| Foster, H. O-10-22457 | Occidental Permian Ltd. only | Cowden, South (Canyon 8790) | Ector | 8 | 1.78M | 1.37M | by Jan 1993 – Aug 2026 |
| Moss,paul South(canyon 8790)UNIT O-10-32791 | R3 Operating Corporation only | Cowden, South (Canyon 8790) | Ector | 36 | 1.64M | 1.3M | by Jan 1993 – Aug 2026 |
| Cowden, Elliott F. -A- O-10-21384 | Occidental Permian Ltd. only | Cowden, South (Canyon 8790) | Ector | 53 | 1.51M | 632K | by Jan 1993 – Aug 2026 |
| Foster 8 O-10-37284 | OXY USA WTP LP only | Cowden, South (Canyon 8790) | Ector | 3 | 999K | 911K | Feb 2004 – Aug 2026 |
| Witcher, J. E. 19 O-10-37061 | OXY USA WTP LP only | Cowden, South (Canyon 8790) | Ector | 2 | 824K | 887K | Mar 2003 – Aug 2026 |
| Johnson -B-36- O-10-31640 | OXY USA Inc. only | Cowden, North (Canyon) | Ector | 7 | 690K | 506K | by Jan 1993 – Aug 2026 |
| Edwards -E- O-10-21592 | Maverick Permian LLC only | Edwards, West (Canyon) | Ector | 13 | 640K | 2.48M | by Jan 1993 – Aug 2026 |
| Foster -AA- O-10-31466 | Occidental Permian Ltd. only | Cowden, South (Canyon 8900) | Ector | 1 | 493K | 882K | by Jan 1993 – Nov 2009 |
| Witcher, J. E. O-10-21463 | Occidental Permian Ltd. only | Cowden, South (Canyon 8790) | Ector | 13 | 475K | 461K | by Jan 1993 – Aug 2026 |
| Henderson, F.A. -B- O-10-30167 | Exxon Mobil Corporation only | Cowden, South (Canyon 8790) | Ector | 2 | 453K | 480K | by Jan 1993 – Jun 2002 |
| Addis, Frank V. O-10-21062 | Occidental Permian Ltd. only | Cowden, South (Canyon 8790) | Ector | 9 | 433K | 381K | by Jan 1993 – Aug 2026 |
| Fortune 500 O-10-33968 | R3 Operating Corporation only | Cowden (Canyon) | Ector | 2 | 412K | 198K | Sep 1993 – Aug 2026 |
| Foster 8-5 O-10-37906 | OXY USA WTP LP only | Cowden, South (Canyon 8790) | Ector | 2 | 389K | 314K | Aug 2006 – Aug 2026 |
| Foster, H.S. -22- O-10-22148 | Bridwell Oil Co. only | Edwards, West (Canyon) | Ector | 2 | 336K | 493K | by Jan 1993 – Aug 2026 |
| Shell-Witcher "C" O-10-29408 | Occidental Permian Ltd. only | Cowden, South (Canyon 8790) | Ector | 2 | 321K | 177K | by Jan 1993 – Aug 2026 |
| South Cowden Canyon Unit O-10-23179 | OXY USA Inc. only | Cowden, South (Canyon 8900) | Ector | 30 | 312K | 761K | by Jan 1993 – Aug 2026 |
| Cowden, Elliott F. -B- O-10-21680 | Occidental Permian Ltd. only | Cowden, South (Canyon 8790) | Ector | 24 | 297K | 138K | by Jan 1993 – Apr 2022 |
| Foster F O-10-34843 | OXY USA WTP LP only | Cowden, South (Canyon 8790) | Ector | 3 | 269K | 707K | Jan 1996 – Aug 2026 |
| TXL "K" O-10-23196 | OXY USA WTP LP only | Cowden, South (Canyon 8790) | Ector | 4 | 256K | 586K | by Jan 1993 – Aug 2026 |
| Ector -AZ- Fee O-10-21871 | Aghorn Operating, Inc. only | Edwards, West (Canyon) | Ector | 2 | 254K | 877K | by Jan 1993 – Jun 2026 |
| Henderson, E. A. O-10-28431 | Laguna Petroleum Corporation only | Cowden, South (Canyon 8790) | Ector | 2 | 234K | 332K | by Jan 1993 – Feb 2013 |
| Foster-J O-10-30774 | Conocophillips Company only | Cowden, South (Canyon 8790) | Ector | 2 | 210K | 174K | by Jan 1993 – Nov 2003 |
| Shell-Witcher O-10-29423 | Occidental Permian Ltd. only | Cowden, South (Canyon 8790) | Ector | 1 | 188K | 316K | by Jan 1993 – Aug 2026 |
| Sun-Witcher O-10-29582 | Occidental Permian Ltd. only | Cowden, South (Canyon 8790) | Ector | 1 | 185K | 156K | by Jan 1993 – Aug 2026 |
| Foster E O-10-34740 | OXY USA WTP LP only | Cowden, South (Canyon 8790) | Ector | 1 | 182K | 313K | Nov 1995 – Oct 2017 |
