| 1401 | Enterprise Marke | | Oil & Gas Operator | Oct 1992 |
| 1402 | Enterprise Oil Marketing Corp. | Little Rock, AR 72206 | Oil Operator | Sep 1998 |
| 1403 | Enterra Resources, LLC | Edmond, OK 73083 | Oil & Gas Operator | May 2026 |
| 1404 | Entransco Energy LLC | Dewey, OK 74029 | Oil & Gas Operator | Oct 2024 |
| 1405 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 1406 | Epoc, LLC | Andover, KS 67002 | Oil Operator | May 2026 |
| 1407 | Eps Resources Corp | Englewood, CO 80111 | Oil & Gas Operator | Dec 2009 |
| 1408 | Equinox Oil Comp | | Oil Operator | Dec 1996 |
| 1409 | Equinox Oil Company Inc | Plainville, KS 67663 | Oil & Gas Operator | Dec 2019 |
| 1410 | Erbe, Dwayne E. (Estate) | Neodesha, KS 66757 | Oil Operator | Mar 2026 |
| 1411 | Erbert Don Oil C | | Oil Operator | May 1993 |
| 1412 | Erbert, Harold | Iola, KS 66749 | Oil Operator | Dec 1992 |
| 1413 | Ernst & Steinle | | Oil Operator | Oct 1991 |
| 1414 | Ers Operating Company LLC | Bothell, WA 98012 | Oil & Gas Operator | Jun 2016 |
| 1415 | Escher Corporation | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 2026 |
| 1416 | Esp Development, Inc. | Salina, KS 67401 | Oil Operator | Apr 2026 |
| 1417 | Essex Resources, LLC | Coffeyville, KS 67337 | Oil Operator | May 2026 |
| 1418 | Estate Of Crawford Oil & Gas, Inc. | Midland, TX 79705 | Oil & Gas Operator | Aug 2006 |
| 1419 | Eternity Exploration, LLC | Coppell, TX 75019 | Oil Operator | Jun 2021 |
| 1420 | Euram Petroleum | | Oil Operator | Apr 1986 |
| 1421 | Evans Douglas G | | Oil Operator | Aug 1987 |
| 1422 | Evans Energy, LLC | Mount Hope, KS 67108 | Oil & Gas Operator | May 2026 |
| 1423 | Evans Jay Oil Co | Iola, KS 66749 | Oil Operator | Apr 2001 |
| 1424 | Evans John Roy | | Oil Operator | Nov 1992 |
| 1425 | Evans Oil D W - | | Oil Operator | Mar 1992 |
| 1426 | Evans Oil Inc. | Lebo, KS 66856 | Oil Operator | May 2026 |
| 1427 | Evans Well Service | | Oil Operator | Oct 2013 |
| 1428 | Evans, Glenn A. | Paola, KS 66071 | Oil Operator | Oct 1989 |
| 1429 | Evenson Oil Oper | | Oil Operator | Nov 1991 |
| 1430 | Everglow Energy, LLC | Oklahoma City, OK 73162 | Oil & Gas Operator | May 2026 |
| 1431 | Evergreen Operating Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2019 |
| 1432 | Evertson Oil Company Inc | Kimball, NE 69145 | Oil & Gas Operator | Sep 2001 |
| 1433 | Evolution Oil & | | Oil & Gas Operator | Apr 1993 |
| 1434 | Excalibur Prod C | | Oil & Gas Operator | Jun 1995 |
| 1435 | Excalibur Production Company, Inc. | McPherson, KS 67460 | Oil & Gas Operator | May 2026 |
| 1436 | Excel Oil & Gas L.L.C. | Bucyrus, KS 66013 | Oil Operator | May 2026 |
| 1437 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Jun 2026 |
| 1438 | Exodus Gas & Oil LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 1439 | Exok Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Jun 2026 |
| 1440 | Extreme Energy Co | | Oil & Gas Operator | May 2026 |
| 1441 | Exxon Corporatio | | Oil & Gas Operator | Dec 1995 |
| 1442 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jan 2026 |
| 1443 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Sep 2026 |
| 1444 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Jun 2026 |
| 1445 | F & M Oil Compan | | Oil & Gas Operator | Feb 1993 |
| 1446 | F & M Oil Company Inc | Pettus, TX 78146 | Oil & Gas Operator | Sep 2026 |
| 1447 | F & S Oil | | Oil Operator | Dec 2021 |
| 1448 | F E W Oil Compan | | Oil Operator | Jul 1993 |
| 1449 | F.D. Looman | Sedan, KS 67361 | Oil Operator | Jun 2008 |
| 1450 | F.E.W. Oil Co. | Oceanside, CA 92058 | Oil Operator | Oct 2012 |
