| Mathis, J. W. G-3-35826 | Wildfire Energy Operating LLC only | Madisonville (Sub-Clark, Gas) | — | 1 | 0 | 2.14M | Jan 1993 – Jul 2026 |
| Mathis, J. W. G-3-36615 | Wildfire Energy Operating LLC only | Madisonville (Dexter North) | — | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Mathis, J. W., Gas Unit #1 G-3-37388 | Parten Operating Inc. only | Madisonville (Sub-Clark, Gas) | — | 1 | 0 | 5.91K | Jan 1993 – Oct 2001 |
| Mathis, J. F. Unit G-3-116822 | Wildfire Energy Operating LLC only | Madisonville (Sub-Clark, Gas) | Madison | 1 | 0 | 877K | Jan 1993 – Jul 2026 |
| Mathis, J. W. G-3-138148 | Wildfire Energy Operating LLC only | Madisonville (Sub-Clark, Gas) | Madison | 1 | 0 | 809K | Jan 1993 – Jul 2026 |
| Mathis, James F. G-3-138714 | Wildfire Energy Operating LLC only | Madisonville (Sub-Clark, Gas) | Madison | 1 | 0 | 1.59M | Jan 1993 – Jul 2026 |
| Mathis, James F. G-3-146635 | Wildfire Energy Operating LLC only | Madisonville (Sub-Clark, Gas) | Madison | 1 | 0 | 1.25M | Sep 1993 – Jul 2026 |
| Mathis, J. W. Unit G-3-147388 | Parten Operating Inc. only | Madisonville (Sub-Clark, Gas) | Madison | 1 | 0 | 2.2M | Oct 1993 – Jul 2026 |
| Mathis, G. F. G-3-151589 | Stone Mountain Petroleum, LLC only | Madisonville (Sub-Clark, Gas) | Madison | 1 | 0 | 818 | Apr 1994 – Aug 2002 |
| Dinn, W. L. -A- G-4-11819 | Dinero Oil Corporation only | Mathis, East (Sinton 4400) | — | 1 | 0 | 1.98K | Jan 1993 – Apr 1994 |
| Person, Frieda G-4-11821 | Double Play Oil & Gas, Inc only | Mathis, East (Sinton 4400) | San Patricio | 1 | 0 | 0 | Jan 1993 – Apr 2008 |
| Merseburger, E. C. G-4-34909 | Aransas Drlg & Workover Co Inc only | Mathis, East (Frio 4000) | — | 1 | 0 | 0 | Jan 1993 – Oct 1993 |
| Jackson Ranch G-4-40729 | Silver Pines Energy Corp. only | Mathis, East (4100) | — | 1 | 0 | 136 | Jan 1993 – Jun 2001 |
| Jackson Ranch G-4-51650 | Alegre Energy, Inc. only | Mathis, East (4100) | — | 1 | 0 | 319K | Jan 1993 – Apr 2010 |
| Pruett G-4-55118 | Mortimer Production Company only | Mathis, N. (3810, S) | San Patricio | 1 | 0 | 307K | Jan 1993 – Jan 2008 |
| Nelson-George G-4-56658 | New Horizon Investments Ltd. only | Mathis, North (3300 Frio) | San Patricio | 1 | 0 | 47 | Jan 1993 – Jul 1993 |
| Winsauer -B- G-4-69872 | Blue Wing Energy, Inc. only | Mathis, East (Frio 5600) | — | 1 | 0 | 7.37K | Jan 1993 – Feb 2017 |
| London-Schroeder et AL G-4-73348 | Rea Oil & Gas, Inc. only | Mathis, East (Sinton 4400) | San Patricio | 1 | 0 | 0 | Jan 1993 – Aug 2005 |
| Mengers, Gus O. G-4-94698 | Exxcel Operating Company only | Mathis, E. (3755) | San Patricio | 1 | 0 | 0 | Jan 1993 – Nov 1998 |
| Person G-4-98233 | Reserve Operating Corp. only | Mathis, East (5550) | San Patricio | 1 | 0 | 80K | Jan 1993 – Feb 2000 |
| Gaitan, Raymundo G-4-107181 | New Horizon Investments Ltd. only | Mathis, N. (3900) | San Patricio | 1 | 0 | 0 | Jan 1993 – Sep 1995 |
| Steinkraus, F. G-4-108106 | Southwest Gathering Company only | Mathis,east (5500) | San Patricio | 1 | 0 | 115K | Jan 1993 – Feb 2009 |
| Owen, T. B. G-4-109946 | Southwest Gathering Company only | Mathis, East (4430) | San Patricio | 1 | 0 | 24.5K | Jan 1993 – Feb 2009 |
| Steinkraus G-4-110144 | Southwest Gathering Company only | Mathis, East (4430) | San Patricio | 1 | 0 | 42.5K | Jan 1993 – Jan 2009 |
