| Alma O-10-6960 | Highmark Energy Operating, LLC only | TXL (Ellenburger) | Ector | 5 | 210K | 614K | Jan 1993 – Jul 2026 |
| Alma Strawn Unit O-13-15669 | Nortex Energy, Inc. only | Alma (Strawn) | Montague | 12 | 170K | 180 | Jan 1993 – Jul 2026 |
| Alma O-10-18022 | Highmark Energy Operating, LLC only | TXL (Tubb) | Ector | 6 | 151K | 303K | Jan 1993 – Jul 2026 |
| Spieckermann, Alma O-1-12077 | Zachry Exploration, Inc. only | Pilgrim (Austin Chalk) | Gonzales | 3 | 136K | 7.24K | Jan 1993 – Jul 2026 |
| Perkins, Alma O-14-1455 | Wischkaemper, Kenneth only | Panhandle Wheeler County Field | — | 3 | 104K | 21 | Jan 1993 – Jul 2026 |
| Carpenter, Alma O-3-18770 | Siana Oil & Gas only | Nome | Jefferson | 2 | 97.4K | 223K | Jan 1993 – Jul 2026 |
| Orsborn, Alma O-8-25760 | Apache Corporation only | Katz (5100) | Knox | 3 | 94.6K | 13.7K | Jan 1993 – Dec 2009 |
| Carpenter, Alma M. O-3-20351 | Siana Oil & Gas only | Nome (S-1) | Jefferson | 1 | 89.9K | 140K | Jan 1993 – Jul 2026 |
| Thalmann O-1-15289 | Exco Operating Company, LP only | Briscoe Ranch (Eagleford) | Dimmit | 1 | 85.8K | 219K | Jan 2011 – Jul 2026 |
| Brumfield, J. A. O-11-67621 | McClure Oil Company, Inc. only | Palma (Clearfork) | Gaines | 3 | 83.6K | 0 | Aug 1996 – Jul 2026 |
| Thalmann O-1-15501 | CML Exploration, LLC only | Pearsall (Austin Chalk) | Dimmit | 1 | 81.2K | 317K | Nov 2010 – Oct 2024 |
| Alma O-10-7001 | Highmark Energy Operating, LLC only | TXL (Silurian) | Ector | 5 | 52.1K | 132K | Jan 1993 – Jul 2026 |
| Thalmann O-1-21896 | CML Exploration, LLC only | Pearsall (Austin Chalk) | Dimmit | 1 | 50.1K | 29.4K | Jun 2024 – Jul 2026 |
| Edwards O-1-12729 | Thalmann, David Vac Service Inc only | Pearsall (Austin Chalk) | Frio | 1 | 47K | 49.3K | Jan 1993 – Sep 2003 |
| Alma O-10-16751 | Highmark Energy Operating, LLC only | TXL (Devonian) | Ector | 3 | 47K | 215K | Jan 1993 – Jul 2026 |
| Alma Anderson Oil Unit No. 1 O-6-14521 | XTO Energy Inc. only | Carthage (Travis Peak) | Panola | 1 | 46.9K | 475K | May 2006 – Sep 2024 |
| Cook, S. G. O-13-10389 | Mountain Creek Oil Company, Inc. only | Alma (Strawn) | — | 5 | 44.5K | 21 | Jan 1993 – Jul 2026 |
| Oringderff, Eaton O-14-2505 | Oringderff, Alma Oil Properties only | Horizon (Cleveland) | Ochiltree | 6 | 43.8K | 409K | Jan 1993 – Oct 2011 |
| Graves O-13-33335 | Mountain Creek Oil Company, Inc. only | Alma (Strawn) | Montague | 4 | 40.4K | 0 | Jun 2014 – Jul 2026 |
| Peeler, Graves O-1-14059 | Thalmann Oilfield only | Peeler Ranch (Wales) | McMullen | 1 | 37.5K | 0 | Aug 1996 – Jul 2026 |
| Little Minerals -A- O-1-17839 | Thalmann Oilfield only | Palmeras (Olmos) | Dimmit | 1 | 35.6K | 0 | Dec 2013 – Jul 2026 |
| Pylant, Alma O-11-63823 | Beach Exploration, Inc. only | Ackerly (Dean Sand) | Dawson | 2 | 35K | 2.28K | Jan 1993 – Nov 2016 |
| Alma O-10-16473 | Highmark Energy Operating, LLC only | TXL (Wolfcamp, North) | Ector | 3 | 30.6K | 94.9K | Jan 1993 – Jul 2026 |
| Alma O-10-29189 | Legacy Reserves Operating LP only | TXL (San Andres) | Ector | 2 | 28.7K | 55.7K | Jan 1993 – Apr 2018 |
| Alma O-10-16869 | Highmark Energy Operating, LLC only | TXL, North (Waddell) | Ector | 5 | 27.9K | 30.1K | Jan 1993 – Jul 2026 |
| Traylor, Alma V O-2-8131 | Neg Operating LLC only | Provident City (Yegua -N-) | Lavaca | 1 | 27.6K | 16K | Nov 1995 – Dec 2002 |
