| 1301 | MANSFIELD | Chautauqua County, NY | Gas Property | Dec 2022 |
| 1302 | MANSFIELD | Canadian County, OK | Oil & Gas Property | Jan 2025 |
| 1303 | MANSFIELD | Tarrant County, TX | Gas Property | Jan 2025 |
| 1304 | MANSFIELD | Armstrong County, PA | Gas Property | Dec 2024 |
| 1305 | MANSFIELD | Jack County, TX | Oil & Gas Property | Jan 2025 |
| 1306 | MANSFIELD | San Juan County, NM | Oil & Gas Property | Feb 2025 |
| 1307 | MANSFIELD | Sebastian County, AR | Gas Property | Feb 2016 |
| 1308 | MANSFIELD 2 | Yuma County, CO | Gas Property | May 2019 |
| 1309 | MANSFIELD HARDWOOD L | De Soto Parish, LA | Gas Property | Dec 2024 |
| 1310 | MANSFIELD HARDWOOD L | De Soto Parish, LA | Oil & Gas Property | Dec 2024 |
| 1311 | MANSFIELD PARTNERS | Tarrant County, TX | Gas Property | Jan 2025 |
| 1312 | MANSFIELD SPORTS COMPLEX UNIT | Tarrant County, TX | Gas Property | Jan 2025 |
| 1313 | MANSINGER 1 | Harrison County, TX | Oil & Gas Property | Jan 2024 |
| 1314 | MANSKE | Jones County, TX | Oil & Gas Property | Jan 2025 |
| 1315 | MANSKE | Ellis County, OK | Oil & Gas Property | Jan 2025 |
| 1316 | MANSKER A | Bee County, TX | Oil & Gas Property | Jan 2025 |
| 1317 | MANSON | Allen County, KS | Oil Property | Dec 2024 |
| 1318 | MANSON | Montague County, TX | Oil & Gas Property | Jan 2025 |
| 1319 | MANSON | Custer County, OK | Oil & Gas Property | Jan 2025 |
| 1320 | MANSON, MARY LOU | Smith County, TX | Oil Property | Jan 2025 |
| 1321 | MANSON, SAND | Upshur County, WV | Gas Property | Dec 2021 |
| 1322 | MANSPERGER | Muskingum County, OH | Oil & Gas Property | Dec 2024 |
| 1323 | MANSUR | Mesa County, CO | Oil & Gas Property | Dec 2018 |
| 1324 | MANSUR | Jones County, TX | Oil Property | Jan 2025 |
| 1325 | MANSZ | Rice County, KS | Oil Property | Nov 2023 |
| 1326 | MANSZ ESTATE | Rice County, KS | Oil Property | Jun 2024 |
| 1327 | MANTA | Brazos County, TX | Oil & Gas Property | Dec 2024 |
| 1328 | MANTA RAY 1-12H | McKenzie County, ND | Oil & Gas Property | Feb 2025 |
| 1329 | MANTEL | Rice County, KS | Oil Property | Oct 2024 |
| 1330 | MANTEL | Noble County, OH | Oil & Gas Property | Dec 2024 |
| 1331 | MANTEL J23 | Weld County, CO | Oil & Gas Property | Nov 2014 |
| 1332 | MANTEY | Edwards County, KS | Oil Property | Dec 2024 |
| 1333 | MANTICORE STATE 55-3-3 UNIT | Reeves County, TX | Oil & Gas Property | Jan 2025 |
| 1334 | MANTOOTH | Montgomery County, KS | Oil Property | Oct 1992 |
| 1335 | MANTOOTH | Chautauqua County, KS | Oil Property | May 1986 |
| 1336 | MANTOOTH | Franklin County, AR | Gas Property | Jun 2024 |
| 1337 | MANTOOTH | Franklin County, AR | Gas Property | Jun 2024 |
| 1338 | MANTOOTH | Garvin County, OK | Oil & Gas Property | Jun 2023 |
| 1339 | MANTZ | McKean County, PA | Gas Property | Dec 2024 |
| 1340 | MANTZ | Medina County, OH | Oil & Gas Property | Dec 2018 |
| 1341 | MANTZ 21-28-14 1H | Woods County, OK | Oil & Gas Property | Jan 2025 |
| 1342 | MANTZKE | Stevens County, KS | Gas Property | Dec 2024 |
| 1343 | MANUEL | Pontotoc County, OK | Oil Property | Feb 2024 |
| 1344 | MANUEL | Throckmorton County, TX | Oil & Gas Property | Jan 2025 |
| 1345 | MANUEL | Kingfisher County, OK | Oil & Gas Property | Jan 2025 |
| 1346 | MANUEL | Nowata County, OK | Gas Property | Oct 2020 |
| 1347 | MANUEL | Creek County, OK | Oil Property | Nov 1998 |
| 1348 | MANUEL 1 | Hill County, MT | Gas Property | Mar 2011 |
| 1349 | MANUEL LABOR | Johnson County, TX | Gas Property | Jan 2025 |
| 1350 | MANUEL UNIT | Butler County, PA | Gas Property | Feb 2025 |
| 1351 | MANUFACTURERS GAS | Elk County, PA | Gas Property | Dec 2024 |
