| 1 | Addison Oil, LLC | Addison, TX 75001 | Oil & Gas Operator | Mar 2013 |
| 2 | Alcorn Prod Co. | Victoria, TX 77902 | Oil & Gas Operator | Mar 1997 |
| 3 | Alexandria Oil, Inc. | | Oil Operator | Dec 1991 |
| 4 | Anadarko E&P Company LP | Houston, TX 77251 | Oil & Gas Operator | Aug 2014 |
| 5 | Andover Oil Company | | Oil Operator | Sep 1982 |
| 6 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Aug 2017 |
| 7 | Arco O & G Co-Div Atl Rich Co | | Oil & Gas Operator | Feb 1994 |
| 8 | B & K Operating Co., Inc. | | Oil Operator | Mar 2000 |
| 9 | Basic Earth Science Sys, Inc | | Oil Operator | May 1987 |
| 10 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 11 | Big Island Operating Corp. | | Oil & Gas Operator | Aug 1988 |
| 12 | Bill Tarver | | Oil Operator | Nov 2004 |
| 13 | Billingsley Engineering Co. | | Oil & Gas Operator | May 1994 |
| 14 | Blackbrush O & G, LLC | San Antonio, TX 78259 | Oil & Gas Operator | Nov 2024 |
| 15 | BPR Energy, Inc. | | Oil & Gas Operator | Apr 2021 |
| 16 | C. H. C. Gerard | | Oil & Gas Operator | Jul 2024 |
| 17 | Caba, LLC | | Oil Operator | Jul 2024 |
| 18 | Cambridge Energy Corporation | | Oil & Gas Operator | Jul 2003 |
| 19 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jul 2024 |
| 20 | Co-Wil-Co, Incorporated | | Oil Operator | Dec 1990 |
| 21 | Coho Resources Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jul 2002 |
| 22 | Colt Energy Inc | Iola, KS 66749 | Oil & Gas Operator | Jul 2024 |
| 23 | Cornerstone Gas Processing Inc | | Oil Operator | Jan 1999 |
| 24 | Crossroads Energy Development, LLC | | Oil Operator | Mar 2018 |
| 25 | Crosstex Lig, LLC | | Oil Operator | Mar 2014 |
| 26 | Crow-Gulf Coast Venture | | Oil & Gas Operator | Aug 1985 |
| 27 | Crystal Oil & Land Company | | Oil & Gas Operator | Apr 2002 |
| 28 | Cxy Energy, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Nov 2000 |
| 29 | Dalton J. Woods | | Oil & Gas Operator | Dec 1985 |
| 30 | David Crow | | Oil & Gas Operator | Nov 1985 |
| 31 | Delta Petroleum Inc | Houston, TX 77269-1007 | Oil & Gas Operator | May 2009 |
| 32 | Domestic Oil Producers,Inc. | | Oil Operator | Oct 1998 |
| 33 | DRD Operating Company | | Oil & Gas Operator | Feb 2014 |
| 34 | El Paso Field Services Company | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 35 | Enerfin Field Services LLC | Houston, TX 77077 | Oil Operator | Jun 2024 |
| 36 | Enlink Lig, LLC | | Oil Operator | Jul 2024 |
| 37 | Eram, Inc. | | Oil & Gas Operator | Jul 2024 |
| 38 | Evangeline Pumpers, Inc. | | Oil & Gas Operator | Jul 2005 |
| 39 | Fortune Gas & Oil, Inc. | | Oil & Gas Operator | Apr 2004 |
| 40 | Guernsey Petroleum Corporation | Atlanta, GA 30318 | Oil & Gas Operator | Nov 1997 |
| 41 | Gulf Oil Corp. | Denver, CO 80201-0599 | Oil & Gas Operator | Dec 2014 |
| 42 | Halcon Louisiana Operating, LP | | Oil & Gas Operator | Sep 2017 |
| 43 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Nov 2024 |
| 44 | Hogan Energy Corporation | | Oil & Gas Operator | Oct 1999 |
| 45 | Hogan Exploration, Inc. | | Oil & Gas Operator | Mar 2000 |
| 46 | Hunt Petroleum Corporation | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 47 | Indigo II Louisiana Operating LLC | | Oil & Gas Operator | Feb 2015 |
| 48 | Indigo Minerals LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2022 |
| 49 | J D S Oil And Gas | | Oil & Gas Operator | Jul 2024 |
| 50 | J-W Operating Company | Christoval, TX 76935 | Oil & Gas Operator | Nov 2024 |
