| 13301 | Hillside Oil & Gas, LLC | Midland, TX 79708 | Oil & Gas Operator | Apr 2016 |
| 13302 | Hillside Oil Inc | Aurora, ON L4G | Oil Operator | Dec 2021 |
| 13303 | Hillside Oil Partners | | Oil & Gas Operator | Dec 1999 |
| 13304 | Hillside Resources | Bartlesville, OK 74005 | Oil & Gas Operator | Jan 2007 |
| 13305 | Hilltex Operating Company, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jul 2021 |
| 13306 | Hilltop Development Corp | Frazeysburg, OH 43822 | Oil & Gas Operator | Dec 1984 |
| 13307 | Hilltop Disposal LLC | Elk City, OK 73644-2400 | Oil Operator | Jun 2021 |
| 13308 | Hilltop Exploration, Inc. | Sedan, KS 67361 | Oil Operator | Jan 2000 |
| 13309 | Hilltop Petroleum LLC | Weatherford, TX 76086 | Oil & Gas Operator | Jun 2025 |
| 13310 | Hilltopper Energy, LLC | Hopkinsville, KY 42240 | Oil & Gas Operator | Dec 2023 |
| 13311 | Hillwood Energy Texas, L.P. | Fort Worth, TX 76177 | Gas Operator | Jan 2010 |
| 13312 | Hillwood O & G Operating Co LP | Fort Worth, TX 76102 | Gas Operator | Jun 2025 |
| 13313 | Hilty Interests, Inc. | Kerrville, TX 78028 | Oil & Gas Operator | Jun 1989 |
| 13314 | Himco Oil & Gas, Inc. | Enid, OK 73702 | Oil & Gas Operator | Mar 2025 |
| 13315 | Hindman, E. C. Jr. Partnership | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2008 |
| 13316 | Hinds Petroleum, LLC | Houston, TX 77263 | Oil Operator | Jun 2025 |
| 13317 | Hinds Petroleum, LP | Houston, TX 77263 | Oil Operator | Feb 2017 |
| 13318 | Hines, Ralph, Jr. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2002 |
| 13319 | Hinkle Engineering, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Nov 2016 |
| 13320 | Hinkle Oil And Gas Inc | Oklahoma City, OK 73112-4275 | Oil & Gas Operator | Apr 2025 |
| 13321 | Hinkle Oil Compa | | Oil & Gas Operator | Nov 1994 |
| 13322 | Hinkle Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Jan 1999 |
| 13323 | Hinkle, Howard L. | Wichita Falls, TX 76301 | Oil & Gas Operator | Jun 2025 |
| 13324 | Hinks Petroleum Co., Inc. | Wichita, KS 67201 | Oil Operator | May 1999 |
| 13325 | Hinson Bobbie L | Bristow, OK 74010 | Oil & Gas Operator | Mar 2025 |
| 13326 | Hinson Jr Bobbie L | Bristow, OK 74010 | Oil & Gas Operator | Jul 2020 |
| 13327 | Hinterer, Dolores | New Milton, WV 26411-0000 | Gas Operator | Dec 2021 |
| 13328 | Hinto Energy, LLC | Edwards, CO 81632 | Oil Operator | Mar 2017 |
| 13329 | Hinton Production Company | MT Pleasant, TX 75455 | Oil & Gas Operator | Aug 1995 |
| 13330 | Hinton Well Servicing, Inc. | | Oil Operator | Feb 2008 |
| 13331 | Hinton, W. B. | MT Pleasant, TX 75455 | Oil & Gas Operator | Jul 1993 |
| 13332 | Hipp Oil And Gas Inc. | Big Spring, TX 79720 | Oil & Gas Operator | Jun 2025 |
| 13333 | Hirt Farms Incor | | Oil & Gas Operator | Apr 1994 |
| 13334 | His Energy Corporation Inc | Newcastle, OK 73065-1461 | Oil Operator | Feb 2018 |
| 13335 | Hispanic Oil & Gas Energy, LLC | Houston, TX 77056 | Oil Operator | Mar 2025 |
| 13336 | Hitchcock, VIcki L. & Jacob J. | Randolph, NY 14772 | Gas Operator | Dec 2023 |
| 13337 | Hitchita #1 LP | Edmond, OK 73013-6628 | Oil & Gas Operator | Sep 1997 |
| 13338 | Hitex Resources, LP | Houston, TX 77265 | Oil & Gas Operator | Jun 2025 |
| 13339 | Hiwa Petroleum Corp. | | Oil & Gas Operator | Mar 2025 |
| 13340 | Hixon James E | | Oil Operator | Feb 2004 |
| 13341 | Hizey Service & | | Oil Operator | Apr 1994 |
| 13342 | HJ, Inc. | Garden City, KS 67846 | Oil & Gas Operator | Feb 2025 |
| 13343 | HK Energy Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2023 |
| 13344 | HKW Oil Company, Inc. | Bunker Hill, KS 67626 | Oil Operator | Dec 2009 |
| 13345 | HLH Drilling Inc | Andover, OH 44003-960-960 | Oil & Gas Operator | Dec 1985 |
| 13346 | HLH Realty Co | Drumright, OK 74030 | Oil & Gas Operator | Mar 2016 |
| 13347 | HMD Oil Co Inc | Ardmore, OK 73401-2542 | Oil & Gas Operator | Apr 2025 |
