| Seeligson Unit O-4-6280 | Sue-Ann Operating, L.C. only | Seeligson (Combined Zones) | Jim Wells | 200 | 1.31M | 6.67M | by Jan 1993 – Aug 2026 |
| Wardner, G.P. O-4-12618 | Urban Oil & Gas Group, LLC only | Stratton (Consolidated) | Nueces | 52 | 856K | 6.63M | May 1996 – Aug 2026 |
| King Ranch Alazan O-4-12745 | EOG Resources, Inc. only | Alazan (Frio Cons.) | Kleberg | 18 | 810K | 1.2M | Jul 1997 – Mar 2020 |
| Borregos, K. R. & Seeligson O-4-6544 | EOG Resources, Inc. only | Borregos (Combined Zones) | Kleberg | 197 | 550K | 3.47M | by Jan 1993 – Feb 2024 |
| Canales, A.T. O-4-12215 | Remora Operating, LLC only | T-C-B (H-61 West) | Kleberg | 6 | 491K | 1.53M | Jun 1993 – Aug 2026 |
| 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 | by Jan 1993 – Apr 2002 |
| King Ranch Los Sauces O-4-9733 | EOG Resources, Inc. only | Bishop, E. (H-71) | Kleberg | 1 | 287K | 158K | by Jan 1993 – Jul 2024 |
| King Ranch Alazan O-4-6999 | Exxon Corp. only | Alazan, North (All Zones) | Kleberg | 128 | 256K | 118K | by 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 |
| State Tract 169 O-4-12128 | Totalfinaelf E&P USA Inc only | Bird Island (10-a Seg A) | Kleberg | 2 | 225K | 287K | by 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 |
| Yaklin 7400' Oil Unit O-4-12235 | Tejas Petroleum Resources, LLC only | Yeary (7400 Sand) | Kleberg | 1 | 149K | 55.2K | Jun 1993 – Sep 2016 |
| King Ranch Vadero O-4-14277 | Headington Energy Partners, LLC only | Alazan, North (Deep Frio) | Kleberg | 1 | 131K | 263K | Mar 2026 – Aug 2026 |
| 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 |
| King Ranch Tijerina-Laguna Larga O-4-8935 | EOG Resources, Inc. only | T-C-B, E. (20-I-3) | Kleberg | 12 | 118K | 244K | by Jan 1993 – Oct 2016 |
| King Ranch Alazan O-4-6998 | Exxon Corp. only | Alazan (All Zones) | Kleberg | 34 | 116K | 129K | by 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 Borregos O-4-14153 | EOG Resources, Inc. only | Krb\zuni-NC (Vxbg) | Kleberg | 1 | 95.8K | 491K | Sep 2018 – Aug 2026 |
| King Ranch Borregos O-4-8950 | EOG Resources, Inc. only | Escondido Creek (20-I-1) | Kleberg | 4 | 85.7K | 102K | by Jan 1993 – Sep 2019 |
| King Ranch Tijerina O-4-13734 | EOG Resources, Inc. only | T-C-B, E (20-I-4, N) | Kleberg | 1 | 81.7K | 471K | Mar 2012 – Jul 2020 |
| State Tract -156- O-4-252 | Totalfinaelf E&P USA Inc only | Bird Island | Kleberg | 1 | 78K | 310K | by Jan 1993 – Sep 2001 |
| King Ranch Seeligson O-4-13674 | EOG Resources, Inc. only | T-C-B, E (20-I-4) | Kleberg | 1 | 77.8K | 455K | May 2011 – Nov 2016 |
| Canales, A. T. O-4-13947 | Remora Operating, LLC only | Tijerina-Canales-Blucher ( H-58) | Kleberg | 1 | 69.5K | 55.2K | Jun 2014 – Aug 2026 |
| King Ranch Stratton O-4-8200 | EOG Resources, Inc. only | Stratton (Austin, Upper,sw) | Kleberg | 2 | 55.3K | 60.2K | by Jan 1993 – Nov 2013 |
| King Ranch Seeligson O-4-13684 | EOG Resources, Inc. only | T.-C.-B. 21 (B-1) North | Kleberg | 3 | 53.7K | 150K | May 2011 – Jun 2015 |
| Wardner O-4-11428 | Union Pacific Resources Company only | Stratton (F-39-11) | Nueces | 4 | 51K | 255K | by Jan 1993 – Oct 1996 |
