| Alexander, W. R. G-13-264416 | BKV Barnett, LLC only | Newark, East (Barnett Shale) | Wise | 1 | 7.75K | 2.52M | Feb 2011 – Aug 2026 |
| Alexis O-1-14626 | Holley Oil Company, LLC only | Pearsall (Austin Chalk) | Frio | 1 | 7.62K | 0 | Sep 2008 – Aug 2013 |
| Alexander, Cuba Gas Unit G-6-217113 | Largo Oil Company only | Minden (Cotton Valley Cons.) | Rusk | 1 | 7.48K | 840K | Dec 2005 – Aug 2026 |
| Alexander "A" G-4-244496 | Magnum Producing, LP only | Exsun (Lobo Cons.) | Zapata | 1 | 7.43K | 3.63M | Jan 2009 – Jul 2026 |
| Alexander, Charles G-4-194072 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 7.41K | 4.05M | Dec 2002 – Aug 2026 |
| Alexander, C. D. -C- O-14-3172 | Hamman Oil & Refining Company only | Clementine (Morrow, Upper) | Hansford | 2 | 7.41K | 54.7K | by Jan 1993 – Apr 2001 |
| Alexander, Mrs. M. Estate O-13-9744 | Sojourner Drilling Corporation only | Knox City, NW. (Tannehill) | Knox | 3 | 7.29K | 140 | by Jan 1993 – Jul 2016 |
| Alexander 400 Acre O-4-13466 | Nylo Oil & Gas LLC only | Palo Blanco(fb-S, Frio 4000) | Brooks | 1 | 7.19K | 0 | Jun 2007 – Feb 2025 |
| McFall-Kerby O-2-6894 | Halex Oil Corporation only | Rudman, West (Mackhank) | Bee | 1 | 7.13K | 34.6K | by Jan 1993 – Apr 2001 |
| Alexander, Charles G-4-170619 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 6.93K | 4.25M | Aug 1998 – Aug 2026 |
| Martinez-Alexander Gas Unit G-4-145683 | Hilcorp Energy Company only | Bashara-Hereford (7300) | Zapata | 1 | 6.89K | 5.21M | Apr 1993 – Aug 2026 |
| Wilson O-8-24388 | Alexander Resources, Inc. only | Watts, N. (Gardner Sd.) | Nolan | 1 | 6.85K | 226K | by Jan 1993 – Apr 2003 |
| Alexander, George G-3-148822 | Magnum Producing, LP only | Nelsonville ( Wilcox 10,400) | Austin | 1 | 6.82K | 133K | Aug 1993 – Jan 2009 |
| Alexander, Charles G-4-206612 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 6.69K | 3.84M | Dec 2004 – Aug 2026 |
| King/Elliott O-8-27769 | DP2, LLC only | Alexandria (Gardner SD A) | Shackelford | 1 | 6.69K | 109K | Nov 1995 – Mar 2017 |
| Alexander, Jacob GU 1 G-6-241873 | Texian Operating Company, LLC only | Trawick (Pettit-TP Cons.) | Nacogdoches | 1 | 6.56K | 328K | Jul 2008 – Aug 2026 |
| Alexander G-14-204450 | Chesapeake Operating, Inc. only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 6.47K | 286K | Jun 2004 – May 2009 |
| Alexander, Charles G-4-194387 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 6.27K | 1.62M | Feb 2003 – Aug 2026 |
| Halfmann, Alex "C" O-9-11788 | Lavanco Energy, Inc. only | Halfman (Strawn) | Tom Green | 1 | 6.23K | 6.45K | by Jan 1993 – Jun 1997 |
| Alexander, Charles G-4-166204 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 6.22K | 2.6M | Mar 1997 – Mar 2015 |
| Alexander, Charles G-4-192830 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 6.21K | 3.98M | Oct 2002 – Aug 2026 |
| Alexander 23 G-14-241684 | Unbridled Resources, LLC only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 6.17K | 205K | Jun 2008 – Jan 2026 |
| Alexander, Cuba Gas Unit G-6-218728 | Largo Oil Company only | Minden (Cotton Valley Cons.) | Rusk | 1 | 6.13K | 827K | Feb 2006 – Aug 2026 |
| Alexander, W. T. O-13-19154 | Devon Energy Production Co, L.P. only | Alvord (Atoka Conglomerate) | Wise | 1 | 6.1K | 195K | Dec 1996 – Aug 2006 |
| Charles Alexander D G-4-170403 | Columbus Energy, LLC only | Hubberd (Lobo) | Webb | 1 | 6.09K | 2.67M | Sep 1998 – Aug 2026 |
