| Otis O-13-33883 | Eagleridge Operating, LLC only | KRS (Marble Falls) | Palo Pinto | 1 | 3.76K | 152K | Dec 2018 – Aug 2026 |
| Cook, J. T. O-13-32855 | Proco Operating Co., Inc. only | KRS (Marble Falls) | Palo Pinto | 1 | 3.76K | 275K | Oct 2013 – Dec 2019 |
| Trice, W.G. Mrs O-8-11847 | Hogan, Wayne Oil Co. only | Oneta, E. (Marble Falls) | Shackelford | 2 | 3.75K | 40.2K | by Jan 1993 – Jun 2000 |
| Marley O-13-32364 | Oakridge Oil and Gas, LP only | KRS (Marble Falls) | Jack | 1 | 3.75K | 97.2K | Sep 2012 – Jan 2015 |
| Dawson G-13-269393 | B.O.L.D. Oil and Gas, LLC only | KRS (Marble Falls) | Jack | 1 | 3.7K | 699K | Nov 2012 – Aug 2026 |
| Lindsey G-13-280027 | FX Energy Operating, LLC only | KRS (Marble Falls) | Jack | 1 | 3.68K | 107K | Feb 2016 – May 2023 |
| Robertson-Deats O-13-29628 | Moriah Resources, Inc. only | Lost Valley (Marble Falls) | Jack | 1 | 3.68K | 40.6K | Mar 1999 – Sep 2002 |
| Knupp O-13-33401 | G & F Oil, Inc. only | KRS (Marble Falls) | Jack | 1 | 3.67K | 75.2K | Sep 2015 – Jun 2024 |
| Bridges, W. C. O-8-29247 | Lexgas, Inc. only | Pickwick (Marble Falls) | Palo Pinto | 1 | 3.65K | 73.2K | Feb 2003 – Dec 2022 |
| Maxwell Ranch O-8-31559 | Brigadier Operating, LLC only | Burns-Dalton(marble Falls) | Jack | 1 | 3.65K | 105K | May 2013 – Jun 2014 |
| Barton G-13-273693 | Eagleridge Operating, LLC only | KRS (Marble Falls) | Jack | 1 | 3.64K | 177K | Apr 2014 – Aug 2026 |
| Wright G-8-192600 | Pendragon Oil Co. only | Reb (Marble Falls) | Eastland | 1 | 3.64K | 115K | Dec 2002 – Jul 2026 |
| Nytex-Coley O-13-32780 | Borderline Operating Corp. only | KRS (Marble Falls) | Jack | 1 | 3.62K | 296K | Jun 2013 – Apr 2025 |
| Falls "C" O-11-67025 | Trek Resources, Inc. only | Sharon Ridge (Clear Fork) | Scurry | 2 | 3.61K | 42 | Apr 1993 – Nov 2020 |
| Pugh JV5 O-8-29771 | Coreterra Operating, LLC only | Moon, SE. (Marble Falls 3940) | Stephens | 1 | 3.61K | 15K | Aug 2006 – Sep 2010 |
| Big Horn 'B' Lease O-13-33844 | Legacy Exploration, LLC I only | KRS (Marble Falls) | Jack | 1 | 3.6K | 55K | Sep 2018 – Nov 2022 |
| Dorotha Owen G-13-274551 | Eagleridge Operating, LLC only | KRS (Marble Falls) | Jack | 1 | 3.59K | 70.3K | Jun 2014 – Apr 2021 |
| Gahagan-Burns O-13-32880 | D L Operating only | KRS (Marble Falls) | Jack | 1 | 3.58K | 40.9K | Jan 2013 – Aug 2026 |
| Joe Shown Trust Unit O-13-32218 | G & F Oil, Inc. only | Antelope,s.e. (Marble Falls) | Jack | 1 | 3.56K | 17.9K | Apr 2012 – Jul 2026 |
| Falls Unit G-4-161470 | LTS Oil & Gas only | Edinburg, N.W. (Frio D-1) | Hidalgo | 1 | 3.54K | 497K | Nov 1996 – Aug 2004 |
| Powell, Garland O-8-13083 | Powell-McCarroll Partnership only | Santa Anna, E. (Marble Falls) | Coleman | 3 | 3.51K | 17.6K | by Jan 1993 – Jun 2013 |
| E. Stewart O-13-32644 | Borderline Operating Corp. only | KRS (Marble Falls) | Jack | 1 | 3.51K | 160K | Aug 2013 – Mar 2024 |
| Craft O-13-33752 | G & F Oil, Inc. only | KRS (Marble Falls) | Jack | 2 | 3.49K | 53K | May 2018 – Jul 2026 |
| Repass G-8-275973 | Eagleridge Operating, LLC only | Burns-Dalton(marble Falls) | Palo Pinto | 1 | 3.49K | 610K | Sep 2014 – Jul 2025 |
| Lindsey Ranch "B" G-13-244539 | Eagleridge Operating, LLC only | Post Oak, SW. (Marble Falls) | Jack | 1 | 3.46K | 342K | Aug 2008 – Aug 2026 |
