| North Central Levelland Unit O-11-60557 | Hilcorp Energy Company | Levelland | 565 | 26M | 5.74M | by Jan 1993 – Aug 2026 |
| Mallet Unit O-11-18149 | Hilcorp Energy Company | Slaughter | 352 | 25.1M | 40.1M | by Jan 1993 – Aug 2026 |
| West Levelland Unit O-11-60190 | Hilcorp Energy Company | Levelland | 361 | 14.2M | 3.24M | by Jan 1993 – Aug 2026 |
| Northwest Mallet Unit O-11-18246 | Hilcorp Energy Company | Slaughter | 179 | 13M | 6.66M | by Jan 1993 – Aug 2026 |
| Igoe-Smith Oper. Area O-11-5947 | Occidental Permian EOR, LLC | Slaughter | 112 | 7.84M | 4.44M | by Jan 1993 – Aug 2026 |
| Boyd O-11-5907 | Hilcorp Energy Company | Slaughter | 78 | 7.46M | 5.26M | by Jan 1993 – Aug 2026 |
| Woodley, F. L. O-11-5998 | Hilcorp Energy Company | Slaughter | 111 | 6.35M | 7.41M | by Jan 1993 – Aug 2026 |
| Dean, C. S. "A" O-11-6035 | Hilcorp Energy Company | Slaughter | 236 | 5.36M | 3.75M | by Jan 1993 – Aug 2026 |
| Xit Unit O-11-60436 | Hilcorp Energy Company | Levelland | 185 | 4.84M | 2.63M | by Jan 1993 – Aug 2026 |
| Duggan Slaughter Unit O-11-17616 | Ctoc Energy, LLC | Slaughter | 260 | 4.67M | 1.56M | by Jan 1993 – Aug 2026 |
| Whiteface Unit O-11-60232 | Double Barrel Oil LLC | Levelland | 188 | 4.22M | 1.27M | by Jan 1993 – Aug 2026 |
| Miller-Wright Unit O-11-61133 | Kimbell Operating Company | Levelland | 66 | 2.47M | 451K | by Jan 1993 – Aug 2026 |
| Conoco-Dean Unit O-11-60106 | R2Q Operating LLC | Slaughter | 152 | 2.31M | 1.14M | by Jan 1993 – Aug 2026 |
| Slaughter, NW. (San Andres) Unit O-11-19316 | Aviator Energy, LLC | Slaughter | 95 | 2.23M | 840K | by Jan 1993 – Aug 2026 |
| Wright, J.M. Unit O-11-68120 | A.C.T. Operating Company | Levelland | 99 | 2.11M | 1.72M | Sep 1999 – Aug 2026 |
| Smith-Igoe O-11-6071 | Hilcorp Energy Company | Slaughter | 9 | 1.81M | 1.3M | by Jan 1993 – Aug 2026 |
| Dean, Carrie Slaughter "C" O-11-5942 | Hilcorp Energy Company | Slaughter | 24 | 1.65M | 364K | by Jan 1993 – Aug 2026 |
| Southeast Whiteface Unit O-11-66920 | Raw Oil & Gas, Inc. | Levelland | 45 | 1.64M | 451K | by Jan 1993 – Aug 2026 |
| Reed Wright "B" O-11-62523 | Aviator Energy, LLC | Levelland | 50 | 1.58M | 670K | by Jan 1993 – Aug 2026 |
| Calvin-Starnes Unit O-11-64676 | Vision Oil and Gas LLC | Levelland | 131 | 1.49M | 1.57M | by Jan 1993 – Mar 2026 |
| Dean Unit "B" O-11-60076 | Vision Oil and Gas LLC | Slaughter | 202 | 1.44M | 869K | by Jan 1993 – Dec 2025 |
| Boyd Mallet Unit O-11-18102 | Extex Operating Company | Slaughter | 88 | 1.43M | 1.04M | by Jan 1993 – Aug 2026 |
| Veal O-11-3529 | Extex Operating Company | Levelland | 54 | 1.39M | 542K | by Jan 1993 – Aug 2026 |
| Wright Unit O-11-19452 | Extex Operating Company | Levelland | 111 | 1.35M | 263K | by Jan 1993 – Aug 2026 |
| North-Wright O-11-3894 | Walkabout Operating, LLC | Levelland | 77 | 993K | 126K | by Jan 1993 – Aug 2026 |
