| 28901 | OMNI-FRAZIER | Denton County, TX | Oil & Gas Property | Jan 2026 |
| 28902 | OMOHUNDRO | Wichita County, TX | Oil & Gas Property | Dec 2025 |
| 28903 | ONA 44-3 | Glasscock County, TX | Oil & Gas Property | Jan 2026 |
| 28904 | ONA BLACK 49 | Wheeler County, TX | Oil & Gas Property | Jan 2026 |
| 28905 | ONAH | Robertson County, TX | Oil & Gas Property | Jan 2026 |
| 28906 | ONAT | Jack County, TX | Oil & Gas Property | Jan 2026 |
| 28907 | ONDRASEK MELVIN | Burleson County, TX | Oil & Gas Property | Jul 1993 |
| 28908 | ONDRASEK OL UNIT | Burleson County, TX | Oil & Gas Property | Jan 2026 |
| 28909 | ONE EYED JOHN 522 | Yoakum County, TX | Oil & Gas Property | Jan 2026 |
| 28910 | ONEAL | Hutchinson County, TX | Oil & Gas Property | Jan 2025 |
| 28911 | ONEAL | Milam County, TX | Oil & Gas Property | Oct 2007 |
| 28912 | ONEAL | Gray County, TX | Oil & Gas Property | Oct 2020 |
| 28913 | ONEAL | Cooke County, TX | Oil & Gas Property | Jan 2026 |
| 28914 | ONEAL | Carson County, TX | Oil & Gas Property | Jan 2026 |
| 28915 | ONEAL | Midland County, TX | Oil & Gas Property | Jan 2024 |
| 28916 | ONEAL B. J. -NORTH | Upton County, TX | Oil & Gas Property | Jan 2017 |
| 28917 | ONEAL B. J. ETAL | Upton County, TX | Oil & Gas Property | Jan 2026 |
| 28918 | ONEAL B.G. ETAL | Stephens County, TX | Oil & Gas Property | Jan 2026 |
| 28919 | ONEAL GAS UNIT | Bee County, TX | Oil & Gas Property | Jan 2026 |
| 28920 | ONEAL SAN ANDRES UNIT | Upton County, TX | Oil & Gas Property | Jan 2017 |
| 28921 | ONEAL, R | Wise County, TX | Oil & Gas Property | Jan 2026 |
| 28922 | ONEAL, W. L | Smith County, TX | Oil & Gas Property | Jan 2026 |
| 28923 | ONEAL,BILL JOHN NE/4 SEC 5 UN | Upton County, TX | Oil & Gas Property | Jan 2026 |
| 28924 | ONEAL-ANNIE 15 | Midland County, TX | Oil & Gas Property | Jan 2026 |
| 28925 | ONEAL-DAVIS 15 | Midland County, TX | Oil & Gas Property | Jan 2026 |
| 28926 | ONEALL | Clay County, TX | Oil & Gas Property | Dec 2025 |
| 28927 | ONEIL | Bee County, TX | Oil & Gas Property | Nov 2025 |
| 28928 | ONEIL | Collingsworth County, TX | Oil & Gas Property | Jan 2026 |
| 28929 | ONEIL | Pecos County, TX | Oil & Gas Property | Dec 2018 |
| 28930 | ONEIL 4 | Martin County, TX | Oil & Gas Property | Jan 2026 |
| 28931 | ONEY | Reeves County, TX | Oil & Gas Property | Sep 2025 |
| 28932 | ONEY HENRY | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 28933 | ONYX | Crockett County, TX | Oil & Gas Property | Jan 2026 |
| 28934 | ONYX | Gonzales County, TX | Oil & Gas Property | Jan 2026 |
| 28935 | OPAL | Gonzales County, TX | Oil & Gas Property | Jan 2026 |
| 28936 | OPAL HV | Panola County, TX | Gas Property | Jan 2026 |
| 28937 | OPEN RANGE 28-29 | Martin County, TX | Oil & Gas Property | Jan 2026 |
| 28938 | OPEN UNIT | Howard County, TX | Oil & Gas Property | Jan 2026 |
| 28939 | OPIE | Ector County, TX | Oil & Gas Property | Jan 2026 |
| 28940 | OPIE TAYLOR | Martin County, TX | Oil & Gas Property | Jan 2026 |
| 28941 | OPIELA | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 28942 | OPIELA A | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 28943 | OPIELA UNIT | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 28944 | OPPENHEIMER | Frio County, TX | Oil & Gas Property | Jan 2026 |
| 28945 | OPPENHEIMER 188 | Reeves County, TX | Oil & Gas Property | Dec 2025 |
| 28946 | OPPENHEIMER, JESSIE D | Frio County, TX | Oil & Gas Property | Apr 2022 |
| 28947 | OPTIMUS PRIME | Henderson County, TX | Oil & Gas Property | Dec 2024 |
| 28948 | OPUS | Hill County, TX | Oil & Gas Property | Jan 2026 |
| 28949 | OQUINN C. F | Rusk County, TX | Oil & Gas Property | Nov 2025 |
| 28950 | ORA NELL UNIT | Fayette County, TX | Oil & Gas Property | Jan 2026 |
