| Ferguson 42 O-14-7688 | EOG Resources, Inc. only | Allen-Parker (Marmaton) | Ochiltree | 2 | 27.3K | 35K | Aug 2006 – Nov 2012 |
| Ferguson Brothers -34- O-10-31869 | Chevron Midcontinent, L.P. only | Sugg Ranch (Canyon Dist 08) | Sterling | 16 | 27.1K | 1.41M | by Jan 1993 – Dec 2005 |
| Trust, C. E. O-13-29456 | Ferguson, S. M. Jr., Inc. only | Searcys (Miss) | Hardeman | 1 | 26.1K | 0 | Feb 1998 – Sep 2006 |
| Ferguson Prison Unit G-3-272058 | Sem Operating Company LLC only | Fort Trinidad (Glen Rose, Upper) | Madison | 1 | 25.4K | 300K | Sep 2012 – Aug 2014 |
| Ferguson 3 O-8-29996 | Double M Petroproperties, Inc. only | Pardue (Canyon) | Fisher | 1 | 25.3K | 1.34K | Sep 2007 – Aug 2026 |
| Ferguson, J. B. O-5-2462 | Southwest Operating, Inc.-Tyler only | Trinidad, S. (Rodessa) | Henderson | 1 | 25.1K | 11.5K | by Jan 1993 – Feb 2022 |
| Ferguson Prison Unit G-3-277051 | | Fort Trinidad (Glen Rose, Upper) | Madison | 1 | 24.8K | 497K | Sep 2011 – Aug 2014 |
| Ferguson, W. P., -A- O-13-12847 | Finnell Operating, LLC only | Archer County Regular | Archer | 2 | 24.6K | 2.85K | by Jan 1993 – Aug 2026 |
| Ferguson Oil Unit O-3-17062 | McGowan Working Partners, Inc. only | Pierce Ranch (4900) | Wharton | 1 | 24.3K | 28.7K | by Jan 1993 – Aug 2000 |
| Ferguson Heirs -B- O-13-18314 | Enr Operating, LLC only | Holliday (4350) | Archer | 1 | 24.1K | 22 | by Jan 1993 – Aug 2026 |
| Ferguson Bros. -B- O-13-14058 | Seneca Exploration, LLC only | Archer County Regular | Archer | 7 | 23.8K | 21 | by Jan 1993 – Jan 2020 |
| Ferguson C O-10-33281 | Stanolind Production LLC only | Sugg Ranch (Canyon Dist 08) | Sterling | 2 | 23.6K | 363K | by Jan 1993 – Sep 2019 |
| Ferguson, D. G-4-192873 | Merit Energy Company only | Alvarado (Vicksburg) | Starr | 1 | 22.5K | 1.87M | Jan 2003 – Aug 2026 |
| Ferguson, J. B. O-3-9749 | Ermis Vacuum Service, LLC only | Pickett Ridge, N. E. (Frio 4700) | Wharton | 1 | 21.4K | 2.51K | Jun 1993 – Sep 2023 |
| Ferguson A O-13-24808 | 2MC Consulting LLC only | Stewart (Marble Falls) | Young | 1 | 20.9K | 8.64K | by Jan 1993 – Aug 2026 |
| Ferguson -A- O-13-7589 | 2MC Consulting LLC only | Young County Regular | Young | 6 | 20.8K | 8.29K | by Jan 1993 – Aug 2026 |
| Ferguson 135 O-8-30947 | Scout Energy Management LLC only | Tompkins (Canyon Sd. 4900) | Stonewall | 1 | 18.3K | 6.67K | Mar 2012 – Aug 2026 |
| Belle Ferguson Gas Unit G-4-147404 | Totalfinaelf E&P USA Inc only | Belle Ferguson (Lo. Frio Cons.) | Hidalgo | 1 | 18.1K | 1.34M | Dec 1993 – May 2002 |
| Ferguson -B- O-13-17311 | Finnell Operating, LLC only | Archer County Regular | Archer | 10 | 17.7K | 38.9K | by Jan 1993 – Oct 2015 |
| Ferguson "AA" O-13-11083 | Apache Production Company only | Archer County Regular | Archer | 16 | 17K | 47 | by Jan 1993 – Sep 2019 |
| Belle Ferguson G.U. G-4-174688 | Merit Energy Company only | Belle Ferguson (Lo. Frio Cons.) | Hidalgo | 1 | 15.9K | 2.02M | Aug 1999 – Aug 2026 |
| McAllen Fieldwide Unit G-4-208836 | Merit Energy Company only | Belle Ferguson (Bond) | Hidalgo | 1 | 15.7K | 859K | Feb 2005 – Apr 2010 |
| Ferguson Gas Unit G-5-92883 | Diversified Production LLC only | Personville, N (CV Consolidated) | Limestone | 1 | 15.6K | 1.36M | by Jan 1993 – Aug 2026 |
| Ferguson, Belle Gas Unit G-4-137163 | Merit Energy Company only | Belle Ferguson (Lo. Frio Cons.) | Hidalgo | 1 | 14.9K | 1.49M | by Jan 1993 – Oct 2016 |
| Ferguson, Gary O-9-13838 | Dbo Oil Incorporated only | Lindemann (Jennings) | Runnels | 2 | 14.7K | 65.1K | Jul 1995 – Mar 2006 |
