| 201 | Machin & Associates, Inc. | Longview, TX 75606 | Oil & Gas Operator | Apr 2024 |
| 202 | Mackinaw Two, LLC | | Oil & Gas Operator | May 2020 |
| 203 | Macquarie Longview Acquisitions, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2008 |
| 204 | Magnolia Petrolrum Company | | Oil Operator | Aug 2005 |
| 205 | Magnum Producing, LP | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2024 |
| 206 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Feb 2024 |
| 207 | Marshall Crude Oil LLC | Crossett, AR 71635 | Oil Operator | Jan 2024 |
| 208 | Marshall, David | | Oil Operator | Oct 2021 |
| 209 | Martin, Trey Oil Company | Louann, AR 71751 | Oil Operator | Feb 2024 |
| 210 | Martin, Van Jr | | Oil & Gas Operator | Feb 2024 |
| 211 | Martinez, Carlos And Cori And McAdams, Buddy | El Dorado, AR 71730 | Oil Operator | Jan 2024 |
| 212 | Max Extract Technologies, LLC | Oklahoma City, OK 73105 | Gas Operator | Dec 2023 |
| 213 | McAlester Fuel Co | Houston, TX 77042 | Oil & Gas Operator | Jan 2010 |
| 214 | McCutchin Petroleum Corporation | Dallas, TX 75225 | Oil & Gas Operator | Apr 2024 |
| 215 | McGoldrick Oil Company | Shreveport, LA 71129 | Oil & Gas Operator | Jul 2020 |
| 216 | McGowan Working Partners, Inc. | Jackson, MS 39296 | Oil & Gas Operator | Apr 2024 |
| 217 | Medg, LLC | Stephens, AR 71764 | Oil Operator | Feb 2024 |
| 218 | Meeks, Mike | El Dorado, AR 71730 | Oil Operator | Mar 2024 |
| 219 | Merit Energy Company, LLC | Dallas, TX 75240 | Oil & Gas Operator | Jan 2024 |
| 220 | Milam Oil Corp Dba Milam Construction | El Dorado, AR 71730 | Oil & Gas Operator | Jan 2024 |
| 221 | Miller Production | Bossier City, LA 7111 | Oil & Gas Operator | Feb 2024 |
| 222 | Miller Production Co. | Tyler, TX 75701 | Oil & Gas Operator | Apr 2024 |
| 223 | Miller, R. A. Energy, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Jan 2023 |
| 224 | Mills Resource Services LLC | Hope, AR 71801 | Oil Operator | Dec 2023 |
| 225 | Mission Creek Opco, LLC | Magnolia, AR 71753 | Oil & Gas Operator | Feb 2024 |
| 226 | MMGK Arkoma, LLC | Dallas, TX 75240 | Gas Operator | Jan 2024 |
| 227 | Morgan Oil & Gas Operating LLC | Junction City, AR 71749 | Oil Operator | Mar 2024 |
| 228 | Mueller, Thomas C Inc | | Gas Operator | Dec 2004 |
| 229 | Mueller, Thomas C, Of Crawford County Inc | | Gas Operator | Dec 2004 |
| 230 | Mulberry Oil & Gas, LLC | Mulberry, AR 72947 | Gas Operator | Jan 2024 |
| 231 | Muras Energy, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Dec 2023 |
| 232 | Murphy Exploration & Production | Houston, TX 77024 | Oil Operator | Feb 2024 |
| 233 | Nantze #1 | Atlanta, TX 75551 | Oil Operator | Feb 2024 |
| 234 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 235 | Neal Resources LLC | Louann, AR 71751 | Oil Operator | Feb 2024 |
| 236 | Neg Operating LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Apr 2017 |
| 237 | Nevada Oil, LLC | El Dorado, AR 71730 | Oil & Gas Operator | Feb 2024 |
| 238 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 239 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | Apr 2024 |
| 240 | Norton Oil Company Inc | | Oil & Gas Operator | Mar 2008 |
| 241 | O'Brien Energy Company | Shreveport, LA 71136 | Oil & Gas Operator | Sep 2019 |
| 242 | O.G.P. Operating, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Apr 2024 |
| 243 | One Tec Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2011 |
| 244 | Ops Group Limited | Houston, TX 77060 | Oil & Gas Operator | Jun 2014 |
| 245 | Owen Contracting Company Inc | | Oil Operator | Apr 2007 |
| 246 | Owens, Don | | Oil Operator | Oct 2006 |
| 247 | Oxley Energy LLC | Houston, TX 77042 | Gas Operator | Dec 2023 |
| 248 | Oxley Petroleum Co | Oklahoma City, OK 73118-1044 | Oil & Gas Operator | Sep 2017 |
| 249 | Ozark Oil & Gas, Inc | | Gas Operator | May 2018 |
| 250 | P & H Vacuum Service | | Oil & Gas Operator | Jan 2024 |
