| Old Ocean Unit G-3-134202 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 293 | 837K | by Jan 1993 – Jul 1996 |
| Ramsey-State Prison Farm O-3-24675 | Bepco Operating Co. only | Chenango, North (Tex-Miss.) | Brazoria | 1 | 289 | 178 | Dec 2004 – Mar 2005 |
| Jackson, E. H., Tr.-A O-3-1102 | Terry, R. K. only | Damon Mound | Brazoria | 7 | 286 | 28 | by Jan 1993 – Nov 1998 |
| Old Ocean Unit G-3-300330 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 277 | 20.7K | Jul 2025 – Aug 2026 |
| Old Ocean Unit G-3-181869 | Hilcorp Energy Company only | Old Ocean (F-10) | Brazoria | 1 | 276 | 6.19K | Dec 2000 – Jul 2001 |
| Truksa G-3-152812 | Elliott Oil & Gas Company only | Chocolate Bayou, N. (10800) | Brazoria | 1 | 272 | 59.6K | Aug 1994 – Mar 1997 |
| Old Ocean Unit G-3-235567 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 269 | 10.8K | May 2008 – Oct 2008 |
| Vieman Unit G-3-232267 | Crawford Hughes Operating Co. only | Manor Lake (10,200) | Brazoria | 1 | 260 | 58.9K | Feb 2007 – Aug 2008 |
| Andrau G-3-162034 | Ultra Oil & Gas, Inc. only | Chocolate Bayou (Frio, First) | Brazoria | 1 | 259 | 14K | Feb 1997 – Jun 1997 |
| Wisdom, B.H. O-3-12430 | Terry Enterprises, Inc. only | Damon Mound | Brazoria | 1 | 258 | 12 | by Jan 1993 – May 1999 |
| Purcell, Thomas O-3-24345 | Noble Energy Inc only | Chocolate Bayou ( Freeman) | Brazoria | 1 | 255 | 1.43K | Oct 2002 – Apr 2003 |
| Robertson, J. B., Etal O-3-1097 | Shifflett, Norman E. only | Damon Mound | Brazoria | 3 | 248 | 13 | by Jan 1993 – Feb 1995 |
| Price, J. G-3-161874 | Elliott Oil & Gas Company only | Arcola (6600 Frio) | Brazoria | 1 | 247 | 37.3K | Sep 1996 – Dec 1997 |
| Bennett Estate G-3-208115 | Houston Petroleum Company only | Danbury Dome (5655 Sand) | Brazoria | 1 | 246 | 29.2K | Feb 2005 – May 2005 |
| Christian, Sarah J., Est. O-3-8331 | Finley Oil Company, LLC only | Chenango (8500 -a- Sd.) | Brazoria | 1 | 244 | 0 | Oct 2015 – Jan 2022 |
| Old Ocean Unit G-3-287599 | Hilcorp Energy Company only | Old Ocean (F-23) | Brazoria | 1 | 240 | 6.31K | Jun 2019 – Aug 2019 |
| Nowell, B.E. O-3-15302 | Contango Resources, LLC only | Manvel (F.bii. Oligocene -B) | Brazoria | 1 | 237 | 44 | by Jan 1993 – Oct 1996 |
| Old Ocean Unit G-3-42416 | Hilcorp Energy Company only | Old Ocean (Larsen) | Brazoria | 1 | 231 | 31.8K | by Jan 1993 – Jun 1993 |
| West Blue Lake Unit No. 1 O-3-11506 | Tomahawk Petroleum only | Blue Lake, W. (8350 FB-A) | Brazoria | 1 | 228 | 5 | by Jan 1993 – Oct 1993 |
| IP Farms (M) O-3-27743 | Elliott Oil & Gas Operating Co. only | Chocolate Bayou ( Frio Upper) | Brazoria | 1 | 222 | 1.04K | May 2020 – Jul 2024 |
| Hirsch O-3-5424 | NXL Oil, LLC only | Damon Mound | Brazoria | 1 | 221 | 23 | by Jan 1993 – Aug 2008 |
| Sharp Corporation O-3-13101 | Cavalier Oil & Gas, Inc. only | Arcola | Brazoria | 2 | 220 | 0 | Feb 1997 – Mar 1997 |
| Kirby Oil & Gas Fee O-3-4485 | Sideline Oil & Gas, L.P. only | West Columbia | Brazoria | 2 | 214 | 2 | Jul 1994 – Nov 2019 |
| Morrison, W. D. O-3-2933 | Texaco E & P Inc. only | Manvel (Miocene) | Brazoria | 3 | 213 | 4.11K | Mar 1993 – Sep 1993 |
| Old Ocean Unit G-3-180736 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 212 | 68.5K | Oct 2000 – May 2005 |
