| 301 | W. J. NEWSOM | Union County, AR | Oil Property | Mar 1964 |
| 302 | W. K. FROST | Coshocton County, OH | Oil & Gas Property | Dec 2025 |
| 303 | W. L. GRAY ET AL UNIT | Fort Bend County, TX | Oil & Gas Property | Jun 2026 |
| 304 | W. L. RANCH UNIT | Burleson County, TX | Oil & Gas Property | May 2026 |
| 305 | W. M. ACKERMAN | Grant County, KS | Gas Property | May 2026 |
| 306 | W. M. IDEN | Howard County, TX | Oil Property | Aug 2024 |
| 307 | W. M. WILSON | Haskell County, KS | Oil & Gas Property | Jul 1987 |
| 308 | W. MCMORDIE | Roberts County, TX | Oil & Gas Property | Jun 2026 |
| 309 | W. N. WADDELL DPU | Crane County, TX | Oil & Gas Property | Jun 2026 |
| 310 | W. O. LEIGHTON | Gove County, KS | Oil Property | May 2026 |
| 311 | W. P. H. FEE (NCT-1) | Ventura County, CA | Oil & Gas Property | Jul 2026 |
| 312 | W. R. GREEN | Seward County, KS | Gas Property | May 2026 |
| 313 | W. R. KENOYER | Stevens County, KS | Gas Property | May 2026 |
| 314 | W. R. TUTT | Harrison County, TX | Oil & Gas Property | Jun 2026 |
| 315 | W. RIFE | Gallia County, OH | Oil & Gas Property | Dec 2025 |
| 316 | W. T. BELL GAS UNIT | Dewitt County, TX | Oil & Gas Property | Jun 2026 |
| 317 | W. T. CARTER & BRO./ | Polk County, TX | Oil & Gas Property | Jun 2026 |
| 318 | W. T. JONES | Stanton County, KS | Gas Property | May 2026 |
| 319 | W. T. MUNN ET AL | Bottineau County, ND | Oil Property | Jan 1961 |
| 320 | W. W. EDGAR | Greenwood County, KS | Oil Property | May 2026 |
| 321 | W. W. JOHNSON | McPherson County, KS | Oil Property | Feb 2026 |
| 322 | W. W. MCDONALD LAND CO | Logan County, WV | Gas Property | Dec 2021 |
| 323 | W. WEST-TAURUS-92-20-08-21 | Tuscaloosa County, AL | Gas Property | Jun 2026 |
| 324 | W.A. ADAMS | Houston County, TX | Oil & Gas Property | Dec 2024 |
| 325 | W.A. ESTES | Ward County, TX | Oil & Gas Property | May 2026 |
| 326 | W.B. OWEN | Jack County, TX | Oil & Gas Property | Jan 2025 |
| 327 | W.B. UNIT | Fisher County, TX | Oil & Gas Property | Jun 2026 |
| 328 | W.B. WIENER JR. ET AL 1 | Panola County, TX | Gas Property | Jun 2026 |
| 329 | W.BEITZEL | Tuscarawas County, OH | Oil & Gas Property | Dec 2025 |
| 330 | W.C. #1-15 | Kingfisher County, OK | Oil & Gas Property | Jul 2026 |
| 331 | W.C. CHILES | Canadian County, OK | Oil & Gas Property | Jun 2026 |
| 332 | W.C. MURPHY | Bee County, TX | Oil Property | Jun 2026 |
| 333 | W.C. WEIR ESTATE "E" | Stonewall County, TX | Oil Property | Jun 2026 |
| 334 | W.CHISM | Montgomery County, KS | Gas Property | May 2026 |
| 335 | W.D. INC | Wayne County, OH | Oil & Gas Property | Dec 2025 |
| 336 | W.D. JOHNSON | Wise County, TX | Oil & Gas Property | Jun 2026 |
| 337 | W.D.LEONARD | Custer County, OK | Oil & Gas Property | Jun 2026 |
| 338 | W.E. ISLEY 6093 12-26B | Burke County, ND | Oil & Gas Property | Jun 2026 |
| 339 | W.E. JACKSON GAS UNIT | Harrison County, TX | Oil & Gas Property | Jun 2026 |
| 340 | W.E.BURRELL | Major County, OK | Oil & Gas Property | Jul 2026 |
| 341 | W.E.WILLIAMS | Clay County, TX | Oil Property | Jun 2026 |
| 342 | W.G.O.-UNIT A | Kern County, CA | Oil & Gas Property | Jul 1992 |
| 343 | W.H. & C.O. OSWELL | Baldwin County, AL | Oil Property | Jun 2026 |
| 344 | W.H. BARRETT | Young County, TX | Oil Property | Jun 2026 |
| 345 | W.H. CROSS | Glacier County, MT | Oil Property | Jun 2026 |
| 346 | W.H. GROVE A | Ector County, TX | Oil Property | Jul 2023 |
| 347 | W.H. MCDONALD | Licking County, OH | Oil Property | Dec 2017 |
| 348 | W.H.NEW | Caldwell County, TX | Oil Property | Jun 2026 |
| 349 | W.J. LAKES UNIT J | Denton County, TX | Gas Property | Jun 2026 |