| 51 | J. P. Van Way | | Oil & Gas Operator | Jun 2024 |
| 52 | Joe Pugh | | Oil Operator | Aug 2001 |
| 53 | John T. Palmer | | Oil & Gas Operator | Jun 1982 |
| 54 | Kelly H. Baxter | Austin, TX 78767 | Oil & Gas Operator | Nov 2006 |
| 55 | Kinsey Interests | | Oil & Gas Operator | May 1991 |
| 56 | La Chalk Gathering System | | Oil Operator | Jan 2006 |
| 57 | La Intrastate Gas Co LLC | | Oil Operator | Apr 2004 |
| 58 | Lamar Oil & Gas, Inc. | Rockport, TX 78381 | Oil & Gas Operator | Nov 2024 |
| 59 | Leo Vesenmeir, Jr. | | Oil & Gas Operator | Jul 1987 |
| 60 | Louisiana Fuel Oil Corporation | | Oil Operator | Aug 1997 |
| 61 | Louisiana Intrastate Gas Corp. | | Oil Operator | Feb 1994 |
| 62 | Mark F Preddy & Associates,Inc | | Oil & Gas Operator | Dec 1987 |
| 63 | Marquee Corporation | Houston, TX 77024 | Oil & Gas Operator | Nov 2024 |
| 64 | McGoldrick & Watson | | Oil & Gas Operator | Jul 1987 |
| 65 | McGoldrick & Watson, Et Al | | Oil Operator | Jul 1987 |
| 66 | McGoldrick Oil Company | Shreveport, LA 71129 | Oil & Gas Operator | Jul 2020 |
| 67 | McGowan Working Partners | Jackson, MS 39296 | Oil & Gas Operator | Dec 2000 |
| 68 | McGowan Working Partners, Inc. | Jackson, MS 39296 | Oil & Gas Operator | Nov 2024 |
| 69 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Nov 2024 |
| 70 | Moore McCormack Energy, Inc. | | Oil & Gas Operator | Jul 1988 |
| 71 | Munoco Co. | El Dorado, AR 71730 | Oil & Gas Operator | Jul 2021 |
| 72 | Neosho Operating La, LLC | | Oil Operator | Oct 2016 |
| 73 | Neumin Production Company | Point Comfort, TX 77978 | Oil & Gas Operator | Nov 2024 |
| 74 | Newhaven Operating Inc | | Oil & Gas Operator | Dec 1998 |
| 75 | Onyxx Energy LLC | | Oil & Gas Operator | Mar 2017 |
| 76 | Opmi Operating Company | Houston, TX 77057 | Oil & Gas Operator | Jun 2008 |
| 77 | Optimistic Oil Co. | | Oil & Gas Operator | Dec 1991 |
| 78 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Nov 2024 |
| 79 | Par Oil Corporation | | Oil & Gas Operator | Sep 1990 |
| 80 | Pennzoil E & P & M H Marr | | Oil & Gas Operator | Sep 1993 |
| 81 | Perdido Energy Louisiana, LLC | | Oil & Gas Operator | Jun 2024 |
| 82 | Petro-Guard Company, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2014 |
| 83 | Petroleum Exchange | | Oil & Gas Operator | Oct 1997 |
| 84 | Pilot Resources, Inc. | | Oil & Gas Operator | May 2013 |
| 85 | Pioneer Exploration Company | Houston, TX 77090 | Oil & Gas Operator | Aug 2024 |
| 86 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Sep 2024 |
| 87 | Planet Resource Operating, LLC | | Oil & Gas Operator | Jun 2024 |
| 88 | Presidio Oil & Gas, Inc. | | Oil & Gas Operator | Jun 2024 |
| 89 | Prime Rock Resources La LLC | | Oil & Gas Operator | Jun 2024 |
| 90 | Prudential Oil & Gas, Inc. | | Oil & Gas Operator | Jul 1987 |
| 91 | Rabb Contracting Company, L.L.C. | | Oil Operator | Jun 2024 |
| 92 | Recon Operating, Inc. | | Oil & Gas Operator | Jun 1991 |
| 93 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |
| 94 | Ross Production Co. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2000 |
| 95 | Ruskin H Meyer Et Al | | Oil Operator | Sep 1987 |
| 96 | Sam Aertker | | Oil Operator | Jul 1992 |
| 97 | Sam Spears, Jr. | | Oil & Gas Operator | Sep 1998 |
| 98 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 99 | Santa Fe-Andover Oil Co | Tulsa, OK 74172 | Oil & Gas Operator | Sep 2000 |
| 100 | Sante Fe Minerals | | Oil & Gas Operator | Dec 1987 |