| Malone G-2-251074 | Blue Wing Energy, Inc. | Normanna (Pettus) | 1 | 100 | 22.8K | Jun 2009 – Oct 2009 |
| York O-2-8832 | Hughes, Dan A. Company | Holzmark (Pettus 4150) | 1 | 100 | 1.9K | Jun 2003 – Aug 2003 |
| Stockton Gas Unit 1 G-2-250361 | Repsol Oil & Gas USA, LLC | Pawnee (Edwards) | 1 | 99 | 773K | Mar 2009 – Aug 2026 |
| Henry Bues Gas Unit G-2-222985 | Blackbrush O & G, LLC | Pawnee (Edwards) | 1 | 97 | 1.84M | Oct 2006 – Aug 2026 |
| O' Brien G-2-256909 | Paleo Oil Company LLC | Heard Ranch (Frio Z) | 1 | 96 | 879K | May 2010 – Jul 2026 |
| Sugarek G-2-166825 | Strand Energy, L.C. | Yougeen, South (4200) | 1 | 95 | 22.9K | Dec 1997 – May 1998 |
| Thomas, F. V. O-2-7905 | Bridwell Oil Co. | Blanconia | 1 | 94 | 19K | Sep 1993 – Feb 1994 |
| Davis, Nona Berry G-2-259272 | Welderxp Ltd. | Yougeen (Stillwell 4100) | 1 | 94 | 49.6K | Oct 2010 – Aug 2011 |
| Long G-2-261008 | Enco Exploration Company | Fred Long (Hockley 3850) | 1 | 90 | 22.4K | Mar 2011 – Nov 2017 |
| Ray, George A. G-2-131576 | Sydson Energy, Inc. | Ray | 1 | 89 | 217K | by Jan 1993 – Apr 2015 |
| Zuniga Gas Unit G-2-221593 | Repsol Oil & Gas USA, LLC | Pawnee (Edwards) | 1 | 84 | 1.41M | Aug 2005 – Jul 2026 |
| Byles, J. C. "A" O-2-3382 | Stallion Oil Company | Caesar, South (Luling) | 1 | 84 | 1 | Jul 1993 – Jul 1993 |
| O'Brien, J. M. G-2-161555 | C & E Operating, Inc. | Obrien Ranch (3820) | 1 | 83 | 257K | Jan 1997 – Feb 1998 |
| O'Brien, J. M. III G-2-175012 | Welder Exploration & Prod., Inc. | Murphy Sisters (Frio 3600) | 1 | 80 | 304K | Aug 1999 – Jan 2001 |
| Evans G-2-269854 | Welderxp Ltd. | Yougeen (Frio 3610) | 1 | 79 | 234K | Apr 2013 – Oct 2024 |
| Wtu Stauss G-2-225477 | West Tuleta Operating Corp. | Tuleta, West (Wilcox Mid 9100) | 1 | 79 | 12.5K | Feb 2007 – Jul 2007 |
| Hughes G-2-269311 | Headwaters Energy Partners, LLC | Beeville, West (3540) | 1 | 76 | 252K | Jan 2013 – May 2022 |
| Heard, C. E. "B" G-2-231910 | Milagro Exploration, LLC | Heard Ranch (4400) | 1 | 75 | 118K | Aug 2007 – May 2013 |
| O'Brien - Morris Unit G-2-254723 | T-C Oil Company, LLC | Medio Creek (4100) | 1 | 74 | 60.7K | Nov 2009 – Feb 2011 |
| Eberstadt G-2-213994 | Anderson Oil Ltd. | Caesar, South (5650) | 1 | 73 | 30.4K | Jun 2005 – Jun 2007 |
| Shelton G-2-227353 | Tidal Petroleum, Inc. | Mineral, South (Slick) | 1 | 73 | 5.95K | Mar 2007 – Jul 2007 |
| Holzmark G-2-222572 | Kaler Energy Corp. | Holzmark, E. (Slick) | 1 | 73 | 2.73K | Sep 2006 – Feb 2007 |
| Suffel G-2-184326 | Tidal Petroleum, Inc. | Tuleta (Yegua 4060) | 1 | 73 | 13.8K | Jun 2001 – Apr 2002 |
| Robinson G-2-116155 | Britanco, L.L.C. | Tuleta, West (Vicksburg G) | 1 | 72 | 46.9K | Feb 1999 – Dec 2024 |
| Tuleta Gas Unit G-2-215170 | Tidal Petroleum, Inc. | Tuleta, East (Luling) | 1 | 72 | 16.6K | Sep 2005 – Mar 2006 |
