|
| A&D |
Albrecht & Associates Inc. | Alta Mesa Holdings, LP | Cornerstone Acquisitions and Mgmt | | Discovery Capital | Duke Energy | GasRock Capital |
| Oil & Gas Clearinghouse | Oil and Gas Properties | OilProperties.com |
| Petroleum Place | Petroleum Place Energy Advisors | PLS Inc. |
| Randall & Dewey, Inc. | Richardson Barr & Co | Richardson Barr & Co |
| Richardson Barr & Co | Torch Energy | Vision A&D Energy Advisorts |
| Weisser, Johnson & Co. | Wellspring | White Stone Energy |
| Worth Energy LLC |
| Bank/ Financial Institution |
AIG Financial Products | Amegy Bank of Texas | Bank of Texas - Energy Lending | | BlackRock Energy Capital | Community National Bank | Compass Bank |
| Deutsche Bank Securities | Eagle Investments | Fortis Capital Corporation |
| Four P Investments Inc. | Frost Bank | Guaranty Bank |
| Hummingbird Investments | LNB Energy Advisors | Lucas Capital Managment |
| MacQuarie Holdings (USA) Inc. | Madison Capital Management | NGP Capital Resources |
| Petrobridge Investment Management, | TCW Asset Management | Texas Capital Bank |
| The Royal Bank of Scotland | Western National Bank |
| Consultant |
A.D. James | Adkins Corp. R.L. | Bettis Environmental | | C.E. Ostrander, P.E. | Calhoun, Blair & Associates | Cawley, Gillespie & Associates |
| CEC Energy Consultants | Christopher Simon | Collarini Engineering Inc. |
| Coutret & Associates | Degolyer and MacNaughton | Don Ray George & Associates |
| Eric J. Hyman & Associates | Forrest A. Garb & Associates, Inc. | Foundation Energy Investments |
| Fred S. Reynolds & Associates | Glenn Harrison Petroleum Corp. | H J Gruy & Associates |
| H. Lee Matthews | Haack Petroleum Consultants, Inc | Haas Petroleum Engineering Services |
| Harrison Lovegrove & Co | Hendrickson Engineering | Hite, McNichol & Lonquist, Inc. |
| Holditch Resevoir Technologies | Interval Inc. | J.B. Garrett Engineering |
| Jackson Petroleum Consultants | James E. Smith & Associates, Inc | John Middleton |
| Johnston & Cloud | Kahan & Associates | LaRoche Petroleum Consultants |
| Lee Engineering | Mark L. Shidler, Inc. | Miller and Lents |
| Netherland, Sewell & Associates | Oil and Gas Audit | Paul Clevenger Petroleum Consultant |
| Paul Clevenger Petroleum Consultant | Permian Consulting | PGH Engineers, Inc. |
| Pinnacle Energy Services, LC | Platt, Sparks & Associates | Pressler Petroleum Consultants, Inc |
| Questa Engineering | R A Lensor & Assoc | R.T. Garcia & Co. |
| Robert W. Forson, P.E. | Ryder Scott Company | Schlumberger Data and Consulting |
| Sproule Associates, Inc - Houston | Steven Carter | T. Bruce Petitt, P.E. |
| The Discovery Group | The Scotia Group | The Strickland Group |
| Traton Engineering | Triangle Petroleum Consultants | W.D. Von Gonten & Co. |
| Wessels Petroleum | William M. Cobb & Associates | Zemp Energy Management |
| Producer/ Operator |
AB Resources, LLC | Abraxas Petroleum Corporation | AgHorn Energy Inc. | | Alpar Resources | Alpine Resources | Alta Mesa Resources |
| American Energy Operations | American Energy Partners Inc. | Ameritex Minerals |
| Approach Resources Inc. | ARES Energy | Asher Resources Inc. |
| Aspen Integrated Oil & Gas, LLC | ATP Oil & Gas Corporation | Aurora Oil & Gas |
| Austex Enterprises | Avalon Energy | B.C. Operating Company |
| Barry White & Company | Basa Resources, Inc. | Bass Energy Co |
| Bass Enterprises | Battlecat Operating Company | Bengle Energy |
| Beta Oil & Gas | Bevo Production | Black Stone Minerals Company |
| Blue Dolphin Exploration | Bommer Engineering | BreitBurn Energy Company |
