| Ray, George A. Ranch G-2-135266 | Amend Energy Company | Tulsita-Wilcox (Era) | 1 | 16K | 126K | by Jan 1993 – Dec 1994 |
| Knight Ranch G-2-240762 | Welderxp Ltd. | Cannan, South (10100 Wilcox) | 1 | 15.9K | 698K | Sep 2008 – Feb 2024 |
| Strauch G-2-245917 | Petrovybe Opco LLC | Strauch-Wilcox (9600) | 1 | 15.8K | 524K | Feb 2009 – May 2026 |
| Riggle-Wendtland O-2-7241 | Blue Wing Energy, Inc. | Sliva, Southwest (Frio Sugarek) | 1 | 15.8K | 6.66K | by Jan 1993 – Feb 2017 |
| Walton G-2-265536 | Sydson Energy, Inc. | Ray (Vicksburg-Hockley) | 1 | 15.7K | 99K | Jun 2012 – Feb 2024 |
| Bumble Bee A G-2-294342 | Warwick-Artemis, LLC | Sugarkane (Eagle Ford) | 1 | 15.7K | 1.22M | Feb 2023 – Aug 2026 |
| Winsauer, O.W. O-2-5777 | Anderson Oil Ltd. | Berkow (Kohler) | 1 | 15.4K | 50.3K | by Jan 1993 – Dec 2007 |
| Erp, Will Estate G-2-87955 | Chaparral Energy, L.L.C. | Plummer-Wilcox (8500) | 1 | 15.3K | 1.07M | by Jan 1993 – Feb 2010 |
| Long "A" O-2-8433 | Enco Exploration Company | Malone Ranch (Pettus, Lo.) | 2 | 15.1K | 47.8K | Jan 1999 – Jun 2000 |
| Hughes O-2-11225 | Texas Southern Petroleum Corp. | Ray (Vicksburg-Hockley) | 1 | 14.9K | 39 | Jun 2014 – Aug 2026 |
| Buzzard O-2-9076 | Wallis Energy, Inc. | Singleton (Pettus) | 1 | 14.8K | 0 | Oct 2006 – Jun 2026 |
| Rowling -G- O-2-9404 | T-C Oil Company, LLC | Blanco Creek (4000) | 1 | 14.7K | 15.7K | Mar 2010 – Oct 2014 |
| Hughes O-2-10903 | Headwaters Energy Partners, LLC | Norbee (3400) | 2 | 14.7K | 2.56K | Nov 2013 – Feb 2020 |
| Murphy, W. C. O-2-7624 | Outline Oil Company LLC | Papalote, E. (3250) | 1 | 14.7K | 21 | by Jan 1993 – Jul 2023 |
| Eberstadt O-2-10011 | Anderson Oil Ltd. | Caesar | 2 | 14.7K | 0 | May 2011 – Jul 2017 |
| Long "B" O-2-8589 | Headwaters Energy Partners, LLC | Singleton (Pettus) | 1 | 14.6K | 80.4K | Dec 2000 – Nov 2007 |
| Campbell, P. L. O-2-1847 | Sydson Energy, Inc. | Ray | 2 | 14.5K | 128 | by Jan 1993 – Sep 2003 |
| Schramm-Nasa G-2-229795 | Continental Operating Co. | Holzmark (12000) | 1 | 14.4K | 1.94M | Aug 2007 – Jun 2013 |
| Watkins, Larry G-2-200811 | Hughes, Dan A. Company, L.P. | Causey (11,100) | 1 | 14K | 1.44M | Dec 2003 – Oct 2006 |
| Turner Gas Unit O-2-10442 | Ensign Operating LLC | Pawnee (Wilcox) | 1 | 13.9K | 466K | Jun 2012 – Jan 2022 |
| Wood, H. C. O-2-71 | Mission River Systems, Inc. | Blanconia, South | 7 | 13.8K | 992 | by Jan 1993 – Jul 1998 |
| Goree G-2-228510 | Britanco, L.L.C. | Mineral, West (11000) | 1 | 13.8K | 823K | May 2007 – Aug 2026 |
| Bolland O-2-7483 | Discovery Energy Corp. CC | Bolland Ranch (Hockley) | 3 | 13.5K | 35 | by Jan 1993 – Aug 1997 |
| Collier Gas Unit #1 O/A G-2-68224 | Enco Exploration Company | Norbee (Slick) | 1 | 13.5K | 334K | by Jan 1993 – Jan 2004 |
| Hughes, Dan A. O-2-5872 | Dartex Energy Corporation | Friendship Church (Hockley) | 2 | 13.5K | 125 | by Jan 1993 – Jan 2018 |