| 28951 | ORAN 4 | Palo Pinto County, TX | Oil & Gas Property | Dec 2025 |
| 28952 | ORAN-PATTON | Palo Pinto County, TX | Oil & Gas Property | Sep 2012 |
| 28953 | ORAND | Freestone County, TX | Oil & Gas Property | Jan 2026 |
| 28954 | ORAND GAS UNIT NO. 1 | Freestone County, TX | Oil & Gas Property | Jan 2026 |
| 28955 | ORANGE CRUSH UNIT 9 | Reeves County, TX | Oil & Gas Property | Jan 2026 |
| 28956 | ORANGE UNIT | Atascosa County, TX | Oil & Gas Property | Jan 2026 |
| 28957 | ORANSKY M.B. ET AL | Freestone County, TX | Oil & Gas Property | Aug 2024 |
| 28958 | ORBISON 28 | Reeves County, TX | Oil & Gas Property | Jan 2026 |
| 28959 | ORBIT 51-7-21-16 | Reeves County, TX | Oil & Gas Property | Jan 2026 |
| 28960 | ORCA UNIT NO | Brazos County, TX | Oil & Gas Property | Jan 2026 |
| 28961 | ORCHARD 40 | Glasscock County, TX | Oil & Gas Property | Jan 2026 |
| 28962 | ORCHARD L. B | Archer County, TX | Oil & Gas Property | Jan 2025 |
| 28963 | ORD NAN D | Young County, TX | Oil & Gas Property | Jan 2026 |
| 28964 | OREDIGGER | Gonzales County, TX | Oil & Gas Property | Jan 2026 |
| 28965 | OREDIGGER | Howard County, TX | Oil & Gas Property | Jan 2026 |
| 28966 | OREILLY WA | Ector County, TX | Oil & Gas Property | Jan 2026 |
| 28967 | OREL HERSHISER 32-41 | Midland County, TX | Oil & Gas Property | Jan 2026 |
| 28968 | OREL HERSHISER 41-32 | Midland County, TX | Oil & Gas Property | Jan 2026 |
| 28969 | ORELIA RANCH | Frio County, TX | Oil & Gas Property | Jan 2026 |
| 28970 | ORELLANA | Irion County, TX | Oil & Gas Property | Jan 2026 |
| 28971 | OREM | Moore County, TX | Gas Property | Jan 2026 |
| 28972 | ORGAIN | Liberty County, TX | Oil & Gas Property | Jan 2026 |
| 28973 | ORGAIN B. D | Hardin County, TX | Oil & Gas Property | Sep 2025 |
| 28974 | ORGAIN HEIRS | Bastrop County, TX | Oil & Gas Property | Dec 2025 |
| 28975 | ORGANIC | Midland County, TX | Oil & Gas Property | Jan 2026 |
| 28976 | ORIENT 1-12 | Howard County, TX | Oil & Gas Property | Jan 2026 |
| 28977 | ORIN FORTENBERRY GAS UNIT | Wise County, TX | Oil & Gas Property | Jan 2026 |
| 28978 | ORINGDERFF | Ochiltree County, TX | Oil & Gas Property | Jan 2026 |
| 28979 | ORINGDERFF EATON | Ochiltree County, TX | Oil & Gas Property | Jan 2026 |
| 28980 | ORION | Atascosa County, TX | Oil & Gas Property | Jan 2026 |
| 28981 | ORION | Loving County, TX | Oil & Gas Property | Jan 2026 |
| 28982 | ORION UNIT | Shelby County, TX | Gas Property | Jan 2026 |
| 28983 | ORIVE A | Starr County, TX | Oil & Gas Property | Jan 2026 |
| 28984 | ORLA | Reeves County, TX | Oil & Gas Property | Mar 2021 |
| 28985 | ORME CHARLSIE | Palo Pinto County, TX | Oil & Gas Property | Jan 2026 |
| 28986 | ORMS | Gregg County, TX | Oil & Gas Property | Jan 2026 |
| 28987 | ORMSBY | Johnson County, TX | Oil & Gas Property | Jan 2026 |
| 28988 | ORO NEGRO UNIT | Dewitt County, TX | Oil & Gas Property | Jan 2026 |
| 28989 | ORPHEUM | Reeves County, TX | Oil & Gas Property | Jan 2026 |
| 28990 | ORR A | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 28991 | ORR B | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 28992 | ORR C | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 28993 | ORR D | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 28994 | ORR J. B | Upshur County, TX | Oil & Gas Property | Dec 2021 |
| 28995 | ORR RANCH UNIT | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 28996 | ORR ROBERT | Milam County, TX | Oil & Gas Property | Jan 2026 |
| 28997 | ORR UNIT | Marion County, TX | Oil & Gas Property | Jan 2026 |
| 28998 | ORR UNIT | Karnes County, TX | Oil & Gas Property | Jan 2026 |
| 28999 | ORR UNIT | Ellis County, TX | Gas Property | Jan 2026 |
| 29000 | ORR WILLIAM | Wise County, TX | Oil & Gas Property | Jan 2026 |