| Masten Unit O-11-67253 | Talis Energy Inc. | Levelland | 63 | 972K | 3.75M | Jul 1994 – Aug 2026 |
| Mallet Land & Cattle Co. O-11-6086 | Three Span Oil & Gas, Inc. | Slaughter | 28 | 942K | 355K | by Jan 1993 – Aug 2026 |
| Daniel O-11-67511 | Walkabout Operating, LLC | Landon, East (Dev) | 1 | 939K | 25.6K | Jan 1996 – Jul 2026 |
| Southwest Levelland Unit O-11-60732 | Hilcorp Energy Company | Levelland | 109 | 919K | 298K | by Jan 1993 – Aug 2026 |
| South Mallet Unit O-11-67225 | Winn Operating, LLC | Slaughter | 144 | 859K | 565K | Apr 1994 – Aug 2026 |
| Landon (San Andres) Unit O-11-16737 | Prasad, Hari Production Co. | Landon | 39 | 841K | 21 | by Jan 1993 – Aug 2026 |
| Starnes Unit O-11-16877 | Aviator Energy, LLC | Levelland | 86 | 829K | 130K | by Jan 1993 – Aug 2026 |
| Seaboard-Wright O-11-3896 | Aviator Energy, LLC | Levelland | 38 | 728K | 667K | by Jan 1993 – Aug 2026 |
| Masten, F. O. O-11-3692 | Vision Oil and Gas LLC | Levelland | 89 | 706K | 1.03M | by Jan 1993 – Nov 2025 |
| Stanton, Joe L. Trustee O-11-14924 | R2Q Operating LLC | Levelland | 49 | 600K | 266K | by Jan 1993 – Aug 2026 |
| Bonanza (San Andres) Unit O-11-66221 | Cornerstone Petroleum, LLC | Bonanza (San Andres) | 52 | 593K | 105K | by Jan 1993 – Jul 2026 |
| T. L. B. Unit O-11-60448 | Extex Operating Company | Levelland | 19 | 560K | 360K | by Jan 1993 – Aug 2026 |
| Blake, W. R. O-11-61252 | Novo Energy Resources | Slaughter | 24 | 558K | 625K | by Jan 1993 – Jan 2022 |
| Wright, D. S. O-11-63361 | Momentum Operating Co., Inc. | Levelland | 20 | 502K | 493K | by Jan 1993 – Aug 2026 |
| Frost O-11-67956 | Hunt Cimarron Ltd. Partnership | Buckshot (4950) | 67 | 483K | 407K | Aug 1998 – Aug 2026 |
| Masten "C" O-11-66961 | R2Q Operating LLC | Levelland | 18 | 439K | 579K | Feb 1993 – Aug 2026 |
| Doc Holliday O-11-70985 | Manzano, LLC | Cochran (San Andres) | 2 | 424K | 398K | Nov 2019 – Aug 2026 |
| Slaughter, E. D. Estate O-11-66342 | Jay Management Company, LLC | Bonanza, East (San Andres) | 8 | 411K | 255K | by Jan 1993 – Aug 2026 |
| Henry, John O-11-68353 | Yucca Energy, Inc. | Levelland | 14 | 389K | 1.15M | Oct 2001 – Aug 2026 |
| Masten, F. O "H" O-11-3750 | R2Q Operating LLC | Levelland | 21 | 383K | 355K | by Jan 1993 – Aug 2026 |
| Dean, C. S. "1" O-11-66467 | Desert Production, Inc. | Blowing Sand Deep (Fusselman) | 1 | 375K | 22 | by Jan 1993 – Aug 2022 |
| Wright "A" O-11-3733 | Walkabout Operating, LLC | Levelland | 5 | 364K | 15.1K | by Jan 1993 – Aug 2026 |
| West-Dean O-11-68113 | Yucca Energy, Inc. | Levelland | 9 | 338K | 521K | Jul 1999 – Aug 2026 |
| Masten, F. O. O-11-61980 | Ctoc Energy, LLC | Levelland | 23 | 334K | 178K | by Jan 1993 – Feb 2025 |
| Wright, Della Slaughter O-11-3649 | Momentum Operating Co., Inc. | Levelland | 9 | 328K | 116K | by Jan 1993 – Aug 2026 |