| Cecil O-10-43991 | Apache Corporation only | Spraberry (Trend Area) | Glasscock | 10 | 264K | 741K | Jun 2013 – Apr 2026 |
| Smith, Cecil L. O-8-27816 | Clear Fork, Incorporated only | Lazarus (Strawn) | Nolan | 3 | 256K | 968K | Mar 1996 – Apr 2026 |
| Carroll, Bernal O-2-6909 | Bay Rock Operating Company only | Cecily (Yegua 4950) | De Witt | 1 | 197K | 38 | Jan 1993 – Jun 2020 |
| Cecil, M. R. G-3-197306 | Samson Lone Star, LLC only | Sour Lake, E. (Kirby FB-A) | Jefferson | 1 | 126K | 4.73M | Aug 2003 – Oct 2010 |
| Cecil O-11-63289 | SSC, Inc. only | Lee Harrison | Lubbock | 2 | 107K | 134 | Jan 1993 – Apr 2026 |
| Mankins, Cecil O-13-219 | Enr Operating, LLC only | Archer County Regular | Archer | 23 | 78.7K | 22 | Jan 1993 – Mar 2026 |
| Boyt, Cecil K. Estate O-3-11067 | McGowan Working Partners, Inc. only | Cottonwood, S. (8300) | Liberty | 3 | 77.3K | 30.7K | Jan 1993 – Apr 2004 |
| Brown, Cecil O-3-5591 | Exxon Corp. only | Hastings, East | Brazoria | 10 | 67.4K | 248K | Jan 1993 – May 1998 |
| Miller, Conrad & Cecil O-8-13086 | Ronning Gas and Oil LLC only | Eastland County Regular | Eastland | 6 | 60K | 7.85K | Jan 1993 – Apr 2026 |
| Cecil L Smith (A) O-8-31702 | Clear Fork, Incorporated only | White Hat, SE. (Cisco) | Nolan | 3 | 58.5K | 61.8K | Jan 2013 – Apr 2026 |
| Riffe O-14-6491 | Burk Royalty Co., Ltd. only | Cecilia (Marmaton) | Sherman | 2 | 49.4K | 139K | Jan 1993 – Apr 2026 |
| Cecil Unit G-13-278797 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 48.7K | 522K | Sep 2013 – Apr 2026 |
| Sears, Cecil O-11-60540 | Smith Vacuum Service only | Log-Pat (4900) | Scurry | 1 | 47K | 446 | Jan 1993 – Mar 2026 |
| Columbus Townsite Gas Unit G-3-226437 | Hurd Enterprises, Ltd. only | Cecil Noble (Wilcox 10,300) | Colorado | 1 | 44.9K | 1.12M | Nov 2006 – Sep 2014 |
| Cecil, M. R. et al Gas Unit G-3-123336 | Acock/Anaqua Operating Co., LP only | Sour Lake, E. (Kirby FB-A) | Hardin | 1 | 44.1K | 833K | Jan 1993 – Aug 2002 |
| Columbus Townsite GU G-3-280210 | Hurd Enterprises, Ltd. only | Cecil Noble (Wilcox 10,120) | Colorado | 1 | 37.5K | 1.48M | Jan 2015 – Apr 2025 |
| Cecil 6 O-10-41752 | New Height Energy, LLC only | Spraberry (Trend Area) | Howard | 1 | 35.5K | 74.2K | Jul 2011 – Mar 2026 |
| Cecilia A O-14-7188 | Burk Royalty Co., Ltd. only | Cecilia (Marmaton) | Sherman | 1 | 32.4K | 295K | Jan 1997 – Apr 2026 |
| Cecil O-10-45307 | Apache Corporation only | Garden City, NW (Strawn) | Glasscock | 2 | 28.5K | 96.3K | Feb 2014 – Apr 2026 |
| Cecil Martin Gas Unit G-6-283801 | Jamex, Inc. only | Overton (Cotton Valley Sand) | Cherokee | 1 | 27.6K | 3.29M | Aug 2017 – Apr 2026 |
| Cook Family Trust G-3-254627 | Vantage Operating, LLC only | Cecil Noble (Wilcox 9325) | Colorado | 1 | 26.4K | 1.15M | Dec 2009 – Mar 2023 |
| Smith, Cecil L. O-8-16321 | Clear Fork, Incorporated only | White Hat, SE. (Cisco) | Nolan | 2 | 25.4K | 55.5K | Jan 1993 – Nov 2014 |
| Tilton, F. O-5-1437 | Miller, Cecil G. Estate Of only | Corsicana (Shallow) | Navarro | 10 | 24.1K | 253 | Jan 1993 – Apr 2026 |
| Cecil, Mary O-6-5330 | Arcadia Operating, LLC only | Talco | Titus | 1 | 22.4K | 24 | Jan 1993 – Apr 2023 |
