| First National Bank Baldwin Unit G-6-168031 | Sheridan Production Co III, LLC only | Carthage (Pettit, Lower Gas) | Panola | 1 | 2.5K | 604K | Jan 1998 – Jan 2012 |
| Katy Gas Unit G-3-107244 | Douglas Petroleum Inc. only | Katy (First Wilcox) | Harris | 1 | 1.98K | 117K | by Jan 1993 – Sep 1998 |
| First National Bank of Goliad G-2-44420 | Apex Energy, Inc. only | Cabeza Creek, S. (Recklaw 7700) | Goliad | 1 | 1.88K | 496K | by Jan 1993 – Apr 2012 |
| Viboras Field Gas Unit No. 1 G-4-95941 | EOG Resources, Inc. only | Viboras ( Massive First East) | Brooks | 1 | 1.86K | 2.02M | by Jan 1993 – Jul 2022 |
| First National Trust G-14-140234 | Courson Oil & Gas, Inc. only | Ellis Ranch (Cleveland, UP) | Ochiltree | 1 | 1.7K | 611K | by Jan 1993 – Jul 2012 |
| First National Trust G-14-108008 | Courson Oil & Gas, Inc. only | Pan Petro (Cleveland) | Ochiltree | 1 | 1.51K | 707K | by Jan 1993 – Aug 2026 |
| Harrison Int. Ltd. et al Unit 2 G-3-103902 | Barnhart Co. only | Katy (First Wilcox) | Fort Bend | 1 | 1.45K | 28K | by Jan 1993 – May 1998 |
| Rowe Sweeny G/U G-3-111727 | Tartan Resources Corporation only | Delhi, North (First Wilcox) | Harris | 1 | 1.23K | 64.1K | by Jan 1993 – Jun 1995 |
| Stischer, Mary Ada G-1-131424 | Rincon Petroleum Corporation only | Roos, West (First Wilcox) | McMullen | 1 | 1.19K | 89K | by Jan 1993 – Feb 1998 |
| First National Bank G-3-159941 | Sue-Ann Operating, L.C. only | Midfields (Frio 8030) | Matagorda | 1 | 1.07K | 101K | Jul 1996 – Jan 2000 |
| Tucker Trust G. U. "A" G-3-113132 | R&R Resources Corporation only | Katy (First Wilcox) | Harris | 1 | 844 | 81K | by Jan 1993 – Jan 1998 |
| Freeman, C.E. GU G-3-109629 | Tartan Resources Corporation only | Delhi, North (First Wilcox) | Harris | 1 | 659 | 46.9K | by Jan 1993 – Mar 1995 |
| Munoz Unit G-4-149909 | Three C Exploration, LLC only | Capricorn (First Queen City) | Starr | 1 | 658 | 51.7K | May 1994 – Oct 2001 |
| First National Trust-Courson 571 G-14-226825 | Highmark Energy Operating, LLC only | Pan Petro (Cleveland) | Ochiltree | 1 | 658 | 287K | Jan 2007 – Aug 2026 |
| Escobar G-4-181294 | Fargo Oil & Gas, LLC only | Capricorn (First Queen City) | Starr | 1 | 582 | 83.9K | Feb 2001 – Jun 2012 |
| First Security Bank G-3-142261 | Snyder Oil Corporation only | Angelina (12900) | Jefferson | 1 | 506 | 22.1K | by Jan 1993 – Jun 1993 |
| West, W. W. G-4-11290 | Dewbre Petroleum Corporation only | Landa (Landa First) | Hidalgo | 1 | 399 | 112K | by Jan 1993 – Mar 2000 |
| Kleberg, R J Jr TR Viboras Past G-4-172160 | EOG Resources, Inc. only | Viboras (Massive First 6,V) | Brooks | 1 | 389 | 478K | Jan 1999 – Jun 2019 |
| Rollins Ranch G-2-186783 | First Rock, Inc. only | Dix Hollow (Hockley 4550) | Live Oak | 1 | 371 | 67.1K | Jan 2002 – Feb 2004 |
| First National Baldwin Unit G-6-150589 | Eqv Operating LLC only | Carthage, S. (Travis Peak, Up.) | Panola | 1 | 360 | 52.2K | Mar 1994 – Jun 1995 |
| First National Bank-Jacksboro C G-13-190223 | North Texas Plugging, LLC only | Pursley (Caddo Lime) | Jack | 1 | 310 | 2.6K | May 2002 – Aug 2005 |
| Edinburg Improvement Association G-4-173952 | Wynn-Crosby Operating, Ltd. only | Texan Gardens (Heard, First) | Hidalgo | 1 | 275 | 363K | Jun 1999 – Dec 2007 |
| Andrau G-3-162034 | Ultra Oil & Gas, Inc. only | Chocolate Bayou (Frio, First) | Brazoria | 1 | 259 | 14K | Feb 1997 – Jun 1997 |
| Hinnant G-2-240706 | Double Play Oil & Gas, Inc only | Burnett (Hockley, First) | Live Oak | 1 | 216 | 33.1K | Sep 2008 – Jan 2009 |
