| 27301 | Southfourk Partners LLC | Blanchard, OK 73010-7209 | Oil Operator | Jul 2025 |
| 27302 | Southlake Exploration, Inc. | Southlake, TX 76092 | Oil & Gas Operator | Nov 2025 |
| 27303 | Southlake Operating LLC | Weatherford, TX 76086 | Oil & Gas Operator | Nov 2025 |
| 27304 | Southland Energy Corporation | Houston, TX 77060 | Oil & Gas Operator | Aug 2022 |
| 27305 | Southland Royalt | | Oil & Gas Operator | Nov 1993 |
| 27306 | Southland Royalty Co.-Midland | Midland, TX 79702 | Oil & Gas Operator | Mar 1996 |
| 27307 | Southland Royalty Company | Houston, TX 77210 | Oil & Gas Operator | Sep 2011 |
| 27308 | Southland Royalty Company LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2021 |
| 27309 | Southport Exploration Inc | Tulsa, OK 74103-4015 | Oil & Gas Operator | Nov 1998 |
| 27310 | Southridge Homes | | Oil & Gas Operator | Dec 1999 |
| 27311 | Southridge Operating Company | San Marcos, TX 78667 | Oil & Gas Operator | Nov 2025 |
| 27312 | Southstar Energy Corporation | Ardmore, OK 73401 | Gas Operator | Aug 1990 |
| 27313 | Southstar Oil And Gas Inc | Andover, KS 67002-0123 | Oil & Gas Operator | Jul 2020 |
| 27314 | Southstone Energy, LLC | Austin, TX 78735 | Oil Operator | Nov 2025 |
| 27315 | Southwell Russell C | Warren, PA 16365-3686 | Oil & Gas Operator | Dec 2022 |
| 27316 | Southwell William R | Warren, PA 16365-1259 | Oil & Gas Operator | Dec 2017 |
| 27317 | Southwest Energy Devel.,Inc. | Sugar Land, TX 77478 | Oil & Gas Operator | Jul 2007 |
| 27318 | Southwest Energy Development Inc | Bison, OK 73720 | Oil & Gas Operator | Aug 2025 |
| 27319 | Southwest Exploration Company | Oklahoma City, OK 73132-2230 | Oil & Gas Operator | Jun 2017 |
| 27320 | Southwest Gas Producing Co Inc | | Oil & Gas Operator | Nov 1994 |
| 27321 | Southwest Gas St | | Oil & Gas Operator | Dec 1981 |
| 27322 | Southwest Gas Storage Company | | Gas Operator | Jun 2025 |
| 27323 | Southwest Gas Systems, Inc. | Spring, TX 77379 | Oil & Gas Operator | Nov 2025 |
| 27324 | Southwest Gathering Company | Alice, TX 78332 | Oil & Gas Operator | Nov 2025 |
| 27325 | Southwest General Dev., Inc. | | Oil & Gas Operator | Dec 2003 |
| 27326 | Southwest Investment Fund, Inc. | Dallas, TX 75229 | Oil & Gas Operator | Aug 2003 |
| 27327 | Southwest Land & Minerals, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Aug 2003 |
| 27328 | Southwest Loop 1604, LTD. | San Antonio, TX 78209 | Oil Operator | Sep 2022 |
| 27329 | Southwest Mississippi Oil & Gas, LLC. | | Oil Operator | Aug 2025 |
| 27330 | Southwest Oil & Land, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Dec 1999 |
| 27331 | Southwest Oil Properties, Inc. | | Oil & Gas Operator | Feb 1996 |
| 27332 | Southwest Operating Company | Overland Park, KS 66212 | Oil & Gas Operator | Mar 2012 |
| 27333 | Southwest Operating Inc. | | Oil & Gas Operator | Dec 2024 |
| 27334 | Southwest Operating, Inc.-Tyler | Tyler, TX 75701 | Oil & Gas Operator | Nov 2025 |
| 27335 | Southwest Petroleum | San Antonio, TX 78253 | Oil & Gas Operator | Nov 2025 |
| 27336 | Southwest Petroleum Corp | Drumright, OK 74030 | Oil & Gas Operator | Mar 2018 |
| 27337 | Southwest Petroleum Oil & Gas Explor LLC | San Bernardino, CA 92404-1010 | Oil & Gas Operator | Jun 2022 |
| 27338 | Southwest Production Co | Richardson, TX BADADDR | Oil & Gas Operator | Apr 1997 |
| 27339 | Southwest Resources, Inc. | Brenham, TX 77834 | Oil & Gas Operator | Nov 2025 |
| 27340 | Southwest Rig Service | | Oil & Gas Operator | Nov 1998 |
| 27341 | Southwest Royalties, Inc. | Midland, TX 79710 | Oil & Gas Operator | Nov 2025 |
| 27342 | Southwest-Operating | Penwell, TX 79776 | Oil & Gas Operator | Nov 2025 |
| 27343 | Southwestern Electric Power Co | Dallas, TX 75266 | Oil & Gas Operator | Dec 1989 |
| 27344 | Southwestern Energy Prod Co | Houston, TX 77032 | Oil & Gas Operator | Jun 2015 |
| 27345 | Southwestern Exploration Consultants Inc | Oklahoma City, OK 73118-1116 | Oil & Gas Operator | Aug 2025 |
| 27346 | Southwestern Inc | Hobbs, NM 88240 | Oil Operator | Oct 2009 |
| 27347 | Southwestern Production Corporation | Lakewood, CO 80228 | Oil & Gas Operator | Sep 2025 |
| 27348 | Southwind Consulting | Pratt, KS 67124 | Oil Operator | Oct 1997 |