| 1451 | F.G. Holl Co., LLC | Wichita, KS 67206 | Oil & Gas Operator | May 2026 |
| 1452 | Fadely, Dale Leon | Sedan, KS 67361 | Oil & Gas Operator | Dec 2009 |
| 1453 | Fair Banks Enterprises | Chanute, KS 66720 | Oil Operator | Mar 2013 |
| 1454 | Fair Oil, LTD. | Tyler, TX 75710 | Oil & Gas Operator | Sep 2026 |
| 1455 | Fair Seas Enterp | | Oil & Gas Operator | Jun 1988 |
| 1456 | Fairchild Explor | | Oil & Gas Operator | Apr 1995 |
| 1457 | Fairchild, Bob | Kingman, KS 67068 | Oil Operator | Jan 2001 |
| 1458 | Fairway Petroleu | | Oil & Gas Operator | Dec 1994 |
| 1459 | Fairway Petroleum Inc | Stafford, TX 77497 | Oil & Gas Operator | Nov 2001 |
| 1460 | Faith Partners I | | Oil Operator | Feb 1989 |
| 1461 | Faith Petroleum, Inc. | Arkansas City, KS 67005 | Oil & Gas Operator | May 2026 |
| 1462 | Falcon Energy Co | | Oil Operator | Apr 1992 |
| 1463 | Falcon Explorati | | Oil & Gas Operator | Apr 1995 |
| 1464 | Falcon Exploration | | Oil Operator | Dec 1994 |
| 1465 | Falcon Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | May 2026 |
| 1466 | Falkin, Richard T. | Hepler, KS 66746 | Oil Operator | Nov 2019 |
| 1467 | Fancher Oil Co. | | Oil & Gas Operator | Sep 1995 |
| 1468 | Fancher Oil Comp | | Oil & Gas Operator | Aug 1995 |
| 1469 | Fancher, Geo. H, Jr. | Denver, CO 80202 | Gas Operator | Mar 1996 |
| 1470 | Fanshier, Roger | Seward, KS 67576 | Oil Operator | Oct 2008 |
| 1471 | Farmer Dog Oil Co., A General Partnership | Humboldt, KS 66748 | Oil Operator | Apr 2026 |
| 1472 | Farmer John O Inc | Russell, KS 67665 | Oil & Gas Operator | May 2026 |
| 1473 | Farmer, Seth | Independence, KS 67301 | Oil Operator | Apr 2026 |
| 1474 | Farrar Oilwell S | | Oil & Gas Operator | Jul 1986 |
| 1475 | Farrar Pump & Su | | Oil & Gas Operator | Dec 1996 |
| 1476 | Farrar Pump & Supply Co., Inc. | Medicine Lodge, KS 67104 | Oil & Gas Operator | Jun 2009 |
| 1477 | Farris Oil, Inc. | Sedan, KS 67361 | Oil Operator | May 2026 |
| 1478 | Farris Well Service | | Oil & Gas Operator | Dec 2021 |
| 1479 | Farthing Don Oil | | Oil & Gas Operator | Jun 1994 |
| 1480 | Fastrak Energy, LLC | Cherryvale, KS 67335 | Oil & Gas Operator | May 2026 |
| 1481 | Faulconer, Vernon E., Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jul 2026 |
| 1482 | Fe Co. | Derby, KS 67037 | Oil & Gas Operator | Dec 2009 |
| 1483 | Fell Oil & Gas C | | Oil Operator | Oct 1991 |
| 1484 | Fender, Mildred A. | Russell, KS 67665 | Oil & Gas Operator | Jun 2000 |
| 1485 | Ferguson Orval L | | Oil & Gas Operator | Oct 1983 |
| 1486 | Ferris, Wakyn W. | Denver, CO 80202 | Oil Operator | Jun 1988 |
| 1487 | Fewins, Gary D. | Moran, KS 66755 | Oil Operator | Jul 2019 |
| 1488 | Fidelity Energy, Inc. | Houston, TX 77055 | Oil & Gas Operator | Dec 2009 |
| 1489 | Fina Oil & Chemi | | Oil & Gas Operator | Oct 1995 |
| 1490 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 1491 | Finley Oil Compa | | Oil Operator | Oct 1992 |
| 1492 | Finney Drilling Company | Wann, OK 74083-2314 | Oil Operator | Jul 2018 |
| 1493 | Finney Oil Company | | Oil & Gas Operator | May 2026 |
| 1494 | First Energy Cor | | Oil Operator | Aug 1990 |
| 1495 | First Energy Corporation | | Oil & Gas Operator | Jun 1993 |
| 1496 | First National Oil Inc | Edmond, OK 73003 | Oil & Gas Operator | Jun 2026 |
| 1497 | Five Star Energy, Inc. | Seguin, TX 78155 | Oil & Gas Operator | Jul 2026 |
| 1498 | Flatirons Resources LLC | Westminster, CO 80021 | Oil & Gas Operator | Dec 2022 |
| 1499 | Flatland Energy, LLC | Gardner, KS 66030 | Oil Operator | May 2026 |
| 1500 | Flatland Oil Com | | Oil Operator | Sep 1985 |