| Ramirez et Al G-4-226856 | EP Energy E&P Company, L.P. only | Wildcat | Zapata | 1 | 0 | 883 | Apr 2007 – Apr 2007 |
| Ramirez, N. G. G-4-231861 | El Paso E&P Zapata, L.P. only | Big Mac (6470) | Zapata | 1 | 0 | 0 | — |
| Ramirez G-4-247046 | Momentum Production Corp. only | Zim-Ricaby (2600) | Starr | 1 | 0 | 270 | Oct 2010 – Nov 2010 |
| Ramirez G-4-261275 | Modern Exploration, Inc. only | La Encantada (Vicksburg 8800) | Brooks | 1 | 0 | 0 | — |
| Ramirez, R. A. GU G-4-265439 | EOG Resources, Inc. only | Las Ovejas (Wilcox 8400) | Zapata | 1 | 0 | 0 | — |
| Ramirez, E. O-1-597 | Advanced Tertiary Oil Recvry Inc only | Fairfield | Bexar | 1 | 0 | 0 | — |
| Ramirez Gas Unit, J.E. O-4-9066 | Houston Exploration Company, The only | Wildcat | Webb | 1 | 0 | 0 | — |
| Ramirez O-4-9901 | B & B Operating Company only | Sullivan City, SE (3700) | Hidalgo | 2 | 0 | 1 | Mar 1993 – Mar 1993 |
| Ramirez, Nellie O-4-12103 | Lynn Energy Corporation only | Wildcat | — | 0 | 0 | 0 | — |
| Ramirez, A. Salinas O-4-13543 | Chapco, Inc. only | Wildcat | Duval | 1 | 0 | 0 | — |
| Osage-Ramirez O-1-12039 | Maverick Osage Oil Company, Inc. only | Carlota (Georgetown) | Maverick | 2 | 0 | 0 | — |
| Ramirez, Manuel Ramos G-4-22896 | Vantage Operating II, LLC only | Lopeno ( Reklaw B) | Zapata | 1 | 0 | 26.5K | Apr 2005 – Aug 2019 |
| Ramirez, M. R. G-4-130138 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 0 | 2.01M | by Jan 1993 – Mar 2012 |
| Ramirez/Yzaguirre G-4-158032 | Beehive Operating, LLC only | Bob West (L-12, 13, 14, 15) | Zapata | 1 | 0 | 265K | Feb 1996 – May 2024 |
| Ramirez GU "E" G-4-160895 | Merit Energy Company only | Bob West (L-5-10) | Starr | 1 | 0 | 0 | — |
| Ramirez-USA GU "E" G-4-164036 | Merit Energy Company only | Bob West (L-12, 13, 14, 15) | Starr | 1 | 0 | 0 | — |
| Gutierrez, J. M. G-4-179572 | Hilcorp Energy Company only | Ramirez (Lobo) | Zapata | 1 | 0 | 0 | — |
| Ramirez, Federico G-4-183707 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 0 | 124K | Feb 2005 – Aug 2009 |
| Ramirez O-4-10853 | Discovery Petroleum, L.L.C. only | Wildcat | Starr | 1 | 0 | 0 | — |
| Yzaguirre, Ramirez G-4-195025 | Beehive Operating, LLC only | Bob West (L-5-10) | Zapata | 1 | 0 | 30K | Oct 2002 – Sep 2024 |
| Ramirez, M. R. G-4-197322 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 0 | 175K | Oct 2003 – Aug 2024 |
| Ramirez, D. G-4-204638 | Hilcorp Energy Company only | Wildcat | Zapata | 1 | 0 | 0 | — |
| Ramirez, Abel G-4-208751 | Hilcorp Energy Company only | Flores, W. (Perdido) | Zapata | 1 | 0 | 0 | — |
| Ramirez, Abel G-4-222620 | Hilcorp Energy Company only | Wildcat | Zapata | 1 | 0 | 0 | — |
| Ramirez-Kunde Usw D O-2-12953 | Burlington Resources O & G Co LP only | Sugarkane (Eagle Ford) | Live Oak | 1 | 0 | 0 | — |
