| Rogers, Blanche O-3-10059 | Kaiser-Francis Oil Company only | Manvel, E. (Miocene 3300) | Brazoria | 2 | 8.63K | 21 | by Jan 1993 – Apr 1999 |
| Vieman G-3-135916 | EOG Resources, Inc. only | Manor Lake (10600) | Brazoria | 1 | 8.6K | 1.99M | by Jan 1993 – May 2004 |
| Bennett Estate G-3-212366 | HG Operating LLC only | Danbury Dome (5655 Sand) | Brazoria | 1 | 8.59K | 1.09M | Oct 2005 – Apr 2020 |
| Old Ocean Unit G-3-269965 | Hilcorp Energy Company only | Old Ocean (Larsen) | Brazoria | 1 | 8.42K | 377K | Mar 2013 – Jul 2025 |
| Caldwell, J. H. O-3-2530 | BLS Resources, Inc. only | Juliff (Caldwell Sand) | Brazoria | 1 | 8.37K | 25 | by Jan 1993 – Dec 1996 |
| Farms, I. P. G-3-177691 | Rutherford Oil Corporation only | Chocolate Bayou, S. (Uhf Frio) | Brazoria | 1 | 8.29K | 135K | Mar 2000 – Feb 2002 |
| Old Ocean Unit G-3-250535 | Hilcorp Energy Company only | Old Ocean, S. (Hellmuth 12,500) | Brazoria | 1 | 8.27K | 126K | Jun 2009 – Jan 2010 |
| Renn, Philip et Al G-3-140389 | Apache Corporation only | Danbury, SW. (Anomalina D) | Brazoria | 1 | 8.2K | 1.2M | by Jan 1993 – Dec 1997 |
| Urban Unit G-3-212785 | Zachry Exploration, Ltd. only | Danbury Dome (5655 Sand) | Brazoria | 1 | 8.17K | 247K | Aug 2005 – Jun 2006 |
| Wilson, R. K. G. U. No. 1 G-3-141214 | Texaco E & P Inc. only | Chocolate Bayou (Andrau) | Brazoria | 1 | 8.03K | 930K | by Jan 1993 – Feb 1995 |
| Old Ocean Unit G-3-269186 | Hilcorp Energy Company only | Old Ocean (F-24) | Brazoria | 1 | 8.01K | 299K | Jul 2012 – Aug 2026 |
| Old Ocean Unit O-3-3213 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 32 | 7.96K | 222K | by Jan 1993 – Feb 2008 |
| Houston Farms Development Co. G-3-5607 | Chaparral Energy, L.L.C. only | Chocolate Bayou, S. (P Frio) | Brazoria | 1 | 7.94K | 459K | by Jan 1993 – Apr 2007 |
| Patton G-3-182452 | Sandel Operating Company only | Old Ocean (Campbell) | Brazoria | 1 | 7.89K | 1.16M | Mar 2001 – Feb 2009 |
| Rainwater G-3-190948 | Hilcorp Energy Company only | Alvin, South (#51) | Brazoria | 1 | 7.76K | 3.16M | Sep 2002 – Mar 2015 |
| Old Ocean Unit G-3-47200 | Hilcorp Energy Company only | Old Ocean (Larsen) | Brazoria | 1 | 7.71K | 1.62M | by Jan 1993 – Jun 2000 |
| Groce, Kittie Nash O-3-9371 | Harrison Interests, Ltd. only | Nash Dome | Brazoria | 2 | 7.69K | 1.75K | by Jan 1993 – Sep 2000 |
| Farms, I. P. G-3-145816 | Proline Energy Resources Inc only | Chocolate Bayou ( Wieting Up.) | Brazoria | 1 | 7.64K | 312K | by Jan 1993 – Jul 2008 |
| Darrington Unit G-3-177431 | Samedan Oil Corporation only | Cow Lake (Frio) | Brazoria | 1 | 7.61K | 964K | Apr 2000 – Sep 2002 |
| Farms, I. P. O-3-23129 | Proline Energy Resources Inc only | Chocolate Bayou (Lower Schenk) | Brazoria | 1 | 7.54K | 61.7K | Sep 1996 – Aug 2001 |
| Burns G-3-189756 | Marwell Petroleum Ltd Partnrship only | Oliver, South (10300) | Brazoria | 1 | 7.53K | 2.49M | Jun 2002 – Sep 2022 |
| Gewil G-3-5567 | Elliott Oil & Gas Operating Co. only | Chocolate Bayou ( Wieting Up.) | Brazoria | 1 | 7.52K | 1.59M | by Jan 1993 – Mar 2012 |
| Old Ocean Unit G-3-138192 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 7.42K | 2.29M | by Jan 1993 – Sep 2001 |
| Williamson Trust G-3-205881 | Noble Energy Inc only | Blue Lake (10500) | Brazoria | 1 | 7.41K | 1.42M | Aug 2004 – Jan 2008 |
| State of Texas No. 49829 Tr. 5 G-3-162627 | Rutherford Oil Corporation only | Clemens, N. (Frio C) | Brazoria | 1 | 7.41K | 2.13M | Mar 1997 – Jun 2002 |
