| 94201 | OLSON-JENNY | Toole County, MT | Gas Property | Jan 2025 |
| 94202 | OLSON-JENSEN | Petroleum County, MT | Oil Property | Sep 1993 |
| 94203 | OLSON-SMITH | La Plata County, CO | Gas Property | Mar 2025 |
| 94204 | OLSSON | Saline County, KS | Oil Property | Jul 2002 |
| 94205 | OLSSON | Moore County, TX | Gas Property | Feb 2025 |
| 94206 | OLSWICK CS | Campbell County, WY | Gas Property | Apr 2019 |
| 94207 | OLTJENBRUNS | Phillips County, CO | Gas Property | Aug 2023 |
| 94208 | OLTMANN | Madison County, TX | Oil & Gas Property | Jan 2025 |
| 94209 | OLTMANN | Finney County, KS | Gas Property | Sep 2005 |
| 94210 | OLTMANNS | Barton County, KS | Oil Property | Jan 2025 |
| 94211 | OLTMANNS | Kingfisher County, OK | Oil & Gas Property | Feb 2025 |
| 94212 | OLUFSEN | Howard County, TX | Oil & Gas Property | Jul 2023 |
| 94213 | OLVER | Jefferson County, OK | Oil Property | Jan 2025 |
| 94214 | OLYMPIA | Lincoln County, OK | Oil & Gas Property | Mar 2025 |
| 94215 | OLYMPIA | Williams County, ND | Oil & Gas Property | Mar 2025 |
| 94216 | OLYMPIA 57-56 | Fisher County, TX | Oil & Gas Property | Feb 2025 |
| 94217 | OLYMPIA CORTE DYAS | Baldwin County, AL | Gas Property | Mar 1987 |
| 94218 | OLYMPIA MIN | Sabine Parish, LA | Gas Property | Dec 2024 |
| 94219 | OLYMPIA MIN | Sabine Parish, LA | Gas Property | Dec 2024 |
| 94220 | OLYMPIA MIN | De Soto Parish, LA | Gas Property | Dec 2024 |
| 94221 | OLYMPIA MINERALS | Beauregard Parish, LA | Oil Property | Dec 2024 |
| 94222 | OLYMPIA MINERALS | Sabine Parish, LA | Oil Property | Dec 2024 |
| 94223 | OLYMPIA MINERALS | Sabine Parish, LA | Oil & Gas Property | Dec 2024 |
| 94224 | OLYMPIA MINERALS | Beauregard Parish, LA | Oil & Gas Property | Jan 2025 |
| 94225 | OLYMPIA MINERALS | Sabine Parish, LA | Gas Property | Dec 2024 |
| 94226 | OLYMPIAN | Duchesne County, UT | Oil & Gas Property | Feb 2025 |
| 94227 | OLYMPIC | Gonzales County, TX | Oil & Gas Property | Feb 2025 |
| 94228 | OLYMPIC | Carbon County, WY | Oil & Gas Property | Nov 2024 |
| 94229 | OLYMPIC | San Juan County, NM | Oil & Gas Property | Mar 2025 |
| 94230 | OLYMPIC 54-2-7 | Loving County, TX | Oil & Gas Property | Feb 2025 |
| 94231 | OLYMPIC COMMUNITY | Los Angeles County, CA | Oil & Gas Property | Feb 2025 |
| 94232 | OLYMPIC LAKE ESTATES 07 083 0 | Susquehanna County, PA | Gas Property | Mar 2025 |
| 94233 | OLYMPUS | Lipscomb County, TX | Oil & Gas Property | Feb 2025 |
| 94234 | OLYMPUS 1 | Ness County, KS | Oil Property | Jan 2025 |
| 94235 | OLYMPUS 1107 1 | Canadian County, OK | Oil & Gas Property | Feb 2025 |
| 94236 | OLYPHANT 57-T1-43X42 1H | Reeves County, TX | Oil & Gas Property | Feb 2025 |
| 94237 | OM ERICKSON 5501 11-18 4B | Williams County, ND | Oil & Gas Property | Mar 2025 |
| 94238 | OMA MCMICHAEL GAS UNIT | Freestone County, TX | Oil & Gas Property | Feb 2025 |
| 94239 | OMAHA | Irion County, TX | Oil & Gas Property | Feb 2025 |
| 94240 | OMAHA | Carter County, OK | Oil & Gas Property | Mar 2025 |
| 94241 | OMAHA | Kern County, CA | Oil & Gas Property | Feb 2025 |
| 94242 | OMAHA 11 | Reeves County, TX | Oil & Gas Property | Feb 2025 |
| 94243 | OMAHA 15 | Hemphill County, TX | Oil & Gas Property | Feb 2025 |
| 94244 | OMAHA 175-176 | Ward County, TX | Oil & Gas Property | Feb 2025 |
| 94245 | OMAHA HOTEL | Ness County, KS | Oil Property | Jan 2011 |
| 94246 | OMAHA WOMAN 24-13-12H | McKenzie County, ND | Oil & Gas Property | Mar 2025 |
| 94247 | OMAHA-WYOMING | Uinta County, WY | Oil & Gas Property | Oct 2024 |
| 94248 | OMAITS SMF JF | Jefferson County, OH | Gas Property | Dec 2024 |
| 94249 | OMALLEY 1 | Washington County, TX | Oil & Gas Property | Feb 2025 |