| Ramirez-Kunde Usw B O-2-12965 | Burlington Resources O & G Co LP only | Sugarkane (Eagle Ford) | Live Oak | 1 | 0 | 0 | — |
| Ramirez "A" G-4-190847 | Beehive Operating, LLC only | Wildcat | Zapata | 1 | 0 | 0 | — |
| Ramirez-USA GU "E" G-4-151327 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 7.45M | Jul 1994 – Oct 2004 |
| Ramirez-USA GU "E" G-4-158380 | Merit Energy Company only | Bob West (L-12, 13, 14, 15) | Starr | 1 | 0 | 3.27M | Jan 1996 – Aug 2026 |
| Ramirez-Yzaguirre G-4-160383 | Beehive Operating, LLC only | Bob West (L-12, 13, 14, 15) | Zapata | 1 | 0 | 130K | Feb 1996 – Feb 2003 |
| Ramirez, L. O. A G-4-162605 | Hilcorp Energy Company only | Roleta (7483) | Zapata | 1 | 0 | 5.8K | Nov 1996 – Nov 1996 |
| Ramirez GU "E" G-4-167423 | Merit Energy Company only | Bob West (L-5-10) | Starr | 1 | 0 | 0 | — |
| Ramirez, M. R. G-4-171958 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 0 | 1.48M | Dec 1998 – May 2026 |
| Ramirez Ltd G-4-204279 | Mid River Midstream LLC only | Escobas (Queen City 4540) | Zapata | 1 | 0 | 0 | — |
| Ramirez, H. G-4-204315 | Solo Operating Services, LLC only | Sejita, East (1220) | Duval | 1 | 0 | 227K | Aug 2004 – Jun 2023 |
| Ramirez, Abel G-4-233352 | Hilcorp Energy Company only | Flores, W. (Perdido) | Zapata | 1 | 0 | 46.1K | Dec 2006 – Aug 2026 |
| Ramirez, H. G-4-242248 | Solo Operating Services, LLC only | Sejita, East (550) | Duval | 1 | 0 | 30K | Apr 2008 – Jun 2023 |
| Ramirez-USA GU "E" G-4-243495 | Merit Energy Company only | Bob West (L-12, 13, 14, 15) | Starr | 1 | 0 | 0 | — |
| Y. Ramirez Gas Unit G-4-259316 | Hilcorp Energy Company only | Exsun (Lobo Cons.) | Zapata | 1 | 0 | 0 | — |
| Ramirez GU 'E' G-4-278501 | Merit Energy Company only | Bob West (L-5-10) | Starr | 1 | 0 | 0 | — |
| Ramirez, Josefa G-4-11537 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 0 | 0 | — |
| Ramirez-USA GU "E" G-4-148278 | Merit Energy Company only | Bob West (L-18, 20, 21, 22) | Starr | 1 | 0 | 13.3M | Dec 1993 – Sep 2004 |
| Ramirez/Yzaguirre G-4-156996 | Beehive Operating, LLC only | Bob West (L-18, 20, 21, 22) | Zapata | 1 | 0 | 23.2K | Aug 1995 – Jan 1996 |
| Ramirez-USA GU "E" G-4-161074 | Merit Energy Company only | Bob West (L-12, 13, 14, 15) | Starr | 1 | 0 | 0 | — |
| Ramirez, Josefa G-4-168411 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 0 | 125K | May 1998 – May 2014 |
| Ramirez, M. R. G-4-177583 | Vantage Operating II, LLC only | Lopeno (Consolidated) | Zapata | 1 | 0 | 1.95M | May 2000 – Mar 2020 |
| Ramirez, M. R. G-4-200885 | Vantage Operating II, LLC only | Lopeno ( Reklaw B) | Zapata | 1 | 0 | 313K | Oct 2003 – May 2024 |
| Ramirez, Blas G-4-211154 | Vantage Operating II, LLC only | Wildcat | Zapata | 1 | 0 | 0 | — |
| Ramirez -B- G-2-112960 | Petra Oleum Corp. only | Tynan, East (2160) | Bee | 1 | 0 | 12.7K | by Jan 1993 – Oct 1998 |