| Mayo-Owens Gas Unit G-4-150059 | Abraxas Petroleum Corporation only | White Point East Deep(guedin LWR | San Patricio | 1 | 93.2K | 1.94M | Mar 1994 – Jul 1999 |
| Mayo Owens GU G-4-167107 | Southcoast Production Inc only | White Point, East (Consolidated) | San Patricio | 1 | 32.5K | 1.26M | Feb 1998 – Nov 2011 |
| Mayo-Koonce GU G-4-197769 | Energy Twenty Operating LLC only | White Point, East (Consolidated) | San Patricio | 1 | 23.1K | 842K | Sep 2003 – Jun 2019 |
| Williams, Mayo Heirs G-6-148124 | XTO Energy Inc. only | Beckville (Cotton Valley) | Panola | 1 | 19.7K | 2.14M | Jan 1994 – Apr 2026 |
| Mayo Owens GU G-4-190544 | Southcoast Production Inc only | White Point, East (Consolidated) | San Patricio | 1 | 18.2K | 419K | Aug 2002 – Jan 2015 |
| Williams, Mayo Heirs G-6-181014 | XTO Energy Inc. only | Beckville (Cotton Valley) | Panola | 1 | 17.6K | 1.72M | Dec 2000 – Apr 2026 |
| Williams, Mayo Heirs G-6-173375 | XTO Energy Inc. only | Beckville (Cotton Valley) | Panola | 1 | 15.6K | 1.59M | May 1999 – Apr 2026 |
| Williams, Mayo Heirs G-6-172876 | XTO Energy Inc. only | Beckville (Cotton Valley) | Panola | 1 | 15K | 1.62M | Apr 1999 – Aug 2016 |
| Williams, Mayo Heirs G-6-191976 | XTO Energy Inc. only | Beckville (Cotton Valley) | Panola | 1 | 12K | 1.24M | Sep 2002 – Apr 2026 |
| Blaschke-Mayo G-4-108270 | Hec Petroleum, Inc. only | Plymouth (I-47) | San Patricio | 1 | 11.8K | 579K | Jan 1993 – Aug 2004 |
| Williams, Mayo Heirs G-6-175665 | XTO Energy Inc. only | Beckville (Cotton Valley) | Panola | 1 | 10.5K | 1.23M | Nov 1999 – Dec 2016 |
| Elizondo G-4-146393 | Enron Oil & Gas Company only | Cinco de Mayo (Wilcox "C") | Zapata | 1 | 9.75K | 3.37M | Aug 1993 – Oct 1996 |
| Williams, Mayo Heirs G-6-191978 | XTO Energy Inc. only | Beckville (Cotton Valley) | Panola | 1 | 9.31K | 920K | Nov 2002 – Apr 2026 |
| Mayo-Owen Gas Unit G-4-52142 | Abraxas Petroleum Corporation only | White Point, East (Owens) | San Patricio | 1 | 7.86K | 224K | Jan 1993 – Jan 1998 |
| Gutierrez, J.M. A G-4-145761 | Varas Energy Operating Company, only | Cinco de Mayo (Consolidated) | Zapata | 1 | 7.3K | 3.7M | Jun 1993 – May 2000 |
| Gutierrez, J. M. "C" G-4-166080 | Enron Oil & Gas Company only | Cinco de Mayo (Wilcox "E") | Zapata | 1 | 6.9K | 1.49M | Aug 1993 – Nov 1996 |
| Mayo Owens Gas Unit G-4-173897 | Peoples Energy Prod.-TX, L.P. only | White Point, East (Mayo) | San Patricio | 1 | 6.63K | 262K | Jul 1999 – Jul 2002 |
| Mayo Clinic G-14-136567 | Complete Oil & Gas Services, LLC only | Pan Petro (Cleveland) | Roberts | 1 | 6.5K | 661K | Jan 1993 – Aug 2025 |
| Gutierrez, J.M. A G-4-145745 | Varas Energy Operating Company, only | Cinco de Mayo (Wilcox "F") | Zapata | 1 | 6.33K | 2.14M | May 1993 – Aug 2023 |
| Gutierrez, J.M.C. G-4-144581 | Enron Oil & Gas Company only | Cinco de Mayo (Wilcox "F") | Zapata | 1 | 6K | 1.35M | Mar 1993 – Dec 1995 |
| Mayo, Blaschke G-4-167646 | Hec Petroleum, Inc. only | Plymouth (I-65) | San Patricio | 1 | 5.42K | 314K | Dec 1997 – Aug 2004 |
| Mayo G-13-288529 | Atoka Energy LLC only | White Mound (Oil Creek Sand) | Grayson | 1 | 5.4K | 539K | Jan 2020 – Apr 2026 |
| Mayo Koonce GU G-4-201058 | Southcoast Production Inc only | White Point, East (Consolidated) | San Patricio | 1 | 5.38K | 434K | Mar 2004 – Jun 2019 |
| Gutierrez, J. M. B G-4-146893 | Varas Energy Operating Company, only | Cinco de Mayo (Consolidated) | Zapata | 1 | 5.29K | 5.29M | Sep 1993 – Aug 2023 |
| Mayo-Owen GU G-4-80028 | Southcoast Production Inc only | White Point, East (Consolidated) | San Patricio | 1 | 4.93K | 442K | Jan 2006 – Jun 2019 |
