| 1 | A. W. Sour, Jr. | | Oil Operator | Mar 2003 |
| 2 | Abco Petroleum Corp. | | Oil & Gas Operator | Feb 1999 |
| 3 | Addie, James & John Thornton | | Oil & Gas Operator | Dec 2024 |
| 4 | Alameda Oil Company | | Oil Operator | Mar 1998 |
| 5 | Apollo Petroleum Corporation | | Oil & Gas Operator | Dec 2012 |
| 6 | Atkins Production | | Oil Operator | Dec 2008 |
| 7 | B & K Operating Co., Inc. | | Oil Operator | Mar 2000 |
| 8 | B. J. Long | | Oil & Gas Operator | Nov 1989 |
| 9 | Bay Gas, LLC | | Oil & Gas Operator | Jun 2025 |
| 10 | Bel Oil Corporation | Jenks, OK 74037 | Oil & Gas Operator | Jun 2005 |
| 11 | BJT Properties Of Lasalle, LLC | | Oil Operator | Dec 2024 |
| 12 | Black Bayou Management Co Inc. | | Oil & Gas Operator | Aug 1980 |
| 13 | Bottomland Energy, LLC | | Oil Operator | Dec 2024 |
| 14 | Brushy Creek Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Oct 2025 |
| 15 | C6 Operating, L.L.C. | Keatchie, LA 71046 | Oil & Gas Operator | Oct 2025 |
| 16 | Caddo Oil Co.,Inc. | | Oil & Gas Operator | Apr 1987 |
| 17 | Campground Corporation | | Oil Operator | Nov 2023 |
| 18 | Cardinal Petroleum Corp Of La | | Oil Operator | May 2003 |
| 19 | Caspen Operating Company | Somerset, TX 78069 | Oil & Gas Operator | Mar 2008 |
| 20 | Castor Production, L.L.C. | | Oil Operator | Dec 2024 |
| 21 | Cavenham Energy Resources Inc. | | Oil & Gas Operator | Apr 1991 |
| 22 | Cavenham Energy Resrces Inc JV | | Oil Operator | Mar 1991 |
| 23 | Cavenham Forest Ind., Inc. | | Oil & Gas Operator | Nov 1987 |
| 24 | Cavenham Forest Ind., Inc. J V | | Oil Operator | Nov 1987 |
| 25 | Cenla Oil Company, LLC | | Oil Operator | Dec 2024 |
| 26 | Chadco, Inc. | | Oil Operator | Dec 2024 |
| 27 | Clements Energy, Inc. | | Oil & Gas Operator | Oct 1987 |
| 28 | Colgrade Investment Corp. | | Oil Operator | Apr 2004 |
| 29 | Cross Development Co. | | Oil Operator | Dec 1989 |
| 30 | Crown Zellerbach | | Oil & Gas Operator | May 1986 |
| 31 | Crown Zellerbach & Newton | | Oil Operator | May 1986 |
| 32 | D J Production | Pasadena, TX 77502 | Oil & Gas Operator | Mar 2025 |
| 33 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 2025 |
| 34 | Devon SFS Operating Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 35 | Diablo Oil Corp. | | Oil & Gas Operator | Apr 1989 |
| 36 | Donn G. Thompson, Et Al | | Oil Operator | Apr 1987 |
| 37 | Drake Energy Corporation | | Gas Operator | Dec 2024 |
| 38 | E. Conway Butts, Inc. | | Oil & Gas Operator | Apr 1991 |
| 39 | E. M. Self | | Oil Operator | Feb 1981 |
| 40 | E. P. Alexander | | Oil Operator | Jan 1984 |
| 41 | Ellis M. Moore, Et Al | | Oil Operator | Mar 1986 |
| 42 | Energyquest II, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Jun 2025 |
| 43 | Fair Oil, LC | Tyler, TX 75710 | Oil & Gas Operator | Oct 2001 |
| 44 | Fair Oil, LTD. | Tyler, TX 75710 | Oil & Gas Operator | Oct 2025 |
| 45 | Fantasy Oil & Gas Ventures, L.L.C. | | Oil Operator | Dec 2024 |
| 46 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 47 | Forza Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2025 |
| 48 | Four Star Development Corp. | | Oil & Gas Operator | Feb 2013 |
| 49 | Frank Spooner | | Oil & Gas Operator | Mar 1984 |
| 50 | Frontier, Inc. | | Oil Operator | Oct 1998 |
