| 80201 | MASSENBURG | Stephens County, TX | Oil & Gas Property | Nov 2024 |
| 80202 | MASSENGALE | Jack County, TX | Oil & Gas Property | Aug 2021 |
| 80203 | MASSENGILL | Muskingum County, OH | Oil & Gas Property | Dec 2016 |
| 80204 | MASSEY | Mitchell County, TX | Oil Property | May 2026 |
| 80205 | MASSEY | Lee County, TX | Oil & Gas Property | May 2026 |
| 80206 | MASSEY | Ellis County, OK | Oil & Gas Property | Apr 2026 |
| 80207 | MASSEY | Woodson County, KS | Oil Property | Mar 2026 |
| 80208 | MASSEY | Victoria County, TX | Oil & Gas Property | Apr 2020 |
| 80209 | MASSEY | Montgomery County, KS | Oil & Gas Property | Dec 2023 |
| 80210 | MASSEY | Edwards County, KS | Oil & Gas Property | Mar 2026 |
| 80211 | MASSEY | Edwards County, KS | Oil & Gas Property | Jan 2026 |
| 80212 | MASSEY | Okfuskee County, OK | Oil Property | Apr 2013 |
| 80213 | MASSEY | Gray County, TX | Oil & Gas Property | May 2026 |
| 80214 | MASSEY | Midland County, TX | Oil & Gas Property | May 2026 |
| 80215 | MASSEY | Johnson County, TX | Oil & Gas Property | May 2026 |
| 80216 | MASSEY | Burleson County, TX | Oil & Gas Property | May 2026 |
| 80217 | MASSEY | Claiborne Parish, LA | Oil & Gas Property | Dec 2024 |
| 80218 | MASSEY | Hood County, TX | Oil & Gas Property | May 2026 |
| 80219 | MASSEY | Wise County, TX | Oil & Gas Property | May 2025 |
| 80220 | MASSEY | Morgan County, OH | Oil & Gas Property | Dec 1994 |
| 80221 | MASSEY | Throckmorton County, TX | Oil & Gas Property | Apr 2026 |
| 80222 | MASSEY A | Collingsworth County, TX | Gas Property | May 2026 |
| 80223 | MASSEY BALDWIN | Live Oak County, TX | Oil & Gas Property | Nov 2025 |
| 80224 | MASSEY ELEANOR ETAL | Morgan County, OH | Oil & Gas Property | Dec 2022 |
| 80225 | MASSEY GEORGIA GAS UNIT | Denton County, TX | Oil & Gas Property | May 2026 |
| 80226 | MASSEY MARVIN M. JR | Bexar County, TX | Oil & Gas Property | May 2026 |
| 80227 | MASSEY-BENTLEY | Ward County, TX | Oil & Gas Property | May 2026 |
| 80228 | MASSIE | Clay County, TX | Oil & Gas Property | Nov 2024 |
| 80229 | MASSIE | Upton County, TX | Oil & Gas Property | May 2026 |
| 80230 | MASSIE CHANDLER | Grady County, OK | Oil & Gas Property | Nov 2017 |
| 80231 | MASSIE R. H | Jack County, TX | Oil & Gas Property | Apr 2026 |
| 80232 | MASSIE-CHAPMAN | Gray County, TX | Oil & Gas Property | Apr 2026 |
| 80233 | MASSIER | Ellis County, KS | Oil Property | Jan 2026 |
| 80234 | MASSIER | Trego County, KS | Oil Property | Jun 1991 |
| 80235 | MASSINGALE | Harrison County, TX | Oil & Gas Property | May 2026 |
| 80236 | MASSINGILL | Conway County, AR | Gas Property | Jul 2024 |
| 80237 | MASSIVE 19 | Yuma County, CO | Gas Property | May 2026 |
| 80238 | MASSIVE STATE 3-1N-163-102 | Divide County, ND | Oil & Gas Property | May 2026 |
| 80239 | MASSMAN | Okfuskee County, OK | Oil & Gas Property | Jul 2020 |
| 80240 | MASSMAN | Rice County, KS | Oil Property | Mar 2026 |
| 80241 | MASSMAN | Leavenworth County, KS | Oil Property | Mar 2026 |
| 80242 | MASSO | Susquehanna County, PA | Gas Property | May 2026 |
| 80243 | MASSONI | Seward County, KS | Oil & Gas Property | Mar 2026 |
| 80244 | MASSOTH | Woodson County, KS | Oil Property | Apr 2024 |
| 80245 | MAST | Nacogdoches County, TX | Oil & Gas Property | May 2026 |
| 80246 | MAST | Trumbull County, OH | Oil & Gas Property | Dec 2025 |
| 80247 | MAST | Lawrence County, PA | Oil & Gas Property | Dec 2025 |
| 80248 | MAST | Nacogdoches County, TX | Oil & Gas Property | May 2026 |
| 80249 | MAST | Holmes County, OH | Oil & Gas Property | Dec 2025 |
| 80250 | MAST A. T. B | Nacogdoches County, TX | Oil & Gas Property | Apr 2026 |
| 80251 | MAST GAS UNIT A | Nacogdoches County, TX | Oil & Gas Property | May 2025 |
