| Normanna Townsite O-2-8128 | Cimarron Engineering, LLC | Normanna (Hockley 3525) | Bee | 1 | 258K | 3.95K | Nov 1995 – Apr 2026 |
| Granberry O-2-9109 | Cimarron Engineering, LLC | Paisano Creek (2ND Yegua) | Live Oak | 1 | 91.7K | 109K | Jul 2006 – Apr 2026 |
| Hendricks O-4-14229 | Cimarron Engineering, LLC | Alice, SE. (Scheel) | Jim Wells | 1 | 45.1K | 0 | Jul 2023 – Apr 2026 |
| Messer, W.H. Jr. et Al O-2-6453 | Cimarron Engineering, LLC | Bonnie View, South (5300) | Refugio | 1 | 41.3K | 20 | Jan 1993 – Feb 2016 |
| Westhoff & McCrory O-2-11044 | Cimarron Engineering, LLC | Mauritz, West (5400) | Jackson | 1 | 35.9K | 0 | Mar 2015 – Apr 2026 |
| McCaslin, Charles L. O-2-4047 | Cimarron Engineering, LLC | Ramirena, SW. (Yegua 3) | Live Oak | 3 | 35.4K | 46.8K | Jan 1993 – Oct 2014 |
| Lehman O-4-13319 | Cimarron Engineering, LLC | London, West (Frio-Horne) | Nueces | 1 | 33.2K | 0 | Aug 2005 – Aug 2015 |
| McCaslin, Charles L. O-2-5661 | Cimarron Engineering, LLC | Ramirena SW (Yeg 3, UP, Seg E) | Live Oak | 1 | 32K | 79.9K | Jan 1993 – Oct 2014 |
| Hartman O-2-10352 | Cimarron Engineering, LLC | Arneckeville (Yegua 4910) | De Witt | 1 | 30K | 0 | Sep 2012 – Apr 2026 |
| Hendricks A O-4-14244 | Cimarron Engineering, LLC | Alice, SE. (Scheel) | Jim Wells | 1 | 23.9K | 0 | Jun 2024 – Apr 2026 |
| Davidson, Mary O-2-8836 | Cimarron Engineering, LLC | Ramirena, SW. (Yegua #2 Sd.) | Live Oak | 1 | 23.6K | 48.3K | Oct 2003 – Aug 2021 |
| McCaslin, Charles L. O-2-8263 | Cimarron Engineering, LLC | Ramirena, S.W. (5500 Sec B) | Live Oak | 1 | 21.9K | 32.8K | Feb 1997 – Feb 2024 |
| Reynolds, Mary A. O-2-2015 | Cimarron Engineering, LLC | Ramirena, SW. (Sec. B, a Sand) | Live Oak | 2 | 21.3K | 9.17K | Jan 1996 – Sep 2014 |
| LJ O-2-11842 | Cimarron Engineering, LLC | Jackson Ranch (Yegua 5400) | Live Oak | 1 | 19.6K | 0 | Oct 2019 – Apr 2026 |
| McCaslin, Charles O-2-7181 | Cimarron Engineering, LLC | Ramirena, SW. (Yegua 3, Upper) | Live Oak | 1 | 19.2K | 75.9K | Jan 1993 – May 2018 |
| Vanover O-4-14191 | Cimarron Engineering, LLC | Al Smith (Vicksburg) | Jim Wells | 1 | 13.2K | 1.58K | Jan 2023 – Apr 2026 |
| Elliott Farms O-14-9142 | Cimarron Engineering, LLC | Farnsworth-Conner (Kansas City) | Ochiltree | 1 | 13.1K | 13.3K | Aug 2014 – Apr 2026 |
| Lehman O-4-13524 | Cimarron Engineering, LLC | London Gin (Mass. Catahoula) | Nueces | 1 | 12.6K | 0 | Dec 2008 – Jul 2015 |
| Atkinson O-1-14634 | Cimarron Engineering, LLC | Loma Alta | McMullen | 1 | 12.4K | 0 | Sep 2005 – Jul 2015 |
| Parsell Ranch O-14-9204 | Cimarron Engineering, LLC | St. Clair (Granite Wash) | Roberts | 1 | 10.8K | 2.56K | Aug 2014 – Apr 2026 |
| Curtiss O-2-12158 | Cimarron Engineering, LLC | Ramirena (5000) | Live Oak | 1 | 8.99K | 0 | Mar 2021 – Jun 2023 |
| Bitterly O-2-10771 | Cimarron Engineering, LLC | Arneckeville (Yegua 4870,E) | De Witt | 1 | 8.64K | 0 | Feb 2014 – Mar 2019 |
| Reynolds, Mary A. O-2-7614 | Cimarron Engineering, LLC | Ramirena, SW. (D-58) | Live Oak | 1 | 8K | 5K | Dec 1995 – Oct 2014 |
