| 9501 | Enex Resources C | | Gas Operator | Nov 1987 |
| 9502 | Enex Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2009 |
| 9503 | Enex Rexources Corp. | | Oil & Gas Operator | Jul 1981 |
| 9504 | Enexco, Inc. | Dallas, TX 75243 | Oil & Gas Operator | Mar 2017 |
| 9505 | Enfield Operating Company, LLC | Coppell, TX 75019 | Oil Operator | May 2025 |
| 9506 | Eng, George E. | Midland, TX 79701 | Oil & Gas Operator | Dec 2011 |
| 9507 | Engas Corporation | Jacksboro, TX 76458 | Oil & Gas Operator | May 2008 |
| 9508 | Engas XP, LLC | Wimberley, TX 78676 | Oil & Gas Operator | May 2025 |
| 9509 | Engel Farms Corporation | Liberal, KS 67901 | Gas Operator | Mar 2003 |
| 9510 | Engel Investments LLC | Hays, KS 67601 | Oil Operator | Oct 2024 |
| 9511 | Engelke, R. H. | San Antonio, TX 78230 | Oil & Gas Operator | May 2025 |
| 9512 | Engelke, Randall Glen | Luling, TX 78648 | Oil & Gas Operator | Jul 2007 |
| 9513 | Engeo Co. | | Oil & Gas Operator | Nov 1986 |
| 9514 | Engineering & Production Service, Inc. | Farmington, NM 87499 | Oil & Gas Operator | Apr 2025 |
| 9515 | Engineers Oil Company | | Oil & Gas Operator | Mar 2025 |
| 9516 | England Operating LLC | Littleton, CO 80120-4529 | Oil & Gas Operator | Nov 2014 |
| 9517 | Engle, George S | | Oil Operator | Dec 2023 |
| 9518 | Engler, Inc. | Harlingen, TX 78552-0000 | Gas Operator | Dec 2020 |
| 9519 | English Oil & Gas | | Oil Operator | Sep 2021 |
| 9520 | English Oil And Gas, L.L.C. | | Oil Operator | Sep 2021 |
| 9521 | Engroup Resources, L.P. | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 9522 | Enhanced Energy Partners Corp | Tomball, TX 77377 | Oil & Gas Operator | May 2025 |
| 9523 | Enhanced Hydrocarbons Inc | Claremore, OK 74017 | Oil & Gas Operator | May 2013 |
| 9524 | Enhanced RS, Inc. | Luling, TX 78648 | Oil Operator | May 2025 |
| 9525 | Eni Us Operating Co. Inc. | | Oil & Gas Operator | Sep 2024 |
| 9526 | Enid Operating, Inc. | Pampa, TX 79065 | Oil & Gas Operator | May 2025 |
| 9527 | Eninun Inc | Dayton, OH 45415 | Oil & Gas Operator | Dec 1984 |
| 9528 | Enline Operating, L.L.C. | Houston, TX 77019 | Oil & Gas Operator | Jun 1998 |
| 9529 | Enline Resources, LLC | Houston, TX 77254 | Oil & Gas Operator | Feb 1996 |
| 9530 | Enlink Lig, LLC | | Oil Operator | Jan 2025 |
| 9531 | Enlo Energy Co., LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2001 |
| 9532 | Enloe Jenny L | Skiatook, OK 74070 | Oil Operator | Nov 1998 |
| 9533 | Enloe Oil Company | Olney, TX 76374 | Oil & Gas Operator | Jun 2000 |
| 9534 | Enmark Gas Gathering L. P. | Dallas, TX 75252 | Oil & Gas Operator | Jan 2025 |
| 9535 | Enneberg Oil & Gas | Kevin, MT 59454 | Oil Operator | Mar 2025 |
| 9536 | Ennex, Inc. | | Oil & Gas Operator | Oct 1993 |
| 9537 | Ennis Bill H | Sasakwa, OK 74867-0001 | Oil & Gas Operator | Sep 2014 |
| 9538 | Enoch Oil | Wichita, KS 67216 | Oil Operator | Jan 2001 |
| 9539 | Enogex Exploration Corp | Oklahoma City, OK 73124-0300 | Oil & Gas Operator | Jun 2000 |
| 9540 | Enpower Resources Inc. | Sugar Land, TX 77479 | Oil & Gas Operator | May 2025 |
| 9541 | Enpro LLC | Cottonwood, UT 84047 | Oil & Gas Operator | Nov 2017 |
| 9542 | Enpro, Inc | Winchester, KY 40391 | Oil & Gas Operator | Dec 2023 |
| 9543 | Enprop Inc | | Oil & Gas Operator | Feb 2013 |
| 9544 | Enr Operating, LLC | Eunice, NM 88231 | Oil & Gas Operator | May 2025 |
| 9545 | Enre Corp. | San Antonio, TX 78209 | Oil & Gas Operator | Mar 2005 |
| 9546 | Enre LP | Kingwood, TX 77339 | Oil & Gas Operator | Feb 2004 |
| 9547 | Enrich Oil Corporation | Abilene, TX 79604 | Oil & Gas Operator | May 2025 |
| 9548 | Enron Corporatio | | Oil & Gas Operator | Aug 1999 |
| 9549 | Enron Oil & Gas Company | Houston, TX 77210 | Oil & Gas Operator | Dec 1999 |
| 9550 | Enserch Exploration | | Oil & Gas Operator | Oct 1996 |
| 9551 | Enserch Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 9552 | Enserch Oil & Gas, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 1998 |