| First National Bank of Mission G-4-128995 | Amax Oil & Gas Inc. only | Alvarado (8090 Q Sand) | Starr | 1 | 215 | 40.4K | by Jan 1993 – Aug 1993 |
| Harrison Interest Ltd G-3-100245 | Barnhart Co. only | Katy (First Wilcox) | Fort Bend | 1 | 183 | 5.34K | by Jan 1993 – May 1998 |
| Munoz Unit G-4-149102 | Three C Exploration, LLC only | Capricorn (First Queen City) | Starr | 1 | 180 | 40.3K | Mar 1994 – Apr 2001 |
| Katy Gas Unit G-3-112106 | Douglas Petroleum Inc. only | Katy (First Wilcox) | Harris | 1 | 153 | 10.4K | by Jan 1993 – Nov 1993 |
| Rhode Ranch G-1-290653 | Texas Energen Inc. only | Rhode Ranch, East (Wilcox First) | McMullen | 1 | 130 | 5.45K | Nov 2020 – Jul 2026 |
| Papadopoulas Wgu G-3-107649 | Tartan Resources Corporation only | Delhi, North (First Wilcox) | Harris | 1 | 111 | 15.8K | by Jan 1993 – Feb 1995 |
| First National Bank G-3-149898 | Sue-Ann Production Company only | Midfields,west (-E-) | Matagorda | 1 | 87 | 9.93K | Jun 1994 – May 1996 |
| Somerset Land & Cattle Co. G-2-1141 | Burlington Resources O & G Co LP only | Chapa (Wilcox First) | Live Oak | 1 | 70 | 18K | by Jan 1993 – Oct 1995 |
| Hein, A.O. G-4-131965 | Arete Operating Company, LLC only | La Perla (Wilcox, First) | Zapata | 1 | 59 | 568K | by Jan 1993 – Mar 2026 |
| East, S. K. "A" G-4-141907 | Hughes, Dan A. Company only | Lytton Ranch, W. (First O'Hearn) | Jim Hogg | 1 | 53 | 1.04K | by Jan 1993 – Jan 1993 |
| First Natnl. Bank of Eagle Lake G-3-147206 | Bejo Corporation only | Mohat (3300) | Colorado | 1 | 32 | 121K | Oct 1993 – Mar 1995 |
| Guzman G-4-285182 | Escudo Oil & Gas, LLC only | Coastal, E. (Rincon First Sand) | Hidalgo | 1 | 14 | 734 | Jul 2018 – Aug 2026 |
| Hicks Gas Unit V G-2-3283 | Acock/Anaqua Operating Co., LP only | Normanna (Massive Wilcox First) | Bee | 1 | 12 | 165K | by Jan 1993 – Jan 1996 |
| Pettus G-2-173866 | U.S. Enercorp, LLC only | Riverdale (Massive First-Wilcox) | Goliad | 1 | 9 | 757 | Mar 1999 – Aug 1999 |
| Lundell G-4-116697 | First River Midstream, LLC only | Vaquillas Ranch (Lobo Cons.) | Webb | 1 | 5 | 66.1K | by Jan 1993 – Mar 2000 |
| First Natl. Bk. of Ft. Worth G-8-36553 | At Oil & Gas, LLC only | Eastland County Regular (Gas) | Eastland | 1 | 2 | 83K | by Jan 1993 – Aug 2026 |
| First State Bank of Stratford"a" G-14-171687 | Pantera Energy Company only | Texas Hugoton | Sherman | 1 | 0 | 365K | Nov 1998 – Aug 2026 |
| First St Bank of Stratford -B- G-14-246870 | Pantera Energy Company only | Texas Hugoton | Sherman | 1 | 0 | 443K | Jan 2009 – Aug 2026 |
| Arnim-Warren G-3-294509 | McA Petroleum Corporation only | Elm Grove (Cockrill, First) | Fayette | 1 | 0 | 0 | — |
| First St. Bank of Stratford -C- G-14-185041 | Pantera Energy Company only | Texas Hugoton | Sherman | 1 | 0 | 332K | Jul 2001 – Aug 2026 |
| First National Trust G-14-83693 | Courson Oil & Gas, Inc. only | Dude Wilson (Cleveland) | Ochiltree | 1 | 0 | 0 | — |
| First St Bank of Stratford -C- G-14-27878 | Pantera Energy Company only | Texas Hugoton | Sherman | 1 | 0 | 776K | by Jan 1993 – Aug 2026 |
| First St Bank of Stratford -B- G-14-27877 | Pantera Energy Company only | Texas Hugoton | Sherman | 1 | 0 | 1.1M | by Jan 1993 – Aug 2026 |
| First St Bank of Stratford -A- G-14-27876 | Pantera Energy Company only | Texas Hugoton | Sherman | 1 | 0 | 280K | by Jan 1993 – Dec 2008 |
| Samano "H" G-4-133513 | Petrovybe Opco LLC only | Yturria (First Masssive) | Starr | 1 | 0 | 0 | — |
| First St Bank of Stratford "A" G-14-246072 | Pantera Energy Company only | Texas Hugoton | Sherman | 1 | 0 | 260K | Dec 2008 – Aug 2026 |