| Kirby Pet. Co. -B- O-3-194 | Barbers Hill | Chambers | 15 | 1.44M | 29.3K | Jan 1993 – Jul 2026 |
| Fitzgerald "A" O-3-21245 | Barbers Hill | Chambers | 6 | 718K | 10 | Jan 1993 – Jul 2026 |
| Fitzgerald, L. E. Unit #1 O-3-191 | Barbers Hill | Chambers | 10 | 694K | 61 | Jan 1993 – Jul 2026 |
| Moody Estate Trustee O-3-21166 | Sweetwater Lake (S-1) | Galveston | 2 | 492K | 186K | Jan 1993 – Jul 2026 |
| Chambers County Agr. Co. O-3-170 | Barbers Hill | Chambers | 19 | 484K | 21 | Jan 1993 – Jul 2026 |
| Higgins O-3-175 | Barbers Hill | Chambers | 17 | 484K | 20 | Jan 1993 – Jul 2026 |
| Wilburn, J. -A- O-3-164 | Barbers Hill | Chambers | 7 | 430K | 54 | Jan 1993 – Jul 2026 |
| Cade, E. Ker -a- R/a -A- O-3-2103 | High Island | Galveston | 16 | 377K | 239K | Jan 1993 – Jul 2026 |
| Wilburn, J. O-3-177 | Barbers Hill | Chambers | 9 | 350K | 20 | Jan 1993 – Jul 2026 |
| Brown, J.M. O-3-26009 | Barbers Hill | Chambers | 2 | 347K | 0 | Feb 2012 – Jul 2026 |
| Wilburn "D" O-3-144 | Barbers Hill | Chambers | 5 | 291K | 0 | Jan 1993 – Jul 2026 |
| Cade, E. Ker -a- R/a -C- O-3-2105 | High Island | Galveston | 5 | 284K | 47.9K | Jan 1993 – Jul 2026 |
| Kirby Pet. Co. -C- O-3-195 | Barbers Hill | Chambers | 2 | 258K | 54 | Jan 1993 – Jul 2026 |
| Welch Foundation O-3-25045 | Hoskins Mound | Brazoria | 19 | 256K | 100K | Jun 2006 – Jul 2026 |
| Conoco Unit O-3-193 | Barbers Hill | Chambers | 7 | 252K | 49 | Jan 1993 – Jul 2026 |
| McNeill "B" O-3-12346 | High Island | Galveston | 3 | 228K | 51 | Jan 1993 – Jul 2026 |
| Smith, George E. -B- R/a -A- O-3-2119 | High Island | Galveston | 7 | 201K | 4.82K | Jan 1993 – Jul 2026 |
| Kirby Pet. Co. 15 Ac. O-3-142 | Barbers Hill | Chambers | 3 | 169K | 20 | Jan 1993 – Jul 2026 |
| Smith, George E. -a- R/a -A- O-3-2117 | High Island | Galveston | 6 | 165K | 336 | Jan 1993 – Jul 2026 |
| Moody Unit O-3-23833 | Aquarium (S-1) | Galveston | 1 | 158K | 104K | Feb 2000 – Jul 2026 |
| Barber, A. E. O-3-187 | Barbers Hill | Chambers | 7 | 141K | 60 | Jan 1993 – Jul 2026 |
| Gulf Fee Fisher-23.5 O-3-141 | Barbers Hill | Chambers | 5 | 138K | 20 | Jan 1993 – Jul 2026 |
| Gulf Interstate Fee "A" O-3-14334 | High Island | Galveston | 2 | 118K | 18.1K | Jan 1993 – Jul 2026 |
| M Winfree Heirs O-3-26171 | Barbers Hill | Chambers | 2 | 112K | 0 | Feb 2013 – Jul 2026 |
| Kirby Pet. Co. O-3-156 | Barbers Hill | Chambers | 4 | 112K | 35 | Jan 1993 – Jul 2026 |
