| Pierce Estate O-3-12311 | CHP Oil & Gas Company, L.C. only | Hutchins-Kubela (Frio Lower) | Wharton | 1 | 53.5K | 7.71K | by Jan 1993 – Aug 2026 |
| Cain, H. C. -A- O-3-3382 | Silverbrook Operating, LLC only | Pierce Junction | Harris | 2 | 50.8K | 11 | by Jan 1993 – Aug 2026 |
| Pierce 14 O-11-70567 | Tacoma Operating LLC only | Cmi (Spraberry) | Dawson | 1 | 49.9K | 10.3K | Apr 2017 – Aug 2026 |
| Kelly O-1-15217 | Shidler, Mark L., Inc. only | Austin Pierce (Austin Chalk) | Gonzales | 1 | 49.5K | 16.4K | Feb 2010 – Aug 2026 |
| Pierce Estates 'J' O-3-16197 | McGowan Working Partners, Inc. only | Pierce Ranch (4850) | Wharton | 2 | 49K | 60.4K | by Jan 1993 – Apr 2003 |
| Pierce Estate G-3-200393 | Kebo Oil & Gas, Inc. only | Blessing (Frio 8430) | Matagorda | 1 | 46.6K | 315K | Feb 2004 – Jun 2013 |
| McCarthy Family Trust 97 O-3-25825 | C & E Operating, Inc. only | Seabreeze (Pierce) | Chambers | 1 | 46.6K | 183K | Sep 2011 – Aug 2018 |
| Pierce Estate A G-3-249131 | Ballard Exploration Company,inc. only | El Campo (Yegua) | Wharton | 1 | 45.8K | 490K | Apr 2008 – Dec 2010 |
| Reuben Pierce Oil Unit O-6-15724 | Diversified Production LLC only | Waskom (Travis Peak 1) | Harrison | 1 | 43.8K | 171K | Sep 2019 – Aug 2026 |
| Pierce Estate G-3-175341 | Cypress Production, Inc. only | Sugar Valley (Frio 9,000) | Matagorda | 1 | 42.2K | 3.44M | Sep 1999 – Mar 2005 |
| Taylor, E. R. O-3-24715 | Primal Energy Corporation only | Pierce Junction | Harris | 3 | 40.1K | 0 | Jun 2005 – Mar 2009 |
| Pierce O-3-19879 | Goldsmith Operating, LLC only | Halliday (Woodbine) | Leon | 1 | 39.9K | 19.9K | by Jan 1993 – Jun 2026 |
| Pierce O-5-3403 | Zogreo Energy Inc. only | Sulphur Bluff (Rodessa) | Hopkins | 1 | 39.3K | 9.2K | by Jan 1993 – Aug 2026 |
| Pierce Estate O-3-25554 | Apache Corporation only | Magnet Withers (F-16) | Wharton | 6 | 38.5K | 126K | Jul 2010 – Nov 2016 |
| Parker-Pierce-Hopper(alloc) Unit G-6-274229 | Comstock Oil & Gas, LLC only | Carthage (Haynesville Shale) | Panola | 1 | 37.6K | 5.51M | Oct 2013 – Aug 2026 |
| 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 | 36.5K | 5.03K | by Jan 1993 – Aug 2026 |
| Morton O-11-68711 | Pierce Production Company, LLC only | Robertson, N. (San Andres) | Gaines | 1 | 35.7K | 647 | Nov 2004 – Feb 2020 |
| Pierce Estate O-3-25050 | Kebo Oil & Gas, Inc. only | Blessing (F-19) | Matagorda | 1 | 35.1K | 33.6K | Jun 2007 – Dec 2010 |
| Cain, H. C. O-3-3381 | Silverbrook Operating, LLC only | Pierce Junction | Harris | 4 | 32.7K | 634 | by Jan 1993 – Aug 2026 |
| Kelly, Lelia O-1-5796 | Schmid Properties, Inc. only | Austin Pierce (Edwards Lime) | Gonzales | 1 | 31.2K | 1.33M | by Jan 1993 – Oct 2008 |
| Pierce, John R. O-1-9936 | Petroleum Recovery Systems, L.C. only | Dunlap | Caldwell | 16 | 31.1K | 32.1K | by Jan 1993 – Aug 2026 |
| Reuben Pierce Gas Unit G-6-287337 | Diversified Production LLC only | Waskom (Travis Peak 1) | Harrison | 1 | 30.4K | 155K | Aug 2019 – Aug 2026 |
| Pierce, Peggy R. Gas Unit G-6-270980 | Merit Energy Company only | Woodlawn (Cotton Valley) | Harrison | 1 | 29.7K | 2.9M | Apr 2013 – Aug 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 |
