| 1201 | ONEILL B | Eddy County, NM | Oil & Gas Property | Mar 2025 |
| 1202 | ONEILL FAMILY TRUST ET AL | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 1203 | ONEILL FEDERAL | Eddy County, NM | Gas Property | Jan 2020 |
| 1204 | ONEILL, BETTY J. - TRST | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 1205 | ONEILL, ROBERT | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 1206 | ONEKAMA | Manistee County, MI | Oil & Gas Property | Apr 2025 |
| 1207 | ONEY | Reeves County, TX | Oil & Gas Property | Feb 2025 |
| 1208 | ONEY ALTON J. GAS UNIT 1H | Harrison County, TX | Oil & Gas Property | Mar 2025 |
| 1209 | ONEY HENRY | Harrison County, TX | Oil & Gas Property | Mar 2025 |
| 1210 | ONEZIME | Acadia Parish, LA | Oil & Gas Property | Jan 2025 |
| 1211 | ONGSTAD | Williams County, ND | Oil & Gas Property | Dec 2024 |
| 1212 | ONIFRO O | McKean County, PA | Oil & Gas Property | Dec 2005 |
| 1213 | ONION | Haskell County, KS | Oil & Gas Property | Feb 2025 |
| 1214 | ONION 1907-0 | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 1215 | ONIONS | Haskell County, KS | Gas Property | Feb 2025 |
| 1216 | ONIONS | Haskell County, KS | Gas Property | Feb 2025 |
| 1217 | ONSTAD | Sheridan County, MT | Oil & Gas Property | Mar 2025 |
| 1218 | ONSTOTT | Daviess County, KY | Oil Property | Feb 2008 |
| 1219 | ONYX | Crockett County, TX | Oil & Gas Property | Feb 2025 |
| 1220 | ONYX | Gonzales County, TX | Oil & Gas Property | Mar 2025 |
| 1221 | ONYX 35 FEDERAL COM | Lea County, NM | Oil & Gas Property | Mar 2025 |
| 1222 | ONYX FEDERAL | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 1223 | ONYX PWU 29 | Eddy County, NM | Oil & Gas Property | Mar 2025 |
| 1224 | OOOGURUK | Harrison Bay Offshore, AK | Oil & Gas Property | Apr 2025 |
| 1225 | OORAH | Grady County, OK | Oil & Gas Property | Feb 2025 |
| 1226 | OP 16 | Uintah County, UT | Oil & Gas Property | Mar 2025 |
| 1227 | OP 1G | Uintah County, UT | Oil & Gas Property | Mar 2025 |
| 1228 | OP 4G | Uintah County, UT | Oil & Gas Property | Mar 2025 |
| 1229 | OPACIC | Westmoreland County, PA | Oil & Gas Property | Dec 2024 |
| 1230 | OPAL | Lincoln County, WY | Oil & Gas Property | Mar 2025 |
| 1231 | OPAL | Beckham County, OK | Oil & Gas Property | Mar 2025 |
| 1232 | OPAL | Okmulgee County, OK | Gas Property | Dec 2014 |
| 1233 | OPAL | Major County, OK | Oil & Gas Property | Oct 2024 |
| 1234 | OPAL | Gonzales County, TX | Oil & Gas Property | Mar 2025 |
| 1235 | OPAL | Lincoln County, WY | Oil & Gas Property | Mar 2025 |
| 1236 | OPAL | Lincoln County, WY | Oil & Gas Property | Apr 2025 |
| 1237 | OPAL 148-95-03A-10H | McKenzie County, ND | Oil & Gas Property | Apr 2025 |
| 1238 | OPAL 2810 | Alfalfa County, OK | Oil & Gas Property | Feb 2025 |
| 1239 | OPAL 31 | Ellis County, OK | Oil & Gas Property | Mar 2025 |
| 1240 | OPAL 36 STATE | Lea County, NM | Oil & Gas Property | Mar 2025 |
| 1241 | OPAL BENCH | Lincoln County, WY | Oil & Gas Property | Oct 2015 |
| 1242 | OPAL BOYD | Union Parish, LA | Gas Property | Dec 2024 |
| 1243 | OPAL BROWN | Nowata County, OK | Gas Property | Feb 2021 |
| 1244 | OPAL CASSIDY | Tillman County, OK | Oil Property | Nov 2024 |
| 1245 | OPAL FED 3467-1628 | Converse County, WY | Oil & Gas Property | Apr 2025 |
| 1246 | OPAL HV | Panola County, TX | Gas Property | Mar 2025 |
| 1247 | OPAL LECHNER A | La Plata County, CO | Gas Property | Mar 2025 |
| 1248 | OPAL REED | Beckham County, OK | Oil & Gas Property | Feb 2025 |
| 1249 | OPAQUE | Kern County, CA | Oil Property | Dec 2024 |
