| 27201 | Southstar Energy Corporation | Ardmore, OK 73401 | Gas Operator | Aug 1990 |
| 27202 | Southstar Oil And Gas Inc | Andover, KS 67002-0123 | Oil & Gas Operator | Jul 2020 |
| 27203 | Southstone Energy, LLC | Austin, TX 78735 | Oil Operator | Nov 2024 |
| 27204 | Southwell Russell C | Warren, PA 16365-3686 | Oil & Gas Operator | Dec 2022 |
| 27205 | Southwell William R | Warren, PA 16365-1259 | Oil & Gas Operator | Dec 2017 |
| 27206 | Southwest Energy Devel.,Inc. | Sugar Land, TX 77478 | Oil & Gas Operator | Jul 2007 |
| 27207 | Southwest Energy Development Inc | Bison, OK 73720 | Oil & Gas Operator | Aug 2024 |
| 27208 | Southwest Energy LP | Houston, TX 77002 | Oil & Gas Operator | Aug 2024 |
| 27209 | Southwest Exploration Company | Oklahoma City, OK 73132-2230 | Oil & Gas Operator | Jun 2017 |
| 27210 | Southwest Gas Producing Co Inc | | Oil & Gas Operator | Nov 1994 |
| 27211 | Southwest Gas St | | Oil & Gas Operator | Dec 1981 |
| 27212 | Southwest Gas Storage Company | | Gas Operator | Jul 2024 |
| 27213 | Southwest Gas Systems, Inc. | Spring, TX 77379 | Oil & Gas Operator | Nov 2024 |
| 27214 | Southwest Gathering Company | Alice, TX 78332 | Oil & Gas Operator | Nov 2024 |
| 27215 | Southwest General Dev., Inc. | | Oil & Gas Operator | Dec 2003 |
| 27216 | Southwest Land & Minerals, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Aug 2003 |
| 27217 | Southwest Loop 1604, LTD. | San Antonio, TX 78209 | Oil Operator | Sep 2022 |
| 27218 | Southwest Mississippi Oil & Gas, LLC. | | Oil Operator | Aug 2024 |
| 27219 | Southwest Oil & Land, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Dec 1999 |
| 27220 | Southwest Oil Properties, Inc. | | Oil & Gas Operator | Feb 1996 |
| 27221 | Southwest Operating Company | Overland Park, KS 66212 | Oil & Gas Operator | Mar 2012 |
| 27222 | Southwest Operating Inc. | | Oil & Gas Operator | Jul 2024 |
| 27223 | Southwest Operating, Inc.-Tyler | Tyler, TX 75701 | Oil & Gas Operator | Nov 2024 |
| 27224 | Southwest Petroleum | San Antonio, TX 78253 | Oil & Gas Operator | Nov 2024 |
| 27225 | Southwest Petroleum Corp | Drumright, OK 74030 | Oil & Gas Operator | Mar 2018 |
| 27226 | Southwest Petroleum Oil & Gas Explor LLC | San Bernardino, CA 92404-1010 | Oil & Gas Operator | Jun 2022 |
| 27227 | Southwest Production Co | Richardson, TX BADADDR | Oil & Gas Operator | Apr 1997 |
| 27228 | Southwest Resources, Inc. | Brenham, TX 77834 | Oil & Gas Operator | Nov 2024 |
| 27229 | Southwest Rig Service | | Oil & Gas Operator | Nov 1998 |
| 27230 | Southwest Royalties Inc | Midland, TX 79710 | Oil & Gas Operator | Nov 2024 |
| 27231 | Southwest-Operating | Penwell, TX 79776 | Oil & Gas Operator | Nov 2024 |
| 27232 | Southwestern Electric Power Co | Dallas, TX 75266 | Oil & Gas Operator | Dec 1989 |
| 27233 | Southwestern Energy Prod Co | Houston, TX 77032 | Oil & Gas Operator | Jun 2015 |
| 27234 | Southwestern Exploration Consultants Inc | Oklahoma City, OK 73118-1116 | Oil & Gas Operator | Sep 2024 |
| 27235 | Southwestern Inc | Hobbs, NM 88240 | Oil Operator | Oct 2009 |
| 27236 | Southwestern Production Corporation | Lakewood, CO 80228 | Oil & Gas Operator | Sep 2024 |
| 27237 | Southwind Consulting | Pratt, KS 67124 | Oil Operator | Oct 1997 |
| 27238 | Southwind Exploration, LLC | Venice, FL 34293 | Oil & Gas Operator | Sep 2003 |
| 27239 | Southwind Oil & Gas LLC | | Oil & Gas Operator | Dec 2023 |
| 27240 | Southwind Petroleum Corp. | Wichita, KS 67203 | Oil & Gas Operator | Jun 2022 |
| 27241 | Sovereign Eagle, LLC | Roswell, NM 88202 | Oil & Gas Operator | Jul 2018 |
| 27242 | Sovereign Energy Corp. | | Oil Operator | Dec 2001 |
| 27243 | Sovereign Energy LLC | | Oil & Gas Operator | Sep 2011 |
| 27244 | Sovereign Operating Company LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2016 |
| 27245 | Sovereign Petroleum Company, LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Jul 2013 |
| 27246 | Sowers William & Sara | Blue Rock, OH 43720 | Oil Operator | Dec 2022 |
| 27247 | Sowle Exploratio | | Oil Operator | Aug 1986 |
| 27248 | Sowle Explorations | | Oil Operator | Dec 2002 |
| 27249 | Sozo Natural Resources LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2024 |
