| Rio Pierce Family 57-T2-45 G-10-278124 | BPX Operating Company only | Phantom (Wolfcamp) | Reeves | 1 | 366K | 2.23M | Feb 2015 – 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 G-1-260653 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 210K | 932K | Dec 2010 – Apr 2026 |
| 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 G-1-265876 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 187K | 786K | Nov 2012 – Apr 2026 |
| Pierce G-1-274636 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 121K | 624K | Oct 2014 – Apr 2026 |
| Pierce G-3-179481 | Kaiser-Francis Oil Company only | Jones Creek, North (Wilcox) | Wharton | 1 | 118K | 2.9M | Sep 2000 – May 2010 |
| Pierce G-1-265873 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 109K | 922K | Nov 2012 – Apr 2026 |
| Pierce G-1-274947 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 103K | 362K | Oct 2014 – Apr 2026 |
| Pierce G-1-271315 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 101K | 736K | Dec 2013 – Apr 2026 |
| Rod G-3-250812 | Ballard Exploration Company,inc. only | Pierce Ridge (Yegua 12150) | Wharton | 1 | 86K | 700K | Apr 2009 – Oct 2010 |
| Pierce G-1-271314 | Verdun Oil EF II LLC only | Eagleville (Eagle Ford-1) | La Salle | 1 | 57.9K | 455K | Dec 2013 – Apr 2026 |
| Parker-Pierce-Hopper(alloc) Unit G-6-274234 | Comstock Oil & Gas, LLC only | Carthage (Haynesville Shale) | Panola | 1 | 57K | 5.93M | Mar 2014 – Apr 2026 |
| Pierce Estate G-3-200393 | Kebo Oil & Gas, Inc. only | Blessing (Frio 8430) | Matagorda | 1 | 46.6K | 315K | Feb 2004 – Jun 2013 |
| 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 G-3-175341 | Cypress Production, Inc. only | Sugar Valley (Frio 9,000) | Matagorda | 1 | 42.2K | 3.44M | Sep 1999 – Mar 2005 |
| Parker-Pierce-Hopper(alloc) Unit G-6-274229 | Comstock Oil & Gas, LLC only | Carthage (Haynesville Shale) | Panola | 1 | 37.4K | 5.46M | Oct 2013 – Apr 2026 |
| Pierce, Peggy R. Gas Unit G-6-270980 | Merit Energy Company only | Woodlawn (Cotton Valley) | Harrison | 1 | 29.4K | 2.88M | Apr 2013 – Apr 2026 |
| Pierce Estate G-3-177936 | Cypress Production, Inc. only | Sugar Valley (Frio 9,000) | Matagorda | 1 | 29.1K | 2.45M | Jul 2000 – Sep 2004 |
| Reuben Pierce Gas Unit G-6-287337 | Diversified Production LLC only | Waskom (Travis Peak 1) | Harrison | 1 | 29K | 151K | Aug 2019 – Apr 2026 |
| Blessing Pierce ("S" Unit) G-3-145821 | Sue-Ann Operating, L.C. only | Blessing (F-13) | Matagorda | 1 | 27.2K | 660K | Jun 1993 – Nov 2007 |
| Pierce Est. Oil & Gas Ints. G-3-48189 | IV Standard, LLC only | Duncan Slough, S. (Frio, Lo.) | Matagorda | 1 | 26.8K | 1.92M | Sep 1993 – Apr 2026 |
| Pierce Ranch G-3-242420 | CML Exploration, LLC only | Shanghai, E. (EY 10200) | Wharton | 1 | 24.8K | 433K | Jul 2008 – Aug 2021 |
| Pierce, Peggy R. Gas Unit G-6-189514 | Merit Energy Company only | Woodlawn (Pettit) | Harrison | 1 | 20.4K | 930K | May 2002 – Apr 2026 |
| Pierce-Arrow G-9-144807 | Extex Operating Company only | Ozona (Canyon Sand) | Crockett | 1 | 20.1K | 1.13M | Mar 1993 – Apr 2026 |
| Pierce-Mollnar G-3-181911 | Cox & Perkins Exploration, Inc. only | Phase Four (9800 Yegua) | Wharton | 1 | 19.9K | 1.02M | Dec 2000 – Jul 2006 |
| Pierce G-3-223952 | Kebo Oil & Gas, Inc. only | Blessing (Frio 8430) | Matagorda | 1 | 18.8K | 159K | Mar 2006 – Apr 2014 |
