| "CG" 117 O-10-37031 | E.G.L. Resources, Inc. only | Coyanosa, N. (Delaware) | Pecos | 1 | 3.2K | 22.3K | Dec 2002 – Jun 2003 |
| Roberta "J" O-10-24828 | Burleson, Lewis B. Inc. only | Belding (Yates) | Pecos | 2 | 3.17K | 23 | by Jan 1993 – Jul 1994 |
| Taft G-10-71528 | Olsen Energy Inc. only | Lehn-Apco, S. (Wichita-Albany) | Pecos | 1 | 3.16K | 354K | by Jan 1993 – Apr 2023 |
| Williams O-10-20262 | Mosaic Midland LLC only | Pecos Valley (High Gravity) | Pecos | 1 | 3.16K | 20 | by Jan 1993 – Sep 2021 |
| Thigpin, J. N. "B" G-10-87572 | Hendrix, John H. Corporation only | Thigpin (Devonian) | Pecos | 1 | 3.15K | 1.13M | by Jan 1993 – Oct 1998 |
| Shearer, W. T., -B- O-10-20002 | Hydrogeo Energy, LLC only | Lehn-Apco, North (1600) | Pecos | 4 | 3.14K | 97 | by Jan 1993 – Dec 2020 |
| Riggs, Ernest, -B- O-10-1516 | Apache Corporation only | Fort Stockton | Pecos | 2 | 3.14K | 12 | by Jan 1993 – Sep 1995 |
| Longfellow G-10-165275 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.14K | 1.48M | Jul 1997 – Jan 2026 |
| Robbins, J. W. 1A G-10-183046 | XTO Energy Inc. only | Puckett (Strawn) | Pecos | 1 | 3.13K | 614K | Apr 2001 – Jul 2019 |
| West Ranch G-10-234742 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.12K | 210K | Oct 2007 – Dec 2024 |
| White & Baker -B- O-10-7158 | Oilex Int'l Investments, Inc. only | Walker | Pecos | 2 | 3.12K | 21 | by Jan 1993 – Apr 1998 |
| Brandenburg -C- O-10-10854 | Core E & P Corp. only | Netterville | Pecos | 5 | 3.11K | 100 | by Jan 1993 – Sep 2002 |
| West Ranch G-10-248294 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.11K | 915K | Sep 2007 – Jan 2025 |
| West Ranch G-10-186278 | Sandridge Energy, Inc. only | Bitterweed | Pecos | 1 | 3.11K | 1.09M | Oct 2001 – Jun 2007 |
| Berry State 120 O-10-46698 | Last Mile Production, LLC only | Brooklaw (Clear Fork, Lower) | Pecos | 1 | 3.1K | 1.09K | Apr 2011 – Aug 2014 |
| West Ranch 138 G-10-240178 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.09K | 614K | May 2008 – Aug 2026 |
| Hodge, J. H. G-10-32609 | Oryx Energy Company only | Waha (Delaware) | Pecos | 1 | 3.05K | 30K | by Jan 1993 – Jan 1994 |
| White&baker -E- /Stanolind -B-/ O-10-7178 | Oilex Int'l Investments, Inc. only | Walker | Pecos | 4 | 3.05K | 21 | by Jan 1993 – Apr 1998 |
| University "C" G-10-114399 | Olsen Energy Inc. only | Putnam (Wichita-Albany) | Pecos | 1 | 3.04K | 491K | by Jan 1993 – Feb 2023 |
| West State G-10-248436 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.04K | 347K | Dec 2008 – Aug 2026 |
| Blackstone O-10-34224 | COG Operating LLC only | Shocker (Queen) | Pecos | 2 | 3.03K | 42.1K | Jun 1994 – Sep 2009 |
| University -A- O-10-25832 | Primal Energy Corporation only | Leon Valley (Obrien) | Pecos | 2 | 3.03K | 9.44K | by Jan 1993 – Apr 2008 |
| Duval-State O-10-26496 | Genesis Exploration LLC only | Heiner, S. (Wolfcamp) | Pecos | 1 | 3.03K | 87.4K | Jan 2004 – Aug 2026 |
| West Ranch G-10-272791 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 3.01K | 482K | Dec 2010 – Oct 2024 |
| Iowa Realty Trust -A- O-10-25895 | Pedco Resources Company only | Lehn-Apco, South (Ellen) | Pecos | 1 | 3K | 493 | by Jan 1993 – Nov 1993 |
