| Bennett, Mills Estate Fee O-4-12672 | Atlas Operating LLC | Mills Bennett (Consolidated) | 49 | 875K | 1.37M | Feb 1997 – Jul 2026 |
| Lopez O-4-13295 | Atlas Operating LLC | Encinitas (Frio 7310) | 2 | 378K | 347K | Feb 2005 – Jul 2026 |
| Bennett, Betsy "B" O-4-13300 | Tcrg Drilling & Operating, LLC | Palomas Ranch (Vicksburg 4) | 1 | 319K | 588K | Dec 2004 – Jul 2026 |
| Klumpp-Madison Oil Unit O-4-14009 | Logas Energy, LLC | LA Gloria (Atlee -B- Zone) | 1 | 295K | 336K | Sep 2016 – Jul 2026 |
| Murphy-Kruse O-4-13938 | EOG Resources, Inc. | LA Gloria (Atlee -B- Zone) | 1 | 245K | 316K | Jul 2014 – Sep 2018 |
| Kelsey Unit O-4-12931 | Overton Park Oil & Gas LP | Kelsey (Frio Consol.) | 35 | 231K | 401K | Jan 2000 – Jul 2026 |
| Noll Sand Gas Unit O-4-13363 | Millennium Exploration Co. LLC | Flowella (Frio 7900) | 1 | 215K | 370K | Jan 2004 – Jul 2026 |
| Trad/Kalifa O-4-12044 | Anderson Oil Ltd. | Scott & Hopper (7400-B) | 1 | 193K | 242K | Jan 1993 – Jul 2026 |
| Klumpp-Barrera O-4-13982 | Logas Energy, LLC | LA Gloria (Atlee -B- Zone) | 2 | 189K | 161K | Dec 2015 – Jul 2026 |
| Alexander /400 Ac./ O-4-2046 | Nylo Oil & Gas LLC | Palo Blanco (FB-S) | 4 | 182K | 55 | Jan 1993 – Jul 2026 |
| J. Murphy O-4-13862 | EOG Resources, Inc. | LA Gloria (Atlee -B- Zone) | 1 | 181K | 119K | Dec 2013 – Jul 2017 |
| Lopez, G.G. O-4-13385 | Hilcorp Energy Company | Kelsey (Frio Consol.) | 2 | 175K | 268K | Jun 2006 – Jul 2026 |
| Kelsey Unit O-4-5503 | Exxon Mobil Corporation | Kelsey, Deep (Zone 17-B, N) | 14 | 171K | 229K | Jan 1993 – Aug 2000 |
| Kleberg, R J Jr TR Quiteria Past O-4-13631 | EOG Resources, Inc. | Viboras (8500, South) | 3 | 168K | 394K | Dec 2010 – May 2026 |
| State-Marshall O-4-13111 | Overton Park Oil & Gas LP | Kelsey (Vxkbg. Consol.) | 5 | 148K | 827K | Jul 2002 – Jul 2026 |
| Sullivan, D.J. -B- O-4-12804 | Varas Energy Operating Company, | Pita (Frio Consolidated) | 20 | 139K | 534K | Aug 1998 – Jul 2026 |
| Garcia 1 O-4-111 | Varas Energy Operating Company, | Alta Mesa (Garcia Sand) | 7 | 137K | 394 | Jan 1993 – Jul 2026 |
| Kleberg, R J Jr TR Viboras Past O-4-12486 | EOG Resources, Inc. | Viboras (G-13, NE) | 2 | 130K | 124K | Jul 1995 – Dec 2024 |
| Betsy Bennett "D" O-4-13307 | Tcrg Drilling & Operating, LLC | EL Coyote Windmill (Vicksburg 6) | 1 | 120K | 667K | Jul 2005 – Apr 2026 |
| McGill Bros. O-4-12930 | Overton Park Oil & Gas LP | Kelsey (Frio Consol.) | 46 | 100K | 564K | Jan 2000 – Jul 2026 |
| Mestena Oil & Gas Co. 1 O-4-114 | D. O. G. Operating, LLC | Alta Mesa (Garcia Sand) | 12 | 98.4K | 166K | Jan 1993 – Jul 2026 |
| Bennett, Betsy O-4-13211 | Ballard Exploration Company,inc. | Mills Bennett, W. (Vicksburg) | 1 | 96.1K | 701K | Aug 2003 – Jun 2014 |
| Mil Pesos O-4-13165 | Mestena Operating, L.L.C. | Primavera (5500) | 2 | 90.4K | 153K | May 2003 – Sep 2013 |
| State-Marshall O-4-13112 | Exxon Mobil Corporation | Kelsey (Frio Consol.) | 10 | 77.4K | 1.24M | Jul 2002 – Nov 2012 |
| Bennett, Mills, Estate Fee O-4-4282 | Gaither Petroleum Corporation | Mills Bennett ( C-3 Sand) | 3 | 75.8K | 71.4K | Jan 1993 – Aug 1997 |
