| I.V. Montalvo 'C' O-4-14050 | Killam Oil Co., Ltd. only | Sun, North (Vicksburg 5980) | Starr | 7 | 378K | 692K | Jul 2017 – Mar 2025 |
| Montalvo, I.V. -C- O-4-11649 | Kerr-McGee Oil & Gas Onshore LLC only | Sun, North (5810) | Starr | 1 | 110K | 103K | Jan 1993 – Jun 2003 |
| I. V. Montalvo 'C' O-4-14026 | Killam Oil Co., Ltd. only | Sun, North (5810) | Starr | 2 | 69.3K | 253K | Feb 2017 – Oct 2025 |
| I. V. Montalvo 'C' O-4-14004 | Killam Oil Co., Ltd. only | Sun,north (5470) | Starr | 2 | 67.7K | 164K | Nov 2016 – Apr 2026 |
| Montalvo, N. R. O-4-12729 | Reh Energy, Inc. only | Sun (H-1 M-P) | Starr | 1 | 42.8K | 293K | Sep 1997 – Apr 2000 |
| Montalvo, Gabriel O-11-69511 | Crescent Energy Operating, LLC only | Robertson, N. (Clear Fork 7100) | Gaines | 2 | 41.1K | 0 | Sep 2009 – Mar 2018 |
| Montalvo, N. R. O-4-13431 | Kerr-McGee Oil & Gas Onshore LP only | Sun, North (6250) | Starr | 1 | 32K | 89K | Dec 2006 – Sep 2009 |
| Montalvo, N. R. G-4-195853 | Kerr-McGee Oil & Gas Onshore LLC only | Sun, North (7020 Sand) | Starr | 1 | 23.9K | 250K | Jul 2003 – Feb 2005 |
| Montalvo, N. R. O-4-10909 | Kerr-McGee Oil & Gas Onshore LP only | Sun, North (F-3-D, Seg. 3) | Starr | 2 | 21.7K | 102K | Jan 1993 – Oct 2001 |
| Montalvo, C. G-4-157402 | Cody Energy LLC only | Mestena Grande (Pettus) | Jim Hogg | 1 | 17.8K | 1.55M | Mar 1996 – Feb 2004 |
| Montalvo, Roldan G-4-109567 | Bordertown Energy Resources, LLC only | Mestena Grande (Queen City Cons) | Jim Hogg | 1 | 17.4K | 560K | Jan 1993 – Apr 2015 |
| Montalvo 'B' Unit O-4-14069 | Killam Oil Co., Ltd. only | Sun, North (Vicksburg 6410) | Starr | 1 | 17.2K | 27.9K | Dec 2017 – Apr 2026 |
| Montalvo G-4-185573 | Swift Energy Operating, LLC only | I. Y. Garcia (Frio JG) | Kenedy | 1 | 15.6K | 311K | Sep 2001 – Jun 2006 |
| I.V. Montalvo 'C' G-4-287266 | Killam Oil Co., Ltd. only | Sun, North (5810) | Starr | 1 | 10.1K | 282K | May 2019 – Sep 2020 |
| Garza - Montalvo Gas Unit G-4-130461 | Killam Oil Co., Ltd. only | Sun, North (Garza) | Starr | 1 | 10K | 1.26M | Jan 1993 – Apr 2026 |
| Montalvo, N. R. O-4-3065 | Reh Energy, Inc. only | Sun | Starr | 4 | 9.76K | 1.08K | Jan 1993 – Apr 2005 |
| Montalvo, N. R. G-4-185911 | Kerr-McGee Oil & Gas Onshore LLC only | Sun, North (Vicksburg 5960) | Starr | 1 | 8.76K | 1.12M | Nov 2001 – Apr 2004 |
| I.V. Montalvo 'C' O-4-14095 | Killam Oil Co., Ltd. only | Sun, North (Vicksburg 6410) | Starr | 1 | 7.3K | 8.15K | Jun 2018 – Nov 2019 |
| Montalvo, N. R. O-4-14259 | Triad O&G, LLC only | Sun (H-1 M-P) | Starr | 1 | 6.94K | 1.93K | Feb 2025 – Mar 2026 |
| I.V. Montalvo 'A' O-4-14129 | Killam Oil Co., Ltd. only | Sun, North (5810) | Starr | 1 | 6.83K | 32.1K | May 2019 – Jan 2024 |
| Montalvo Heirs 'B' O-4-13886 | Killam Oil Co., Ltd. only | Sun, North (5410) | Starr | 1 | 4.93K | 7.98K | Jun 2014 – Aug 2014 |
| I. V. Montalvo 'C' G-4-274231 | Killam Oil Co., Ltd. only | Sun, North (5810) | Starr | 1 | 4.84K | 611K | Dec 2013 – Jul 2016 |
| I.V. Montalvo 'C' G-4-284712 | Killam Oil Co., Ltd. only | Sun, North (5810) | Starr | 1 | 4.39K | 107K | Aug 2018 – Mar 2019 |
| I.V. Montalvo 'C' O-4-14154 | Killam Oil Co., Ltd. only | Sun, North (5410) | Starr | 1 | 4.31K | 14.7K | Apr 2021 – Jun 2025 |
| I.V. Montalvo 'C' G-4-281269 | Killam Oil Co., Ltd. only | Sun, North (6340) | Starr | 1 | 3.68K | 231K | Oct 2016 – Feb 2018 |
