| Johnson, Lou E., Estate, a/C 1 O-9-662 | Quail Ridge Petroleum LLC only | Jameson (Strawn) | Sterling | 46 | 437K | 5M | by Jan 1993 – Aug 2026 |
| Johnson, Lou E. Estate a/C 2 O-9-7940 | Quail Ridge Petroleum LLC only | Jameson (Strawn) | Sterling | 16 | 142K | 2.33M | by Jan 1993 – Aug 2026 |
| Johnson, Lou E. Estate a/C 4 O-9-10998 | Quail Ridge Petroleum LLC only | Jameson (Strawn) | Sterling | 3 | 59K | 650K | by Jan 1993 – Aug 2026 |
| Johnson, Lou E. Estate O-10-38372 | Quail Ridge Petroleum LLC only | Jameson, North (Strawn) | Sterling | 6 | 56.9K | 626K | Jun 2007 – Aug 2026 |
| Glass, J. L. Estate "B" O-10-34983 | Black River Operating LLC only | Herrell | Sterling | 1 | 55.8K | 0 | Jun 1996 – Jun 2026 |
| Flint Estate O-10-24824 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 17 | 50.8K | 1.97M | by Jan 1993 – Dec 2014 |
| Flint Estate -B- O-10-35209 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 10 | 22.3K | 2.06M | Feb 1997 – Nov 2014 |
| Flint Estate -A- O-10-27017 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 8 | 14.7K | 1.38M | by Jan 1993 – Dec 2014 |
| Bade, Sara, Estate O-10-25205 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 3 | 11.8K | 517K | by Jan 1993 – Feb 2013 |
| Collins, Claude Jr. Estate O-10-31354 | Ladd Oil & Gas Corporation only | China Draw (Ellenburger) | Sterling | 1 | 4.92K | 14 | Apr 1995 – Jan 2005 |
| Collins, Claude Jr. Estate -B- O-10-32214 | Ladd Oil & Gas Corporation only | China Draw (Canyon) | Sterling | 1 | 4.63K | 40 | May 1995 – Oct 2006 |
| Mahaffey Estate -A- O-10-25491 | EQT Production Texas, LLC only | Deck (Cisco) | Sterling | 1 | 3.66K | 12.5K | by Jan 1993 – Mar 2014 |
| Flint Estate G-10-231144 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 3.63K | 191K | Mar 2007 – Aug 2026 |
| Flint Estate -C- O-10-35210 | Blackmun Family Partners, L.P. only | Conger (Penn) | Sterling | 2 | 3.41K | 192K | Feb 1997 – Nov 2006 |
| Mahaffey Estate G-10-217634 | Burk Royalty Co., Ltd. only | Deck (Cisco) | Sterling | 1 | 2.58K | 194K | Jun 2006 – Aug 2026 |
| Flint Estate -B- G-10-231149 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 2.18K | 166K | Mar 2007 – Aug 2026 |
| Mahaffey Estate O-10-25129 | Range Production Company only | Deck (Cisco) | Sterling | 1 | 2.16K | 142K | by Jan 1993 – Jun 2006 |
| Flint Estate -B- G-10-231148 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 1.12K | 223K | Mar 2007 – Aug 2026 |
| Flint Estate -C- G-10-223441 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 1.07K | 83.9K | Nov 2006 – Aug 2026 |
| Reed, J.C. Estate O-10-28485 | Zachry Oil and Gas Properties only | Sterling, N. (Canyon Sd.) | Sterling | 1 | 997 | 21 | by Jan 1993 – Sep 1994 |
| Flint Estate -A- G-10-231152 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 686 | 67.1K | Mar 2007 – Aug 2026 |
| Flint Estate "A" G-10-147004 | Steller Energy & Investment Corp only | Conger (Penn) | Sterling | 1 | 673 | 70.8K | Aug 1993 – Dec 1998 |
| Flint Estate -C- G-10-223442 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 572 | 95.4K | Nov 2006 – Aug 2026 |
| Flint Estate "A" G-10-147006 | Steller Energy & Investment Corp only | Conger (Penn) | Sterling | 1 | 517 | 75.1K | Sep 1993 – Dec 1998 |