| Beaird, Cecil O-5-2005 | KO Operating LLC only | Corsicana (Shallow) | Navarro | 8 | 22K | 19 | Jan 1993 – Mar 2026 |
| Cecil Mansfield O-10-44743 | Crescent Energy Operating, LLC only | Vealmoor | Howard | 1 | 21K | 49.4K | Dec 2013 – Sep 2025 |
| Miller, Conrad & Cecil O-8-14506 | Ronning Gas and Oil LLC only | AB (Ranger) | Eastland | 2 | 16.2K | 7.79K | Jan 1993 – Apr 2026 |
| Cook Family Trust G-3-192481 | Alamo Operating Company, L. C. only | Cecil Noble (Wilcox 10,300) | Colorado | 1 | 15.4K | 430K | Nov 2001 – Oct 2008 |
| Garcia Yturria O-4-13873 | Rincon Petroleum Corporation only | Cecil | Hidalgo | 1 | 14.9K | 9.71K | Feb 2014 – Nov 2015 |
| Joann G-3-269159 | Akg Operating Company only | Cecil Noble (Wilcox 10,120) | Colorado | 1 | 13.4K | 38.1K | Jan 2012 – Jul 2013 |
| Cecil L Smith (A) O-8-30977 | Clear Fork, Incorporated only | White Hat, SE. (Cisco) | Nolan | 3 | 13.3K | 19.6K | Nov 2011 – Dec 2012 |
| Yandell, Cecil O-2-7429 | Laguna Oil & Gas Corp. only | Poehler (Yegua -A-) | Goliad | 1 | 12.8K | 624 | Jan 1993 – Nov 2012 |
| Mansfield, Cecil O-10-7093 | Platinum Exploration Inc. only | Vealmoor | Howard | 2 | 12.5K | 19.2K | Jan 1993 – May 1998 |
| Wegenhoft, John and Ford G-3-73300 | Magnum Producing & Operating Co. only | Cecil Noble (Wilcox 10,120) | Colorado | 1 | 12.5K | 438K | Jan 1993 – Apr 1997 |
| Cecil O-13-31900 | Hannis Operating, LLC only | Hull-Silk-Sikes | Archer | 3 | 11.9K | 0 | Sep 2011 – Jun 2025 |
| Brown, Cecil -B- O-3-5592 | Exxon Corp. only | Hastings, East | Brazoria | 5 | 11.5K | 65.9K | Jan 1993 – Apr 1997 |
| Cecil, M. R. G-3-211571 | Samson Lone Star, LLC only | Sour Lake, E. (Yegua-DF-9) | Jefferson | 1 | 11.1K | 468K | May 2005 – Aug 2007 |
| Bynum, Cecil M. et Al O-1-8518 | Ampak Oil Company only | Cook (Buda) | Atascosa | 1 | 9.83K | 359 | Jan 1993 – Mar 1998 |
| Balkum, L. T. O-9-11999 | Triangle P Development Corp. only | Cecil T. (Palo Pinto) | Runnels | 1 | 9.25K | 120 | Jan 1993 – Jan 2003 |
| Stevens, Cecil O-8-26060 | El Reno Energy, LLC only | Noodle, NW. (Canyon Sd. 4000) | Jones | 1 | 8.59K | 543 | Jan 1993 – Oct 2019 |
| 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 |
| Sparks, Cecil R. et UX O-1-10816 | Rainer Energy, Inc. only | Somerset | Atascosa | 8 | 6.94K | 113 | Jan 1993 – Oct 2002 |
| Horne, Cecil 'A' O-8-19744 | J.W.S. only | Horne, East (Morris) | Coleman | 4 | 6.79K | 40.1K | Jan 1993 – Aug 2005 |
| 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 |
| Columbus Townsite Unit G-3-144825 | Magnum Producing & Operating Co. only | Cecil Noble (Schiller) | Colorado | 1 | 6.07K | 243K | Mar 1993 – Apr 2000 |
| Cook Family Trust O-3-25399 | Alamo Operating Company, L. C. only | Cecil Noble (9350) | Colorado | 1 | 5.19K | 35.6K | Jun 2009 – Nov 2009 |
| Cecilia -A- G-14-124233 | Phillips Petroleum Company only | Cecilia (Marmaton) | Sherman | 1 | 4.54K | 55.8K | Jan 1993 – Dec 1996 |
| Cecil Unit O-13-33473 | EOG Resources, Inc. only | Newark, East (Barnett Shale) | Montague | 1 | 4.3K | 63.7K | Oct 2013 – Apr 2026 |
| Cecil, M. R. G-3-202201 | Samson Lone Star LP only | Sour Lake, East (Yegua #7-A) | Jefferson | 1 | 4.16K | 788K | Mar 2004 – Jan 2005 |