| State Tract 689-A G-4-98179 | Texas Petroleum Investment Co. | Tule Lake | Nueces | 1 | 195K | 7.81M | Jan 1993 – Apr 2026 |
| Middleton, A. D. a/C #4 G-3-265024 | Texas Petroleum Investment Co. | Devillier (Lox B) | Chambers | 1 | 71.7K | 1.46M | Jun 2012 – May 2015 |
| Broussard-Hebert a/C #1 G-3-133668 | Texas Petroleum Investment Co. | Anahuac (FB a-2, Frio 12) | Chambers | 1 | 15.3K | 275K | Jan 2005 – Jun 2008 |
| Sun Fee G-3-97143 | Texas Petroleum Investment Co. | Oyster Creek (Frio 7100) | Brazoria | 1 | 9.52K | 2.35M | Jan 1993 – Dec 2005 |
| Middleton, A. D. a/C # 1 G-3-164296 | Texas Petroleum Investment Co. | Anahuac, W. (Marginulina "A") | Chambers | 1 | 8.46K | 2.67M | Jul 1997 – May 2021 |
| Broussard Hebert G-3-152470 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 5.81K | 3.58M | Dec 1994 – Apr 1999 |
| Middleton, A. D. a/C 1 G-3-205163 | Texas Petroleum Investment Co. | Anahuac (FB a-2, Frio 12) | Chambers | 1 | 5.8K | 82.2K | Oct 2004 – Nov 2006 |
| Broussard-Hebert a/C 1 G-3-152549 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 5.8K | 1.6M | Dec 1994 – Apr 1999 |
| McFarland, Robert et Al G-3-133771 | Texas Petroleum Investment Co. | Pledger (Frio 7200) | Brazoria | 1 | 5.49K | 733K | Jan 1993 – Nov 2002 |
| Anahuac Main Frio Gas Unit 1 G-3-162280 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 4.96K | 942K | Feb 1997 – Aug 2002 |
| Zappe, Marie et Al G-3-166742 | Texas Petroleum Investment Co. | Anahuac, W. (Marginulina "A") | Chambers | 1 | 4.95K | 1.91M | Dec 1997 – May 2020 |
| Middleton, A. D. a/C 1 G-3-150788 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 4.73K | 3.99M | Aug 1994 – Sep 2009 |
| Middleton, A. D. a/C 1 G-3-150475 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 4.7K | 5.12M | Aug 1994 – Apr 2001 |
| Middleton, A. D. a/C #1 G-3-151057 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 4.31K | 4.32M | Aug 1994 – Feb 2005 |
| Marshall, H. E. G-3-152760 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 4.03K | 5.11M | Jan 1995 – Dec 2008 |
| Middleton, A. D. a/C 1 G-3-151072 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 3.86K | 2.44M | Sep 1994 – May 2002 |
| Broussard - Hebert a/C 1 G-3-211578 | Texas Petroleum Investment Co. | Anahuac (FB a-2, Frio 13) | Chambers | 1 | 3.51K | 134K | Aug 2005 – Jun 2007 |
| Broussard, J. E. a/C #1 G-3-166522 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 3.07K | 697K | Dec 1997 – Jan 2005 |
| Tyrrell, W. C. Trust G-3-168006 | Texas Petroleum Investment Co. | Anahuac, W. (Marginulina "A") | Chambers | 1 | 2.95K | 906K | Apr 1998 – Jan 2001 |
| Anahuac Main Frio Gas Unit I G-3-149394 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 2.92K | 6.57M | Jun 1994 – Nov 1997 |
| Mercer, Mattie G-1-74323 | Texas Petroleum Investment Co. | Luling-Branyon (1700) | Caldwell | 1 | 2.83K | 108K | Jan 1993 – Apr 2017 |
| Middleton, A. D. a/C 1 G-3-167571 | Texas Petroleum Investment Co. | Anahuac, W. (Marginulina "A") | Chambers | 1 | 2.76K | 930K | Mar 1998 – Sep 1999 |
| Clark, G. J. J. G-3-168795 | Texas Petroleum Investment Co. | Anahuac, W. (Marginulina "A") | Chambers | 1 | 2.7K | 1.45M | Jun 1998 – Apr 2002 |
| Pledger Gas Field Unit G-3-7865 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 2.69K | 1.75M | Jan 1993 – Feb 2025 |