| Valley 3 G-10-159047 | Last Mile Production, LLC only | Owego (Tubb) | Pecos | 1 | 2.98K | 343K | Jun 1996 – Nov 2022 |
| Becken 65 G-10-133446 | Olsen Energy Inc. only | Chenot, N. (Wichita Albany) | Pecos | 1 | 2.97K | 293K | by Jan 1993 – Jul 2005 |
| West Ranch G-10-212501 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.97K | 2.29M | Sep 2005 – Aug 2026 |
| Coyanosa Unit No. 4 G-10-39846 | XTO Energy Inc. only | Coyanosa (Ellenburger) | Pecos | 1 | 2.96K | 8.9M | by Jan 1993 – Aug 2026 |
| Blaydes O-10-10378 | Bebco Parts Industries, Inc. only | Pecos Valley (High Gravity) | Pecos | 3 | 2.96K | 19 | Feb 1993 – Sep 2002 |
| Atticus 45 O-10-51654 | Caird Operating, LLC only | Hoefs T-K (Wolfcamp) | Pecos | 1 | 2.95K | 8.13K | Jan 2018 – Feb 2019 |
| Cordova Union E O-10-27185 | Avra Oil Company only | Lehn-Apco (Yates) | Pecos | 1 | 2.95K | 5.38K | by Jan 1993 – Oct 2008 |
| Donna State East Unit O-10-48074 | Halcon Operating Co., Inc. only | Phantom (Wolfcamp) | Pecos | 1 | 2.95K | 3.65K | Jan 2022 – Jan 2022 |
| West Ranch O-10-38410 | Occidental W TX Overthrust, Inc. only | Allison Ranch (Wolfcamp) | Pecos | 1 | 2.94K | 35.8K | May 2007 – Jun 2017 |
| University -C- O-10-6726 | M.A.R.S. Energy only | Taylor Link | Pecos | 2 | 2.93K | 60 | by Jan 1993 – May 2026 |
| Robbins, Jerusha et al "A" G-10-156175 | Chevron U. S. A. Inc. only | Chimichanga (Wolfcamp) | Pecos | 1 | 2.91K | 16.8K | Aug 1995 – Jun 1996 |
| Chalkley "A" G-10-76404 | Olsen Energy Inc. only | Lehn-Apco, S. (Wichita-Albany) | Pecos | 1 | 2.91K | 678K | by Jan 1993 – Jan 2025 |
| Gray, Nelle -A- O-10-25982 | Saguaro Petroleum, LLC only | Four C (Clear Fork, Middle) | Pecos | 1 | 2.89K | 45.2K | by Jan 1993 – Jul 2026 |
| West Ranch G-10-140878 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.88K | 703K | Oct 1993 – Aug 2026 |
| Millar, L. H. 43 O-10-36250 | Westport Oil and Gas Company, LP only | Wentz (Wichita-Albany) | Pecos | 1 | 2.87K | 13.7K | Jan 2000 – Apr 2000 |
| Mays G-10-145971 | Southwest Royalties, Inc. only | Hokit (Ellen.) | Pecos | 1 | 2.86K | 193K | Jun 1993 – Mar 1997 |
| Mays, Gene (Sec. 17) O-10-40276 | Southwest Royalties, Inc. only | Hokit (Leonard) | Pecos | 1 | 2.85K | 8.61K | Jan 2010 – Jan 2011 |
| Woodward "56" G-10-191307 | Reatta Energy, Inc. only | Putnam (Wolfcamp) | Pecos | 1 | 2.85K | 1.1M | Sep 2002 – Jan 2022 |
| La Escalera 49-D Ltd TRC IV G-10-161405 | Longfellow Energy, LP only | Elsinore (Wolfcamp) | Pecos | 1 | 2.85K | 1.94M | Sep 1996 – Jun 2025 |
| Millar, L. H. et Al G-10-168034 | Olsen Energy Inc. only | Wentz (San Andres) | Pecos | 1 | 2.84K | 95.6K | May 1998 – Mar 2024 |
| West Ranch G-10-239059 | Longfellow Energy, LP only | Pinon (Overthrust) | Pecos | 1 | 2.82K | 24.5K | Feb 2008 – Apr 2023 |
| Neal, James O. O-10-45752 | XTO Energy Inc. only | Wolfbone (Trend Area) | Pecos | 1 | 2.81K | 12.1K | Feb 2014 – Aug 2018 |
| Gomez West Unit No. 2 G-10-67280 | Chevron Midcontinent, L.P. only | Gomez (Wolfcamp) | Pecos | 1 | 2.8K | 411K | Nov 1997 – Oct 2020 |
| Blackstone O-10-36970 | COG Operating LLC only | Pecos Valley (High Gravity) | Pecos | 1 | 2.8K | 9.47K | Apr 2002 – Jun 2009 |
| Jeff O-10-26843 | Cardwell Oil Corporation only | Abell (Clear Fork Upper) | Pecos | 1 | 2.79K | 105 | by Jan 1993 – Aug 2026 |