| Jennings, J. D. O-4-6058 | Sue-Ann Operating, L.C. | Jennings, W. (Queen City NO 2) | 21 | 499K | 1.11M | Jan 1993 – Jul 2026 |
| Guerra, Raul O-4-10703 | Varas Energy Operating Company, | Lopeno ( Queen City Oil) | 3 | 206K | 485K | Jan 1993 – Jul 2026 |
| Jennings, J. D. O-4-9597 | Sue-Ann Operating, L.C. | Jennings, West (2100) | 4 | 164K | 158K | Jan 1993 – Jul 2026 |
| Jennings, J. D. O-4-1303 | Sue-Ann Operating, L.C. | Jennings | 24 | 95.9K | 11 | Jan 1993 – Jul 2026 |
| Ramirez, Blas O-4-7946 | Varas Energy Operating Company, | Lopeno ( Queen City Oil) | 1 | 78.4K | 158K | Jan 1993 – Jul 2026 |
| Jennings, J. D. O-4-13036 | Sue-Ann Operating, L.C. | Jennings, E. (Queen City NO.9) | 2 | 75.7K | 233K | Jun 2001 – Jul 2026 |
| Garcia, Anastasio O-4-4677 | Synthetic Energy Corporation | Charco Redondo | 214 | 71.4K | 1 | Jan 1993 – Jul 2026 |
| Jennings, J.D. O-4-12728 | Sue-Ann Operating, L.C. | Jennings, W. (1370) | 3 | 66K | 58K | Nov 1997 – Jul 2026 |
| Jennings, J. D. O-4-5823 | Sue-Ann Operating, L.C. | Jennings, West (Crockett) | 20 | 46.2K | 10 | Jan 1993 – Jul 2026 |
| Slator Ranch O-4-13753 | Mountain V Texas, LLC | Tartan (Yegua) | 5 | 45.2K | 0 | Aug 2012 – Jul 2026 |
| DE Lopez, Joseta M. O-4-8756 | Kendrick, Barbara S. | Mirando Valley | 3 | 31K | 22 | Jan 1993 – Jul 2026 |
| Escobas -B-E- Unit O-4-5301 | Energy 2000, Inc. | Escobas | 29 | 29.8K | 21 | Jan 1993 – Jul 2026 |
| Hal Lopeno O-4-14070 | Varas Energy Operating Company, | Lopeno ( Queen City Oil) | 3 | 26.8K | 48.9K | Jan 2018 – Jul 2026 |
| Cuellar, E. O-4-13657 | RMX Oil & Gas, LLC | Jennings, W. (3000 Sand) | 10 | 20K | 0 | Apr 2011 – Jul 2026 |
| Hinojosa, G. G. O-4-9789 | Block "T" Petroleum, Inc. | Randado Ranch (Queen City) | 7 | 16.2K | 3.82K | Jan 1993 – Jul 2026 |
| Cuellar, F. O-4-1304 | Zapata Oil Partners, L.L.C. | Jennings, W. (3000 Sand) | 22 | 14K | 1.1K | Jan 1993 – Jul 2026 |
| Trevino, E. O-4-724 | Energy 2000, Inc. | Escobas | 9 | 11.4K | 21 | Jan 1993 – Jul 2026 |
| Ramirez, Julian R., Est. -A- O-4-7194 | Finaly Resources LLC | Edlasater, W. (Manila) | 2 | 11K | 21 | Jan 1993 – Jul 2026 |
| Ramirez, Josefa, Etal O-4-6061 | Varas Energy Operating Company, | Lopeno ( Queen City Oil) | 2 | 10.1K | 29.7K | Jan 1993 – Jul 2026 |
| Chargos Creek "A" O-4-13593 | Zapata Oil Partners, L.L.C. | Cuellar | 2 | 6.02K | 0 | Feb 2010 – Jul 2026 |
| Cuellar,f. "a" Lease O-4-13303 | Pierco Energy Corp. | Jennings, W. (3000 Sand) | 12 | 5.14K | 1 | Apr 2005 – Jul 2026 |
| Bruni Min. Trust O-4-8052 | Killam Oil Co., Ltd. | Blas Uribe (Rosenberg) | 6 | 4.49K | 20 | Jan 1993 – Apr 2011 |
| J. D. Jennings O-4-13956 | Sue-Ann Operating, L.C. | Jennings, W. (Queen City No. 10) | 1 | 2.16K | 49 | Jan 2014 – Jul 2026 |
| Jennings, J. D. O-4-7871 | Sue-Ann Operating, L.C. | Jennings, W. (Sparta) | 28 | 1.65K | 737 | Jan 1993 – Jul 2026 |