| BreitBurn Energy Company | Bridwell Oil Co. | Brighton Energy |
| Brista Energy Corp. | Brothers Petroleum | Broughton Operating Corporation |
| Browning Oil Co. | Bruington Engineering LLC | Buena Vista |
| BWOC | C E Harmon Oil, Inc | Cabot Oil & Gas |
| Calver Resources | Camden Resources | Cano Energy Corporation |
| Canyon Oil & Gas Inc. | Capco Offshore, Inc | Cardinal Resources |
| Cargill Inc. | Carnes Oil Corporation | Carter E&P, LLC |
| Castle Peak Resources | CBM Engineering | CDX Gas LLC |
| Cenesia Petroleum Corp. | Centurion Exploration | Champlin Exploration |
| Charter Royalty | Chateau Oil & Gas Inc. | Cheif Oil & Gas |
| Chesapeake Energy | Cheyenne Petroleum Company | Chief Oil & Gas, LLC |
| Cima Energy | Cirrus Production Co. | Classic Petroleum Inc. |
| Clayton Williams Energy | Coldren Oil & Gas Company | Comstock Resources Inc. |
| Concert Capital Resources | Constellation Energy | Continental Land & Fur |
| Continental Resources Inc | Core Energy | Corrida Oil & Gas, Inc |
| Cox Gas Corporation | Cox Oil LLC | Crawford Energy Operating |
| Crest Engineering Services | Crimson Energy Co. LC | Cypress Operating |
| D & J Oil Co. | Dart Energy | Denton Engineering |
| Dernick Resources Inc. | Diverse Management Company | Doyle Hartman Oil Operator |
| Dragon Group | DTE Gas Resources | Duer Wagner III, Inc. |
| E & B Natural Resources | EBR Energy LP | EIG Oil & Gas LLC |
| Eland Energy Inc. | Elfin Oil Inc. | Elk Creek Energy, LLC |
| Emerald Operating Co. | Emerald Operating Company | EnCana |
| Encore Energy, LLC | Endeavor Energy Resources | Endeavor Energy Resources |
| Enerfin Resources Co. | Energy Reserves Group LLC | Energy Resources Technology |
| Energy Ventures LLC | ENRE Corporation | Evergreen Resources |
| Explore Enterprises | Fagadau Energy Corporation | Far East Energy |
| Fife Oil & Gas | Finley Resources | Five States Energy Co LLC |
| Flash Gas & Oil Southwest | Flatrock Energy Partners, Inc. | Foothill Energy LLC |
| Foundation Energy Company, LLC | Future Petroleum Corp. LLC | Gaither Petroleum Corp. |
| Gasco | GeoMet Inc. | George D. Daly Jr. & Associates |
| Ginger Oil Co. | Goldston Oil Corp. | Goodrich Petroleum Corp. |
| H.L. Brown Jr. | Hal J. Rasmussen Operating Inc. | Hansford County Appraisal District |
| Harrigan Energy Partners, Inc. | Hartman Oil Company | Headington Oil Company |
| Hensoil | Holly Petroleum | Houston America Energy |
| Howell Oil & Gas | Huddleston & Co. Inc. | Hugh Landrum & Associates |
| Hurd Enterprises Ltd | I 43 Associates, Inc | Implicit Oil & Gas |
| ITX Corporation | J M Huber Corporation | J.I.L. Oil Company |
| J.P. Oil | Jackal Oil Co. | Jamex, Inc. |
| JHS Energy | JRB Oil & Gas Inc. | Kerns Oil & Gas Inc. |
| Kodiak | Kona Inc. | Krescent Energy Company LLC |
| KRS Resources, LLC | Lacy Operations Ltd. | LaGrange Acquisitions |
| Lake Ronel Oil Co. | Laneer Resources | Langham, Pepper & Associates |
| Lantana Resources, Inc. | Larance Engineering Company | Lario Oil & Gas |
| Larry O. Hulsey & Company | Lewis Energy Group | Liberty Energy Holdings |
| Life Royalties Inc. | Lighthouse Exploration, Inc. | Lindemuth & Associates |
| Linn Operating | Liverpool Production Co. | LLOG Exploration Company, LLC |
| Lo In Energy Corporation | Longview Producing Company | Louisianna Gas Development Corp. |
| Lynx Operating Co. Inc. | Mack Energy | Macquarie Securities USA, Inc. |
| Maguire Oil Company | Makar Production Company | Maritech |
| Martineau Petroleum | Matador Resources | Matix Oil Company |
| Maynard Oil Co | Mayne & Mertz Inc. | McClymond Inc. |
