| Alexander 4-45 O-10-46408 | Diamondback E&P LLC only | Hoefs T-K (Wolfcamp) | Reeves | 2 | 758K | 4.88M | Nov 2014 – Jul 2026 |
| Alexander O-11-188 | Aviator Energy, LLC only | Alex | Terry | 26 | 701K | 280K | Jan 1993 – Jul 2026 |
| Alexander, Thos. P. Etal O-3-21769 | Hilcorp Energy Company only | Franks, NW. (8900) | Galveston | 2 | 698K | 340K | Jan 1993 – Sep 2025 |
| Alexander Unit O-1-17504 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | LA Salle | 2 | 533K | 994K | Mar 2014 – Jul 2026 |
| Alexander Bird 43-6 O-9-19884 | Diamondback E&P LLC only | Spraberry (Trend Area) | Reagan | 2 | 498K | 3.52M | Feb 2018 – Jul 2026 |
| Alexander, Birdie R. O-11-10175 | Unitex Oil & Gas, L.L.C. only | Dorward | Garza | 22 | 466K | 266K | Jan 1993 – Jul 2026 |
| Alexander, Geo. O-7-6910 | Basa Resources, Inc. only | East Texas | — | 5 | 448K | 124K | Jan 1993 – Jul 2026 |
| Alexander, H. C., Etal O-7-6793 | Basa Resources, Inc. only | East Texas | — | 9 | 368K | 163K | Jan 1993 – Jul 2026 |
| Alexander TCB Unit O-1-20548 | Trinity Operating (Usg), LLC only | Briscoe Ranch (Eagleford) | Frio | 2 | 347K | 920K | Jan 2022 – Jul 2026 |
| Alexander No. 2 Oil Unit O-3-25662 | Hilcorp Energy Company only | Maple Gap (EY1) | Orange | 1 | 324K | 547K | Aug 2010 – Jul 2026 |
| Alexander No. 3 Oil Unit O-3-26259 | Hilcorp Energy Company only | Maple Gap (EY1) | Orange | 1 | 320K | 493K | Oct 2012 – Jul 2026 |
| Alexander, George, Gdn. O-7-7368 | Elms Oil Company only | East Texas | — | 11 | 263K | 64.9K | Jan 1993 – Jul 2026 |
| Hudie Morgan-Alexander O-5-4407 | Valence Operating Company only | Como (Rodessa Hill, Lo.) | Wood | 1 | 219K | 1.08M | Sep 2019 – Jul 2026 |
| Thos. Alexander Unit O-3-22287 | Hilcorp Energy Company only | Franks, NW. (8900) | Galveston | 1 | 209K | 114K | Jan 1994 – Apr 2016 |
| Alexander /400 Ac./ O-4-2046 | Nylo Oil & Gas LLC only | Palo Blanco (FB-S) | Brooks | 4 | 182K | 55 | Jan 1993 – Jul 2026 |
| Alexander O-14-8667 | Amarillo Exploration, Inc. only | Clementine (St. Louis) | Hansford | 4 | 181K | 52.1K | Jun 2012 – Jul 2026 |
| Alexander Heirs O-8-28483 | Katsco Energy, Inc. only | Lake Trammel, S. (Canyon) | Nolan | 2 | 175K | 519K | Jun 1998 – Mar 2017 |
| Jonesville O-6-12190 | Brookston Energy, Inc. only | Waskom (Alexander Sand) | Harrison | 2 | 158K | 683K | Jan 1993 – Jul 2026 |
| Alexander 17 O-10-35031 | Ozark Exploration, Inc. only | Zebulon, North (Fusselman) | Howard | 1 | 150K | 12 | Jun 1996 – Jul 2026 |
| Alexander Unit 66 O-14-9078 | Presidio Petroleum LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 2 | 143K | 836K | Aug 2013 – Jul 2026 |
| Cox Alexander O-10-39221 | New Height Energy, LLC only | Spraberry (Trend Area) | Howard | 3 | 117K | 332K | Feb 2008 – Jul 2026 |
| Alexander O-9-6874 | Apache Corporation only | Spraberry (Trend Area) | Reagan | 5 | 116K | 409K | Jan 1993 – Jul 2026 |
| Alexander Estate O-8-15792 | Laneer Resources Company only | Alexander, S. (Canyon, LO) | Stonewall | 21 | 112K | 72 | Jan 1993 – Jul 2026 |
| Tracy-Taylor O-6-13179 | Shelby Operating Company only | Waskom (Alexander Sand) | Harrison | 1 | 107K | 460K | Jun 1993 – Jul 2026 |
| Alexander 66 O-14-8859 | Presidio Petroleum LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 1 | 106K | 517K | Jan 2013 – Jul 2026 |