| 9553 | Ensight Energy Group Inc | Richardson, TX 75080-2370 | Oil & Gas Operator | Feb 2025 |
| 9554 | Ensight Energy Management, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2005 |
| 9555 | Ensight III Energy MGMT, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2008 |
| 9556 | Ensight IV Energy Management,LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 9557 | Ensight Resources, L.L.C. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2001 |
| 9558 | Ensign Oil & Gas Inc. | | Oil & Gas Operator | Jul 1993 |
| 9559 | Ensign Operating | | Oil & Gas Operator | Oct 1994 |
| 9560 | Ensign Operating Co. | Denver, CO 80202 | Oil & Gas Operator | Jan 2004 |
| 9561 | Ensign Operating LLC | Houston, TX 77086 | Oil & Gas Operator | Feb 2023 |
| 9562 | Ensminger D & J | | Oil Operator | Dec 1994 |
| 9563 | Ensminger Energy LLC | Moran, KS 66755 | Oil Operator | Jan 2025 |
| 9564 | Ensminger Oil, LLC | Moran, KS 66755 | Oil Operator | Jan 2025 |
| 9565 | Ensminger, Donald & Jack, A General Partnership | Moran, KS 66755 | Oil Operator | Jun 2005 |
| 9566 | Ensource Inc | Midland, TX 79705 | Oil & Gas Operator | Aug 1998 |
| 9567 | Enstar Corporation | Houston, TX 77252 | Oil & Gas Operator | Apr 1988 |
| 9568 | Enstar Energy, Inc. | Arlington, TX 76003 | Oil & Gas Operator | May 2025 |
| 9569 | Enstar Petroleum Company | | Oil & Gas Operator | Aug 1985 |
| 9570 | Enstar Petroleum Inc | | Oil & Gas Operator | Apr 1985 |
| 9571 | Ensz, Jerry | Sublette, KS 67877 | Gas Operator | Jan 2025 |
| 9572 | Entek GRB LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
| 9573 | Enterprise Energy Corp | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1985 |
| 9574 | Enterprise Energy Exploration Inc | Tulsa, OK 74133-6724 | Oil & Gas Operator | Mar 2025 |
| 9575 | Enterprise Energy Prod Co Inc | Tulsa, OK 74133-6754 | Oil & Gas Operator | Mar 2015 |
| 9576 | Enterprise Exploration Inc | Tulsa, OK 74133 | Oil & Gas Operator | Nov 2020 |
| 9577 | Enterprise Gathering LLC | | Oil Operator | Dec 2024 |
| 9578 | Enterprise Inc | Hays, KS 67601 | Oil Operator | Sep 2015 |
| 9579 | Enterprise Marke | | Oil & Gas Operator | Oct 1992 |
| 9580 | Enterprise Oil Marketing Corp. | Little Rock, AR 72206 | Oil Operator | Sep 1998 |
| 9581 | Enterprise Resources Inc. | | Oil & Gas Operator | Jun 1979 |
| 9582 | Enterprising Enterprises Inc | Tulsa, OK 74137 | Oil Operator | Jun 2009 |
| 9583 | Enterra Resources, LLC | Edmond, OK 73083 | Oil & Gas Operator | Jan 2025 |
| 9584 | Entex Oil Company | | Gas Operator | Dec 1993 |
| 9585 | Entex Petroleum, Inc. | Oklahoma City, OK 73113 | Oil & Gas Operator | Nov 1997 |
| 9586 | Entex, Inc. | | Oil & Gas Operator | Dec 1984 |
| 9587 | Entransco Energy LLC | Dewey, OK 74029 | Oil & Gas Operator | Oct 2024 |
| 9588 | Enveron Corporation | Portage, MI 49024 | Oil & Gas Operator | Dec 2017 |
| 9589 | Envirogas Inc | Hamburg, NY 14075 | Oil & Gas Operator | Dec 1992 |
| 9590 | Environmental BR Ser Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 1987 |
| 9591 | Environmental Exp Co | North Canton, OH 44720 | Oil & Gas Operator | Dec 1998 |
| 9592 | Environmental Oil Co | Thornville, OH 43076 | Oil & Gas Operator | Dec 2023 |
| 9593 | Environmental Soil Recovery LTD | | Oil Operator | Feb 2025 |
| 9594 | Envirosearch Corporation | | Oil Operator | Dec 1992 |
| 9595 | Envirotek Fuel Systems Inc | Dallas, TX 75243 | Oil & Gas Operator | May 2013 |
| 9596 | Enwest Resources, Inc. | Midland, TX 79705 | Oil & Gas Operator | Aug 1994 |
| 9597 | EOG (Oklahoma) Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Oct 2016 |
| 9598 | EOG A Resources, Inc. | Artesia, NM 88210 | Oil & Gas Operator | Dec 2018 |
| 9599 | EOG M Resources, Inc. | Artesia, NM 88211 | Oil & Gas Operator | Dec 2018 |
| 9600 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |