| Elliott O-9-22162 | Hibernia Resources IV, LLC only | June Ann (Pennsylvanian) | Irion | 3 | 597K | 2.05M | May 2023 – Aug 2026 |
| Tres Hombres O-9-14301 | R2Q Operating LLC only | Hondo Pipeline (Ellenburger) | Irion | 1 | 557K | 524K | Dec 1995 – Aug 2026 |
| Orellana O-9-17610 | Sable Permian Resources, LLC only | Lin (Wolfcamp) | Irion | 4 | 269K | 4.26M | Jul 2011 – Feb 2020 |
| Deguello O-9-15431 | Discovery Natural Resources LLC only | Hondo Pipeline (Fusselman) | Irion | 1 | 264K | 230K | Jun 2003 – Feb 2025 |
| State "VD" O-9-7314 | Woodbine Production Corporation only | Irion 163 (Ellen) | Irion | 5 | 213K | 36.6K | by Jan 1993 – Jul 2026 |
| Orellana 'B' O-9-18020 | Sable Permian Resources, LLC only | Lin (Wolfcamp) | Irion | 3 | 175K | 2.11M | Jul 2012 – Feb 2020 |
| Orellana 'C' O-9-18118 | Sable Permian Resources, LLC only | Lin (Wolfcamp) | Irion | 3 | 172K | 2.28M | Dec 2012 – Feb 2020 |
| Orellana 'E' O-9-18712 | Sable Permian Resources, LLC only | Lin (Wolfcamp) | Irion | 3 | 170K | 3.07M | Jan 2014 – Feb 2020 |
| Pipeline "57" O-9-12891 | Prime Operating Company only | Hondo Pipeline (Ellenburger) | Irion | 1 | 152K | 166K | by Jan 1993 – Oct 2018 |
| Orellana 'K' O-9-18807 | Sable Permian Resources, LLC only | Lin (Wolfcamp) | Irion | 2 | 128K | 1.84M | Oct 2014 – Feb 2020 |
| Orellana 'D' O-9-18408 | Sable Permian Resources, LLC only | Lin (Wolfcamp) | Irion | 2 | 100K | 1.59M | Jan 2014 – Feb 2020 |
| Orellana "A" O-9-17787 | Sable Permian Resources, LLC only | Lin (Wolfcamp) | Irion | 2 | 98.6K | 1.01M | Feb 2012 – Feb 2020 |
| Orellana 'F' O-9-18353 | Sable Permian Resources, LLC only | Lin (Wolfcamp) | Irion | 2 | 91.5K | 1.55M | Oct 2013 – Feb 2020 |
| Orellana (AW) O-9-18717 | Sable Permian Resources, LLC only | Lin (Wolfcamp) | Irion | 1 | 77.9K | 1.7M | May 2013 – Feb 2020 |
| Orellana 'E' (AW) O-9-18713 | Sable Permian Resources, LLC only | Lin (Wolfcamp) | Irion | 1 | 73.8K | 1.14M | Jul 2014 – Feb 2020 |
| Orellana 'E' (SA) O-9-18711 | Sable Permian Resources, LLC only | Lin (Wolfcamp) | Irion | 1 | 70.7K | 1.01M | Jan 2014 – Feb 2020 |
| Orellana 'G' AW O-9-18709 | Sable Permian Resources, LLC only | Lin (Wolfcamp) | Irion | 1 | 54.1K | 1M | Oct 2013 – Feb 2020 |
| Orellana 'G' O-9-18354 | Sable Permian Resources, LLC only | Lin (Wolfcamp) | Irion | 1 | 49.2K | 677K | Oct 2013 – Feb 2020 |
| Brooks Unit O-9-4280 | Fratelli Exploration, L.P. only | Brooks (San Angelo) | Irion | 36 | 37.8K | 91 | by Jan 1993 – Jan 2024 |
| Linthicum, E.H. O-9-10477 | Socorro Exploration, Inc. only | Irion 163 (Ellen) | Irion | 5 | 32.7K | 4.66K | by Jan 1993 – Mar 1998 |
| Charlton, Mrs. G. T. O-9-3479 | Fratelli Exploration, L.P. only | Brooks, Southeast (San Angelo) | Irion | 2 | 20.9K | 101 | by Jan 1993 – Dec 2008 |
| Rocker "B" O-9-16270 | Pioneer Natural Res. USA, Inc. only | Sugg (Ellenburger) | Irion | 1 | 20.9K | 9.63K | Dec 2009 – Apr 2026 |
| Orellana 'C' O-9-20595 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 3 | 19.4K | 1.78M | Mar 2020 – Aug 2026 |
| Tweedy O-9-9625 | Fratelli Exploration, L.P. only | Brooks (San Angelo) | Irion | 9 | 18.3K | 91 | by Jan 1993 – Aug 2020 |
| Orellana O-9-20589 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 4 | 15K | 2.4M | Mar 2020 – Aug 2026 |
| Orellana 'E' O-9-20599 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 3 | 13.7K | 1.78M | Mar 2020 – Aug 2026 |
| Skelly-Sugg "45" O-9-6991 | Front Street Operating, LLC only | Rock Pen (Canyon) | Irion | 2 | 13.5K | 161K | by Jan 1993 – Sep 2017 |
| Orellana 'B' O-9-20597 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 3 | 13K | 1.09M | Mar 2020 – Aug 2026 |
| Tweedy "A" O-9-10832 | Fratelli Exploration, L.P. only | Brooks (San Angelo) | Irion | 2 | 11.8K | 91 | by Jan 1993 – Feb 2009 |
| Orellana 'K' O-9-20607 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 2 | 11.4K | 1.78M | Mar 2020 – Aug 2026 |
| Hoyt, Joan Crews O-9-22236 | Lode Holdings, LLC only | JD Nickell (Wolfcamp) | Irion | 3 | 10.6K | 9.64K | Aug 2022 – Jul 2026 |
| Murphey O-9-11517 | J & J Well Service, Inc. only | Baker Ranch (Canyon) | Irion | 3 | 10.2K | 145K | by Jan 1993 – Sep 2010 |
| Byler "B" O-9-11024 | Fratelli Exploration, L.P. only | Brooks (San Angelo) | Irion | 15 | 9.64K | 79 | by Jan 1993 – Nov 2024 |
| Orellana 'D' O-9-20598 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 2 | 9.05K | 830K | Mar 2020 – Aug 2026 |
| Brooks Unit O-9-11420 | Fratelli Exploration, L.P. only | Byler (San Angelo) | Irion | 1 | 8.83K | 91 | by Jan 1993 – Dec 2013 |
| Master of Sparks O-9-14417 | Queen Sand Operating Co. only | Hondo Pipeline (Ellenburger) | Irion | 1 | 8.36K | 7.71K | Jul 1996 – Apr 1997 |
| Orellana 'F' O-9-20602 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 2 | 7.42K | 937K | Mar 2020 – Aug 2026 |
| Orellana 'E' (SA) O-9-20601 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 1 | 6.04K | 552K | Mar 2020 – Aug 2026 |
| Byler -B- O-9-2777 | Fratelli Exploration, L.P. only | Byler (San Angelo) | Irion | 1 | 5.95K | 69 | by Jan 1993 – Nov 2024 |
| Orellana 'E' (AW) O-9-20600 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 1 | 5.91K | 750K | Mar 2020 – Aug 2026 |
| Sugg O-9-7768 | Cox, John L. only | Sugg (Ellenburger) | Irion | 3 | 5.76K | 39.5K | by Jan 1993 – Jul 1994 |
| Orellana 'G' AW O-9-20604 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 1 | 5.62K | 497K | Mar 2020 – Aug 2026 |
| Charlton O-9-10802 | Fratelli Exploration, L.P. only | Brooks, Southeast (San Angelo) | Irion | 2 | 5.54K | 91 | by Jan 1993 – Mar 2011 |
| Byler -A- O-9-3472 | Fratelli Exploration, L.P. only | Brooks, Southeast (San Angelo) | Irion | 5 | 5.34K | 102 | by Jan 1993 – Jul 2023 |
| Orellana (AW) O-9-20590 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 1 | 4.89K | 837K | Mar 2020 – Aug 2026 |
| Farmar -71- O-9-11590 | J & J Well Service, Inc. only | Andrew A. (Canyon) | Irion | 1 | 3.25K | 42 | by Jan 1993 – Jan 1998 |
| Orellana A O-9-20596 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 2 | 3.23K | 478K | Mar 2020 – Aug 2025 |
| Orellana 'G' O-9-20603 | Permian Resources Operating, LLC only | Spraberry (Trend Area) | Irion | 1 | 2.49K | 316K | Mar 2020 – Aug 2026 |
| Ellis "D" O-9-11182 | Brothers Production Company Inc. only | Dove Creek (Canyon -C-) | Irion | 2 | 2.47K | 18.7K | by Jan 1993 – May 1999 |
| Lindley, Frank -A- O-9-6014 | J & J Well Service, Inc. only | Christi (Canyon 6800) | Irion | 5 | 2.03K | 56.7K | by Jan 1993 – Jun 2006 |