| 5201 | Royal Oaks Petroleum Corp | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2001 |
| 5202 | Royal Oil & Gas Corp. | Indiana, PA 15701 | Oil & Gas Operator | Apr 2014 |
| 5203 | Royal Petroleum | Baytown, TX 77521 | Oil & Gas Operator | Aug 2003 |
| 5204 | Royal Petroleum Corp. | Dallas, TX 75229 | Oil & Gas Operator | Jul 2024 |
| 5205 | Royale Energy Inc | San Diego, CA 92108-4518 | Oil & Gas Operator | Sep 2024 |
| 5206 | Royalty Energy Development LLC | Edmond, OK 73003 | Oil & Gas Operator | Sep 2024 |
| 5207 | Royalty Petroleum Company | Oklahoma City, OK 73120 | Gas Operator | Feb 2002 |
| 5208 | Roye Realty & Developing Inc | Stigler, OK 74462-0148 | Gas Operator | Dec 2004 |
| 5209 | Rozell Harold Dba Roundup Oil LLC | Springer, OK 73458 | Oil & Gas Operator | Sep 2024 |
| 5210 | Rozen H H | | Oil Operator | Aug 2022 |
| 5211 | RPM Oilfield Services LLC | Lindsay, OK 73052-8005 | Oil & Gas Operator | Aug 2024 |
| 5212 | RR Oil Well Operations LLC | Ringwood, OK 73768 | Oil & Gas Operator | Sep 2024 |
| 5213 | RTB Oil Inc | Crescent, OK 73028-0686 | Oil Operator | May 2016 |
| 5214 | RTC Resources, LLP | Weatherford, OK 73096 | Oil & Gas Operator | Nov 2024 |
| 5215 | RTD Inc | Bartlesville, OK 74006 | Oil Operator | Jan 1995 |
| 5216 | Rue Johnny B | Duncan, OK 73533-2019 | Oil Operator | Aug 2024 |
| 5217 | Ruh Oil Company | Collinsville, OK 74021 | Oil & Gas Operator | Sep 2024 |
| 5218 | Rumley Robert A & Associates | Tulsa, OK 74135-1907 | Oil Operator | Jul 2024 |
| 5219 | Rupe Oil Company, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jul 2024 |
| 5220 | Rush Creek Operating LLC | McKinney, TX 75070 | Oil & Gas Operator | Nov 2024 |
| 5221 | Rush-Andrus Engineering | Royse City, TX 75189 | Oil & Gas Operator | Feb 2022 |
| 5222 | Russell Carl G | Coweta, OK 74429 | Oil & Gas Operator | Mar 2015 |
| 5223 | Russell D Meloy Oil & Gas Co | Enid, OK 73703-1623 | Oil & Gas Operator | Aug 2024 |
| 5224 | Russell Oil Company | Haskell, OK 74436 | Oil & Gas Operator | Apr 2014 |
| 5225 | Russell, John R | | Oil Operator | Sep 2024 |
| 5226 | Rust Oil Corp. | Fort Worth, TX 76108 | Oil & Gas Operator | Nov 2024 |
| 5227 | Rustler Energy LLC | Lindsay, OK 73052 | Oil & Gas Operator | Aug 2024 |
| 5228 | RW Oil & Gas LLC | Lamont, OK 74643 | Oil & Gas Operator | Sep 2024 |
| 5229 | Rwit Company Inc | Tulsa, OK 74131-4255 | Oil & Gas Operator | Jul 2018 |
| 5230 | Ry-Co Petroleum | Wann, OK 74083-2052 | Oil & Gas Operator | Feb 2017 |
| 5231 | Ryan Petroleum Corp | Oklahoma City, OK 73102-9024 | Oil & Gas Operator | Aug 1994 |
| 5232 | Ryan R Roberts Cattle Co LLC | Sand Springs, OK 74063 | Oil Operator | Aug 2024 |
| 5233 | Ryder Scott Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2005 |
| 5234 | S & B Oil Company | Wyonna, OK 74084 | Oil & Gas Operator | Nov 2005 |
| 5235 | S & C Resources Inc | Cleveland, OK 74020 | Oil Operator | Aug 2024 |
| 5236 | S & F Energy LLC | Ponca City, OK 74601-1618 | Oil Operator | Aug 2024 |
| 5237 | S & G Operating LLC | McLoud, OK 74851 | Oil & Gas Operator | Sep 2024 |
| 5238 | S & H Tank Service Of Okla | Lindsay, OK 73052 | Oil & Gas Operator | Mar 2017 |
| 5239 | S & J Oil | Hays, KS 67601 | Oil & Gas Operator | Aug 2024 |
| 5240 | S & J Oil Company | Ellinwood, KS 67526 | Oil Operator | Jun 2000 |
| 5241 | S & J Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2015 |
| 5242 | S & K Oil Company | Tulsa, OK 74101 | Oil & Gas Operator | Jul 1994 |
| 5243 | S & M Production Inc | Pawnee, OK 74058 | Oil & Gas Operator | Aug 2023 |
| 5244 | S & S Energy | Englewood, CO 80112 | Oil & Gas Operator | Mar 2015 |
| 5245 | S & S Oil | Ponca City, OK 74601 | Oil & Gas Operator | Dec 2009 |
| 5246 | S & S Oil & Gas Corporation | Okemah, OK 74859-0659 | Oil & Gas Operator | Sep 2014 |
| 5247 | S & S Oil & Gas LLC | Skiatook, OK 74070 | Oil & Gas Operator | Jul 2016 |
| 5248 | S & S Oil Company | Electra, TX 76360 | Oil & Gas Operator | Nov 2024 |
| 5249 | S & S Production Company | Walters, OK 73572-1451 | Oil Operator | Jul 2024 |
| 5250 | S & S Star Operating LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Jun 2023 |
