| 5001 | Holley Operating, L. L. C. | Abilene, TX 79601 | Oil Operator | May 2024 |
| 5002 | Holli-Tex Supply Co. | Holliday, TX 76366 | Oil & Gas Operator | May 2018 |
| 5003 | Holliday CSG Corp. | Holliday, TX 76366 | Oil & Gas Operator | May 2024 |
| 5004 | Holliday Drilling, Inc. | Stephenville, TX 76401 | Oil & Gas Operator | Dec 2020 |
| 5005 | Hollimon Oil Corporation | Castroville, TX 78009 | Oil & Gas Operator | Nov 2016 |
| 5006 | Holloway Oil Company | Austin, TX 78764 | Oil & Gas Operator | Feb 2004 |
| 5007 | Hollub Production Company | Seguin, TX 78156 | Oil & Gas Operator | Jul 2000 |
| 5008 | Hollub, Lambert Drilling Company | Seguin, TX 78155 | Oil & Gas Operator | May 2024 |
| 5009 | Holly Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2008 |
| 5010 | Holmac Oil Company | Hobbs, NM 88240 | Oil & Gas Operator | May 1996 |
| 5011 | Holmes Exploration, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2015 |
| 5012 | Holson Well Service | Albany, TX 76430 | Oil & Gas Operator | May 2024 |
| 5013 | Holt Oil And Cattle LLC | Trout Run, PA 17771 | Oil & Gas Operator | May 2024 |
| 5014 | Hombre Oil Co., LTD. | Tyler, TX 75713 | Oil & Gas Operator | Apr 2021 |
| 5015 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | May 2024 |
| 5016 | Home-Stake Oil & Gas Company | Plano, TX 75093 | Oil & Gas Operator | Dec 2023 |
| 5017 | Home-Stake Royalty Corp., The | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2014 |
| 5018 | Homeplace Oil And Gas | Caldwell, TX 77836 | Oil & Gas Operator | Feb 2021 |
| 5019 | Hondo Drilling Company | Midland, TX 79702 | Oil & Gas Operator | Nov 1996 |
| 5020 | Honeck Oil Company | Austin, TX 78716 | Oil & Gas Operator | Mar 2008 |
| 5021 | Honeck Oil Company, LP | Austin, TX 78716 | Oil & Gas Operator | Dec 2010 |
| 5022 | Hood, J. F. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2010 |
| 5023 | Hood, J. Frank, Jr. | Arlington, TX 76006 | Oil & Gas Operator | May 2024 |
| 5024 | Hood, Joe B. | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2008 |
| 5025 | Hooks & Hooks | Abilene, TX 79608 | Oil & Gas Operator | Feb 1999 |
| 5026 | Hooper, DR. Oil & Royalty Co. | Conroe, TX 77304 | Oil & Gas Operator | Sep 1999 |
| 5027 | Hootkins, Seymour G. | Archer City, TX 76351 | Oil & Gas Operator | Apr 1997 |
| 5028 | Hoover Petroleum Company, LLC | Midland, TX 79701 | Oil Operator | May 2024 |
| 5029 | Hopco Operating, Inc. | Stafford, TX 77497 | Oil & Gas Operator | Dec 2016 |
| 5030 | Hope Energy, L.L.C. | Snyder, TX 79549 | Oil & Gas Operator | May 2024 |
| 5031 | Hope Production, Inc. | Edinburg, TX 78540 | Oil & Gas Operator | Jan 2000 |
| 5032 | Hopewell Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | May 2024 |
| 5033 | Hopkins Engineering, Inc. | Houston, TX 77046 | Oil & Gas Operator | Sep 1996 |
| 5034 | Hopkins, T. M. Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 5035 | Hopper, Harlan | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 5036 | Hopper, Thornton Co. | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 5037 | Horadam, Henry L. | Victoria, TX 77905 | Oil & Gas Operator | Oct 2008 |
| 5038 | Horansky Burrell Revocable Trust | Wichita Falls, TX 76308 | Oil Operator | May 2024 |
| 5039 | Horany, Ray & Ernest | Olney, TX 76374 | Oil & Gas Operator | May 2002 |
| 5040 | Horizon Energy | Vergas, MN 56587 | Oil & Gas Operator | May 2024 |
| 5041 | Horizon Exploration Company | Houston, TX 77019 | Oil & Gas Operator | Aug 2002 |
| 5042 | Horizon Exploration Services | El Paso, TX 79922 | Oil Operator | May 2024 |
| 5043 | Horizon Natural Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Jan 2024 |
| 5044 | Horizon Natural Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2019 |
| 5045 | Horizon Oil & Gas Co. | Dallas, TX 75221 | Oil & Gas Operator | Jan 2005 |
| 5046 | Horizon Prod. And Operating, LLC | Houston, TX 77019 | Oil & Gas Operator | May 2024 |
| 5047 | Horizon Ridge Oil Company | Austin, TX 78738 | Oil Operator | May 2024 |
| 5048 | Horizon Well Services, Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 2024 |
| 5049 | Horn Energy | Eastland, TX 76448 | Oil & Gas Operator | May 2024 |
| 5050 | Horn, W. J. | Graham, TX 76450 | Oil & Gas Operator | Oct 2004 |