| 94250 | OMAN | Carbon County, UT | Gas Property | Mar 2016 |
| 94251 | OMAN | Jones County, TX | Oil Property | Jan 2022 |
| 94252 | OMAN KAROLYN | Shackelford County, TX | Oil & Gas Property | Dec 2019 |
| 94253 | OMAR | Kern County, CA | Oil & Gas Property | Feb 2025 |
| 94254 | OMAR | Williams County, ND | Oil & Gas Property | Mar 2025 |
| 94255 | OMAR | Williams County, ND | Oil & Gas Property | Mar 2025 |
| 94256 | OMB 1 | Kern County, CA | Oil & Gas Property | Mar 2018 |
| 94257 | OMB 2 | Kern County, CA | Oil & Gas Property | Jun 2014 |
| 94258 | OMB 3 | Kern County, CA | Oil & Gas Property | Jan 2007 |
| 94259 | OMB 4 | Kern County, CA | Oil & Gas Property | Sep 2015 |
| 94260 | OMEGA | Ventura County, CA | Oil Property | Sep 1998 |
| 94261 | OMEGA 2308 03 | San Juan County, NM | Oil & Gas Property | Mar 2025 |
| 94262 | OMEGA UNIT | Gonzales County, TX | Oil & Gas Property | Feb 2025 |
| 94263 | OMELET 151-94-16B-21H | McKenzie County, ND | Oil & Gas Property | Mar 2025 |
| 94264 | OMELETTE STATE | Eddy County, NM | Oil & Gas Property | Mar 2025 |
| 94265 | OMELVENY PARK | Los Angeles County, CA | Oil & Gas Property | Mar 2025 |
| 94266 | OMER | Garvin County, OK | Oil & Gas Property | Feb 2025 |
| 94267 | OMER BECHTOL | Coshocton County, OH | Oil & Gas Property | Dec 2023 |
| 94268 | OMLER | San Juan County, NM | Oil & Gas Property | Mar 2025 |
| 94269 | OMLID | McKenzie County, ND | Oil & Gas Property | Mar 2025 |
| 94270 | OMLID | McKenzie County, ND | Oil & Gas Property | Mar 2025 |
| 94271 | OMMEN | Dewey County, OK | Oil & Gas Property | Mar 2025 |
| 94272 | OMNI-FRAZIER | Denton County, TX | Oil & Gas Property | Feb 2025 |
| 94273 | OMOHUNDRO | Wichita County, TX | Oil & Gas Property | Dec 2024 |
| 94274 | OMR (02-188 | Tioga County, PA | Gas Property | Mar 2025 |
| 94275 | OMURA 148-93-05D-06H | Dunn County, ND | Oil & Gas Property | Mar 2025 |
| 94276 | ON THE BRINK 843-3 | Phillips County, CO | Gas Property | Sep 2023 |
| 94277 | ONA 44-3 | Glasscock County, TX | Oil & Gas Property | Feb 2025 |
| 94278 | ONA BLACK 49 | Wheeler County, TX | Oil & Gas Property | Feb 2025 |
| 94279 | ONAH | Robertson County, TX | Oil & Gas Property | Feb 2025 |
| 94280 | ONAN | Henderson County, KY | Oil Property | Oct 2015 |
| 94281 | ONAN | Union County, KY | Oil Property | Nov 2023 |
| 94282 | ONAT | Jack County, TX | Oil & Gas Property | Feb 2025 |
| 94283 | ONC 00 | Los Angeles County, CA | Oil & Gas Property | Mar 2025 |
| 94284 | OND 0 | Los Angeles County, CA | Oil & Gas Property | Mar 2025 |
| 94285 | OND 1-2 | Rush County, KS | Oil Property | Jan 2025 |
| 94286 | ONDRASEK | Rooks County, KS | Oil Property | Jan 2025 |
| 94287 | ONDRASEK OL UNIT | Burleson County, TX | Oil & Gas Property | Jan 2025 |
| 94288 | ONE EYED JOHN 522 | Yoakum County, TX | Oil & Gas Property | Feb 2025 |
| 94289 | ONE FEATHER USA | McLean County, ND | Oil & Gas Property | Mar 2025 |
| 94290 | ONEAL | Midland County, TX | Oil & Gas Property | Jan 2024 |
| 94291 | ONEAL | Franklin County, AR | Gas Property | Jun 2024 |
| 94292 | ONEAL | Pittsburg County, OK | Gas Property | Feb 2025 |
| 94293 | ONEAL | Milam County, TX | Oil & Gas Property | Oct 2007 |
| 94294 | ONEAL | Cooke County, TX | Oil & Gas Property | Feb 2025 |
| 94295 | ONEAL | Rapides Parish, LA | Oil & Gas Property | Dec 2024 |
| 94296 | ONEAL | Hutchinson County, TX | Oil & Gas Property | Jan 2025 |
| 94297 | ONEAL | Carson County, TX | Oil & Gas Property | Feb 2025 |
| 94298 | ONEAL | Grady County, OK | Oil & Gas Property | Feb 2025 |
| 94299 | ONEAL | Grady County, OK | Oil & Gas Property | Feb 2025 |
| 94300 | ONEAL 09-16 | Conway County, AR | Gas Property | Jul 2024 |