| 13501 | Hybrid Operating, Incorporated | Carlsbad, CA 92009 | Oil & Gas Operator | May 2024 |
| 13502 | Hyco Oil Inc | Newcastle, WY 82701 | Oil & Gas Operator | Dec 2006 |
| 13503 | Hyde-Marrs, Inc. | Wichita, KS 67202 | Oil Operator | Aug 1997 |
| 13504 | Hydroc Oil Company | Borger, TX 79007 | Oil & Gas Operator | May 2012 |
| 13505 | Hydrocarbon Exploration, Inc. | | Oil & Gas Operator | Dec 2008 |
| 13506 | Hydrocarbon Generation, Inc. | Allegany, NY 14706 | Oil & Gas Operator | Dec 2022 |
| 13507 | Hydrocarbon Horizons, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | May 2024 |
| 13508 | Hydrocarbon Inv, Inc | | Oil Operator | Dec 2018 |
| 13509 | Hydrocarbon Lease Management LTD | Addison, TX 75001 | Oil & Gas Operator | Jul 2002 |
| 13510 | Hydrocarbon Management, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Dec 1996 |
| 13511 | Hydrocarbon MGMT., Inc. | | Oil & Gas Operator | Mar 1997 |
| 13512 | Hydrocarbon Operating, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | May 2024 |
| 13513 | Hydrocarbon Resources LTD | Medina, OH 44256 | Oil & Gas Operator | Dec 2022 |
| 13514 | Hydrocarbon Technology Services | | Oil & Gas Operator | Dec 2000 |
| 13515 | Hydrogeo Energy, LLC | Houston, TX 77074 | Oil Operator | May 2024 |
| 13516 | Hydrogeo, L.L.C. | Houston, TX 77074 | Oil & Gas Operator | May 2024 |
| 13517 | Hyland Oil Corporation | | Oil & Gas Operator | Apr 1990 |
| 13518 | Hylmn LLC | | Oil Operator | Jun 2022 |
| 13519 | Hyman Muslow | | Oil Operator | Jun 1995 |
| 13520 | Hyndrex Resources | | Oil & Gas Operator | Apr 2018 |
| 13521 | Hyperion Energy LP | Dallas, TX 75206 | Oil & Gas Operator | May 2014 |
| 13522 | Hyperion Oil & Gas LLC | Dallas, TX 75251 | Oil & Gas Operator | May 2024 |
| 13523 | Hyquest Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | Mar 2015 |
| 13524 | I & F Oil And Farm | | Oil & Gas Operator | Dec 2009 |
| 13525 | I & L Development Co. | Dallas, TX 75219 | Oil & Gas Operator | Mar 1996 |
| 13526 | I & M Oil Production, LLC | Overland Park, KS 66209 | Oil & Gas Operator | Mar 2023 |
| 13527 | I C Gas Amcana Inc | Tulsa, OK 74103-3713 | Oil & Gas Operator | Apr 1996 |
| 13528 | I D Oil Company Inc | Sperry, OK 74073-9417 | Oil Operator | Jan 2013 |
| 13529 | I T Enterprises Inc | Tulsa, OK 74170-0775 | Oil & Gas Operator | Mar 2011 |
| 13530 | I-Mac Petroleum Service Inc | Bixby, OK 74008-3778 | Oil & Gas Operator | Apr 2020 |
| 13531 | I. H. Delatte | | Oil & Gas Operator | Jul 1991 |
| 13532 | I. J. Wilhite | | Oil Operator | Apr 2000 |
| 13533 | I. J. Wilhite & Star Drilling, Inc. | | Oil Operator | Sep 1973 |
| 13534 | I. W. McKnight,Production | | Oil Operator | Jan 1986 |
| 13535 | I.G. Petroleum, L.L.C | | Oil & Gas Operator | Dec 2018 |
| 13536 | I.T. Corporation | Arlington, TX 76016 | Oil & Gas Operator | May 2024 |
| 13537 | Ia Operating, Inc. | Edmond, OK 73003 | Oil Operator | Jan 2024 |
| 13538 | Iacobucci, Gary | Eden, NY 14057 | Gas Operator | Dec 2022 |
| 13539 | Iacx Energy LLC | Dallas, TX 75240 | Oil & Gas Operator | Mar 2024 |
| 13540 | Iacx Production LLC | Dallas, TX 75244 | Oil & Gas Operator | Feb 2024 |
| 13541 | Iantha Resources LLC | Garnett, KS 66032 | Oil Operator | Dec 2019 |
| 13542 | Iantorno Brothers Oil | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2022 |
| 13543 | Ibc Petroleum, Inc. | San Antonio, TX 78258 | Oil & Gas Operator | May 2024 |
| 13544 | Iberia Operating Corporation | | Oil & Gas Operator | Jan 2003 |
| 13545 | Ibex Resources Operating LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2007 |
| 13546 | Ibex Resources, LLC | Austin, TX 78751 | Oil & Gas Operator | Jul 1999 |
| 13547 | Ica Energy Operating, L.L.C. | Odessa, TX 79760 | Oil & Gas Operator | May 2024 |
| 13548 | Icarus Operating Corporation | Spring, TX 77393 | Oil & Gas Operator | May 2024 |
| 13549 | Ice Brothers, Inc. | Monahans, TX 79756 | Oil & Gas Operator | May 2024 |
| 13550 | Ice Well Services, Inc. | Abilene, TX 79603 | Oil & Gas Operator | May 2024 |