| 350 | W.J. TRICE | Choctaw County, AL | Oil Property | May 1990 |
| 351 | W.J.NEWMAN | Stephens County, OK | Oil & Gas Property | Jul 2026 |
| 352 | W.L. MACKEY GU | Wise County, TX | Oil & Gas Property | Jun 2026 |
| 353 | W.L. PUCKET | Grant County, KS | Gas Property | May 2026 |
| 354 | W.M. FORREST D | Madison County, TX | Oil & Gas Property | Jun 2026 |
| 355 | W.MEANS (GRBG-SAN ANDRES) UNIT | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 356 | W.N WADDELL | Crane County, TX | Oil & Gas Property | Jun 2016 |
| 357 | W.N. WADDELL | Crane County, TX | Oil & Gas Property | Dec 2013 |
| 358 | W.O. STONE G | Limestone County, TX | Oil & Gas Property | Jun 2026 |
| 359 | W.P. HAMMON FEE B (NCT | Santa Barbara County, CA | Oil & Gas Property | Sep 1986 |
| 360 | W.P. MELLEN | Rio Blanco County, CO | Oil & Gas Property | May 2026 |
| 361 | W.R.D. UNIT | Stevens County, KS | Gas Property | May 2026 |
| 362 | W.R.U. 1 | Kern County, CA | Oil & Gas Property | Nov 2001 |
| 363 | W.R.U. 3 | Kern County, CA | Oil & Gas Property | Jul 2026 |
| 364 | W.R.U. 5 | Kern County, CA | Oil & Gas Property | May 2025 |
| 365 | W.R.U. 8 | Kern County, CA | Oil & Gas Property | May 2013 |
| 366 | W.S. SCRUGGS | Choctaw County, AL | Oil Property | Apr 1991 |
| 367 | W.T. ADAMS | Coshocton County, OH | Oil & Gas Property | Dec 2025 |
| 368 | W.T. HURT | Atascosa County, TX | Oil & Gas Property | Jun 2026 |
| 369 | W.T. LYNCH-A.L.PRICE UNIT | Cooke County, TX | Oil & Gas Property | May 2026 |
| 370 | W.T. WAGGONER ESTATE | Wilbarger County, TX | Oil Property | May 2026 |
| 371 | W.THOMPSON | Crook County, WY | Oil & Gas Property | Mar 2026 |
| 372 | W.W. AKIN | Washington County, OK | Oil & Gas Property | Apr 2018 |
| 373 | W.W. LITKE | Centre County, PA | Gas Property | Dec 2025 |
| 374 | W.W.R. INC | Medina County, TX | Oil & Gas Property | May 2026 |
| 375 | W.WEBER | Monroe County, OH | Oil & Gas Property | Dec 2025 |
| 376 | W0136887 MCCAW FED | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 377 | W0317848A | Converse County, WY | Oil & Gas Property | Nov 1990 |
| 378 | W0325447 | Converse County, WY | Oil & Gas Property | Apr 2026 |
| 379 | W15 3H | Butler County, PA | Gas Property | Jun 2026 |
| 380 | W70 PER W70 | Butler County, PA | Gas Property | Jun 2026 |
| 381 | W73 1H | Butler County, PA | Gas Property | Jun 2026 |
| 382 | W73 PER W73 2H | Butler County, PA | Gas Property | Jun 2026 |
| 383 | W74 PER W74 | Butler County, PA | Gas Property | Jun 2026 |
| 384 | W75 PER W75 | Butler County, PA | Gas Property | Jun 2026 |
| 385 | WA BLACKWELL | Dewitt County, TX | Oil & Gas Property | Jun 2026 |
| 386 | WAAG | Weld County, CO | Oil & Gas Property | May 2026 |
| 387 | WAB-EVELYN | Carson County, TX | Oil & Gas Property | May 2026 |
| 388 | WABASH 20 FED COM | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 389 | WACHSMAN | Licking County, OH | Oil Property | Dec 2020 |
| 390 | WACK UNIT | Butler County, PA | Oil & Gas Property | Jun 2026 |
| 391 | WACKER | Texas County, OK | Oil & Gas Property | Jul 2026 |
| 392 | WACKER | Texas County, OK | Gas Property | Jun 2026 |
| 393 | WACKER | Weld County, CO | Oil & Gas Property | May 2026 |
| 394 | WACKER | Morton County, KS | Gas Property | Mar 2026 |
| 395 | WACKER | Texas County, OK | Gas Property | Jun 2026 |
| 396 | WACKER | Morton County, KS | Gas Property | May 2026 |
| 397 | WACKER 'A' | Morton County, KS | Gas Property | May 2026 |
| 398 | WACKERLE | Labette County, KS | Oil Property | Jun 1984 |
| 399 | WACO | Westmoreland County, PA | Gas Property | Dec 2025 |
| 400 | WACO KID | Howard County, TX | Oil & Gas Property | May 2026 |