| Serio (Grayburg)unit O-10-37270 | Fasken Oil and Ranch, Ltd. only | Serio (Grayburg) | Andrews | 52 | 1.55M | 160K | May 2004 – Aug 2026 |
| Casselman 32 O-10-38385 | Apache Corporation only | Spraberry (Trend Area) | Andrews | 30 | 1.55M | 3.12M | Aug 2007 – Aug 2026 |
| Henry Cowden (Gbsa)unit O-10-36084 | R2Q Operating LLC only | Cowden, North | Andrews | 30 | 1.53M | 313K | Oct 1999 – Aug 2026 |
| Clampett, Jed O-10-35355 | OXY USA EOR, LLC only | Means | Andrews | 32 | 1.52M | 887K | May 1997 – Aug 2026 |
| Fee 'AR' O-10-64235 | Fasken Oil and Ranch, Ltd. only | Spraberry (Trend Area) | Andrews | 11 | 1.52M | 1.62M | Dec 2025 – Aug 2026 |
| Fee -Y- O-10-23655 | Fasken Oil and Ranch, Ltd. only | Serio (Grayburg) | Andrews | 34 | 1.43M | 211K | by Jan 1993 – Aug 2026 |
| Parker, J. E. O-10-36494 | Hilcorp Energy Company only | Martin (Consolidated) | Andrews | 43 | 1.43M | 23.7M | Dec 2000 – Jul 2026 |
| Holt, O. B. /S/ O-10-798 | Occidental Permian Ltd. only | Cowden, North | Andrews | 29 | 1.41M | 501K | by Jan 1993 – Aug 2026 |
| Cope, H. R. O-10-8636 | Citation Oil & Gas Corp. only | Nolley (Wolfcamp) | Gaines | 11 | 1.38M | 481K | by Jan 1993 – Aug 2026 |
| UL Mason Unit O-10-45925 | Diamondback E&P LLC only | Spraberry (Trend Area) | Andrews | 4 | 1.38M | 1.93M | May 2014 – Aug 2026 |
| Midland Farms NO Grby UT O-10-9893 | Fasken Oil and Ranch, Ltd. only | Midland Farms, North (Grayburg) | Andrews | 71 | 1.38M | 77.1K | by Jan 1993 – Jun 2024 |
| Thornberry, M. A. Cons. I O-10-17452 | Crescent Energy Operating, LLC only | Fuhrman-Mascho | Andrews | 54 | 1.36M | 1.17M | by Jan 1993 – Aug 2026 |
| Afg Unit O-11-68662 | Rafter T Resources LLC only | Giebel (Cfa) | Gaines | 28 | 1.34M | 635K | Apr 2004 – Aug 2026 |
| Means, J. S. a/C 4 O-10-11007 | Hilcorp Energy Company only | Means, South (Wolfcamp) | Andrews | 22 | 1.34M | 1.2M | by Jan 1993 – Aug 2026 |
| Mabee Mercury O-10-34660 | COG Operating LLC only | Mercury M. (Fusselman) | Andrews | 2 | 1.31M | 7.11K | Sep 1995 – Jan 2025 |
| Minton, E. H.-Acct. #2 O-10-9246 | Crescent Energy Operating, LLC only | McFarland (Wolfcamp) | Andrews | 10 | 1.29M | 2.63M | by Jan 1993 – Aug 2026 |
| Scarborough -C- O-10-16915 | Texland Petroleum, L.P. only | Fullerton (San Andres) | Andrews | 15 | 1.28M | 171K | by Jan 1993 – Aug 2026 |
| Texas Univ. -CC- O-10-4041 | Ovintiv USA Inc. only | Magutex (Devonian) | Andrews | 19 | 1.26M | 825K | by Jan 1993 – Aug 2026 |
| Walker, B. S. O-10-21064 | Hilcorp Energy Company only | Fuhrman-Mascho | Andrews | 14 | 1.25M | 323K | by Jan 1993 – Aug 2026 |
| Parker, J. E. -J- O-10-11177 | Hilcorp Energy Company only | Bakke (Devonian) | Andrews | 4 | 1.24M | 1.81M | by Jan 1993 – Aug 2026 |
| University "9" -D- O-10-10089 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 10 | 1.19M | 764K | by Jan 1993 – Dec 2008 |
| UL 10 Harmon O-10-45845 | Ring Energy, Inc. only | Fuhrman-Mascho | Andrews | 7 | 1.18M | 1.8M | Nov 2014 – Aug 2026 |
| Deford-White Oil Unit O-10-31898 | Citation Oil & Gas Corp. only | Block a-34 (Glorieta) | Andrews | 3 | 1.17M | 56.8K | by Jan 1993 – Aug 2026 |
| King, E. F. O-10-1710 | Citation Oil & Gas Corp. only | Fuhrman-Mascho | Andrews | 24 | 1.12M | 377K | by Jan 1993 – Aug 2026 |
| Putnam the Pio 32 O-10-60451 | Scout Energy Management LLC only | Spraberry (Trend Area) | Andrews | 8 | 1.1M | 2.55M | Aug 2023 – Aug 2026 |
