| North Thompson Unit O-3-24289 | Thompson, North | Fort Bend | 39 | 1.75M | 250K | Jan 2003 – Apr 2026 |
| Traylor, T.P. "B" O-2-7684 | Heyser (5400 #2) | Victoria | 8 | 1.03M | 509K | Jan 1993 – Apr 2026 |
| Pierce Estates, Inc. O-3-4526 | Withers, North | Wharton | 39 | 980K | 289K | Jan 1993 – Apr 2026 |
| Duval Ranch, Sec. #288 O-4-452 | Charamousca, South | Duval | 20 | 854K | 168K | Jan 1993 – Apr 2026 |
| Welder, E. H., -C- O-4-2126 | Plymouth | San Patricio | 51 | 763K | 1.16M | Jan 1993 – Apr 2026 |
| Goode, W.H.C. O-6-164 | Cayuga | Anderson | 1 | 562K | 197K | Jan 1993 – Apr 2026 |
| Pierce Estates, Inc. O-3-12650 | Withers, North (-a- Sand) | Wharton | 20 | 515K | 151K | Jan 1993 – Apr 2026 |
| Knowles, W. T. O-3-62 | Anahuac | Chambers | 5 | 508K | 648K | Jan 1993 – Apr 2026 |
| Pierce Ranch N 4900 Unit O-3-24336 | Pierce Ranch (4900) | Wharton | 14 | 476K | 570K | May 2003 – Apr 2026 |
| Cockburn -B- O-3-2868 | Magnet Withers | Wharton | 12 | 463K | 122K | Jan 1993 – Apr 2026 |
| Dunwoody, Charles O-2-691 | Heyser | Calhoun | 4 | 416K | 228K | Jan 1993 – Apr 2026 |
| Wolters, R.A. NCT-1 O-3-22858 | Thompson | Fort Bend | 7 | 410K | 89.2K | Jan 1997 – Apr 2026 |
| Ramsey State Prison Farm "A" O-3-23518 | Lochridge | Brazoria | 3 | 410K | 286K | Jul 1998 – Apr 2026 |
| Moczygemba, G. J. O-2-2357 | Lucille (Hockley, Upper) | Live Oak | 10 | 397K | 26.7K | Jan 1993 – Apr 2026 |
| Halamicek, J. M. O-3-2906 | Magnet Withers | Wharton | 5 | 326K | 150K | Jan 1993 – Apr 2026 |
| Rampy, H. R. O-6-170 | Cayuga | Anderson | 2 | 320K | 146K | Jan 1993 – Apr 2026 |
| Curlee, D. M. -A- O-2-4647 | Berkow (Kohler) | Bee | 2 | 306K | 61.2K | Jan 1993 – Apr 2026 |
| -L- Ranch Co. -B- O-2-875 | Lolita (Marginulina Zone) | Jackson | 7 | 275K | 145K | Jan 1993 – Apr 2026 |
| Tullis O-2-5336 | Tom Lyne, NE. (Hockley E) | Live Oak | 1 | 261K | 23.5K | Jan 1993 – Apr 2026 |
| Ramsey State Prison Farm -B- O-3-2800 | Lochridge | Brazoria | 3 | 260K | 279K | Jan 1993 – Apr 2026 |
| Pierce Ranch N 4850 Unit O-3-24337 | Pierce Ranch (4850) | Wharton | 7 | 245K | 112K | May 2003 – Apr 2026 |
| Traylor, T. P. -B- O-2-3180 | Heyser (5400 #3) | Victoria | 3 | 238K | 139K | Jan 1993 – Apr 2026 |
| Syphrett, D. W. O-3-65 | Anahuac | Chambers | 3 | 234K | 443K | Jan 1993 – Apr 2026 |
| Munson Heirs O-3-24120 | Livingston (Yegua 4100) | Polk | 1 | 225K | 0 | Jan 2002 – Apr 2026 |
| Gillett, H. P. O-2-2352 | Lucille (Hockley, Upper) | Live Oak | 3 | 223K | 5.59K | Jan 1993 – Apr 2026 |
