| Seeligson Unit O-4-6280 | Sue-Ann Operating, L.C. only | Seeligson (Combined Zones) | Jim Wells | 200 | 1.3M | 6.67M | Jan 1993 – Apr 2026 |
| Wardner, G.P. O-4-12618 | Urban Oil & Gas Group, LLC only | Stratton (Consolidated) | Nueces | 52 | 855K | 6.61M | May 1996 – Apr 2026 |
| King Ranch Alazan O-4-12745 | EOG Resources, Inc. only | Alazan (Frio Cons.) | Kleberg | 18 | 810K | 1.2M | Jul 1997 – Mar 2020 |
| Otto Gas Unit No. 1 G-4-195099 | Roy Jackson Energy Operating, LL only | Kingsville, SW (Cochiti) | Kleberg | 1 | 556K | 2.56M | May 2003 – Dec 2023 |
| Borregos, K. R. & Seeligson O-4-6544 | EOG Resources, Inc. only | Borregos (Combined Zones) | Kleberg | 197 | 550K | 3.47M | Jan 1993 – Feb 2024 |
| Smith Gas Unit 1 G-4-187132 | Roy Jackson Energy Operating, LL only | Kingsville, SW (Cochiti) | Kleberg | 1 | 493K | 3.78M | Oct 2001 – May 2017 |
| Canales, A.T. O-4-12215 | Remora Operating, LLC only | T-C-B (H-61 West) | Kleberg | 6 | 491K | 1.53M | Jun 1993 – Apr 2026 |
| Jesuit Gas Unit G-4-225391 | Finaly Resources LLC only | Jesuit (Loyola Beach) | Kleberg | 1 | 477K | 9.38M | Sep 2006 – Mar 2026 |
| Smith Gas Unit 1 G-4-193119 | Roy Jackson Energy Operating, LL only | Kingsville, SW (Cochiti) | Kleberg | 1 | 363K | 2.09M | Jan 2003 – Dec 2023 |
| King Ranch Alazan O-4-12743 | EOG Resources, Inc. only | Alazan, North (Frio Cons.) | Kleberg | 42 | 340K | 620K | Jul 1997 – Mar 2020 |
| King Ranch Seeligson O-4-11545 | EOG Resources, Inc. only | T-C-B, E. (20-I-4, NE, 2 Seg.) | Kleberg | 4 | 292K | 334K | Jan 1993 – Apr 2002 |
| King Ranch Los Sauces O-4-9733 | EOG Resources, Inc. only | Bishop, E. (H-71) | Kleberg | 1 | 287K | 158K | Jan 1993 – Jul 2024 |
| Walker Gas Unit 1 G-4-192179 | Roy Jackson Energy Operating, LL only | Kingsville, SW (Taos) | Kleberg | 1 | 270K | 8.82M | Nov 2002 – Dec 2008 |
| King Ranch Alazan O-4-6999 | Exxon Corp. only | Alazan, North (All Zones) | Kleberg | 128 | 256K | 118K | Jan 1993 – Jun 1997 |
| King Ranch Big Caesar O-4-13783 | EOG Resources, Inc. only | Big Caesar, SE. (Seg C Manning) | Kleberg | 2 | 256K | 2.28K | Apr 2013 – Dec 2024 |
| King Ranch Borregos G-4-274349 | EOG Resources, Inc. only | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 250K | 5.27M | Apr 2014 – Apr 2026 |
| Bevan Bros. G-4-188525 | OXY USA Inc. only | Kingsville, SW (Cochiti) | Kleberg | 1 | 231K | 1.2M | Feb 2002 – Oct 2011 |
| State Tract 169 O-4-12128 | Totalfinaelf E&P USA Inc only | Bird Island (10-a Seg A) | Kleberg | 2 | 225K | 287K | Jan 1993 – Sep 2001 |
| King Ranch Lobo O-4-13652 | EOG Resources, Inc. only | Alazan, North (Frio Cons.) | Kleberg | 1 | 224K | 189K | Jun 2011 – Aug 2016 |
| Walker Gas Unit 1 G-4-191422 | Roy Jackson Energy Operating, LL only | Kingsville, SW (Taos) | Kleberg | 1 | 214K | 6.38M | Aug 2002 – May 2017 |
| King Ranch Borregos G-4-190655 | EOG Resources, Inc. only | Kingsville, SW (Taos) | Kleberg | 1 | 202K | 4.99M | Aug 2002 – Jul 2013 |
| King Ranch Borregos G-4-190012 | EOG Resources, Inc. only | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 177K | 4.96M | Jan 2002 – Nov 2017 |
| Canales, E.G. G-4-156689 | Remora Operating, LLC only | T-C-B (Vxbg Consolidated) | Kleberg | 1 | 174K | 3.45M | Mar 1995 – Apr 2026 |
| Jesuit Gas Unit G-4-244684 | Finaly Resources LLC only | Jesuit (Loyola Beach) | Kleberg | 1 | 160K | 5.37M | May 2008 – Aug 2024 |
| King Ranch Borregos G-4-267677 | EOG Resources, Inc. only | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 159K | 3.47M | May 2012 – Dec 2024 |
