| East Harper Unit O-10-19904 | Aghorn Operating, Inc. only | Harper | Ector | 266 | 2.95M | 843K | Jan 1993 – Feb 2026 |
| Moss O-10-2470 | Walsh & Watts, Inc. only | Harper | Ector | 27 | 601K | 238K | Jan 1993 – Apr 2026 |
| TXL -A- O-10-2472 | Walsh & Watts, Inc. only | Harper | Ector | 11 | 476K | 98.9K | Jan 1993 – Apr 2026 |
| Parker -D- O-10-2471 | Walsh & Watts, Inc. only | Harper | Ector | 17 | 452K | 250K | Jan 1993 – Apr 2026 |
| TXL O-10-9280 | Burleson Petroleum, Inc. only | Harper | Ector | 5 | 253K | 125K | Jan 1993 – Apr 2026 |
| Parker, J. E. O-10-8549 | Shinnery Oil Company, Inc. only | Harper | Ector | 9 | 176K | 68.6K | Jan 1993 – Apr 2026 |
| Parker, J. E. O-10-2443 | Acoma Operating, LLC only | Harper | Ector | 22 | 167K | 132K | Jan 1993 – Apr 2026 |
| W. E. Cowden O-10-27887 | Baker Operating, Inc. only | Harper | Ector | 9 | 156K | 57.6K | Jan 1993 – Apr 2026 |
| Parker "A" O-10-2468 | Walsh & Watts, Inc. only | Harper | Ector | 15 | 151K | 254K | Jan 1993 – Apr 2026 |
| Parker "B" O-10-2469 | Walsh & Watts, Inc. only | Harper | Ector | 13 | 123K | 129K | Jan 1993 – Apr 2026 |
| Ector -AR- Fee O-10-18196 | Pen-Tex Production Co. Inc. only | Harper | Ector | 18 | 115K | 81.9K | Jan 1993 – Apr 2026 |
| Parker "A" O-10-2459 | Acoma Operating, LLC only | Harper | Ector | 6 | 114K | 8.41K | Jan 1993 – Mar 2026 |
| Moss, Paul -C- O-10-11169 | Aghorn Operating, Inc. only | Harper | Ector | 32 | 106K | 51.3K | Jan 1993 – Feb 2026 |
| Parker O-10-27704 | Pen-Tex Production Co. Inc. only | Harper | Ector | 5 | 105K | 149K | Jan 1993 – Apr 2026 |
| Ector -E- Fee /NCT-2/ O-10-16998 | Formentera Operations LLC only | Harper | Ector | 6 | 104K | 62.4K | Jan 1993 – Apr 2026 |
| Cowden, E. F. -a- - -B- O-10-2453 | Aghorn Operating, Inc. only | Harper | Ector | 17 | 103K | 36.4K | Jan 1993 – Feb 2026 |
| TXL O-10-2460 | Walsh & Watts, Inc. only | Harper | Ector | 5 | 103K | 2.23K | Jan 1993 – Apr 2026 |
| Moss, Paul '34' O-10-2452 | Aghorn Operating, Inc. only | Harper | Ector | 14 | 102K | 1.44K | Jan 1993 – Feb 2026 |
| Cowden-Oliver O-10-29350 | Baker Operating, Inc. only | Harper | Ector | 6 | 88K | 60K | Jan 1993 – Apr 2026 |
| Ector -AM- Fee O-10-35104 | Aghorn Operating, Inc. only | Harper | Ector | 2 | 86K | 98.6K | Apr 2000 – Feb 2026 |
| Cowden, Elliott F. O-10-2439 | Aghorn Operating, Inc. only | Harper | Ector | 6 | 78.7K | 46.5K | Jan 1993 – Jun 2011 |
| Parker O-10-25642 | Acoma Operating, LLC only | Harper | Ector | 4 | 73.8K | 54.9K | Jan 1993 – Apr 2026 |
| TXL -B- O-10-2473 | Walsh & Watts, Inc. only | Harper | Ector | 5 | 64.4K | 1.73K | Jan 1993 – Apr 2026 |
| Fraser, Geo. C. -B- O-10-2441 | Burleson Petroleum, Inc. only | Harper | Ector | 6 | 59.9K | 76.2K | Jan 1993 – Apr 2026 |
| Ector -T- Fee O-10-11684 | Pen-Tex Production Co. Inc. only | Harper | Ector | 10 | 56.8K | 38.1K | Jan 1993 – Apr 2026 |
