| Knobloch a 6-H O-1-14581 | Texas Petroleum Investment Co. | Darst Creek (Edwards) | Guadalupe | 1 | 31.3K | 0 | Oct 2004 – Feb 2015 |
| Allen -a- 10H O-1-14700 | Texas Petroleum Investment Co. | Luling-Branyon | Guadalupe | 1 | 31.2K | 0 | Jun 2006 – Jan 2010 |
| Dorset-Tiller O-1-1064 | Texas Petroleum Investment Co. | Luling-Branyon | Caldwell | 3 | 30.8K | 43 | by Jan 1993 – Aug 2026 |
| Knobloch C. a 04-H O-1-14500 | Texas Petroleum Investment Co. | Darst Creek (Edwards) | Guadalupe | 1 | 29.5K | 0 | Sep 2003 – Apr 2009 |
| Denman C 2H O-1-14697 | Texas Petroleum Investment Co. | Darst Creek (Edwards) | Guadalupe | 1 | 29.4K | 0 | May 2006 – Sep 2017 |
| Willie, H. 3-H O-1-15024 | Texas Petroleum Investment Co. | Darst Creek (Edwards) | Guadalupe | 1 | 27.4K | 0 | Dec 2008 – Oct 2011 |
| Boyd, Henry C. O-2-3334 | Texas Petroleum Investment Co. | Sheriff (5700 Greta Sand) | Calhoun | 2 | 27.3K | 83K | by Jan 1993 – Jun 1998 |
| Denman "B" O-1-13091 | Texas Petroleum Investment Co. | Darst Creek (Buda) | Guadalupe | 1 | 26.6K | 47 | by Jan 1993 – Nov 2009 |
| Mercer-Tabor Unit O-1-10427 | Texas Petroleum Investment Co. | Luling-Branyon | Caldwell | 1 | 26.2K | 45 | by Jan 1993 – Aug 2026 |
| McKinney, C. H. & T. O. O-1-1085 | Texas Petroleum Investment Co. | Luling-Branyon | Caldwell | 3 | 24.9K | 47 | by Jan 1993 – Aug 2026 |
| Harrison-Dix O-1-2931 | Texas Petroleum Investment Co. | Darst Creek (Buda) | Guadalupe | 6 | 24.5K | 7.28K | by Jan 1993 – Aug 2026 |
| Posey O-1-2761 | Texas Petroleum Investment Co. | Darst Creek (Buda) | Guadalupe | 11 | 24.4K | 2.96K | by Jan 1993 – Sep 2009 |
| Rios, Laura O-1-1095 | Texas Petroleum Investment Co. | Luling-Branyon | Caldwell | 5 | 24.2K | 44 | by Jan 1993 – Aug 2026 |
| Trammel, H. S. 3H O-1-14632 | Texas Petroleum Investment Co. | Luling-Branyon | Caldwell | 1 | 23.6K | 0 | Aug 2005 – Aug 2014 |
| Tiller, Dorset & W.J. O-1-21184 | Texas Petroleum Investment Co. | Luling-Branyon | Caldwell | 1 | 21.3K | 0 | Aug 2023 – Aug 2026 |
| Roberts, Frank O-1-1099 | Texas Petroleum Investment Co. | Luling-Branyon | Caldwell | 2 | 19.4K | 46 | by Jan 1993 – Aug 2026 |
| Miller, Rand O-1-2753 | Texas Petroleum Investment Co. | Darst Creek (Buda) | Guadalupe | 22 | 17.6K | 21.8K | by Jan 1993 – Aug 2026 |
| Lebow-Merriweather O-1-1080 | Texas Petroleum Investment Co. | Luling-Branyon | Caldwell | 4 | 16.8K | 42 | by Jan 1993 – Oct 2015 |
| Roberts, J. M. O-1-1100 | Texas Petroleum Investment Co. | Luling-Branyon | Guadalupe | 5 | 15.5K | 16K | by Jan 1993 – Mar 2002 |
| Mercer, A.-Mercer, M., Unit NO.1 O-1-3619 | Texas Petroleum Investment Co. | Luling-Branyon | Caldwell | 1 | 15.5K | 44 | by Jan 1993 – Aug 2026 |
| Harrison-Dix O-1-2792 | Texas Petroleum Investment Co. | Darst Creek (Edwards) | Guadalupe | 4 | 15.1K | 35 | by Jan 1993 – Jul 2014 |
| Duval County Ranch Co. -K- O-4-12347 | Texas Petroleum Investment Co. | Charamousca,w(wilcox 3 Seg D LO) | Duval | 2 | 13.9K | 49.2K | Jun 1994 – Jun 1998 |
| Sebesta Brothers O-3-17427 | Texas Petroleum Investment Co. | Aggieland (Woodbine) | Brazos | 1 | 13.5K | 144K | by Jan 1993 – Nov 2006 |
