| 301 | C.A. DYER-PUMA | Newton County, TX | Oil & Gas Property | Apr 2026 |
| 302 | C.A. WEST ESTATE | Westmoreland County, PA | Gas Property | Dec 2025 |
| 303 | C.B. MORGAN | Choctaw County, AL | Oil Property | Aug 1978 |
| 304 | C.B. STODDARD | Colusa County, CA | Gas Property | Feb 2012 |
| 305 | C.C. CARTER | Hughes County, OK | Gas Property | Mar 2026 |
| 306 | C.C. CITIES SERVICE | Andrews County, TX | Oil & Gas Property | Apr 2026 |
| 307 | C.C. CURTIS | Athens County, OH | Oil & Gas Property | Dec 2025 |
| 308 | C.C. LOCKHART & BROWN | Andrews County, TX | Oil & Gas Property | Apr 2026 |
| 309 | C.C. NIX-FUHRMAN | Andrews County, TX | Oil & Gas Property | Apr 2026 |
| 310 | C.C.CHERRY | Pottawatomie County, OK | Oil Property | Apr 2026 |
| 311 | C.C.M.O | Kern County, CA | Oil & Gas Property | Aug 1984 |
| 312 | C.C.M.O | Kings County, CA | Oil & Gas Property | Aug 2024 |
| 313 | C.D.M. A COM | Eddy County, NM | Oil & Gas Property | May 2026 |
| 314 | C.D.SMITH | Carter County, OK | Oil Property | Jun 2021 |
| 315 | C.D.U. 'A' | Yoakum County, TX | Oil & Gas Property | Apr 2026 |
| 316 | C.E. CALVERT | Stanton County, KS | Gas Property | Mar 2026 |
| 317 | C.E. HEARD B | Bee County, TX | Oil & Gas Property | Apr 2026 |
| 318 | C.E. SMITH | Washington County, PA | Oil Property | Dec 2025 |
| 319 | C.E. STROH 4A MBH-ULW | Dunn County, ND | Oil & Gas Property | May 2026 |
| 320 | C.G. HOOKS ET AL | Harris County, TX | Gas Property | Apr 2026 |
| 321 | C.G. LUDEMAN B | Loving County, TX | Oil & Gas Property | Apr 2026 |
| 322 | C.G.CRAVENER | Armstrong County, PA | Gas Property | Dec 2025 |
| 323 | C.H. BINNEY | Grant County, KS | Gas Property | Mar 2026 |
| 324 | C.H. ESSE UNIT | Live Oak County, TX | Oil & Gas Property | Apr 2026 |
| 325 | C.H. KNIGHT | Reeves County, TX | Oil & Gas Property | Apr 2026 |
| 326 | C.H. RAMIREZ MINERALS LTD | Webb County, TX | Oil & Gas Property | Feb 2026 |
| 327 | C.H. TAYLOR UNIT A | Live Oak County, TX | Oil & Gas Property | Mar 2026 |
| 328 | C.J. IVERSON | Liberty County, MT | Oil & Gas Property | Mar 2026 |
| 329 | C.J.RICKER ESTATE | Haskell County, KS | Gas Property | Mar 2026 |
| 330 | C.M. ABNEY A HV UNIT | Harrison County, TX | Oil & Gas Property | Apr 2026 |
| 331 | C.M. HALL A 2 | Starr County, TX | Oil & Gas Property | Apr 2026 |
| 332 | C.M. RACKEL | Milam County, TX | Oil & Gas Property | Apr 2026 |
| 333 | C.N. KING | Grant County, KS | Gas Property | Mar 2026 |
| 334 | C.NOBLE | Payne County, OK | Oil Property | Dec 2024 |
| 335 | C.O. & W.H. OSWELL #3 | Baldwin County, AL | Oil Property | Feb 2026 |
| 336 | C.O. 34-20H | Dunn County, ND | Oil & Gas Property | May 2026 |
| 337 | C.O. MCELROY | Ashtabula County, OH | Oil & Gas Property | Dec 1990 |
| 338 | C.O. OSWELL | Baldwin County, AL | Oil Property | Oct 2023 |
| 339 | C.O. SPECK 262 | Dawson County, TX | Oil & Gas Property | Mar 2026 |
| 340 | C.O.BURK | Pontotoc County, OK | Oil Property | Apr 2026 |
| 341 | C.O.P. TRACT 25 | Centre County, PA | Oil & Gas Property | Dec 2025 |
| 342 | C.P. CLAYTON | Palo Pinto County, TX | Oil & Gas Property | Feb 2021 |
| 343 | C.P. DICKERSON | Henderson County, TX | Oil & Gas Property | Apr 2026 |
| 344 | C.P. NEWMAN | Mobile County, AL | Oil & Gas Property | Nov 2008 |
| 345 | C.PFEIL-C.KELLNER-C.HUMMEL PSA | Atascosa County, TX | Oil & Gas Property | Apr 2026 |
| 346 | C.R. JR. & A.H. HAGEDORN HEAVEN HILL | Marshall County, WV | Oil & Gas Property | Dec 2021 |
| 347 | C.S. LIEN | Richland County, MT | Oil & Gas Property | Apr 2026 |
| 348 | C.S.-STATE | Ward County, TX | Oil & Gas Property | Mar 2021 |
| 349 | C.S.O. 1 | Los Angeles County, CA | Oil & Gas Property | Aug 1989 |
| 350 | C.S.O. 2 | Los Angeles County, CA | Oil & Gas Property | Aug 1989 |