| Wright Estate G-4-110624 | New Horizon Investments Ltd. only | Mathis, North (4100 Frio) | San Patricio | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Person, Frieda Unit G-4-111315 | Reserve Operating Corp. only | Mathis, East (5200) | San Patricio | 1 | 0 | 114K | Jan 1993 – Jan 1999 |
| Mengers, Gus O. G-4-111440 | Chaparral Energy, L.L.C. only | Mathis, East (5250) | San Patricio | 1 | 0 | 115K | Jan 1993 – Jan 2009 |
| Zimmerman G-4-114018 | Southwest Gathering Company only | Mathis, East (4600) | San Patricio | 1 | 0 | 212 | Jan 1993 – Jul 2001 |
| Zimmerman G-4-114064 | Southwest Gathering Company only | Mathis, East (4430) | San Patricio | 1 | 0 | 19.4K | Jan 1993 – May 2013 |
| Mengers, Gus O. G-4-115522 | Exxcel Operating Company only | Mathis, East (4100) | San Patricio | 1 | 0 | 0 | Jan 1993 – Nov 1998 |
| Ermis, George G-4-125662 | Salvador Oil, LLC only | Mathis, East (5410) | San Patricio | 1 | 0 | 506K | Jan 1993 – Sep 2019 |
| Four -S- G-4-127483 | Aransas Drlg & Workover Co Inc only | Mathis, East (la Rosa 4700) | San Patricio | 1 | 0 | 0 | Jan 1993 – Oct 1993 |
| Zimmerman G-4-128707 | Dinero Oil Corporation only | Mathis, E. (Kieschnick Sand) | San Patricio | 1 | 0 | 0 | Jan 1993 – Aug 1999 |
| Merseberger G-4-128917 | Salvador Oil, LLC only | Mathis, East (Schneider 4600) | San Patricio | 1 | 0 | 532K | Jan 1993 – Jul 2026 |
| Keeton -B- G-4-129023 | Dinero Oil Corporation only | Mathis, East (4290 Sand) | San Patricio | 1 | 0 | 10.3K | Jan 1993 – Aug 1999 |
| Schneider, E. G-4-129702 | Reserve Operating Corp. only | Mathis, East (Schneider 4600) | San Patricio | 1 | 0 | 139 | Jan 1993 – Apr 1994 |
| Merseberger G-4-130433 | Aransas Drlg & Workover Co Inc only | Mathis, East (Frio 4000) | San Patricio | 1 | 0 | 0 | Jan 1993 – Oct 1993 |
| Four, T.E. "S" G-4-130434 | Aransas Drlg & Workover Co Inc only | Mathis, East (Schneider 4600) | San Patricio | 1 | 0 | 0 | Jan 1993 – Aug 1994 |
| Schmidt G-4-130717 | Aransas Drlg & Workover Co Inc only | Mathis, East (5250) | San Patricio | 1 | 0 | 3.28K | Jan 1993 – Apr 1995 |
| Lovett, W. F. G-4-132506 | Johnson, William D. only | Mathis, East (4890) | San Patricio | 1 | 0 | 0 | Jan 1993 – May 2006 |
| Vanecek Gas Unit G-4-134475 | Magnum Producing & Operating Co. only | Mathis, East (Falling Star) | San Patricio | 1 | 0 | 344K | Jan 1993 – Jan 1997 |
| Huntsinger, H.T. G-4-135598 | Legacy Oil & Gas, Inc. only | Mathis, E. (3755) | San Patricio | 1 | 0 | 0 | Jan 1993 – Oct 1995 |
| Person, Frieda G-4-135961 | Reserve Operating Corp. only | Mathis, East (Sinton 4400) | San Patricio | 1 | 0 | 0 | Jan 1993 – Jul 1994 |
| Adams, Harold W. G-4-137041 | Legacy Oil & Gas, Inc. only | Mathis, East (Sinton 4400) | San Patricio | 1 | 0 | 18.8K | Jan 1993 – Jul 1993 |
| Huntsinger, H. T. G-4-137938 | Reserve Operating Corp. only | Mathis, East (4100) | San Patricio | 1 | 0 | 0 | Jan 1993 – Jul 1994 |
| Adams, H. W. G-4-139353 | Double Play Oil & Gas, Inc only | Mathis, E. (la Rosa 4750) | San Patricio | 1 | 0 | 24.3K | Jan 1993 – Nov 2015 |
| George G-4-141713 | DML Exploration, Inc. only | Mathis, North (3400 Frio) | San Patricio | 1 | 0 | 0 | Jan 1993 – Mar 1993 |
| Winsauer G-4-141946 | DML Exploration, Inc. only | Mathis, North (3710) | San Patricio | 1 | 0 | 0 | Jan 1993 – Sep 1994 |
| Huntsinger G-4-144350 | Blue Wing Energy, Inc. only | Mathis, East (4600) | San Patricio | 1 | 0 | 368K | Jan 1993 – Jul 2026 |
| Adams, Harold W. G-4-148073 | Legacy Oil & Gas, Inc. only | Mathis, East (4550) | San Patricio | 1 | 0 | 28.7K | Jul 1993 – Jul 2026 |