| Ramirez, Jose Est. E G-4-199820 | Vantage Operating II, LLC only | Lopeno ( Reklaw B) | Zapata | 1 | 647 | 611K | Dec 2003 – Sep 2024 |
| Martinez-Ramirez Gas Unit G-4-223505 | Hilcorp Energy Company only | Cisco-Benavides (Lobo Cons.) | Zapata | 1 | 638 | 1.87M | Mar 2006 – Apr 2026 |
| Flores-Calishe Ranch G-4-225656 | Varas Energy Operating Company, only | Ramirez (Wilcox 8100) | Zapata | 1 | 624 | 550K | Feb 2007 – Jul 2023 |
| Ramirez, Jose Est. E G-4-196865 | Vantage Operating II, LLC only | Lopeno ( Reklaw B) | Zapata | 1 | 608 | 424K | Sep 2003 – Sep 2024 |
| Abel Ramirez G-4-221608 | Hilcorp Energy Company only | Flores, W. (Perdido) | Zapata | 1 | 553 | 191K | Jun 2006 – Apr 2026 |
| Ramirez, G. & F. Gas Unit G-4-137886 | Arete Operating Company III, LLC only | Fausto (Lobo) | Webb | 1 | 547 | 540K | by Jan 1993 – Aug 2024 |
| Ramirez, D. G-4-202984 | Hilcorp Energy Company only | Ramirez (Lobo) | Zapata | 1 | 534 | 584K | Aug 2004 – Apr 2026 |
| Ramirez G-4-150567 | Merit Energy Company only | Bob West (L-5-10) | Zapata | 1 | 462 | 1.48M | Jun 1994 – Aug 2000 |
| VT Ramirez G-4-219333 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 421 | 99K | May 2006 – Apr 2026 |
| Vielmann-Ramirez G-4-204733 | Hilcorp Energy Company only | Big Mac (8260) | Zapata | 1 | 393 | 589K | Oct 2004 – Apr 2026 |
| Ramirez, L. O. G-4-171015 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 360 | 325K | Jun 1998 – Nov 2015 |
| Ramirez, Abel G-4-222897 | Hilcorp Energy Company only | Flores, W. (Perdido) | Zapata | 1 | 349 | 831K | Jul 2006 – Apr 2026 |
| Ramirez, M. Gas Unit G-4-112904 | Hunter Petroleum Inc. only | Starr Brite, W. (6860 Yegua) | Duval | 1 | 348 | 6.09K | by Jan 1993 – Aug 1994 |
| Salinas-Ramirez Gas Unit G-4-157861 | Beehive Operating, LLC only | Bob West, North (L-1,L-2,L-3) | Zapata | 1 | 336 | 581K | Feb 1996 – Jul 2002 |
| Ramirez, M. Gas Unit G-4-114825 | Black Gold Operating Co, LLC only | Starr Brite, W. (6970 Yegua) | Duval | 1 | 334 | 43.7K | by Jan 1993 – Oct 2000 |
| Ramirez, L. O. A G-4-164941 | Hilcorp Energy Company only | Roleta (7483) | Zapata | 1 | 315 | 1.56M | Aug 1997 – Feb 2000 |
| Ramirez, D. G-4-202992 | Hilcorp Energy Company only | Charco (9400) | Zapata | 1 | 303 | 96.2K | Jun 2004 – Jul 2004 |
| Ramirez, L. O. A G-4-171423 | Hilcorp Energy Company only | Roleta (7483) | Zapata | 1 | 303 | 1.19M | Nov 1998 – Apr 2026 |
| M. Ramirez Gas Unit G-4-164409 | Black Gold Operating Co, LLC only | Starr Brite, W. (4900) | Duval | 1 | 282 | 193K | Nov 1996 – Apr 2024 |
| Ramirez, G. & F. Gas Unit G-4-80036 | Rosetta Resources Operating LP only | Las Hitas (Wilcox) | Webb | 1 | 277 | 52.9K | Jun 1997 – Feb 2003 |
| Vielmann-Ramirez "A" G-4-246219 | Hilcorp Energy Company only | Cisco-Benavides (Lobo Cons.) | Zapata | 1 | 270 | 579K | Dec 2008 – Apr 2026 |
| Ramirez O-1-11958 | Seeker Oil Company, Incorporated only | Monksfield (350 Sand) | Bexar | 16 | 264 | 49 | by Jan 1993 – Jan 1997 |
| Ramirez, Josefa G-4-180399 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 251 | 1.74M | Sep 2000 – Dec 2025 |
| Ramirez, M. R. G-4-179529 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 233 | 2.89M | Jul 2000 – May 2024 |
| Ramirez, Abel G-4-205655 | Hilcorp Energy Company only | Flores, W. (Perdido) | Zapata | 1 | 230 | 190K | Oct 2004 – Mar 2014 |
