| Alamosa -315- O-14-3662 | LDX Operating Company, LLC. only | Manarte (Granite Wash Upper) | Oldham | 3 | 568K | 7.47K | by Jan 1993 – Apr 2026 |
| South Texas Syndicate -B- O-1-3694 | Caribbean Energy LLC II only | Little Alamo | McMullen | 12 | 313K | 21 | by Jan 1993 – Apr 2026 |
| Voss "C" O-1-12784 | Alamo Operating Company, L. C. only | Pearsall (Austin Chalk) | Frio | 2 | 167K | 159K | by Jan 1993 – Mar 2015 |
| AD O-14-7766 | Arrow Oil & Gas, LLC only | Alamosa Dome (Canyon Reef) | Oldham | 2 | 143K | 0 | Nov 2006 – Oct 2023 |
| Alamo Natl Bnk., Trustee O-1-3424 | Caribbean Energy LLC II only | Jack Frost (Crockett) | La Salle | 5 | 59.8K | 21 | by Jan 1993 – Apr 2026 |
| Alamo B Unit G-13-273381 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 52.6K | 2.48M | Jul 2010 – Apr 2026 |
| Alamo a Unit G-13-273376 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 47.7K | 1.77M | Feb 2010 – Apr 2026 |
| Alamo B Unit G-13-273383 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 42.7K | 165K | Jul 2010 – Aug 2023 |
| Alamo a Unit G-13-273373 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 41.4K | 708K | Feb 2010 – Apr 2024 |
| Alamo O-10-43168 | Birch Operations, Inc. only | Spraberry (Trend Area) | Howard | 2 | 32.3K | 185K | Oct 2012 – Oct 2019 |
| Alamo a Unit G-13-273375 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 29K | 1.3M | Feb 2010 – Apr 2026 |
| Alamo B Unit G-13-273382 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 22.8K | 1.66M | Jul 2010 – Apr 2026 |
| Bennett O-1-14630 | Alamo Operating Company, L. C. only | Pearsall (Austin Chalk) | Frio | 1 | 20.2K | 1.08K | Jul 2005 – Aug 2006 |
| Mansfield "B" O-14-6877 | Rio Petroleum, Inc. only | Alamosa, East (Granite Wash) | Oldham | 1 | 19.6K | 4.06K | by Jan 1993 – Jul 1997 |
| Cook Family Trust G-3-192481 | Alamo Operating Company, L. C. only | Cecil Noble (Wilcox 10,300) | Colorado | 1 | 15.4K | 430K | Nov 2001 – Oct 2008 |
| Alamosa -315- O-14-3641 | LDX Operating Company, LLC. only | Manarte (Granite Wash) | Oldham | 3 | 12.9K | 2.99K | by Jan 1993 – Nov 2003 |
| Holdsworth, David O-1-15084 | Alamo Operating Company, L. C. only | Pearsall (Austin Chalk) | Zavala | 1 | 11.9K | 3.7K | Jan 2009 – Jun 2012 |
| Alamo Lumber Co. O-1-1312 | Seago Petroleum, Inc. only | Pearsall (Austin Chalk) | Frio | 3 | 10.7K | 25.6K | by Jan 1993 – Jul 1995 |
| McMillian O-1-16714 | Alamo Operating Company, L. C. only | Hammond (San Miguel NO 4) | Zavala | 1 | 5.62K | 0 | Aug 2010 – Oct 2014 |
| Sanford-Alamosa O-14-2787 | Losure, Ken only | Panhandle Hutchinson County Fld. | Hutchinson | 5 | 5.46K | 153K | by Jan 1993 – Aug 2011 |
| Toalson O-1-16154 | Alamo Operating Company, L. C. only | Pearsall (Austin Chalk) | Frio | 1 | 5.43K | 0 | Dec 2011 – May 2013 |
| Cook Family Trust O-3-25399 | Alamo Operating Company, L. C. only | Cecil Noble (9350) | Colorado | 1 | 5.19K | 35.6K | Jun 2009 – Nov 2009 |
| Alamosa 315 O-14-9797 | LDX Operating Company, LLC. only | Alamosa Dome (Canyon Reef) | Oldham | 2 | 4.61K | 0 | Mar 2025 – Apr 2026 |
| Limon G-4-217008 | Ventex Operating Corp. only | Alamo, East (10E) | Hidalgo | 1 | 3.99K | 1.58M | Mar 2006 – Jan 2013 |
| Hundley, Charles O-1-14773 | Alamo Operating Company, L. C. only | Superstition (Syndicate Sand) | McMullen | 1 | 3.88K | 0 | Jan 2006 – Mar 2009 |