| Moss, Paul, -A- O-10-21101 | Occidental Permian Ltd. only | Cowden, South (Canyon 8790) | Ector | 2 | 178K | 243K | by Jan 1993 – Feb 2026 |
| Witcher, J. E. -A- O-10-21652 | Occidental Permian Ltd. only | Cowden, South (Canyon 8790) | Ector | 2 | 157K | 56.2K | by Jan 1993 – Aug 2026 |
| Johnson 31 O-10-43446 | Sahara Operating Company only | Cowden, North (Canyon) | Ector | 1 | 155K | 50K | May 2012 – Jul 2026 |
| Johnson, J.L. -31- O-10-30599 | Basin Oil & Gas Operating, LLC only | Cowden, South (Canyon 8790) | Ector | 2 | 154K | 100K | by Jan 1993 – Aug 2026 |
| Foster, H. S. O-10-22017 | Bridwell Oil Co. only | Edwards, West (Canyon) | Ector | 3 | 150K | 1.95K | by Jan 1993 – Aug 2026 |
| Meteor Crater O-10-37118 | OXY USA WTP LP only | Cowden, South (Canyon 8790) | Ector | 1 | 149K | 1.89M | Jul 2003 – Sep 2018 |
| Parker Ranchland 22 O-10-44362 | Flat Top Operating, LLC only | Monahans Draw (Canyon 8388) | Ector | 4 | 148K | 430K | Oct 2012 – Aug 2026 |
| Parker Ranchland 21 O-10-44727 | Flat Top Operating, LLC only | Monahans Draw (Canyon 8388) | Ector | 4 | 147K | 296K | Nov 2013 – Aug 2026 |
| TXL '43-13' O-10-31973 | OXY USA Inc. only | Cowden, South (Canyon 8900) | Ector | 2 | 141K | 414K | by Jan 1993 – Jul 2008 |
| Longbotham, Cora -A- O-10-22275 | Aghorn Operating, Inc. only | Cowden, South (Canyon 8790) | Ector | 2 | 129K | 200K | by Jan 1993 – Jul 2026 |
| Moss, Paul, -C- O-10-20591 | Occidental Permian Ltd. only | Cowden, South (Canyon 8790) | Ector | 2 | 125K | 143K | by Jan 1993 – Nov 2014 |
| Bagley, J.E. O-10-30657 | Aghorn Operating, Inc. only | Cowden, South (Canyon 8790) | Ector | 1 | 120K | 78.5K | by Jan 1993 – Aug 2001 |
| Cowden -A- O-10-30280 | Kinney Incorporated only | Cowden, South (Canyon 8790) | Ector | 1 | 116K | 167K | by Jan 1993 – Aug 2026 |
| Moss -G- O-10-22346 | OXY USA WTP LP only | Cowden, South (Canyon 8790) | Ector | 1 | 116K | 54.7K | by Jan 1993 – Aug 2026 |
| Foster Aaa O-10-37997 | OXY USA WTP LP only | Cowden, South (Canyon 8900) | Ector | 1 | 114K | 208K | Oct 2006 – Aug 2026 |
| Foster "F" O-10-23356 | Aghorn Operating, Inc. only | Cowden, South (Canyon 8790) | Ector | 1 | 112K | 126K | by Jan 1993 – Jun 2026 |
| South BR Odessa O-10-54907 | OXY USA Inc. only | Cowden, North (Canyon) | Ector | 1 | 111K | 71.4K | Oct 2019 – Aug 2026 |
| Cross H O-10-37240 | OXY USA WTP LP only | Cowden, South (Canyon 8790) | Ector | 1 | 107K | 700K | Jul 2003 – Aug 2026 |
| Longbotham, Cora "B" O-10-22498 | Aghorn Operating, Inc. only | Cowden, South (Canyon 8790) | Ector | 1 | 107K | 114K | by Jan 1993 – Jul 2026 |
| Foster -B- O-10-21249 | Baker Operating, Inc. only | Cowden, South (Canyon 8900) | Ector | 4 | 106K | 260K | by Jan 1993 – Aug 2026 |
| Johnson, J.L. "O" O-10-30807 | OXY USA Inc. only | Cowden, North (Canyon) | Ector | 5 | 104K | 19.9K | by Jan 1993 – Aug 2026 |
| Moss, Paul "D" O-10-23771 | Sheridan Production Company, LLC only | Cowden, South (Canyon 8790) | Ector | 3 | 103K | 29.3K | by Jan 1993 – Feb 2012 |
| Martin, T. J. O-10-20343 | Occidental Permian Ltd. only | Cowden, South (Canyon 8790) | Ector | 3 | 102K | 37K | by Jan 1993 – Mar 2012 |
| Henderson, W. B. "C" O-10-23284 | Henderson, Bryan, Co. only | Cowden, South (Canyon 8790) | Ector | 2 | 102K | 53.8K | by Jan 1993 – Apr 2008 |
| Foster /I/ O-10-22277 | Occidental Permian Ltd. only | Cowden, South (Canyon 8790) | Ector | 2 | 101K | 80.3K | by Jan 1993 – Aug 2026 |