| Knobloch O-1-2712 | Texas Petroleum Investment Co. | Darst Creek (Buda) | Guadalupe | 1 | 1.45K | 20 | Aug 1996 – Oct 1999 |
| Pledger Gas Field Unit G-3-7874 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 1.42K | 487K | by 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 |
| Stair, O.F. O-1-10171 | Texas Petroleum Investment Co. | Luling-Branyon (1700) | Caldwell | 1 | 1.23K | 17.5K | by Jan 1993 – Aug 2006 |
| 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 1 G-3-152179 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 1.01K | 1.83M | Dec 1994 – Jul 2000 |
| Mercer 3H Unit O-1-18712 | Texas Petroleum Investment Co. | Luling-Branyon | Caldwell | 2 | 975 | 0 | Aug 2015 – May 2019 |
| Middleton, A. D. a/C 1 G-3-165953 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 963 | 471K | Oct 1997 – Jan 2008 |
| Shanklin, W.R. O-1-11508 | Texas Petroleum Investment Co. | Luling-Branyon (1700) | Guadalupe | 1 | 941 | 0 | Oct 2014 – Jan 2026 |
| 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 | by 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 |
| Duval County Ranch Co. -K- G-4-149494 | Texas Petroleum Investment Co. | Charamousca, W.(wilcox 2) | Duval | 1 | 884 | 418K | Apr 1994 – May 1998 |
| Sun Fee G-3-67621 | Texas Petroleum Investment Co. | Oyster Creek (Frio 7100) | Brazoria | 1 | 882 | 142K | by Jan 1993 – Sep 1994 |
| Zappe, Marie G-3-168014 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 853 | 391K | Apr 1998 – Jun 1999 |
| Sun Fee G-3-250547 | Texas Petroleum Investment Co. | Oyster Creek (6760 Sand) | Brazoria | 1 | 757 | 356K | Aug 2007 – May 2010 |
| McFarland, Robert et Al O-3-26031 | Texas Petroleum Investment Co. | Pledger (Frio 7260) | Brazoria | 1 | 711 | 411 | May 2012 – Nov 2021 |
| Pledger Gas Field Unit G-3-83431 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 670 | 232K | by Jan 1993 – Nov 2003 |
| Duval County Ranch Co. -K- G-4-146159 | Texas Petroleum Investment Co. | Charamousca, W. (Wilcox 2 Seg C) | Duval | 1 | 639 | 77.5K | Mar 1993 – Feb 1996 |
| Pledger GU 1 O-3-25512 | Texas Petroleum Investment Co. | Pledger (Frio 7040) | Brazoria | 1 | 635 | 851 | Mar 2010 – Jul 2010 |
| Wisch-Saint Unit G-3-86109 | Texas Petroleum Investment Co. | Pledger (Cayce 7650) | Brazoria | 1 | 625 | 51.8K | Oct 1993 – Nov 1998 |
| Clark, G. J. J. G-3-171328 | Texas Petroleum Investment Co. | Anahuac, W. (Marginulina "A") | Chambers | 1 | 580 | 393K | Nov 1998 – Jun 2000 |
| Duval County Ranch Co. -K- G-4-148266 | Texas Petroleum Investment Co. | Charamousca, W. (Wilcox 1, C) | Duval | 1 | 470 | 273K | Jan 1994 – May 2016 |
| Pledger GU 1 G-3-189218 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 456 | 983K | May 2002 – Jul 2009 |
| Duval County Ranch Co. "K" G-4-144562 | Texas Petroleum Investment Co. | Charamousca, W.(wilcox 2) | Duval | 1 | 455 | 210K | Feb 1993 – Aug 1993 |
| Duval County Ranch Co. -K- G-4-150241 | Texas Petroleum Investment Co. | Charamousca, W. (Wilcox 3) | Duval | 1 | 442 | 84.6K | May 1994 – Jul 2000 |
