| 1201 | Hogan Exploration, Inc. | | Oil & Gas Operator | Mar 2000 |
| 1202 | Hogan, Wayne Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Jun 2006 |
| 1203 | Hogback Exploration Inc | Fort Smith, AR 72916 | Oil & Gas Operator | Feb 2025 |
| 1204 | Hoge Oil & Gas Expl Inc | Edmond, OK 73013-3709 | Oil & Gas Operator | Sep 2023 |
| 1205 | Hoggard, Kenneth | Loving, TX 76460 | Oil & Gas Operator | Jun 2025 |
| 1206 | Hogoboom Al Oilf | | Oil Operator | Oct 1990 |
| 1207 | Hoke Jr J T | Edmond, OK 73034 | Oil Operator | Nov 1998 |
| 1208 | Holbein & Wright Resources Inc. | Bandera, TX 78003 | Oil & Gas Operator | Jun 2025 |
| 1209 | Holbrook LLC | Bimble, KY 40915 | Oil & Gas Operator | Mar 2025 |
| 1210 | Holco Oil & Gas | Borger, TX 79008 | Oil & Gas Operator | Jun 2025 |
| 1211 | Holcomb Company, The | Freer, TX 78357 | Oil & Gas Operator | Aug 1996 |
| 1212 | Holcomb Enterprises | Clyde, TX 79510 | Oil & Gas Operator | Aug 2003 |
| 1213 | Holcomb Oil & Gas Inc | Farmington, NM 87401 | Oil & Gas Operator | Mar 2025 |
| 1214 | Holcomb Oil Comp | | Oil Operator | Sep 1991 |
| 1215 | Holden Energy Corporation | Ardmore, OK 73401 | Oil & Gas Operator | Mar 2015 |
| 1216 | Holden Harold B | Billings, MT 59103 | Oil Operator | Jun 1996 |
| 1217 | Holden Oil & Gas | Abilene, TX 79608 | Oil & Gas Operator | Dec 2024 |
| 1218 | Holifield Oil Company | Giddings, TX 78942 | Oil & Gas Operator | Mar 2009 |
| 1219 | Holke Dave Consulting Inc | Meridian, ID 83646-4812 | Oil & Gas Operator | Feb 2025 |
| 1220 | Holl Investment Co | Logan, OH 43138 | Oil & Gas Operator | Dec 2019 |
| 1221 | Holland Assoc | | Oil Operator | Sep 1987 |
| 1222 | Holland Oil & Gas | Brookesmith, TX 76827 | Oil & Gas Operator | Dec 2010 |
| 1223 | Holland Oil Co. | Petrolia, TX 76377 | Oil Operator | Aug 2010 |
| 1224 | Holland Production Co | | Oil Operator | Aug 1982 |
| 1225 | Holland, W. M. | Petrolia, TX 76377 | Oil & Gas Operator | Jul 2009 |
| 1226 | Hollandsworth & Travis | Longview, TX 75606 | Oil & Gas Operator | Mar 2001 |
| 1227 | Hollandsworth & Travis Oil | Longview, TX 75606 | Oil Operator | May 2003 |
| 1228 | Holleman & Parks Oil & Gas Inc | | Oil & Gas Operator | May 1995 |
| 1229 | Hollenbeck, Lloyd D. | Andover, NY 14806 | Oil & Gas Operator | Dec 2023 |
| 1230 | Hollenshead Oil Co. | | Oil & Gas Operator | Mar 1992 |
| 1231 | Holler Oil Co. | San Angelo, TX 76906 | Oil & Gas Operator | Aug 2003 |
| 1232 | Holley Oil Company, LLC | Chappell Hill, TX 77426 | Oil & Gas Operator | Jun 2025 |
| 1233 | Holley Operating, L. L. C. | Abilene, TX 79601 | Oil Operator | Jun 2025 |
| 1234 | Holli-Tex Supply Co. | Holliday, TX 76366 | Oil & Gas Operator | May 2018 |
| 1235 | Holliday CSG Corp. | Holliday, TX 76366 | Oil & Gas Operator | Jun 2025 |
| 1236 | Holliday Drilling, Inc. | Stephenville, TX 76401 | Oil & Gas Operator | Dec 2020 |
| 1237 | Holliday Exploration Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2005 |
| 1238 | Hollimon Oil Corporation | Castroville, TX 78009 | Oil & Gas Operator | Nov 2016 |
| 1239 | Hollingsworth & Assoc | | Oil Operator | Feb 1987 |
| 1240 | Hollis & Kathryn Nichols | Shinglehouse, PA 16748-2112 | Gas Operator | Dec 2015 |
| 1241 | Hollobaugh Paul A | Mayport, PA 16240-1710 | Gas Operator | Dec 2024 |
| 1242 | Holloway David A | Okmulgee, OK 74447-9191 | Oil & Gas Operator | Feb 2025 |
| 1243 | Holloway Oil Company | Austin, TX 78764 | Oil & Gas Operator | Feb 2004 |
| 1244 | Hollrah Exploration Company | Edmond, OK 73012 | Oil & Gas Operator | Feb 2025 |
| 1245 | Hollub Production Company | Seguin, TX 78156 | Oil & Gas Operator | Jul 2000 |
| 1246 | Hollub, Lambert Drilling Company | Seguin, TX 78155 | Oil & Gas Operator | Jun 2025 |
| 1247 | Holly Energy Inc | | Oil Operator | Apr 1983 |
| 1248 | Holly Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2008 |
| 1249 | Holmac Oil Company | Hobbs, NM 88240 | Oil & Gas Operator | May 1996 |
