| 1 | Acadian Gas Pipeline System | | Oil Operator | Jul 2024 |
| 2 | Alpine Energy, Inc. | | Oil & Gas Operator | Dec 1999 |
| 3 | Alpine Expl. Companies, Inc. | | Oil & Gas Operator | Jan 2024 |
| 4 | Amerada Hess Corporation | Houston, TX 77252 | Oil & Gas Operator | Aug 2013 |
| 5 | American Petrofina Co Of Texas | | Oil & Gas Operator | Jun 1985 |
| 6 | Arco O & G Co-Div Atl Rich Co | | Oil & Gas Operator | Feb 1994 |
| 7 | Ascent Energy, Inc | McKinney, TX 75069 | Oil & Gas Operator | Nov 2008 |
| 8 | Atc Realty Eight, Inc. | | Oil & Gas Operator | Nov 1988 |
| 9 | Atp Oil & Gas Corporation | Houston, TX 77027 | Oil & Gas Operator | Jun 2008 |
| 10 | Baby Oil, Inc. | | Oil & Gas Operator | Oct 2017 |
| 11 | Badger Oil Corporation | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2011 |
| 12 | Barataria Production SVCS, LLC | | Oil Operator | Sep 2009 |
| 13 | Barnett Drilling & Production | | Gas Operator | Oct 1986 |
| 14 | Biggs Resources, Inc. | | Oil Operator | Apr 1984 |
| 15 | Black Gold Production Company | | Oil & Gas Operator | Feb 1998 |
| 16 | Burlington Res Offshore Inc | | Oil & Gas Operator | Oct 2002 |
| 17 | Burlington Res Oil & Gas LP | Houston, TX 77079 | Oil & Gas Operator | Jun 2024 |
| 18 | C & VC, Inc. | | Oil & Gas Operator | Sep 1991 |
| 19 | Canlan Oil Company | | Oil & Gas Operator | Mar 1992 |
| 20 | Cardinal Oil & Gas, Inc. | | Oil & Gas Operator | Jun 1995 |
| 21 | Carl Oil & Gas Co. | Bakersfield, CA 93309 | Oil & Gas Operator | Dec 1995 |
| 22 | Castex Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 23 | Cedyco Corporation | Houston, TX 77227 | Oil & Gas Operator | Nov 2008 |
| 24 | Central Mineral Management Inc | | Oil & Gas Operator | Jul 1990 |
| 25 | Century Exploration Houston, Inc | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2011 |
| 26 | Chevron Pipe Line Company | Houston, TX 77001 | Oil Operator | Feb 2015 |
| 27 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Nov 2024 |
| 28 | Chroma Operating, Inc. | Washington, DC 20036 | Oil & Gas Operator | Jun 2016 |
| 29 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Nov 2024 |
| 30 | Claron Corporation | Houston, TX 77219 | Oil & Gas Operator | Nov 2024 |
| 31 | Clayton Williams Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Apr 2017 |
| 32 | Clovelly Oil Co. LLC | | Oil & Gas Operator | May 2024 |
| 33 | Clovelly Oil Co., Inc. | | Oil & Gas Operator | Dec 2008 |
| 34 | Comstock Oil & Gas -- La, Inc. | | Oil & Gas Operator | Mar 2005 |
| 35 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | Nov 2024 |
| 36 | Corpus Christi Oil & Gas Co. | | Oil & Gas Operator | Dec 1991 |
| 37 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 38 | Cox Oil & Gas, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2014 |
| 39 | D. C. Bintliff-McCormick O&G | | Oil & Gas Operator | Oct 1983 |
| 40 | Dalen Resources Oil & Gas Co. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2010 |
| 41 | Damson Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Mar 2005 |
| 42 | Daniel Oil Company | | Oil & Gas Operator | Jan 1983 |
| 43 | DCP, Inc. | | Oil & Gas Operator | Jun 1990 |
| 44 | Destin Operating Company, Inc. | | Oil & Gas Operator | Jan 2023 |
| 45 | Dew Oil And Gas Co.,Inc. | | Oil & Gas Operator | Dec 1989 |
| 46 | DKM Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2011 |
| 47 | Dominion Exploration & Production Inc | Houston, TX 77060 | Oil & Gas Operator | Apr 2015 |
| 48 | Duer Wagner & Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 1998 |
| 49 | Edward Oil Company | Youngsville, PA 16371 | Oil & Gas Operator | May 2024 |
| 50 | Edwin L. Cox | | Oil & Gas Operator | May 1986 |
