| 1 | Ada Oil Exploration Corp | | Oil & Gas Operator | Jan 1986 |
| 2 | Adam Petroleum Services, Inc. | | Oil Operator | Aug 1989 |
| 3 | Adobe Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Aug 2002 |
| 4 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
| 5 | American Exploration Oper. Co. | | Oil & Gas Operator | May 1990 |
| 6 | American Quasar Petroleum Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2014 |
| 7 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 8 | Aspect Energy, LLC | Denver, CO 80202 | Oil & Gas Operator | Nov 2024 |
| 9 | Aviara Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2002 |
| 10 | Azimuth Energy, LLC | Denver, CO 80203 | Oil & Gas Operator | Sep 2006 |
| 11 | Ballard Exploration Company,Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 12 | Bel Oil Corporation | Jenks, OK 74037 | Oil & Gas Operator | Jun 2005 |
| 13 | Bel Oil Corporation, Etal | | Oil & Gas Operator | May 1987 |
| 14 | Bradco Oil & Gas Company | | Oil & Gas Operator | Dec 1980 |
| 15 | Brammer-Keystone Energy, L.L.C. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2000 |
| 16 | Brechtel Energy Corporation | | Oil & Gas Operator | Sep 2008 |
| 17 | Brooklyn Union Expl. Co., Inc. | | Oil & Gas Operator | Jul 1994 |
| 18 | C6 Operating, L.L.C. | Keatchie, LA 71046 | Oil & Gas Operator | Nov 2024 |
| 19 | Cardinal Oil & Gas, Inc. | | Oil & Gas Operator | Jun 1995 |
| 20 | Carl Oil & Gas Co. | Bakersfield, CA 93309 | Oil & Gas Operator | Dec 1995 |
| 21 | Caroline Hunt Schoellkopf | | Oil & Gas Operator | Aug 1987 |
| 22 | Celeron Oil & Gas Company | | Oil & Gas Operator | Dec 1987 |
| 23 | Century Exploration Houston, LLC | Austin, TX 78702 | Oil & Gas Operator | Jan 2016 |
| 24 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jul 2024 |
| 25 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | Nov 2024 |
| 26 | Columbia Gas Dev. Corp. | | Oil & Gas Operator | Apr 1996 |
| 27 | Coushatta Oil & Gas Inc. | | Oil & Gas Operator | Jan 2007 |
| 28 | Cox Oil & Gas, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2014 |
| 29 | Crimson Explor Operating, Inc. | | Oil & Gas Operator | Dec 2009 |
| 30 | Crystal Oil & Land Company | | Oil & Gas Operator | Apr 2002 |
| 31 | Cxy Energy, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Nov 2000 |
| 32 | Czar Resources Inc | Houston, TX 77060 | Oil & Gas Operator | Oct 1992 |
| 33 | Daniel Oil Company | | Oil & Gas Operator | Jan 1983 |
| 34 | DBL DRLG.&Prod. Services, Inc. | | Oil & Gas Operator | Jul 1997 |
| 35 | Delta Energy Resources, Inc. | | Oil & Gas Operator | Jun 1990 |
| 36 | Dixon Management Corp. | | Oil & Gas Operator | May 1984 |
| 37 | Drew Cornell, Inc.-Agent | | Oil & Gas Operator | Sep 1990 |
| 38 | Dynamic Exploration, Inc. | | Oil & Gas Operator | Oct 2003 |
| 39 | Eagle Oil & Gas Co. | Dallas, TX 75225 | Oil & Gas Operator | Nov 2024 |
| 40 | Edwin L. Cox | | Oil & Gas Operator | May 1986 |
| 41 | El-Oil, LTD. | | Oil & Gas Operator | Jun 2024 |
| 42 | Elysium Energy, L.L.C. | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
| 43 | Elysium Jennings, LLC | | Oil & Gas Operator | Jun 2024 |
| 44 | Endeavor Natural Gas, LP | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 45 | Enerfin Field Services LLC | Houston, TX 77077 | Oil Operator | Jun 2024 |
| 46 | Energy Prod Management Corp | | Oil & Gas Operator | Oct 1991 |
| 47 | Energy Reserves Group | Houston, TX 770563020 | Oil & Gas Operator | Apr 1996 |
| 48 | Ensight IV Energy Management,LLC | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2024 |
| 49 | Ensight Resources, L.L.C. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2001 |
