| 13201 | Holwell Drilling Company | | Oil Operator | Sep 1992 |
| 13202 | Hombre Oil Co., LTD. | Tyler, TX 75713 | Oil & Gas Operator | Apr 2021 |
| 13203 | Home Gas & Oil Co Inc | Indiana, PA 15701-1532 | Oil & Gas Operator | Dec 2025 |
| 13204 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | May 2026 |
| 13205 | Home-Stake Oil & Gas Company | Plano, TX 75093 | Oil & Gas Operator | Dec 2025 |
| 13206 | Home-Stake Royalty Corp., The | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2014 |
| 13207 | Homeland Energy GP | Campbellsville, KY 42719 | Oil & Gas Operator | Dec 2021 |
| 13208 | Homeland Energy Ventures LLC | Pittsburgh, PA 15241-1633 | Oil & Gas Operator | Dec 2008 |
| 13209 | Homeland Gas & Oil, Inc | Roosevelt, UT 84066-1574 | Oil & Gas Operator | Mar 2026 |
| 13210 | Homeplace Oil And Gas | Caldwell, TX 77836 | Oil & Gas Operator | Feb 2021 |
| 13211 | Homer D. Oliver | | Gas Operator | Sep 1998 |
| 13212 | Homer E. Hines, Inc. | | Oil Operator | Sep 1978 |
| 13213 | Homer Oil Co LLC | Holdenville, OK 74848-3232 | Oil Operator | Sep 2025 |
| 13214 | Homestead Oil Inc | | Oil & Gas Operator | Jun 2014 |
| 13215 | Hominy Consulting, LLC | Canadian, TX 79014 | Oil & Gas Operator | May 2026 |
| 13216 | Hon R J Oil & Ga | | Oil Operator | Nov 1990 |
| 13217 | Hondo Drilling Company | Midland, TX 79702 | Oil & Gas Operator | Nov 1996 |
| 13218 | Hondo Oil & Gas | Houston, TX 77042 | Oil & Gas Operator | Oct 1995 |
| 13219 | Hondo Oil & Gas Company | Roswell, NM 88202 | Oil & Gas Operator | Aug 2006 |
| 13220 | Hondo Operating, Inc. | | Oil & Gas Operator | Aug 1997 |
| 13221 | Honeck Oil Company | Austin, TX 78716 | Oil & Gas Operator | Mar 2008 |
| 13222 | Honeck Oil Company, LP | Austin, TX 78716 | Oil & Gas Operator | Dec 2010 |
| 13223 | Honey Oil Co | Wichita, KS 67226 | Oil & Gas Operator | Mar 2009 |
| 13224 | Honey Well, LLC | Lenexa, KS 66219 | Oil Operator | Dec 2025 |
| 13225 | Honeymon Drilling Company LTD | Oklahoma City, OK 73147 | Oil & Gas Operator | Feb 1995 |
| 13226 | Hood, J. F. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2010 |
| 13227 | Hood, J. Frank, Jr. | Arlington, TX 76006 | Oil & Gas Operator | May 2026 |
| 13228 | Hood, Joe B. | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2008 |
| 13229 | Hooker Phil Oil Operator | | Oil Operator | Aug 1996 |
| 13230 | Hooks & Hooks | Abilene, TX 79608 | Oil & Gas Operator | Feb 1999 |
| 13231 | Hooks Dwain | Tatums, OK 73487 | Oil & Gas Operator | Nov 2025 |
| 13232 | Hooper & Sons Investments Co.Inc | Tenaha, TX 75974 | Gas Operator | Nov 1997 |
| 13233 | Hooper, DR. Oil & Royalty Co. | Conroe, TX 77304 | Oil & Gas Operator | Sep 1999 |
| 13234 | Hootkins, Seymour G. | Archer City, TX 76351 | Oil & Gas Operator | Apr 1997 |
| 13235 | Hootkins-Smith,La LTD. | | Gas Operator | Jun 1985 |
| 13236 | Hoover & Wilson Exp & Prod Inc | Fort Smith, AR 72913-5171 | Gas Operator | Jul 2013 |
| 13237 | Hoover Frank W Dba Cherokee Drilling | Miramar Beach, FL 32550 | Oil & Gas Operator | Dec 2024 |
| 13238 | Hoover Gregory M | Wattsburg, PA 16442-2209 | Gas Operator | Dec 2025 |
| 13239 | Hoover Noble C | | Oil Operator | Nov 1992 |
| 13240 | Hoover Petroleum Company, LLC | Midland, TX 79701 | Oil Operator | May 2026 |
| 13241 | Hoover Producing & Operating | Newark, OH 43055 | Oil & Gas Operator | Dec 2001 |
| 13242 | Hopco Operating, Inc. | Stafford, TX 77497 | Oil & Gas Operator | Dec 2016 |
| 13243 | Hopco Resources Inc | Columbus, OH 43065 | Oil & Gas Operator | Dec 2024 |
| 13244 | Hope Company, LLC | Longmont, CO 80502 | Gas Operator | Feb 2012 |
| 13245 | Hope Energy, L.L.C. | Snyder, TX 79549 | Oil & Gas Operator | May 2026 |
| 13246 | Hope Gas, Inc. | Richmond, VA 23261 | Oil & Gas Operator | Dec 2010 |
| 13247 | Hope Oil Corporation | | Oil Operator | Jan 2026 |
| 13248 | Hope Oil Inc | Midland, TX 79702 | Oil & Gas Operator | Oct 2021 |
| 13249 | Hope Production, Inc. | Edinburg, TX 78540 | Oil & Gas Operator | Jan 2000 |
| 13250 | Hope'S Windows, Inc. | Jamestown, NY 14702 | Gas Operator | Dec 2024 |
