| Jones Unit A-981 O-3-22967 | Bonfire Operating LLC only | Brookeland (Wilcox 7740) | Newton | 1 | 524K | 428K | Feb 1996 – Jan 2016 |
| Granbury, C.B. O-3-19628 | HD Operating Co, LLC only | Livingston (Wilcox 7060) | Polk | 5 | 488K | 682K | Jan 1993 – Nov 2022 |
| South Slick O-2-10858 | B D Production Co., Inc. only | Slick (Wilcox 7535) | Goliad | 2 | 229K | 205K | Jul 2014 – Apr 2026 |
| Provident Minerals G.U. G-2-198439 | Hilcorp Energy Company only | Provident City (Wilcox 7) | Lavaca | 1 | 210K | 17.5M | Jun 2003 – Jul 2025 |
| Royal et Al O-3-26501 | Magnum Producing, LP only | Giddings (Wilcox 7300) | Fayette | 1 | 137K | 204K | Oct 2013 – Sep 2019 |
| Reid-O'Brien O-3-24993 | Neches Transport Inc. only | West Skillern (Wilcox 7760) | Tyler | 1 | 122K | 158K | Jun 2007 – Apr 2026 |
| Atlantic-Sinclair Fee 'B' O-3-8784 | Lucky Lad Energy, LLC only | Ramers Island (Wilcox 7890) | Tyler | 1 | 97.5K | 144K | Jan 1993 – Feb 2026 |
| Black Stone Minerals O-3-27236 | Magnum Producing, LP only | Elijah Green (Wilcox 7) | Tyler | 1 | 95K | 141K | Feb 2017 – Aug 2024 |
| Foster "A" O-3-25834 | Oretta Holdings LLC only | Cold Springs, E. (Wilcox 7875) | San Jacinto | 1 | 92.9K | 70.4K | May 2011 – Apr 2022 |
| Foster Lumber Co. A O-3-25819 | Oretta Holdings LLC only | Cold Springs (Wilcox 7,800) | San Jacinto | 2 | 65K | 434K | Nov 2011 – Dec 2025 |
| Gouger Gas Unit No. 5 O/A G-1-439 | Pearl, Bill H. Productions, Inc. only | Roos (Wilcox 7500) | McMullen | 1 | 49.6K | 814K | Jan 1993 – Apr 2026 |
| Langham, W. W. "B" G-3-143069 | Famcor Oil, Inc. only | Urbana (Wilcox 7250) | San Jacinto | 1 | 46.9K | 1.75M | Jan 1993 – Feb 2001 |
| Heinrich, Louis M. O-2-6320 | Nog Production & Operating LLC only | Gowitt (Wilcox 7700) | Goliad | 1 | 45.8K | 630 | Jan 1993 – Mar 2026 |
| Royal et Al G-3-258191 | Magnum Producing, LP only | Giddings (Wilcox 7300) | Fayette | 1 | 45.6K | 686K | May 2010 – Sep 2013 |
| Gutierrez Heirs 37 G-4-164759 | Varas Energy Operating Company, only | Urebeno, South (Wilcox 7000) | Zapata | 1 | 43.8K | 9.21M | Sep 1997 – Nov 2025 |
| Killam Mineral Fee "601" G-4-148849 | Killam Oil Co., Ltd. only | Villegas (Middle Wilcox 7950) | Webb | 1 | 37.7K | 1.88M | Mar 1994 – Jul 2008 |
| Catto Heirs Unit #2 G-4-143155 | Killam Oil Co., Ltd. only | Villegas (Middle Wilcox 7950) | Webb | 1 | 36.5K | 2.46M | Jan 1993 – Dec 2022 |
| Foster -A- O-3-25820 | Oretta Holdings LLC only | Cold Springs, W. (Wilcox 7800 B) | San Jacinto | 2 | 29.6K | 175K | Nov 2011 – Aug 2025 |
| Dies Estate O-3-24842 | Miller Energy, Inc. only | West Skillern (Wilcox 7760) | Tyler | 1 | 29.3K | 27.2K | Mar 2006 – Nov 2014 |
| Gutierrez Heirs G-4-113810 | Varas Energy Operating Company, only | Urebeno, South (Wilcox 7000) | Zapata | 1 | 29.1K | 6.63M | Jan 1993 – Apr 2026 |
| K & H Fee "2042" G-4-107363 | Killam Oil Co., Ltd. only | Villegas (Middle Wilcox 7950) | Webb | 1 | 27.1K | 893K | Jan 1993 – Mar 2000 |
| Spielhagen, B. U. G-2-186468 | Paleo Oil Company LLC only | Burnell (Wilcox 7800) | Karnes | 1 | 26.2K | 1.25M | Oct 2001 – Aug 2010 |
| Foster Oil Unit O-3-22036 | Famcor Oil, Inc. only | Cold Springs (Wilcox 7,800) | San Jacinto | 1 | 22.8K | 21.3K | Apr 1993 – Feb 1997 |
| Foster 'D' O-3-25831 | Oretta Holdings LLC only | Cold Springs (Wilcox 7,800) | San Jacinto | 1 | 22.1K | 191K | Oct 2011 – Oct 2018 |
| Killam Mineral Fee "601" G-4-152575 | Killam Oil Co., Ltd. only | Villegas (Middle Wilcox 7950) | Webb | 1 | 21.4K | 3.43M | Dec 1994 – Apr 2026 |