| 13348 | HMH Operators, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 13349 | HMN Partnership | Argonia, KS 67004 | Oil Operator | Nov 1993 |
| 13350 | HMT Genesis Petroleum Corp. | Fort Worth, TX 76116 | Oil & Gas Operator | Nov 2008 |
| 13351 | HMX Investments, Inc. | Katy, TX 77494 | Oil & Gas Operator | Mar 2025 |
| 13352 | HNG Oil Company | | Oil & Gas Operator | Jun 1987 |
| 13353 | HNG Storage Company | Houston, TX 77042 | Oil & Gas Operator | Mar 2002 |
| 13354 | Hoag Memorial Hospital Presbyterian | | Gas Operator | Apr 2025 |
| 13355 | Hoard John L Family Trust | Ardmore, OK 73402-1706 | Oil & Gas Operator | Jun 2022 |
| 13356 | Hobbs Energy Corporation | San Angelo, TX 76904 | Oil & Gas Operator | Mar 2008 |
| 13357 | Hobbs Oil Co. | | Oil Operator | Dec 1999 |
| 13358 | Hobbs Production LLC | | Oil Operator | Mar 2023 |
| 13359 | Hobbs, Columbus Agent | | Oil & Gas Operator | Dec 2018 |
| 13360 | Hobbs, Donald M. | Edinboro, PA 16412 | Gas Operator | Dec 2023 |
| 13361 | Hobo Oil & Gas | | Oil & Gas Operator | Aug 2013 |
| 13362 | Hobson Petroleum Corp | | Oil & Gas Operator | Sep 1991 |
| 13363 | Hoc Ca LLC | | Oil & Gas Operator | Apr 2025 |
| 13364 | Hoc Operating Co., Inc. | Houston, TX 77056 | Oil & Gas Operator | Nov 1999 |
| 13365 | Hochendel Consultants | | Oil & Gas Operator | Jul 1995 |
| 13366 | Hocking Hills Energy And Well Service LLC | Logan, OH 43138-8497 | Oil & Gas Operator | Dec 2023 |
| 13367 | Hocking Technical College | Nelsonville, OH 45764 | Oil & Gas Operator | Dec 2023 |
| 13368 | Hockran, Thomas A. | Bemus Point, NY 14712 | Gas Operator | Dec 2023 |
| 13369 | Hoco Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 2025 |
| 13370 | Hodgden Operating Co., Inc. | Enid, OK 73702 | Oil & Gas Operator | Apr 2025 |
| 13371 | Hodgden, Jack D. | Enid, OK 73702 | Oil & Gas Operator | Apr 2000 |
| 13372 | Hodge T F | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2007 |
| 13373 | Hodge, T.F. & Morrow Oil & Gas Co. | | Oil & Gas Operator | Sep 1993 |
| 13374 | Hodges & Hodges Oil Venture | Gallup, NM 87301 | Oil Operator | May 1999 |
| 13375 | Hodges & Hodges Productions | Anson, TX 79501 | Oil & Gas Operator | Aug 2003 |
| 13376 | Hodges & Rister | Abilene, TX 79603 | Oil & Gas Operator | Apr 2016 |
| 13377 | Hodges Oil | | Oil Operator | Feb 2025 |
| 13378 | Hodges, Dennis D. And Peggy D. | Reading, KS 66868 | Oil Operator | Feb 2025 |
| 13379 | Hodges, Thomas | Alvord, TX 76225 | Oil & Gas Operator | Oct 2002 |
| 13380 | Hodges, Tommie Ann | Alvord, TX 76225 | Oil & Gas Operator | Jun 2018 |
| 13381 | Hoefle Oil Company | | Gas Operator | Dec 2011 |
| 13382 | Hoehn French | Enid, OK 73701-5600 | Oil & Gas Operator | Oct 1996 |
| 13383 | Hoehn Oil | Wellsville, KS 66092 | Oil Operator | Oct 1998 |
| 13384 | Hoehn Oil LLC | Wellsville, KS 66092 | Oil Operator | Feb 2025 |
| 13385 | Hoell Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2025 |
| 13386 | Hoelscher, Weldon | San Angelo, TX 76904 | Oil & Gas Operator | Aug 2003 |
| 13387 | Hoener Ross Inco | | Oil Operator | Dec 1991 |
| 13388 | Hoener, Ross | Iuka, KS 67066 | Oil & Gas Operator | Feb 2025 |
| 13389 | Hoepker, Larry | Humboldt, KS 66748 | Oil Operator | Dec 2024 |
| 13390 | Hoermann, S. E. | Seguin, TX 78155 | Oil & Gas Operator | Jun 2025 |
| 13391 | Hofco, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jun 2025 |
| 13392 | Hoff Elmer & Mildred | | Oil & Gas Operator | Jan 1991 |
| 13393 | Hoff Oil & Gas | | Oil Operator | May 2013 |
| 13394 | Hoffman George A | | Oil & Gas Operator | Dec 2022 |
| 13395 | Hoffman Oil & Gas Company | | Oil & Gas Operator | Aug 1997 |
| 13396 | Hoffman Oil, Inc. | Claflin, KS 67525 | Oil Operator | Feb 2025 |
| 13397 | Hoffman Petroleu | | Oil Operator | Sep 1989 |
| 13398 | Hoffman Petroleum, Inc. | Littleton, CO 80120 | Oil Operator | Sep 1996 |
| 13399 | Hoffman Resources LLC | Hoisington, KS 67544 | Oil & Gas Operator | Feb 2025 |
| 13400 | Hoffman, Brian | Claflin, KS 67525 | Oil Operator | Feb 2025 |