| 51 | El Paso Production Gom, Inc. | | Oil & Gas Operator | Nov 2005 |
| 52 | Energy Corp. Of America, Inc. | | Oil & Gas Operator | Aug 1998 |
| 53 | Energy Resource Technology Gom, LLC | | Oil & Gas Operator | Oct 2019 |
| 54 | Energy Resources Oil & Gas Corp. | Amarillo, TX 79102 | Oil & Gas Operator | Jun 1994 |
| 55 | Energy Self-Service Oils, Inc. | | Oil & Gas Operator | Apr 2009 |
| 56 | Energy Xxi Gom, LLC | | Oil & Gas Operator | Dec 2023 |
| 57 | Energy Xxi Gulf Coast, Inc. | | Oil & Gas Operator | Dec 2008 |
| 58 | Energy Xxi Onshore, LLC | | Oil & Gas Operator | Dec 2023 |
| 59 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 60 | Enserch Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 61 | Equitable Petroleum Corp. | | Oil & Gas Operator | Jan 1999 |
| 62 | Evangeline Natural Resources, LLC | | Oil & Gas Operator | Jun 2024 |
| 63 | Expert Oil & Gas, L.L.C. | | Oil & Gas Operator | May 2024 |
| 64 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Nov 2024 |
| 65 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
| 66 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Nov 2024 |
| 67 | Fairview Producing Corp. | | Oil Operator | Jul 2001 |
| 68 | Fantome, LLC | | Oil Operator | Jan 2007 |
| 69 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 70 | Five-Jab, Inc. | Tomball, TX 77377 | Oil & Gas Operator | Nov 2024 |
| 71 | Florida Exploration Co | Aurora, CO 80014 | Oil & Gas Operator | Sep 1989 |
| 72 | Flynn Energy Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Mar 1993 |
| 73 | FMP Operating Co., LTD. PTN. | | Oil & Gas Operator | Mar 1990 |
| 74 | Forcenergy Gas Exploration Inc. | Miami, FL 33129 | Oil & Gas Operator | Aug 1996 |
| 75 | Forcenergy Inc | Miami, FL 33129 | Oil & Gas Operator | Mar 2015 |
| 76 | Forest Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 77 | Forman Exploration Company | | Oil & Gas Operator | Oct 1988 |
| 78 | Forman Petroleum Corporation | | Oil & Gas Operator | Aug 2001 |
| 79 | Fpco Oil & Gas Co. | New Orleans, LA 70160 | Oil & Gas Operator | Jul 2024 |
| 80 | Gas Producing Enterprises Inc. | | Oil & Gas Operator | Oct 1985 |
| 81 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 82 | Goodrich Oil Company | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2001 |
| 83 | Goodrich Petroleum Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2022 |
| 84 | Graham Expl LTD-DRLG PRNRSHP | | Oil & Gas Operator | Aug 1984 |
| 85 | Graham Oil And Gas, LTD. | Covington, LA 70434-3134 | Oil & Gas Operator | Aug 2013 |
| 86 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 87 | Graham-McCormick Oper. PRTSHP. | | Oil & Gas Operator | Aug 1989 |
| 88 | Grand Operating, Inc. | Addison, TX 75001 | Oil & Gas Operator | Dec 2020 |
| 89 | Greka Am Inc | Santa Maria, CA 93454 | Oil & Gas Operator | May 2013 |
| 90 | Grigsby Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2024 |
| 91 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 92 | GT Energy | | Oil & Gas Operator | Mar 1993 |
| 93 | Gulf Coast Crude O&G Co., Inc. | | Oil & Gas Operator | May 1982 |
| 94 | Gulf Oil Corp. | Denver, CO 80201-0599 | Oil & Gas Operator | Dec 2014 |
| 95 | Gulf South Operators, Inc. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2015 |
| 96 | Gulf South Pipeline Company, LLC | | Oil & Gas Operator | Jul 2024 |
| 97 | Gulf South Pipeline Company, LP | Houston, TX 77046 | Oil & Gas Operator | Dec 2020 |
| 98 | Halcon Resources Operating, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2013 |
| 99 | Helis Oil & Gas Company, L.L.C. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2023 |
| 100 | Hicks Production Co. | | Oil & Gas Operator | Apr 1991 |