| 1301 | OPSAL 158-99-26A-35-1H | Williams County, ND | Oil & Gas Property | Aug 2025 |
| 1302 | OPSETH | Burke County, ND | Oil & Gas Property | Sep 2025 |
| 1303 | OPTIMO | Marshall County, OK | Oil & Gas Property | Jul 2025 |
| 1304 | OPTIMUS PRIME | Henderson County, TX | Oil & Gas Property | Dec 2024 |
| 1305 | OPUS | Hill County, TX | Oil & Gas Property | Aug 2025 |
| 1306 | OQUIN | Garfield County, OK | Oil & Gas Property | Jul 2025 |
| 1307 | OQUINN C. F | Rusk County, TX | Oil & Gas Property | Jul 2025 |
| 1308 | ORA 00 | Rio Arriba County, NM | Oil & Gas Property | Sep 2025 |
| 1309 | ORA BREEDLOVE | Sequoyah County, OK | Gas Property | Jul 2025 |
| 1310 | ORA JACKSON | Lea County, NM | Oil & Gas Property | Jan 1996 |
| 1311 | ORA JOHNSON | Knox County, OH | Oil & Gas Property | Dec 2024 |
| 1312 | ORA LAND | Creek County, OK | Oil Property | Nov 2024 |
| 1313 | ORA V. MARTIN | Kearny County, KS | Gas Property | Jun 2025 |
| 1314 | ORA YODER | Mayes County, OK | Oil Property | Jul 2025 |
| 1315 | ORACLE 21 FEDERAL | Eddy County, NM | Oil & Gas Property | Aug 2025 |
| 1316 | ORAN 4 | Palo Pinto County, TX | Oil & Gas Property | May 2025 |
| 1317 | ORAN W SHORT A | La Plata County, CO | Gas Property | Aug 2025 |
| 1318 | ORAN-PATTON | Palo Pinto County, TX | Oil & Gas Property | Sep 2012 |
| 1319 | ORAND | Freestone County, TX | Oil & Gas Property | Aug 2025 |
| 1320 | ORAND GAS UNIT NO. 1 | Freestone County, TX | Oil & Gas Property | Aug 2025 |
| 1321 | ORANGE | Orange County, CA | Oil & Gas Property | Sep 2025 |
| 1322 | ORANGE 2205 1 | Garfield County, OK | Oil & Gas Property | Jul 2025 |
| 1323 | ORANGE COAL | Noble County, OH | Oil & Gas Property | Dec 2019 |
| 1324 | ORANGE COAL | Noble County, OH | Oil & Gas Property | Dec 2024 |
| 1325 | ORANGE CRUSH UNIT 9 | Reeves County, TX | Oil & Gas Property | Aug 2025 |
| 1326 | ORANGE J | Monroe County, OH | Oil Property | Dec 2024 |
| 1327 | ORANGE RAIDER BPV STATE | Lea County, NM | Oil & Gas Property | Aug 2025 |
| 1328 | ORANGE SHERBET 17-10-6 | Grady County, OK | Oil & Gas Property | Aug 2025 |
| 1329 | ORANGE-GRAZIDE | Orange County, CA | Oil & Gas Property | Dec 1999 |
| 1330 | ORANGE-ROWLAND | Orange County, CA | Oil & Gas Property | Jul 2002 |
| 1331 | ORANGEVILLE | Emery County, UT | Gas Property | Jul 2024 |
| 1332 | ORANSKY M.B. ET AL | Freestone County, TX | Oil & Gas Property | Aug 2024 |
| 1333 | ORAVEC | Geauga County, OH | Oil & Gas Property | Dec 2024 |
| 1334 | ORBISON | Pittsburg County, OK | Oil & Gas Property | Jul 2025 |
| 1335 | ORBISON 28 | Reeves County, TX | Oil & Gas Property | Aug 2025 |
| 1336 | ORBISON BO | Lea County, NM | Oil & Gas Property | Aug 2025 |
| 1337 | ORBIT | Seminole County, OK | Oil & Gas Property | Jun 2025 |
| 1338 | ORBIT | Johnson County, WY | Oil & Gas Property | Aug 2025 |
| 1339 | ORBIT 1606 | Kingfisher County, OK | Oil & Gas Property | Jul 2025 |
| 1340 | ORBIT 24-13-12 | Williams County, ND | Oil & Gas Property | Aug 2025 |
| 1341 | ORBIT 51-7-21-16 | Reeves County, TX | Oil & Gas Property | Aug 2025 |
| 1342 | ORBWEAVER 149-92-32C-29H | Dunn County, ND | Oil & Gas Property | Aug 2025 |
| 1343 | ORC 21179 | Belmont County, OH | Gas Property | Jun 2025 |
| 1344 | ORC 211792 2A | Belmont County, OH | Gas Property | Jun 2025 |
| 1345 | ORCA FEDERAL | Mountrail County, ND | Oil & Gas Property | Aug 2025 |
| 1346 | ORCA UNIT NO | Brazos County, TX | Oil & Gas Property | Aug 2025 |
| 1347 | ORCAS STATE 5601 13-16 | Williams County, ND | Oil & Gas Property | Aug 2025 |
| 1348 | ORCHARD | Park County, WY | Oil & Gas Property | Aug 2025 |
| 1349 | ORCHARD | Kern County, CA | Oil & Gas Property | May 1988 |
| 1350 | ORCHARD | Mesa County, CO | Oil & Gas Property | Aug 2025 |