| Anderson, C. (Chevron) O-1-2722 | Texas Petroleum Investment Co. | Darst Creek (Buda) | Guadalupe | 6 | 13.4K | 2.73K | by Jan 1993 – Aug 2010 |
| Duval County Ranch Co. 'K' O-4-11792 | Texas Petroleum Investment Co. | Charamousca, W. (Yegua 25) | Duval | 3 | 13.3K | 62.3K | by Jan 1993 – Feb 1998 |
| Golden-McKean O-1-1084 | Texas Petroleum Investment Co. | Luling-Branyon | Guadalupe | 2 | 12.7K | 29 | by Jan 1993 – Aug 2026 |
| Duval County Ranch Co. -K- O-4-7301 | Texas Petroleum Investment Co. | Charamousca, W. (Wilcox 4, Lo.) | Duval | 1 | 12.4K | 36.7K | by Jan 1993 – Aug 1997 |
| Grayburg-McKean O-1-1073 | Texas Petroleum Investment Co. | Luling-Branyon | Guadalupe | 7 | 11K | 62.6K | by Jan 1993 – Sep 1999 |
| Sun Fee G-3-97143 | Texas Petroleum Investment Co. | Oyster Creek (Frio 7100) | Brazoria | 1 | 9.52K | 2.35M | by Jan 1993 – Dec 2005 |
| Denman -B- O-1-6114 | Texas Petroleum Investment Co. | Darst Creek (Edwards) | Guadalupe | 3 | 7.5K | 13 | by Jan 1993 – Oct 2009 |
| Knodel, Annie O-1-2752 | Texas Petroleum Investment Co. | Darst Creek (Buda) | Guadalupe | 8 | 7.48K | 4.07K | by Jan 1993 – Jan 2025 |
| Stair-Proctor Unit 1 O-1-3685 | Texas Petroleum Investment Co. | Luling-Branyon | Caldwell | 1 | 6.09K | 39 | by Jan 1993 – Oct 2006 |
| McFarland, Robert et Al G-3-133771 | Texas Petroleum Investment Co. | Pledger (Frio 7200) | Brazoria | 1 | 5.49K | 733K | by Jan 1993 – Nov 2002 |
| Middleton, A. D. a/C 1 G-3-150788 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 4.73K | 3.99M | Aug 1994 – Sep 2009 |
| Klein, M. T. O-1-2751 | Texas Petroleum Investment Co. | Darst Creek (Buda) | Guadalupe | 5 | 3.94K | 10.7K | by Jan 1993 – Aug 2003 |
| 4-Way Ranch O-2-7467 | Texas Petroleum Investment Co. | Lolita, Deep (McMahan Zone) | Jackson | 1 | 3.51K | 409 | by Jan 1993 – Dec 2000 |
| Dix, Thomas "C" 4H O-1-14475 | Texas Petroleum Investment Co. | Darst Creek (Edwards) | Guadalupe | 1 | 3.46K | 0 | May 2003 – Nov 2003 |
| 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 | by Jan 1993 – Apr 2017 |
| McKean,a.j. & J.M. O-1-5947 | Texas Petroleum Investment Co. | Luling-Branyon (1700) | Guadalupe | 2 | 2.81K | 133K | by Jan 1993 – Jun 2000 |
| 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 |
| Pledger Gas Field Unit G-3-7865 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 2.69K | 1.75M | by Jan 1993 – Feb 2025 |
| 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 – Jul 2026 |
| Pledger Gas Field Unit G-3-7892 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 2.46K | 1.04M | by Jan 1993 – Jun 2011 |
| Knobloch B 5H O-1-14571 | Texas Petroleum Investment Co. | Darst Creek (Edwards) | Guadalupe | 1 | 2.31K | 0 | Nov 2004 – Nov 2006 |
| 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 | by Jan 1993 – May 1995 |
| Pledger Gas Field Unit G-3-7890 | Texas Petroleum Investment Co. | Pledger (Frio 6500-6800) | Brazoria | 1 | 1.65K | 867K | by Jan 1993 – Feb 1996 |
| Anahuac Main Frio Gas Unit I G-3-149959 | Texas Petroleum Investment Co. | Anahuac | Chambers | 1 | 1.52K | 5.76M | May 1994 – Dec 2003 |