| West Hasting Unit O-3-19054 | Hastings, West | Brazoria | 566 | 45M | 14.1M | Jan 1993 – Apr 2026 |
| Oyster Bayou Field Unit O-3-25515 | Oyster Bayou | Chambers | 102 | 23.1M | 2.94K | Jun 2010 – Apr 2026 |
| Turner, B. L. O-3-5623 | Hastings, East | Brazoria | 28 | 899K | 944K | Jan 1993 – Apr 2026 |
| Ford, H. H. R/a -A- O-3-5614 | Hastings, East | Brazoria | 6 | 722K | 552K | Jan 1993 – Apr 2026 |
| Surface, R. O. O-3-5622 | Hastings, East | Brazoria | 2 | 678K | 612K | Jan 1993 – Apr 2026 |
| HCL O-3-26729 | Hastings, West | Brazoria | 3 | 675K | 0 | May 2014 – Apr 2026 |
| Schaefer, Annie S. O-3-5618 | Hastings, East | Brazoria | 1 | 297K | 88.3K | Jan 1993 – Apr 2026 |
| Miller, Wm. J., Estate O-3-5616 | Hastings, East | Brazoria | 3 | 193K | 362K | Jan 1993 – Apr 2026 |
| Kidd, Margaret O-3-5615 | Hastings, East | Brazoria | 8 | 179K | 269K | Jan 1993 – Apr 2026 |
| Sneed, Gilbert O-3-5619 | Hastings, East | Brazoria | 8 | 159K | 187K | Feb 2006 – Apr 2026 |
| Colby, E. H. O-3-8768 | Manvel (4970) | Brazoria | 4 | 913K | 1.52M | Jan 1993 – Nov 2025 |
| H. O. F. A. O-3-10399 | Manvel (F.B. II, Oligocene) | Brazoria | 18 | 707K | 1.46M | Jan 1993 – Nov 2025 |
| Lemmer, J. L. O-3-7852 | Manvel, E. (Oakville #3) | Brazoria | 3 | 437K | 301K | Jan 1993 – Nov 2025 |
| Way, H. J. -B- O-3-2935 | Manvel (Miocene) | Brazoria | 3 | 179K | 506K | Jan 1993 – Nov 2025 |
| Belcher, W. T. -A- O-3-2926 | Manvel (Miocene) | Brazoria | 11 | 164K | 491K | Jan 1993 – Nov 2025 |
| Way, H. J., -A- O-3-9174 | Manvel (4970) | Brazoria | 1 | 162K | 658K | Jan 1993 – Nov 2025 |
| Dawson, L. C. O-3-10398 | Manvel (F.B. II, Oligocene) | Brazoria | 2 | 150K | 690K | Jan 1993 – Nov 2025 |
| Belcher, W. T. "B" O-3-10386 | Manvel (F.B. I, Oligocene) | Brazoria | 37 | 1.6M | 4.04M | Jan 1993 – Sep 2025 |
| Colby, E.H. et Al O-3-18825 | Manvel (Oligocene) | Brazoria | 1 | 194K | 423K | Jan 1993 – Aug 2025 |
| Williams, H. G. B O-3-27834 | Hastings, East | Brazoria | 1 | 5.93K | 15.2K | Oct 2020 – Mar 2024 |
| H. O. F. A. B O-3-27957 | Manvel (F.B. II, Oligocene) | Brazoria | 1 | 31.6K | 5.84K | Dec 2021 – Dec 2023 |
| Belcher, W. T. -A- O-3-10796 | Manvel (FB-III, Oligocene Seg A) | Brazoria | 7 | 153K | 299K | Jan 1993 – Oct 2021 |
| Belcher, W. T., "A" O-3-10259 | Manvel (FB-III, Oligocene) | Brazoria | 7 | 256K | 586K | Jan 1993 – Sep 2021 |
| Massey O-3-20261 | Manvel, E. (Miocene 3300) | Brazoria | 6 | 90.9K | 2.97K | Jan 1993 – Aug 2020 |
| Lemmer, J. O-3-23233 | Manvel (F.B. II, Oligocene) | Brazoria | 2 | 532K | 1.31M | Feb 1997 – Jun 2019 |
