| Forestar Byerley a-32 Unit G-3-266667 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Newton | 1 | 669K | 6.13M | Nov 2011 – Aug 2026 |
| Texaco Fee Brookland O-6-13040 | Bonfire Operating LLC only | Brookeland (Austin Chalk, 8800) | Newton | 5 | 493K | 5.1M | by Jan 1993 – Dec 2006 |
| Forestar Byerley a-32 Unit 2 G-3-267534 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Newton | 1 | 452K | 5.3M | Apr 2012 – Aug 2026 |
| Brown-Donner Unit A-567 G-6-153267 | Union Pacific Resources Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 370K | 2.15M | Dec 1994 – Aug 1998 |
| Forestar Black Stone a-90 Unit G-3-255669 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Newton | 1 | 291K | 4.53M | Oct 2009 – Aug 2026 |
| Forestar Keaghey a-253 Unit G-3-261210 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Newton | 1 | 276K | 3.66M | Jan 2011 – Aug 2026 |
| Champion Unit 1 O-6-13243 | Prize Exploration & Prod, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 274K | 1.34M | Sep 1993 – May 2006 |
| Brown-Donner a-1166 Unit O-6-13316 | Arcadia Energy Resources, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 2 | 272K | 2.11M | Apr 1994 – Aug 2026 |
| Donner-Brown Unit A-83 G-6-185306 | Arcadia Energy Resources, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 242K | 2.9M | Aug 2001 – Aug 2026 |
| Artemis G-3-300246 | Theron Energy Operating, LLC only | Magnolia Springs (Austin Chalk) | Newton | 1 | 238K | 1.04M | Aug 2025 – Aug 2026 |
| Arco-Maersk O-6-12753 | Mineral Technologies, Inc. only | Brookeland (Austin Chalk, 8800) | Sabine | 7 | 231K | 1.8M | by Jan 1993 – Aug 2003 |
| Donner-Brown Unit A-1167 G-6-153736 | Bonfire Operating LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 224K | 1.99M | Feb 1995 – Sep 2018 |
| Smith Unit A-531 O-6-14085 | Arcadia Energy Resources, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 196K | 1.6M | Apr 2001 – Jul 2026 |
| Donner-Brown "a" A-459 G-6-151947 | Texas Oil and Gas Operating, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 196K | 1.99M | Jun 1994 – Jun 2010 |
| Jones Unit a - 981 G-6-158193 | Texas Oil and Gas Operating, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 193K | 1.64M | Feb 1996 – Oct 2012 |
| Champion Int'l. Unit A-1148 G-6-151946 | Sonat Exploration Company -Tyler only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 193K | 944K | Mar 1994 – Feb 1995 |
| Gibbs Bros. Unit O-6-13923 | Arcadia Energy Resources, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 2 | 185K | 1.12M | Feb 1999 – Aug 2026 |
| Donner-Brown Unit A-1161 G-6-151950 | Bonfire Operating LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 184K | 2.82M | Apr 1994 – Dec 2019 |
| Texaco Fee Unit 3 O-6-13152 | HK Energy Operating, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 182K | 4.18M | by Jan 1993 – Nov 2013 |
| Donner-Brown Unit A-1176 G-6-159898 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 168K | 1.09M | Apr 1996 – Feb 1999 |
| BP Black Stone a-90 Unit G-3-269440 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Newton | 1 | 168K | 3.37M | Nov 2012 – Aug 2026 |
| Champion Int'l Unit A-19 G-6-152441 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 167K | 1.07M | Sep 1994 – Feb 1999 |
| Champion Int'l Unit A-1141 G-6-150093 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 167K | 895K | Mar 1994 – Feb 1999 |
| Champion Int'l. Unit A-565 O-6-14101 | Rockstar Production, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 165K | 1.2M | May 2001 – Aug 2026 |
| Temple A-420 G-6-157254 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 163K | 1.63M | Oct 1995 – Apr 2001 |
| Arco Fee Unit A-228 G-6-153489 | Enervest Operating, L.L.C. only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 163K | 2.16M | May 1994 – Nov 2001 |
| Donner Unit G-6-147163 | Atlas Operating LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 163K | 4.92M | May 1993 – Apr 2026 |
| Champion O-6-13287 | Berenergy Corporation only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 162K | 1.91M | Jan 1994 – Aug 1995 |
| Champion Int'l. Unit a-20 NO.2 G-6-148677 | Sonat Exploration Company -Tyler only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 161K | 784K | Dec 1993 – May 1994 |
| Champion Int'l Unit A-1175 G-6-155820 | Union Pacific Resources Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 159K | 833K | Jul 1995 – Jan 1999 |
| Arco Fee O-6-13251 | Rme Petroleum Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 158K | 910K | Aug 1993 – Jun 2000 |
| Champion Int'l. Unit A-1148 O-6-13406 | Atlas Operating LLC only | Brookeland (Austin Chalk, 8800) | Newton | 2 | 158K | 1.06M | Mar 1995 – Jun 2026 |
| Champion Int'l. Unit A-796 O-6-14109 | Arcadia Energy Resources, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 156K | 1.15M | Jul 2001 – Aug 2026 |
| Donner-Brown 567 O-6-14006 | Arcadia Energy Resources, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 154K | 1.44M | Apr 2000 – Aug 2026 |
| Barrow Unit A-928 O-6-14280 | Arcadia Energy Resources, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 154K | 1.21M | Dec 2003 – Aug 2026 |
| Champion Int'l. Unit A-1164 G-6-151948 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 149K | 967K | Jun 1994 – Feb 1999 |
| Donner-Brown Unit A-148 G-6-156716 | Atlas Operating LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 149K | 2.72M | Apr 1995 – Jun 2026 |
| Texaco Fee Ami O-6-13074 | Anadarko E&P Company LP only | Brookeland (Austin Chalk, 8800) | Newton | 3 | 148K | 1.85M | Mar 1993 – Sep 2000 |
| Champion Int'l. Unit A-460 G-6-151953 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 148K | 908K | Aug 1994 – Feb 1999 |
| Texaco Ami Unit 1 O-6-13113 | Lodel Energy Resources Corporati only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 147K | 1.08M | by Jan 1993 – Mar 2025 |
| Champion Int'l Unit A-411 G-6-159533 | Texas Oil and Gas Operating, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 146K | 1.45M | May 1996 – Sep 2000 |
| Champion Unit 1 O-6-13315 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 144K | 484K | Nov 1993 – May 2004 |
| Hamill Unit A-118 G-6-155391 | Arcadia Energy Resources, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 144K | 2M | Jul 1995 – Aug 2026 |
| Champion a-334 Unit G-6-152455 | Union Pacific Resources Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 143K | 1.21M | Jul 1994 – Dec 1998 |
| Donner-Brown Unit A-11 G-6-156394 | Swift Energy Operating, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 141K | 1.91M | Jul 1995 – May 2006 |
| Temple-Inland Unit A-923 O-6-14056 | Arcadia Energy Resources, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 139K | 1.91M | Dec 2000 – Jul 2026 |
| Champion Int'l Unit a-2O No. 2 O-6-13345 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 2 | 139K | 1.04M | Jun 1994 – Jun 1997 |
| Jones, C.S. Unit A-93 G-6-159092 | Prize Exploration & Prod, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 136K | 1.15M | Mar 1996 – Sep 1999 |
| Brown-Donner Unit A-567 O-6-13853 | Rockstar Production, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 136K | 994K | Jan 1998 – Aug 2026 |
| Champion Int'l Unit A-1138 G-6-150308 | Sonat Exploration Company -Tyler only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 135K | 528K | May 1994 – Feb 1995 |