| West Hasting Unit O-3-19054 | Hastings, West | Brazoria | 566 | 45M | 14.1M | Jan 1993 – Jul 2026 |
| Oyster Bayou Field Unit O-3-25515 | Oyster Bayou | Chambers | 102 | 23.1M | 2.94K | Jun 2010 – Jul 2026 |
| Belcher, W. T. "B" O-3-10386 | Manvel (F.B. I, Oligocene) | Brazoria | 37 | 1.6M | 4.04M | Jan 1993 – Jul 2026 |
| Colby, E. H. O-3-8768 | Manvel (4970) | Brazoria | 4 | 913K | 1.52M | Jan 1993 – Jul 2026 |
| Turner, B. L. O-3-5623 | Hastings, East | Brazoria | 28 | 899K | 944K | Jan 1993 – Jul 2026 |
| Ford, H. H. R/a -A- O-3-5614 | Hastings, East | — | 6 | 722K | 552K | Jan 1993 – Jul 2026 |
| H. O. F. A. O-3-10399 | Manvel (F.B. II, Oligocene) | Brazoria | 18 | 707K | 1.46M | Jan 1993 – Jul 2026 |
| Surface, R. O. O-3-5622 | Hastings, East | Brazoria | 2 | 678K | 612K | Jan 1993 – Jul 2026 |
| HCL O-3-26729 | Hastings, West | Brazoria | 3 | 675K | 0 | Apr 2014 – Jul 2026 |
| Lemmer, J. L. O-3-7852 | Manvel, E. (Oakville #3) | Brazoria | 3 | 437K | 301K | Jan 1993 – Jul 2026 |
| Schaefer, Annie S. O-3-5618 | Hastings, East | — | 1 | 297K | 88.3K | Jan 1993 – Jul 2026 |
| Belcher, W. T., "A" O-3-10259 | Manvel (FB-III, Oligocene) | Brazoria | 7 | 256K | 586K | Jan 1993 – Jul 2026 |
| Colby, E.H. et AL O-3-18825 | Manvel (Oligocene) | Brazoria | 1 | 194K | 423K | Jan 1993 – Jul 2026 |
| Miller, Wm. J., Estate O-3-5616 | Hastings, East | Brazoria | 3 | 193K | 362K | Jan 1993 – Jul 2026 |
| Belcher B57 Unit O-3-23589 | Manvel (Oligocene, Frio D) | Brazoria | 1 | 191K | 131K | Aug 1998 – Jul 2026 |
| Kidd, Margaret O-3-5615 | Hastings, East | Brazoria | 8 | 179K | 269K | Jan 1993 – Jul 2026 |
| Way, H. J. -B- O-3-2935 | Manvel (Miocene) | Brazoria | 3 | 179K | 506K | Jan 1993 – Jul 2026 |
| Belcher, W. T. -A- O-3-2926 | Manvel (Miocene) | Brazoria | 11 | 164K | 491K | Jan 1993 – Jul 2026 |
| Way, H. J., -A- O-3-9174 | Manvel (4970) | — | 1 | 162K | 658K | Jan 1993 – Jul 2026 |
| Sneed, Gilbert O-3-5619 | Hastings, East | Brazoria | 8 | 159K | 187K | Jan 1993 – Jul 2026 |
| Belcher, W. T. -A- O-3-10796 | Manvel (FB-III, Oligocene Seg A) | Brazoria | 7 | 153K | 299K | Jan 1993 – Jul 2026 |
| Dawson, L. C. O-3-10398 | Manvel (F.B. II, Oligocene) | — | 2 | 150K | 690K | Jan 1993 – Jul 2026 |
| H. O. F. A. NCT-1 O-3-22688 | Manvel (Miocene) | Brazoria | 3 | 92.6K | 109K | Jan 1995 – Jul 2026 |
| H. O. F. A. O-3-24352 | Manvel (4000) | Brazoria | 1 | 75K | 118K | May 2003 – Jul 2026 |
| Belcher, W.T. "B" O-3-22726 | Manvel (Miocene) | Brazoria | 2 | 70.4K | 67.5K | May 1995 – Jul 2026 |
