| 5201 | S & W Engine Supply Inc | Oklahoma City, OK 73143 | Oil Operator | Jan 2000 |
| 5202 | S & W Transports Inc | Velma, OK 73491 | Oil Operator | Nov 2025 |
| 5203 | S A C Operating Inc | Woodward, OK 73802-1749 | Oil & Gas Operator | Jan 1999 |
| 5204 | S H Production LLC | Tulsa, OK 74130-1418 | Oil & Gas Operator | Oct 2025 |
| 5205 | S J Murphy Oil And Gas Inc | | Oil & Gas Operator | Dec 2025 |
| 5206 | S M Brothers Investments LLC | Denver, CO 80210-6059 | Oil Operator | Dec 2025 |
| 5207 | S N D Energy Company, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Mar 2026 |
| 5208 | S O S Recovery Inc | Enid, OK 73703-2403 | Oil & Gas Operator | Jul 2023 |
| 5209 | S R W Oil | Laverne, OK 73848 | Oil & Gas Operator | Sep 2025 |
| 5210 | S T Industries Inc | Drumright, OK 74030 | Oil & Gas Operator | Mar 2011 |
| 5211 | S/H Petroleum Corporation | Hennessey, OK 73742-0477 | Oil & Gas Operator | Feb 2016 |
| 5212 | Sabco Operating Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2018 |
| 5213 | Saber Industries LP | Dallas, TX 75230 | Oil Operator | Dec 2024 |
| 5214 | Sabine Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2026 |
| 5215 | Sabine Oil & Gas LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 5216 | Sabos George U | Tulsa, OK 74170 | Oil & Gas Operator | Jan 2013 |
| 5217 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 2026 |
| 5218 | Sac & Fox Nation | | Oil & Gas Operator | Jul 2025 |
| 5219 | Safe Earth Management Inc | | Oil Operator | Nov 2021 |
| 5220 | Safe Earth Management LLC | Hammon, OK 73650 | Oil Operator | Nov 2025 |
| 5221 | Safire Resources LLC (Osage Only) | | Oil & Gas Operator | Dec 2025 |
| 5222 | Sage Drilling Co Inc | Wichita, KS 67202 | Oil & Gas Operator | Nov 1998 |
| 5223 | Sage Energy Company | San Antonio, TX 78215 | Oil & Gas Operator | Mar 2026 |
| 5224 | Sage NR Ok LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2026 |
| 5225 | Sagely Floyd E Properties LTD | Fort Smith, AR 72917-0308 | Gas Operator | Jan 2015 |
| 5226 | Saiber Michael L & Lora L | Saxonburg, PA 16056 | Oil Operator | Mar 1997 |
| 5227 | Sajac Energy Company LLC | Duncan, OK 73533 | Oil & Gas Operator | Dec 2025 |
| 5228 | Sallee Oil Corporation | Collinsville, OK 74021 | Oil & Gas Operator | Jan 2026 |
| 5229 | Salt Creek Energy Company LLC | Shawnee, OK 74802-1505 | Oil & Gas Operator | Dec 2025 |
| 5230 | Salt Creek Production, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Mar 2026 |
| 5231 | Salt Fork Producers Inc | Pond Creek, OK 73766 | Oil & Gas Operator | Jan 1995 |
| 5232 | Salty Dog Disposal LLC | Cement, OK 73017 | Oil Operator | Feb 2026 |
| 5233 | Sam W Mays Jr LLC | Eureka, KS 67045 | Oil & Gas Operator | Apr 2018 |
| 5234 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 5235 | Samhill LLC | Tonkawa, OK 74653-5533 | Oil & Gas Operator | Dec 2025 |
| 5236 | Samis Oil Company, Inc. | Oklahoma City, OK 73156 | Oil & Gas Operator | Sep 2000 |
| 5237 | Samson Exploration LLC | Tulsa, OK 74101 | Oil & Gas Operator | Jan 2026 |
| 5238 | Samson Gas Producing Company | Tulsa, OK 74103 | Oil & Gas Operator | May 2001 |
| 5239 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 5240 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2025 |
| 5241 | Samuel Joe L | Tulsa, OK 74135-7805 | Oil & Gas Operator | Jan 2001 |
| 5242 | San Francisco-Okla Pet Ex Inc | | Oil & Gas Operator | Apr 2014 |
| 5243 | San Marco Petroleum Inc | Denver, CO 80293 | Oil & Gas Operator | Dec 2025 |
| 5244 | Sananco Energy Corp | Naples, FL 33941 | Oil & Gas Operator | Jul 2013 |
| 5245 | Sanchez-O'Brien Oil & Gas Corp | Houston, TX 77057 | Oil & Gas Operator | May 1998 |
| 5246 | Sand Boy Production Company | Bartlesville, OK 74003-9273 | Oil & Gas Operator | Jan 2025 |
| 5247 | Sand Creek Resources LLC | Woodward, OK 73801-5222 | Oil & Gas Operator | Jan 2026 |
| 5248 | Sand Point LLC | Oklahoma City, OK 73132 | Oil & Gas Operator | Dec 2020 |
| 5249 | Sand Point Production Inc | Oklahoma City, OK 73172 | Oil & Gas Operator | Dec 2025 |
| 5250 | Sand Resources LLC | Norman, OK 73072-4805 | Oil & Gas Operator | Aug 2012 |