| 1351 | ORCHARD | Hot Springs County, WY | Oil & Gas Property | Aug 2025 |
| 1352 | ORCHARD 40 | Glasscock County, TX | Oil & Gas Property | Aug 2025 |
| 1353 | ORCHARD CS | Campbell County, WY | Gas Property | Dec 2015 |
| 1354 | ORCHARD L. B | Archer County, TX | Oil & Gas Property | Jan 2025 |
| 1355 | ORCHARD SB | Kern County, CA | Oil & Gas Property | Sep 2025 |
| 1356 | ORCHARD UNIT | Mesa County, CO | Oil & Gas Property | Aug 2025 |
| 1357 | ORCHID 1-13 | Campbell County, WY | Oil Property | Aug 2025 |
| 1358 | ORCUTT | Santa Barbara County, CA | Oil & Gas Property | Jul 2004 |
| 1359 | ORCUTT | Creek County, OK | Oil Property | Jun 2025 |
| 1360 | ORCUTT | Ventura County, CA | Oil & Gas Property | Sep 2025 |
| 1361 | ORCUTT | Chautauqua County, NY | Gas Property | Dec 2024 |
| 1362 | ORCUTT 1 | Los Angeles County, CA | Oil & Gas Property | Sep 2025 |
| 1363 | ORD NAN D | Young County, TX | Oil & Gas Property | Aug 2025 |
| 1364 | ORD, MAUDIE | Monongalia County, WV | Gas Property | Dec 2013 |
| 1365 | ORDEAN FEDERAL 5300 24-25T | Williams County, ND | Oil & Gas Property | Aug 2025 |
| 1366 | ORDUNO | Los Angeles County, CA | Oil & Gas Property | Aug 2025 |
| 1367 | ORDWAY | Rooks County, KS | Oil Property | Jun 2025 |
| 1368 | ORDWAY 1-26H | McKenzie County, ND | Oil & Gas Property | Aug 2025 |
| 1369 | ORE IDA 14 FEDERAL | Eddy County, NM | Oil & Gas Property | Aug 2025 |
| 1370 | OREAR, DANNY E | Doddridge County, WV | Oil & Gas Property | Dec 2021 |
| 1371 | OREDIGGER | Gonzales County, TX | Oil & Gas Property | Aug 2025 |
| 1372 | OREDIGGER | Howard County, TX | Oil & Gas Property | Aug 2025 |
| 1373 | OREILLY WA | Ector County, TX | Oil & Gas Property | Aug 2025 |
| 1374 | OREL HERSHISER 32-41 | Midland County, TX | Oil & Gas Property | Aug 2025 |
| 1375 | OREL HERSHISER 41-32 | Midland County, TX | Oil & Gas Property | Aug 2025 |
| 1376 | ORELIA RANCH | Frio County, TX | Oil & Gas Property | Aug 2025 |
| 1377 | ORELLA | Santa Barbara County, CA | Oil & Gas Property | Jan 1989 |
| 1378 | ORELLANA | Irion County, TX | Oil & Gas Property | Aug 2025 |
| 1379 | OREM | Moore County, TX | Gas Property | Aug 2025 |
| 1380 | OREN | Beckham County, OK | Oil & Gas Property | Jul 2025 |
| 1381 | OREN USA 31-6TFH | Mountrail County, ND | Oil & Gas Property | Sep 2025 |
| 1382 | ORENCHUK RUSSELL 11890 | Washington County, PA | Gas Property | Aug 2025 |
| 1383 | ORENDORFF-FRAZIER | Muskogee County, OK | Oil & Gas Property | Apr 2007 |
| 1384 | OREO | McIntosh County, OK | Gas Property | Dec 2024 |
| 1385 | ORF 1 | Caddo County, OK | Oil & Gas Property | Jul 2025 |
| 1386 | ORF 1-17H | McKenzie County, ND | Oil & Gas Property | Aug 2025 |
| 1387 | ORGAIN | Liberty County, TX | Oil & Gas Property | Jun 2025 |
| 1388 | ORGAIN | Roger Mills County, OK | Oil & Gas Property | Jul 2025 |
| 1389 | ORGAIN B. D | Hardin County, TX | Oil & Gas Property | Dec 2024 |
| 1390 | ORGAIN HEIRS | Bastrop County, TX | Oil & Gas Property | Aug 2025 |
| 1391 | ORGANIC | Midland County, TX | Oil & Gas Property | Aug 2025 |
| 1392 | ORIE LOVE | Sumner County, KS | Oil Property | Sep 2024 |
| 1393 | ORIENT | Kern County, CA | Oil & Gas Property | Sep 2025 |
| 1394 | ORIENT 1-12 | Howard County, TX | Oil & Gas Property | Aug 2025 |
| 1395 | ORIGAMI | Kern County, CA | Oil & Gas Property | Aug 2025 |
| 1396 | ORIN | Stephens County, OK | Oil & Gas Property | Jul 2025 |
| 1397 | ORIN FORTENBERRY GAS UNIT | Wise County, TX | Oil & Gas Property | Aug 2025 |
| 1398 | ORIN LEE NEAL | Jefferson County, PA | Gas Property | Dec 2024 |
| 1399 | ORINGDERFF | Ochiltree County, TX | Oil & Gas Property | Aug 2025 |
| 1400 | ORINGDERFF EATON | Ochiltree County, TX | Oil & Gas Property | Aug 2025 |