sixth Street Partners LLC 
Puma Energy Ltd. 
Mesquite Energy Inc. 
Topaz Energy Corp. 
MorningStar Partners LP 
Bedrock Production, LLC 
Spartan Delta Corp. 
Dow Inc. 
Watco Companies LLC 
BCE-Mach II LLC 
BCE-Mach III LLC 
Patriot Well Solutions LLC 
Vencer Energy 
Reset Energy 
Heroes Energy Solutions 
Noralis Inc. 
Pacific Canbriam Energy 
Orion Resource Partners 
Red Stone Resources LLC 
Rising Phoenix Royalties 
Pin Oak Midstream LLC 
EF Resources Inc. 
PHX Minerals Inc. 
Luco Energy Pty. Ltd. 
Xcl Resources 
Easton Energy LLC 
Gondola Resources LLC 
BWC Terminals 
Woodcote Oil Corp. 
ubitricity 
NEO Energy 
Black Swan Operating, LLC 
Vine Energy Inc. 
Petro Viking Energy Inc. 
Undisclosed 
Validus Energy 
SandRidge Mississippian Trust 
89 Energy III 
APA Corp. 
Civitas Resources Inc. 
Alamo Pressure Pumping 
Swallowtail Royalties 
i3 Energy 
Coterra Energy 
Ranger Oil Corp. 
Diversified Energy Company plc 
Crescent Energy Company 
Desert Peak Minerals 
Clearfork Midstream LLC 
Chief E&D Holdings 
Bighorn Permian Resources LLC 
Exaro Energy III LLC 
ProFrac Holding Corp 
Capricorn Energy 
Lucero Energy Corp. 
Alliance Group 
Park Energy Services LLC 
Great Texas Compression LLC 
Cogent Midstream 
Sitio Royalties Corp. 
Double Eagle Energy IV LLC 
Foundation Minerals 
Chord Energy 
Bricktown Energy 
Haymaker Minerals & Royalties III 
Fundare Resources Co. 
Avant Natural Resources 
Xcl Midstream 
Alpha Energy Partners 
IOG Resources II, LLC 
Vital Energy, Inc. 
Ridgemar Energy, LLC 
Mach Natural Resources LP 
QuarterNorth Energy 
Prairie Operating Co 
TG Natural Resources 
IKAV 
QB Energy 
KODA Resources, LLC 
TXO Partners, L.P. 
 				
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