| Pierce Estates O-3-6715 | Remora Management, LLC only | Magnet Withers | Wharton | 146 | 4.66M | 4.21M | Jan 1993 – Apr 2026 |
| Pierce Estates O-3-6720 | Remora Management, LLC only | Withers, North (-C- Sand) | Wharton | 22 | 1.21M | 851K | Jan 1993 – Apr 2026 |
| Pierce Estates B O-3-24339 | Remora Management, LLC only | Magnet Withers (F-13-A) | Wharton | 8 | 983K | 602K | Apr 2003 – Apr 2026 |
| Pierce Estates, Inc. O-3-4526 | McGowan Working Partners, Inc. only | Withers, North | Wharton | 39 | 980K | 289K | Jan 1993 – Apr 2026 |
| Pierce Estates -A- O-3-3349 | Remora Management, LLC only | Pickett Ridge | Wharton | 22 | 843K | 153K | Jan 1993 – Apr 2026 |
| Pierce Estates O-3-6719 | Remora Management, LLC only | Withers, North | Wharton | 23 | 782K | 1.1M | Jan 1993 – Apr 2026 |
| Pierce Estates, Inc. O-3-12650 | McGowan Working Partners, Inc. only | Withers, North (-a- Sand) | Wharton | 20 | 515K | 151K | Jan 1993 – Apr 2026 |
| Pierce Estates C O-3-24211 | Remora Management, LLC only | Magnet Withers (F-17) | Wharton | 9 | 476K | 535K | Jun 2002 – Jan 2026 |
| Pierce Estates C O-3-24959 | Remora Management, LLC only | Magnet Withers (F-19) | Wharton | 5 | 331K | 361K | Jan 2007 – Apr 2026 |
| Pierce Estate "B" G-3-249561 | Ballard Exploration Company,inc. only | Pierce Ridge (Yegua 12150) | Wharton | 1 | 316K | 5.8M | Dec 2008 – Jun 2018 |
| Pierce Estate A G-3-263198 | Ballard Exploration Company,inc. only | Pierce (Yegua DY-1) | Wharton | 1 | 193K | 3.28M | Jan 2011 – Jul 2018 |
| Pierce Estate O-3-15059 | McGowan Working Partners, Inc. only | Pierce Ranch (4900) | Wharton | 6 | 184K | 203K | Jan 1993 – Apr 2003 |
| Naiser, J.E. Estate G-3-131991 | Faulconer Energy, LLC only | Mott Slough (Yegua) | Wharton | 1 | 182K | 10.3M | Jan 1993 – Apr 2026 |
| Pierce Estates -E- O-3-11218 | McGowan Working Partners, Inc. only | Pierce Ranch (4900) | Wharton | 6 | 155K | 187K | Jan 1993 – Jan 2001 |
| Pierce Estates C O-3-7163 | Apache Corporation only | Magnet Withers (F-22) | Wharton | 6 | 142K | 113K | Jan 1993 – Jan 2017 |
| Weaver Estate O-3-7733 | Marwell Petroleum Ltd Partnrship only | Louise | Wharton | 1 | 92.9K | 284 | Jan 1993 – Apr 2026 |
| Pierce Estate "J" O-3-16480 | McGowan Working Partners, Inc. only | Pierce Ranch (4900) | Wharton | 3 | 81K | 92.7K | Jan 1993 – Apr 2003 |
| Pierce Estate O-3-16436 | Viper S.W.D., LLC only | B U Ranch (Seg C Marg.) | Wharton | 1 | 80.2K | 271 | Jan 1993 – Apr 2026 |
| Pierce Estate C O-3-25205 | Apache Corporation only | Magnet Withers (F-22 A) | Wharton | 1 | 79.7K | 76K | Aug 2008 – Aug 2017 |
| Pierce Estates O-3-7164 | Apache Corporation only | Magnet Withers (F-21) | Wharton | 5 | 73.9K | 164K | Jun 2011 – Jan 2017 |
| Pierce Estate C O-3-25285 | Remora Management, LLC only | Magnet Withers (Frio Cons.) | Wharton | 5 | 69.9K | 94.8K | Oct 2008 – Aug 2021 |
| Pierce Estates C O-3-24998 | Apache Corporation only | Magnet Withers (F-24) | Wharton | 2 | 68.8K | 59K | Mar 2007 – Aug 2011 |
| Naiser, J. E. Estate G-3-133342 | Faulconer Energy, LLC only | Mott Slough (Yegua) | Wharton | 1 | 67.3K | 5.46M | Jan 1993 – Apr 2026 |
| Pierce Estate O-3-25637 | Remora Management, LLC only | Magnet Withers (F-22) | Wharton | 3 | 64.3K | 128K | Aug 2010 – Apr 2026 |
| Pierce Estate O-3-12311 | CHP Oil & Gas Company, L.C. only | Hutchins-Kubela (Frio Lower) | Wharton | 1 | 53.2K | 7.71K | Jan 1993 – Apr 2026 |
