| Gibson, K. M. O-3-23906 | K. O. C. Corporation only | Lochridge | Brazoria | 1 | 14.8K | 15K | Oct 2000 – Apr 2011 |
| Old G-3-265559 | XOG Resources, LLC only | Chocolate Bayou ( Wieting Lo.) | Brazoria | 1 | 14.7K | 457K | Apr 2012 – Sep 2015 |
| South Texas Water Co. O-3-7101 | Palmer Petroleum Inc. only | Bonney, N. (Frio 7660) | Brazoria | 1 | 14.7K | 6.24K | by Jan 1993 – Feb 1996 |
| Old Ocean Unit G-3-117813 | Hilcorp Energy Company only | Old Ocean (Campbell) | Brazoria | 1 | 14.5K | 1.74M | by Jan 1993 – Sep 1999 |
| Texasgulf, Inc. Fee Unit G-3-92114 | Texas Independent Explor., Inc. only | Old Ocean North (9750) | Brazoria | 1 | 14.5K | 516K | by Jan 1993 – Jul 1995 |
| Houston "A" G-3-145127 | Elliott Oil & Gas Company only | Chocolate Bayou, N. (Andrau) | Brazoria | 1 | 14.4K | 2.25M | Apr 1993 – Nov 1999 |
| Powell O-3-26445 | Houston Energy Operating, L.P. only | Chenango (9100) | Brazoria | 1 | 14.3K | 158K | Dec 2012 – Jun 2014 |
| Old Ocean Unit G-3-200488 | Hilcorp Energy Company only | Old Ocean (Larsen) | Brazoria | 1 | 14.3K | 800K | Oct 2003 – Dec 2007 |
| State Lease 66709 G-3-154600 | LTS Oil & Gas only | Rattlesnake Mound (7000) | Brazoria | 1 | 14.3K | 2.32M | May 1995 – Nov 2001 |
| Andrau G-3-175826 | Elliott Oil & Gas Operating Co. only | Chocolate Bayou ( Frio P) | Brazoria | 1 | 14.3K | 950K | Nov 1999 – Apr 2014 |
| Old Ocean Unit G-3-137150 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 14.2K | 1.99M | by Jan 1993 – Apr 1998 |
| Hogg, W. C. NCT-5 O-3-4497 | Chevron U. S. A. Inc. only | West Columbia | Brazoria | 10 | 14.1K | 2.83K | by Jan 1993 – Mar 1998 |
| Old Ocean Unit G-3-158180 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 14.1K | 592K | Jul 1995 – Jan 2000 |
| Blakely, et Al O-3-24433 | HG Operating LLC only | Danbury Dome | Brazoria | 2 | 14K | 38.5K | Mar 2004 – Mar 2026 |
| Fite O-3-24316 | Halex Oil Corporation only | Sandy Point | Brazoria | 1 | 13.9K | 1.5K | Aug 2002 – Oct 2013 |
| Wieting, A. M. Gas Unit O/A G-3-162719 | White Marlin Operating Co, LLC only | Chocolate Bayou ( Ho.fms. UP) | Brazoria | 1 | 13.8K | 637K | Apr 1997 – Nov 2005 |
| G. W. Norton O-3-25206 | Boling Production Company, Inc. only | Damon Mound | Brazoria | 1 | 13.8K | 0 | Aug 2008 – Apr 2019 |
| Phillips, J. G. O/A G-3-154728 | Texaco E & P Inc. only | West Columbia New | Brazoria | 1 | 13.4K | 54.4K | May 1995 – Mar 1996 |
| Black Stone Ivory EE G-3-256336 | Elliott Oil & Gas Operating Co. only | Chocolate Bayou (11050) | Brazoria | 1 | 13K | 330K | Apr 2010 – May 2021 |
| Plummer O-3-22438 | Gaither Petroleum Corporation only | Chocolate Bayou | Brazoria | 1 | 13K | 8.54K | Apr 1994 – May 1996 |
| Reynolds Gas Unit "A" G-3-185601 | Sandel Operating Company only | Sweeney (11,250) | Brazoria | 1 | 13K | 1.2M | Aug 2001 – Aug 2010 |
| I.P. Farms Stan A O-3-23978 | Elliott Oil Company, L.P. only | Chocolate Bayou ( Freeman) | Brazoria | 1 | 13K | 4.71K | Mar 2001 – Apr 2023 |
| Old Ocean Unit G-3-239810 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 13K | 416K | Jul 2008 – Jan 2020 |
| Old Ocean Unit G-3-46825 | Hilcorp Energy Company only | Old Ocean (Larsen) | Brazoria | 1 | 12.9K | 716K | by Jan 1993 – Jul 2004 |
| Blakely, Bassett, Etal -D- O-3-1125 | HG Operating LLC only | Danbury Dome | Brazoria | 13 | 12.9K | 974 | by Jan 1993 – Aug 1997 |
