| 201 | Mid-Con Central Expl Co | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2014 |
| 202 | Mid-Con Energy Operating, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | May 2020 |
| 203 | Mid-Con Energy Operating, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2024 |
| 204 | Midstate Oil & Gas Company | Shawnee, OK 74802-1807 | Oil & Gas Operator | Dec 2023 |
| 205 | Moore Richard L | Morris, OK 74445 | Oil Operator | Aug 2013 |
| 206 | Morgan Energy Corporation | Englewood, CO 80110 | Oil & Gas Operator | Mar 2006 |
| 207 | MT Energy LLC | Waskom, TX 75692 | Oil & Gas Operator | Apr 2024 |
| 208 | Mud Operations Inc | Ames, OK 73718-9501 | Oil & Gas Operator | Jan 2024 |
| 209 | Mustang Fuel Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Jan 2024 |
| 210 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 211 | Natural Gas Pipeline Co Of Am LLC | Downers Grove, IL 60515-3708 | Oil & Gas Operator | Mar 2015 |
| 212 | Nelson Exploration Corporation | | Oil & Gas Operator | Dec 2023 |
| 213 | Nemaha Environmental Services LLC | Enid, OK 73703 | Oil Operator | Dec 2023 |
| 214 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 215 | Nondorf Oil & Gas Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2008 |
| 216 | Northbrook Oil & Gas Co LLC | Norman, OK 73072 | Oil & Gas Operator | Nov 2014 |
| 217 | Northbrook Oil & Gas Company | Norman, OK 73070-4916 | Oil & Gas Operator | Jun 2016 |
| 218 | O'Neal Oil & Gas Co | Fort Worth, TX 76107-1479 | Oil & Gas Operator | Jan 2024 |
| 219 | Oklahoma & Northwestern Co. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 1997 |
| 220 | Oklahoma Liquid Resources Inc | Owasso, OK 74055-0841 | Oil & Gas Operator | Dec 2023 |
| 221 | Oklahoma Oil & Gas MGMT Inc | | Oil & Gas Operator | Dec 2023 |
| 222 | Oklahoma Petroleum Allies LLC | Ardmore, OK 73401 | Oil Operator | Oct 2023 |
| 223 | Otc Petroleum Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Mar 2015 |
| 224 | Ovintiv Mid-Continent Inc. | The Woodlands, TX 77380-2764 | Oil & Gas Operator | Jan 2024 |
| 225 | P & M Drilling Company Inc | Depew, OK 74028 | Oil & Gas Operator | Dec 2004 |
| 226 | Pacific Enterprise Oil Co USA | Los Angeles, CA 90071-2005 | Oil & Gas Operator | Aug 2012 |
| 227 | Paramount Petroleum Corp | Dallas, TX 75374 | Oil Operator | Dec 2000 |
| 228 | Parker & Parsley Dev Co | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 229 | Parrish Jr W F | Ardmore, OK 73401-2941 | Oil & Gas Operator | Dec 2023 |
| 230 | PBT Enterprises Inc | Garber, OK 73738-0262 | Oil & Gas Operator | May 2023 |
| 231 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 232 | Petro Warrior LLC | Wichita, KS 67201-3399 | Oil & Gas Operator | Jan 2024 |
| 233 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 234 | Petroleum Exploration Company LTD LP | | Oil & Gas Operator | Jan 2024 |
| 235 | Pickelsimer Kenny | Wilson, OK 73463-6502 | Oil & Gas Operator | Aug 2014 |
| 236 | Plains Liquids Transport Inc | Houston, TX 77002 | Oil & Gas Operator | May 1996 |
| 237 | Pletcher Oil Limited Liability Company | Ardmore, OK 73401 | Oil & Gas Operator | Jan 2024 |
| 238 | Positive Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 239 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2024 |
| 240 | Primary Natural Resources Inc. | Tulsa, OK 74136-6351 | Oil & Gas Operator | Mar 2023 |
| 241 | Primexx Operating Corporation | Dallas, TX 75206 | Oil & Gas Operator | Dec 2023 |
| 242 | Prospective Investment & Trading | Scottsdale, AZ 85261-4190 | Oil & Gas Operator | Jun 2016 |
| 243 | Proven Reserves Management, Inc. | Dallas, TX 75370 | Oil & Gas Operator | Jan 2024 |
| 244 | Psa Inc | Chandler, OK 74834-4222 | Oil & Gas Operator | Jan 2024 |
| 245 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2023 |
| 246 | Quail Creek Oil Corporation | Houston, TX 77024 | Oil & Gas Operator | Apr 2024 |
| 247 | Quail Creek Petro MGMT Corp | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2013 |
| 248 | Questar Energy Trading | Salt Lake City, UT 84145-0601 | Oil & Gas Operator | Mar 2020 |
| 249 | Questar Explor & Prod Co | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2017 |
