| 18201 | C.O.P. TRACT 25 | Centre County, PA | Oil & Gas Property | Dec 2025 |
| 18202 | C.P. CLAYTON | Palo Pinto County, TX | Oil & Gas Property | Feb 2021 |
| 18203 | C.P. DICKERSON | Henderson County, TX | Oil & Gas Property | Jun 2026 |
| 18204 | C.P. NEWMAN | Mobile County, AL | Oil & Gas Property | Nov 2008 |
| 18205 | C.PFEIL-C.KELLNER-C.HUMMEL PSA | Atascosa County, TX | Oil & Gas Property | Jun 2026 |
| 18206 | C.R. JR. & A.H. HAGEDORN HEAVEN HILL | Marshall County, WV | Oil & Gas Property | Dec 2021 |
| 18207 | C.S. LIEN | Richland County, MT | Oil & Gas Property | Jun 2026 |
| 18208 | C.S.-STATE | Ward County, TX | Oil & Gas Property | Mar 2021 |
| 18209 | C.S.O. 1 | Los Angeles County, CA | Oil & Gas Property | Aug 1989 |
| 18210 | C.S.O. 2 | Los Angeles County, CA | Oil & Gas Property | Aug 1989 |
| 18211 | C.V.G.S | Colusa County, CA | Gas Property | Jul 2026 |
| 18212 | C.V.MOORE | Tarrant County, TX | Oil & Gas Property | Jun 2026 |
| 18213 | C.W. HAHN UNIT A | Dewitt County, TX | Oil & Gas Property | Jun 2026 |
| 18214 | C.W. MCCONAUGHEY JR & HEIRS | Indiana County, PA | Gas Property | Dec 2025 |
| 18215 | C.W.O.D | Los Angeles County, CA | Oil & Gas Property | Jun 2026 |
| 18216 | C4 RANCH | La Salle County, TX | Oil & Gas Property | Jun 2026 |
| 18217 | CA 8 | Montezuma County, CO | Oil & Gas Property | May 2026 |
| 18218 | CA C 158-93-21-23 | Mountrail County, ND | Oil & Gas Property | Jun 2026 |
| 18219 | CA S 158-93-21-23 | Mountrail County, ND | Oil & Gas Property | Jun 2026 |
| 18220 | CA-ANDERSON SMITH | Williams County, ND | Oil & Gas Property | Jun 2026 |
| 18221 | CA-E BURDICK | Williams County, ND | Oil & Gas Property | Jun 2026 |
| 18222 | CA-FERGUSON SMITH | Williams County, ND | Oil & Gas Property | Jun 2026 |
| 18223 | CA-HALVERSON 154-95-0409H | Williams County, ND | Oil & Gas Property | Jun 2026 |
| 18224 | CA-RUSSELL SMITH- 155-96-2425H | Williams County, ND | Oil & Gas Property | Jun 2026 |
| 18225 | CA-STANGELAND-155-95- 2128H | Williams County, ND | Oil & Gas Property | Jun 2026 |
| 18226 | CAB -A | Gray County, TX | Oil & Gas Property | Jun 2026 |
| 18227 | CAB HUGHES | Pittsburg County, OK | Gas Property | Jun 2026 |
| 18228 | CABALLO | Campbell County, WY | Gas Property | Nov 2008 |
| 18229 | CABALLO | Campbell County, WY | Gas Property | Mar 2007 |
| 18230 | CABALLO | Campbell County, WY | Gas Property | May 2011 |
| 18231 | CABALLO | Campbell County, WY | Gas Property | Jul 2005 |
| 18232 | CABALLO | Campbell County, WY | Gas Property | Jul 2011 |
| 18233 | CABALLO | Brazos County, TX | Oil & Gas Property | May 2026 |
| 18234 | CABALLO | San Juan County, UT | Oil & Gas Property | May 2011 |
| 18235 | CABALLO | Campbell County, WY | Oil & Gas Property | Oct 2025 |
| 18236 | CABALLO 23 FEDERAL | Lea County, NM | Oil & Gas Property | Jun 2026 |
| 18237 | CABALLO AZUL 28-33 | Dawson County, TX | Oil & Gas Property | May 2026 |
| 18238 | CABALLO COAL FEDERAL | Campbell County, WY | Gas Property | Dec 2006 |
| 18239 | CABE | Lafayette County, AR | Oil Property | Mar 1971 |
| 18240 | CABE TROY | Hemphill County, TX | Oil & Gas Property | May 2026 |
| 18241 | CABEEN | Pecos County, TX | Oil & Gas Property | Oct 2025 |
| 18242 | CABELL, ALBERT | Logan County, WV | Gas Property | Dec 2021 |
| 18243 | CABERNET | Blaine County, OK | Oil & Gas Property | May 2026 |
| 18244 | CABERNET | Martin County, TX | Oil & Gas Property | Jun 2026 |
| 18245 | CABEZON | Webb County, TX | Oil & Gas Property | May 2026 |
| 18246 | CABIN | Okmulgee County, OK | Oil & Gas Property | May 2012 |
| 18247 | CABIN CR | Fallon County, MT | Oil & Gas Property | Mar 2026 |
| 18248 | CABIN CRUISER 1 | Uintah County, UT | Oil & Gas Property | Jun 2026 |
| 18249 | CABIN LAKE 31 FEDERAL | Lea County, NM | Oil & Gas Property | Aug 2025 |