| 13251 | Hopewell Oil & Gas Development Company | Columbus, OH 43228 | Oil & Gas Operator | Dec 2019 |
| 13252 | Hopewell Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | May 2026 |
| 13253 | Hopkins Engineering, Inc. | Houston, TX 77046 | Oil & Gas Operator | Sep 1996 |
| 13254 | Hopkins, T. M. Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | May 2026 |
| 13255 | Hoppe Oil & Gas | | Oil Operator | Nov 1992 |
| 13256 | Hoppe Oil & Gas Co., Inc. | Wichita, KS 67202 | Oil Operator | Jul 1998 |
| 13257 | Hopper Oil Co., Inc. | Winfield, KS 67156 | Oil Operator | Dec 2025 |
| 13258 | Hopper Oil Compa | | Oil Operator | Sep 1988 |
| 13259 | Hopper, Harlan | Midland, TX 79702 | Oil & Gas Operator | May 2026 |
| 13260 | Hopper, Thornton Co. | Midland, TX 79702 | Oil & Gas Operator | May 2026 |
| 13261 | Hoppes Helen E | Depew, OK 74028-3428 | Oil & Gas Operator | Apr 2015 |
| 13262 | Horadam, Henry L. | Victoria, TX 77905 | Oil & Gas Operator | Oct 2008 |
| 13263 | Horan, Ken L. | Cross Plains, TX 76443 | Gas Operator | May 2002 |
| 13264 | Horansky Burrell Revocable Trust | Wichita Falls, TX 76309 | Oil Operator | May 2026 |
| 13265 | Horany, Ray & Ernest | Olney, TX 76374 | Oil & Gas Operator | May 2002 |
| 13266 | Horizon Barnsdall Energy Part LTD I Osage Only | | Oil Operator | Feb 2012 |
| 13267 | Horizon Energy | Vergas, MN 56587 | Oil & Gas Operator | Sep 2025 |
| 13268 | Horizon Energy Corporation | Sand Fork, WV 26430 | Oil & Gas Operator | Dec 2021 |
| 13269 | Horizon Expl. & Dev. Co., Inc. | | Oil & Gas Operator | Jun 1995 |
| 13270 | Horizon Exploration Company | Houston, TX 77019 | Oil & Gas Operator | Aug 2002 |
| 13271 | Horizon Exploration Services | El Paso, TX 79922 | Oil Operator | May 2026 |
| 13272 | Horizon Natural Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2024 |
| 13273 | Horizon Natural Gas, LLC | | Oil & Gas Operator | Dec 2018 |
| 13274 | Horizon Natural Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2019 |
| 13275 | Horizon Oil & Ga | | Oil & Gas Operator | Jan 1992 |
| 13276 | Horizon Oil & Gas Co. | Dallas, TX 75221 | Oil & Gas Operator | Jan 2005 |
| 13277 | Horizon Operating Co. | | Oil & Gas Operator | Dec 1995 |
| 13278 | Horizon Prod. And Operating, LLC | Houston, TX 77019 | Oil & Gas Operator | May 2026 |
| 13279 | Horizon Resources Inc | Fort Worth, TX 76101-1978 | Oil & Gas Operator | Jul 2006 |
| 13280 | Horizon Ridge Oil Company | Austin, TX 78738 | Oil Operator | May 2026 |
| 13281 | Horizon Well Services, Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 2026 |
| 13282 | Horizontal Development & Production Inc | Lubbock, TX 79493 | Oil & Gas Operator | Jul 2002 |
| 13283 | Horn Eddie L Dba B & E Investments | Bristow, OK 74010 | Oil & Gas Operator | Dec 2025 |
| 13284 | Horn Energy | Eastland, TX 76448 | Oil & Gas Operator | May 2026 |
| 13285 | Horn Oil Company | Bristow, OK 74010 | Oil & Gas Operator | Jan 2026 |
| 13286 | Horn R L & Sons Drilling | | Oil Operator | Jun 1997 |
| 13287 | Horn, Henry L | | Oil Operator | Apr 2009 |
| 13288 | Horn, W. J. | Graham, TX 76450 | Oil & Gas Operator | Oct 2004 |
| 13289 | Horne & Moore Oil Co. | Holliday, TX 76366 | Oil & Gas Operator | Feb 2001 |
| 13290 | Horner Oil And Gas Production, Inc. | Cameron, WV 26033 | Oil & Gas Operator | Dec 2021 |
| 13291 | Horning, Jeremiah | Penn Yan, NY 14527 | Gas Operator | Dec 2024 |
| 13292 | Horseshoe Oil Co | Cromwell, OK 74837 | Oil & Gas Operator | Dec 2021 |
| 13293 | Horseshoe Operating Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 2023 |
| 13294 | Horseshoe Production, LLC | Bryson, TX 76427 | Oil & Gas Operator | May 2026 |
| 13295 | Horst Energy LLC | Fort Worth, TX 76124 | Oil & Gas Operator | Jun 2019 |
| 13296 | Horst Oil, LLC | Pittsburg, MO 65724 | Oil Operator | Dec 2009 |
| 13297 | Hortin & Huffman Pet Geol | Worthington, OH 43085 | Oil & Gas Operator | Dec 2000 |
| 13298 | Horton & Freeman | | Oil Operator | Apr 1983 |
| 13299 | Horton Mary | Ratliff City, OK 73481 | Oil Operator | May 2020 |
| 13300 | Horton Oil Company | Independence, KS 67301 | Oil & Gas Operator | Jul 2000 |