Clients
| Acadia Energy Holdings, LLC |
| AGIP Petroleum |
| Anadarko E&P Company LP |
| ANKOR Energy LLC |
| Antelope Oil Tools |
| Apache Corporation |
| APEX Oil & Gas, Inc. |
| Aqueos |
| Arena Offshore, LLC |
| Ashlawn Corporation |
| Bass Enterprises |
| BayCorp Resources |
| Beryl Oil & Gas |
| Black Swan Operating, LLC |
| Bois D’Arc Offshore Ltd |
| BOPCO, Inc. |
| Breton Energy |
| Browning Oil Company |
| Burlington |
| Byron Energy, Inc. |
| Castex Offshore, Inc. |
| Cavern Solutions, Inc. |
| CeeKay Gulf Coast, LLC |
| Central Crude Trucking, LLC |
| Century Exploration |
| Century Exploration N.O., LLC |
| CETCO Energy Services |
| Chesapeake Operating, Inc. |
| Chevron North American E&P Co. |
| ChevronTexaco |
| Cholla Petroleum, Inc. |
| Cimarex Energy Co. |
| Clovelly Oil Company, LLC |
| Concho Resources/COG Operating |
| Conn Energy, LLC |
| ConocoPhillips Company |
| Continental Alloys |
| Continental Resources, Inc. |
| Cox Operating, LLC |
| Cronus Offshore, Inc. |
| Crosby Marine Services |
| Crosby Tugs, LLC |
| Cutbow Operating, LLC |
| Denbury Management, Inc. |
| Diamondback Energy, Inc. |
| Dimension Energy Company, LLC |
| Dominion Exploration & Production |
| Down Hole Drilling Services |
| Driftwood Energy Operating Company |
| Dune Energy |
| Dynamic Group, LLC |
| Eagle Consulting, LLC |
| East Cameron Partners |
| EDG, Inc. |
| Edison Chouest Offshore |
| Eland Energy, Inc. |
| Eminent Oil Tools |
| Empire Midstream |
| Enel North America, Inc. |
| Energen |
| Energy Partners, Ltd |
| Energy Reserves Group II, LLC |
| Energy XXI Services, LLC |
| ENI US Operating Co. |
| EnVen Energy Ventures, LLC |
| EOG Resources, Inc. |
| ERT GOM, Inc. |
| EXCO Resources |
| Expert Oil & Gas, LLC |
| Express Energy Service |
| ExxonMobil |
| Flat Creek Resources, LLC |
| Force Energy |
| Forest Oil Corporation |
| Freeport McMoran |
| Furie Operating Alaska, LLC |
| Genesis Energy Services |
| Geostock Sandia, LLC |
| Goldking Energy Corporation |
| Goodrich Petroleum Company, LLC |
| Great Bay Operations, LLC |
| Greenlake Energy |
| Grosse Tete Well Services |
| Guidon Energy Management Services |
| GulfSlope Energy |
| Helis Oil & Gas, LLC |
| Helix Energy Solution, Inc. |
| Hibernia Resources III, LLC |
| HilCorp Energy |
| Houston Energy, LP |
| Hunt Petroleum Corporation |
| Hydra US, LLC |
| IKAV Energy, Inc. |
| International Corrosive Services, LLC |
| Jagged Peak Energy, LLC |
| Kindee Oil & Gas Louisiana |
| King Operating Company |
| Krewe Energy |
| Lavaca River Operating |
| Legacy Resources Co, LP |
| Legend Natural Gas, LLC |
| Lime Rock Resources |
| Linder Oil Company |
| LLOG Exploration Co. |
| Lonestar Resources America, Inc. |
| Longview Production Company |
| Louisiana Oilfield Services |
| M-I SWACO, LLC |
| Magnum Hunter |
| Manti Operating Company |
| Marathon Oil Company |
| Mariner Energy, Inc. |
| Marks Operating Co. |
| Marquis Resources, LLC |