| Wieting, A.M. Gas Unit O/A G-3-51699 | Texaco E & P Inc. only | Chocolate Bayou ( Wieting Up.) | Brazoria | 1 | 12.7K | 1.4M | by Jan 1993 – Nov 1995 |
| Graham, J. M. et Al G-3-147225 | Magnum Producing, LP only | Four Corners (Anomalina) | Brazoria | 1 | 12.5K | 576K | Aug 1993 – Jun 2001 |
| Houston "M" G-3-150204 | Howard Exploration, Inc. only | Chocolate Bayou, N. (Schenck) | Brazoria | 1 | 12.5K | 228K | Jun 1994 – Jun 1996 |
| Truksa O-3-23743 | Elliott Oil & Gas Operating Co. only | Chocolate Bayou (Frio, First) | Brazoria | 1 | 12.4K | 4.46K | Apr 1999 – Jan 2025 |
| Old Ocean Unit G-3-249826 | Hilcorp Energy Company only | Old Ocean (Larsen) | Brazoria | 1 | 12.3K | 515K | Dec 2008 – Apr 2026 |
| Thess G-3-199205 | Elliott Oil & Gas Operating Co. only | Chocolate Bayou,n.(andrau Stray) | Brazoria | 1 | 12K | 770K | Dec 2003 – Apr 2010 |
| Holy Comforter Unit G-3-173198 | Timberwolf Energy, Inc. only | Angleton, South (F-9 Block D) | Brazoria | 1 | 12K | 665K | May 1999 – Sep 2007 |
| Old Ocean Unit G-3-196553 | Hilcorp Energy Company only | Old Ocean (F-6) | Brazoria | 1 | 12K | 256K | Jun 2003 – Mar 2007 |
| Mound Company Lease NCT-1B O-3-24625 | Linc Gulf Coast Petroleum, Inc. only | Hoskins Mound | Brazoria | 1 | 12K | 6.89K | Mar 2005 – Dec 2012 |
| Wieting, A. M. G-3-172642 | Enervest Operating, L.L.C. only | Chocolate Bayou ( Schenck) | Brazoria | 1 | 11.9K | 726K | Mar 1999 – Jun 2001 |
| Clemens State Tract 8 Gas Unit G-3-161862 | Rutherford Oil Corporation only | Clemens, SE, (Frio A) | Brazoria | 1 | 11.9K | 172K | Aug 1996 – Aug 1997 |
| Brockman, J. C. et Al G-3-262834 | Hilcorp Energy Company only | Old Ocean (Frio 12700) | Brazoria | 1 | 11.6K | 1.81M | Jul 2011 – Apr 2026 |
| Brown, Cecil -B- O-3-5592 | Exxon Corp. only | Hastings, East | Brazoria | 5 | 11.5K | 65.9K | by Jan 1993 – Apr 1997 |
| Banfield G-3-148358 | Elliott Oil & Gas Operating Co. only | Chocolate Bayou ( Freeman) | Brazoria | 1 | 11.5K | 815K | Feb 1994 – Mar 2004 |
| Old Ocean Unit G-3-271445 | Hilcorp Energy Company only | Old Ocean (F-26) | Brazoria | 1 | 11.4K | 201K | Sep 2013 – Apr 2026 |
| Farms, I. P. O-3-22487 | Texas Meridian Res. Expl., Inc. only | Chocolate Bayou (Lower Schenk) | Brazoria | 1 | 11.4K | 36K | Jun 1994 – Feb 1995 |
| Vrazel (St) O-3-24965 | BXP Operating, LLC only | Danbury Dome (5655 Sand) | Brazoria | 1 | 11.4K | 55.5K | Feb 2007 – Oct 2010 |
| Sun Fee G-3-65269 | Paleo Oil Company LLC only | Oyster Creek (Frio 7100) | Brazoria | 1 | 11.4K | 7.1M | by Jan 1993 – Aug 2021 |
| Old Ocean Unit G-3-152176 | Hilcorp Energy Company only | Old Ocean (Armstrong) | Brazoria | 1 | 11.3K | 1.22M | May 1995 – Jan 2004 |
| Vance Dunnam G-3-121022 | Buffco Production Inc. only | Chenango, E. (Dunnam) | Brazoria | 1 | 11.2K | 374K | by Jan 1993 – Feb 2006 |
| Way, H. J., "B" O-3-10401 | North Central Oil Corp. only | Manvel (F.B. II, Oligocene) | Brazoria | 3 | 11.1K | 20.5K | by Jan 1993 – Jan 1996 |
| Old Ocean Unit G-3-42580 | Hilcorp Energy Company only | Old Ocean (Larsen) | Brazoria | 1 | 11.1K | 2.41M | by Jan 1993 – Jun 2000 |
| Veselka G-3-156099 | Browning, Landon only | Danbury, SW. (12,400-C) | Brazoria | 1 | 11K | 849K | Jul 1995 – Dec 1996 |
| Old Ocean Unit G-3-133631 | Hilcorp Energy Company only | Old Ocean (F- 7) | Brazoria | 1 | 11K | 1.03M | by Jan 1993 – Aug 2003 |
| Marmion G-3-143160 | Apache Corporation only | Danbury, SW. (12,690) | Brazoria | 1 | 10.9K | 1.78M | by Jan 1993 – Mar 1998 |