| Greer G-3-171377 | Fletcher Operating, LLC only | Jones Creek, North (Wilcox) | Wharton | 1 | 299K | 6.44M | Nov 1998 – Jan 2025 |
| Greer Unit G-3-163357 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Fayette | 1 | 92.5K | 3.31M | Mar 1997 – Apr 2026 |
| Greer, Mildred F. G-14-260144 | Mewbourne Oil Company only | Lipscomb (Cleveland) | Lipscomb | 1 | 52K | 1.68M | Nov 2010 – Apr 2026 |
| Mildred F. Greer G-14-255704 | Mewbourne Oil Company only | Lipscomb (Cleveland) | Lipscomb | 1 | 49K | 1.47M | Feb 2010 – Apr 2026 |
| Tutt-Greer (Alloc) G-6-283048 | Valence Operating Company only | Oak Hill (Cotton Valley) | Harrison | 1 | 23.1K | 5.6M | Aug 2017 – Apr 2026 |
| Greer, Mildred F. -880- G-14-151249 | BP America Production Company only | Mammoth Creek (Tonkawa) | Lipscomb | 1 | 15.5K | 433K | Jun 1994 – Jul 1999 |
| Greer, Cecil B. Gas Unit G-6-223438 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 7.62K | 898K | Sep 2006 – Apr 2026 |
| Greer, Cecil B. Gas Unit G-6-94961 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.52K | 722K | Jan 1993 – Apr 2026 |
| Greer, Cecil B. Gas Unit G-6-228318 | Soldier Creek Energy, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 6.32K | 875K | Feb 2007 – Apr 2026 |
| Greer, Cecil B. Gas Unit G-6-141438 | Mmgl East Texas III, LLC only | Blocker (Cotton Valley) | Harrison | 1 | 4.12K | 650K | Jan 1993 – Aug 2018 |
| Greer, Mildred F. G-14-108010 | Latigo Petroleum, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 3.94K | 435K | Jan 1993 – Mar 2026 |
| Greer, W. W. G-13-217596 | Texxol Operating Company, Inc. only | Alvord (Atoka Conglomerate) | Wise | 1 | 2.85K | 76.4K | Jun 2006 – Sep 2025 |
| Davis, Ester Greer Gas Unit G-6-234860 | XTO Energy Inc. only | Huxley (6100) | Shelby | 1 | 1.48K | 1.33M | Feb 2008 – Apr 2026 |
| Greer, Thomas B. G-6-119927 | North Lake Resources LLC only | Kendrick (James) | Nacogdoches | 1 | 909 | 263K | Jan 1993 – Jul 2003 |
| Greer G-13-149370 | McCutchin Petroleum Corporation only | Boonsville (Bend Congl., Gas) | Wise | 1 | 560 | 443K | May 1994 – Dec 2024 |
| Greer Gas Unit G-6-256152 | Adamas Energy LLC only | Angie (James Lime) | San Augustine | 1 | 354 | 1.7M | May 2010 – Apr 2026 |
| Greer, Mildred F. G-14-145359 | Enron Oil & Gas Company only | Mammoth Creek, North (Cleveland) | Lipscomb | 1 | 242 | 27.7K | Apr 1993 – Jun 1994 |
| Greer, T. A., et al Unit 1 G-6-29423 | Silver Oak Operating, LLC only | Bethany (Pettit) | Panola | 1 | 205 | 130K | Jan 1993 – Feb 2017 |
| Greer G-2-244755 | Blue Wing Energy, Inc. only | Flying -M- (Frio 4925) | Victoria | 1 | 188 | 116K | Dec 2008 – Mar 2024 |
| Greer G-2-181985 | Dale Operating Company only | Flying -M- (Frio 4925) | Victoria | 1 | 187 | 114K | Dec 2000 – Jul 2002 |
| Greer, Flavis G-13-102323 | Jay Management Company, LLC only | Morris (Consolidated Congl.) | Wise | 1 | 172 | 33.2K | Jan 1993 – Aug 1994 |
| Greer G-1-183515 | Rio-Tex, Inc. only | Goldman (Canyon) | Edwards | 1 | 165 | 164K | Jul 2000 – Apr 2020 |
| Greer Deep Gas Unit G-6-264683 | XTO Energy Inc. only | Carthage (Haynesville Shale) | Panola | 1 | 140 | 4.97M | Mar 2012 – Apr 2026 |
| Greer, T. A. G-6-113887 | LTS Oil & Gas only | Deberry, S.W. (Middle Pettit) | Panola | 1 | 134 | 40.1K | Jan 1993 – May 2000 |