| Martin-Marks Operating Company |
| Marubeni Oil & Gas |
| Matador Production Company |
| Maverick Natural Resources, LLC |
| MC Offshore Petroleum, Inc. |
| McMoran Oil & Gas |
| Mesa Gulf Coast, LLC |
| Navidad Operating Company, LLC |
| Newfield Exploration Company |
| Newpark Resources |
| Nexen Petroleum USA, Inc. |
| NEXT Energy Services |
| Oil & Gas Rental Services, Inc. |
| Oilfield Instrumentation USA |
| Olin Corporation |
| ORB Exploration, LLC |
| OXBOW Petroleum, LLC |
| Oxy USA, Inc. |
| Palm Energy Offshore, LLC |
| PB Energy Storage Services |
| PEL Gulf Coast, LLC |
| Performance Drilling |
| Petro-Hunt, LLC |
| Petroci USA, Inc. |
| Petrofac, Inc. |
| PetroQuest Energy, LLC |
| Petsec Energy, Inc. |
| Phoenix Corp |
| Phoenix Exploration Company |
| Pilot Resources |
| Pioneer Natural Resources, Inc. |
| Pisces Energy, LLC |
| Plains Exploration & Production |
| Premium Oilfield Technologies, LLC |
| Prime Natural Resources, Inc. |
| Production Management Corporation |
| Razor Exploration, LLC |
| Renaissance Offshore |
| Rhino Operating Company, LLC |
| Ridgelake Energy, Inc. |
| ROCC Oil & Gas L.P. |
| S2 Energy |
| Saipem |
| Samedan Oil Company |
| Samson Resources Company |
| Saratoga Resources, Inc. |
| Scientific Drilling International |
| Semco Maritime |
| Shell Exploration & Production Co. |
| Silver Hill Energy Partners, LLC |
| Sonoran Energy, Inc. |
| Southern Oil of Louisiana |
| Southwestern Energy Production Co. |
| Spartan Offshore Drilling |
| Spinnaker Exploration |
| Square Mile Energy, LP |
| Stellar Drilling Fluids, LLC |
| Stone Energy Corporation |
| Strata, LLC |
| Strawn Oil Company |
| Sundown Energy, LP |
| Sunland Construction |
| Survival Systems International |
| Talos Energy, LLC |
| Tana Exploration Company, LLC |
| Tap Rock Operating, LLC |
| Tarpon Operating & Development |
| TDC Energy, LLC |
| TDC Energy, LLC |
| Tellus Operating Group, LLC |
| Tesco Corporation |
| Tetra Applied Technologies, LP |
| TETRA Technologies, Inc. |
| Texas Oil Production, LLC |
| Texas Petroleum Investment Co. |
| Texas United Management Corporation |
| Third Coast Infrastructure, LLC |
| Three Rivers Oil & Gas |
| Thyssen Petroleum company |
| Total E&P USA, Inc. |
| Total Pump & Supply |
| Triangle Oil & Gas, Inc. |
| Trinity Operating, LLC |
| Trinity River Energy, LLC |
| Triple Crown Resources, LLC |
| Triple Five Energy Resources/KD Energy, LLC |
| United States Environmental Services, LLC |
| UNOCAL |
| Upstream Exploration, LLC |
| Urban Oil & Gas Group, LLC |
| Venture Oil & Gas |
| Vine Oil & Gas |
| Virgin Offshore USA |
| Vitol Resources, Inc. |
| W&T Offshore |
| Wapiti Operating, LLC |
| Weatherford International, Ltd. |
| WCC Energy Group, LLC |
| White Fleet Abandonment, LLC |
| White Knight Resources |
| Wild Well Control, Inc. |
| Wildcat Drilling |
| Woodside Energy USA, Inc. |
| WSP USA, Inc. |
| Xpertflo |
| XTO Energy, Inc. |
| Yuma Companies |