| Parham O-4-13470 | Cimarron Engineering, LLC | King Ranch, W. (Miocene 6000) | Willacy | 1 | 6.96K | 0 | Dec 2007 – Feb 2014 |
| McNeil O-2-8641 | Cimarron Engineering, LLC | Jackson Ranch (Yegua 5400) | Live Oak | 1 | 5.97K | 99.9K | Mar 2001 – Jan 2019 |
| HLR O-3-27730 | Cimarron Engineering, LLC | Hartburg | Newton | 1 | 5.4K | 1 | Feb 2020 – Dec 2022 |
| Thamm Trust O-2-10890 | Cimarron Engineering, LLC | Arneckeville (Yegua 4910) | De Witt | 1 | 4.86K | 0 | Apr 2014 – Mar 2019 |
| Acl O-4-14011 | Cimarron Engineering, LLC | Alice, North (5150) | Jim Wells | 1 | 3.52K | 24.3K | Jan 2017 – Mar 2020 |
| Mosser O-4-14195 | Cimarron Engineering, LLC | Reynolds (Pundt) | Jim Wells | 1 | 2.33K | 0 | Feb 2023 – May 2024 |
| H. Blackstone O-3-28084 | Cimarron Engineering, LLC | Chocolate Bayou ( Alibel) | Brazoria | 1 | 1.9K | 41.7K | Apr 2023 – Dec 2023 |
| Bazan O-4-13936 | Cimarron Engineering, LLC | Orcones (Frio-Vksbg Cons.) | Duval | 1 | 1.78K | 0 | Dec 2014 – Feb 2019 |
| Sherwood, Ollie O-2-1069 | Cimarron Engineering, LLC | Mineral, West (Forney Sand) | Bee | 1 | 1.65K | 635 | Jan 1993 – Feb 2017 |
| Chippo O-4-14273 | Cimarron Engineering, LLC | Captain Lucey (Pundt) | Jim Wells | 1 | 1.21K | 0 | Nov 2025 – Apr 2026 |
| Klatt Heirs O-4-14118 | Cimarron Engineering, LLC | Quinto Creek (3800) | Jim Wells | 1 | 548 | 0 | Jul 2019 – Sep 2019 |
| Seidel O-4-14086 | Cimarron Engineering, LLC | Wade City (Alice) | Jim Wells | 1 | 363 | 141K | Jul 2018 – Feb 2021 |
| Marek-Whitley O-2-11924 | Cimarron Engineering, LLC | Circle -B- (5000) | Goliad | 1 | 352 | 0 | Jan 2020 – Mar 2020 |
| Zengerle O-2-12674 | Cimarron Engineering, LLC | Arneckeville (Yegua 4910) | De Witt | 1 | 321 | 0 | May 2023 – May 2024 |
| Lehman "A" O-4-12833 | Cimarron Engineering, LLC | London Gin, N. (4730 Sand) | Nueces | 2 | 290 | 0 | Dec 1997 – Oct 2001 |
| Rose O-4-14266 | Cimarron Engineering, LLC | Magnolia City, N. (Seg a E-89) | Jim Wells | 1 | 288 | 0 | Mar 2025 – Oct 2025 |
| Labbe Heirs O-4-14087 | Cimarron Engineering, LLC | Labbe | Duval | 1 | 252 | 0 | May 2018 – Sep 2018 |
| Klatt O-4-14161 | Cimarron Engineering, LLC | San Patricio (Vicksburg 6100) | San Patricio | 1 | 227 | 0 | Sep 2021 – Nov 2021 |
| Orange Grove Farms O-4-14072 | Cimarron Engineering, LLC | Richard King (Frio Cons.) | Nueces | 1 | 166 | 0 | Nov 2017 – Nov 2017 |
| Crane O-4-14231 | Cimarron Engineering, LLC | Agua Dulce (Consolidated Frio) | Nueces | 1 | 53 | 0 | Dec 2023 – Apr 2024 |
| Jarzombek O-1-21035 | Cimarron Engineering, LLC | Stockdale (Poth A) | Wilson | 1 | 0 | 0 | — |
| Orange Grove Farms O-4-14099 | Cimarron Engineering, LLC | Farenthold | Nueces | 1 | 0 | 0 | — |
| Vickers O-4-14104 | Cimarron Engineering, LLC | Cotton (Frio 7450) | Nueces | 1 | 0 | 0 | — |
| Cardwell O-4-14107 | Cimarron Engineering, LLC | Riverside, South (Ocker Sand) | Nueces | 1 | 0 | 0 | — |
| STV O-3-27942 | Cimarron Engineering, LLC | Cistern | Fayette | 2 | 0 | 0 | — |
| Baptist Foundation O-4-14207 | Cimarron Engineering, LLC | Alice | Jim Wells | 1 | 0 | 0 | — |
| K. McDonald O-2-12592 | Cimarron Engineering, LLC | Berkow (Kohler) | Bee | 1 | 0 | 0 | — |