| 1250 | OPATRIL | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 1251 | OPC 1 | Washakie County, WY | Oil & Gas Property | Mar 2025 |
| 1252 | OPDYCKE | Russell County, KS | Oil Property | Feb 2025 |
| 1253 | OPDYKE | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 1254 | OPDYKE | Ellis County, KS | Oil Property | Jul 1984 |
| 1255 | OPEDAHL 21X-11 | Williams County, ND | Oil & Gas Property | Apr 2025 |
| 1256 | OPEE 1-23H | Burke County, ND | Oil & Gas Property | Apr 2025 |
| 1257 | OPEL | Weld County, CO | Oil & Gas Property | Jan 2021 |
| 1258 | OPEN RANGE 28-29 | Martin County, TX | Oil & Gas Property | Mar 2025 |
| 1259 | OPEN UNIT | Howard County, TX | Oil & Gas Property | Mar 2025 |
| 1260 | OPHELIA 22 | Lea County, NM | Oil & Gas Property | Mar 2025 |
| 1261 | OPHELIA 27 | Lea County, NM | Oil & Gas Property | Mar 2025 |
| 1262 | OPI-NLF | Sutter County, CA | Oil & Gas Property | Dec 2012 |
| 1263 | OPIE | Ector County, TX | Oil & Gas Property | Mar 2025 |
| 1264 | OPIE TAYLOR | Martin County, TX | Oil & Gas Property | Mar 2025 |
| 1265 | OPIELA | Karnes County, TX | Oil & Gas Property | Mar 2025 |
| 1266 | OPIELA A | Karnes County, TX | Oil & Gas Property | Feb 2025 |
| 1267 | OPIELA UNIT | Karnes County, TX | Oil & Gas Property | Mar 2025 |
| 1268 | OPIS 1 | Banner County, NE | Oil Property | Dec 2019 |
| 1269 | OPITZ | Caddo County, OK | Oil & Gas Property | Dec 2024 |
| 1270 | OPITZ | Caddo County, OK | Oil & Gas Property | Feb 2025 |
| 1271 | OPITZ | Caddo County, OK | Oil & Gas Property | Feb 2025 |
| 1272 | OPL 3 STATE | Lea County, NM | Oil & Gas Property | Apr 2025 |
| 1273 | OPL EAGLE 35 FEDERAL | Eddy County, NM | Oil & Gas Property | Mar 2025 |
| 1274 | OPL TWIN BERRY STATE | Lea County, NM | Oil & Gas Property | Apr 2025 |
| 1275 | OPLIGER | Wayne County, OH | Oil & Gas Property | Dec 2024 |
| 1276 | OPLOTNIK | Crawford County, KS | Oil Property | Dec 2024 |
| 1277 | OPPEBOEN | Mountrail County, ND | Oil & Gas Property | Apr 2025 |
| 1278 | OPPEGAARD | Williams County, ND | Oil & Gas Property | Apr 2025 |
| 1279 | OPPEL | Kingfisher County, OK | Oil & Gas Property | Mar 2025 |
| 1280 | OPPEL | Kingfisher County, OK | Oil & Gas Property | Oct 2019 |
| 1281 | OPPEL | Blaine County, OK | Oil & Gas Property | Feb 2025 |
| 1282 | OPPEL | Canadian County, OK | Oil & Gas Property | Feb 2025 |
| 1283 | OPPELT | Campbell County, WY | Gas Property | May 2012 |
| 1284 | OPPENHEIMER | Frio County, TX | Oil & Gas Property | Feb 2025 |
| 1285 | OPPENHEIMER 188 | Reeves County, TX | Oil & Gas Property | Feb 2025 |
| 1286 | OPPENHEIMER JESSIE D | Frio County, TX | Oil & Gas Property | Apr 2022 |
| 1287 | OPPY | Hodgeman County, KS | Oil Property | May 1994 |
| 1288 | OPSETH | Burke County, ND | Oil & Gas Property | Apr 2025 |
| 1289 | OPTIMO | Marshall County, OK | Oil & Gas Property | Mar 2025 |
| 1290 | OPTIMUS PRIME | Henderson County, TX | Oil & Gas Property | Dec 2024 |
| 1291 | OPUS | Hill County, TX | Oil & Gas Property | Feb 2025 |
| 1292 | OQUIN | Garfield County, OK | Oil & Gas Property | Feb 2025 |
| 1293 | OQUINN C. F | Rusk County, TX | Oil & Gas Property | Feb 2025 |
| 1294 | ORA 00 | Rio Arriba County, NM | Oil & Gas Property | Apr 2025 |
| 1295 | ORA BREEDLOVE | Sequoyah County, OK | Gas Property | Feb 2025 |
| 1296 | ORA JACKSON | Lea County, NM | Oil & Gas Property | Jan 1996 |
| 1297 | ORA JOHNSON | Knox County, OH | Oil & Gas Property | Dec 2024 |
| 1298 | ORA LAND | Creek County, OK | Oil Property | Nov 2024 |
| 1299 | ORA LEE 13-11-26 2H | Roger Mills County, OK | Oil & Gas Property | Feb 2025 |
| 1300 | ORA V. MARTIN | Kearny County, KS | Gas Property | Feb 2025 |