| 5051 | Horne & Moore Oil Co. | Holliday, TX 76366 | Oil & Gas Operator | Feb 2001 |
| 5052 | Horseshoe Production, LLC | Bryson, TX 76427 | Oil Operator | May 2024 |
| 5053 | Horst Energy LLC | Fort Worth, TX 76124 | Oil & Gas Operator | Jun 2019 |
| 5054 | Hosford Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 1994 |
| 5055 | Hou-Tex, Inc. | Houston, TX 77224 | Oil & Gas Operator | Jun 2001 |
| 5056 | Houchin, O. E. Inc. | Olney, IL 62450 | Oil & Gas Operator | Feb 1997 |
| 5057 | Houghton Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2009 |
| 5058 | Houston Energy Operating, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jul 2020 |
| 5059 | Houston Energy, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
| 5060 | Houston Gulf Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | May 2024 |
| 5061 | Houston Hydrocarbons, Inc. (A) | Houston, TX 77042 | Oil & Gas Operator | Sep 2004 |
| 5062 | Houston Oil & Gas Company, Inc. | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
| 5063 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 5064 | Houston Oil Prod Enterprises,Inc | Houston, TX 77006 | Oil & Gas Operator | May 2024 |
| 5065 | Houston Operating, Inc. | Houston, TX 77027 | Oil & Gas Operator | May 2024 |
| 5066 | Houston Petroleum Company | Houston, TX 77027 | Oil & Gas Operator | May 2024 |
| 5067 | Houston Resources Corp. | Houston, TX 77002 | Oil & Gas Operator | Apr 2003 |
| 5068 | Houtchens, D. D. | Gainesville, TX 76240 | Oil & Gas Operator | May 2024 |
| 5069 | Houtchens, DD & Anna D LVNG TRST | Garland, TX 75043 | Oil Operator | May 2024 |
| 5070 | Hovgard & Fitzgerald | Abilene, TX 79608 | Oil & Gas Operator | Mar 1996 |
| 5071 | Howard Exploration, Inc. | Houston, TX 77069 | Oil & Gas Operator | May 2024 |
| 5072 | Howard Operating Co. | Nocona, TX 76255 | Oil & Gas Operator | May 2024 |
| 5073 | Howard, Anthony E. F. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2001 |
| 5074 | Howard, Douglas J. | Houston, TX 77070 | Oil & Gas Operator | Mar 2008 |
| 5075 | Howell & Sandlin, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2001 |
| 5076 | Howell Crane & Rigging, Inc. | San Antonio, TX 78220 | Oil Operator | May 2024 |
| 5077 | Howell Drilling, Inc. | San Antonio, TX 78230 | Oil & Gas Operator | Aug 2003 |
| 5078 | Howell Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Oct 2019 |
| 5079 | Howell Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 2015 |
| 5080 | Howell, VIrginia C. Estate Of | Breckenridge, TX 76424 | Gas Operator | May 2024 |
| 5081 | Howitzer Operating, LLC | Farmers BRNCH, TX 75234 | Oil Operator | May 2024 |
| 5082 | Howle Operating Account, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 1999 |
| 5083 | Howle, A.G. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2011 |
| 5084 | HPC Energy LLC | Midland, TX 79703 | Oil & Gas Operator | Aug 2013 |
| 5085 | HPC Operating, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Mar 2008 |
| 5086 | HPPC, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2023 |
| 5087 | HR Petroleum | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Apr 1998 |
| 5088 | HRB Oil | Houston, TX 77042 | Oil & Gas Operator | Oct 1998 |
| 5089 | HRB Operating Company Inc | Bridgeport, TX 76426 | Oil & Gas Operator | May 2024 |
| 5090 | Hrbacek Oil Corp. | La Grange, TX 78945 | Oil & Gas Operator | Feb 2004 |
| 5091 | HRF Exploration & Production LLC | Gaylord, MI 49734-0160 | Gas Operator | May 2024 |
| 5092 | HRF Exploration & Production,Inc | Denver, CO 80237 | Oil & Gas Operator | Mar 2009 |
| 5093 | HRH Energy Group Incorporated | Carrollton, TX 75006 | Oil & Gas Operator | Nov 2009 |
| 5094 | Hronek, Kenneth | Caldwell, TX 77836 | Oil & Gas Operator | May 2024 |
| 5095 | Hrubetz Oil Co. | Dallas, TX 75225 | Oil Operator | Sep 1986 |
| 5096 | Hrubetz Operating Company | Dallas, TX 75225 | Oil & Gas Operator | Feb 1999 |
| 5097 | HS Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2005 |
| 5098 | Hub-Cap Oil Company | Arlington, TX 76016 | Oil & Gas Operator | Dec 2013 |
| 5099 | Hubbard Operating | Ozona, TX 76943 | Gas Operator | May 2024 |
| 5100 | Hubcap Oil, LLC | Arlington, TX 76016 | Oil Operator | May 2024 |