| Hutchins,louise K.,the Estate Of G-3-189162 | Headington Oil Company, L.P. only | Cottonmouth (Wilcox) | Wharton | 1 | 49.6K | 1.91M | Jul 2001 – Dec 2004 |
| Pierce Estates 'J' O-3-16197 | McGowan Working Partners, Inc. only | Pierce Ranch (4850) | Wharton | 2 | 49K | 60.4K | Jan 1993 – Apr 2003 |
| Pierce Estate A G-3-249131 | Ballard Exploration Company,inc. only | El Campo (Yegua) | Wharton | 1 | 45.8K | 490K | Apr 2008 – Dec 2010 |
| Pierce Estate O-3-25554 | Apache Corporation only | Magnet Withers (F-16) | Wharton | 6 | 38.5K | 126K | Jul 2010 – Nov 2016 |
| Cockburn State Yegua Unit G-3-245421 | Milagro Exploration, LLC only | Magnet Withers (Martinez SD) | Wharton | 1 | 38.5K | 8.99M | Nov 2008 – Oct 2010 |
| Pierce Estate O-3-25798 | Remora Management, LLC only | Magnet Withers (F-18, East) | Wharton | 2 | 37.5K | 76.8K | Apr 2011 – Jun 2018 |
| Pierce Estate O-3-11947 | CHP Oil & Gas Company, L.C. only | Hutchins, South (5800) | Wharton | 1 | 36.4K | 5.03K | Jan 1993 – Apr 2026 |
| Earl Estate G-3-255636 | Fletcher Operating, LLC only | Doce Piedras (Yegua 7700) | Wharton | 1 | 34.4K | 2.09M | Mar 2010 – May 2020 |
| Vineyard Estate O-3-20300 | Sue-Ann Operating, L.C. only | Wharton, S. (Frio 6300) | Wharton | 1 | 31.9K | 3.18K | Jan 1993 – Nov 2004 |
| Pierce Estates "E" O-3-11815 | McGowan Working Partners, Inc. only | Pierce Ranch (4850) | Wharton | 4 | 28.2K | 39.4K | Jan 1993 – Apr 2003 |
| Koch, E. H. Estate O-3-2822 | Acoma Oil Corporation only | Louise, N. (Duson Sand) | Wharton | 1 | 23.4K | 21 | Jan 1993 – Oct 2008 |
| Pierce Estates O-3-12690 | Apache Corporation only | Withers, North (-a- Sand) | Wharton | 5 | 20.6K | 30.8K | Jan 1993 – Oct 1997 |
| Pierce Estate O-3-26459 | Apache Corporation only | Magnet Withers (F-15) | Wharton | 3 | 18.7K | 55.5K | Jul 2013 – Jan 2016 |
| Floyd Estate O-3-512 | Davis, J. R. Oil Company only | Boling | Wharton | 10 | 17.1K | 4 | Mar 1993 – Dec 2022 |
| Earl Estate Unit G-3-167685 | Hollimon Oil Corporation only | Doce Piedras (Yegua 7700) | Wharton | 1 | 16.9K | 1.14M | Mar 1998 – Mar 2009 |
| Pierce Estates G-3-132378 | Apache Corporation only | El Campo, NE (Yegua) | Wharton | 1 | 16.6K | 337K | Jan 1993 – May 2002 |
| Pierce Estates O-3-7343 | Apache Corporation only | Magnet Withers (F-15-A) | Wharton | 3 | 16K | 90.5K | Sep 2010 – May 2013 |
| Pierce Estate O-3-27307 | CHP Oil & Gas Company, L.C. only | Hutchins, SW. (5880) | Wharton | 1 | 15.8K | 5.79K | May 2017 – Apr 2026 |
| Pierce Estate O-3-25171 | Apache Corporation only | Magnet Withers (F- 8) | Wharton | 1 | 14.5K | 64.7K | Feb 2008 – Jul 2011 |
| Route 60 Real Estate Co., L C O-3-25113 | Hazoco, L.L.C. only | Arrington (Marg.) | Wharton | 1 | 14.5K | 0 | Feb 2008 – Dec 2018 |
| Pierce Estate G-3-129900 | Cox & Perkins Exploration, Inc. only | El Campo, NE (Yegua) | Wharton | 1 | 13.7K | 250K | Jan 1993 – Oct 1996 |
| Pierce Estates G-3-194407 | Apache Corporation only | Magnet Withers (F- 2-B) | Wharton | 1 | 13.2K | 45.5K | Apr 2003 – Jan 2004 |
| State Tracts O-3-2897 | Apache Corporation only | Magnet Withers | Wharton | 5 | 11.1K | 64.1K | Jan 1993 – Apr 1995 |
| Pierce Estates O-3-25600 | Apache Corporation only | Magnet Withers (F-15-B) | Wharton | 1 | 9.97K | 8.71K | Sep 2010 – Jan 2012 |
| Naiser, J. E. Estate G-3-133377 | Faulconer Energy, LLC only | Mott Slough (Yegua) | Wharton | 1 | 9.41K | 2.76M | Jan 1993 – Apr 2026 |