| Texaco Fee- Guerra "A" O-4-12810 | Southern Tejas Asset Group LLC only | Roma | Starr | 1 | 194K | 333K | Sep 1998 – Jul 2026 |
| Texaco Fee-Guerra "C" #1 O-4-12681 | Legend Natural Gas III, LP only | Roma | Starr | 3 | 74.3K | 28K | Jun 1997 – Dec 2001 |
| Texaco Fee-Guerra "E" #1 O-4-12754 | Trinity River Energy Oper, LLC only | Roma | Starr | 1 | 55.8K | 116K | Jan 1998 – Dec 2012 |
| Fina Conoco Fee G-4-159772 | Fina Oil & Chemical Company only | Frost (Frio 14) | Starr | 1 | 27.6K | 53.4K | Oct 1995 – Jul 1997 |
| Fina Conoco Fee G-4-154156 | Fina Oil & Chemical Company only | Frost, North (Orive) | Starr | 1 | 25.2K | 472K | Dec 1994 – May 1998 |
| Fina Conoco Fee O-4-12722 | Merit Energy Company only | Dee Davenport (3700) | Starr | 1 | 21.3K | 331K | Sep 1996 – Oct 1998 |
| Fina-Conoco Fee G-4-172829 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 14.3K | 561K | Jun 1998 – Jun 2006 |
| Fina-Conoco Fee G-4-154813 | Fina Oil & Chemical Company only | Frost (Vicksburg 7300) | Starr | 1 | 12.9K | 228K | Dec 1994 – Sep 1997 |
| Texaco Fee - Guerra "D" #1 O-4-12760 | Petrovybe Opco LLC only | Roma | Starr | 2 | 10.7K | 38.6K | Oct 1997 – Dec 2000 |
| Fina-Conoco Fee G-4-142605 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 10.3K | 804K | by Jan 1993 – May 1998 |
| Fina-Conoco Fee G-4-154171 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 10.1K | 781K | Mar 1995 – Jul 2006 |
| Fina-Conoco Fee G-4-141857 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 8.75K | 551K | by Jan 1993 – Aug 1994 |
| Fina Conoco Fee G-4-131896 | Fina Oil & Chemical Company only | Frost, North (Ashby) | Starr | 1 | 8.72K | 368K | by Jan 1993 – Aug 1996 |
| Fina Conoco Fee G-4-135624 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 8.6K | 215K | by Jan 1993 – Jan 2006 |
| Fina-Conoco Fee O-4-12963 | Merit Energy Company only | Dee Davenport (3700) | Starr | 1 | 7.66K | 8.27K | Jun 2000 – Jul 2001 |
| Fina-Conoco Fee G-4-133179 | Fina Oil & Chemical Company only | Frost, West (VX-Wood) | Starr | 1 | 7.45K | 648K | by Jan 1993 – May 1998 |
| Fina-Conoco Fee G-4-162540 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 6.76K | 514K | Feb 1997 – Sep 2005 |
| Fina Conoco Fee G-4-171650 | Merit Energy Company only | Frost (Frio 14) | Starr | 1 | 6.73K | 165K | Jun 1998 – Apr 2000 |
| Fina Conoco Fee G-4-135059 | Merit Energy Company only | Frost, North (Ashby) | Starr | 1 | 6.31K | 461K | by Jan 1993 – Jun 2006 |
| Fina Conoco Fee G-4-151203 | Fina Oil & Chemical Company only | Frost,north (Rincon) | Starr | 1 | 5.55K | 222K | Aug 1994 – May 1998 |
| Fina-Conoco Fee G-4-138024 | Fina Oil & Chemical Company only | Frost, North (Ashby FB III) | Starr | 1 | 5.5K | 211K | by Jan 1993 – Feb 1994 |
| Fina Conoco Fee G-4-130638 | Fina Oil & Chemical Company only | Frost, West (VX-Wood) | Starr | 1 | 5.42K | 667K | by Jan 1993 – Jan 1997 |
| Texaco Fee O-4-12611 | Trinity River Energy Oper, LLC only | Roma, East (Queen City) | Starr | 1 | 4.8K | 21.7K | Apr 1996 – Mar 2013 |
| Fina-Conoco Fee G-4-138642 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 4.41K | 179K | by Jan 1993 – Jul 2006 |
| Fina-Conoco Fee G-4-154170 | Totalfinaelf E&P USA Inc only | Frost,north (Rincon) | Starr | 1 | 4.27K | 238K | Mar 1995 – Jan 2003 |