| Davis, J. H. P. O-3-25828 | Thompson | Fort Bend | 1 | 51 | 6.37K | Aug 2017 – Jun 2018 |
| Gubbels, M. Etal -A- O-3-4104 | Thompson | Fort Bend | 3 | 57.5K | 79.6K | Jan 1993 – Nov 2015 |
| Lewellyn, Nellie O-3-10394 | Manvel (F.B. II, Oligocene) | Brazoria | 2 | 213K | 133K | Jan 1993 – Aug 2015 |
| Gubbels, M. Etal -A- O-3-4160 | Thompson (Vicksburg) | Fort Bend | 2 | 119K | 352K | Jan 1993 – May 2015 |
| Sneed, Hattie O-3-5620 | Hastings, East | Brazoria | 3 | 18.3K | 49.7K | Jun 2006 – Jun 2014 |
| H. O. F. A. O-3-24352 | Manvel (4000) | Brazoria | 1 | 75K | 118K | May 2003 – May 2014 |
| Blount, C. H., Etux O-3-5610 | Hastings, East | Brazoria | 5 | 69.7K | 87.4K | Jan 1993 – Apr 2014 |
| Halligan, O. M. O-3-23364 | Manvel (Miocene 3900) | Brazoria | 1 | 66.6K | 8.68K | Sep 1997 – Sep 2013 |
| Hofa NCT-1 O-3-16731 | Manvel (Miocene 3300) | Brazoria | 1 | 61.9K | 44.7K | Jan 1993 – Mar 2013 |
| Belcher, W.T. "B" O-3-22726 | Manvel (Miocene) | Brazoria | 2 | 70.4K | 67.5K | Nov 2002 – Feb 2013 |
| Surface, J. W. O-3-5621 | Hastings, East | Brazoria | 4 | 9.81K | 329 | Sep 2006 – Apr 2012 |
| Barrow Ranch O-3-24156 | Barrow Ranch (Nod. 1) | Chambers | 2 | 802K | 1.18M | Apr 2002 – Jun 2011 |
| H. O. F. A. NCT-1 O-3-22688 | Manvel (Miocene) | Brazoria | 3 | 92.6K | 109K | Apr 1995 – Dec 2010 |
| Jackson, Felix, et Al O-3-3312 | Oyster Bayou | Chambers | 61 | 2.67M | 15.6M | Jan 1993 – May 2010 |
| Belcher B57 Unit O-3-23589 | Manvel (Oligocene, Frio D) | Brazoria | 1 | 191K | 131K | Aug 1998 – May 2010 |
| Blanke-Acom Unit O-3-24704 | Fig Ridge,nw (Discorbis) | Chambers | 1 | 12.9K | 31.3K | Apr 2005 – Jan 2010 |
| Belcher, W.T. "A" O-3-23157 | Manvel (Miocene 3600) | Brazoria | 1 | 33.2K | 66.1K | Oct 1996 – May 2009 |
| Colby, E. H. Etal O-3-2923 | Manvel (Miocene) | Brazoria | 6 | 53.3K | 20.2K | Jan 1993 – Apr 2009 |
| Acom Seabreeze Unit O-3-24565 | Seabreeze | Chambers | 1 | 85.5K | 313K | May 2004 – Jan 2009 |
| Madeley, AA & Da O-3-24498 | Conroe (Cons. U) | Montgomery | 1 | 7.21K | 3.45K | Jan 2004 – Jan 2007 |
| Stewart, Maco "A" O-3-23251 | Gillock | Galveston | 2 | 0 | 986 | Oct 2004 – Dec 2004 |
| Randall-Whiton Miocene Unit O-3-22390 | Hastings (M-14-A) | Brazoria | 1 | 61.9K | 85.5K | Apr 1994 – Nov 2003 |
| Middleton, Archie O-3-3313 | Oyster Bayou | Chambers | 12 | 104K | 1.23M | Jan 1993 – Oct 2003 |
| Belcher B58 Unit O-3-23588 | Manvel (Oligocene, Frio D) | Brazoria | 1 | 46.1K | 32.2K | Aug 1998 – Mar 2003 |
| Gubbels-Hamerstrom Unit O-3-21284 | Thompson (Vicksburg Seg 5) | Fort Bend | 1 | 94.5K | 322K | Jan 1993 – Feb 2001 |