| 31201 | VRK Oil And Gas, Inc. | Arlington, TX 76016 | Oil & Gas Operator | Mar 2014 |
| 31202 | VRK Operating Company Inc | Fort Worth, TX 76109-7430 | Oil & Gas Operator | Sep 1994 |
| 31203 | VSP Operating, LLC | Castle Rock, CO 80108 | Oil Operator | Dec 2025 |
| 31204 | VT Energy Partners, LLC | Andover, KS 67002 | Oil & Gas Operator | Dec 2019 |
| 31205 | VT VIstatex Energy LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 31206 | Vtex Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 31207 | VTX Energy Operating, LLC | Austin, TX 78730 | Oil & Gas Operator | Dec 2025 |
| 31208 | Vukasovich Drilling | | Oil & Gas Operator | Mar 1988 |
| 31209 | Vul-Tex Corporation | Pampa, TX 79065 | Oil & Gas Operator | Jan 2024 |
| 31210 | Vulcan Resources, LLC | Skiatook, OK 74070 | Oil Operator | Mar 2024 |
| 31211 | VVWF Oil Inc | Oklahoma City, OK 73143-7375 | Gas Operator | Feb 1994 |
| 31212 | VX Operating, LLC | Abilene, TX 79605 | Oil & Gas Operator | Dec 2025 |
| 31213 | W & C Oil & Gas | | Oil Operator | Feb 1996 |
| 31214 | W & K Oil Co. | | Oil & Gas Operator | Jun 1989 |
| 31215 | W & L Oil Co. | | Oil Operator | Aug 1995 |
| 31216 | W & T Offshore, L.L.C. | Houston, TX 77046 | Gas Operator | Jan 1999 |
| 31217 | W & T Oil Properties, Inc. | | Oil & Gas Operator | Nov 1989 |
| 31218 | W & W Oil, Inc. | Lovington, NM 88260 | Oil & Gas Operator | May 1999 |
| 31219 | W & W Prod Compa | | Oil Operator | Oct 1995 |
| 31220 | W & W Production Company, General Partnership | Chanute, KS 66720 | Oil & Gas Operator | Jun 2025 |
| 31221 | W & W Production, LLC | Wichita Falls, TX 76308 | Oil Operator | Dec 2025 |
| 31222 | W & W Properties | Westbrook, TX 79565 | Oil & Gas Operator | Aug 2018 |
| 31223 | W & W Services, Inc. | Palestine, TX 75802 | Oil & Gas Operator | Mar 2008 |
| 31224 | W 10 Holdings Inc | | Oil & Gas Operator | Dec 1998 |
| 31225 | W A Moncrief Jr | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2025 |
| 31226 | W B Hamilton Estate | Wichita Falls, TX 76301 | Oil & Gas Operator | Jan 2021 |
| 31227 | W B Osborn Oil And Gas Operations LTD | | Oil Operator | Oct 2025 |
| 31228 | W B Powers Production Serv. | | Oil Operator | Feb 1991 |
| 31229 | W B Yarborough | Hobbs, NM 88241 | Oil & Gas Operator | Nov 1995 |
| 31230 | W C Investments LTD | Salt Lake City, UT 84120 | Oil & Gas Operator | Aug 2000 |
| 31231 | W C S Inc | Pottsboro, TX 75076 | Oil & Gas Operator | Oct 2019 |
| 31232 | W C T Operating LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Sep 2025 |
| 31233 | W D L Enterprises, Inc | | Oil & Gas Operator | Apr 1983 |
| 31234 | W E Jeffers | Artesia, NM 88210 | Oil Operator | Nov 2004 |
| 31235 | W H Brininstool | Jal, NM 88252 | Oil & Gas Operator | Aug 2006 |
| 31236 | W H Patten Drilling Co | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2024 |
| 31237 | W J Sweatt | Artesoa, NM 88211 | Oil Operator | Oct 2020 |
| 31238 | W K Frost Inc | Newark, OH 43055 | Oil & Gas Operator | Dec 2020 |
| 31239 | W M A Corporation | Wichita, KS 67278-1713 | Oil & Gas Operator | Jan 1998 |
| 31240 | W M Energy Corp | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2015 |
| 31241 | W M Gallaway | Farmington, NM 874990307 | Oil & Gas Operator | Jun 2013 |
| 31242 | W M Petroleum LLC | Cedar Vale, KS 67024 | Oil Operator | Apr 2025 |
| 31243 | W M Smith | | Oil Operator | Jun 1989 |
| 31244 | W P Brown Enterprises Inc | Byesville, OH 43723 | Oil & Gas Operator | Dec 2024 |
| 31245 | W P Oil & Gas LLC | Coweta, OK 74429-5465 | Oil & Gas Operator | Mar 2015 |
| 31246 | W R Ericksen | Hobbs, NM 882411109 | Oil & Gas Operator | Jul 1994 |