| 5251 | Sand Springs Oil & Gas Co. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2026 |
| 5252 | Sandia Operating Corp. | San Antonio, TX 78270 | Oil & Gas Operator | May 2010 |
| 5253 | Sandler Raymond C | Los Angeles, CA 90067 | Oil Operator | Dec 1999 |
| 5254 | Sandlot Oil & Gas LLC | Gruver, TX 79040 | Oil & Gas Operator | Mar 2026 |
| 5255 | Sandpoint Operating, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Nov 2025 |
| 5256 | Sandra Corporation (The) | Pampa, TX 79066-2474 | Gas Operator | Oct 1996 |
| 5257 | Sandra Turner Dba Grand Lake Resources | Hennessey, OK 73742 | Oil & Gas Operator | Dec 2025 |
| 5258 | Sandridge Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2018 |
| 5259 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Mar 2026 |
| 5260 | Sandrock Energy LLC | Luther, OK 73054 | Oil & Gas Operator | Dec 2025 |
| 5261 | Sandstone Hills Energy Inc | Seminole, OK 74818-1938 | Oil & Gas Operator | Sep 2014 |
| 5262 | Sandstone Resources, Inc. | Houston, TX 77043 | Oil & Gas Operator | Mar 2026 |
| 5263 | Sandy Petroleum Inc | Shawnee, OK 74801-5634 | Oil & Gas Operator | Dec 2025 |
| 5264 | Sanford & Jenkins | Henryetta, OK 74437-1411 | Oil & Gas Operator | Mar 2015 |
| 5265 | Sanford Casondra | Ada, OK 74820-4460 | Oil & Gas Operator | May 2013 |
| 5266 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2026 |
| 5267 | Sanner Jeffrey B Dba Bryant Lyn Production | Velma, OK 73491 | Oil Operator | Dec 2025 |
| 5268 | Sanner Oil Co LLC | Duncan, OK 73533 | Oil Operator | Dec 2025 |
| 5269 | Sanner Oil Company | Velma, OK 73491-0550 | Oil & Gas Operator | Jan 2014 |
| 5270 | Sanook Inc | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Jan 2007 |
| 5271 | Sanquip LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Sep 2024 |
| 5272 | Santa Fe Braun Inc | Dallas, TX 75240-6620 | Oil & Gas Operator | Mar 1995 |
| 5273 | Santa Fe Energy Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2015 |
| 5274 | Santa Fe Energy Operating Partner LP | Midland, TX 79701 | Oil & Gas Operator | Sep 2004 |
| 5275 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 5276 | Santa Fe Operating LLC | Frisco, TX 75034 | Oil & Gas Operator | Mar 2026 |
| 5277 | Santa Fe-Andover Oil Co | Tulsa, OK 74172 | Oil & Gas Operator | Sep 2000 |
| 5278 | Santa Rita Resources Inc & Subs | | Oil & Gas Operator | Mar 2015 |
| 5279 | Santo Resources Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 1998 |
| 5280 | Saqus Oil Co | Oklahoma City, OK 73107 | Oil & Gas Operator | May 2001 |
| 5281 | Sarkeys Inc | | Oil & Gas Operator | Dec 1998 |
| 5282 | Sasakwa Operating LLC | Oklahoma City, OK 73179-1902 | Oil & Gas Operator | Nov 2025 |
| 5283 | Sasser Company Inc (The) | Perkins, OK 74059-0515 | Oil & Gas Operator | Oct 2025 |
| 5284 | Savage Exploration, Inc. | San Marcos, TX 78666 | Oil & Gas Operator | Mar 2026 |
| 5285 | Savoy Energy LP | Traverse City, MI 49685-1560 | Oil & Gas Operator | Dec 2025 |
| 5286 | Saylor Weldon W | Tulsa, OK 74105-5325 | Gas Operator | Dec 1994 |
| 5287 | Sboc LLC | Hallett, OK 74034 | Oil Operator | Dec 2025 |
| 5288 | SBR Oil LLC | Ada, OK 74821 | Oil Operator | Sep 2025 |
| 5289 | Scambler Energy Group LTD Co | Colony, OK 73021 | Oil & Gas Operator | Jan 2026 |
| 5290 | Scana Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Dec 1999 |
| 5291 | Scana Petroleum Resources Inc | Houston, TX 77002 | Oil & Gas Operator | Jun 2013 |
| 5292 | Scana Production Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2005 |
| 5293 | Scarth Oil & Gas Co | Amarillo, TX 79101 | Oil & Gas Operator | Feb 1999 |
| 5294 | Scavenger Oil Company Inc | Englewood, CO 80111 | Oil & Gas Operator | Mar 2000 |
| 5295 | Schad Jeffrey M | Mannford, OK 74044-0995 | Oil Operator | Sep 2021 |
| 5296 | Schettler William D | Fletcher, OK 73541-4117 | Oil & Gas Operator | Oct 2021 |
| 5297 | Schiff & Jackson Oil Producers | Dallas, TX 75206 | Oil & Gas Operator | Dec 2025 |
| 5298 | Schlachter, David A. | Dallas, TX 75225 | Oil & Gas Operator | Apr 2015 |
| 5299 | Schmid Properties, Inc. | Hico, TX 76457 | Oil & Gas Operator | Mar 2026 |
| 5300 | Schonfield Harold Gene | Bristow, OK 74010 | Oil Operator | Mar 2015 |