| Flores G-4-209792 | Hilcorp Energy Company only | Ramirez (Wilcox 8100) | Zapata | 1 | 225 | 2.22M | Feb 2005 – Apr 2026 |
| Flores G-4-205385 | Hilcorp Energy Company only | Ramirez (Wilcox 8100) | Zapata | 1 | 222 | 864K | Nov 2004 – Apr 2026 |
| Ramirez, M. R. G-4-190602 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 217 | 2.08M | Oct 2001 – Apr 2007 |
| Ramirez Gas Unit G-4-142830 | Blue Agave Resources, LLC only | Alworth(wilcox, Hinnant 1ST) | Jim Hogg | 1 | 207 | 469K | by Jan 1993 – Apr 2013 |
| Ramirez, C.H. G-4-75418 | Chevron U. S. A. Inc. only | Laredo (Lobo) | Webb | 1 | 181 | 50.9K | by Jan 1993 – Nov 1996 |
| Ramirez-Yzaguirre Gas Unit G-4-157555 | Beehive Operating, LLC only | Bob West (L-12, 13, 14, 15) | Zapata | 1 | 170 | 1.87M | Dec 1995 – Apr 2026 |
| Flores-Caliche Ranch 37 G-4-162554 | Varas Energy Operating Company, only | Ramirez (Wilcox 8100) | Zapata | 1 | 168 | 611K | Apr 1997 – May 2023 |
| Ramirez, Gilberto G-4-208847 | Pheffer Oil, L.L.C. only | Jones (4200 Jackson, N.) | Jim Hogg | 1 | 140 | 21.8K | Feb 2005 – Sep 2005 |
| Flores, R.G. et Al G-4-69143 | Cfo Resources, Inc. only | Ramirez (Wilcox 8400) | Zapata | 1 | 139 | 522K | by Jan 1993 – Feb 2013 |
| Ramirez, M. G-4-213681 | Hilcorp Energy Company only | Exsun (Lobo Cons.) | Zapata | 1 | 125 | 329K | Sep 2005 – Apr 2026 |
| Ramirez, D. G-4-197097 | Hilcorp Energy Company only | Charco (9200) | Zapata | 1 | 124 | 189K | Sep 2003 – Apr 2026 |
| G. & F. Ramirez Gas Unit G-4-186175 | Arete Operating Company III, LLC only | Fausto (Lobo) | Webb | 1 | 120 | 16.5K | Sep 2001 – Sep 2002 |
| Leyendecker-Ramirez GU 1 G-4-135951 | Sanchez-O'Brien Oil & Gas Corp. only | Laredo (Lobo) | Webb | 1 | 114 | 90.3K | by Jan 1993 – Aug 1995 |
| Ramirez O-1-7518 | Seeker Oil Company, Incorporated only | Alta Vista | Bexar | 8 | 106 | 49 | by Jan 1993 – Jan 1997 |
| Ramirez, M. R. G-4-179188 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 105 | 2.5M | Jul 2000 – Jul 2024 |
| Ramirez, M.R. G-4-129645 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 102 | 3.21M | by Jan 1993 – Jul 2024 |
| Esther Ramirez Williams Gas Unit G-4-215015 | Hilcorp Energy Company only | Exsun (Lobo Cons.) | Zapata | 1 | 79 | 1.8M | Jul 2005 – Apr 2026 |
| Ramirez, L. O. A G-4-173298 | Hilcorp Energy Company only | Roleta (Wilcox Consolidated) | Zapata | 1 | 75 | 3.13M | Apr 1999 – Apr 2026 |
| Ramirez, Abel G-4-65181 | Hilcorp Energy Company only | Ramirez (Wilcox 8400) | Zapata | 1 | 67 | 522K | by Jan 1993 – Oct 2020 |
| Ramirez, Maria V. G-4-152593 | Transtexas Gas Corporation only | Bob West (L-7) | Zapata | 1 | 67 | 79.8K | Nov 1994 – Nov 1995 |
| Ramirez, Josefa G-4-158629 | Dominion Expl. & Prod., Inc. only | Lopeno (Wilcox 10,200) | Zapata | 1 | 62 | 2.22M | May 1996 – May 2000 |
| Flores G-4-224961 | Hilcorp Energy Company only | Ramirez (Wilcox) | Zapata | 1 | 55 | 576K | Dec 2005 – Apr 2026 |
| Ramirez-Yzaguirre Gas Unit G-4-157832 | Beehive Operating, LLC only | Bob West, North (L-1,L-2,L-3) | Zapata | 1 | 53 | 22.6K | Mar 1996 – Oct 2024 |
| Ramirez, Maria V. G-4-161240 | Beehive Operating, LLC only | Bob West, North (12,900) | Zapata | 1 | 49 | 1.29M | Jan 1996 – Apr 2026 |
| Ramirez, Josefa G-4-166022 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 49 | 2.09M | Dec 1997 – May 2022 |