| Duval County Ranch Co. O-4-425 | Hinds Petroleum, LLC only | Casa Blanca | Duval | 34 | 463K | 1.35K | Jan 1993 – Dec 2024 |
| Duval County Ranch Co. -K- O-4-6866 | Texas Petroleum Investment Co. only | Charamousca, W. (Wilcox 2 Seg C) | Duval | 14 | 266K | 344K | Jan 1993 – Apr 2026 |
| Duval County Ranch Co. O-4-6478 | Cordele Development Corporation only | Neely, East (1150) | Duval | 9 | 239K | 173 | Jan 1993 – Mar 2026 |
| Duval County Ranch Co. -E- O-4-2108 | Production Resources, Inc. only | Piedre Lumbre | Duval | 16 | 182K | 21 | Jan 1993 – Sep 2024 |
| Duval County Ranch Co. -K- O-4-7036 | Texas Petroleum Investment Co. only | Charamousca, W. (Wilcox 3) | Duval | 6 | 171K | 163K | Jun 1994 – Feb 2017 |
| Duval County Ranch Co. State -P- O-4-1655 | Caribbean Energy LLC II only | Lopez, North (Lopez) | Duval | 9 | 138K | 20 | Jan 1993 – Oct 2024 |
| Duval County Ranch Company -J- O-4-3480 | Karper Oil & Gas Corporation only | Dejay (Chernosky) | Duval | 1 | 114K | 21 | Jan 1993 – Feb 2026 |
| Duval County Ranch Co. O-4-6283 | Cordele Development Corporation only | Neely, East ( 600 -A-) | Duval | 6 | 112K | 170 | Jan 1993 – Mar 2026 |
| Duval County Ranch Co. -B- O-4-1097 | Hilcorp Energy Company only | Govt. Wells, N. | Duval | 7 | 99.1K | 21 | Jan 1993 – Apr 2026 |
| Duval County Ranch Co. O-4-6284 | Cordele Development Corporation only | Neely, East ( 600 -B-) | Duval | 5 | 91.5K | 173 | Jan 1993 – Mar 2026 |
| Duval County Ranch Co.-State -F- O-4-438 | Caribbean Energy LLC II only | Cedro Hill | Duval | 9 | 86.6K | 20 | Jan 1993 – Apr 2026 |
| Duval County Ranch Co. "K" O-4-11329 | Texas Petroleum Investment Co. only | Charamousca, West (3350) | Duval | 7 | 69.1K | 190K | Jan 1993 – Apr 2026 |
| Duval County Ranch Co. O-4-6465 | Cordele Development Corporation only | Neely, East ( 700) | Duval | 7 | 62.8K | 173 | Jan 1993 – Mar 2026 |
| Duval County Ranch Co.-K- O-4-6927 | Texas Petroleum Investment Co. only | Charamousca, W. (Wilcox 4) | Duval | 2 | 44.6K | 51.6K | Jan 1993 – Aug 2018 |
| Duval County Ranch Co. State "V" O-4-9932 | Killam Oil Co., Ltd. only | Lundell (Mirando No. 1) | Duval | 3 | 43.7K | 3.58K | Jan 1993 – Apr 2026 |
| Duval County Ranch Co. -D- O-4-1098 | Hilcorp Energy Company only | Govt. Wells, N. | Duval | 2 | 42.3K | 21 | Jan 1993 – Apr 2026 |
| Duval County Ranch Co. -K- O-4-6753 | Texas Petroleum Investment Co. only | Charamousca, W.(wilcox 2) | Duval | 12 | 32.8K | 230K | Jan 1993 – Jul 2000 |
| Duval County Ranch Co. -A- O-4-1096 | Hilcorp Energy Company only | Govt. Wells, N. | Duval | 6 | 27.3K | 21 | Jan 1993 – Aug 2012 |
| Duval County Ranch Company -O- O-4-2867 | Texas, Les & Co. only | Seventy-Six, South | Duval | 7 | 23K | 35 | Jan 1993 – Sep 2023 |
| Duval County Ranch Co. -T- O-4-5472 | Production Resources, Inc. only | Petrox (Frio 1200 -B-) | Duval | 7 | 21.8K | 21 | Jan 1993 – Jun 2014 |
| Duval County Ranch Co. O-4-6439 | Cordele Development Corporation only | Neely, East (1130) | Duval | 2 | 18.8K | 172 | Jan 1993 – Mar 2026 |
| Duval County Ranch 578 G-4-293547 | Killam Oil Co., Ltd. only | Rich Hurt (Wx. Luling) | Duval | 1 | 15.3K | 450K | Jul 2022 – Jun 2025 |
| Duval County Ranch Co. -K- O-4-12347 | Texas Petroleum Investment Co. only | Charamousca,w(wilcox 3 Seg D LO) | Duval | 2 | 13.9K | 49.2K | Jun 1994 – Jun 1998 |
| Duval County Ranch Co. 'K' O-4-11792 | Texas Petroleum Investment Co. only | Charamousca, W. (Yegua 25) | Duval | 3 | 13.3K | 62.3K | Jan 1993 – Feb 1998 |
| Duval County Ranch - State O-4-2872 | L.T.D. Explorations Inc. only | Seventy-Six, West | Duval | 3 | 13K | 144 | Jan 1993 – Apr 2026 |
