| Turner Unit G-13-199673 | Key Energy of Colorado, Inc. only | Down Under (Chappel) | Hardeman | 1 | 17K | 389K | Jul 2003 – Mar 2010 |
| Chappell G-6-189680 | Rose City Resources, LLC only | Rosewood (Cotton Valley) | Upshur | 1 | 4.77K | 218K | Apr 2002 – Apr 2018 |
| Ferguson G-13-185334 | Petex only | Bartons Chappel E. (Congl. 4850) | Jack | 1 | 2.78K | 282K | Sep 2001 – Apr 2026 |
| Jeter "15" Unit G-8-156563 | Van Operating, Ltd. only | Easter Brothers (Chappell) | Shackelford | 1 | 1.9K | 937K | Nov 1995 – Apr 2015 |
| Sage-Keller "A" G-8-130606 | Friendly Energy Services, Inc. only | Thrifty, S. (Chappel Reef) | Brown | 1 | 1.36K | 8.07K | May 1996 – Feb 2011 |
| Lesikar G-8-108218 | Chapparal Operating Co. only | Toto (Caddo Conglomerate) | Parker | 1 | 367 | 753K | Jan 1993 – Apr 2026 |
| Walters G-13-97678 | Wolsey Well Service, L.P. only | Perrin (Chappell Lime) | Jack | 1 | 313 | 180K | Jan 1993 – Feb 2003 |
| Lesikar, Wm. G-8-99952 | Chapparal Operating Co. only | Lesikar (Atoka) | Parker | 1 | 312 | 388K | Jan 1993 – Oct 2018 |
| Chappell Gas Unit G-5-232163 | Ironwood Oil & Gas LLC only | Roundhouse (Haynesville) | Navarro | 1 | 237 | 6.29K | Oct 2007 – Oct 2011 |
| Robey G-8-129978 | Chapparal Operating Co. only | Harriet, L. (Miss.) | Eastland | 1 | 219 | 45.2K | Jan 1993 – Oct 2019 |
| Gobbler Hollow G-8-202387 | Friendly Energy Services, Inc. only | Thrifty, S. (Chappel Reef) | Brown | 1 | 166 | 5.7K | Sep 2003 – Mar 2013 |
| Caraway, F.E. G-8-130833 | Chapparal Operating Co. only | Harriet, L. (Miss.) | Eastland | 1 | 162 | 83.2K | Jan 1993 – Apr 2026 |
| Hartman, R. L. G-8-112542 | Chapparal Operating Co. only | Tim Mitchell (5300 Congl.) | Parker | 1 | 157 | 189K | Jan 1993 – Apr 2026 |
| Graham G-13-102863 | Schlittler, Willard only | Graham (Chappel) | Jack | 1 | 154 | 4.05K | Aug 2014 – May 2025 |
| Lesikar, L.W. G-8-77044 | Chapparal Operating Co. only | Meeker (Conglomerate 4000) | Parker | 1 | 114 | 43.1K | Jan 1993 – Nov 2013 |
| Sage-Kepler G-8-125727 | D.J. & T. Energy only | Thrifty, S. (Chappel Reef) | Brown | 1 | 113 | 49.4K | Jan 1993 – Mar 2018 |
| Sage-Ramage G-8-132163 | Jurassic Operating Company, Inc. only | Thrifty, S. (Chappel Reef) | Brown | 1 | 103 | 669 | Jun 1996 – Oct 1996 |
| Atc Thomas G-8-133769 | Friendly Energy Services, Inc. only | Thrifty, S. (Chappel Reef) | Brown | 1 | 80 | 6.06K | May 1996 – Nov 2010 |
| Mashburn G-8-109049 | R & D Operating, Inc. only | HA da CA (Chappel Reef) | Brown | 1 | 76 | 53.3K | Jan 1993 – Feb 2016 |
| Lesikar, L.W. "A" G-8-78169 | Chapparal Operating Co. only | Meeker (Conglomerate 4000) | Parker | 1 | 75 | 185K | Jan 1993 – Apr 2026 |
| Bowen, A. J. G-8-120293 | Subsurface Production, Inc. only | Thrifty, S. (Chappel Reef) | Brown | 1 | 72 | 4.19K | Jan 1993 – Jan 2021 |
| Brents, Walker G-8-82673 | Chapparal Operating Co. only | Meeker (Conglomerate 4000) | Parker | 1 | 54 | 223K | Jan 1993 – Apr 2026 |
| Ferrell, L.T. G-8-119863 | Chapparal Operating Co. only | L & H (Strawn) | Eastland | 1 | 45 | 75.8K | Jan 1993 – Apr 2026 |
| Puryear-Lesikar Unit G-8-106135 | Chapparal Operating Co. only | Toto (Caddo Conglomerate) | Parker | 1 | 39 | 155K | Jan 1993 – Jan 2012 |
| Callaway, Gerald L. G-8-109090 | Texas Sands Resources, LLC only | Thrifty, S. (Chappel Reef) | Brown | 1 | 36 | 60K | Jan 1993 – Mar 2010 |