| 351 | C.V.G.S | Colusa County, CA | Gas Property | May 2026 |
| 352 | C.V.MOORE | Tarrant County, TX | Oil & Gas Property | Apr 2026 |
| 353 | C.W. HAHN UNIT A | Dewitt County, TX | Oil & Gas Property | Apr 2026 |
| 354 | C.W. MCCONAUGHEY JR & HEIRS | Indiana County, PA | Gas Property | Dec 2025 |
| 355 | C.W.O.D | Los Angeles County, CA | Oil & Gas Property | Apr 2026 |
| 356 | C.WEST | Pottawatomie County, OK | Oil Property | Oct 2025 |
| 357 | CA 8 | Montezuma County, CO | Oil & Gas Property | May 2026 |
| 358 | CA C 158-93-21-23 | Mountrail County, ND | Oil & Gas Property | May 2026 |
| 359 | CA S 158-93-21-23 | Mountrail County, ND | Oil & Gas Property | May 2026 |
| 360 | CA-ANDERSON SMITH | Williams County, ND | Oil & Gas Property | May 2026 |
| 361 | CA-E BURDICK | Williams County, ND | Oil & Gas Property | May 2026 |
| 362 | CA-FERGUSON SMITH | Williams County, ND | Oil & Gas Property | May 2026 |
| 363 | CA-HALVERSON 154-95-0409H | Williams County, ND | Oil & Gas Property | May 2026 |
| 364 | CA-RUSSELL SMITH- 155-96-2425H | Williams County, ND | Oil & Gas Property | May 2026 |
| 365 | CA-STANGELAND- 155-95-2128H | Williams County, ND | Oil & Gas Property | May 2026 |
| 366 | CAB -A | Gray County, TX | Oil & Gas Property | Apr 2026 |
| 367 | CAB HUGHES | Pittsburg County, OK | Gas Property | May 2026 |
| 368 | CABALLO | Campbell County, WY | Gas Property | Nov 2008 |
| 369 | CABALLO | Campbell County, WY | Gas Property | Mar 2007 |
| 370 | CABALLO | Campbell County, WY | Gas Property | May 2011 |
| 371 | CABALLO | Campbell County, WY | Gas Property | Jul 2005 |
| 372 | CABALLO | Campbell County, WY | Gas Property | Jul 2011 |
| 373 | CABALLO | Brazos County, TX | Oil & Gas Property | Mar 2026 |
| 374 | CABALLO | San Juan County, UT | Oil & Gas Property | May 2011 |
| 375 | CABALLO | Campbell County, WY | Oil & Gas Property | Oct 2025 |
| 376 | CABALLO 23 FEDERAL | Lea County, NM | Oil & Gas Property | May 2026 |
| 377 | CABALLO AZUL 28-33 | Dawson County, TX | Oil & Gas Property | Apr 2026 |
| 378 | CABALLO COAL FEDERAL | Campbell County, WY | Gas Property | Dec 2006 |
| 379 | CABE | Lafayette County, AR | Oil Property | Mar 1971 |
| 380 | CABE TROY | Hemphill County, TX | Oil & Gas Property | Apr 2026 |
| 381 | CABEEN | Pecos County, TX | Oil & Gas Property | Oct 2025 |
| 382 | CABELL, ALBERT | Logan County, WV | Gas Property | Dec 2021 |
| 383 | CABERNET | Blaine County, OK | Oil & Gas Property | Feb 2026 |
| 384 | CABERNET | Martin County, TX | Oil & Gas Property | Apr 2026 |
| 385 | CABEZON | Webb County, TX | Oil & Gas Property | Apr 2026 |
| 386 | CABIN | Okmulgee County, OK | Oil & Gas Property | May 2012 |
| 387 | CABIN CR | Fallon County, MT | Oil & Gas Property | Mar 2026 |
| 388 | CABIN CRUISER 1 | Uintah County, UT | Oil & Gas Property | May 2026 |
| 389 | CABIN LAKE 31 FEDERAL | Lea County, NM | Oil & Gas Property | Aug 2025 |
| 390 | CABINET STATE 55-2 UNIT | Reeves County, TX | Oil & Gas Property | Apr 2026 |
| 391 | CABLE | Pittsburg County, OK | Oil & Gas Property | May 2026 |
| 392 | CABLE | Pittsburg County, OK | Gas Property | Apr 2026 |
| 393 | CABLE | Stark County, OH | Oil & Gas Property | Dec 2024 |
| 394 | CABLE | Pittsburg County, OK | Gas Property | May 2026 |
| 395 | CABLE & SNYDER LOGGING CO | Clearfield County, PA | Gas Property | Dec 2024 |
| 396 | CABLE 19 35 | Lea County, NM | Oil & Gas Property | May 2026 |
| 397 | CABLE MARIE 29-15-HLID3 | Richland County, MT | Oil & Gas Property | May 2026 |
| 398 | CABLE, AUSTIN | Lee County, KY | Oil Property | Dec 2023 |
| 399 | CABLE, JACOB R H | Wolfe County, KY | Oil Property | Dec 2023 |
| 400 | CABLE, TOPSY | Lee County, KY | Oil Property | Dec 2023 |