| Bonner, R. R. O-2-3178 | Heyser (5400 #3) | Victoria | 1 | 220K | 264K | Jan 1993 – Apr 2026 |
| Wilson, J. O. O-4-5819 | Lundell, S. (Mirando) | Duval | 5 | 212K | 60K | Jan 1993 – Apr 2026 |
| Wills, N. N. "a" South O-6-14231 | Cayuga (Woodbine) | Anderson | 1 | 208K | 117K | Mar 2003 – Apr 2026 |
| Willcox, G. C., Etal O-3-66 | Anahuac | Chambers | 5 | 208K | 411K | Jan 1993 – Apr 2026 |
| Tullis "C" O-2-7907 | Tom Lyne, NE. (Hockley E) | Live Oak | 2 | 199K | 16.8K | Oct 1993 – Apr 2026 |
| East Magnet Withers Frio Unit O-3-2918 | Magnet Withers, E. (Frio) | Wharton | 4 | 193K | 59K | Apr 1993 – Apr 2026 |
| Howard O-3-9839 | Cotton Lake (Howard No. 2 Sd.) | Chambers | 3 | 188K | 110K | Jan 1993 – Apr 2026 |
| Rampy, L. A. O-6-14256 | Cayuga (Woodbine) | Anderson | 1 | 188K | 36.6K | Jul 2003 – Apr 2026 |
| Gau, L. C. Etal O-3-11214 | Jackson Pasture, E. (FB-2, F-1) | Chambers | 2 | 180K | 14.6K | Jan 1993 – Apr 2026 |
| Corbett O-3-9874 | Bonney (Frio Upper) | Brazoria | 2 | 172K | 59.8K | Jan 1993 – Apr 2026 |
| Clay, Ollie O-6-161 | Cayuga | Anderson | 3 | 171K | 112K | Jan 1993 – Apr 2026 |
| Four-Way Ranch O-2-849 | Lolita, Deep (4-Way Zone) | Jackson | 6 | 165K | 356K | Jan 1993 – Apr 2026 |
| Peterson, G. O-3-63 | Anahuac | Chambers | 2 | 145K | 376K | Jan 1993 – Apr 2026 |
| Willoughby, A. J. O-2-937 | Lolita (Ward Zone) | Jackson | 1 | 144K | 199K | Jan 1993 – Apr 2026 |
| Ware, G. W. O-6-173 | Cayuga | Anderson | 3 | 141K | 153K | Jan 1993 – Apr 2026 |
| Four Way Ranch O-2-9167 | Lolita, Deep (7000 Zone) | Jackson | 1 | 137K | 199K | Mar 2006 – Apr 2026 |
| Wortham, V. C. O-6-14208 | Cayuga (Woodbine) | Anderson | 1 | 134K | 75K | Mar 2003 – Apr 2026 |
| Mitchell, Mary O-2-881 | Lolita (Marginulina Zone) | Jackson | 5 | 133K | 106K | Jan 1993 – Apr 2026 |
| Hamilton, J. H. O-2-850 | Lolita, Deep (4-Way Zone) | Jackson | 2 | 129K | 70.1K | Jan 1993 – Apr 2026 |
| Campbell, J. A. O-6-160 | Cayuga | Anderson | 11 | 116K | 92.2K | Jan 1993 – Apr 2026 |
| Ware, G. W. O-6-14266 | Cayuga (Woodbine) | Anderson | 2 | 115K | 60.8K | Jun 2003 – Apr 2026 |
| Bennett, W. H. O-2-703 | Heyser | Calhoun | 3 | 102K | 318K | Jan 1993 – Apr 2026 |
| -L- Ranch Co. -A- O-2-874 | Lolita (Marginulina Zone) | Jackson | 12 | 95.4K | 97.4K | Jan 1993 – Apr 2026 |
| Tullis 215/214 Unit O-2-8944 | Tom Lyne, NE. (Hockley E) | Live Oak | 1 | 95K | 21.3K | Jan 2005 – Apr 2026 |
| Bennett, John M. "B-F" O-2-8677 | La Salle, West (6300) | Jackson | 1 | 87K | 193K | Nov 2001 – Apr 2026 |