| McCoy Pet. Co. | MCX Exploration USA | Medallion Exploration |
| Midstates Petroleum Corporation | Mineral Technologies Inc. | Moriah Resources Inc |
| Mustang Drilling Ltd | Nadel & Gussman Permian, LLC | Nadel and Gussman, LLC |
| Nearburg Producing Co. | New Dominion | Nexen Petroleum USA |
| Nielson & Associates | Nippon Oil Exploration | Noble Royalties, Inc. |
| North American Oil & Gas, LLC | Novus Louisiana, Inc. | O'Brien Energy Company |
| Ochiltree County Appraisal District | Oculus Energy | Omimex Resources Inc. |
| Oracle Resources LC | Orion Oil and Gas, LLC | Oso Energy Resources |
| Output Exploration | Pacific Energy Resources | Paloma Resources |
| Panhandle Eastern Pipelin Co. | Panola Corporation | Patriot Exploration |
| Patterson Petroleum | Peak Energy | Pecos Production |
| Pelican Resources | Perenco | Permian Resources |
| Petro-Hunt | PetroEdge Resources, LLC | Petrohawk Energy, LLC |
| Petroleum Resource Management | PetroQuest Energy, Inc. | Petsec Energy |
| Phillips Inc. | Phoenix PetroCorp | Pickrell Drilling Co. Inc. |
| Plantation Petroleum | PPI Technology Services | Preston Exploration |
| Priam Oil Company | PrimeWest Energy Inc. | Progress Energy |
| Provident Energy | Quatro Oil & Gas | Questar Gas Company |
| Quintana Minerals Corp. | RCM Engineering | RDR Energy |
| Read and Stevens, Inc. | Red Chute Engineering | Redman Energy Corporation |
| Reef Exploration, Inc. | Resource Services International | RHB Inc. |
| RieChas USA, Inc | Rio Chama Petroleum | Riseden Services Inc. |
| Rock Energy Partners | Rodessa Operating Co. | Roma Oil & Gas, Inc. |
| Royalty Clearing House | RRG Energy | Rubis Oil, Inc. |
| Ruffian Resources LLC | Saga Petroleum Corp. | Savannah Oil and Gas LLC |
| ScotRock LLC | Scottish Oil | Scottsdale Oilfield Services |
| SDG Resources | Sherpa Energy Resources, LP | Shore Energy, LLC |
| Sierra Investment Partners LP | Sierra Pine Resources International | Sirgo |
| SND | Sojitz Energy Venture, Inc | Sonic Oil & Gas |
| Southern International Inc. | Southern International, Inc. | Statex Operating LLC |
| Sterling Exploration | Stetson Petroleum Corp. | Stonetex Oil Corp. |
| Strand Energy | Stroud Production LLC | Success Energy |
| Suchsland, Hoyt & Associates | Sun Coast Energy | T.W. McGuire & Associates, Inc. |
| Tana Exploration | Tarpon Oil & Gas | Tax Management Group |
| Taylor Natural Resources | Te-Ray Resources, Inc. | Tellus Operating |
| Tengasco, Inc. | Terrace Petroleum Corp. | Texakoma Operating LP |
| Texana Resources | Texas Comptroller of Public Account | Texas General Land Office |
| Texas independent Exploration | The Cymri Corp | The Exploration Company |
| The Flournoy Companies | The GHK Company | The GHK Company |
| The Hise Company | The Investment Company LLC | The Oxford Oil Co. |
| TMR Exploration | TNK-BP | Tom Campbell |
| TransAtlantic Petroleum Corp | Transcontinental/ Worldvest LLC | Trek Resources |
| Trinity Energy Corp. | Trinity Petroleum Engineering | Triumph Energy, Inc. |
| Triumph Petroleum Company | TrueStar Petroleum Corporation | Tufts Energy |
| Turner P. Burnette Estate | UP Petrolo Brasil Ldta | Venus Exploration |
| Verdad Oil & Gas | Versus Energy, Inc | Vintage Petroleum |
| Virgin Oil Company | Voyager Gas Corp. | Waco Oil & Gas Company |
| Wadi Petroleum, Inc. | Wagner Engineering | Walter Exploration |
| Watkins Production Co. | Westerly Exploration Inc. | Westland Energy, Inc |
| Westland Energy, Inc. | Whittier Oerating, Inc. | Wynn-Crosby Energy Company, Inc. |
| YUKOS Oil Company | Yuma Exploration |