| 1250 | Holman Kendall | Paden, OK 74860-7116 | Oil & Gas Operator | Jan 2025 |
| 1251 | Holman Ray | Okemah, OK 74859-0029 | Gas Operator | May 2024 |
| 1252 | Holman Robert W | Prague, OK 74864-9230 | Oil & Gas Operator | Jan 2019 |
| 1253 | Holmes Exploration, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2015 |
| 1254 | Holmes Mary Ellen | Bristow, OK 74010 | Oil Operator | Mar 2015 |
| 1255 | Holmes Western Oil Corporation | | Oil & Gas Operator | Apr 2025 |
| 1256 | Holson Well Service | Albany, TX 76430 | Oil & Gas Operator | Jun 2025 |
| 1257 | Holston-GR. Sou. Oil & Gas Co. | | Oil & Gas Operator | Mar 1981 |
| 1258 | Holt Andrew L "Mickey" | Pawhuska, OK 74056 | Oil & Gas Operator | Aug 2008 |
| 1259 | Holt Brothers | Gruver, TX 79040 | Gas Operator | Jun 2025 |
| 1260 | Holt IVan | | Oil Operator | Mar 1989 |
| 1261 | Holt IVan Leroy | | Oil & Gas Operator | Jan 1994 |
| 1262 | Holt James | Skiatook, OK 74070-0006 | Oil & Gas Operator | Feb 2020 |
| 1263 | Holt Jean | Claremore, OK 74017-9439 | Oil Operator | Mar 2015 |
| 1264 | Holt Oil & Gas C | | Oil Operator | Sep 1984 |
| 1265 | Holt Oil & Gas Corp | Dallas, TX 75231 | Oil & Gas Operator | Apr 1995 |
| 1266 | Holt Oil And Cattle LLC | Bedias, TX 77831 | Oil & Gas Operator | Jun 2025 |
| 1267 | Holt, Carol | Independence, KS 67301 | Oil Operator | Feb 2025 |
| 1268 | Holt, Roger | Cherryvale, KS 67335 | Gas Operator | Mar 2003 |
| 1269 | Holtom, Bill, A General Partnership | Saint Paul, KS 66771 | Oil Operator | Jun 2024 |
| 1270 | Holton Brothers | Canton, KS 67428 | Oil Operator | Apr 1990 |
| 1271 | Holwell Drilling Company | | Oil Operator | Sep 1992 |
| 1272 | Hombre Oil Co., LTD. | Tyler, TX 75713 | Oil & Gas Operator | Apr 2021 |
| 1273 | Home Gas & Oil Co Inc | Indiana, PA 15701-1532 | Oil & Gas Operator | Dec 2024 |
| 1274 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Jun 2025 |
| 1275 | Home-Stake Oil & Gas Company | Plano, TX 75093 | Oil & Gas Operator | Feb 2025 |
| 1276 | Home-Stake Royalty Corp., The | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2014 |
| 1277 | Homeland Energy GP | Campbellsville, KY 42719 | Oil & Gas Operator | Dec 2021 |
| 1278 | Homeland Energy Ventures LLC | Pittsburgh, PA 15241-1633 | Oil & Gas Operator | Dec 2008 |
| 1279 | Homeland Gas & Oil, Inc | Roosevelt, UT 84066-1574 | Oil & Gas Operator | Mar 2025 |
| 1280 | Homeplace Oil And Gas | Caldwell, TX 77836 | Oil & Gas Operator | Feb 2021 |
| 1281 | Homer D. Oliver | | Gas Operator | Sep 1998 |
| 1282 | Homer E. Hines, Inc. | | Oil Operator | Sep 1978 |
| 1283 | Homer Oil Co LLC | Holdenville, OK 74848-3232 | Oil Operator | Mar 2025 |
| 1284 | Homestead Oil Inc | | Oil & Gas Operator | Jan 2018 |
| 1285 | Hominy Consulting, LLC | Canadian, TX 79014 | Oil & Gas Operator | Jun 2025 |
| 1286 | Hon R J Oil & Ga | | Oil Operator | Nov 1990 |
| 1287 | Hondo Drilling Company | Midland, TX 79702 | Oil & Gas Operator | Nov 1996 |
| 1288 | Hondo Oil & Gas | Houston, TX 77042 | Oil & Gas Operator | Oct 1995 |
| 1289 | Hondo Oil & Gas Company | Roswell, NM 88202 | Oil & Gas Operator | Aug 2006 |
| 1290 | Hondo Operating, Inc. | | Oil & Gas Operator | Aug 1997 |
| 1291 | Honeck Oil Company | Austin, TX 78716 | Oil & Gas Operator | Mar 2008 |
| 1292 | Honeck Oil Company, LP | Austin, TX 78716 | Oil & Gas Operator | Dec 2010 |
| 1293 | Honey Oil Co | Wichita, KS 67226 | Oil & Gas Operator | Mar 2009 |
| 1294 | Honey Well, LLC | Lenexa, KS 66219 | Oil Operator | Jan 2025 |
| 1295 | Honeymon Drilling Company LTD | Oklahoma City, OK 73147 | Oil & Gas Operator | Feb 1995 |
| 1296 | Hood, J. F. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2010 |
| 1297 | Hood, J. Frank, Jr. | Arlington, TX 76006 | Oil & Gas Operator | Jun 2025 |
| 1298 | Hood, Joe B. | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2008 |
| 1299 | Hooker Phil Oil Operator | | Oil Operator | Aug 1996 |
| 1300 | Hooks & Hooks | Abilene, TX 79608 | Oil & Gas Operator | Feb 1999 |