| Holzmark -S- O-2-5118 | Chandler Oil & Gas, LLC | Holzmark (Hockley) | 1 | 69 | 0 | Nov 2018 – Jan 2021 |
| Quail Ridge G-2-280341 | Enco Exploration Company | Norbee (3400) | 1 | 67 | 146K | Apr 2016 – Sep 2017 |
| Algea Gas Unit G-2-147000 | Genesis Producing Company | Orangedale (Luling, Lower) | 1 | 67 | 18.4K | Sep 1993 – Jan 1994 |
| Malone -A- G-2-245435 | T-C Oil Company, LLC | Medio Creek (3000) | 1 | 66 | 347K | Jan 2009 – Jul 2011 |
| Carl G-2-67143 | Proline Energy Resources Inc | Yougeen, South (3550) | 1 | 66 | 576K | by Jan 1993 – Jun 2026 |
| Sparkman, C.P. O-2-7606 | Starco Exploration, Inc. | Mineral, North (7150 Slick) | 1 | 66 | 5 | by Jan 1993 – Feb 1994 |
| Rowling -D- G-2-255831 | T-C Oil Company, LLC | Murphy Sisters (Frio 3600) | 1 | 65 | 766K | Jun 2010 – Nov 2013 |
| Riggle G-2-270488 | Paleo Oil Company LLC | Yougeen (Hockley 4500) | 1 | 64 | 28.8K | Aug 2013 – Sep 2019 |
| Heard, C. E. "B" G-2-155046 | Proton Energy, L.L.C. | Heard Ranch (4000) | 1 | 62 | 655K | Sep 1994 – Nov 1999 |
| Heard, C. E. "B" G-2-150714 | Smith Production Inc. | Heard Ranch (Frio V) | 1 | 61 | 703K | Jun 1994 – Sep 1997 |
| Stauss-Nelson G-2-184290 | Trailblazer Oil & Gas LLC | Tuleta, West (Vicksburg F) | 1 | 59 | 184K | Feb 2001 – Oct 2009 |
| Macdon Royalty Corporation O-2-2429 | Chandler Oil & Gas, LLC | Holzmark, East (Pettus Sd.) | 1 | 59 | 0 | Jan 2019 – Dec 2020 |
| Welder G-2-173224 | Carrizo Oil & Gas, Inc. | Poesta Creek (2750) | 1 | 58 | 538K | Dec 1998 – Sep 2006 |
| Atlantic - Richfield G-2-155708 | Hughes, Dan A. Company | Cosden, West (Wilcox 8200) | 1 | 57 | 3.4K | Aug 1995 – Sep 1995 |
| Eberstadt G-2-256146 | Anderson Oil Ltd. | Caesar, N. (Pettus) | 1 | 53 | 53.1K | Apr 2010 – Apr 2012 |
| Ferrell, D. L. G-2-181497 | Corenergy Operating Group, LLC | Molina (Yegua) | 1 | 50 | 9.16K | Jan 2000 – May 2000 |
| Kocurek Gas Unit 1 G-2-247187 | Mmar Group Inc | Pawnee (Edwards) | 1 | 50 | 1.36M | Aug 2008 – Nov 2012 |
| Oehlke O-2-8855 | Hughes, Dan A. Company | Macdon (Hockley) | 1 | 49 | 0 | Mar 2004 – Mar 2004 |
| O'Brien-Harkins A G-2-170680 | C & E Operating, Inc. | Five O (Sinton) | 1 | 49 | 337K | Aug 1998 – Apr 2001 |
| Heard, C.E. "B" G-2-233420 | Lakeshore Operating, LLC | Heard Ranch (4400) | 1 | 47 | 78.4K | Aug 2006 – Aug 2026 |
| Wtu Robinson G-2-220217 | West Tuleta Operating Corp. | Tuleta, West (Wilcox 8750) | 1 | 46 | 2.78K | Mar 2006 – Mar 2006 |
| Wicker, E. H. G-2-172086 | Durango Resources Corp. | Ten-Ten (Frio 3600) | 1 | 45 | 148K | Dec 1998 – Jul 1999 |
| Thomson-Barrow Corp. G-2-171607 | C & E Operating, Inc. | Burkes Ridge (1600) | 1 | 44 | 68.4K | Nov 1998 – Jul 2000 |
| Ordner G-2-168798 | Edge Petroleum Oper. Co., Inc. | Fred Long (Hockley 3850) | 1 | 44 | 86.1K | Mar 1998 – Dec 1998 |
| R. E. Wolters G-2-255223 | Goldston Oil Corporation | Minoak (Slick 7300) | 1 | 43 | 12.7K | Aug 2009 – Apr 2012 |