| Mayo Owen GU G-4-199022 | Southcoast Production Inc only | White Point, East (Consolidated) | San Patricio | 1 | 4.63K | 114K | Nov 2003 – Sep 2005 |
| Gutierrez, J. M. A G-4-142619 | Varas Energy Operating Company, only | Cinco de Mayo (Consolidated) | Zapata | 1 | 4.6K | 5.16M | Jan 1993 – Apr 2021 |
| Gutierrez, J.M. A G-4-142990 | Bluestone Natural Res. II, LLC only | Cinco de Mayo (Consolidated) | Zapata | 1 | 4.55K | 5.61M | Jan 1993 – Sep 2011 |
| Whitehead G-6-123931 | Mayo, Eddie only | Minden (Travis Peak-Hunt) | Rusk | 1 | 4.45K | 83.2K | Jan 1993 – Jul 2001 |
| Mayo-Owen GU G-4-215037 | Energy Twenty Operating LLC only | White Point, East (Consolidated) | San Patricio | 1 | 4.34K | 92.7K | Oct 2005 – Jun 2015 |
| Mayo-Blaschke Unit No. 1 G-4-270118 | Sandalwood Exploration, L.P. only | Taft, North (D) | San Patricio | 1 | 4.11K | 146K | Feb 2012 – Aug 2016 |
| Elizondo G-4-146274 | Enron Oil & Gas Company only | Cinco de Mayo (Wilcox "E") | Zapata | 1 | 4.06K | 2.51M | Apr 1993 – Oct 1996 |
| Mayo Clinic G-14-212688 | Latigo Petroleum, LLC only | Pan Petro (Cleveland) | Ochiltree | 1 | 3.96K | 276K | Aug 2005 – Mar 2026 |
| Montemayor, Julia S. G-4-92133 | Discorbis Oil Company only | Montemayor (5500) | Duval | 1 | 3.91K | 457K | Jan 1993 – Jul 2003 |
| Gutierrez, J.M. C G-4-144991 | Varas Energy Operating Company, only | Cinco de Mayo (Consolidated) | Zapata | 1 | 3.76K | 4.32M | Mar 1993 – Aug 2023 |
| Gutierrez, J.M. A G-4-145520 | Varas Energy Operating Company, only | Cinco de Mayo (Consolidated) | Zapata | 1 | 3.75K | 2.8M | May 1993 – Mar 1997 |
| Mayo-Owen G.U. G-4-279136 | Energy Twenty Operating LLC only | White Point, East (Consolidated) | San Patricio | 1 | 3.35K | 86.8K | Oct 2015 – Jun 2019 |
| Gutierrez, J.M. B G-4-142564 | Enron Oil & Gas Company only | Cinco de Mayo (Wilcox "E") | Zapata | 1 | 3.14K | 1.78M | Jan 1993 – Nov 1996 |
| Elizondo G-4-146396 | Varas Energy Operating Company, only | Cinco de Mayo (Consolidated) | Zapata | 1 | 3.01K | 5.57M | Aug 1993 – Apr 2021 |
| Montemayor, Julia S. G-4-100522 | Discorbis Oil Company only | Montemayor (5500) | Duval | 1 | 2.87K | 451K | Jan 1993 – Jul 2003 |
| Gutierrez, J. M. C G-4-144162 | Enron Oil & Gas Company only | Cinco de Mayo (Wilcox "C") | Zapata | 1 | 2.72K | 1.38M | Jan 1993 – Mar 1995 |
| Gutierrez, J.M. A G-4-142986 | Enron Oil & Gas Company only | Cinco de Mayo (Wilcox "C") | Zapata | 1 | 2.68K | 4.62M | Jan 1993 – Nov 1996 |
| Gutierrez, J. M. C G-4-144237 | Varas Energy Operating Company, only | Cinco de Mayo (Consolidated) | Zapata | 1 | 2.61K | 4.5M | Jan 1993 – Jun 1998 |
| Gutierrez, J.M. A G-4-142599 | Varas Energy Operating Company, only | Cinco de Mayo (Consolidated) | Zapata | 1 | 2.35K | 6.33M | Jan 1993 – Feb 2025 |
| Benavides G-4-195602 | Merit Energy Company only | Cinco de Mayo (Wilcox "F") | Zapata | 1 | 2.35K | 270K | May 2003 – Apr 2026 |
| Gutierrez -C- G-4-128748 | Howard Exploration, Inc. only | Cinco de Mayo (3000) | Zapata | 1 | 1.84K | 157K | Jan 1993 – Apr 2005 |
| Dean, C. W. Gas Unit G-6-95992 | Mayo, Eddie only | North Timpson (Travis Peak) | Shelby | 1 | 1.83K | 31.7K | Jan 1993 – Jul 2001 |
| Gutierrez, J. M. A G-4-142603 | Enron Oil & Gas Company only | Cinco de Mayo (Wilcox "E") | Zapata | 1 | 1.72K | 2.49M | Jan 1993 – Nov 1996 |
| Brittain-Mayo Gas Unit G-4-174078 | Sandalwood Oil & Gas, Inc. only | Taft, West (6600 Frio) | San Patricio | 1 | 1.71K | 181K | Jul 1999 – Dec 2000 |
| Elizondo G-4-146273 | Varas Energy Operating Company, only | Cinco de Mayo (Consolidated) | Zapata | 1 | 1.7K | 2.09M | Aug 1993 – Dec 2023 |