| Montalvo 'B' (North) Unit G-4-291593 | Killam Oil Co., Ltd. only | Sun,north (5470) | Starr | 1 | 3.02K | 465K | Oct 2021 – Apr 2026 |
| I.V. Montalvo 'C' G-4-290549 | Killam Oil Co., Ltd. only | Sun, North (5400) | Starr | 1 | 2.51K | 167K | Mar 2021 – Mar 2024 |
| Montalvo, N. R. O-4-13384 | Kerr-McGee Oil & Gas Onshore LP only | Sun, North (F-3-D) | Starr | 1 | 2.49K | 3.68K | Jul 2006 – Oct 2007 |
| Montalvo, E. A. Gas Unit G-4-14458 | Kerr-McGee Oil & Gas Onshore LLC only | Sun, North (Garza) | Starr | 1 | 2.32K | 214K | Jan 1993 – Nov 2003 |
| I.V. Montalvo 'C' O-4-14256 | Killam Oil Co., Ltd. only | Sun, North (F-3-G) | Starr | 1 | 2.27K | 3.96K | Jul 2024 – Apr 2026 |
| Montalvo, N. R. O-4-14247 | Triad O&G, LLC only | Sun (5680) | Starr | 1 | 2.21K | 1.21K | Jul 2024 – Nov 2024 |
| I.V. Montalvo 'C' G-4-281263 | Killam Oil Co., Ltd. only | Sun, North (6340) | Starr | 1 | 2.16K | 216K | Oct 2016 – Jun 2017 |
| Garza - Montalvo Gas Unit G-4-126939 | Killam Oil Co., Ltd. only | Sun, North (Garza) | Starr | 1 | 2.1K | 423K | Jan 1993 – Mar 2013 |
| I.V. Montalvo 'A' O-4-14274 | Killam Oil Co., Ltd. only | Sun, North (F-3-G) | Starr | 1 | 2.05K | 15.8K | Feb 2026 – Apr 2026 |
| Montalvo, I. V. -A- G-4-258744 | Killam Oil Co., Ltd. only | Sun (D-4) | Starr | 1 | 1.98K | 128K | Nov 2010 – Dec 2023 |
| Montalvo, N.R. O-4-12642 | Reh Energy, Inc. only | Sun (H-5) | Starr | 1 | 1.98K | 5.75K | Dec 1996 – Mar 1997 |
| I.V. Montalvo 'C' G-4-282018 | Killam Oil Co., Ltd. only | Sun, North (6340) | Starr | 1 | 1.95K | 151K | Feb 2017 – Aug 2017 |
| Garza-Montalvo Gas Unit G-4-14459 | Killam Oil Co., Ltd. only | Sun, North (Garza) | Starr | 1 | 1.69K | 181K | Jan 1993 – Aug 2015 |
| I.V. Montalvo 'C' O-4-14055 | Killam Oil Co., Ltd. only | Sun (6210 Vicksburg) | Starr | 1 | 1.65K | 11.3K | Jun 2017 – Jul 2017 |
| I.V. Montalvo 'A' G-4-298005 | Killam Oil Co., Ltd. only | Sun,north (5470) | Starr | 1 | 1.54K | 105K | Jun 2024 – Oct 2025 |
| Montalvo G-4-217424 | OXY USA Inc. only | Sun (L Vicksburg) | Starr | 1 | 1.33K | 47.4K | Feb 2006 – Jan 2015 |
| I.V. Montalvo 'C' G-4-282429 | Killam Oil Co., Ltd. only | Sun, North (6340) | Starr | 1 | 1.33K | 238K | Jul 2017 – Aug 2018 |
| I.V. Montalvo 'C' G-4-290360 | Killam Oil Co., Ltd. only | Sun,north (5470) | Starr | 1 | 949 | 268K | Nov 2020 – Oct 2022 |
| Montalvo, N. R. O-4-14253 | Triad O&G, LLC only | Sun (H-5) | Starr | 1 | 877 | 122 | Nov 2024 – Jan 2025 |
| Montalvo Heirs 'B' O-4-13927 | Killam Oil Co., Ltd. only | Sun, North (F-2-1) | Starr | 1 | 817 | 17.3K | Jul 2014 – Jan 2015 |
| Montalvo Heirs 'B' G-4-273446 | Killam Oil Co., Ltd. only | Sun, North (F-2-1) | Starr | 1 | 497 | 121K | Mar 2014 – Jun 2014 |
| Montalvo, I.V. -C- G-4-130645 | Killam Oil Co., Ltd. only | Sun, North (D-1 Res. 2) | Starr | 1 | 475 | 239K | Jan 1993 – Jul 2009 |
| Montalvo Heirs 'B' O-4-13929 | Killam Oil Co., Ltd. only | Sun, North (F-3 Frio) | Starr | 1 | 356 | 1.91K | Jan 2015 – Dec 2017 |
| Montalvo,i.v., -C- G-4-40458 | Oryx Energy Company only | Sun, North (D-1 Res. 2) | Starr | 1 | 355 | 174K | Jan 1993 – Mar 1998 |
| Montalvo, N. R. G-4-209120 | Kerr-McGee Oil & Gas Onshore LP only | Sun, North (6830) | Starr | 1 | 312 | 70.9K | Mar 2005 – Jul 2005 |