| Gaines, Lena O-6-4254 | Linder, John Operating Co., LLC only | Lena Alma (Woodbine) | — | 2 | 24.6K | 6 | Jan 1993 – Jul 2026 |
| Unsicker, Alma D. O-10-33576 | Free Rein Operating LLC only | Heiner, North | Pecos | 1 | 22.9K | 424K | Jan 1993 – Jul 2026 |
| Mills, Mary Alice O-1-12416 | Thalmann, David Vac Service Inc only | Pearsall (Austin Chalk) | Frio | 1 | 22.8K | 1.91K | Jan 1993 – Jul 2026 |
| Shell, Alma Davis O-4-9332 | Dewbre Petroleum Corporation only | Midway, S. (Dubose) | San Patricio | 1 | 21.8K | 101K | Jan 1993 – Jul 2026 |
| Ramirena Creek O-2-10182 | Paleo Oil Company LLC only | Alma Bell (4100) | Live Oak | 1 | 21.7K | 5.14K | Jan 2012 – Oct 2024 |
| Colling, Alma O-13-30666 | Felderhoff Production Company only | Sherman, East (Davis) | Grayson | 1 | 18.6K | 528K | May 2006 – Jul 2026 |
| Alma "B" O-14-7525 | Courson Oil & Gas, Inc. only | Farnsworth-Conner (Des Moines) | Ochiltree | 1 | 17.6K | 470 | Jun 2004 – Jul 2026 |
| Kinder Halman O-13-33498 | Eagleridge Operating, LLC only | KRS (Marble Falls) | Jack | 1 | 14.6K | 175K | Jan 2015 – Jul 2026 |
| Scottish Rite-Buckner O-1-8077 | Thalmann, David Vac Service Inc only | Evergreen Farms (3100) | Dimmit | 1 | 14.3K | 13.3K | Jan 1993 – Aug 2005 |
| Alma O-14-7487 | Courson Oil & Gas, Inc. only | Farnsworth-Conner (Des Moines) | Ochiltree | 1 | 13.9K | 51.3K | Jan 2004 – Jul 2026 |
| Sultenfuss, L. F. O-1-4288 | Thalmann, David Vac Service Inc only | Big Wells (San Miguel) | — | 1 | 13.8K | 81 | Jan 1993 – Oct 2001 |
| Smith, Talmadge O-6-12885 | Phillips, Jack L. Co. only | Chapman (Travis Peak) | Rusk | 1 | 12.2K | 216K | Jan 1993 – Jul 2006 |
| Herndon, W. C., et Al O-14-3220 | Oringderff, Alma Oil Properties only | Perryton, West (Marmaton) | — | 1 | 12K | 37.4K | Jan 1993 – Mar 2012 |
| Smith, Talmadge O-6-14486 | Phillips, Jack L. Co. only | Minden (Travis Peak Cons.) | Rusk | 1 | 10.9K | 70.5K | Apr 2006 – Jul 2026 |
| Pieper, Alma "35" O-10-39026 | Diamondback E&P LLC only | Spraberry (Trend Area) | Glasscock | 1 | 10.4K | 16.5K | Mar 2005 – Jul 2026 |
| Zalmanek, J. W. O-1-15081 | Blue Flame Operating Company LLC only | Milbur (Poth) | Milam | 1 | 10.2K | 0 | Jul 2009 – Jul 2026 |
| Pieper, Alma "35" O-10-36522 | Endeavor Energy Resources L.P. only | Saint Lawrence (Strawn) | Glasscock | 1 | 9.86K | 28.6K | Dec 2000 – Jan 2009 |
| Weyman, Alma O-10-32310 | Arkland Producing Co., Inc. only | S.F.M. (Strawn) | Glasscock | 2 | 9.54K | 299K | Jan 1993 – May 2019 |
| Halman, et Al O-13-18977 | Quest-Tex Energy OP II, LLC only | Chico, West (Conglomerate 5700) | Wise | 1 | 8.68K | 100K | Jan 1993 – Jul 2026 |
| Alma Garcia Oil Unit O-4-13643 | Gasper Rice Resources, Ltd. only | Cadena (Yegua 5500) | Duval | 1 | 7.51K | 18K | Mar 2011 – Dec 2016 |
| Cooper, G. M., NCT-1 O-14-2918 | Oringderff, Alma Oil Properties only | Spicer (Marmaton) | — | 1 | 7.25K | 67.5K | Jan 1993 – Mar 2001 |
| Stuart, Alma O-8-7499 | Quantum Investments only | Abkirk (Tannehill) | — | 1 | 6.65K | 21 | Jan 1993 – Jul 2026 |
| Little Minerals O-1-17748 | Thalmann Oilfield only | Palmeras (Olmos) | Zavala | 2 | 6.53K | 0 | Oct 2013 – Jul 2026 |
| King, Alma O-13-28737 | Xplore Operating, LLC only | Lost Valley (Marble Falls) | Jack | 1 | 6.46K | 92.5K | Feb 1994 – Jun 2021 |