| Slaughter, Alex O-11-6003 | Occidental Permian EOR, LLC only | Slaughter | Hockley | 30 | 2.88M | 5.67M | Jan 1993 – Apr 2026 |
| Alexander 4-45 O-10-46408 | Diamondback E&P LLC only | Hoefs T-K (Wolfcamp) | Reeves | 2 | 758K | 4.88M | Nov 2014 – Apr 2026 |
| Alexander O-11-188 | Aviator Energy, LLC only | Alex | Terry | 26 | 701K | 280K | Jan 1993 – Apr 2026 |
| Alexander, Thos. P. Etal O-3-21769 | Hilcorp Energy Company only | Franks, NW. (8900) | Galveston | 2 | 698K | 340K | Jan 1993 – Dec 2010 |
| Alexander Unit O-1-17504 | EOG Resources, Inc. only | Eagleville (Eagle Ford-1) | La Salle | 2 | 533K | 994K | Mar 2014 – Apr 2026 |
| Alexander Bird 43-6 O-9-19884 | Diamondback E&P LLC only | Spraberry (Trend Area) | Reagan | 2 | 498K | 3.52M | Feb 2018 – Apr 2026 |
| Alexander, Birdie R. O-11-10175 | Unitex Oil & Gas, L.L.C. only | Dorward | Garza | 22 | 466K | 266K | Jan 1993 – Apr 2026 |
| Alexander, Geo. O-7-6910 | Basa Resources, Inc. only | East Texas | Rusk | 5 | 448K | 124K | Jan 1993 – Sep 2024 |
| Slaughter, Alex A. Estate "E" O-11-67851 | Altura Energy Ltd. only | Tstar (Abo) | Hockley | 9 | 416K | 8.34K | Dec 1997 – Dec 1998 |
| Alexia O-9-16670 | COG Operating LLC only | Spraberry (Trend Area) | Upton | 9 | 371K | 961K | May 2008 – Apr 2026 |
| Williams, N. M. O-11-189 | Shinnery Oil Company, Inc. only | Alex | Terry | 8 | 368K | 192K | Jan 1993 – Mar 2026 |
| Alexander, H. C., Etal O-7-6793 | Basa Resources, Inc. only | East Texas | Gregg | 9 | 368K | 163K | Jan 1993 – Apr 2026 |
| Alexander TCB Unit O-1-20548 | Trinity Operating (Usg), LLC only | Briscoe Ranch (Eagleford) | Frio | 2 | 347K | 920K | Jan 2022 – Apr 2026 |
| Dickie, Alex O-8-3774 | Basa Resources, Inc. only | Stephens County Regular | Stephens | 7 | 334K | 25.4K | Jan 1993 – Apr 2026 |
| Belle Alexandra O-10-50744 | Halcon Operating Co., Inc. only | Wolfbone (Trend Area) | Pecos | 1 | 332K | 906K | Jan 2018 – Mar 2026 |
| Alexander No. 2 Oil Unit O-3-25662 | Hilcorp Energy Company only | Maple Gap (EY1) | Orange | 1 | 324K | 547K | Aug 2010 – Apr 2026 |
| Alexander No. 3 Oil Unit O-3-26259 | Hilcorp Energy Company only | Maple Gap (EY1) | Orange | 1 | 320K | 493K | Oct 2012 – Apr 2026 |
| Belle Alexandra A O-10-50658 | Halcon Operating Co., Inc. only | Wolfbone (Trend Area) | Pecos | 1 | 301K | 546K | Jan 2018 – Mar 2026 |
| Slaughter, Alex A. Estate "A" O-11-62105 | Altura Energy Ltd. only | Sundown (Abo) | Hockley | 13 | 296K | 53.9K | Jan 1993 – Dec 1998 |
| Alexia O-9-14954 | COG Operating LLC only | Buck Trap, North (Wolfcamp) | Upton | 3 | 274K | 2.6M | Jan 2000 – Feb 2004 |
| Alexis Rae E O-9-22235 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Reagan | 2 | 266K | 1.12M | Nov 2023 – Mar 2026 |
| Alexander, George, Gdn. O-7-7368 | Elms Oil Company only | East Texas | Rusk | 11 | 263K | 64.9K | Jan 1993 – Apr 2026 |
| Hudie Morgan-Alexander O-5-4407 | Valence Operating Company only | Como (Rodessa Hill, Lo.) | Wood | 1 | 219K | 1.08M | Sep 2019 – Apr 2026 |
| Thos. Alexander Unit O-3-22287 | Hilcorp Energy Company only | Franks, NW. (8900) | Galveston | 1 | 209K | 114K | Jan 1994 – Nov 2008 |
| Alexander /400 Ac./ O-4-2046 | Nylo Oil & Gas LLC only | Palo Blanco (FB-S) | Brooks | 4 | 182K | 55 | Jan 1993 – Feb 2025 |