| Ferguson B O-10-37987 | Stanolind Production LLC only | Lower Half (Wolfcamp) | Sterling | 5 | 14.4K | 60.7K | Feb 2005 – Sep 2019 |
| Ferguson-McKnight O-1-14905 | Gulftex Energy, LLC only | Pearsall (Austin Chalk) | Dimmit | 2 | 12.6K | 4 | Dec 2007 – Nov 2023 |
| Ferguson, D. G-4-194168 | Merit Energy Company only | Alvarado (Vicksburg) | Starr | 1 | 12K | 1.01M | Mar 2003 – Aug 2026 |
| Ferguson Section 115 O-8-26814 | Young, Marshall R., Oil Co. only | Trojan (Upper Strawn) | Fisher | 1 | 11.3K | 6.27K | Feb 1993 – May 1995 |
| Ferguson Ranch O-3-27464 | Veracity Energy LLC only | Caney (Lewis Sand) | Matagorda | 1 | 11.3K | 10.2K | Sep 2018 – Oct 2018 |
| Ferguson O-10-27334 | Tamarack Petroleum Company, Inc. only | Spraberry (Trend Area) | Martin | 1 | 11.2K | 42.7K | by Jan 1993 – Mar 2003 |
| Ferguson Heirs -A- O-13-18344 | Enr Operating, LLC only | Holliday (4000) | Archer | 1 | 11K | 22 | by Jan 1993 – Aug 2026 |
| Chandler Unit O-13-24635 | Ferguson, S. M. Jr., Inc. only | Piarist, SW (Miss) | Hardeman | 1 | 10.6K | 78 | by Jan 1993 – Aug 1999 |
| Ferguson -A- O-13-16624 | Bluebonnet Land & Cattle Co. only | Butch (Congl. 4600) | Young | 1 | 10.1K | 12.6K | by Jan 1993 – Jul 2006 |
| Ferguson-Cummins Unit O-13-31179 | Trio Consulting & Management,llc only | Medicine Mounds, SE (Miss) | Hardeman | 1 | 9.37K | 0 | Oct 2008 – Sep 2011 |
| Ferguson Prison Unit 4 O-3-26092 | Trailblazer Energy Resources,llc only | Fort Trinidad, East (Buda) | Madison | 2 | 9.33K | 58.5K | Dec 2011 – Nov 2014 |
| Ferguson, Belle Gas Unit G-4-148701 | Merit Energy Company only | Belle Ferguson (Bond) | Hidalgo | 1 | 9.08K | 296K | Mar 1994 – Oct 1996 |
| Ferguson Unit O-6-13041 | Sonat Exploration Company -Tyler only | Brookeland (Austin Chalk, 8800) | Sabine | 1 | 8.56K | 8.7K | by Jan 1993 – Jun 1994 |
| Ferguson O-13-33694 | Abb Oil Co., Inc. only | Archer County Regular | Archer | 2 | 7.88K | 0 | May 2017 – Jan 2021 |
| Ferguson Estate O-13-33888 | Trio Consulting & Management,llc only | Piarist (Miss) | Hardeman | 1 | 7.85K | 0 | Jul 2019 – Jul 2023 |
| Ferguson 2 O-8-30082 | Double M Petroproperties, Inc. only | Pardue (Canyon) | Fisher | 1 | 7.44K | 0 | Mar 2008 – Aug 2026 |
| Ferguson D G-10-149364 | Burk Royalty Co., Ltd. only | Spraberry (Trend Area) | Sterling | 1 | 7.43K | 749K | Apr 1994 – Nov 2020 |
| Ferguson, W. P. O-13-16896 | Rutledge-Newsom only | K-M-A (Gunsight Lime) | Wichita | 3 | 7.32K | 21 | by Jan 1993 – Dec 2013 |
| Ferguson, Belle Gas Unit G-4-136573 | Merit Energy Company only | Belle Ferguson (Lo. Frio Cons.) | Hidalgo | 1 | 7.12K | 608K | by Jan 1993 – May 1999 |
| Ferguson Brothers O-10-52675 | P1 Energy, LLC only | Spraberry (Trend Area) | Sterling | 14 | 6.78K | 47.4K | Oct 2019 – Aug 2026 |
| Ferguson, D. G-4-197725 | Merit Energy Company only | Alvarado (Vicksburg) | Starr | 1 | 6.76K | 326K | Oct 2003 – Jul 2024 |
| Ferguson -X- O-13-20539 | Tember Oil Company only | Archer County Regular | Archer | 6 | 6.69K | 107 | by Jan 1993 – Aug 2012 |
| Ferguson G-13-199249 | Eagleridge Operating, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 6.66K | 854K | Mar 2004 – Jul 2026 |
| Ferguson D G-10-150227 | Burk Royalty Co., Ltd. only | Spraberry (Trend Area) | Sterling | 1 | 6.45K | 667K | Jul 1994 – Aug 2026 |
| Ferguson Prison Unit G-6-277818 | Trailblazer Energy Resources,llc only | Eastham State Farm (Glenrose) | Madison | 1 | 6.07K | 120K | Sep 2014 – Feb 2020 |