| 250 | R & H LLC | Ardmore, OK 73401-6329 | Oil & Gas Operator | Mar 2015 |
| 251 | R C Taylor Operating Company LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Jan 2024 |
| 252 | R D T Properties | Tulsa, OK 74105-7122 | Oil & Gas Operator | Sep 2017 |
| 253 | R L Clampitt & Associates LLC | Bartlesville, OK 74006-3313 | Oil & Gas Operator | Jan 2024 |
| 254 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 255 | Range Production Company, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2023 |
| 256 | Red Hawk Disposal LLC | | Oil Operator | Jun 2023 |
| 257 | Red Rocks Oil & Gas Operating LLC | | Oil & Gas Operator | Jan 2024 |
| 258 | Reid Williams Operating Inc | Shreveport, LA 71106-6223 | Oil & Gas Operator | Dec 2023 |
| 259 | Richardson WM S | Duncan, OK 73533 | Oil Operator | Jun 2013 |
| 260 | Rio Petroleum, Inc. | Amarillo, TX 79102 | Oil & Gas Operator | Apr 2024 |
| 261 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 262 | RJ Williams Oil & Gas LLC | Ardmore, OK 73402-1931 | Oil & Gas Operator | Dec 2023 |
| 263 | Royal Oaks Petroleum Corp | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2001 |
| 264 | Rozell Harold Dba Roundup Oil LLC | Springer, OK 73458 | Oil & Gas Operator | Jan 2024 |
| 265 | Russell D Meloy Oil & Gas Co | Enid, OK 73703-1623 | Oil & Gas Operator | Jan 2024 |
| 266 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2024 |
| 267 | Salty Dog Disposal LLC | | Oil Operator | Feb 2024 |
| 268 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 269 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 270 | Sanook Inc | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Jan 2007 |
| 271 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 272 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 273 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 274 | Seals And Brown Oil Operating | Norman, OK 73072-3020 | Oil & Gas Operator | Jan 2024 |
| 275 | Seals Oil Company | Fox, OK 73435-0222 | Oil & Gas Operator | Nov 2011 |
| 276 | Shepard James | Beggs, OK 74421-0899 | Oil & Gas Operator | Oct 2023 |
| 277 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Apr 2024 |
| 278 | Smith Conley P Operating Co | Eglewood, CO 80112-3640 | Oil & Gas Operator | Jun 2000 |
| 279 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 280 | Sorrels J R Dba Cheyenne Oil Properties | Ponca City, OK 74602-0067 | Oil & Gas Operator | Jul 2022 |
| 281 | Southern Oklahoma Production | | Oil Operator | Jan 2024 |
| 282 | Special Energy Corporation | Stillwater, OK 74076 | Oil & Gas Operator | Apr 2024 |
| 283 | Spectrum Field Services Inc | Tulsa, OK 74136-3400 | Oil & Gas Operator | Jan 2004 |
| 284 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Jan 2024 |
| 285 | Spring Operating Company | Edmond, OK 73083-2048 | Oil & Gas Operator | Jan 2024 |
| 286 | SSB Production LC | Ardmore, OK 73402-0998 | Oil & Gas Operator | Jan 2024 |
| 287 | Staghorn Resources, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2015 |
| 288 | Star Resources LLC | Englewood, CO 80155-5185 | Oil & Gas Operator | Dec 2013 |
| 289 | Stargas Co | Tulsa, OK 74136-5407 | Oil & Gas Operator | Aug 2013 |
| 290 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2024 |
| 291 | Strike Energy Corporation | Blackwell, OK 74631 | Oil & Gas Operator | Apr 2023 |
| 292 | Strike Energy LLC | Marietta, OK 73448-0365 | Oil Operator | Jan 2024 |
| 293 | Sunoco Partners MKT & Terminal | Tulsa, OK 74102-2039 | Oil & Gas Operator | Jan 2019 |
| 294 | Superior Saltwater Disposal LLC | | Oil & Gas Operator | Dec 2016 |
| 295 | T & J Oil Production, L.L.C. | Lone Grove, OK 73443 | Oil & Gas Operator | Dec 2023 |
| 296 | T & S Mud Disposal LLC | Lindsay, OK 73052-0754 | Oil Operator | Mar 2013 |
| 297 | T E F Inc | Madill, OK 73446-6656 | Oil & Gas Operator | Jul 2023 |
| 298 | T G & S Oil | Marietta, OK 73448-0346 | Oil & Gas Operator | Jan 2024 |
| 299 | Targa Pipeline Mid-Continent LLC | Sulphur, LA 70665 | Oil & Gas Operator | Jun 2018 |
| 300 | Tat, Inc. | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2023 |