| Alexander O-14-8667 | Amarillo Exploration, Inc. only | Clementine (St. Louis) | Hansford | 4 | 181K | 52.1K | Jun 2012 – Apr 2026 |
| Alexis Rae B O-9-22247 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Reagan | 1 | 179K | 593K | Nov 2023 – Mar 2026 |
| Alexander Heirs O-8-28483 | Katsco Energy, Inc. only | Lake Trammel, S. (Canyon) | Nolan | 2 | 175K | 519K | Jun 1998 – Nov 2016 |
| Jonesville O-6-12190 | Brookston Energy, Inc. only | Waskom (Alexander Sand) | Harrison | 2 | 158K | 683K | Jan 1993 – Apr 2026 |
| Alexis Rae F O-9-22219 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Reagan | 1 | 157K | 459K | Nov 2023 – Mar 2026 |
| Alexander 17 O-10-35031 | Ozark Exploration, Inc. only | Zebulon, North (Fusselman) | Howard | 1 | 150K | 12 | Jun 1996 – Apr 2026 |
| Alex '20' O-10-38128 | Diamondback E&P LLC only | Spraberry (Trend Area) | Martin | 2 | 146K | 130K | Feb 2007 – Apr 2026 |
| Alexander Unit 66 O-14-9078 | Presidio Petroleum LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 2 | 143K | 836K | Aug 2013 – Apr 2026 |
| Alexis Rae H O-9-22250 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Reagan | 1 | 134K | 739K | Nov 2023 – Mar 2026 |
| Alexis Rae C O-9-22248 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Reagan | 1 | 123K | 693K | Nov 2023 – Mar 2026 |
| Cox Alexander O-10-39221 | New Height Energy, LLC only | Spraberry (Trend Area) | Howard | 3 | 117K | 332K | Mar 2008 – Mar 2018 |
| Alexander O-9-6874 | Apache Corporation only | Spraberry (Trend Area) | Reagan | 5 | 116K | 409K | Jan 1993 – Jul 2020 |
| Alexander Estate O-8-15792 | Laneer Resources Company only | Alexander, S. (Canyon, LO) | Stonewall | 21 | 112K | 72 | Jan 1993 – Apr 2026 |
| Tracy-Taylor O-6-13179 | Shelby Operating Company only | Waskom (Alexander Sand) | Harrison | 1 | 107K | 460K | Jun 1993 – Apr 2026 |
| Alexander 66 O-14-8859 | Presidio Petroleum LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 1 | 106K | 517K | Jan 2013 – Apr 2026 |
| Alexander, Naomi O-11-5924 | Kala Oil Company only | Slaughter | Hockley | 10 | 103K | 66.5K | Jan 1993 – Apr 2026 |
| Alexandra O-10-43218 | Halcon Operating Co., Inc. only | Wolfbone (Trend Area) | Pecos | 1 | 100K | 190K | Jul 2013 – Jan 2025 |
| Alexander, Ruth O-11-64161 | Moonshine Resources, LLC only | Anton (Clear Fork, Lower) | Hockley | 1 | 99.5K | 39 | Jan 1993 – Apr 2026 |
| Alexander 67 O-14-8866 | Presidio Petroleum LLC only | Lipscomb, S.E. (Cleveland) | Hemphill | 2 | 98.6K | 624K | Mar 2013 – Apr 2026 |
| Alexis Rae O-9-22249 | Civitas Permian Operating, LLC only | Spraberry (Trend Area) | Reagan | 2 | 91.5K | 712K | Nov 2023 – Mar 2026 |
| Alexander O-8-2319 | Bluff Creek Petroleum, LLC only | Jones County Regular | Jones | 8 | 86.6K | 20 | Jan 1993 – Apr 2026 |
| Alexander, J. H. O-7-8475 | Linder, John Operating Co., LLC only | East Texas | Gregg | 8 | 80.2K | 9.11K | Jan 1993 – Aug 2019 |
| Alexander, Minor -A- O-8-4170 | Bridwell Oil Co. only | Alexander (Canyon Lower) | Stonewall | 1 | 80K | 168 | Jan 1993 – Apr 2026 |
| Sears, Alex O-8-28398 | Anderson, James K. Inc. only | E.J. North (Flippen) | Taylor | 1 | 78K | 45.1K | Feb 1998 – Apr 2026 |
| Alexander, Kathleen Jones O-4-7985 | Nylo Oil & Gas LLC only | Palo Blanco | Brooks | 3 | 74.5K | 21 | Jan 1993 – May 2025 |