| Jennings, J. D. O-4-6750 | S M K Energy Corporation | Jennings, W. (Queen City NO 3) | 2 | 838 | 6.62K | Jan 1993 – Nov 1995 |
| Ramirez, Manuel Ramos G-4-11539 | XTO Energy Inc. | Lopeno (Wilcox 8,500) | 1 | 0 | 0 | Jan 1993 – Apr 2013 |
| Ramos, Baltazar G-4-11546 | Vantage Operating II, LLC | Lopeno (Wilcox E) | 1 | 0 | 1.18M | Jan 1993 – Jul 2026 |
| Ramos, Baltazar G-4-11552 | XTO Energy Inc. | Lopeno (Wilcox 9,600) | 1 | 0 | 0 | Jan 1993 – Oct 2011 |
| Guerra, Avelino G-4-11553 | Dominion Expl. & Prod., Inc. | Lopeno (Wilcox 9,600) | 1 | 0 | 2.09K | Jan 1993 – Jun 2005 |
| Guerra, Raul G-4-11555 | Dominion Expl. & Prod., Inc. | Lopeno (10,100) | 1 | 0 | 1.68M | Jan 1993 – Jun 2005 |
| Guerra, Avelino G-4-11556 | Dominion Expl. & Prod., Inc. | Lopeno (Wilcox G) | 1 | 0 | 96.6K | Jan 1993 – Jun 2005 |
| Haynes Estate G-4-30651 | Sheridan Energy,inc. | Los Mogotes, North (Wilcox IV) | 1 | 0 | 0 | Jan 1993 – Jul 1999 |
| Jennings G-4-37148 | S M K Energy Corporation | Jennings, West (Crockett) | 1 | 0 | 0 | Jan 1993 – Jun 1994 |
| Jennings, J. D. G-4-38703 | Kovar Operating, LLC | Jennings, West (Crockett) | 1 | 0 | 15.5K | Jan 1993 – Aug 2019 |
| Jennings G-4-39785 | Kovar Operating, LLC | Jennings, West (Crockett) | 1 | 0 | 160K | Jan 1993 – Jan 2016 |
| Jennings G-4-41067 | Peoples Energy Prod.-TX, L.P. | Jennings, West (Crockett) | 1 | 0 | 5.65K | Jan 1993 – Mar 2006 |
| Bruni Est. GU G-4-51749 | Pennzoil Exploration & Prod. Co. | Davis, S. ( Puig) | 1 | 0 | 0 | Jan 1993 – Nov 1997 |
| Bruni Est. GU G-4-51767 | Pennzoil Exploration & Prod. Co. | Davis, S. ( 4TH Hinnant) | 1 | 0 | 0 | Jan 1993 – Aug 1994 |
| Haynes G-4-54669 | Pennzoil Exploration & Prod. Co. | Comitas (8900) | 1 | 0 | 0 | Jan 1993 – Oct 1997 |
| Haynes G-4-54670 | Pennzoil Exploration & Prod. Co. | Comitas (9600) | 1 | 0 | 0 | Jan 1993 – Oct 1997 |
| Fullbright, J.E. et AL G-4-56689 | Cowen Equipment | Davis, S. (Thies) | 1 | 0 | 0 | Jan 1993 – Oct 2006 |
| Haynes G-4-58430 | Pennzenergy Exp. & Prod., L.L.C. | Comitas (8900) | 1 | 0 | 1.29M | Jan 1993 – Mar 2000 |
| Haynes G-4-58511 | Hilcorp Energy Company | COMITAS(8600) | 1 | 0 | 722K | Jan 1993 – Jul 2026 |
| Cuellar, F G-4-59809 | Gecko Oil & Gas, Inc. | New Zapata (1800) | 1 | 0 | 4.74K | Jan 1993 – May 2008 |
| Martin, J. C. G-4-60439 | Hilcorp Energy Company | J. C. Martin (Lobo) | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Thomasma, Ray J. G-4-61343 | Devon Energy Production Co, L.P. | Davis (Crockett) | 1 | 0 | 0 | Jan 1993 – Feb 2007 |
| McCampbell, E.A. G-4-65065 | Altalay STX LLC | Alworth(wilcox, Hinnant 1ST) | 1 | 0 | 299K | Jan 1993 – Nov 2022 |
| Trevino, J. B. Estate G-4-66567 | Yates Operating Corp. | M & F (Wilcox 6450) | 1 | 0 | 0 | Jan 1993 – Nov 1993 |
| Rathmell, J.G. G-4-68875 | Merit Energy Company | Hundido (Lobo) | 1 | 0 | 1.89M | Jan 1993 – Jul 2026 |
| McMurrey, Wm. G-4-68912 | Hilcorp Energy Company | LA Perla (Lobo Cons.) | 1 | 0 | 625K | Jan 1993 – Jul 2026 |