| 31247 | W S Crude Oil Purchasing Inc | Oklahoma City, OK 73129-7613 | Oil & Gas Operator | May 2008 |
| 31248 | W T X Capital Investments, LLC | Wichita Falls, TX 76308 | Oil Operator | Dec 2025 |
| 31249 | W W Energy Corp | | Oil & Gas Operator | Sep 2025 |
| 31250 | W W Energy Corp And Flynn Energy | | Oil & Gas Operator | Oct 2024 |
| 31251 | W W Pet Service, Inc | Dixon, KY 42409 | Oil & Gas Operator | Dec 2022 |
| 31252 | W&S Energy LLC | Woodward, OK 73801 | Oil & Gas Operator | Sep 2022 |
| 31253 | W&T Offshore, Inc. | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 31254 | W&W Oil And Gas, Inc. | Muenster, TX 76252 | Oil Operator | Dec 2025 |
| 31255 | W&W Oil Co | Denver City, TX 79323 | Oil Operator | Jun 2002 |
| 31256 | W-N Energy Corp | Tulsa, OK 74121-1468 | Oil & Gas Operator | Nov 1994 |
| 31257 | W-R Oil Company | | Oil Operator | Jul 1990 |
| 31258 | W. A. Boser Oil | Allegany, NY 14706 | Oil Operator | Dec 2024 |
| 31259 | W. A. Moncrief | | Oil & Gas Operator | Jun 2010 |
| 31260 | W. A. Parker | | Oil & Gas Operator | Jan 1981 |
| 31261 | W. A. Stanberry | | Oil & Gas Operator | Nov 1988 |
| 31262 | W. B. D. Oil & Gas Company | Pampa, TX 79066 | Oil & Gas Operator | Dec 1995 |
| 31263 | W. B. Inabnet | | Gas Operator | Oct 1985 |
| 31264 | W. B. Jayred | | Oil & Gas Operator | Aug 1982 |
| 31265 | W. B. McCarter, Jr., Inc. | | Oil & Gas Operator | Dec 1995 |
| 31266 | W. C. Allen | | Oil & Gas Operator | Dec 2024 |
| 31267 | W. C. Emmons | | Oil Operator | Jan 2025 |
| 31268 | W. D. Henry & Sons, Inc. | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 31269 | W. D. Roberson | | Gas Operator | Mar 2021 |
| 31270 | W. D. Short Oil Co. | | Oil Operator | Apr 2004 |
| 31271 | W. D. Tarver | | Oil Operator | Aug 2005 |
| 31272 | W. E. B. Well Tending Service, Inc. | Vienna, WV 26105 | Oil & Gas Operator | Nov 2011 |
| 31273 | W. E. O'Malley Inc. | | Oil & Gas Operator | Jun 1991 |
| 31274 | W. E. Orr | | Oil & Gas Operator | Dec 2024 |
| 31275 | W. G. Darsey, III | | Oil & Gas Operator | Nov 1981 |
| 31276 | W. H. Beene | | Oil & Gas Operator | Jan 2025 |
| 31277 | W. H. Hunt | | Oil & Gas Operator | Jan 1984 |
| 31278 | W. H. Hunt Trust Estate | | Oil & Gas Operator | Mar 1997 |
| 31279 | W. H. Hunt, Et Al | | Oil & Gas Operator | Jul 1990 |
| 31280 | W. Harlan Beene | | Oil Operator | Jan 2025 |
| 31281 | W. Harlan Beene Et Al | | Oil Operator | Dec 2002 |
| 31282 | W. J. Hamilton Operator | | Oil Operator | Aug 1978 |
| 31283 | W. J. Wegman, Jr. | | Gas Operator | Dec 1991 |
| 31284 | W. L. Estis | | Oil & Gas Operator | Dec 1999 |
| 31285 | W. L. Puls & T. D. Rush | | Oil & Gas Operator | Dec 1980 |
| 31286 | W. L. Rambo | | Oil Operator | Apr 1981 |
| 31287 | W. L. Rambo, Inc. | | Oil & Gas Operator | Aug 1985 |
| 31288 | W. M. Elliott Jr. | | Oil & Gas Operator | Dec 2009 |
| 31289 | W. M. Inabnet Agent | | Gas Operator | Oct 1985 |
| 31290 | W. M. Morgan | | Oil Operator | Jan 1985 |
| 31291 | W. R. Dudley | | Oil & Gas Operator | Oct 2025 |
| 31292 | W. R. G. Oil & Gas, Inc. | Arlington, TX 76013 | Oil & Gas Operator | Dec 1993 |
| 31293 | W. R. Jennings, Jr. | | Oil Operator | Aug 2003 |
| 31294 | W. R. Williams, Inc. | Amarillo, TX 79105 | Gas Operator | Dec 2019 |
| 31295 | W. S. Hale Petroleum | | Oil & Gas Operator | Jul 2015 |
| 31296 | W. S. Hale Petroleum, L.L.C. | | Oil & Gas Operator | Jan 2025 |
| 31297 | W. T. Boyle & Co. | Graham, TX 76450 | Oil Operator | Mar 2008 |
| 31298 | W. T. Waggoner Estate | | Oil & Gas Operator | Dec 1995 |
| 31299 | W. Trich & Hallwell, Inc. | | Oil & Gas Operator | Oct 1988 |
| 31300 | W. W. F. Oil Corporation | | Oil & Gas Operator | Dec 1999 |