| Chapparal G-10-252929 | Endeavor Energy Resources L.P. only | Toro (Devonian) | Reeves | 1 | 35 | 313K | Jul 2008 – Sep 2016 |
| Sage-Keller "B" G-8-131364 | Friendly Energy Services, Inc. only | Thrifty, S. (Chappel Reef) | Brown | 1 | 35 | 41K | Jan 1993 – Feb 2011 |
| Ramage, T. C. G-8-138793 | Friendly Energy Services, Inc. only | Thrifty, S. (Chappel Reef) | Brown | 1 | 34 | 1.45K | Jun 2005 – May 2006 |
| Dalworth G-8-123668 | Chapparal Operating Co. only | Toto (Caddo Conglomerate) | Parker | 1 | 28 | 133K | Jan 1993 – Nov 2025 |
| Chapparal G-10-207109 | Endeavor Energy Resources L.P. only | Toro (Fusselman) | Reeves | 1 | 23 | 20K | Oct 2004 – Oct 2007 |
| Chappel Woods Unit G-3-258284 | Magnolia Oil & Gas Operating LLC only | Giddings (Austin Chalk-3) | Montgomery | 1 | 16 | 1.15M | May 2010 – Apr 2026 |
| Hutchins, D.R. & W.A. G-8-106415 | Jurassic Energy Corporation only | Thrifty, S. (Chappel Reef) | Brown | 1 | 14 | 4.17K | Jan 1993 – Mar 1994 |
| Lesikar, Wm. G-8-291411 | Chapparal Operating Co. only | Toto (Caddo Conglomerate) | Parker | 1 | 10 | 19.5K | Aug 2021 – Apr 2026 |
| Chapparosa Ranch G-1-56205 | Conway Energy Oper Services Inc. only | Bandera Tank, NW. (San Miguel) | Zavala | 1 | 9 | 2.95M | Jan 1993 – Aug 2024 |
| Sage-Sullivan G-8-126087 | Jurassic Operating Company, Inc. only | Thrifty, S. (Chappel Reef) | Brown | 1 | 7 | 1.77K | Jan 1993 – May 1996 |
| Stavinoha, Gilbert et Al G-8-112085 | Jurassic Operating Company, Inc. only | Thrifty, S. (Chappel Reef) | Brown | 1 | 2 | 4.77K | Jan 1993 – Apr 1999 |
| Sage-Breedlove G-8-131193 | Friendly Energy Services, Inc. only | Thrifty, S. (Chappel Reef) | Brown | 1 | 0 | 16.9K | Jan 1993 – Oct 2009 |
| HTR-Reeves G-8-131264 | Jurassic Prod. & Expl. Co., Inc. only | Thrifty, S. (Chappel Reef) | Brown | 1 | 0 | 16.4K | Jan 1993 – Apr 1999 |
| HTR-Wright G-8-132999 | Etaba Operating Company only | Thrifty, S. (Chappel Reef) | Brown | 1 | 0 | 0 | — |
| Atr-Reeves G-8-134925 | Jurassic Operating Company, Inc. only | Thrifty, S. (Chappel Reef) | Brown | 1 | 0 | 3.29K | Jan 1993 – Apr 1999 |
| Sage-Keller "C" G-8-137497 | Etaba Operating Company only | Thrifty, S. (Chappel Reef) | Brown | 1 | 0 | 0 | — |
| DXR-Reeves G-8-138905 | Etaba Operating Company only | Thrifty, S. (Chappel Reef) | Brown | 1 | 0 | 0 | — |
| Rodriguez G-8-152773 | Basin Operating Inc. only | Smalley (Miss Chappel) | Shackelford | 1 | 0 | 353K | Nov 1994 – Apr 2026 |
| Gobbler Hollow G-8-206658 | Friendly Energy Services, Inc. only | Thrifty, S. (Chappel Reef) | Brown | 1 | 0 | 2.02K | Jan 2005 – Nov 2011 |
| Sage-Ott "A" G-8-227674 | D.J. & T. Energy only | Thrifty, S. (Chappel Reef) | Brown | 1 | 0 | 15.3K | Apr 2007 – Oct 2016 |
| Chapparal G-10-93799 | Endeavor Energy Resources L.P. only | Rojo Caballos, West(ellenburger) | Reeves | 1 | 0 | 705 | Jan 1993 – Aug 1995 |
| Green G-13-74371 | Ayres, C. D. only | Bartons Chappel E. (Congl. 4850) | Jack | 1 | 0 | 93.4K | Jan 1993 – Dec 2016 |
| Green G-13-96818 | Ayres, C. D. only | Bartons Chappel E. (Congl. 4850) | Jack | 1 | 0 | 84.8K | Jan 1993 – Dec 2016 |
| Chapp G-14-24785 | Borger Resources 2 LLC only | Panhandle, West | Hutchinson | 1 | 0 | 56.7K | Jan 1993 – Mar 2026 |
| Norton,r.w.,jr.-Chapparosa Ranch G-1-55691 | Conway Energy Oper Services Inc. only | Bandera Tank, NW. (San Miguel) | Zavala | 1 | 0 | 148K | May 1993 – Jul 2024 |