| Greer, Thomas B. G-6-196754 | North Lake Resources LLC only | Kendrick (Travis Peak) | Nacogdoches | 1 | 130 | 38.4K | Aug 2003 – Jun 2022 |
| Greer, T.A. G-6-128778 | North Lake Resources LLC only | Deberry (Travis Peak) | Panola | 1 | 95 | 527K | Jan 1993 – Nov 2016 |
| Fossil Greer G-5-212314 | Contrast Energy, LLC only | Hilltop Resort (Bossier) | Leon | 1 | 69 | 3.39M | Jul 2005 – Apr 2026 |
| Greer, J.B. "A" G-8-122037 | Wells Oilfield Services, Inc. only | Reb (Marble Falls) | Eastland | 1 | 67 | 5.82K | Jan 1993 – Nov 1997 |
| Greer-Newton Unit G-13-21314 | Cholla Petroleum, Inc. only | Morris (Consolidated Congl.) | Wise | 1 | 32 | 9.66K | Jan 1993 – Nov 1993 |
| Greer, T. A. G-6-114376 | Moon Operating, Inc. only | Bethany, East (Cotton Valley) | Panola | 1 | 28 | 4.78K | Dec 1996 – Oct 1997 |
| Greer, James L. G-1-171045 | Rio-Tex, Inc. only | Goldman (Canyon) | Edwards | 1 | 3 | 1.43M | Jul 1999 – Jan 2026 |
| Greer G-6-242331 | North Lake Resources LLC only | Huxley (6100) | Shelby | 1 | 2 | 21.9K | Aug 2008 – Aug 2014 |
| Greer-McGinley Gas Unit G-10-91336 | Energen Resources Corporation only | Soda Lake (Fusselman) | Ward | 1 | 1 | 645K | Jan 1993 – Jan 2000 |
| Childress, Ed Heirs G-6-109185 | Greer Exploration Corporation only | Joaquin (Pettit, Lower) | Shelby | 1 | 1 | 14.4K | Jan 1993 – Jan 1994 |
| Greer, J. B. G-8-113743 | Wells Oilfield Services, Inc. only | Reb (Marble Falls) | Eastland | 1 | 0 | 5.47K | Jan 1993 – Nov 1997 |
| Hendricks, Zelda G-9-117949 | Greer, J. H. only | Fuzzy Creek (Goen) | Concho | 1 | 0 | 1.36K | Jan 1993 – Feb 1996 |
| Greer-McGinley Gas Unit G-10-41593 | Costilla Energy, Inc. only | G-M (Penn.) | Ward | 1 | 0 | 0 | — |
| Greer-Newton G-13-28883 | Cholla Petroleum, Inc. only | Boonsville (Bend Congl., Gas) | Wise | 1 | 0 | 0 | — |
| Greer, T. A. G-6-109627 | LTS Oil & Gas only | Bethany (Pettit) | Panola | 1 | 0 | 66 | Jun 2000 – Jun 2000 |
| Cook G-6-100699 | Greer Exploration Corporation only | Joaquin (Pettit, Lower) | Shelby | 1 | 0 | 0 | — |
| Southland Paper Mills G-6-57765 | Greer Operating only | Douglass,sw. (Pettit, Upper) | Nacogdoches | 1 | 0 | 4.97K | Jan 1993 – May 1997 |
| Greer, Robert et Al G-5-254432 | Aspect Energy, LLC only | Wildcat | McLennan | 1 | 0 | 0 | — |
| Pasnik-Hughey G-5-176291 | Greer Operating only | Bremond (Travis Peak) | Robertson | 1 | 0 | 2.9K | Jul 1999 – Oct 1999 |
| Greer, T.A. G-6-138483 | Sonat Exploration Company -Tyler only | Deberry, S.W. (Travis Peak 6500) | Panola | 1 | 0 | 43.6K | Feb 1993 – Mar 1995 |
| Greer G-6-257953 | Quality Petroleum, Inc. only | Longwood (Nacatoch) | Harrison | 1 | 0 | 0 | — |
| Greer SU G-6-262333 | Exco Operating Company, LP only | Carthage (Haynesville Shale) | San Augustine | 1 | 0 | 4.72M | Jul 2011 – Apr 2026 |
| Greer - Ironosa Alloc G-6-279411 | Exco Operating Company, LP only | Carthage (Haynesville Shale) | San Augustine | 1 | 0 | 6.1M | Jun 2015 – Apr 2026 |
| Watson, Floyd A. et Al G-6-119061 | Greer Exploration Corporation only | Joaquin, West (Glen Rose) | Shelby | 1 | 0 | 61.5K | Jan 1993 – Nov 2001 |
| T.A. Greer HV Unit B G-6-298800 | TGNR East Texas II LLC only | Carthage (Haynesville Shale) | Panola | 1 | 0 | 4.55M | Apr 2025 – Apr 2026 |
| T.A. Greer HV Unit A G-6-299725 | TGNR East Texas II LLC only | Carthage (Haynesville Shale) | Panola | 1 | 0 | 4.78M | Apr 2025 – Apr 2026 |