| Limon Unit G-4-222023 | Ventex Operating Corp. only | Alamo, East (Royce) | Hidalgo | 1 | 3.64K | 1.37M | Apr 2006 – Sep 2012 |
| South Texas Syndicate -B- O-1-4539 | Swift Energy Company only | Little Alamo (6200) | McMullen | 1 | 2.08K | 1.46K | by Jan 1993 – Jul 1996 |
| Alamo National Bank Trustee G-1-66892 | Virtex Operating Company, Inc. only | Green Branch (Wilcox 2-D) | McMullen | 1 | 2.04K | 675K | by Jan 1993 – Apr 2016 |
| Jones G-2-229138 | Alamo Operating Company, L. C. only | Normanna (Consolidated) | Bee | 1 | 1.85K | 38.6K | Jun 2007 – Mar 2008 |
| Sweeney G-4-262650 | Wagner Oil Company only | Alamo (9300) | Hidalgo | 1 | 1.47K | 149K | Aug 2011 – Sep 2014 |
| Sweeney, J.J. G-4-147280 | Mission River Systems, Inc. only | Alamo (Sanders 7220) | Hidalgo | 1 | 1.18K | 52.3K | Oct 1993 – Oct 1999 |
| Alamo Royalty O-2-8482 | Sue-Ann Operating, L.C. only | Stewart (5550) | Jackson | 1 | 1.15K | 6.61K | Oct 1999 – Feb 2000 |
| Avila, Julia Gas Unit G-4-103866 | MW Petroleum Corporation only | Alamo (9300) | Hidalgo | 1 | 1.13K | 61.3K | by Jan 1993 – Feb 1996 |
| Sweeney, J. J. G-4-176655 | Mission River Systems, Inc. only | Alamo (8050) | Hidalgo | 1 | 1.01K | 349K | Mar 2000 – Nov 2001 |
| Alamo National Bank Trustee G-1-66926 | Virtex Petroleum Company, Inc. only | Little Alamo (6100) | McMullen | 1 | 798 | 30.2K | by Jan 1993 – Oct 1994 |
| Sweeney G-4-169475 | Vastar Resources, Inc. only | Alamo (Sweeney 6) | Hidalgo | 1 | 677 | 61.5K | Mar 1998 – Jun 1998 |
| Martindale O-1-14833 | Alamo Operating Company, L. C. only | Tres Encanto (Escondido) | La Salle | 1 | 677 | 19.7K | Jul 2007 – Apr 2008 |
| STS D O-1-20078 | Sierra Resources, LLC only | Little Alamo (6200) | McMullen | 1 | 520 | 502 | Nov 2019 – Feb 2021 |
| Alamo Productions, Inc. O-1-18213 | Rlu Operating, LLC only | Fairfield | Bexar | 2 | 515 | 23 | Jun 2015 – Sep 2020 |
| Santa Ana Gas Unit G-4-270264 | Varas Energy Operating Company, only | Alamo (9300) | Hidalgo | 1 | 370 | 64K | Dec 2012 – Apr 2026 |
| Sheives, A. L. G-2-229143 | Alamo Operating Company, L. C. only | Normanna (Consolidated) | Bee | 1 | 162 | 4.83K | Jun 2007 – Jun 2009 |
| Alamo National Bank Trustee G-1-82923 | Liquid Petroleum Resources, Inc. only | Green Branch (Wilcox 2-D) | McMullen | 1 | 141 | 59.6K | May 1998 – Jan 2011 |
| Alamo National Bank Trustee G-1-74318 | Liquid Petroleum Resources, Inc. only | Green Branch (6100) | McMullen | 1 | 130 | 102K | May 1998 – Jan 2011 |
| Alamo Royalty G-2-176816 | Sue-Ann Operating, L.C. only | Stewart (3650) | Jackson | 1 | 35 | 213K | Mar 2000 – Aug 2001 |
| Alamo National Bank Trustee G-1-122290 | Virtex Operating Company, Inc. only | Green Branch (Wilcox 2-D) | McMullen | 1 | 23 | 198K | by Jan 1993 – Apr 2003 |
| Alamo Royatly G-2-174805 | Sue-Ann Production Company only | Stewart (5800) | Jackson | 1 | 11 | 4.16K | Sep 1999 – Sep 1999 |
| Alamo National Bank Trustee G-1-61979 | Vintage Petroleum, Inc. only | Little Alamo (6100) | McMullen | 1 | 0 | 0 | — |
| Alamo National Bank Trustee G-1-66893 | Vintage Petroleum, Inc. only | Little Alamo (6100) | McMullen | 1 | 0 | 4.33K | by Jan 1993 – Aug 1994 |
| South Texas Syndicate G-1-123768 | Overly Operating Co. only | Big Alamo (5550) | La Salle | 1 | 0 | 32.9K | Feb 1996 – Nov 2001 |
| Alamo National Bank Trustee G-1-151742 | Vintage Petroleum, Inc. only | Green Branch (Wilcox 2-D) | McMullen | 1 | 0 | 0 | — |