| Flint Estate G-10-147010 | Steller Energy & Investment Corp only | Conger (Penn) | Sterling | 1 | 503 | 89.9K | Sep 1993 – Nov 1996 |
| Reed Estate 13 G-10-130800 | Stanolind Production LLC only | Sterling, N. (Canyon Sd.) | Sterling | 1 | 480 | 126K | by Jan 1993 – Jan 2011 |
| Flint Estate G-10-147017 | Steller Energy & Investment Corp only | Conger (Penn) | Sterling | 1 | 426 | 81.7K | Aug 1993 – Nov 1996 |
| Flint Estate -B- G-10-276507 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 377 | 50.9K | Jun 2013 – Aug 2026 |
| Flint Estate G-10-231145 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 368 | 66.6K | Mar 2007 – Aug 2018 |
| Flint Estate G-10-231146 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 337 | 99.7K | Mar 2007 – Sep 2018 |
| Flint Estate -A- G-10-231151 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 238 | 96.3K | Mar 2007 – Aug 2026 |
| Johnson, Lou E., Estate, a/C 1 O-10-45725 | Quail Ridge Petroleum LLC only | Garden City, S. (Wolfcamp) | Sterling | 1 | 192 | 10.4K | Oct 2014 – Aug 2026 |
| Reed, J. C. Estate -D- O-10-28812 | Sahara Operating Company only | Sterling, N. (Canyon Sd.) | Sterling | 1 | 186 | 8.97K | by Jan 1993 – Sep 2002 |
| Flint Estate G-10-279566 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 175 | 58.6K | Jan 2015 – Aug 2026 |
| Flint Estate G-10-279567 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 172 | 58.5K | Jan 2015 – Aug 2026 |
| Reed Estate '13' G-10-178572 | Bright & Co. only | Sterling, N. (Canyon Sd.) | Sterling | 1 | 128 | 72K | Jul 2000 – Aug 2010 |
| Reed, J. C. Estate "A" G-10-124467 | Sahara Operating Company only | Sterling, N. (Canyon Sd.) | Sterling | 1 | 90 | 112K | by Jan 1993 – Jan 2011 |
| Flint Estate G-10-216938 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 72 | 77.9K | Jun 2006 – Aug 2011 |
| Flint Estate -B- G-10-276500 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 71 | 39K | Jun 2013 – Aug 2026 |
| Flint Estate -B- G-10-276508 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 70 | 38.4K | Jun 2013 – Aug 2026 |
| Flint Estate -B- G-10-276506 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 70 | 38.4K | Jun 2013 – Aug 2026 |
| Flint Estate -B- G-10-272972 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 70 | 37.8K | Jun 2013 – Aug 2026 |
| Flint Estate -B- G-10-279634 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 69 | 9.13K | Feb 2015 – Aug 2026 |
| Flint Estate -B- G-10-276501 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 69 | 27.1K | Jun 2013 – Aug 2026 |
| Flint Estate -A- G-10-268192 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 47 | 26.5K | Aug 2012 – Aug 2026 |
| Flint Estate -A- G-10-279755 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 47 | 12.9K | Jan 2015 – Aug 2026 |
| Flint Estate -A- G-10-279750 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 47 | 14.9K | Jan 2015 – Aug 2026 |
| Flint Estate -A- G-10-268199 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 47 | 30K | May 2012 – Aug 2026 |
| Flint Estate -A- G-10-279769 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 46 | 14.9K | Jan 2015 – Aug 2026 |
| Flint Estate -B- G-10-276509 | Trek Resources, Inc. only | Conger (Penn) | Sterling | 1 | 6 | 41.1K | Aug 2019 – Aug 2026 |