| Duval County Ranch Co. -B- Lease O-4-3623 | Hilcorp Energy Company only | Petrox (Government Wells) | Duval | 2 | 12.5K | 52 | Jan 1993 – May 1997 |
| Duval County Ranch Co. -K- O-4-7301 | Texas Petroleum Investment Co. only | Charamousca, W. (Wilcox 4, Lo.) | Duval | 1 | 12.4K | 36.7K | Jan 1993 – Aug 1997 |
| Duval County Ranch Co. Sec. 76 O-4-11561 | Dewbre, Jerry C., Trustee only | Seventy-Six | Duval | 4 | 12.2K | 21 | Jan 1993 – Apr 2026 |
| Duval County Ranch Co. -T- O-4-3599 | Gulftex Energy II, LP only | Petrox (Government Wells) | Duval | 4 | 11.2K | 21 | Jan 1993 – Jul 2008 |
| Duval County Ranch Company 4 G-4-241710 | Remora Operating, LLC only | Petrox (Lower Wilcox Cons.) | Duval | 1 | 11.1K | 1.04M | Jun 2008 – Apr 2026 |
| Duval County Ranch Co. G-4-101202 | Jenco Petroleum Corporation only | Lopez, NW (Wilcox) | Duval | 1 | 10.2K | 757K | Jan 1993 – Sep 2014 |
| Duval County Ranch O-4-553 | Winslow, Harry C. only | Colmena | Duval | 1 | 9.53K | 22 | Jan 1993 – Mar 1999 |
| Duval County Ranch Co. -K- O-4-12377 | Southwestern Energy Prod. Co. only | Charamousca, West (2200 Massive) | Duval | 1 | 7.86K | 23.3K | May 1994 – Feb 1998 |
| Duval County Ranch O-4-7711 | Energy 2000, Inc. only | Arnold-Mulle (Mirando, UP) | Duval | 1 | 6.48K | 103 | Jan 1993 – Jan 2002 |
| Duval County Ranch Co. -B- O-4-7884 | Energy 2000, Inc. only | Arnold-Mulle (Mirando, UP) | Duval | 2 | 3.8K | 108 | Jan 1993 – Jan 2002 |
| Duval County Ranch Co. -K- G-4-146160 | Southwestern Energy Prod. Co. only | Charamousca, W. (Wilcox 2 Seg C) | Duval | 1 | 2.59K | 315K | Mar 1993 – Feb 1998 |
| Duval County Ranch Co.'k' G-4-144189 | Texas Petroleum Investment Co. only | Charamousca, W.(wilcox 2) | Duval | 1 | 1.8K | 873K | Jan 1993 – May 1995 |
| Duval County Ranch Co. "A" O-4-10157 | Black Gold Operating Co, LLC only | Govt. Wells, N. (970 Sand) | Duval | 1 | 1.53K | 35 | Jan 1993 – Aug 2024 |
| Duval County Ranch Company -K- O-4-8560 | Exxon Corp. only | Charamousca, W.(wilcox 4, Seg D) | Duval | 1 | 1.52K | 6.9K | Jan 1993 – Apr 1994 |
| Duval County Ranch 578 O-4-14196 | Killam Oil Co., Ltd. only | Sarnosa, West | Duval | 1 | 1.15K | 0 | Feb 2023 – Apr 2026 |
| Duval County Ranch Co. -K- G-4-149494 | Texas Petroleum Investment Co. only | Charamousca, W.(wilcox 2) | Duval | 1 | 884 | 418K | Apr 1994 – May 1998 |
| Duval County Ranch-Ussery O-4-555 | Winslow, Harry C. only | Colmena | Duval | 2 | 772 | 21 | Jan 1993 – Feb 1996 |
| Duval County Ranch Co. -K- G-4-146159 | Texas Petroleum Investment Co. only | Charamousca, W. (Wilcox 2 Seg C) | Duval | 1 | 639 | 77.5K | Mar 1993 – Feb 1996 |
| Duval County Ranch Co. "K" O-4-11910 | Exxon Corp. only | Charamousca, West (Yegua 27) | Duval | 1 | 624 | 3.65K | Jan 1993 – Oct 1993 |
| Duval County Ranch Co. -K- G-4-148266 | Texas Petroleum Investment Co. only | Charamousca, W. (Wilcox 1, C) | Duval | 1 | 470 | 273K | Jan 1994 – May 2016 |
| Duval County Ranch Co. "K" G-4-144562 | Texas Petroleum Investment Co. only | Charamousca, W.(wilcox 2) | Duval | 1 | 455 | 210K | Feb 1993 – Aug 1993 |
| Duval County Ranch Co. -K- G-4-150241 | Texas Petroleum Investment Co. only | Charamousca, W. (Wilcox 3) | Duval | 1 | 442 | 84.6K | May 1994 – Jul 2000 |
| Duval County Ranch Co. "E" G-4-153686 | Exxon Corp. only | Piedre Lumbre (Wilcox) | Duval | 1 | 223 | 21K | Jan 1995 – May 1996 |
| Duval County Ranch Co. "E" G-4-153694 | Exxon Corp. only | Piedre Lumbre (Wilcox) | Duval | 1 | 217 | 12.6K | Feb 1995 – May 1996 |
| Duval County Ranch Co. -K- G-4-150094 | Texas Petroleum Investment Co. only | Charamousca, W. (Wilcox 2 Seg C) | Duval | 1 | 185 | 89.3K | Jun 1994 – Nov 1994 |