| Cowden, W. E. O-10-29598 | Baker Operating, Inc. only | Harper | Ector | 9 | 53.4K | 9.73K | Jan 1993 – Mar 2026 |
| Ector -H- Fee O-10-9761 | Formentera Operations LLC only | Harper | Ector | 13 | 52.5K | 29.8K | Jan 1993 – Apr 2026 |
| Cowden -H- O-10-31683 | Baker Operating, Inc. only | Harper | Ector | 2 | 49.2K | 9.94K | Jan 1993 – Apr 2026 |
| Parker, J. E. -a- /EO/ O-10-8771 | Fivestones Energy LLC only | Harper | Ector | 7 | 46.5K | 32.9K | Jan 1993 – Sep 2025 |
| Parker Minerals 4 O-10-40857 | Crescent Energy Operating, LLC only | Harper | Ector | 4 | 43.6K | 53.6K | Dec 2010 – Apr 2026 |
| Parker, J. E. -A- O-10-26749 | Nicki T Oil & Gas LLC only | Harper | Ector | 3 | 40.5K | 27.3K | Jan 1993 – Mar 2026 |
| Cowden O-10-8488 | Baker Operating, Inc. only | Harper | Ector | 1 | 39K | 12.5K | Jan 1993 – Apr 2026 |
| Ector -G- Fee O-10-9554 | Pen-Tex Production Co. Inc. only | Harper | Ector | 6 | 34.9K | 80 | Jan 1993 – Apr 2026 |
| Ector -F- Fee O-10-9424 | Nicki T Oil & Gas LLC only | Harper | Ector | 2 | 32.9K | 48 | Jan 1993 – Mar 2026 |
| Cowden "B" Battery 2 O-10-30319 | Baker Operating, Inc. only | Harper | Ector | 3 | 32.3K | 60.8K | Jan 1993 – Dec 2025 |
| Parker, J. E. -B- O-10-25710 | Pen-Tex Production Co. Inc. only | Harper | Ector | 4 | 30.8K | 103K | Jan 1993 – Apr 2026 |
| Phillips-TXL-31- O-10-28715 | Rust Oil Corp. only | Harper | Ector | 4 | 29.8K | 18.4K | Jan 1993 – Mar 2024 |
| Cowden -A- O-10-11671 | Pinnacle Mining Corporation only | Harper | Ector | 4 | 29K | 15 | Aug 1996 – Aug 2015 |
| Parker Minerals 16 O-10-40439 | Acoma Operating, LLC only | Harper | Ector | 4 | 26.6K | 45.6K | Aug 2010 – Oct 2024 |
| Moss, Paul, Etal -A- O-10-8783 | Gray, W. H. Operating only | Harper | Ector | 1 | 25.5K | 6.88K | Jan 1993 – Apr 2026 |
| Argo-Moss -B- O-10-10475 | Aghorn Operating, Inc. only | Harper | Ector | 7 | 23.1K | 70.8K | Jan 1993 – Feb 2026 |
| Parker, et Al O-10-26687 | Nicki T Oil & Gas LLC only | Harper | Ector | 1 | 18.7K | 5.31K | Jan 1993 – Mar 2026 |
| Parker, J. E. -A- O-10-26667 | Pen-Tex Production Co. Inc. only | Harper | Ector | 2 | 18K | 29.2K | Jan 1993 – Apr 2026 |
| Parker -B- O-10-26870 | Crescent Energy Operating, LLC only | Harper | Ector | 2 | 16.9K | 24 | Jan 1993 – Sep 2017 |
| Parker Minerals 9A O-10-40916 | Crescent Energy Operating, LLC only | Harper | Ector | 1 | 16.2K | 22.1K | Jan 2011 – Apr 2026 |
| Ector -AN- Fee O-10-17784 | Nicki T Oil & Gas LLC only | Harper | Ector | 1 | 13.6K | 47 | Jan 1993 – Mar 2026 |
| Ector -E- Fee /NCT-1/ O-10-16997 | Formentera Operations LLC only | Harper | Ector | 2 | 13.2K | 19.9K | Apr 2002 – Apr 2026 |
| Moss -C- O-10-26675 | Drake Oil & Gas, LLC only | Harper | Ector | 5 | 11.2K | 21 | Jan 1993 – Oct 2020 |
| Parker O-10-20612 | Sheridan Production Company, LLC only | Harper | Ector | 3 | 8.06K | 4.37K | Jan 1993 – Oct 2010 |
| Argo-Moss O-10-10044 | Aghorn Operating, Inc. only | Harper | Ector | 12 | 7.81K | 1.41K | Jan 1993 – Apr 2023 |