| Alexander G-14-209477 | Chesapeake Operating, L.L.C. only | Stiles Ranch (Granite Wash Cons) | Wheeler | 1 | 5.87K | 240K | Feb 2005 – Jul 2014 |
| Alexander 33 G-14-244162 | Presidio Petroleum LLC only | Buffalo Wallow (Granite Wash) | Hemphill | 1 | 5.86K | 837K | Sep 2008 – Aug 2026 |
| Killam-Hurd-Amoco Alexander "B" G-4-124677 | Enron Oil & Gas Company only | Del Mar (Lobo Cons.) | Webb | 1 | 5.85K | 448K | by Jan 1993 – Apr 1997 |
| State Tract 721-L G-4-195600 | Hunt Petroleum (Aec), Inc. only | Alexandre (Cib Haz 3) | Matgrda IS-LB | 1 | 5.76K | 594K | Nov 2003 – Nov 2004 |
| Alexander, J. W. G-6-192601 | Rockcliff Energy Operating LLC only | Carthage, North (Cotton Valley) | Panola | 1 | 5.72K | 626K | Dec 2002 – Mar 2019 |
| Alexander Omega Trust Lease O-13-33863 | Legacy Exploration, LLC I only | Dillard, SW. (Marble Falls) | Clay | 2 | 5.71K | 39.7K | Jan 2019 – Jul 2022 |
| Alexander -A- O-14-4345 | Apache Corporation only | Clementine (Marmaton) | Hansford | 1 | 5.64K | 40.5K | Feb 1993 – Aug 1999 |
| Alexander, Toni G-5-203218 | Diversified Production LLC only | Personville, N (CV Consolidated) | Limestone | 1 | 5.53K | 2.16M | Apr 2004 – Aug 2026 |
| Alexander, J. H. G-6-196994 | Trivium Operating, LLC only | Willow Springs (Cotton Valley) | Gregg | 1 | 5.47K | 1.09M | Jul 2003 – Oct 2019 |
| Jobe O-6-12658 | Winchester Production Company only | Waskom (Alexander Sand) | Harrison | 1 | 5.33K | 102K | by Jan 1993 – Oct 2000 |
| Alexander, Charles G-4-164657 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 5.3K | 1.29M | Aug 1997 – Aug 2026 |
| Alexander, Cuba Gas Unit G-6-221901 | Largo Oil Company only | Minden (Cotton Valley Cons.) | Rusk | 1 | 5.28K | 989K | Jul 2006 – Aug 2026 |
| Alexander-Cobb O-8-10816 | Williams Deville Operating, Inc. only | Haskell County Regular | Haskell | 1 | 5.26K | 14 | by Jan 1993 – May 2017 |
| Alexander G-2-213245 | C & E Operating, Inc. only | Lobue (Discorbis D) | Calhoun | 1 | 5.05K | 284K | Jun 2005 – Jul 2006 |
| Alexander "A" O-11-60477 | Patton Exploration, Inc. only | Reutinger (Tannehill, Upper) | King | 2 | 5.04K | 36 | by Jan 1993 – May 2008 |
| Born, Alex "F" G-14-184710 | Latigo Petroleum, LLC only | Bradford (Tonkawa) | Lipscomb | 1 | 5.02K | 1.87M | Jun 2001 – Aug 2026 |
| Alexander G-14-253353 | Presidio Petroleum LLC only | Buffalo Wallow (Granite Wash) | Hemphill | 1 | 4.94K | 505K | Sep 2009 – Aug 2026 |
| Alexander, Geneva Furrh et Al G-6-177287 | Diversified Production LLC only | Carthage (Cotton Valley) | Panola | 1 | 4.93K | 399K | Dec 1999 – Jul 2017 |
| Ramey, Alex G-4-147013 | Remora Operating, LLC only | Cano-Mexico (5100) | Hidalgo | 1 | 4.83K | 349K | Sep 1993 – Aug 2013 |
| Alexander, O.W. G-6-135523 | TGNR Panola LLC only | Carthage (Travis Peak-Deadwood) | Panola | 1 | 4.81K | 558K | by Jan 1993 – Aug 2026 |
| Alexander, Geneva Furrh et Al G-6-136289 | Devon Louisiana Corporation only | Gales (6500 Travis Peak) | Panola | 1 | 4.8K | 1.3M | by Jan 1993 – Jun 2005 |
| Carter, Alex G-6-159760 | Diversified Production LLC only | Glenwood (Cotton Valley) | Gregg | 1 | 4.79K | 1.14M | Jul 1996 – Aug 2026 |
| Alexander G-6-214407 | Global Exploration, LLC only | Percy Wheeler (Travis Peak) | Cherokee | 1 | 4.74K | 130K | Jul 2005 – Feb 2026 |
| Alexander G-4-225320 | Hilcorp Energy Company only | Lopeno ( Reklaw B) | Zapata | 1 | 4.73K | 1.21M | Dec 2006 – Jun 2016 |
| Born, Alex et Al G-14-156629 | Complete Oil & Gas Services, LLC only | Lipscomb (Cleveland) | Lipscomb | 1 | 4.6K | 1.39M | Oct 1995 – Sep 2021 |