| Alexander, Naomi O-11-5924 | Kala Oil Company only | Slaughter | — | 10 | 103K | 66.5K | Jan 1993 – Jul 2026 |
| Alexander, Ruth O-11-64161 | Moonshine Resources, LLC only | Anton (Clear Fork, Lower) | Hockley | 1 | 99.5K | 39 | Jan 1993 – Jul 2026 |
| Alexander 67 O-14-8866 | Presidio Petroleum LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 2 | 98.6K | 624K | Mar 2013 – Jul 2026 |
| Alexander O-8-2319 | Bluff Creek Petroleum, LLC only | Jones County Regular | Jones | 8 | 86.6K | 20 | Jan 1993 – Jul 2026 |
| Alexander, J. H. O-7-8475 | Linder, John Operating Co., LLC only | East Texas | — | 8 | 80.2K | 9.11K | Jan 1993 – Nov 2023 |
| Alexander, Minor -A- O-8-4170 | Bridwell Oil Co. only | Alexander (Canyon Lower) | — | 1 | 80K | 168 | Jan 1993 – Jul 2026 |
| Alexander, Kathleen Jones O-4-7985 | Nylo Oil & Gas LLC only | Palo Blanco | Brooks | 3 | 74.5K | 21 | Jan 1993 – Jul 2026 |
| Alexander, Kathleen Jones O-1-3735 | Jaybird Operating, LLC only | Floresville, E. (Poth B 2800) | Wilson | 5 | 72.7K | 609 | Jan 1993 – Jul 2026 |
| Shell-Alexander O-10-33812 | Thompson, J. Cleo only | Zebulon, North (Fusselman) | Howard | 1 | 71.2K | 17 | May 1993 – Apr 2000 |
| Steele O-6-12264 | Brookston Energy, Inc. only | Waskom (Alexander Sand) | Harrison | 1 | 71.1K | 369K | Jan 1993 – Jul 2026 |
| Alexander-Searcy Unit O-8-15887 | Petex only | Stephens County Regular | Stephens | 1 | 70K | 46 | Jan 1993 – Jul 2026 |
| Alexander O-14-4908 | Sutherland Energy Co., LLC only | Hansford(kinderhook) | Hansford | 1 | 68.1K | 20.3K | Jan 1993 – Jul 2026 |
| Alexander Trust "N" O-11-60827 | Patton Exploration, Inc. only | Croton (Tannehill) | — | 6 | 65.6K | 20 | Jan 1993 – Jul 2026 |
| Alexander "A" O-5-3793 | Kilmarnock Oil Company, Inc. only | Powell | Navarro | 2 | 61.6K | 0 | Nov 2004 – Jul 2026 |
| Jobe O-6-12950 | Brookston Energy, Inc. only | Waskom (Alexander Sand) | Harrison | 2 | 60.6K | 137K | Jan 1993 – Jul 2026 |
| Alexander, J. H. O-7-7153 | Basa Resources, Inc. only | East Texas | — | 1 | 58.7K | 38.3K | Jan 1993 – Jul 2026 |
| Alexander O-9-13511 | Bowerman Oil & Gas, Inc. only | Speck, SE. (King) | Concho | 2 | 55.6K | 13K | Sep 1993 – Jul 2026 |
| Alexander-Odc O-14-3199 | Hamman Oil & Refining Company only | Clementine (Morrow, Upper) | Hansford | 2 | 54.5K | 494K | Jan 1993 – Sep 2020 |
| Alexander O-10-34122 | Ozark Exploration, Inc. only | Varel, West (Fusselman) | Howard | 1 | 53.2K | 8 | Feb 1994 – Jul 2026 |
| Stephenson O-6-12817 | Shelby Operating Company only | Waskom (Alexander Sand) | Harrison | 1 | 47.6K | 336K | Jan 1993 – Jul 2026 |
| Alexander Unit 48 O-10-43786 | New Height Energy, LLC only | Spraberry (Trend Area) | Howard | 1 | 45.6K | 199K | Feb 2013 – Jul 2026 |
| Alexander O-13-28459 | Gruy Petroleum Management Co. only | Fargo, W. (Strawn Conglomerate) | Wilbarger | 1 | 43.1K | 31 | Jan 1993 – Jul 1997 |
| Alexander O-9-13021 | Armor Petroleum, Inc. only | Speck, SE. (King) | Concho | 1 | 42.9K | 190K | Jan 1993 – May 2009 |
| Alexander O-11-65327 | Double Barrel Oil LLC only | Levelland | Cochran | 2 | 41.6K | 2.01K | Jan 1993 – Jul 2026 |
| Alexander Estate "A" O-11-15358 | Patton Exploration, Inc. only | Reutinger (Tannehill, Upper) | King | 5 | 40K | 20 | Jan 1993 – Jul 2026 |