| Moore, Bobbie B. et Al G-3-201095 | Gcows Operating LLC only | Alvin, South (#51) | Brazoria | 1 | 2.06K | 334K | Dec 2003 – Jan 2022 |
| Sun Fee G-3-210123 | Texas Petroleum Investment Co. only | Oyster Creek (6620 Sand) | Brazoria | 1 | 2.03K | 710K | Apr 2005 – Apr 2007 |
| Old Ocean Unit G-3-69258 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 2.03K | 1.4M | by Jan 1993 – Aug 1998 |
| Cullen, Etal G-3-248401 | Duncan Oil, Inc. only | Lake Alaska (Frio 9240) | Brazoria | 1 | 2.02K | 145K | Feb 2009 – Aug 2009 |
| Beets - Dow G-3-173935 | Sawtooth Operating Co., Inc. only | Lake Jackson (Het) | Brazoria | 1 | 1.98K | 646K | Jan 1999 – Dec 2002 |
| Welch Foundation O-3-25681 | Linc Gulf Coast Petroleum, Inc. only | Hoskins Mound | Brazoria | 1 | 1.98K | 0 | Oct 2010 – Dec 2010 |
| Old Ocean Unit G-3-283832 | Hilcorp Energy Company only | Old Ocean (Larsen) | Brazoria | 1 | 1.98K | 87K | Sep 2017 – Aug 2026 |
| Niedringhaus G-3-123339 | Pameta Oil Company only | Bartman (11050 Sand) | Brazoria | 1 | 1.95K | 387K | by Jan 1993 – Apr 1997 |
| Munson Unit G-3-213143 | Timberwolf Energy, Inc. only | Angleton, South (12,100 Frio) | Brazoria | 1 | 1.95K | 422K | Dec 2004 – Mar 2008 |
| Huffman, V. S. O-3-23603 | Elliott Oil & Gas Operating Co. only | Arcola | Brazoria | 1 | 1.94K | 4.53K | Aug 1998 – Dec 1999 |
| Phillips, J. G. O/A G-3-154161 | Texaco E & P Inc. only | West Columbia New | Brazoria | 1 | 1.94K | 10.3K | May 1995 – Sep 1995 |
| H. Blackstone O-3-28084 | Cimarron Engineering, LLC only | Chocolate Bayou ( Alibel) | Brazoria | 1 | 1.9K | 41.7K | Apr 2023 – Dec 2023 |
| Turnbull et al /Wilson/ Unit O-3-418 | Prime Operating Company only | Blue Lake | Brazoria | 2 | 1.89K | 13 | by Jan 1993 – Jun 1994 |
| Clement, H. G-3-187509 | Elliott Oil & Gas Operating Co. only | Rowan (Frio 9500) | Brazoria | 1 | 1.88K | 101K | Nov 2001 – Apr 2004 |
| Andrau G-3-154539 | Elliott Oil & Gas Company only | Chocolate Bayou (Andrau) | Brazoria | 1 | 1.86K | 223K | Jul 1995 – Oct 1999 |
| Bernard River Land Development G-3-254091 | Sandel Operating Company only | Sweeney (Frio 11300 Sand) | Brazoria | 1 | 1.86K | 236K | Aug 2008 – Jun 2021 |
| Abrams, W. H. O-3-4492 | Chevron U. S. A. Inc. only | West Columbia | Brazoria | 6 | 1.84K | 283 | by Jan 1993 – Feb 1994 |
| Kopplin Gas Unit O-3-23532 | Transtexas Gas Corporation only | Danbury Dome (7625 Sand) | Brazoria | 1 | 1.83K | 36.3K | Jun 1998 – Apr 2000 |
| Cave, E.A. O-3-25668 | C & C Mining Inc. only | Damon Mound | Brazoria | 1 | 1.81K | 0 | Aug 2011 – Nov 2015 |
| Old Ocean Unit O-3-25493 | Hilcorp Energy Company only | Old Ocean, S. (Hellmuth 12,500) | Brazoria | 1 | 1.78K | 9.91K | Jan 2010 – Feb 2010 |
| Schmidt G-3-151155 | Engroup Resources, L.P. only | Danbury (Frio 6500) | Brazoria | 1 | 1.77K | 473K | Jul 1994 – Aug 1999 |
| Strunk G-3-199641 | Aspect Energy, LLC only | Baileys Prairie (Frio 10,500) | Brazoria | 1 | 1.76K | 240K | Feb 2004 – Nov 2004 |
| Norton Estate O-3-6751 | Sideline Oil & Gas, L.P. only | Damon Mound | Brazoria | 4 | 1.74K | 20 | by Jan 1993 – Aug 2008 |
| Hogg, Ima, Plantation O-3-10951 | Magnum Engineering Company only | West Columbia | Brazoria | 3 | 1.7K | 13 | by Jan 1993 – May 1994 |
| Griffith, et Al O-3-20292 | Sonterra Oil & Gas, Inc. only | Griffith-Hawes (Tysor 8400) | Brazoria | 1 | 1.7K | 13.3K | Jan 1995 – Nov 1995 |
