| Edinburg Unit G-4-153314 | Royal Production Company, Inc. | Edinburg (Lower Marks A) | Hidalgo | 1 | 259K | 6.63M | Nov 1994 – Sep 1999 |
| Edinburg Unit G-4-168718 | Royal Production Company, Inc. | Edinburg, S. (Marks 11030) | Hidalgo | 1 | 194K | 7.22M | Jan 1998 – Mar 2011 |
| London G-4-62307 | Royal Production Company, Inc. | Portland, N. (Commonwealth Serie | San Patricio | 1 | 163K | 4.63M | Jan 1993 – May 2008 |
| Cable-Garrett G-4-193950 | Royal Production Company, Inc. | Portland, N. (Commonwealth Serie | San Patricio | 1 | 127K | 2.1M | Mar 2003 – Jan 2019 |
| Edinburg Unit G-4-197653 | Royal Production Company, Inc. | Edinburg, S. (Marks 11030) | Hidalgo | 1 | 115K | 9.6M | Sep 2003 – Sep 2020 |
| Cable Gas Unit G-4-205684 | Royal Production Company, Inc. | Portland, N. (Commonwealth Serie | San Patricio | 1 | 108K | 1.45M | Aug 2004 – Aug 2007 |
| Edinburg Unit G-4-175355 | Royal Production Company, Inc. | Edinburg (Upper Marks "C") | Hidalgo | 1 | 95K | 12.1M | Sep 1999 – Dec 2019 |
| Foster Minerals D G-3-151795 | Royal Production Company, Inc. | Mercy (10950 Wilcox) | San Jacinto | 1 | 90.8K | 1.47M | Oct 1994 – Apr 1998 |
| Cartwright Ranch G-2-269254 | Royal Production Company, Inc. | Mount Lucas (5200) | Live Oak | 1 | 84K | 253K | Jan 2013 – Feb 2019 |
| Edinburg Unit G-4-199312 | Royal Production Company, Inc. | Edinburg, S. (Marks 11030) | Hidalgo | 1 | 61.7K | 8.05M | Nov 2003 – Jul 2014 |
| Edinburg Unit G-4-209339 | Royal Production Company, Inc. | Edinburg ( 9,000) | Hidalgo | 1 | 60.7K | 10.5M | Feb 2005 – May 2008 |
| Slick Estate G-4-294819 | Royal Production Company, Inc. | Rincon, N. (Vicksburg Cons.) | Starr | 1 | 41.8K | 1.47M | Feb 2023 – Apr 2026 |
| Wilson Unit G-4-177676 | Royal Production Company, Inc. | Corpus Christi,west (12500) | Nueces | 1 | 34.7K | 618K | May 2000 – Jan 2001 |
| State Tract 15 G-4-201321 | Royal Production Company, Inc. | Corpus Channel, NW (Frio G-1) | Nueces | 1 | 31.2K | 427K | Apr 2004 – Jul 2011 |
| Edinburg Unit G-4-215992 | Royal Production Company, Inc. | Edinburg (10,760) | Hidalgo | 1 | 24.2K | 844K | Apr 2005 – Nov 2024 |
| Edinburg Unit G-4-261258 | Royal Production Company, Inc. | Edinburg (10,800 Frio) | Hidalgo | 1 | 22K | 3.02M | Mar 2011 – Apr 2026 |
| Lucas, R. G-2-261924 | Royal Production Company, Inc. | Hinnant (5500) | Live Oak | 1 | 21.1K | 423K | Mar 2011 – Dec 2019 |
| Edinburg Unit G-4-295698 | Royal Production Company, Inc. | Edinburg, S. (Marks 11030) | Hidalgo | 1 | 19.8K | 801K | Jul 2023 – Apr 2025 |
| Lucas G-2-261463 | Royal Production Company, Inc. | Hinnant (Wilson) | Live Oak | 1 | 18.9K | 789K | Mar 2011 – Oct 2013 |
| Cartwright Ranch G-2-287919 | Royal Production Company, Inc. | Mount Lucas (Cook Mtn. 5800) | Live Oak | 1 | 18.5K | 754K | Jul 2019 – Oct 2021 |
| Cartwright Ranch G-2-288776 | Royal Production Company, Inc. | Mount Lucas (Cook Mtn. 5800) | Live Oak | 1 | 18.4K | 905K | Dec 2019 – Sep 2022 |
| Hinnant Heirs 'A' G-2-272692 | Royal Production Company, Inc. | Lagarto Creek (Yegua) | Live Oak | 1 | 18.1K | 784K | Jan 2014 – Jun 2019 |
| Cartwright Ranch G-2-260575 | Royal Production Company, Inc. | Mount Lucas (Cook Mtn. 5700) | Live Oak | 1 | 15.9K | 1.23M | Jan 2011 – Sep 2018 |
| State Tract 15 G-4-153853 | Royal Production Company, Inc. | Corpus Channel, NW. (M-1) | Nueces | 1 | 15.2K | 123K | Mar 1995 – Oct 1995 |
| Cartwright Ranch G-2-258696 | Royal Production Company, Inc. | Lagarto (Pettus) | Live Oak | 1 | 14.9K | 726K | Nov 2010 – Mar 2015 |