| 1352 | MANULIFE INS CO 3 | McKean County, PA | Gas Property | Dec 2024 |
| 1353 | MANVILLE | Union County, AR | Oil & Gas Property | Apr 2022 |
| 1354 | MANVILLE | Grant Parish, LA | Oil & Gas Property | Jan 2025 |
| 1355 | MANVILLE | Noble County, OK | Oil & Gas Property | Dec 2021 |
| 1356 | MANVILLE | Union Parish, LA | Gas Property | Nov 2024 |
| 1357 | MANVILLE | Union Parish, LA | Gas Property | Jul 2024 |
| 1358 | MANVILLE 7 | Union Parish, LA | Gas Property | Nov 2024 |
| 1359 | MANVILLE FOREST PROD | Bossier Parish, LA | Oil & Gas Property | Dec 2024 |
| 1360 | MANVILLE JOHNS | Johnson County, TX | Gas Property | Jul 2019 |
| 1361 | MANWARREN | Greenwood County, KS | Oil & Gas Property | Feb 2024 |
| 1362 | MANX 148-93-31D-30H TF | Dunn County, ND | Oil & Gas Property | Feb 2025 |
| 1363 | MANY CANYONS | Rio Arriba County, NM | Oil & Gas Property | Feb 2025 |
| 1364 | MANY CANYONS 30 04 | Rio Arriba County, NM | Gas Property | Feb 2025 |
| 1365 | MANY ROCKS GALLUP PROJECT | San Juan County, NM | Oil & Gas Property | May 1998 |
| 1366 | MANZANITA STATE | Lea County, NM | Oil & Gas Property | Feb 2025 |
| 1367 | MANZER A 4 | Susquehanna County, PA | Gas Property | Feb 2025 |
| 1368 | MANZIEL G | Wood County, TX | Oil & Gas Property | Jan 2025 |
| 1369 | MAP 152-94-33D-28H-TF1 | McKenzie County, ND | Oil & Gas Property | Feb 2025 |
| 1370 | MAP LLC 11 | Garfield County, CO | Oil & Gas Property | Feb 2025 |
| 1371 | MAPACHE | Mitchell County, TX | Oil & Gas Property | Feb 2025 |
| 1372 | MAPACHE GRANDE | Scurry County, TX | Oil & Gas Property | Feb 2025 |
| 1373 | MAPACHE GRANDE 14 | Scurry County, TX | Oil & Gas Property | Jan 2025 |
| 1374 | MAPACHE GRANDE 2 | Scurry County, TX | Oil & Gas Property | Jan 2025 |
| 1375 | MAPELLI | Weld County, CO | Oil & Gas Property | Feb 2019 |
| 1376 | MAPES | Decatur County, KS | Oil Property | Aug 2023 |
| 1377 | MAPES | Campbell County, WY | Oil Property | Feb 2025 |
| 1378 | MAPES-BEATTIE | Medina County, OH | Oil & Gas Property | Dec 2014 |
| 1379 | MAPHIES | Neosho County, KS | Oil Property | Jan 2002 |
| 1380 | MAPLE | Karnes County, TX | Oil & Gas Property | Jan 2025 |
| 1381 | MAPLE | Estill County, KY | Oil Property | Dec 2022 |
| 1382 | MAPLE | Kingman County, KS | Oil & Gas Property | Dec 2024 |
| 1383 | MAPLE | Campbell County, WY | Oil & Gas Property | Feb 2025 |
| 1384 | MAPLE | Beaver County, OK | Oil & Gas Property | Jan 2025 |
| 1385 | MAPLE 3 | Converse County, WY | Oil & Gas Property | Feb 2025 |
| 1386 | MAPLE 31-7-2 | Jefferson County, OH | Gas Property | Dec 2024 |
| 1387 | MAPLE FOREST | Crawford County, MI | Gas Property | Feb 2025 |
| 1388 | MAPLE OIL | Allegany County, NY | Oil & Gas Property | Dec 2019 |
| 1389 | MAPLE RIDGE FEDERAL | Chaves County, NM | Oil & Gas Property | Feb 2025 |
| 1390 | MAPLE STATE | Eddy County, NM | Oil & Gas Property | Feb 2025 |
| 1391 | MAPLE TREE | Tarrant County, TX | Oil & Gas Property | Jan 2025 |
| 1392 | MAPLE TREE SOUTH UNIT | Tarrant County, TX | Oil & Gas Property | Jan 2025 |
| 1393 | MAPLE, EUGENE R | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 1394 | MAPLE, JOHN 1 | Wetzel County, WV | Oil & Gas Property | Sep 2021 |
| 1395 | MAPLES | Johnson County, TX | Oil & Gas Property | Jan 2025 |
| 1396 | MAPLES | Cimarron County, OK | Oil Property | Jul 2008 |
| 1397 | MAPLEWOOD | Weld County, CO | Oil & Gas Property | Oct 2021 |
| 1398 | MAPZ MD 13 | Broomfield County, CO | Oil & Gas Property | Apr 2020 |
| 1399 | MAR RANCH | Atascosa County, TX | Oil & Gas Property | Jan 2025 |
| 1400 | MAR-DAW 39 | Martin County, TX | Oil & Gas Property | Jan 2025 |