| 13551 | Icg Tygart Valley, LLC | Grafton, WV 26354 | Oil & Gas Operator | Dec 2021 |
| 13552 | Ickert Enterprises | Olney, TX 76374 | Oil & Gas Operator | May 2024 |
| 13553 | Ickert, A. F. Jr. | Olney, TX 76374 | Oil & Gas Operator | Apr 1998 |
| 13554 | Icon Energy Company | Oklahoma City, OK 73156-1613 | Oil & Gas Operator | Jan 2024 |
| 13555 | Iconic Oil & Gas LLC | Dallas, TX 75229 | Gas Operator | Jan 2024 |
| 13556 | Icor Oil & Gas Of Okla LTD | Claremore, OK 74018-2132 | Oil & Gas Operator | Mar 2015 |
| 13557 | Ics Energy LLC | Stamford, TX 79553 | Oil & Gas Operator | May 2024 |
| 13558 | Idaho Oil Co., Inc. | San Antonio, TX 78212 | Oil & Gas Operator | Mar 2008 |
| 13559 | Idc Energy Corp | Warren, PA 16365-0792 | Oil & Gas Operator | Dec 2021 |
| 13560 | Idgas, Inc. | Austin, TX 78746 | Oil & Gas Operator | Oct 1995 |
| 13561 | Igas Corp | Charlottesville, VA 22905-5246 | Gas Operator | Dec 2000 |
| 13562 | Igleheart Warren | Edmond, OK 73034-8964 | Oil & Gas Operator | Jun 2016 |
| 13563 | Igwt, Inc. | Rose Hill, KS 67133 | Oil & Gas Operator | Jan 2024 |
| 13564 | Ijs Oil | Saint Jo, TX 76265 | Oil & Gas Operator | May 2024 |
| 13565 | Ikard, Alan | Electra, TX 76360 | Oil & Gas Operator | May 2024 |
| 13566 | Ike Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 13567 | Ike Lovelady, Inc. | | Oil & Gas Operator | Jun 1985 |
| 13568 | Ike Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | May 2024 |
| 13569 | Ikenberry Herman & Ikenberry | | Oil Operator | Jul 1999 |
| 13570 | Iks Operating | Upton, WY 82703 | Oil & Gas Operator | Jul 2013 |
| 13571 | Il Geer & Sons Partnership | | Oil & Gas Operator | Dec 2013 |
| 13572 | Illini Development Company | | Oil & Gas Operator | Dec 2002 |
| 13573 | Illoma Oil Company Inc | Algonquin, IL 60102-1825 | Oil & Gas Operator | Mar 2015 |
| 13574 | Imagery Exploration, Inc. | Dallas, TX 75380 | Oil & Gas Operator | May 2024 |
| 13575 | Imc Exploration Co. | | Oil & Gas Operator | Oct 1986 |
| 13576 | Imhoff David | Stroud, OK 74079-9725 | Oil & Gas Operator | Nov 2018 |
| 13577 | Immink Merle | | Oil & Gas Operator | Mar 2024 |
| 13578 | Imod Oil Prod LLC | Pleasantville, PA 16341-0149 | Oil & Gas Operator | Dec 2009 |
| 13579 | Impact Energy Operating LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Mar 2024 |
| 13580 | Impact Exploration & Production LLC | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Mar 2024 |
| 13581 | Impact Exploration Company | Oklahoma City, OK 73118 | Oil & Gas Operator | May 1998 |
| 13582 | Imperator Investments LLC | Shawnee, KS 66217 | Oil Operator | Jan 2024 |
| 13583 | Imperial American Oil Corporation | Wichita, KS 67205 | Oil Operator | Dec 2009 |
| 13584 | Imperial Gas Resources LLC | Austin, TX 78701 | Oil & Gas Operator | May 2024 |
| 13585 | Imperial Occidental | | Oil & Gas Operator | Feb 2024 |
| 13586 | Imperial Oil & G | | Gas Operator | Jan 1990 |
| 13587 | Imperial Oil Com | | Oil & Gas Operator | Dec 1992 |
| 13588 | Imperial Oil Company | Houston, TX 77073 | Oil & Gas Operator | Oct 2004 |
| 13589 | Imperial Oil Of North Dakota, Inc. | | Oil & Gas Operator | Jul 2023 |
| 13590 | Imperial Oil Properties, Inc. | Wichita, KS 67201 | Oil & Gas Operator | Jun 2006 |
| 13591 | Imperial Operating Co., L.L.C. | Midland, TX 79701 | Oil Operator | Sep 2023 |
| 13592 | Imperial Petroleum, Inc. | Evansville, IN 47725 | Oil & Gas Operator | Jan 2005 |
| 13593 | Imperial-American Energy,Inc. | | Oil & Gas Operator | Jul 1978 |
| 13594 | Impetro Nonop LLC | | Oil Operator | Dec 2023 |
| 13595 | Impetro Oil & Gas, LLC | San Antonio, TX 78258 | Oil & Gas Operator | Jun 2018 |
| 13596 | Impetro Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2020 |
| 13597 | Impetro Resources LLC | | Oil & Gas Operator | Feb 2024 |
| 13598 | Ina Street Operations, Inc. | Skellytown, TX 79080 | Oil & Gas Operator | Nov 2012 |
| 13599 | Inactive Operator | | Oil Operator | Dec 1982 |
| 13600 | Inca Oil Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2009 |