| 51 | Gas Transportation Corporation | | Oil & Gas Operator | Aug 1995 |
| 52 | Geomet Operating Co., Inc. | | Gas Operator | Dec 2013 |
| 53 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 54 | Getty Oil Company & Bodcaw Co. | | Oil & Gas Operator | Oct 1979 |
| 55 | Glen D. Loe | | Oil & Gas Operator | May 1993 |
| 56 | Hanson Natural Resources Co. | | Oil & Gas Operator | Nov 1991 |
| 57 | Harter Oil Company | | Oil & Gas Operator | Apr 2011 |
| 58 | Hawkeye Drilling Co. | Waskom, TX 75692 | Oil & Gas Operator | Feb 2023 |
| 59 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Oct 2025 |
| 60 | Hogan Drilling Company, Inc. | | Oil & Gas Operator | Mar 1981 |
| 61 | Hogan Exploration, Inc. | | Oil & Gas Operator | Mar 2000 |
| 62 | J. B. Stafford | | Oil & Gas Operator | Mar 1981 |
| 63 | J. B. Stafford Et Al | | Oil Operator | Feb 1982 |
| 64 | Jackie D Nelson | | Oil & Gas Operator | Sep 1983 |
| 65 | Jadath | | Oil Operator | May 2001 |
| 66 | James Drilling Co., Inc. | | Oil & Gas Operator | Dec 2024 |
| 67 | John O. Clay Exploration, Inc. | | Oil & Gas Operator | Apr 2005 |
| 68 | John S. Turner,Jr. | | Gas Operator | Jun 1982 |
| 69 | JSB, LLC | | Oil & Gas Operator | Dec 2024 |
| 70 | Justiss Oil Company, Inc. | Jena, LA 71342 | Oil & Gas Operator | Jun 2025 |
| 71 | Justiss-Mears Oil Co. | | Oil & Gas Operator | Feb 1981 |
| 72 | King Drilling Co | Seville, OH 44273 | Oil & Gas Operator | Jan 2025 |
| 73 | Leroy W. James | | Oil & Gas Operator | Oct 1991 |
| 74 | Linn Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2017 |
| 75 | M. W. Maxwell | | Oil & Gas Operator | Apr 1990 |
| 76 | Manorado Oil Company | | Oil Operator | Feb 1999 |
| 77 | McGowan Working Partners | Jackson, MS 39296 | Oil & Gas Operator | Dec 2000 |
| 78 | Mid-South Trading, Inc. | | Oil & Gas Operator | Jan 2025 |
| 79 | Miles Oil & Gas Co. | | Oil & Gas Operator | Feb 1988 |
| 80 | Milton Galoob | | Oil Operator | Dec 1988 |
| 81 | Monroe Well Ser-La Petr Assoc | | Oil Operator | Dec 1988 |
| 82 | Monroe Well Serv-Omega 1985 | | Oil Operator | Dec 1988 |
| 83 | Monroe Well Service | | Oil & Gas Operator | Apr 1998 |
| 84 | Monroe Well Service-Columbus | | Oil Operator | Dec 1988 |
| 85 | Monroe Well Service-Lexington | | Oil Operator | Feb 1989 |
| 86 | Mooringsport Energy Prod Corp | | Oil & Gas Operator | Oct 1994 |
| 87 | Murphrey Oil Co | | Oil Operator | Jan 2025 |
| 88 | Nadel And Gussman Ruston, LLC | | Oil & Gas Operator | Dec 2024 |
| 89 | Nerco Oil & Gas, Inc. | | Oil & Gas Operator | Dec 1996 |
| 90 | O. B. Mobley, Et Al | | Oil Operator | Jul 1989 |
| 91 | Oil Palace, Inc. | | Oil Operator | Jun 2016 |
| 92 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 93 | P. K. Smith | | Oil Operator | Mar 1997 |
| 94 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Oct 2025 |
| 95 | Phoenix Operating Company, Inc. | Shreveport, LA 71161 | Oil & Gas Operator | Mar 2015 |
| 96 | Phoenix Opr Co Inc-DS DRLG | | Oil Operator | May 1994 |
| 97 | Phoenix Opr Co Inc-La Petro As | | Oil Operator | Dec 1992 |
| 98 | Phoenix Opr Co Inc-Lex 83 | | Oil Operator | Feb 1993 |
| 99 | Primary Energy Co. | | Gas Operator | Jul 1999 |
| 100 | Quiet Sun Investments, Inc. | | Oil & Gas Operator | Sep 2012 |