| River Ranch G-2-190193 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 1.44K | 1.89M | Mar 2002 – Jan 2016 |
| O'Connor Ranch "J" G-2-190171 | Chevron U. S. A. Inc. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 831 | 110K | Sep 2001 – Jun 2003 |
| O'Connor Ranch G-2-214399 | Milagro Exploration, LLC only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 757 | 112K | Apr 2005 – Aug 2008 |
| O'Connor Ranch G-2-211930 | KCS Resources, Inc. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 756 | 133K | Mar 2005 – Dec 2005 |
| O'Connor Ranch "G" G-2-186995 | Chevron U. S. A. Inc. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 740 | 389K | Oct 2001 – Nov 2003 |
| River Ranch C G-2-199025 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 717 | 2.45M | Aug 2003 – Oct 2011 |
| O'Connor Ranch "Q" G-2-185192 | Chevron U. S. A. Inc. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 643 | 543K | Dec 2000 – Sep 2003 |
| O'Connor Ranch "B" G-2-181495 | Proline Energy Resources Inc only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 622 | 1.38M | Oct 2000 – Aug 2025 |
| River Ranch G-2-191234 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 567 | 1.39M | Mar 2002 – Dec 2005 |
| O'Connor Ranch "R" G-2-180882 | Proline Energy Resources Inc only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 470 | 1.12M | Oct 2000 – Dec 2025 |
| River Ranch G-2-190192 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 433 | 1.32M | Mar 2002 – Nov 2007 |
| O'Connor Ranch "B" G-2-180382 | Proline Energy Resources Inc only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 342 | 730K | Sep 2000 – Aug 2025 |
| O'Connor Ranch "T" G-2-180921 | Proline Energy Resources Inc only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 280 | 983K | May 2001 – Dec 2025 |
| O'Connor Ranch G-2-212439 | Proline Energy Resources Inc only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 272 | 747K | Apr 2005 – Aug 2025 |
| River Ranch "F" G-2-247728 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 262 | 788K | Feb 2009 – Jul 2019 |
| O'Connor Ranch "B" G-2-180176 | Chevron U. S. A. Inc. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 254 | 744K | Aug 2000 – Mar 2004 |
| River Ranch C G-2-200057 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 254 | 1.09M | Dec 2003 – Jun 2010 |
| River Ranch A G-2-198947 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 252 | 664K | Aug 2003 – Dec 2004 |
| O'Connor Ranch "B" G-2-180241 | Proline Energy Resources Inc only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 249 | 1.01M | Sep 2000 – Aug 2025 |
| O'Connor Ranch "R" G-2-180875 | Milagro Exploration, LLC only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 235 | 606K | Oct 2000 – Mar 2008 |
| O'Connor Ranch "C" G-2-184624 | Chevron U. S. A. Inc. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 234 | 215K | Jul 2001 – Oct 2003 |
| River Ranch B G-2-199003 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 226 | 934K | Aug 2003 – Mar 2006 |
| Donoghue O-2-8992 | Edge Petroleum Oper. Co., Inc. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 224 | 0 | Sep 2005 – Jan 2006 |
| O'Connor Ranch G-2-212573 | KCS Resources, Inc. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 214 | 100K | Apr 2005 – Apr 2006 |
| River Ranch G-2-212441 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 213 | 1.08M | Jun 2005 – Mar 2012 |
| River Ranch E G-2-200048 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 199 | 634K | Nov 2003 – Apr 2006 |
| River Ranch "F" G-2-247727 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 182 | 491K | Feb 2009 – Aug 2012 |
| O'Connor Ranch G-2-212166 | Milagro Exploration, LLC only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 172 | 207K | Apr 2005 – Oct 2010 |
| River Ranch B G-2-226828 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 109 | 407K | Mar 2006 – Mar 2009 |
| River Ranch G-2-190195 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 103 | 392K | Apr 2002 – Feb 2007 |
| River Ranch D G-2-200199 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 99 | 1.48M | Dec 2003 – Mar 2017 |
| Donoghue G-2-195117 | Edge Petroleum Oper. Co., Inc. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 91 | 759K | Mar 2003 – May 2006 |
| River Ranch G-2-254113 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 69 | 503K | Aug 2009 – Apr 2017 |
| River Ranch A G-2-202629 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 66 | 45.6K | Feb 2004 – Dec 2004 |
| River Ranch G-2-190190 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 58 | 344K | Mar 2002 – Jan 2016 |
| River Ranch G-2-192057 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 58 | 295K | Jun 2002 – Nov 2005 |
| River Ranch E G-2-200056 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 52 | 826K | Nov 2003 – Feb 2008 |
| Hensley, J. W. et al, Tr. G-2-187156 | Chevron U. S. A. Inc. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 45 | 169K | Oct 2001 – Sep 2003 |
| River Ranch B G-2-199035 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 40 | 129K | Aug 2003 – Mar 2006 |
| River Ranch G-2-192166 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 38 | 336K | Mar 2002 – Mar 2011 |
| O'Connor Ranch "R" G-2-180918 | Chevron U. S. A. Inc. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 33 | 301K | Oct 2000 – Dec 2001 |
| O'Connor Ranch "M" G-2-195166 | Milagro Exploration, LLC only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 21 | 108K | May 2003 – Jul 2007 |
| River Ranch G-2-254111 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 20 | 214K | Sep 2009 – Sep 2013 |
| River Ranch E G-2-200190 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 20 | 43.3K | Nov 2003 – Dec 2005 |
| River Ranch G-2-195164 | Charro Operating, L.L.C. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 12 | 261K | Apr 2003 – Jul 2005 |
| O'Connor Ranch G-2-216256 | Proline Energy Resources Inc only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 10 | 394K | May 2005 – Aug 2025 |
| O'Connor Ranch "O" G-2-182080 | Chevron U. S. A. Inc. only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 8 | 265K | Feb 2001 – Jan 2002 |
| O'Connor Ranch G-2-212468 | Proline Energy Resources Inc only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 4 | 213K | Apr 2005 – Oct 2019 |
| O'Connor Ranch G-2-214373 | Proline Energy Resources Inc only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 3 | 559K | May 2005 – Aug 2025 |
| O'Connor Ranch G-2-212451 | Milagro Exploration, LLC only | Oconnor Ranch (Frio Cons.) | Goliad | 1 | 3 | 730K | Apr 2005 – May 2014 |