| State Tract 21 G-3-272065 | Fourth Floor Operating LLC only | Alligator Point (Miocene 6150) | Brazoria | 1 | 7.34K | 296K | Apr 2013 – May 2018 |
| Triangle G-3-234433 | Noble Energy Inc only | Chocolate Bayou ( Ho.fms. UP) | Brazoria | 1 | 7.33K | 349K | Aug 2007 – Oct 2008 |
| Houston Farms Development Co. G-3-5608 | Chaparral Energy, L.L.C. only | Chocolate Bayou, S. (P Frio) | Brazoria | 1 | 7.31K | 565K | by Jan 1993 – Nov 2009 |
| Old Ocean Unit G-3-151977 | Hilcorp Energy Company only | Old Ocean (F- 8) | Brazoria | 1 | 7.3K | 267K | Sep 1994 – Sep 1997 |
| Norton Estate O-3-18130 | Boling Production Company, Inc. only | Ralph Cantrell (Frio) | Brazoria | 1 | 7.23K | 15 | by Jan 1993 – May 2016 |
| Old Ocean Unit G-3-44927 | Hilcorp Energy Company only | Old Ocean (Larsen) | Brazoria | 1 | 7.22K | 3.2M | by Jan 1993 – Mar 2000 |
| Houston "CC" G-3-155416 | Elliott Oil & Gas Operating Co. only | Chocolate Bayou (Andrau) | Brazoria | 1 | 7.22K | 472K | Aug 1995 – Jul 2021 |
| Bennett G-3-172650 | Transtexas Gas Corporation only | Danbury (Frio #6-A) | Brazoria | 1 | 7.15K | 646K | Apr 1999 – Aug 2000 |
| Old Ocean Unit G-3-7593 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 7.11K | 1.31M | by Jan 1993 – Nov 1998 |
| Renn Gas Unit G-3-173350 | Brigham Oil & Gas, L.P. only | Danbury, SW. (Frio Lower 12550) | Brazoria | 1 | 7.1K | 2.22M | May 1999 – May 2006 |
| Chernosky O-3-7301 | Sideline Oil & Gas, L.P. only | Damon Mound | Brazoria | 1 | 7.06K | 21 | by Jan 1993 – Aug 2026 |
| Korenek G-3-156065 | Zachry Exploration, Inc. only | Danbury Dome* | Brazoria | 1 | 6.96K | 580K | Nov 1995 – Apr 2000 |
| H. O. F. A. O-3-2929 | Denbury Onshore, LLC only | Manvel (Miocene) | Brazoria | 17 | 6.93K | 21.4K | Jun 1995 – Jan 1999 |
| Houston "M" G-3-138425 | Howard Exploration, Inc. only | Chocolate Bayou, N. (Schenck) | Brazoria | 1 | 6.81K | 255K | by Jan 1993 – Jun 1994 |
| Hemus-Braden Unit O-3-21597 | Global Natural Resources Corp. only | Chenango, East (9900 Frio) | Brazoria | 1 | 6.71K | 22.1K | by Jan 1993 – Apr 1994 |
| Winscott Unit G-3-291969 | Bluestem Natural Gas LLC only | Four Corners (13000) | Brazoria | 1 | 6.68K | 1.17M | Aug 2021 – Aug 2026 |
| Buller G-3-183691 | Samedan Oil Corporation only | Old Ocean, W. (8900) | Brazoria | 1 | 6.62K | 512K | Jun 2001 – Jul 2002 |
| Wilson, R. K. -A- O-3-655 | Dune Operating Company only | Chocolate Bayou ( Alibel) | Brazoria | 3 | 6.57K | 5.33K | by Jan 1993 – Jul 1994 |
| Young Unit O-3-19986 | Cavalier Oil & Gas, Inc. only | Rowan, N. (Frio, Upper 9600) | Brazoria | 1 | 6.38K | 0 | Feb 1995 – May 1997 |
| Switzer Trust G-3-211966 | Noble Energy Inc only | Blue Lake (11,000) | Brazoria | 1 | 6.36K | 573K | Sep 2005 – Jan 2007 |
| Williamson-Retrieve Unit No. 1 G-3-173119 | Timberwolf Energy, Inc. only | Angleton, South (F-9 Block D) | Brazoria | 1 | 6.31K | 739K | Mar 1999 – Aug 2026 |
| Old Ocean Unit G-3-204711 | Hilcorp Energy Company only | Old Ocean, S. (Hellmuth 12,500) | Brazoria | 1 | 6.24K | 118K | Oct 2004 – Dec 2005 |
| Old Ocean Unit G-3-49722 | Hilcorp Energy Company only | Old Ocean (Larsen) | Brazoria | 1 | 6.2K | 1.36M | Nov 1993 – Jul 2001 |
| Old Ocean Unit G-3-179418 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 6.1K | 397K | Sep 2000 – Jul 2003 |
| Crowell G-3-233353 | Slawson Exploration Company, Inc only | Old Ocean, NE. (10800) | Brazoria | 1 | 6.08K | 1.16M | Nov 2007 – May 2015 |