| Lyssy GU G-4-265360 | Lewis Petro Properties, Inc. only | Owen (Olmos) | La Salle | 1 | 81.9K | 983K | Jun 2011 – Feb 2026 |
| Ellen C. G-4-280786 | Caturus Energy, LLC only | Owen (Olmos) | Webb | 1 | 56.5K | 13.4M | Sep 2016 – Apr 2026 |
| Huisache Cattle Company "B" G-4-267735 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 54.9K | 2.21M | Nov 2011 – Apr 2026 |
| Huisache Cattle Company "B" G-4-271154 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 52K | 3.66M | Jun 2013 – Apr 2026 |
| Huisache Cattle Company 'B' G-4-274187 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 49.6K | 4.82M | Oct 2013 – Apr 2026 |
| Huisache Cattle Company "B" G-4-270197 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 46.1K | 4.13M | Nov 2012 – Apr 2026 |
| Santa Elena G-4-275600 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 45.9K | 4.84M | Aug 2014 – Apr 2026 |
| Lyssy 1370 G-4-270201 | Lewis Petro Properties, Inc. only | Owen (Olmos) | La Salle | 1 | 42.3K | 506K | Jan 2012 – Apr 2026 |
| Huisache Cattle Company "B" G-4-268987 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 41.4K | 4.07M | Apr 2012 – Apr 2024 |
| Huisache Cattle Company "B" G-4-264910 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 34.7K | 2.8M | Dec 2011 – Apr 2026 |
| Huisache Cattle Company "B" G-4-270713 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 33.6K | 2.64M | Nov 2012 – Apr 2026 |
| Santa Elena G-4-274270 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 31.6K | 3.75M | Dec 2013 – Apr 2026 |
| Vela State Unit G-4-274969 | Escondido Resources Oper Co, LLC only | Owen (Olmos) | Webb | 1 | 26.6K | 960K | Oct 2014 – Apr 2026 |
| Neel G-4-255451 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 24.6K | 341K | Jan 2010 – Apr 2026 |
| Santa Elena G-4-276144 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 21.5K | 2.1M | Aug 2014 – Apr 2026 |
| Retama Ranch G-4-274872 | Caturus Energy, LLC only | Owen (Olmos) | Webb | 1 | 21.4K | 4.67M | Jun 2014 – Apr 2026 |
| Neel G-4-268831 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 20.5K | 843K | Jan 2012 – Apr 2026 |
| Vela-Gilpin Unit G-4-276067 | Escondido Resources Oper Co, LLC only | Owen (Olmos) | Webb | 1 | 20K | 1.44M | Oct 2014 – Apr 2026 |
| La Moca Gas Unit H G-4-265516 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 19.1K | 2.85M | Jun 2011 – Mar 2026 |
| Huisache Cattle Co. B G-4-273105 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 18.6K | 1.44M | Jul 2013 – Apr 2026 |
| Santa Elena G-4-272554 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 18.3K | 2.36M | May 2013 – Apr 2026 |
| San Roman 1508 G-4-274185 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 18K | 1.97M | Nov 2013 – Apr 2026 |
| San Roman 1508 G-4-268969 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 18K | 3.09M | Jan 2013 – Apr 2026 |
| Santa Elena G-4-275615 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 18K | 2.53M | Aug 2014 – Apr 2026 |
| Long, J. S. G-4-270106 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 17.7K | 961K | Jun 2013 – Apr 2026 |
| Santa Elena G-4-274242 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 17.3K | 3.44M | Dec 2013 – Apr 2026 |
| San Roman 1508 G-4-274350 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 16.6K | 1.83M | Aug 2013 – Sep 2024 |
| Briscoe-Manry 1131 G-4-258940 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 15.4K | 589K | Apr 2010 – Apr 2026 |
| Briscoe-Manry 1469 G-4-259626 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 15.1K | 2.43M | Aug 2010 – Apr 2026 |
| Gilpin G-4-272527 | Escondido Resources Oper Co, LLC only | Owen (Olmos) | Webb | 1 | 15K | 2.27M | Oct 2013 – Apr 2026 |
| Ellen C. G-4-276249 | Caturus Energy, LLC only | Owen (Olmos) | Webb | 1 | 14.6K | 4.13M | Nov 2014 – Apr 2026 |
| San Roman 'A' G-4-274827 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 13.6K | 3.14M | May 2014 – Apr 2026 |
| Lyssy GU A G-4-270198 | Lewis Petro Properties, Inc. only | Owen (Olmos) | La Salle | 1 | 13K | 104K | Jun 2012 – Apr 2026 |
| Santa Elena G-4-274847 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 12.6K | 2.48M | Dec 2013 – Apr 2026 |
| Ellen C. G-4-277541 | Caturus Energy, LLC only | Owen (Olmos) | Webb | 1 | 12.5K | 4.63M | Nov 2016 – Apr 2026 |
| Huisache Cattle Company A G-4-274256 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 12.4K | 1.81M | Feb 2014 – Apr 2026 |
| Rosa V. Benavides G-4-269451 | Caturus Energy, LLC only | Owen (Olmos) | Webb | 1 | 12.1K | 973K | Jan 2013 – Apr 2026 |
| San Roman 1508 G-4-274186 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 12K | 787K | Dec 2013 – Apr 2026 |
| Briscoe-Manry 1393 G-4-266705 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 12K | 2.18M | Aug 2011 – Apr 2026 |
| Rosa V. Benavides G-4-256345 | Caturus Energy, LLC only | Owen (Olmos) | Webb | 1 | 11.9K | 1.22M | Feb 2010 – Apr 2026 |
| Gilpin G-4-271224 | Escondido Resources Oper Co, LLC only | Owen (Olmos) | Webb | 1 | 11.9K | 2.11M | Oct 2013 – Apr 2026 |
| Santa Elena G-4-272322 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 11.3K | 2.56M | Nov 2012 – Apr 2026 |
| Briscoe-Manry 1469 G-4-267347 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 11.2K | 1.49M | Oct 2011 – Apr 2026 |
| Briscoe-Manry 1469 G-4-267351 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 11.1K | 1.59M | Oct 2011 – Apr 2026 |
| La Moca Gas Unit F G-4-261873 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 10.9K | 2.48M | Mar 2011 – Apr 2026 |
| Briscoe-Manry 1469 G-4-256727 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 10.9K | 1.64M | Apr 2010 – Apr 2026 |
| Slaughter G-4-272560 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 10.6K | 876K | Jul 2013 – Apr 2026 |
| Retama Ranch G-4-282458 | Caturus Energy, LLC only | Owen (Olmos) | Webb | 1 | 10.5K | 3.68M | Aug 2017 – Apr 2026 |
| Long, J.S. G-4-274295 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 10.5K | 1.08M | Jan 2014 – Apr 2026 |
| Hachar, N. D. Heirs G-4-252118 | Lewis Petro Properties, Inc. only | Owen (Olmos) | Webb | 1 | 10.4K | 2.15M | Jul 2009 – Apr 2026 |