| Morton O-11-10921 | Pierce Production Company only | Robertson (San Andres) | Gaines | 1 | 28.6K | 21 | by Jan 1993 – Oct 2004 |
| Pierce Estates "E" O-3-11815 | McGowan Working Partners, Inc. only | Pierce Ranch (4850) | Wharton | 4 | 28.2K | 39.4K | by Jan 1993 – Apr 2003 |
| O.W. Fordyce O-3-19558 | Stealth Onsite Solutions LLC only | Pierce Junction | Harris | 1 | 27.6K | 161 | by Jan 1993 – Aug 2016 |
| Pierce, Victor O-9-5321 | Toc Energy Resources, LLC only | V. I. P. (Clear Fork, Lo.) | Crockett | 2 | 27.5K | 348 | Jun 1993 – Jul 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 | 27K | 1.93M | Sep 1993 – Aug 2026 |
| Littman -B- O-10-30988 | Pierce Production Company, LLC only | Littman (San Andres) | Andrews | 2 | 26.7K | 36.2K | by Jan 1993 – Dec 2025 |
| Pierce Ranch G-3-242420 | CML Exploration, LLC only | Shanghai, E. (EY 10200) | Wharton | 1 | 24.8K | 433K | Jul 2008 – Aug 2021 |
| Wright, Pierce Est. -B- O-1-3422 | Ams Energy Solutions LLP only | Spiller | Guadalupe | 4 | 24.3K | 9.89K | by Jan 1993 – May 2026 |
| Ferguson Oil Unit O-3-17062 | McGowan Working Partners, Inc. only | Pierce Ranch (4900) | Wharton | 1 | 24.3K | 28.7K | by Jan 1993 – Aug 2000 |
| Pierce, V.I. 103 A O-9-15384 | Scout Energy Management LLC only | Ozona (Clear Fork) | Crockett | 1 | 23.6K | 21K | Jan 2003 – Aug 2026 |
| Pierce O-10-19121 | K3 Productions LLC only | Ken Regan (Delaware) | Reeves | 1 | 21.4K | 144 | by Jan 1993 – Jul 2022 |
| Seabreeze Land Co. O-3-26132 | C & E Operating, Inc. only | Seabreeze (Pierce) | Chambers | 1 | 21.4K | 587K | Feb 2013 – Jan 2022 |
| Settegast, J. J. -B- O-3-3359 | Maverick Oil Company LLC only | Pierce Junction | Harris | 3 | 21.3K | 16 | Oct 1993 – Jul 2026 |
| Pierce Estate O-3-26169 | Kebo Oil & Gas, Inc. only | Blessing (Frio 8430) | Matagorda | 1 | 20.8K | 8.3K | Jul 2013 – May 2025 |
| Pierce Estates O-3-12690 | Apache Corporation only | Withers, North (-a- Sand) | Wharton | 5 | 20.6K | 30.8K | by Jan 1993 – Oct 1997 |
| Pierce, Peggy R. Gas Unit G-6-189514 | Merit Energy Company only | Woodlawn (Pettit) | Harrison | 1 | 20.6K | 937K | May 2002 – Aug 2026 |
| Pierce-Arrow G-9-144807 | R2Q Operating LLC only | Ozona (Canyon Sand) | Crockett | 1 | 20.1K | 1.13M | Mar 1993 – Aug 2026 |
| Brown, E. W., Jr. O-3-4748 | DJH Investments, Inc. only | Pierce Junction | Harris | 1 | 19.9K | 10 | by Jan 1993 – Apr 2001 |
| Pierce-Mollnar G-3-181911 | Cox & Perkins Exploration, Inc. only | Phase Four (9800 Yegua) | Wharton | 1 | 19.9K | 1.02M | Dec 2000 – Jul 2006 |
| Frost, Julia O-3-11660 | Rocinante only | Pierce Junction | Harris | 2 | 19.6K | 146 | by Jan 1993 – Aug 2017 |
| Taylor, E.R. O-3-23428 | Apache Corporation only | Pierce Junction | Harris | 1 | 19.5K | 0 | Mar 1998 – Jun 2000 |
| Settegast, M. O-3-11337 | Maverick Oil Company LLC only | Pierce Junction | Harris | 3 | 19.3K | 55 | by Jan 1993 – Jul 2026 |
| Pierce O-3-23896 | Samedan Oil Corporation only | Potthast (Upper McDonald) | Matagorda | 1 | 19.1K | 338K | Aug 2000 – Jun 2001 |
| Pierce, V. I. "D" G-9-143264 | R2Q Operating LLC only | Ozona (Canyon Sand) | Crockett | 1 | 18.8K | 719K | by Jan 1993 – Aug 2026 |