| Alexander O-6-4966 | Wenexco, Inc. only | Mt. Vernon (Pettit) | Franklin | 1 | 28.8K | 21 | by Jan 1993 – Sep 2016 |
| Alex Sears '159' O-8-31337 | Cedar Oil Company only | Taylor County Regular | Taylor | 1 | 28.8K | 0 | Nov 2013 – Jun 2022 |
| Tuttle O-11-65294 | Exco Resources, Inc. only | Alexander (Wolfcamp) | Terry | 1 | 28.4K | 21 | by Jan 1993 – Mar 2001 |
| Nevada - Alexander Oil Unit O-6-13836 | TGNR East Texas LLC only | Carthage (Chadwick 2) | Panola | 2 | 27.4K | 116K | May 1998 – Feb 2005 |
| Alexander, Charles G-4-165681 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 25.7K | 7.65M | Nov 1997 – Aug 2026 |
| Alexander Trust "7" O-8-16478 | Clear Fork, Incorporated only | Alexander (Canyon Lower) | Stonewall | 2 | 25.6K | 21 | by Jan 1993 – Jul 2001 |
| Alexander, Charles G-4-167535 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 25.5K | 5.15M | Mar 1998 – Aug 2026 |
| Alexander, S. O-9-16203 | Atlas Operating LLC only | Cree-Sykes (Crosscut) | Runnels | 1 | 24.7K | 30.6K | Mar 2007 – Aug 2026 |
| Alexander Unit 1 O-6-14142 | Anadarko E&P Onshore LLC only | Carthage (Travis Peak) | Panola | 1 | 24.4K | 35.3K | Dec 2001 – Aug 2008 |
| Alexander /160 Ac./ O-4-2039 | Nylo Oil & Gas LLC only | Palo Blanco | Brooks | 4 | 24.3K | 55 | by Jan 1993 – May 2025 |
| Kerbey O-2-7147 | Halex Oil Corporation only | Rudman, West (Slick) | Bee | 1 | 24.2K | 115K | by Jan 1993 – Sep 2020 |
| Alexander -3- O-13-28635 | Gruy Petroleum Management Co. only | Fargo, W. (Strawn Conglomerate) | Wilbarger | 1 | 24K | 24 | Aug 1993 – Apr 1997 |
| Alexander, Charles G-4-169465 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 23.9K | 3.3M | May 1998 – Sep 2016 |
| McFall Kerbey O-2-8187 | Halex Oil Corporation only | Rudman, West (Slick) | Bee | 1 | 23.8K | 93.6K | May 1996 – Oct 2009 |
| Alexandra 47 G-14-268630 | United Oil & Shale LLC only | Lister (Granite Wash) | Wheeler | 1 | 23.3K | 444K | Jan 2013 – Jan 2026 |
| Mitchell, Alex 1 G-9-188488 | White Rock Oil & Gas, LLC only | Deer Canyon (Strawn) | Terrell | 1 | 22.8K | 2.72M | Jun 2000 – Aug 2026 |
| Warmack O-6-11879 | Winchester Production Company only | Waskom (Alexander Sand) | Harrison | 1 | 22.6K | 37.6K | by Jan 1993 – May 2003 |
| McFall-Kerby O-2-8981 | Halex Oil Corporation only | Rudman, W. (Queen City) | Bee | 1 | 22K | 10.7K | May 2005 – Sep 2018 |
| Alexander Estate O-13-19845 | Rivercity Operating, Inc. only | Dakin (Congl) | Young | 1 | 21.4K | 184K | Dec 1999 – Sep 2020 |
| Redwine-Alexander G-6-271213 | Sabine Energy Inc. only | Henderson, E. (Cotton Valley) | Rusk | 1 | 21.3K | 1.37M | Sep 2013 – Mar 2020 |
| Alexander, C. O-1-8213 | Foyoro Energy, LLC only | Bateman (Austin Chalk) | Bastrop | 8 | 21.1K | 91 | by Jan 1993 – Apr 2013 |
| Alexander, Charles G-4-165680 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 20.8K | 4.36M | Nov 1997 – Aug 2026 |
| McFall Kerbey O-2-9366 | Halex Oil Corporation only | Rudman, W. (Queen City) | Bee | 1 | 20.2K | 2.72K | Nov 2009 – Oct 2019 |
| Alexander, K. J. O-3-6005 | Votaw Production Company LLC only | Liberty, South | Liberty | 2 | 20K | 27 | by Jan 1993 – Jul 2019 |
| Alexander G-14-269100 | Presidio Petroleum LLC only | Buffalo Wallow (Granite Wash) | Hemphill | 1 | 19.9K | 830K | Sep 2012 – Aug 2026 |