| Hofa NCT-1 O-3-16731 | Manvel (Miocene 3300) | Brazoria | 1 | 61.9K | 44.7K | Jan 1993 – Jul 2026 |
| Randall-Whiton Miocene Unit O-3-22390 | Hastings (M-14-A) | Brazoria | 1 | 61.9K | 85.5K | Apr 1994 – Jul 2026 |
| Colby, E. H. Etal O-3-2923 | Manvel (Miocene) | Brazoria | 6 | 53.3K | 20.2K | Jan 1993 – Jul 2026 |
| Belcher B58 Unit O-3-23588 | Manvel (Oligocene, Frio D) | Brazoria | 1 | 46.1K | 32.2K | Aug 1998 – Jul 2026 |
| Belcher, W.T. "A" O-3-23157 | Manvel (Miocene 3600) | Brazoria | 1 | 33.2K | 66.1K | Sep 1996 – Jul 2026 |
| H. O. F. A. B O-3-27957 | Manvel (F.B. II, Oligocene) | Brazoria | 1 | 31.6K | 5.84K | Nov 2021 – Jul 2026 |
| Belcher, W. T. "A" O-3-10396 | Manvel (F.B. II, Oligocene) | Brazoria | 5 | 19.1K | 39.8K | Jan 1993 – Jul 2026 |
| Surface, J. W. O-3-5621 | Hastings, East | Brazoria | 4 | 9.81K | 329 | Jan 1993 – Jul 2026 |
| Williams, H. G. O-3-5624 | Hastings, East | — | 4 | 9.79K | 7.56K | Jan 1993 – Jul 2026 |
| H. O. F. A. O-3-2929 | Manvel (Miocene) | Brazoria | 17 | 6.93K | 21.4K | Jan 1993 – Jul 2026 |
| Williams, H. G. B O-3-27834 | Hastings, East | Brazoria | 1 | 5.93K | 15.2K | Oct 2020 – Jul 2026 |
| Turner, B. L. G-3-148965 | Hastings (M-2) | Brazoria | 1 | 0 | 0 | Mar 1994 – Jul 2026 |
| Turner, B. L. G-3-146627 | Hastings (M-14) | Brazoria | 1 | 0 | 3.06K | Apr 1993 – Jul 2026 |
| Turner, B. L. G-3-162664 | Hastings (M-10) | Brazoria | 1 | 0 | 9.69K | Mar 1997 – Jul 2026 |
| Turner, B. L. G-3-141828 | Hastings (M-13) | Brazoria | 1 | 0 | 165K | Jan 1993 – Jul 2026 |
| Whiton, G. G-3-161716 | Hastings (M-13) | Brazoria | 1 | 0 | 144K | Feb 1997 – Jul 2026 |
| Jackson, Felix et AL G-3-165281 | Oyster Bayou (FB-2, Frio 1) | Chambers | 1 | 0 | 0 | Jun 1997 – Jul 2026 |
| Middleton, Archie G-3-251252 | Oyster Bayou (Frio 2) | Chambers | 1 | 0 | 0 | Jul 2009 – Jul 2026 |
| Grote, Emil G-3-114483 | Hastings (M-2) | Brazoria | 1 | 0 | 14.5K | Jan 1993 – Jul 2026 |
| Drake, Fannie G-3-137634 | Hastings (M-5A) | Brazoria | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Jackson, Felix et AL G-3-180265 | Oyster Bayou (Frio 2) | Chambers | 1 | 0 | 602K | Oct 2000 – Jul 2026 |
| Middleton, Archie G-3-161521 | Oyster Bayou (Frio 2-8200) | Galveston | 1 | 0 | 747K | Dec 1996 – Jul 2026 |
| Turner, B. L. G-3-136723 | Hastings (M-10-A) | Brazoria | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Surface, R. O. G-3-56554 | Hastings (M-10-B) | Brazoria | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Grote, Emil G-3-112570 | Hastings (M-5) | Brazoria | 1 | 0 | 0 | Jan 1993 – Jul 2026 |