| Ritchie, J.P. G-8-130994 | Richey, Ray Management Co., Inc. only | Burns-Dalton(marble Falls) | Palo Pinto | 1 | 3.44K | 271K | by Jan 1993 – Mar 2013 |
| Sky Green O-8-31565 | Eagleridge Operating, LLC only | Burns-Dalton(marble Falls) | Palo Pinto | 1 | 3.43K | 149K | Mar 2014 – Oct 2023 |
| Wingate O-13-29068 | Fortson Oil Company only | Dyemound, S. (Marble Falls) | Montague | 1 | 3.41K | 25 | Jan 1996 – Apr 1999 |
| Woods O-13-32341 | Petrobal Omega 1, LLC only | KRS (Marble Falls) | Jack | 1 | 3.41K | 20.2K | Sep 2012 – Sep 2018 |
| Stovall Street O-13-30212 | Stovall Operating Co. only | South Bend, West (Marble Falls) | Young | 1 | 3.39K | 72.4K | Sep 2003 – Jul 2025 |
| Birdwell O-13-33430 | FX Energy Operating, LLC only | KRS (Marble Falls) | Jack | 1 | 3.39K | 27K | Sep 2015 – Mar 2020 |
| Peavy O-8-31566 | JDL Operating, LLC only | Burns-Dalton(marble Falls) | Jack | 1 | 3.38K | 224K | Jun 2013 – Apr 2016 |
| Pierce O-8-25395 | Otex LLC only | Byler H (Marble Falls) | Brown | 1 | 3.37K | 53 | by Jan 1993 – Aug 2026 |
| Pugh JV2 O-8-29729 | Coreterra Operating, LLC only | Moon, SE. (Marble Falls 3940) | Stephens | 1 | 3.34K | 36.8K | May 2006 – Sep 2010 |
| Doss G-8-125618 | Williams Prod. Gulf Coast, L.P. only | Granbury, NE. (Marble Falls) | Hood | 1 | 3.34K | 685K | by Jan 1993 – Dec 2010 |
| Nash N O-13-33017 | FX Energy Operating, LLC only | KRS (Marble Falls) | Jack | 1 | 3.34K | 137K | Jul 2014 – Aug 2018 |
| Conner, Ethel O-13-24328 | Bridwell Oil Co. only | Stewart (Marble Falls) | Jack | 3 | 3.33K | 95.7K | Feb 1993 – Aug 2014 |
| Beeler G-13-273538 | Eagleridge Operating, LLC only | KRS (Marble Falls) | Jack | 1 | 3.33K | 229K | Apr 2014 – Feb 2025 |
| Clerihew O-13-33964 | Blakenergy Operating, LLC only | KRS (Marble Falls) | Clay | 1 | 3.31K | 23.5K | Apr 2019 – Aug 2026 |
| Moczygemba, V. T. O-2-5368 | Legend Natural Gas II, LP only | Falls City (Umoc) | Karnes | 1 | 3.31K | 399 | by Jan 1993 – Nov 1996 |
| Carroll G-8-125397 | Eastland Operating, L.L.C. only | Reb (Marble Falls) | Eastland | 1 | 3.31K | 73.4K | by Jan 1993 – Aug 2026 |
| Hickman, I. N. O-8-19563 | Firerock Company only | Audrey (Marble Falls) | Eastland | 1 | 3.3K | 12.8K | by Jan 1993 – Apr 2008 |
| Holcomb, V. -D- O-13-9500 | Kramer Operating, LLC only | Karran, North (Marble Falls) | Young | 1 | 3.29K | 20 | by Jan 1993 – Aug 2009 |
| Texfel-Harrell O-8-27679 | Smith Pipe of Abilene only | Reb (Marble Falls) | Eastland | 3 | 3.29K | 15.2K | Oct 1995 – Feb 1998 |
| Carroll G-8-125396 | Eastland Operating, L.L.C. only | Reb (Marble Falls) | Eastland | 1 | 3.28K | 61.9K | by Jan 1993 – Aug 2026 |
| Allen Heirs G-8-175387 | Blackbird R 22 OG L.L.C. only | Momma Bear (Marble Falls) | Eastland | 1 | 3.24K | 320K | Nov 1999 – Sep 2025 |
| Rickels G-8-199573 | Upham Oil & Gas Company only | Pickwick (Marble Falls) | Palo Pinto | 1 | 3.21K | 242K | Jan 2004 – Aug 2026 |
| Flood, Hansen J. O-8-17565 | Western Production Company only | Lake Cisco (Marble Falls) | Eastland | 2 | 3.2K | 114K | by Jan 1993 – Mar 2010 |
| Stephenson O-8-22639 | Pendragon Oil Co. only | Reb (Marble Falls) | Eastland | 1 | 3.2K | 93.8K | by Jan 1993 – Sep 2017 |
| McCleskey O-8-22353 | Pendragon Oil Co. only | Reb (Marble Falls) | Eastland | 3 | 3.16K | 136K | by Jan 1993 – May 2026 |