| Fina-Conoco Fee G-4-151463 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 3.92K | 421K | Aug 1994 – Aug 2000 |
| Fina-Conoco Fee G-4-173493 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 3.83K | 224K | Jun 1998 – May 2011 |
| Fina Conoco Fee G-4-135060 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 3.76K | 168K | by Jan 1993 – Oct 1998 |
| Fina Conoco Fee G-4-146681 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 3.24K | 187K | Sep 1993 – May 2000 |
| Fina-Conoco Fee G-4-133838 | Fina Oil & Chemical Company only | Frost, West (VX-Wood) | Starr | 1 | 2.95K | 201K | by Jan 1993 – May 1998 |
| Fina Conoco Fee O-4-12702 | Merit Energy Company only | Frost (Frio 14) | Starr | 1 | 2.82K | 1.37K | Jul 1997 – Jan 1998 |
| Fina Conoco Fee G-4-133901 | Total E&P USA, Inc. only | Frost, North (Ashby FB III) | Starr | 1 | 2.62K | 60K | by Jan 1993 – Jan 1994 |
| Fina-Conoco Fee G-4-132886 | Fina Oil & Chemical Company only | Frost, West (VX-Wood) | Starr | 1 | 2.62K | 130K | by Jan 1993 – Feb 1995 |
| Texaco Fee Guerra "G" G-4-176285 | Southern Tejas Asset Group LLC only | Roma | Starr | 1 | 2.58K | 1.59M | Jul 1999 – Jul 2026 |
| Texaco Fee GU O-4-13263 | Trinity River Energy Oper, LLC only | Roma (Crockett) | Starr | 1 | 2.54K | 62K | Apr 2004 – Dec 2012 |
| Fina Conoco Fee G-4-133900 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 2.43K | 259K | by Jan 1993 – Oct 1999 |
| Fina-Conoco Fee G-4-139173 | Totalfinaelf E&P USA Inc only | Frost, North (Vicksburg 7100) | Starr | 1 | 2.39K | 14.8K | by Jan 1993 – Mar 1994 |
| Fina Conoco Fee G-4-140550 | Totalfinaelf E&P USA Inc only | Frost,north (Rincon) | Starr | 1 | 1.4K | 12.1K | by Jan 1993 – Aug 1993 |
| Shell Conoco Fee G-4-246021 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 852 | 211K | Oct 2008 – Aug 2026 |
| Texaco Fee G-4-155731 | Linder Oil Company,a Partnership only | Roma (Queen City A) | Starr | 1 | 726 | 130K | Sep 1995 – Mar 1998 |
| Fee O-4-4944 | Osborn Heirs Company only | Sun, North (Jewel) | Starr | 14 | 638 | 402 | by Jan 1993 – Jan 1993 |
| Fina Conoco Fee G-4-149139 | Fina Oil & Chemical Company only | Frost, North (Wood) | Starr | 1 | 534 | 24.9K | Mar 1994 – Nov 1994 |
| Fina-Conoco Fee G-4-146705 | Merit Energy Company only | Rincon (Vicksburg Cons.) | Starr | 1 | 192 | 6.65K | Feb 1993 – Jan 1994 |
| Fina Conoco Fee G-4-133136 | Fina Oil & Chemical Company only | Frost, North (Ashby FB I) | Starr | 1 | 184 | 367 | by Jan 1993 – Apr 1993 |
| Texaco Fee G-4-159246 | Linder Oil Company,a Partnership only | Roma | Starr | 1 | 98 | 44.5K | Jun 1996 – Apr 1997 |
| Exxon Fee G-4-150088 | EOG Resources, Inc. only | Lopeno, South (Wilcox 10,700) | Starr | 1 | 83 | 653K | Jun 1994 – May 2001 |
| Texaco Fee G-4-143534 | BPL Exploration, Ltd. only | Roma, W. (Queen City 6200) | Starr | 1 | 60 | 37.3K | by Jan 1993 – Sep 1996 |
| Texaco Fee Guerra "F" G-4-177379 | Legend Natural Gas III, LP only | Roma (Crockett) | Starr | 1 | 54 | 118K | Apr 2000 – Aug 2006 |
| Texaco Fee O-4-12770 | Legend Natural Gas III, LP only | Roma | Starr | 1 | 0 | 0 | — |
| Owen & Moss Fee G-4-35289 | Wright Brothers Energy, Inc. only | Ricaby, South (1400) | Starr | 1 | 0 | 908 | Feb 1993 – May 2002 |