| Alexander, Kathleen Jones O-4-7985 | Nylo Oil & Gas LLC | Palo Blanco | 3 | 74.5K | 21 | Jan 1993 – Jul 2026 |
| Tres Puertas O-4-13153 | D. O. G. Operating, LLC | Alta Mesa, N. (2940) | 1 | 65.4K | 0 | Apr 2003 – Jul 2026 |
| Cantu O-4-9758 | Evergreen Operating Co., Ltd. | Loma Blanca, North (6800) | 1 | 63.5K | 0 | Jan 1993 – Jul 2026 |
| Sullivan, D. J. -B- O-4-5556 | Costilla Energy, Inc. | Pita (D-5 B-C) | 2 | 56.2K | 171K | Jan 1993 – Mar 1999 |
| McGill Bros. O-4-5140 | Exxon Mobil Corporation | Kelsey, Deep (Zone 22-A) | 6 | 55.3K | 138K | Jan 1993 – Jun 2000 |
| Bennett, Mills Est. Fee O-4-12568 | Gaither Petroleum Corporation | Mills Bennett (Ten Sand) | 1 | 48.9K | 1.47K | Dec 1995 – Aug 1997 |
| Mestena Oil & Gas Co. 1 O-4-5562 | Mestena Operating, Ltd. | Alta Mesa (L-12) | 1 | 43.9K | 112K | Jan 1993 – Mar 2008 |
| Garcia, Abraham O-4-12475 | Anderson Oil Ltd. | Scott & Hopper (7400-B,s) | 1 | 41.1K | 58.8K | Jun 1995 – Jul 2026 |
| McGill Bros. NCT-1 O-4-9480 | Texaco E & P Inc. | Kelsey, Deep (Zone 19-a, NE) | 3 | 40K | 20.2K | Jan 1993 – Feb 2000 |
| Kelsey Unit O-4-8310 | Exxon Mobil Corporation | Kelsey, Deep (Zone 22) | 3 | 39.7K | 46.5K | Jan 1993 – Jun 2000 |
| Galindo-Kibbe Unit O-4-13845 | Logas Energy, LLC | LA Gloria (Atlee -B- Zone) | 1 | 37.8K | 22.6K | Apr 2014 – Jul 2026 |
| Garcia, A. et AL O-4-11253 | Anderson Oil Ltd. | Alta Mesa, East | 1 | 36K | 1.38K | Jan 1993 – Jul 2026 |
| Tres Puertas O-4-13351 | D. O. G. Operating, LLC | Alta Mesa (H-6) | 1 | 35.3K | 0 | Jan 2006 – Jul 2026 |
| Lopez O-4-13425 | Atlas Operating LLC | Encinitas (Frio 7129) | 1 | 34K | 240K | Feb 2007 – Jul 2026 |
| McGill Bros. O-4-7011 | Exxon Mobil Corporation | Kelsey, Deep (Zone 16-a, W) | 3 | 33.6K | 26.3K | Jan 1993 – Jun 2000 |
| Gonzalena O-4-13229 | Mestena Operating, L.L.C. | Alta Mesa (6250 Vicksburg) | 1 | 32.9K | 17.2K | May 2004 – Aug 2014 |
| Welder, E. H. "E" O-4-12390 | McGowan Working Partners, Inc. | Rooke (7100 A) | 2 | 30.9K | 394K | Sep 1994 – Jul 2026 |
| Poso O-4-13164 | D. O. G. Operating, LLC | Alta Mesa (L-12) | 1 | 30.9K | 6 | Jun 2003 – Jul 2026 |
| Bennett, Mills O-4-12433 | Gaither Petroleum Corporation | Mills Bennett (L Sand) | 1 | 30.8K | 70.2K | Jan 1995 – Aug 1997 |
| Kleberg,r.j.jr.tr-Viboraspasture O-4-5591 | Exxon Mobil Corporation | Viboras ( G-13-C) | 8 | 30.6K | 39.7K | Jan 1993 – Apr 2006 |
| Cage Ranch O-4-12723 | Westport Oil and Gas Company, LP | Cage Ranch (6900) | 1 | 29.9K | 60.7K | Jul 1997 – Dec 2004 |
| Sullivan, D.J. "B" O-4-12412 | Costilla Energy, Inc. | Pita (D-5-U) | 2 | 26.2K | 115K | Sep 1994 – Mar 1999 |
| McGill Bros. O-4-6604 | Exxon Mobil Corporation | Kelsey, Deep (Zone 21-R, C) | 3 | 25.1K | 57K | Jan 1993 – Jul 2000 |
| Scott & Hopper 'A' O-4-13141 | Omta Operating LLC | Alta Mesa, NE. (Vksbrg OW5-A) | 1 | 21.7K | 131K | Sep 2002 – Jul 2026 |
| Palmer State 348 O-4-13268 | Merit Energy Company | Home Run (Vicksburg Cons.) | 1 | 21.5K | 1.33K | Jan 2005 – Jul 2026 |