| Wood, Bernadine O-2-5294 | Mission River Systems, Inc. | Blanconia, South | 2 | 13.5K | 686 | by Jan 1993 – Jun 1998 |
| Langtry-Shirley Trust O-2-11427 | Britanco, L.L.C. | Helm (Pettus) | 1 | 13.4K | 0 | Feb 2018 – Aug 2026 |
| Goodman O-2-9414 | Welderxp Ltd. | Yougeen (Hockley 4500) | 1 | 13.3K | 55.2K | Mar 2010 – Dec 2014 |
| Murphy, John -A- O-2-11386 | Bridwell Oil Co. | Papalote, E. (3200 B Stringer) | 1 | 13.2K | 0 | Nov 2017 – Aug 2026 |
| Davis, Alberta O-2-7341 | Lundberg Operating Corporation | Forked Creek (Frio 5050) | 1 | 13.2K | 845 | by Jan 1993 – Aug 1999 |
| Daugherty-Hicks -B- O-2-6384 | Staples, James W. Prod. Co. | Normanna (Hockley 3600) | 1 | 13.2K | 1.54K | by Jan 1993 – Aug 2026 |
| Aunt Audrey G-2-223302 | Britanco, L.L.C. | Yoward (9200) | 1 | 13K | 422K | Oct 2006 – Aug 2026 |
| Dominion Fee G-2-211703 | XTO Energy Inc. | Holzmark (11100, C2) | 1 | 13K | 2.54M | Jan 2005 – Dec 2012 |
| Kircher G-2-190721 | Kingfish Gathering LLC | Tynan, East (Frio 3420) | 1 | 12.9K | 108K | Oct 2001 – Apr 2014 |
| Looney Gas Unit G-2-294995 | Hydrocarbon Operating, Inc. | Theis, South(slick First) | 1 | 12.9K | 623K | Dec 2023 – Aug 2026 |
| Lazy F O-2-8923 | Charro Operating, L.L.C. | Dallas Husky (Yegua) | 1 | 12.9K | 678 | Nov 2003 – Jul 2005 |
| Stauss-Beck O-2-7218 | CLR Gauging Corp. | Mudhill (Hockley) | 1 | 12.6K | 4.03K | by Jan 1993 – Aug 2026 |
| Dougherty Estate O-2-5799 | Staples, James W. Prod. Co. | San Domingo, S. (Hockley) | 4 | 12.6K | 273 | by Jan 1993 – Dec 2001 |
| Npu ( Ray-8) G-2-148558 | Pennzenergy Exp. & Prod., L.L.C. | Tulsita-Wilcox ( 7,700) | 1 | 12.5K | 925K | Jan 1994 – Nov 1997 |
| Npu (Ray-8) G-2-173248 | Legend Natural Gas II, LP | Tulsita-Wilcox ( Massive) | 1 | 12.5K | 849K | Apr 1999 – May 2003 |
| Ray, George A. G-2-210454 | Paleo Oil Company LLC | Tulsita-Wilcox ( Slick) | 1 | 12.5K | 503K | Jun 2004 – Jul 2005 |
| Morris G-2-249298 | Mohican Operating, L.L.C. | Tuleta | 1 | 12.4K | 8.86K | Dec 2008 – Aug 2011 |
| Harris, Roy O-2-6437 | Republic Resources, LLC. | Tuleta, West (2800) | 1 | 12.3K | 43.3K | by Jan 1993 – Jun 1997 |
| Grissom G-2-219613 | Hughes, Dan A. Company, L.P. | Caesar, South (9600) | 1 | 12.3K | 219K | Feb 2006 – Aug 2007 |
| Trial O-2-9851 | Trailblazer Oil & Gas LLC | Norbee, S (Pettus) | 1 | 12.2K | 11.2K | Jul 2011 – May 2022 |
| Whiddon O-2-10910 | Enco Exploration Company | Fred Long (Hockley 3850) | 1 | 12K | 0 | Jun 2014 – Jul 2017 |
| Hoyer-Norwell O-2-8601 | Republic Resources, LLC. | Tuleta | 1 | 12K | 9.83K | Feb 2001 – May 2003 |
| South Texas Childrens Home O-2-8803 | Wofford, C. J. | Helm (Pettus) | 1 | 12K | 69.5K | Jun 2003 – Oct 2009 |
| Dirks-McKenzie O-2-6260 | CLR Gauging Corp. | Five Oaks (3150) | 1 | 12K | 355 | by Jan 1993 – Aug 2026 |
| Moore, Lon. S. O-2-6185 | Staples, James W. Prod. Co. | San Domingo, S. (Hockley) | 2 | 12K | 51.3K | by Jan 1993 – Jan 2005 |