| Zappe, Marie O-3-95 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 20 | 515K | 5.27M | Jan 1993 – Apr 2026 |
| Knowles, W. T. O-3-62 | McGowan Working Partners, Inc. only | Anahuac | Chambers | 5 | 508K | 648K | Jan 1993 – Apr 2026 |
| Johnson, C. G. a/C #1 O-3-78 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 11 | 396K | 541K | Jan 1993 – May 2025 |
| Middleton, A. D. a/C #1 O-3-82 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 35 | 300K | 3.11M | Jan 1993 – Apr 2026 |
| Gripon, H. A. a/C #1 O-3-76 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 24 | 284K | 1.42M | Jan 1993 – Apr 2026 |
| Tyrrell, W. C., Tr. O-3-90 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 35 | 278K | 487K | Jan 1993 – Apr 2026 |
| Johnson, C. G. a/C #2 O-3-79 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 5 | 258K | 830K | Jan 1993 – Apr 2026 |
| Syphrett, D. W. O-3-65 | McGowan Working Partners, Inc. only | Anahuac | Chambers | 3 | 234K | 443K | Jan 1993 – Apr 2026 |
| Willcox, G. C., Etal O-3-66 | McGowan Working Partners, Inc. only | Anahuac | Chambers | 5 | 208K | 411K | Jan 1993 – Apr 2026 |
| Peterson, G. O-3-63 | McGowan Working Partners, Inc. only | Anahuac | Chambers | 2 | 145K | 376K | Jan 1993 – Apr 2026 |
| Middleton, A.D. a/C 5 O-3-18119 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 2 | 115K | 172K | Jan 1993 – Apr 2026 |
| Broussard, J.E. A/C#2 O-3-11752 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 2 | 81.4K | 1M | Jan 1993 – Mar 2020 |
| Middleton, A. D. a/C #4 O-3-85 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 5 | 73.6K | 121K | Jan 1993 – Apr 2026 |
| Anahuac Main Frio Oil Unit O-3-20022 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 64.2K | 47.4K | Sep 2010 – Feb 2025 |
| Engels, M. H. O-3-75 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 8 | 63.7K | 345K | Jan 1993 – May 2013 |
| White, R. M. O-3-97 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 12 | 31.8K | 36.8K | Jan 1993 – Sep 2021 |
| Broussard-Hebert, a/C #1 O-3-68 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 11 | 21.9K | 32K | Jan 1993 – Dec 2009 |
| Broussard, J. E. a/C #1 O-3-70 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 5 | 19.8K | 591K | Mar 1993 – Mar 2013 |
| Marshall, H. E., Jr. O-3-81 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 7 | 5.86K | 43.4K | Mar 1993 – Dec 1996 |
| Broussard Hebert G-3-152470 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 5.81K | 3.58M | Dec 1994 – Apr 1999 |
| Broussard-Hebert a/C 1 G-3-152549 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 5.8K | 1.6M | Dec 1994 – Apr 1999 |
| Anahuac Main Frio Gas Unit 1 G-3-162280 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 4.96K | 942K | Feb 1997 – Aug 2002 |
| Middleton, A. D. a/C 1 G-3-150788 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 4.73K | 3.99M | Aug 1994 – Sep 2009 |
| Middleton, A. D. a/C 1 G-3-150475 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 4.7K | 5.12M | Aug 1994 – Apr 2001 |
| Middleton, A. D. a/C #1 G-3-151057 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 4.31K | 4.32M | Aug 1994 – Feb 2005 |
| Marshall, H. E. G-3-152760 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 4.03K | 5.11M | Jan 1995 – Dec 2008 |
| Middleton, A. D. a/C 1 G-3-151072 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 3.86K | 2.44M | Sep 1994 – May 2002 |
| Broussard, J. E. a/C #1 G-3-166522 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 3.07K | 697K | Dec 1997 – Jan 2005 |
| Anahuac Main Frio Gas Unit I G-3-149394 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 2.92K | 6.57M | Jun 1994 – Nov 1997 |
| Broussard, J.E. a/C #2 G-3-164721 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 2.68K | 413K | Aug 1997 – Aug 1998 |
| Engels, M. H. G-3-166746 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 2.55K | 1.16M | Dec 1997 – May 2005 |
| Middleton, A. D. a/C 1 G-3-161831 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 1.71K | 376K | Mar 1997 – Jan 1998 |
| Middleton, A. D. a/C #1 G-3-155181 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 1.55K | 2.85M | Jul 1995 – Jan 1998 |
| Engels, M. H. G-3-152857 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 1.54K | 985K | Jan 1995 – Mar 1999 |
| Anahuac Main Frio Gas Unit I G-3-149959 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 1.52K | 5.76M | May 1994 – Dec 2003 |
| Anahuac Main Frio Gas Unit 1 G-3-149731 | Exxon Corp. only | Anahuac | Chambers | 1 | 1.48K | 5.05M | May 1994 – Nov 1998 |
| Anahuac Main Frio Gas Unit 1 G-3-149982 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 1.39K | 6.82M | Jul 1994 – Aug 1998 |
| Anahuac Main Frio Gas Unit I G-3-149958 | Exxon Corp. only | Anahuac | Chambers | 1 | 1.31K | 7.04M | May 1994 – Jul 1997 |
| Engels, M. H. G-3-122704 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 1.25K | 2.45M | Jan 1995 – Apr 1999 |
| Anahuac Main Frio Gas Unit 1 G-3-150786 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 1.23K | 7.28M | Aug 1994 – Jan 1998 |
| Engels, M. H. G-3-122702 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 1.04K | 612K | Oct 1997 – May 1999 |
| Anahuac Main Frio Gas Unit I G-3-150260 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 1.03K | 7.21M | Jun 1994 – Aug 2019 |
| Anahuac Main Frio Gas Unit 1 G-3-152179 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 1.01K | 1.83M | Dec 1994 – Jul 2000 |
| Middleton, A. D. a/C 1 G-3-165953 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 963 | 471K | Oct 1997 – Jan 2008 |
| Zappe, Marie G-3-168014 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 853 | 391K | Apr 1998 – Jun 1999 |
| Anahuac Main Frio Gas Unit 1 G-3-150674 | Exxon Corp. only | Anahuac | Chambers | 1 | 826 | 4.71M | Aug 1994 – Jan 1998 |
| Anahuac Main Frio Gas Unit 1 G-3-150315 | Exxon Corp. only | Anahuac | Chambers | 1 | 776 | 2.51M | Jul 1994 – Jul 1997 |
| Tyrrell, W. C. Tr. G-3-172226 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 602 | 458K | Feb 1999 – Mar 2006 |
| Middleton, A. D. a/C 1 G-3-166834 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 574 | 159K | Dec 1997 – Apr 1999 |
| Broussard, J. E. a/C 2 G-3-170293 | Texas Petroleum Investment Co. only | Anahuac | Chambers | 1 | 524 | 383K | Sep 1998 – Aug 2004 |