| Chapman G-3-193826 | Strand Energy, L.C. only | Howth (Wilcox 7580) | Waller | 1 | 20.3K | 542K | Mar 2003 – Mar 2009 |
| K&H Fee "574" G-4-160856 | Killam Oil Co., Ltd. only | Villegas (Middle Wilcox 7950) | Webb | 1 | 20.2K | 2.53M | Nov 1996 – Jan 2016 |
| USA O-3-24522 | Famcor Oil, Inc. only | Cold Springs, W. (Wilcox 7800 B) | San Jacinto | 1 | 20.1K | 70.5K | Mar 2004 – May 2010 |
| McKinney, J. E. O-2-8247 | Magnum Producing, LP only | Pettus, SE. (Wilcox 7650) | Bee | 1 | 19.9K | 50.9K | Jan 1997 – Oct 2014 |
| Blk. 32 G-3-170434 | Lone Oak Energy Inc only | Sublime (Wilcox 7770) | Colorado | 1 | 19.3K | 1.04M | Oct 1998 – May 2008 |
| Block 75 Unit G-2-182271 | Sage Energy Company only | Clayton (Wilcox 7720) | Live Oak | 1 | 19K | 1.21M | Jan 2001 – Jul 2008 |
| Johnson, B. A. "A" O-3-23130 | Magnum Producing, LP only | Sublime (Wilcox 7800) | Colorado | 1 | 18.9K | 41.4K | Nov 1996 – Jan 2001 |
| Wtu Robinson G-2-209990 | Britanco, L.L.C. only | Tuleta, West (Slick-Wilcox 7900) | Bee | 1 | 18.5K | 966K | Apr 2005 – Apr 2026 |
| Scott Foundation G-1-202556 | Proline Energy Resources Inc only | Campana, South (Wilcox 7700) | McMullen | 1 | 18.1K | 1.73M | Jun 2004 – Dec 2016 |
| Scott Foundation G-1-193524 | Proline Energy Resources Inc only | Campana, South (Wilcox 7,900) | McMullen | 1 | 18K | 1.5M | Jan 2003 – Oct 2008 |
| Rice Institute G-3-188011 | Petra Oleum Corp. only | Hillister, East (Wilcox 7300) | Tyler | 1 | 17.9K | 105K | Jan 2002 – May 2006 |
| Bernice Karl et al GU G-2-171009 | Peoples Energy Prod.-TX, L.P. only | Hope (Wilcox 7700) | Lavaca | 1 | 16.8K | 777K | May 1998 – Apr 2004 |
| Old Zapata Deep Gas Unit G-4-140947 | Varas Energy Operating Company, only | Urebeno, South (Wilcox 7000) | Zapata | 1 | 16.6K | 3.98M | Jan 1993 – Apr 2026 |
| Frost National Bank G-4-138439 | Hilcorp Energy Company only | Villegas (Middle Wilcox 7950) | Webb | 1 | 16.3K | 2.69M | Jan 1993 – Apr 2026 |
| Frost National Bank G-4-123572 | Hilcorp Energy Company only | Villegas (Middle Wilcox 7950) | Webb | 1 | 16.1K | 3.01M | Jan 1993 – Apr 2026 |
| Hartman O-2-8400 | Conocophillips Company only | Thomaston (Wilcox 7930) | De Witt | 1 | 15.5K | 294K | Sep 1998 – May 2005 |
| B. U.-Spielhagan G-2-75460 | Legend Natural Gas II, LP only | Burnell (Wilcox 7300) | Karnes | 1 | 15.1K | 1.01M | Jan 1993 – Aug 1997 |
| West Skillern O-3-24814 | Texana Operating Company only | West Skillern (Wilcox 7760) | Tyler | 1 | 14.6K | 12.1K | Dec 2005 – Mar 2026 |
| Frost National Bank G-4-125282 | Conocophillips Company only | Villegas (Middle Wilcox 7950) | Webb | 1 | 14.2K | 1.1M | Jan 1993 – Sep 2002 |
| K & H Fee "1620" G-4-145435 | Killam Oil Co., Ltd. only | Villegas (Middle Wilcox 7950) | Webb | 1 | 13.5K | 1.86M | Apr 1993 – Dec 2019 |
| Frost National Bank G-4-139395 | Hilcorp Energy Company only | Villegas (Middle Wilcox 7950) | Webb | 1 | 13.4K | 1.94M | Jan 1993 – Apr 2026 |
| Ryan, Nolan G-2-216801 | Aurora Resources Corporation only | Clayton (Wilcox 7250) | Live Oak | 1 | 13.3K | 555K | Oct 2005 – Apr 2010 |
| Hurst, Carlyn O-2-7864 | Keahey Exploration, Inc. only | Slick (Wilcox 7535) | Goliad | 1 | 13.1K | 37K | Mar 1993 – Apr 2001 |
| Hartfiel - Dabelgott O-1-13836 | Padon, Frank B. Oil Oper., Inc. only | Cousins (Wilcox 7500) | McMullen | 1 | 12.6K | 53.6K | Feb 1994 – Dec 1995 |
| Old Zapata Deep GU G-4-172281 | Varas Energy Operating Company, only | Urebeno, South (Wilcox 7000) | Zapata | 1 | 12.6K | 1.47M | Feb 1999 – Apr 2026 |