| Wisdom, I. S. -D- O-3-5098 | Terry Enterprises, Inc. only | Damon Mound | Brazoria | 2 | 211 | 8 | by Jan 1993 – Jan 1996 |
| Cannan, G. C. Unit G-3-122184 | Lapis Operating, Inc. only | Alvin, South (#43) | Brazoria | 1 | 209 | 54.4K | by Jan 1993 – Mar 2001 |
| Houston -L- G-3-5571 | Elliott Oil & Gas Company only | Chocolate Bayou ( Wieting Up.) | Brazoria | 1 | 206 | 27.4K | by Jan 1993 – May 2001 |
| Corbett Trust O-3-21992 | Shepperd, William M. only | Bonney, N. (Frio Upper) | Brazoria | 2 | 200 | 67 | by Jan 1993 – Aug 2001 |
| IP Farms G-3-152977 | Peregrine Energy, Inc. only | Chocolate Bayou (Andrau) | Brazoria | 1 | 190 | 80.9K | Jan 1995 – Aug 1995 |
| Old Ocean Unit G-3-167435 | Hilcorp Energy Company only | Old Ocean (F-10) | Brazoria | 1 | 189 | 788 | Sep 1996 – Nov 1996 |
| Wittjen, Gaddis et Al G-3-85276 | Magnum Producing & Operating Co. only | Four Corners (Helmuth A) | Brazoria | 1 | 178 | 13.8K | by Jan 1993 – Dec 1994 |
| Old Ocean Unit G-3-125504 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 171 | 219K | by Jan 1993 – Mar 1995 |
| Ramsey State Farm G-3-289941 | Cerberus Engineering, LLC only | Lochridge (K) | Brazoria | 1 | 169 | 195K | Aug 2020 – Sep 2023 |
| Oliver Unit G-3-49527 | Lucky Lad Energy, LLC only | Oliver (Frio 8750,E.) | Brazoria | 1 | 168 | 185 | Apr 2019 – Apr 2019 |
| Old Ocean Unit G-3-157745 | Hilcorp Energy Company only | Old Ocean (Campbell) | Brazoria | 1 | 165 | 100 | Aug 1996 – Aug 1996 |
| Old Ocean Unit G-3-47129 | Amoco Production Company only | Old Ocean (Larsen) | Brazoria | 1 | 164 | 64.6K | by Jan 1993 – Nov 1993 |
| Hubbard, Gilvie O-3-3586 | D.C. Energy only | Rowan | Brazoria | 2 | 164 | 7 | by Jan 1993 – Jan 1994 |
| Phillips, J. G. O/A G-3-155721 | Chevron U. S. A. Inc. only | West Columbia New | Brazoria | 1 | 162 | 56.7K | Sep 1995 – Oct 1995 |
| Rudy, Manuel G-3-173578 | Tristar Exploration, Inc only | Rowan, South (10,500) | Brazoria | 1 | 162 | 43K | Sep 1999 – Jan 2000 |
| Old Ocean Unit G-3-184697 | Hilcorp Energy Company only | Old Ocean (Larsen) | Brazoria | 1 | 159 | 118K | Jan 2001 – Aug 2005 |
| Poole O-3-28302 | Arcadia Operating, LLC only | Reasoner (12600) | Brazoria | 1 | 151 | 0 | Nov 2025 – Jul 2026 |
| Huffman, V. S. O-3-20843 | Derrick Oil & Gas, Inc. only | Arcola (6800 Sd.) | Brazoria | 1 | 151 | 197 | Mar 1993 – Mar 1993 |
| Warneke G-3-187552 | Opus Oil & Gas, L.P. only | Stratton Ridge, N. (Deep) | Brazoria | 1 | 149 | 230K | Oct 2001 – Jan 2003 |
| Thomas -B- O-3-4746 | Shifflett, Norman E. only | Damon Mound | Brazoria | 2 | 140 | 10 | by Jan 1993 – Jun 1994 |
| Darrington Unit O-3-24370 | Noble Energy Inc only | Nash Dome | Brazoria | 1 | 125 | 2.12K | Jun 2003 – Sep 2003 |
| Haynes, Marie B. Gdn. O-3-11206 | Bse Production Co. only | Chenango, West (8500 Sd.) | Brazoria | 1 | 123 | 0 | Jul 1999 – Jul 1999 |
| Wisdom, Belle O-3-5756 | Terry Enterprises, Inc. only | Damon Mound | Brazoria | 1 | 116 | 8 | by Jan 1993 – Dec 1998 |
| Borsodi G-3-152199 | Phillips Petroleum Company only | Chocolate Bayou ( Frio Upper) | Brazoria | 1 | 112 | 12.9K | Nov 1994 – Jan 1995 |
| Cannon Estate O-3-18353 | Stratco Operating Co., Inc. only | Bonney (7800 Frio) | Brazoria | 1 | 110 | 5 | May 1993 – Mar 1998 |