| King Ranch Headquarters O-4-10420 | Exxon Mobil Corporation only | Big Caesar, West (H-37) | Kleberg | 1 | 40.8K | 7.16K | by Jan 1993 – Apr 2002 |
| Wardner, G. P. O-4-12397 | Apache Corporation only | Stratton (F-31) | Kleberg | 2 | 39.9K | 109K | Oct 1994 – Oct 1996 |
| Schonefeld -B- O-4-5987 | Dewbre Petroleum Corporation only | May (5 Sand, Middle) | Kleberg | 1 | 38.7K | 99.2K | by Jan 1993 – May 2002 |
| King Ranch Seeligson O-4-11377 | Exxon Mobil Corporation only | T-C-B, E. (20-I-4, NE,3 ) | Kleberg | 5 | 37.4K | 54.8K | by Jan 1993 – Dec 1998 |
| Canales, A. T. O-4-8461 | Remora Operating, LLC only | Zone 21-B Trend (Oil) | Jim Wells | 7 | 33.3K | 228K | by Jan 1993 – Nov 2016 |
| Baffin Bay State Tract 83 O-4-13150 | Tejas Petroleum Resources, LLC only | Del Grullo (9100 Sand) | Kleberg | 1 | 33.2K | 13.2K | Jan 2003 – Aug 2016 |
| King Ranch Borregos O-4-14127 | EOG Resources, Inc. only | Borregos (Combined Zones) | Jim Wells | 2 | 31.1K | 47.8K | Nov 2018 – Mar 2024 |
| King Ranch Tijerina O-4-8453 | EOG Resources, Inc. only | T.-C.-B. 21 (B-1) North | Kleberg | 16 | 30.5K | 428K | by Jan 1993 – Mar 1999 |
| King Ranch Laguna Larga O-4-13745 | EOG Resources, Inc. only | Tijerina-Canales-Blucher ( H-63) | Kleberg | 2 | 28.6K | 15.4K | Mar 2013 – Sep 2018 |
| King Ranch Seeligson O-4-8455 | Logas Energy, LLC only | Zone 21-B Trend (Oil) | Kleberg | 18 | 27K | 14K | by Jan 1993 – Apr 2002 |
| King Ranch Borregos O-4-10522 | Exxon Mobil Corporation only | Escondido Creek (20-I-1, SW) | Kleberg | 1 | 25.5K | 56.8K | by Jan 1993 – Mar 2002 |
| Kleberg, R. J., Jr. O-4-7321 | Forbes, John Operating only | Kingsville (2500) | Kleberg | 1 | 24.1K | 1.49K | by Jan 1993 – Jul 2007 |
| State Tract -155- O-4-251 | Fina Oil & Chemical Company only | Bird Island | Kleberg | 1 | 23.6K | 157K | by Jan 1993 – Jul 2000 |
| King Ranch Stratton O-4-8402 | Exxon Mobil Corporation only | Stratton (7100, T-5) | Kleberg | 2 | 23.3K | 6.99K | by Jan 1993 – Apr 2002 |
| King Ranch Stratton O-4-12617 | EOG Resources, Inc. only | Stratton (Consolidated) | Kleberg | 13 | 22K | 98.5K | Nov 1996 – May 2019 |
| King Ranch West Borregos O-4-7875 | Exxon Mobil Corporation only | Borregos, West (Seg C F-82) | Kleberg | 1 | 19.4K | 26.5K | by Jan 1993 – Jul 2005 |
| King Ranch Stratton O-4-9776 | Exxon Mobil Corporation only | Stratton (Sellers 4, SW) | Kleberg | 2 | 18.6K | 11.4K | May 1997 – Oct 2003 |
| King Ranch Morgan O-4-10707 | Exxon Mobil Corporation only | Magnolia City (F-77) | Kleberg | 1 | 18.4K | 23.4K | by Jan 1993 – Aug 1998 |
| Flato O-4-13959 | Dewbre Petroleum Corporation only | Ricardo, E. (5100) | Kleberg | 1 | 18.2K | 0 | Jan 2015 – Aug 2026 |
| King Ranch Canelo O-4-13659 | EOG Resources, Inc. only | Canelo (Frio H-I Sand) | Kleberg | 1 | 17.4K | 155K | Dec 2010 – Jun 2013 |
| King Ranch Stratton O-4-7820 | Exxon Mobil Corporation only | Stratton (Wardner West, C.) | Kleberg | 5 | 17.1K | 46.4K | by Jan 1993 – Mar 2006 |
| King Ranch Alazan O-4-12457 | Exxon Mobil Corporation only | Hinojosa, N. (F-25) | Kleberg | 1 | 16.7K | 25.9K | Apr 1995 – Nov 2000 |