| 251 | Pacific-Atlantic Oil Company, Inc. | | Oil & Gas Operator | Aug 2016 |
| 252 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2024 |
| 253 | Parks Oil, LLC | Smackover, AR 71762 | Oil Operator | Feb 2024 |
| 254 | Pathfinder Exploration LLC | Norman, OK 73069-8516 | Gas Operator | Nov 2008 |
| 255 | Patterson Oil Company, The | Eastland, TX 76448 | Oil & Gas Operator | Feb 2024 |
| 256 | Penn VIrginia MC Energy, LLC | Tulsa, OK 74119 | Gas Operator | Jul 2009 |
| 257 | Perry, James D | El Dorado, AR 71730 | Oil Operator | Feb 2024 |
| 258 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2024 |
| 259 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 260 | Petroleum Development Company | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2023 |
| 261 | Petroquest, LLC | El Dorado, AR 71730 | Oil & Gas Operator | Jan 2024 |
| 262 | Pharr, Billy W | Emerson, AR 71740 | Oil & Gas Operator | Feb 2024 |
| 263 | Phillips Energy, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2018 |
| 264 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 265 | Philmon, Doyle | Magazine, AR 72943 | Gas Operator | Jan 2024 |
| 266 | Phoenix Operating Company, Inc. | Shreveport, LA 71161 | Oil & Gas Operator | Mar 2015 |
| 267 | Pickens Company, Inc., The | Dallas, TX 75225 | Oil & Gas Operator | Feb 2024 |
| 268 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Apr 2024 |
| 269 | Ploutos, LLC | | Oil Operator | May 2021 |
| 270 | Plummer, JD Operating Co., LLC | El Dorado, AR 71730 | Oil Operator | Oct 2023 |
| 271 | Potoco, LLC | | Gas Operator | Apr 2012 |
| 272 | Preston Interests Operating, LP | | Oil Operator | Mar 2017 |
| 273 | Prosper Oil & Gas,Inc. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2024 |
| 274 | Providence Exploration & Production | | Gas Operator | Jan 2006 |
| 275 | Pruitt Tool Gas Department | | Gas Operator | Jan 2008 |
| 276 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2023 |
| 277 | Quail Oil, LLC | Stephens, AR 71764 | Oil Operator | Feb 2024 |
| 278 | Quality Operating, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Aug 2005 |
| 279 | Quanico Oil & Gas, Inc. | El Dorado, AR 71730 | Oil & Gas Operator | Apr 2024 |
| 280 | Quantum Resources Management LLC | Houston, TX 77010 | Oil & Gas Operator | Dec 2023 |
| 281 | R & T Oil Co | El Dorado, AR 71730 | Oil Operator | Feb 2009 |
| 282 | R C Operating LLC | El Dorado, AR 71730 | Oil Operator | Nov 2022 |
| 283 | R/T Production, LLC | El Dorado, AR 71730 | Oil & Gas Operator | Dec 2023 |
| 284 | Rabalais, F.W. Inc. | Fort Worth, TX 76101 | Oil & Gas Operator | Sep 2023 |
| 285 | Ram Energy LLC | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2024 |
| 286 | Rampart Resources Company, LLC | Tulsa, OK 74136 | Gas Operator | Jan 2021 |
| 287 | Ranken Energy Corporation | Edmond, OK 73013 | Oil & Gas Operator | Jan 2024 |
| 288 | Rat Oil, LLC | Stephens, AR 71764 | Oil Operator | Dec 2023 |
| 289 | Reaves Operator | Stephens, AR 71764 | Oil Operator | Feb 2024 |
| 290 | Rebel Producing, LLC | Spearsville, LA 71277 | Oil & Gas Operator | Feb 2024 |
| 291 | Red Oak Operating, LLC | Magnolia, AR 71753 | Oil & Gas Operator | Feb 2024 |
| 292 | Revere Corporation | Fort Smith, AR 72902-0908 | Oil & Gas Operator | Feb 2015 |
| 293 | Reynolds Drilling Co., Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Apr 2024 |
| 294 | Reynolds E & P, Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Apr 2024 |
| 295 | Reynolds Metals Company | | Gas Operator | Nov 2003 |
| 296 | Reynolds, Dan Company | Camden, AR 71701 | Oil Operator | Feb 2024 |
| 297 | Reynolds, J David Company | Camden, AR 71701 | Oil & Gas Operator | Feb 2024 |
| 298 | Richy Production, LLC | Stephens, AR 71764 | Oil Operator | Apr 2022 |
| 299 | Riverfront Exploration LLC | Fort Smith, AR 72901 | Gas Operator | Jan 2024 |
| 300 | Rock Creek Energy, LLC | Fort Smith, AR 72901 | Gas Operator | Jan 2024 |