| Broussard, J.E. a/C #2 G-3-164721 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 2.68K | 413K | Aug 1997 – Aug 1998 |
| Engels, M. H. G-3-166746 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 2.55K | 1.16M | Dec 1997 – May 2005 |
| McKean, A. J. & J. M. G-1-178403 | Texas Petroleum Investment Co. | Luling-Branyon (1700) | Guadalupe | 1 | 2.53K | 106K | May 2000 – Oct 2010 |
| Pledger Gas Field Unit G-3-71057 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 2.48K | 904K | May 1997 – Apr 2026 |
| Pledger Gas Field Unit G-3-7892 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 2.46K | 1.04M | Jan 1993 – Jun 2011 |
| Sun Fee G-3-210123 | Texas Petroleum Investment Co. | Oyster Creek (6620 Sand) | Brazoria | 1 | 2.03K | 710K | Apr 2005 – Apr 2007 |
| Duval County Ranch Co.'k' G-4-144189 | Texas Petroleum Investment Co. | Charamousca, W.(wilcox 2) | Duval | 1 | 1.8K | 873K | Jan 1993 – May 1995 |
| Middleton, A. D. a/C 1 G-3-161831 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 1.71K | 376K | Mar 1997 – Jan 1998 |
| Pledger Gas Field Unit G-3-7890 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 1.65K | 867K | Jan 1993 – Feb 1996 |
| Middleton, A. D. a/C #1 G-3-155181 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 1.55K | 2.85M | Jul 1995 – Jan 1998 |
| Engels, M. H. G-3-152857 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 1.54K | 985K | Jan 1995 – Mar 1999 |
| Anahuac Main Frio Gas Unit I G-3-149959 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 1.52K | 5.76M | May 1994 – Dec 2003 |
| Pledger Gas Field Unit G-3-7874 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 1.42K | 487K | Jan 1993 – Jul 2004 |
| Anahuac Main Frio Gas Unit 1 G-3-149982 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 1.39K | 6.82M | Jul 1994 – Aug 1998 |
| Pledger Gas Field Unit G-3-228438 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 1.39K | 343K | Oct 2006 – Nov 2014 |
| Engels, M. H. G-3-122704 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 1.25K | 2.45M | Jan 1995 – Apr 1999 |
| Zappe, Marie et Al G-3-170906 | Texas Petroleum Investment Co. | Anahuac, W. (Marginulina "A") | Chambers | 1 | 1.25K | 539K | Jul 1998 – Jun 1999 |
| Anahuac Main Frio Gas Unit 1 G-3-150786 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 1.23K | 7.28M | Aug 1994 – Jan 1998 |
| Engels, M. H. G-3-122702 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 1.04K | 612K | Oct 1997 – May 1999 |
| Wisch-Saint Unit G-3-125994 | Texas Petroleum Investment Co. | Pledger (Frio 7220) | Brazoria | 1 | 1.03K | 222K | Oct 1993 – Nov 1998 |
| Anahuac Main Frio Gas Unit I G-3-150260 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 1.03K | 7.21M | Jun 1994 – Aug 2019 |
| Anahuac Main Frio Gas Unit 1 G-3-152179 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 1.01K | 1.83M | Dec 1994 – Jul 2000 |
| Middleton, A. D. a/C 1 G-3-165953 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 963 | 471K | Oct 1997 – Jan 2008 |
| Sun Fee G-3-257820 | Texas Petroleum Investment Co. | Oyster Creek (6620 Sand) | Brazoria | 1 | 940 | 498K | Jun 2010 – Oct 2012 |
| Pledger Gfu G-3-131637 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 926 | 518K | Jan 1993 – Mar 2001 |
| Smith, T.L. Jr. G-3-137373 | Texas Petroleum Investment Co. | Pledger (Miocene 5100 B) | Brazoria | 1 | 901 | 677K | May 1997 – Apr 2008 |