| 27349 | Southwind Exploration, LLC | Venice, FL 34293 | Oil & Gas Operator | Sep 2003 |
| 27350 | Southwind Oil & Gas LLC | | Oil & Gas Operator | Dec 2023 |
| 27351 | Southwind Petroleum Corp. | Wichita, KS 67203 | Oil & Gas Operator | Jun 2022 |
| 27352 | Sovereign Eagle, LLC | Roswell, NM 88202 | Oil & Gas Operator | Jul 2018 |
| 27353 | Sovereign Energy Corp. | | Oil Operator | Dec 2001 |
| 27354 | Sovereign Operating Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2016 |
| 27355 | Sovereign Petroleum Company, LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Jul 2013 |
| 27356 | Sowers William & Sara | Blue Rock, OH 43720 | Oil Operator | Dec 2022 |
| 27357 | Sowle Exploratio | | Oil Operator | Aug 1986 |
| 27358 | Sowle Explorations | | Oil Operator | Dec 2002 |
| 27359 | Sozo Natural Resources LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2025 |
| 27360 | SP Energy Development Company | Seattle, WA 98101-3277 | Oil & Gas Operator | Mar 2015 |
| 27361 | Space Production Inc. | Monahans, TX 79756 | Oil & Gas Operator | Nov 2025 |
| 27362 | Spacht, James W. & Shelly F | Ripley, NY 14775 | Gas Operator | Dec 2024 |
| 27363 | Spade Energy L.L.C. | Wichita Falls, TX 76310 | Oil & Gas Operator | Nov 2025 |
| 27364 | Spain Oil Company | Somerset, TX 78069 | Oil & Gas Operator | Nov 2025 |
| 27365 | Spalding Energy, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Nov 2025 |
| 27366 | Spalsbury, Arthur L | Hays, KS 67601 | Oil Operator | Aug 2001 |
| 27367 | Spark'S Energy Inc | Perry, OK 73077 | Oil & Gas Operator | Nov 2014 |
| 27368 | Sparkman Energy, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Nov 2025 |
| 27369 | Sparkman Rodger E | Jenks, OK 74037-0267 | Oil Operator | Sep 2018 |
| 27370 | Sparks Daniel M | Chickasha, OK 73023-1435 | Oil & Gas Operator | Apr 2014 |
| 27371 | Sparks Greg | Afton, OK 74331 | Oil & Gas Operator | Jun 2025 |
| 27372 | Sparks Harold | Radnor, OH 43066 | Oil & Gas Operator | Dec 1987 |
| 27373 | Sparks Mick Oil Company Inc | Jennings, OK 74038-0250 | Oil & Gas Operator | May 2025 |
| 27374 | Sparks Petroleum Company | Oklahoma City, OK 73128 | Oil & Gas Operator | Mar 1998 |
| 27375 | Sparks Resources Inc | Bristow, OK 74010 | Oil & Gas Operator | Aug 2025 |
| 27376 | Sparks, Pearlman E | Mazie, KY 41160 | Oil Operator | Dec 2015 |
| 27377 | Sparks, Sidney A., Trustee | Alice, TX 78332 | Oil & Gas Operator | Jun 1996 |
| 27378 | Sparlin J L | Oklahoma City, OK 73156-1446 | Oil Operator | Aug 2025 |
| 27379 | Sparrow Oil & Gas LLC | | Oil & Gas Operator | Sep 2025 |
| 27380 | Sparrow Operating LLC | Comanche, OK 73529-9747 | Oil Operator | Aug 2025 |
| 27381 | Sparta Energy Corp | Oak Brook, IL 60521 | Oil & Gas Operator | Dec 1985 |
| 27382 | Sparta Exploration LLC | Houston, TX 77279 | Oil & Gas Operator | Nov 2025 |
| 27383 | Spartagus Corporation | Grand Saline, TX 75140 | Oil & Gas Operator | Sep 2004 |
| 27384 | Spartan Oil Corporation | Abilene, TX 79601 | Oil & Gas Operator | Aug 2003 |
| 27385 | Spartan Operating Company, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Feb 2013 |
| 27386 | Spartan Petroleum Corporation | Houston, TX 77079 | Oil & Gas Operator | Oct 1987 |
| 27387 | Spartan Resource MGMT Corp | Rural Valley, PA 16249-0326 | Gas Operator | Dec 2024 |
| 27388 | Spartan Resources LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2025 |
| 27389 | Spartan Royalties, LLC | | Oil Operator | Dec 2024 |
| 27390 | SPC Resources, LLC | Midland, TX 79701 | Oil & Gas Operator | Feb 2024 |
| 27391 | Spear Production Company, Inc. | Shreveport, LA 71161 | Oil Operator | Nov 2025 |
| 27392 | Spearco Oil | Electra, TX 76360 | Oil & Gas Operator | Aug 2003 |
| 27393 | Spearpoint Energy LLC | Seminole, OK 74818-1247 | Oil Operator | Jun 2015 |
| 27394 | Spears Terry | Osage, OK 74054 | Oil Operator | Oct 2024 |
| 27395 | Speartex Grain Company | Gruver, TX 79040 | Oil & Gas Operator | Nov 2025 |
| 27396 | Speartip Energy, LLC | Katy, TX 77450 | Oil Operator | Nov 2025 |
| 27397 | Specht Farms | Piqua, KS 66761 | Oil Operator | Nov 2009 |
| 27398 | Specht Oil | Iola, KS 66749 | Oil Operator | Mar 1998 |
| 27399 | Special Energy Corp. | Stillwater, OK 74076 | Oil & Gas Operator | Nov 2025 |
| 27400 | Special JHR Corp | Bridgeville, PA 15017 | Oil & Gas Operator | Nov 2025 |