| Yaklin 7400' Oil Unit O-4-12235 | Tejas Petroleum Resources, LLC only | Yeary (7400 Sand) | Kleberg | 1 | 149K | 55.2K | Jun 1993 – Sep 2016 |
| Smith Gas Unit 1 G-4-190615 | Roy Jackson Energy Operating, LL only | Kingsville, SW (Cochiti) | Kleberg | 1 | 139K | 979K | Mar 2002 – Apr 2006 |
| King Ranch Visnaga G-4-295280 | Headington Energy Partners, LLC only | Alazan, North (Deep Frio) | Kleberg | 1 | 127K | 879K | Mar 2023 – Apr 2026 |
| King Ranch Tijerina G-4-276033 | EOG Resources, Inc. only | T-C-B (Vxbg Consolidated) | Kleberg | 1 | 124K | 6.14M | Feb 2015 – Apr 2026 |
| Smith Gas Unit 1 G-4-196968 | OXY USA Inc. only | Kingsville, SW (Cochiti) | Kleberg | 1 | 124K | 947K | Jul 2003 – Jan 2013 |
| Wenner - State Tract 82 O-4-12172 | Tejas Petroleum Resources, LLC only | Yeary (7400 Sand) | Kleberg | 1 | 123K | 72.5K | Mar 1993 – Sep 2016 |
| King Ranch Tijerina O-4-13658 | EOG Resources, Inc. only | T-C-B, E (20-I-4) | Kleberg | 3 | 120K | 1.85M | Jan 2011 – Nov 2019 |
| Smith Gas Unit 1 G-4-192504 | Roy Jackson Energy Operating, LL only | Kingsville, SW (Cochiti) | Kleberg | 1 | 119K | 1.34M | Aug 2002 – Aug 2004 |
| King Ranch Tijerina-Laguna Larga O-4-8935 | EOG Resources, Inc. only | T-C-B, E. (20-I-3) | Kleberg | 12 | 118K | 244K | Jan 1993 – Oct 2016 |
| King Ranch Madero South G-4-297068 | Headington Energy Partners, LLC only | Alazan, North (Deep Frio) | Kleberg | 1 | 118K | 475K | Oct 2023 – Apr 2026 |
| King Ranch Alazan O-4-6998 | Exxon Corp. only | Alazan (All Zones) | Kleberg | 34 | 116K | 129K | Jan 1993 – Jun 1997 |
| Fimble 7400' Oil Unit O-4-12280 | Tejas Petroleum Resources, LLC only | Yeary (7400 Sand) | Kleberg | 1 | 115K | 52K | Aug 1993 – Sep 2016 |
| King Ranch Visnaga G-4-295266 | Headington Energy Partners, LLC only | Alazan, North (Deep Frio) | Kleberg | 1 | 107K | 1.25M | Oct 2022 – Apr 2026 |
| King Ranch Borregos G-4-189676 | EOG Resources, Inc. only | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 106K | 4.47M | Jan 2002 – Jan 2020 |
| Otto Gas Unit No. 1 G-4-194247 | Roy Jackson Energy Operating, LL only | Kingsville, SW (Cochiti) | Kleberg | 1 | 101K | 416K | Mar 2003 – Sep 2023 |
| King Ranch Borregos G-4-195064 | EOG Resources, Inc. only | Kingsville, SW (Taos) | Kleberg | 1 | 99.9K | 2.13M | Mar 2003 – Jan 2008 |
| King Ranch Borregos G-4-275673 | EOG Resources, Inc. only | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 98.1K | 2.87M | Jul 2014 – Jul 2025 |
| King Ranch Borregos O-4-14153 | EOG Resources, Inc. only | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 94.8K | 482K | Sep 2018 – Apr 2026 |
| King Ranch Borregos G-4-276245 | EOG Resources, Inc. only | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 91.5K | 1.65M | Jan 2015 – Apr 2026 |
| Yeary G-4-189833 | Roy Jackson Energy Operating, LL only | Kingsville, SW (Taos) | Kleberg | 1 | 87.7K | 1.58M | Apr 2002 – Jun 2017 |
| King Ranch Canelo G-4-259317 | EOG Resources, Inc. only | Kr\boa (VX Cons.) | Kleberg | 1 | 86.2K | 4.24M | Jan 2011 – Apr 2026 |
| King Ranch Borregos O-4-8950 | EOG Resources, Inc. only | Escondido Creek (20-I-1) | Kleberg | 4 | 85.7K | 102K | Jan 1993 – Sep 2019 |
| King Ranch Minerals G-4-213685 | Blue Wing Energy, Inc. only | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 84.8K | 1.85M | Aug 2005 – Mar 2020 |
| King Ranch Borregos G-4-191780 | EOG Resources, Inc. only | Kingsville, SW (Taos) | Kleberg | 1 | 84.1K | 1.56M | Oct 2002 – Mar 2007 |
| King Ranch Borregos G-4-268017 | EOG Resources, Inc. only | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 83.9K | 1.01M | Jan 2012 – May 2016 |