| 80252 | MAST UNIT | Custer County, OK | Oil & Gas Property | Feb 2026 |
| 80253 | MASTEL 14-24TFH | Dunn County, ND | Oil & Gas Property | May 2026 |
| 80254 | MASTEN | Cochran County, TX | Oil & Gas Property | May 2026 |
| 80255 | MASTER FEDERAL COM | Lea County, NM | Oil & Gas Property | May 2026 |
| 80256 | MASTER SPLINTER | Washington County, PA | Gas Property | May 2026 |
| 80257 | MASTERBRAY | Fayette County, PA | Oil & Gas Property | May 2026 |
| 80258 | MASTERS | Pottawatomie County, OK | Oil Property | Feb 2026 |
| 80259 | MASTERS | Johnson County, TX | Oil & Gas Property | May 2026 |
| 80260 | MASTERS | Bexar County, TX | Oil & Gas Property | May 2026 |
| 80261 | MASTERS | Pittsburg County, OK | Gas Property | May 2026 |
| 80262 | MASTERS | Venango County, PA | Oil Property | Dec 2025 |
| 80263 | MASTERS | Garvin County, OK | Oil Property | Jan 2022 |
| 80264 | MASTERS | Garfield County, OK | Oil & Gas Property | Feb 2012 |
| 80265 | MASTERS HN MON | Harrison County, OH | Oil & Gas Property | Mar 2026 |
| 80266 | MASTERS UNIT | Howard County, TX | Oil & Gas Property | May 2026 |
| 80267 | MASTERSON | King County, TX | Oil & Gas Property | Apr 2026 |
| 80268 | MASTERSON | Pecos County, TX | Oil & Gas Property | May 2026 |
| 80269 | MASTERSON | Perry County, OH | Oil & Gas Property | Dec 2001 |
| 80270 | MASTERSON | Morgan County, OH | Oil & Gas Property | Dec 2012 |
| 80271 | MASTERSON | Brazoria County, TX | Oil & Gas Property | May 2026 |
| 80272 | MASTERSON | Ottawa County, MI | Oil Property | Jul 2026 |
| 80273 | MASTERSON | Pecos County, TX | Oil & Gas Property | May 2026 |
| 80274 | MASTERSON | Perry County, OH | Oil & Gas Property | Dec 2025 |
| 80275 | MASTERSON | Potter County, TX | Oil & Gas Property | Apr 2026 |
| 80276 | MASTERSON | Potter County, TX | Gas Property | Apr 2026 |
| 80277 | MASTERSON | Reagan County, TX | Oil & Gas Property | Apr 2026 |
| 80278 | MASTERSON | Brazoria County, TX | Oil Property | May 2026 |
| 80279 | MASTERSON | Potter County, TX | Oil & Gas Property | May 2026 |
| 80280 | MASTERSON 2 | Logan County, OK | Oil & Gas Property | Apr 2026 |
| 80281 | MASTERSON 37 | Sutton County, TX | Oil & Gas Property | Apr 2026 |
| 80282 | MASTERSON 87 | Potter County, TX | Oil & Gas Property | May 2026 |
| 80283 | MASTERSON IRR | Brazoria County, TX | Oil & Gas Property | Sep 2018 |
| 80284 | MASTERSON RED CAVE UNIT | Moore County, TX | Oil & Gas Property | May 2026 |
| 80285 | MASTIFF FEDERAL | Lea County, NM | Oil & Gas Property | May 2026 |
| 80286 | MASTODON | Tarrant County, TX | Gas Property | May 2026 |
| 80287 | MASTON | Coshocton County, OH | Oil & Gas Property | Dec 2025 |
| 80288 | MASTON 34-27 | McKenzie County, ND | Oil & Gas Property | May 2026 |
| 80289 | MASTRANGELO | Geauga County, OH | Oil & Gas Property | Dec 2025 |
| 80290 | MATA-THOMAS GU | Webb County, TX | Oil & Gas Property | May 2026 |
| 80291 | MATADOR | Richland County, MT | Oil & Gas Property | May 2026 |
| 80292 | MATADOR | Motley County, TX | Oil & Gas Property | May 2026 |
| 80293 | MATADOR 19 STATE | Lea County, NM | Oil Property | Mar 2026 |
| 80294 | MATADOR 2734-7H | Divide County, ND | Oil & Gas Property | May 2026 |
| 80295 | MATADOR 6-33 | Reeves County, TX | Oil & Gas Property | May 2026 |
| 80296 | MATADOR 646 | Yoakum County, TX | Oil & Gas Property | May 2026 |
| 80297 | MATADOR COWEY ORCA | Dewitt County, TX | Oil & Gas Property | Jul 2025 |
| 80298 | MATADOR DANYSH ORCA | Karnes County, TX | Oil & Gas Property | May 2026 |
| 80299 | MATADOR FEDERAL 2658 43-7H | Richland County, MT | Oil & Gas Property | May 2026 |
| 80300 | MATADOR K. LOVE ORCA | Dewitt County, TX | Oil & Gas Property | Jun 2019 |