| 27250 | SP Energy Development Company | Seattle, WA 98101-3277 | Oil & Gas Operator | Mar 2015 |
| 27251 | Space Production Inc. | Monahans, TX 79756 | Oil & Gas Operator | Nov 2024 |
| 27252 | Spacht, James W. & Shelly F | Ripley, NY 14775 | Gas Operator | Dec 2023 |
| 27253 | Spade Energy L.L.C. | Wichita Falls, TX 76310 | Gas Operator | Nov 2024 |
| 27254 | Spain Oil Company | Somerset, TX 78069 | Oil & Gas Operator | Nov 2024 |
| 27255 | Spalding Energy, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Nov 2024 |
| 27256 | Spalsbury, Arthur L | Hays, KS 67601 | Oil Operator | Aug 2001 |
| 27257 | Spark'S Energy Inc | Perry, OK 73077 | Oil & Gas Operator | Nov 2014 |
| 27258 | Sparkman Energy, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Nov 2024 |
| 27259 | Sparkman Rodger E | Jenks, OK 74037-0267 | Oil Operator | Sep 2018 |
| 27260 | Sparks Daniel M | Chickasha, OK 73023-1435 | Oil & Gas Operator | Apr 2014 |
| 27261 | Sparks Greg | Afton, OK 74331 | Oil & Gas Operator | Sep 2024 |
| 27262 | Sparks Harold | Radnor, OH 43066 | Oil & Gas Operator | Dec 1987 |
| 27263 | Sparks Mick Oil Company Inc | Jennings, OK 74038-0250 | Oil & Gas Operator | Aug 2024 |
| 27264 | Sparks Petroleum Company | Oklahoma City, OK 73128 | Oil & Gas Operator | Mar 1998 |
| 27265 | Sparks Resources Inc | Bristow, OK 74010 | Oil & Gas Operator | Sep 2024 |
| 27266 | Sparks, Pearlman E | Mazie, KY 41160 | Oil Operator | Dec 2015 |
| 27267 | Sparks, Sidney A., Trustee | Alice, TX 78332 | Oil & Gas Operator | Jun 1996 |
| 27268 | Sparlin J L | Oklahoma City, OK 73156-1446 | Oil Operator | Sep 2024 |
| 27269 | Sparrow Oil & Gas LLC | | Oil & Gas Operator | Oct 2024 |
| 27270 | Sparrow Operating LLC | Comanche, OK 73529-9747 | Oil Operator | Aug 2024 |
| 27271 | Sparta Energy Corp | Oak Brook, IL 60521 | Oil & Gas Operator | Dec 1985 |
| 27272 | Sparta Energy LLC | Edmond, OK 73083-8158 | Oil & Gas Operator | May 2020 |
| 27273 | Sparta Exploration LLC | Houston, TX 77279 | Oil & Gas Operator | Nov 2024 |
| 27274 | Spartagus Corporation | Grand Saline, TX 75140 | Oil & Gas Operator | Sep 2004 |
| 27275 | Spartan Oil Corporation | Abilene, TX 79601 | Oil & Gas Operator | Aug 2003 |
| 27276 | Spartan Operating Company, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Feb 2013 |
| 27277 | Spartan Petroleum Corporation | Houston, TX 77079 | Oil & Gas Operator | Oct 1987 |
| 27278 | Spartan Resources LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Sep 2024 |
| 27279 | Spartan Royalties, LLC | | Oil Operator | Jun 2024 |
| 27280 | SPC Resources, LLC | Midland, TX 79701 | Oil & Gas Operator | Feb 2024 |
| 27281 | Spear Production Company, Inc. | Shreveport, LA 71161 | Oil Operator | Nov 2024 |
| 27282 | Spearco Oil | Electra, TX 76360 | Oil & Gas Operator | Aug 2003 |
| 27283 | Spearpoint Energy LLC | Seminole, OK 74818-1247 | Oil Operator | Jun 2015 |
| 27284 | Spears Terry | Osage, OK 74054 | Oil Operator | Aug 2024 |
| 27285 | Speartex Grain Company | Gruver, TX 79040 | Oil & Gas Operator | Nov 2024 |
| 27286 | Specht Farms | Piqua, KS 66761 | Oil Operator | Nov 2009 |
| 27287 | Specht Oil | Iola, KS 66749 | Oil Operator | Mar 1998 |
| 27288 | Special Energy Corporation | Stillwater, OK 74076 | Oil & Gas Operator | Nov 2024 |
| 27289 | Special JHR Corp | Bridgeville, PA 15017 | Oil & Gas Operator | Nov 2024 |
| 27290 | Specialized Technological Threading, Inc., | | Oil & Gas Operator | Oct 2019 |
| 27291 | Speco Oil Company | | Oil & Gas Operator | Feb 1980 |
| 27292 | Spectral Oil & Gas Corporation | Humble, TX 77338 | Oil Operator | Nov 2024 |
| 27293 | Spectrum Energy Inc | Scottsdale, AZ 85257 | Oil & Gas Operator | Oct 2003 |
| 27294 | Spectrum Field Services Inc | Tulsa, OK 74136-3400 | Oil & Gas Operator | Jan 2004 |
| 27295 | Spectrum Oil Company | Irving, TX 75063 | Oil & Gas Operator | May 2013 |
| 27296 | Spectrum Oil Corporation | Marietta, OH 45750 | Oil & Gas Operator | Dec 1993 |
| 27297 | Speed James F | Ada, OK 74821-1221 | Oil & Gas Operator | Nov 2009 |
| 27298 | Speed, F. Michael, Trustee | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Aug 1998 |
| 27299 | Speedy Well Service | | Oil & Gas Operator | Jul 2024 |
| 27300 | Speegle Oil And Gas Company | Longview, TX 75605 | Oil & Gas Operator | Nov 2024 |