| Wilson -B- O-10-31066 | Hilcorp Energy Company only | Fullerton ( Devonian ) | Andrews | 5 | 1.1M | 1.39M | by Jan 1993 – Aug 2026 |
| Fisher, Nola Unit O-10-23379 | Ring Energy, Inc. only | Shafter Lake (San Andres) | Andrews | 39 | 1.09M | 381K | by Jan 1993 – Aug 2026 |
| University JV 14 O-10-46383 | Burk Royalty Co., Ltd. only | Shafter Lake (San Andres) | Andrews | 6 | 1.08M | 400K | Jan 2015 – Aug 2026 |
| Thornberry, M. A. Cons. III O-10-17454 | Crescent Energy Operating, LLC only | Fuhrman-Mascho | Andrews | 52 | 1.08M | 892K | by Jan 1993 – Aug 2026 |
| University Consolidated Xii O-10-23161 | Crescent Energy Operating, LLC only | Fuhrman-Mascho | Andrews | 60 | 1.07M | 1.28M | by Jan 1993 – Aug 2026 |
| Parker Unit O-10-40946 | Morningstar Operating LLC only | Parker (Wolfcamp Consolidated) | Andrews | 92 | 1.07M | 1.39M | Oct 2011 – Aug 2026 |
| Fee 'BH' O-10-45317 | Fasken Oil and Ranch, Ltd. only | Spraberry (Trend Area) | Midland | 20 | 1.06M | 3.27M | May 2014 – Aug 2026 |
| Fee "Al" O-10-39989 | Fasken Oil and Ranch, Ltd. only | Spraberry (Trend Area) | Andrews | 19 | 1.06M | 5.02M | Mar 2010 – Aug 2026 |
| Logsdon, C. W. "E" O-10-19320 | Texland Petroleum, L.P. only | Fullerton (San Andres) | Andrews | 22 | 1.06M | 272K | by Jan 1993 – Aug 2026 |
| Fee "AD" O-10-41382 | Fasken Oil and Ranch, Ltd. only | Spraberry (Trend Area) | Midland | 18 | 1.05M | 4.13M | Jul 2011 – Aug 2026 |
| University Consolidated Xiii O-10-23051 | Ovintiv USA Inc. only | Magutex (Devonian) | Andrews | 8 | 1.04M | 924K | by Jan 1993 – Jul 2020 |
| Kolb "31-5" O-10-40516 | Sabalo II Operating, LLC only | Spraberry (Trend Area) | Andrews | 15 | 1.03M | 2.17M | Jun 2010 – Aug 2026 |
| University "9" -CE- O-10-7042 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 7 | 1.03M | 548K | by Jan 1993 – Dec 2008 |
| Westbrook Oil Corp. O-10-4536 | Hilcorp Energy Company only | Nolley (Wolfcamp) | Andrews | 18 | 1.02M | 693K | by Jan 1993 – Aug 2026 |
| Thornberry, M. A. Cons. II O-10-17453 | Crescent Energy Operating, LLC only | Fuhrman-Mascho | Andrews | 59 | 1.02M | 814K | by Jan 1993 – Aug 2026 |
| Boydell South Unit O-10-40861 | Texland Petroleum, L.P. only | Boydell, S. (Clear Fork, Lo.) | Andrews | 31 | 995K | 506K | Aug 2011 – Aug 2026 |
| Phillips University "P" O-10-37209 | Crescent Energy Operating, LLC only | Martin (Consolidated) | Andrews | 25 | 978K | 3.9M | Jan 2004 – Aug 2026 |
| University "9" -B- O-10-8560 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 10 | 971K | 608K | by Jan 1993 – Dec 2008 |
| Thornberry-NWS O-10-1704 | Crescent Energy Operating, LLC only | Fuhrman-Mascho | Andrews | 47 | 970K | 1.55M | by Jan 1993 – Aug 2026 |
| J. T. Lindley-Lynne O-10-24675 | Montare Operating, Ltd. only | Fuhrman-Mascho | Andrews | 46 | 969K | 463K | by Jan 1993 – Aug 2026 |
| Parker, J.E. O-10-45616 | Hilcorp Energy Company only | Three Bar (Wichita) | Andrews | 10 | 956K | 2.49M | Jan 2014 – Aug 2026 |
| Scarborough O-10-17638 | Unitex Oil & Gas, L.L.C. only | Fullerton (San Andres) | Andrews | 13 | 948K | 92K | by Jan 1993 – Aug 2026 |
| State University -At- O-10-9844 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 8 | 945K | 786K | by Jan 1993 – Dec 2008 |
| State University -AU- O-10-9559 | XTO Energy Inc. only | University Block 9 (Devonian) | Andrews | 8 | 939K | 602K | by Jan 1993 – Dec 2008 |
| University/Energen Grayburg Unit O-10-37100 | Libertad Operating LLC only | Block 2 (Grayburg) | Andrews | 33 | 923K | 0 | Jul 2003 – Aug 2026 |