| 50 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 51 | Equinox Oil Company | Plainville, KS 67663 | Oil & Gas Operator | Jul 2024 |
| 52 | Est. Of H. L. Hunt | | Oil & Gas Operator | Jun 1983 |
| 53 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Sep 2024 |
| 54 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Nov 2024 |
| 55 | Flash Gas & Oil Northeast, Inc | | Oil & Gas Operator | May 2007 |
| 56 | Fort Apache Energy, Inc. | Boerne, TX 78015 | Oil & Gas Operator | Nov 2024 |
| 57 | Fortune Resources LLC | Longview, TX 75604 | Oil & Gas Operator | Nov 2024 |
| 58 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Nov 2024 |
| 59 | Four Rivers Exploration, Inc. | | Oil & Gas Operator | Sep 2002 |
| 60 | Frank C. VInson | | Oil & Gas Operator | May 1995 |
| 61 | Franks Petroleum, Inc. Et Al | | Oil & Gas Operator | Oct 1989 |
| 62 | Fred E. Simmons, Jr. | | Oil & Gas Operator | Nov 1981 |
| 63 | Gde Investments La, L.L.C. | | Oil & Gas Operator | Jun 2024 |
| 64 | General Atlantic Energy Corp. | | Oil & Gas Operator | Nov 1988 |
| 65 | Germany Oil Company | Tulsa, OK 74135 | Oil & Gas Operator | Oct 2002 |
| 66 | Germany Operating Company | Houston, TX 77090 | Oil & Gas Operator | Sep 2011 |
| 67 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 68 | Gordy Oil Company | Houston, TX 77007 | Oil & Gas Operator | Nov 2024 |
| 69 | Great Southern Oil &Gas Co Inc | | Oil & Gas Operator | Dec 2004 |
| 70 | Gulf South Operators, Inc. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2015 |
| 71 | Gulf South Pipeline Company, LP | Houston, TX 77046 | Oil & Gas Operator | Dec 2020 |
| 72 | HCW Exploration, Inc. | | Oil & Gas Operator | Jun 1986 |
| 73 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Sep 2024 |
| 74 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Nov 2024 |
| 75 | HS Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2005 |
| 76 | Hughes Eastern Corporation | Ridgeland, MS 39157 | Oil & Gas Operator | Jun 2024 |
| 77 | Hunt Oil Co., Et Al | | Oil & Gas Operator | Nov 1992 |
| 78 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Nov 2024 |
| 79 | Hunt Petroleum (Aec), Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 80 | Ip Petroleum Company, Inc. | Houston, TX 77210 | Oil & Gas Operator | Mar 2008 |
| 81 | Itr Petroleum Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 82 | J. P. Van Way | | Oil & Gas Operator | Jun 2024 |
| 83 | John W. McGowan | | Oil & Gas Operator | Jun 1991 |
| 84 | Johnson Oil & Gas Corporation | | Oil & Gas Operator | Feb 1994 |
| 85 | Jordan Oil Company, Inc. | Lake Charles, LA 70602 | Oil & Gas Operator | Dec 2019 |
| 86 | Julil Energy, LLC | Richmond, TX 77406 | Oil & Gas Operator | Jun 2024 |
| 87 | Jurassic Exploration Co Inc. | | Oil & Gas Operator | Nov 1994 |
| 88 | Kaiser Oil (U.S.) LTD. | | Oil & Gas Operator | Apr 1983 |
| 89 | Kash Oil And Gas, Inc | | Oil & Gas Operator | Oct 2020 |
| 90 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Nov 2024 |
| 91 | Kerr-McGee Oil & Gas Onshr LLC | | Oil & Gas Operator | Dec 2005 |
| 92 | Kerr-McGee Rocky Mountain Corp | Denver, CO 80202 | Oil & Gas Operator | Jan 2007 |
| 93 | Key Operating Co., Inc. | Duncan, OK 73534-1284 | Oil & Gas Operator | Jun 2024 |
| 94 | Kinder Gas Inc | | Oil Operator | Dec 2011 |
| 95 | Knight Exploration, Inc. | | Oil & Gas Operator | Sep 1989 |
| 96 | Koch Gateway Pipeline Company | | Oil & Gas Operator | Feb 2001 |
| 97 | La. Fete Oil & Gas, Inc. | | Oil & Gas Operator | May 1995 |
| 98 | Lagniappe Interests, Inc. | | Oil & Gas Operator | Dec 2003 |
| 99 | Lagniappe Operating, LLC | | Oil Operator | Jun 2024 |
| 100 | Lamar Hunt | | Oil & Gas Operator | Oct 2003 |