| Pledger GU 1 G-3-85635 | Texas Petroleum Investment Co. | Pledger (Frio 7260) | Brazoria | 1 | 441 | 298K | May 1997 – May 2002 |
| Broussard G-3-185095 | Texas Petroleum Investment Co. | Anahuac (FB D-1, Frio 12-A) | Chambers | 1 | 309 | 36.1K | Mar 2001 – Jul 2004 |
| White, R. M. G-3-191840 | Texas Petroleum Investment Co. | Anahuac (Miocene 6-C) | Chambers | 1 | 281 | 3.14K | Oct 2002 – Nov 2007 |
| Gripon, H. A. a/C #1 G-3-170790 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 258 | 240K | Oct 1998 – Mar 2001 |
| Duval County Ranch Co. -K- G-4-150094 | Texas Petroleum Investment Co. | Charamousca, W. (Wilcox 2 Seg C) | Duval | 1 | 185 | 89.3K | Jun 1994 – Nov 1994 |
| Grayburg-Hardeman -B- O-1-1072 | Texas Petroleum Investment Co. | Luling-Branyon | Caldwell | 1 | 180 | 5 | May 1997 – Sep 1997 |
| Tyrrell, W. C. Tr. G-3-176741 | Texas Petroleum Investment Co. | Anahuac, W. (Marginulina) | Chambers | 1 | 142 | 635K | Feb 2000 – Feb 2021 |
| White, R. M. G-3-154525 | Texas Petroleum Investment Co. | Anahuac, W. (Marg. 2) | Chambers | 1 | 127 | 83.9K | May 1995 – May 1997 |
| Mercer, Alf G-1-64769 | Texas Petroleum Investment Co. | Luling-Branyon (1700) | Caldwell | 1 | 113 | 132K | by Jan 1993 – Apr 2017 |
| Middleton, A. D. a/C 1 G-3-145191 | Texas Petroleum Investment Co. | Anahuac (FB a-1, Miocene 23) | Chambers | 1 | 104 | 22K | Feb 1993 – Jun 1993 |
| Duval County Ranch Co. "K" G-4-143307 | Texas Petroleum Investment Co. | Charamousca, W. (Wilcox 2 Seg C) | Duval | 1 | 68 | 505K | by Jan 1993 – May 2026 |
| Anahuac Main Frio Gas Unit 1 G-3-156916 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 59 | 3.22M | Dec 1995 – Nov 1997 |
| Broussard-Hebert a/C 1 O-3-16435 | Texas Petroleum Investment Co. | Anahuac (FB D-1, Frio 13) | Chambers | 1 | 10 | 0 | Jun 2003 – Jun 2003 |
| Zappe, Marie G-3-57447 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 4 | 70.9K | Mar 2000 – Apr 2003 |
| Duval County Ranch Co. -K- G-4-174106 | Texas Petroleum Investment Co. | Charamousca, West (Jackson) | Duval | 1 | 3 | 51.2K | Jul 1999 – Jul 2015 |
| Duval County Ranch Co. "K" G-4-145123 | Texas Petroleum Investment Co. | Charamousca, W. (Wilcox 2 Seg C) | Duval | 1 | 1 | 2.08M | Feb 1993 – Jun 2007 |
| Pledger Gas Field Unit G-3-7878 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 0 | 0 | — |
| Duval County Ranch Co. -K- G-4-173764 | Texas Petroleum Investment Co. | Charamousca, West (Jackson) | Duval | 1 | 0 | 84.6K | Apr 1999 – May 2026 |
| Duval County Ranch Co -K- G-4-175357 | Texas Petroleum Investment Co. | Charamousca, West (Jackson) | Duval | 1 | 0 | 13.5K | Nov 1999 – Oct 2000 |
| Tabor W. H. G-1-74320 | Texas Petroleum Investment Co. | Luling-Branyon (1700) | Caldwell | 1 | 0 | 23.6K | by Jan 1993 – Apr 2017 |
| Dorset-Tiller G-1-82179 | Texas Petroleum Investment Co. | Luling-Branyon (1700) | Caldwell | 1 | 0 | 58.7K | by Jan 1993 – Apr 2017 |
| Byrd, Clara O-1-7971 | Texas Petroleum Investment Co. | Luling-Branyon | Caldwell | 1 | 0 | 0 | — |
| Pledger Gas Field Unit G-3-7885 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 0 | 0 | — |