| Huffman, V. S. G-3-160008 | Howard Exploration, Inc. only | Arcola (7400 Frio) | Brazoria | 1 | 1.7K | 54.1K | Jul 1996 – Feb 1997 |
| Farrer-Minchen Oil Unit O-3-9989 | Tomahawk Petroleum only | Blue Lake, W. (8350 FB-A) | Brazoria | 1 | 1.69K | 8 | by Jan 1993 – Feb 1994 |
| Gardiner O-3-8119 | Elliott Oil Company, L.P. only | Chocolate Bayou,se.(weiting,lo.) | Brazoria | 1 | 1.66K | 7.88K | Jun 1993 – Aug 1994 |
| Pledger Gas Field Unit G-3-7890 | Texas Petroleum Investment Co. only | Pledger (Frio 6500-6800) | Brazoria | 1 | 1.65K | 867K | by Jan 1993 – Feb 1996 |
| Miller G-3-280758 | XOG Resources, LLC only | Chocolate Bayou ( Schenck) | Brazoria | 1 | 1.64K | 46.1K | May 2016 – Jul 2016 |
| Brockman, J. C. et Al O-3-23034 | Hilcorp Energy Company only | Old Ocean (12,100) | Brazoria | 1 | 1.64K | 97.2K | Jul 1996 – Jan 2000 |
| Korenek G-3-165087 | Houston Petroleum Company only | Danbury Dome (8500) | Brazoria | 1 | 1.63K | 76.7K | Sep 1997 – Feb 2000 |
| Mobil Fee O-3-20812 | Whiting Petroleum Corporation only | Lochridge | Brazoria | 1 | 1.62K | 1.68K | by Jan 1993 – Aug 1996 |
| Stanger, D. G-3-258508 | Slawson Exploration Company, Inc only | Old Ocean, East (10500) | Brazoria | 1 | 1.62K | 251K | May 2010 – May 2012 |
| Price, J. E., Jr., et Al O-3-24288 | Keene, Roy J. Jr. only | Danbury Dome (5655 Sand) | Brazoria | 1 | 1.62K | 25 | Aug 2002 – Nov 2003 |
| Old Ocean Unit G-3-182410 | Hilcorp Energy Company only | Old Ocean (F-4) | Brazoria | 1 | 1.58K | 37.3K | Mar 2001 – Feb 2004 |
| Stevens G-3-233025 | Shidler, Mark L., Inc. only | Manor Lake, East (Frio 9800) | Brazoria | 1 | 1.58K | 228K | Aug 2007 – Jan 2011 |
| Huffman, V.S. O-3-15389 | Derrick Oil & Gas, Inc. only | Arcola (Huffman) | Brazoria | 1 | 1.58K | 9 | by Jan 1993 – Nov 1993 |
| Wieting Gas Unit G-3-282042 | White Marlin Operating Co, LLC only | Chocolate Bayou ( Rycade) | Brazoria | 1 | 1.58K | 46.8K | Nov 2016 – Apr 2017 |
| Moller G-3-216958 | Zachry Exploration, Ltd. only | Danbury Dome (5655 Sand) | Brazoria | 1 | 1.58K | 36K | Jan 2006 – Jun 2006 |
| I. P. Farms G-3-163242 | Peregrine Energy, Inc. only | Chocolate Bayou (11050) | Brazoria | 1 | 1.55K | 94.3K | Mar 1997 – Jun 1997 |
| Alvin Gas Unit G-3-254377 | Dune Operating Company only | Alvin City (10,400 Frio) | Brazoria | 1 | 1.54K | 384K | Dec 2009 – Jan 2012 |
| Banfield G-3-176607 | Howard Exploration, Inc. only | Chocolate Bayou ( Ho.fms. UP) | Brazoria | 1 | 1.54K | 512K | Jun 1999 – Apr 2011 |
| Jackson, E. H., Tr.-A O-3-1122 | Terry, R. K. only | Damon Mound, East (FLT BLK 1) | Brazoria | 5 | 1.48K | 29 | by Jan 1993 – Jan 1998 |
| Old Ocean Unit G-3-44483 | Amoco Production Company only | Old Ocean (Larsen) | Brazoria | 1 | 1.48K | 299K | by Jan 1993 – Nov 1995 |
| Wieting, A. M. G.U. O/A G-3-150265 | Texaco E & P Inc. only | Chocolate Bayou (IP) | Brazoria | 1 | 1.47K | 56.7K | May 1994 – Jun 1994 |
| Huffman, V.S. O-3-22400 | Elliott Oil & Gas Operating Co. only | Arcola (7220) | Brazoria | 1 | 1.45K | 4 | May 1994 – Apr 1995 |
| Bennett G-3-168883 | Transtexas Gas Corporation only | Danbury (Frio #6-D 8600) | Brazoria | 1 | 1.44K | 133K | May 1998 – Feb 1999 |
| Wieting Gas Unit G-3-283518 | White Marlin Operating Co, LLC only | Chocolate Bayou ( Freeman) | Brazoria | 1 | 1.42K | 55.1K | Apr 2017 – Mar 2023 |
| Pledger Gas Field Unit G-3-7874 | Texas Petroleum Investment Co. only | Pledger (Frio 6500-6800) | Brazoria | 1 | 1.42K | 487K | by Jan 1993 – Jul 2004 |