| 18250 | CABINET STATE 55-2 UNIT | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 18251 | CABLE | Pittsburg County, OK | Oil & Gas Property | Jun 2026 |
| 18252 | CABLE | Pittsburg County, OK | Gas Property | Jun 2026 |
| 18253 | CABLE | Stark County, OH | Oil & Gas Property | Dec 2025 |
| 18254 | CABLE | Pittsburg County, OK | Gas Property | Jul 2026 |
| 18255 | CABLE & SNYDER LOGGING CO | Clearfield County, PA | Gas Property | Dec 2024 |
| 18256 | CABLE 19 35 | Lea County, NM | Oil & Gas Property | Jun 2026 |
| 18257 | CABLE MARIE 29-15-HLID3 | Richland County, MT | Oil & Gas Property | Jun 2026 |
| 18258 | CABLE, AUSTIN | Lee County, KY | Oil Property | Dec 2023 |
| 18259 | CABLE, JACOB R H | Wolfe County, KY | Oil Property | Dec 2023 |
| 18260 | CABLE, TOPSY | Lee County, KY | Oil Property | Dec 2023 |
| 18261 | CABLE-S | Richland County, MT | Oil & Gas Property | Jun 2026 |
| 18262 | CABLE-STEPPLER 20-2H | Richland County, MT | Oil & Gas Property | Jun 2026 |
| 18263 | CABO BLANCO STATE | Lea County, NM | Oil & Gas Property | Jul 2026 |
| 18264 | CABO WABO 25 FEDERAL | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 18265 | CABO WABO FEDERAL COM | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 18266 | CABOT | Texas County, OK | Oil & Gas Property | Jun 2026 |
| 18267 | CABOT 15591-0112 | Mountrail County, ND | Oil & Gas Property | Jun 2026 |
| 18268 | CABOT AMHERST | Putnam County, WV | Oil & Gas Property | Dec 2021 |
| 18269 | CABOT STATE | Lea County, NM | Oil & Gas Property | Jul 2026 |
| 18270 | CABOT UNIVERSITY LANDS | Andrews County, TX | Oil & Gas Property | Apr 2014 |
| 18271 | CABOT-DAHL | Hansford County, TX | Gas Property | May 2026 |
| 18272 | CABOT-KRAMER | Palo Pinto County, TX | Oil & Gas Property | May 2026 |
| 18273 | CABOT-UNIVERSITY | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 18274 | CABRA LOCA 11 B | Lea County, NM | Oil & Gas Property | Jun 2026 |
| 18275 | CABRA NINO 11 B | Lea County, NM | Oil & Gas Property | Jun 2026 |
| 18276 | CABRA NINO 14 | Lea County, NM | Oil & Gas Property | Jun 2026 |
| 18277 | CABRERA 34 FEDERAL | Eddy County, NM | Oil & Gas Property | Jun 2026 |
| 18278 | CABRITO | Sublette County, WY | Oil & Gas Property | Jun 2026 |
| 18279 | CABRITO LONG STATE | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 18280 | CABRITO STATE | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 18281 | CABS | Beckham County, OK | Oil & Gas Property | Jun 2026 |
| 18282 | CABWAYLINGO ST | Wayne County, WV | Oil & Gas Property | Dec 2021 |
| 18283 | CACHE | Weld County, CO | Oil & Gas Property | May 2025 |
| 18284 | CACHE BASIN | Yolo County, CA | Gas Property | Nov 1987 |
| 18285 | CACHE RIVER 29 32 STATE COM | Lea County, NM | Oil & Gas Property | Jun 2026 |
| 18286 | CACHE UNIT | Montezuma County, CO | Oil & Gas Property | Jul 2014 |
| 18287 | CACKLIN LOU STATE | Sublette County, WY | Oil & Gas Property | Jul 2026 |
| 18288 | CACTUS | Eddy County, NM | Oil & Gas Property | Jun 2026 |
| 18289 | CACTUS | Park County, WY | Oil & Gas Property | Jul 2026 |
| 18290 | CACTUS 149-92-35B-05H TF | Dunn County, ND | Oil & Gas Property | Jun 2026 |
| 18291 | CACTUS 16 STATE | Eddy County, NM | Oil & Gas Property | Apr 2020 |
| 18292 | CACTUS 9 | Eddy County, NM | Oil & Gas Property | Jun 2026 |
| 18293 | CACTUS B FEDERAL | Chaves County, NM | Gas Property | Jun 2026 |
| 18294 | CACTUS FEDERAL | Chaves County, NM | Gas Property | Jun 2026 |
| 18295 | CACTUS FLOWER | Chaves County, NM | Oil & Gas Property | Jun 2026 |
| 18296 | CACTUS JACK | Webb County, TX | Oil & Gas Property | Jun 2026 |
| 18297 | CACTUS PARK | San Juan County, UT | Oil & Gas Property | Nov 2024 |
| 18298 | CACTUS QUEEN UNIT | Chaves County, NM | Oil & Gas Property | May 2009 |
| 18299 | CACY-SAUER | Bexar County, TX | Oil & Gas Property | May 2026 |
| 18300 | CADDEL | Jack County, TX | Oil & Gas Property | Jun 2026 |