| Alexander O-13-27623 | Perry Operating Inc. only | Graham, North (Strawn 3450) | Young | 1 | 19.4K | 3.36K | by Jan 1993 – Aug 2026 |
| Alexander, Cuba O-6-14492 | Largo Oil Company only | Minden (Travis Peak Cons.) | Rusk | 1 | 19.3K | 103K | Apr 2006 – Jan 2026 |
| Alexander "A" O-9-12059 | Pioneer Natural Res. USA, Inc. only | Spraberry (Trend Area) | Reagan | 1 | 19.2K | 110K | by Jan 1993 – Jul 2020 |
| Mitchell, Alex 1 G-9-172854 | White Rock Oil & Gas, LLC only | Pakenham (Thrusted) | Terrell | 1 | 18.8K | 512K | Feb 1999 – Aug 2026 |
| Alexander Trust O-13-32982 | Legacy Exploration, LLC I only | Dillard, SE. (Ellenburger) | Jack | 1 | 18.8K | 20.3K | Aug 2014 – Jun 2022 |
| Mitchell, Alex 2 G-9-161218 | White Rock Oil & Gas, LLC only | Deer Canyon (Strawn) | Terrell | 1 | 18.7K | 1.37M | Nov 1996 – Dec 2008 |
| Mitchell, Alex 1 G-9-156695 | Conocophillips Company only | Pakenham (Upper Strawn) | Terrell | 1 | 18.5K | 220K | Jul 1995 – Feb 2006 |
| Alexander G-6-92524 | Fortune Resources LLC only | Percy Wheeler (Travis Peak) | Cherokee | 1 | 18.4K | 1.91M | by Jan 1993 – Jul 2026 |
| Alex Mitchell 1 G-9-237231 | White Rock Oil & Gas, LLC only | Deer Canyon (Strawn) | Terrell | 1 | 18.2K | 2.97M | Nov 2007 – Aug 2026 |
| Alexander O-8-31841 | 5L Properties, Inc. only | D & L (Bluff Creek Sand) | Jones | 2 | 18.1K | 0 | Jun 2015 – Aug 2026 |
| Cargill, G. E. O-6-12114 | Devon Energy Production Co, L.P. only | Waskom (Alexander Sand) | Harrison | 1 | 17.9K | 225K | by Jan 1993 – Mar 2003 |
| Alexander "43" O-9-14188 | Diamondback E&P LLC only | Spraberry (Trend Area) | Reagan | 1 | 17.6K | 47.3K | Nov 1995 – Jul 2024 |
| Alexander, Cuba O-6-3606 | Largo Oil Company only | Pone (Travis Peak) | Rusk | 1 | 17.4K | 66.3K | by Jan 1993 – Mar 2006 |
| Alexander 48 G-14-269850 | Presidio Petroleum LLC only | Buffalo Wallow (Granite Wash) | Hemphill | 1 | 17.2K | 1.15M | Jul 2013 – Aug 2026 |
| Pember, B. O-11-65628 | Alexander Resources, Inc. only | Stinnett, SE. (Clear Fork) | Lubbock | 1 | 17.1K | 92 | by Jan 1993 – Jul 2003 |
| Alexander Robbie O-9-6383 | Hibernia Resources III, LLC only | Spraberry (Trend Area) | Reagan | 2 | 17K | 77.8K | by Jan 1993 – Feb 2016 |
| Alexander O-6-15165 | Fair Oil, Ltd. only | Mt. Vernon (Pettit) | Franklin | 1 | 17K | 0 | Mar 2013 – Dec 2025 |
| G. Alexander O-6-15177 | Jandar Exploration, L. C. only | Overton, S. (Travis Peak) | Rusk | 1 | 16.8K | 0 | Aug 2012 – Aug 2026 |
| Alexander-Mandel 1762 G-1-277011 | Lewis Petro Properties, Inc. only | Tri Bar (Olmos) | La Salle | 1 | 16.5K | 275K | Oct 2014 – Aug 2026 |
| Alexander 33 G-14-271313 | Presidio Petroleum LLC only | Buffalo Wallow (Granite Wash) | Hemphill | 1 | 16.3K | 543K | Apr 2013 – Feb 2023 |
| Alexander, Charles G-4-165974 | Columbus Energy, LLC only | Bashara-Hereford (7300) | Webb | 1 | 16.3K | 6.32M | Dec 1997 – Aug 2026 |
| Menzies, Alex O-9-12712 | Flag Energy, LLC only | Wilhelm Lane (Strawn 3300) | Menard | 2 | 15.9K | 4.91K | by Jan 1993 – Jan 2002 |
| Alexander O-8-23960 | Lowrance Inc. only | Cisco (Congl. 3600) | Eastland | 1 | 15.7K | 75.7K | by Jan 1993 – Jun 2026 |
| Alexander, F. W. -A- O-8-3278 | JNS Production, LLC only | Shackelford County Regular | Shackelford | 3 | 15.6K | 19 | by Jan 1993 – Jul 2026 |
| Beulah G-3-236946 | Halex Oil Corporation only | Potthast (Middle Tex Miss) | Matagorda | 1 | 15.5K | 129K | May 2008 – Nov 2011 |