| Edinburg Unit G-4-186952 | Royal Production Company, Inc. | Edinburg (Upper Marks "C") | Hidalgo | 1 | 14.4K | 1.77M | Apr 2001 – Feb 2011 |
| Cartwright Ranch G-2-286955 | Royal Production Company, Inc. | Mount Lucas (Cook Mtn. 5800) | Live Oak | 1 | 13.7K | 444K | Feb 2019 – Feb 2021 |
| Edinburg Unit G-4-289037 | Royal Production Company, Inc. | Edinburg ( 9,000) | Hidalgo | 1 | 13.3K | 2.37M | Jan 2020 – Sep 2023 |
| Casso et al Gas Unit G-4-157743 | Royal Production Company, Inc. | Edinburg, S. (Marks 11030) | Hidalgo | 1 | 13.1K | 1.2M | Feb 1996 – Jul 2009 |
| Mary A. Hinnant Heirs 'A' G-2-279049 | Royal Production Company, Inc. | Lagarto Creek (Yegua) | Live Oak | 1 | 12.5K | 895K | Feb 2015 – May 2020 |
| Guaranty Title & Trust G-4-129953 | Royal Production Company, Inc. | Saxet (9150) | Nueces | 1 | 11.3K | 580K | Jan 1993 – Jan 1998 |
| Cartwright Ranch G-2-264537 | Royal Production Company, Inc. | Mount Lucas (5500) | Live Oak | 1 | 9.36K | 431K | Sep 2011 – Dec 2019 |
| Boykin G-4-70601 | Royal Production Company, Inc. | Portland, N. (Commonwealth Serie | San Patricio | 1 | 8.64K | 256K | Jan 1993 – May 1999 |
| Hinnant Heirs "A" G-2-264538 | Royal Production Company, Inc. | Hinnant (Wilson) | Live Oak | 1 | 8.32K | 544K | Sep 2011 – Jan 2015 |
| Casso Gas Unit G-4-210293 | Royal Production Company, Inc. | Edinburg, S. (Marks 11030) | Hidalgo | 1 | 8.11K | 609K | Feb 2005 – Aug 2006 |
| Edinburg Unit G-4-10200 | Royal Production Company, Inc. | Edinburg (10,800 Frio) | Hidalgo | 1 | 8K | 3.9M | Jan 1993 – Dec 2000 |
| Edinburg Unit G-4-299586 | Royal Production Company, Inc. | Edinburg (8800) | Hidalgo | 1 | 7.86K | 1.09M | May 2025 – Apr 2026 |
| Beall G-2-260565 | Royal Production Company, Inc. | Lagarto Creek (Yegua) | Live Oak | 1 | 7.78K | 371K | Jan 2011 – Jan 2013 |
| Cartwright Ranch G-2-290256 | Royal Production Company, Inc. | Mount Lucas (Cook Mtn. 5800) | Live Oak | 1 | 7.72K | 467K | Oct 2020 – Apr 2022 |
| Cartwright Ranch G-2-288759 | Royal Production Company, Inc. | Mount Lucas (Cook Mtn. 5700) | Live Oak | 1 | 7.65K | 673K | Dec 2019 – Mar 2026 |
| Cartwright Ranch G-2-274358 | Royal Production Company, Inc. | Mount Lucas (Cook Mtn. 5700) | Live Oak | 1 | 6.91K | 763K | Jun 2014 – Jun 2021 |
| Beall G-2-272483 | Royal Production Company, Inc. | Lagarto Creek (Yegua) | Live Oak | 1 | 6.85K | 277K | Aug 2013 – May 2020 |
| Edinburg Unit G-4-277201 | Royal Production Company, Inc. | Edinburg (10,760) | Hidalgo | 1 | 6.76K | 526K | Nov 2014 – Aug 2018 |
| Edinburg Unit G-4-132944 | Royal Production Company, Inc. | Edinburg (10,800 FB-B Frio) | Hidalgo | 1 | 6.08K | 2.32M | Jan 1993 – Apr 2026 |
| State Tract 9 G-4-120380 | Royal Production Company, Inc. | Corpus Channel, NW (10,100) | Nueces | 1 | 5.95K | 56.3K | Jan 1993 – Oct 1994 |
| State Tract 9 G-4-109004 | Royal Production Company, Inc. | Corpus Channel, NW. (M-3-B) | Nueces | 1 | 5.83K | 62.3K | Jan 1993 – Jun 1995 |
| Lucas, R. G-2-264393 | Royal Production Company, Inc. | Hinnant (5500) | Live Oak | 1 | 5.75K | 57.1K | Oct 2011 – Apr 2015 |
| Chapman, J.O. G-4-149677 | Royal Production Company, Inc. | Chapman Ranch (7130) | Nueces | 1 | 5.13K | 63.8K | Apr 1994 – Nov 1994 |
| Cartwright Ranch G-2-276735 | Royal Production Company, Inc. | Mount Lucas (Cook Mtn. 5700) | Live Oak | 1 | 5.08K | 244K | Nov 2014 – Mar 2017 |
| Beall G-2-269253 | Royal Production Company, Inc. | Lagarto (Yegua 6050) | Live Oak | 1 | 4.99K | 113K | Jan 2013 – Aug 2013 |