| Wilburn "C" #10 O-3-146 | Barbers Hill | Chambers | 1 | 112K | 20 | Jan 1993 – Jul 2026 |
| Wilburn, J.F. "B" O-3-198 | Barbers Hill | Chambers | 9 | 106K | 20 | Jan 1993 – Jul 2026 |
| McNeill "A" O-3-12608 | High Island | Galveston | 4 | 99.8K | 49 | Jan 1993 – Jul 2026 |
| Wilburn "C" #9 O-3-145 | Barbers Hill | Chambers | 3 | 98.4K | 1 | Jan 1993 – Jul 2026 |
| Caffery, Taylor O-3-24495 | High Island | Galveston | 1 | 94.7K | 0 | Jan 2004 – Jul 2026 |
| Overton Cade O-3-24335 | High Island | Galveston | 1 | 89.6K | 0 | Mar 2003 – Jul 2026 |
| T.S. Fitzgerald Heirs O-3-26381 | Barbers Hill | Chambers | 1 | 88.6K | 0 | Aug 2013 – Jul 2026 |
| McLean, Marrs D O-3-25028 | High Island | Galveston | 1 | 81.1K | 0 | Mar 2007 – Jul 2026 |
| League, Nellie B. Etal O-3-2112 | High Island | Galveston | 5 | 81.1K | 408 | Jan 1993 – Jul 2026 |
| Smith, Charlotte E. R/a -A- O-3-2115 | High Island | Galveston | 2 | 76.1K | 14.5K | Jan 1993 – Jul 2026 |
| Higgins -B- O-3-162 | Barbers Hill | — | 4 | 73.6K | 1.22K | Jan 1993 – Jul 2026 |
| Cade, Taylor O-3-24329 | High Island | Galveston | 2 | 72.4K | 0 | Feb 2003 – Jul 2026 |
| Barker O-3-24691 | High Island | Galveston | 2 | 68.8K | 0 | May 2004 – Jul 2026 |
| Cade, E. Ker, -a- R/a -G- O-3-7138 | High Island | Galveston | 3 | 67.4K | 79.1K | Jan 1993 – Jul 2026 |
| Fitzgerald O-3-19656 | Barbers Hill | Chambers | 2 | 48.7K | 10 | Jan 1993 – Jul 2026 |
| Smith, George E., -B- R/a -B- O-3-6257 | High Island | Galveston | 3 | 47.7K | 368 | Jan 1993 – Jul 2026 |
| E.C. Kerley O-3-26070 | Barbers Hill | Chambers | 2 | 40.6K | 0 | Apr 2012 – Jul 2026 |
| Wilburn "E" O-3-163 | Barbers Hill | Chambers | 5 | 38.9K | 20 | Jan 1993 – Jul 2026 |
| Barber, E. W., -D- O-3-181 | Barbers Hill | Chambers | 3 | 35.4K | 35 | Jan 1993 – Jul 2026 |
| Marrs McLean "G" O-3-25116 | High Island | Galveston | 1 | 30.6K | 0 | Oct 2007 – Jul 2026 |
| McLean, Marrs "a" R/a "D" O-3-12719 | High Island | Galveston | 2 | 28.2K | 6.21K | Jan 1993 – Jul 2026 |
| Fitzgerald, J. M. O-3-190 | Barbers Hill | Chambers | 4 | 25.2K | 15 | Jan 1993 – Jul 2026 |
| Cade Heirs O-3-24401 | High Island | Galveston | 1 | 21.2K | 0 | Jun 2003 – Jul 2026 |
| Moody Estate O-3-17751 | Sweetwater Lake (Miocene D-5) | Galveston | 1 | 18.9K | 29.4K | Jan 1993 – Jul 2026 |
| Gulf Fee /Monongahela/ O-3-159 | Barbers Hill | Chambers | 2 | 17.5K | 35 | Jan 1993 – Jul 2026 |