| 5251 | S & T SWD LLC | Clinton, OK 73601-3130 | Oil Operator | Feb 2017 |
| 5252 | S & W Engine Supply | Oklahoma City, OK 73107 | Oil Operator | Jun 2003 |
| 5253 | S & W Engine Supply Inc | Oklahoma City, OK 73143 | Oil Operator | Jan 2000 |
| 5254 | S & W Transports Inc | Velma, OK 73491 | Oil Operator | Jul 2024 |
| 5255 | S A C Operating Inc | Woodward, OK 73802-1749 | Oil & Gas Operator | Jan 1999 |
| 5256 | S H Production LLC | Tulsa, OK 74130-1418 | Oil & Gas Operator | Sep 2024 |
| 5257 | S M Brothers Investments LLC | Denver, CO 80210-6059 | Oil Operator | Aug 2024 |
| 5258 | S N D Energy Company, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Nov 2024 |
| 5259 | S O S Recovery Inc | Enid, OK 73703-2403 | Oil & Gas Operator | Jul 2023 |
| 5260 | S R W Oil | Laverne, OK 73848 | Oil & Gas Operator | Sep 2024 |
| 5261 | S T Industries Inc | Drumright, OK 74030 | Oil & Gas Operator | Mar 2011 |
| 5262 | S/H Petroleum Corporation | Hennessey, OK 73742-0477 | Oil & Gas Operator | Feb 2016 |
| 5263 | Sabco Operating Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2018 |
| 5264 | Saber Industries LP | Dallas, TX 75254 | Oil Operator | Mar 2023 |
| 5265 | Sabine Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 5266 | Sabine Oil & Gas LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 5267 | Sabine Production Company | | Oil & Gas Operator | Oct 1990 |
| 5268 | Sabos George U | Tulsa, OK 74170 | Oil & Gas Operator | Jan 2013 |
| 5269 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Nov 2024 |
| 5270 | Sac & Fox Nation | Stroud, OK 74079 | Oil & Gas Operator | Dec 2023 |
| 5271 | Safe Earth Management Inc. | Hammond, OK 73650 | Oil Operator | Nov 2021 |
| 5272 | Safe Earth Management LLC | Hammon, OK 73650 | Oil Operator | Sep 2024 |
| 5273 | Safire Resources LLC | Bartlesville, OK 74005 | Oil & Gas Operator | Sep 2024 |
| 5274 | Sage Drilling Co | Wichita, KS 67202 | Oil & Gas Operator | Nov 1998 |
| 5275 | Sage Energy Company | San Antonio, TX 78215 | Oil & Gas Operator | Nov 2024 |
| 5276 | Sage NR Ok LLC | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2024 |
| 5277 | Sagely Floyd E Properties LTD | Fort Smith, AR 72917-0308 | Gas Operator | Jan 2015 |
| 5278 | Saiber Michael L & Lora L | Saxonburg, PA 16056 | Oil Operator | Mar 1997 |
| 5279 | Sajac Energy Company LLC | Duncan, OK 73533 | Oil & Gas Operator | Sep 2024 |
| 5280 | Sallee Oil Corporation | Collinsville, OK 74021 | Oil & Gas Operator | Sep 2024 |
| 5281 | Salt Creek Energy Company LLC | Shawnee, OK 74802-1505 | Oil & Gas Operator | Aug 2024 |
| 5282 | Salt Creek Production, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Nov 2024 |
| 5283 | Salt Fork Producers Inc | Pond Creek, OK 73766 | Oil & Gas Operator | Jan 1995 |
| 5284 | Salt Plain Pipeline Corp | Edmond, OK 73013 | Oil & Gas Operator | Jun 2010 |
| 5285 | Salty Dog Disposal LLC | Cement, OK 73017 | Oil Operator | Sep 2024 |
| 5286 | Sam W Mays Jr LLC | Eureka, KS 67045 | Oil & Gas Operator | Apr 2018 |
| 5287 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 5288 | Samhill LLC | Tonkawa, OK 74653-5533 | Oil & Gas Operator | Aug 2024 |
| 5289 | Samis Oil Company, Inc. | Oklahoma City, OK 73156 | Oil & Gas Operator | Sep 2000 |
| 5290 | Samson Exploration LLC | Tulsa, OK 74101 | Oil & Gas Operator | Sep 2024 |
| 5291 | Samson Gas Producing Company | Tulsa, OK 74103 | Oil & Gas Operator | May 2001 |
| 5292 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 5293 | Samson Oil Company | | Oil & Gas Operator | Feb 2001 |
| 5294 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2024 |
| 5295 | Samuel Joe L | Tulsa, OK 74135-7805 | Oil & Gas Operator | Jan 2001 |
| 5296 | San Francisco-Okla Pet Ex Inc | | Oil & Gas Operator | Apr 2014 |
| 5297 | San Marco Petroleum Inc | Denver, CO 80293 | Oil & Gas Operator | Jul 2024 |
| 5298 | Sananco Energy Corp | Naples, FL 33941 | Oil & Gas Operator | Jul 2013 |
| 5299 | Sanchez-O'Brien Oil & Gas Corp | Houston, TX 77057 | Oil & Gas Operator | May 1998 |
| 5300 | Sand Boy Production Company | Bartlesville, OK 74003-9273 | Oil & Gas Operator | Sep 2024 |