| Pierce, V. I. "D" G-9-143264 | Extex Operating Company only | Ozona (Canyon Sand) | Crockett | 1 | 18.8K | 719K | Jan 1993 – Apr 2026 |
| Pierce Ranch G-3-193466 | CML Exploration, LLC only | Phase Four (9560 Yegua) | Wharton | 1 | 18.2K | 714K | Feb 2003 – May 2007 |
| Reuben Pierce Gas Unit G-6-287110 | Diversified Production LLC only | Waskom (Travis Peak 1) | Harrison | 1 | 17.6K | 110K | Jun 2019 – Apr 2026 |
| Pierce, V. I. G-9-144809 | Extex Operating Company only | Ozona (Canyon Sand) | Crockett | 1 | 17.5K | 2.01M | Mar 1993 – Apr 2026 |
| Pierce, V. I. (NCT-F2) G-9-143774 | Extex Operating Company only | Ozona (Canyon Sand) | Crockett | 1 | 17.1K | 1M | Jan 1993 – Apr 2026 |
| Pierce Estates G-3-132378 | Apache Corporation only | El Campo, NE (Yegua) | Wharton | 1 | 16.6K | 337K | Jan 1993 – May 2002 |
| Pierce City G-3-133126 | Shanghai Energy Corporation only | Shanghai, E. (EY 10200) | Wharton | 1 | 13.7K | 244K | Jan 1993 – Dec 1996 |
| Pierce Estate G-3-129900 | Cox & Perkins Exploration, Inc. only | El Campo, NE (Yegua) | Wharton | 1 | 13.7K | 250K | Jan 1993 – Oct 1996 |
| Pierce DF Unit, V. I. G-9-144133 | Extex Operating Company only | Ozona (Canyon Sand) | Crockett | 1 | 13.6K | 804K | Jan 1993 – Apr 2026 |
| Pierce Estates G-3-194407 | Apache Corporation only | Magnet Withers (F- 2-B) | Wharton | 1 | 13.2K | 45.5K | Apr 2003 – Jan 2004 |
| Pierce Unit No. 4 G-6-171966 | Eqv Operating LLC only | Carthage (Pettit, Lower Gas) | Panola | 1 | 12.8K | 897K | Dec 1998 – Apr 2026 |
| Pierce, Peggy R. Gas Unit G-6-259606 | Merit Energy Company only | Woodlawn (Cotton Valley) | Harrison | 1 | 12.3K | 4.52M | Aug 2010 – Apr 2026 |
| Pierce State "a", V.I. G-9-143777 | Extex Operating Company only | Ozona (Canyon Sand) | Crockett | 1 | 10.6K | 707K | Jan 1993 – Apr 2026 |
| Pierce, V.I. G-9-144810 | Extex Operating Company only | Ozona (Canyon Sand) | Crockett | 1 | 10.3K | 1.06M | Mar 1993 – Apr 2026 |
| Pierce Estates G-3-51155 | Bushmaster Production Comp, LLC only | Duncan Slough, SE. (Frio Lo.) | Matagorda | 1 | 10K | 696K | Jan 1993 – Mar 2026 |
| Pierce, V. I. State 'A' G-9-143262 | Extex Operating Company only | Ozona (Canyon Sand) | Crockett | 1 | 9.78K | 971K | Jan 1993 – Apr 2026 |
| Pierce "E", V. I. G-9-146438 | Extex Operating Company only | Ozona (Canyon Sand) | Crockett | 1 | 9.71K | 492K | Aug 1993 – Apr 2026 |
| Heffelfinger, Pierce Unit No. 2 G-3-91811 | Kebo Oil & Gas, Inc. only | Tidehaven (10500) | Matagorda | 1 | 9.71K | 2.5M | Jan 1993 – Dec 2004 |
| Pierce Estate G-3-155118 | Cox & Perkins Exploration, Inc. only | El Campo (D-3 Yegua) | Wharton | 1 | 9.35K | 110K | Jun 1995 – Feb 1997 |
| Pierce, V. I. "D" G-9-143265 | Extex Operating Company only | Ozona (Canyon Sand) | Crockett | 1 | 9.26K | 1.22M | Jan 1993 – Apr 2026 |
| Pierce-Arrow G-9-145955 | Extex Operating Company only | Ozona (Canyon Sand) | Crockett | 1 | 8.96K | 1.11M | Jul 1993 – Apr 2026 |
| Pierce Estate G-3-127888 | Cox & Perkins Exploration, Inc. only | El Campo, NE (Yegua) | Wharton | 1 | 8.9K | 114K | Jan 1993 – Mar 1994 |
| Pierce Estate G-3-224241 | Cypress Production, Inc. only | Sugar Valley (Frio 9,000) | Matagorda | 1 | 8.81K | 1.31M | Dec 2006 – Oct 2012 |