| Forestar Byerley a-32 Unit G-3-266667 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Newton | 1 | 665K | 6.08M | Nov 2011 – Apr 2026 |
| Forestar Byerley a-32 Unit 2 G-3-267534 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Newton | 1 | 447K | 5.22M | Apr 2012 – Apr 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 | 290K | 4.52M | Oct 2009 – Apr 2026 |
| Forestar Keaghey a-253 Unit G-3-261210 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Newton | 1 | 275K | 3.65M | Jan 2011 – Apr 2026 |
| Donner-Brown Unit A-83 G-6-185306 | Arcadia Energy Resources, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 242K | 2.89M | Aug 2001 – Apr 2026 |
| 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 |
| 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 |
| 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 |
| 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 | 167K | 3.36M | Nov 2012 – Apr 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 |
| 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 – Mar 2026 |
| 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 |
| 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 | 2.71M | Apr 1995 – Mar 2026 |
| 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 |
| 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 |
| Hamill Unit A-118 G-6-155391 | Arcadia Energy Resources, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 144K | 2M | Jul 1995 – Apr 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 |
| 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 |
| 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 |
| Nicholas G-3-256722 | Hilcorp Energy Company only | Hartburg, S.E. (Yegua Cons.) | Newton | 1 | 132K | 4.34M | Feb 2010 – May 2012 |
| BP Black Stone a-253 West Unit G-3-264937 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Newton | 1 | 128K | 1.66M | Jan 2012 – Apr 2026 |
| Texas A&m University G-3-248058 | Union Gas Operating Company only | Bleakwood, South (Middle Wilcox) | Newton | 1 | 127K | 3.13M | Dec 2008 – Jun 2023 |
| New Lum / Black Stone G-3-280165 | Square Mile Energy, L.L.C. only | Long Prairie (12300) | Newton | 1 | 118K | 3.53M | Oct 2015 – Apr 2026 |
| Champion Int'l. Unit A-1159 G-6-148572 | Sonat Exploration Company -Tyler only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 113K | 717K | Oct 1993 – Feb 1995 |
| Gsu Unit A-543 G-6-151952 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 113K | 1.32M | Jun 1994 – Feb 1999 |
| Gsu Unit A-905 G-6-152421 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 110K | 648K | Apr 1994 – Feb 1999 |
| Fortensky, L. A-1104 G-6-179974 | Arcadia Energy Resources, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 108K | 1.72M | Sep 2000 – Apr 2026 |
| Champion Int'l. Unit a-19 No. 2 G-6-154160 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 106K | 752K | Mar 1995 – Feb 1999 |
| Arco Fee Unit G-6-147217 | Bonfire Operating LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 105K | 1.61M | Oct 1993 – Jan 2002 |
| Donner "a" Unit G-6-148972 | Prize Exploration & Prod, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 102K | 3.73M | Dec 1993 – Jan 2003 |
| Jones Unit A-423 G-6-159935 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 102K | 817K | Jul 1996 – Jan 2001 |
| BP Black Stone a-472 Unit G-3-266630 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Newton | 1 | 99.3K | 1.91M | Jul 2010 – Apr 2026 |
| Blackstone Minerals Unit A-890 G-6-159391 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 97.7K | 649K | May 1996 – Feb 1999 |
| Donner-Brown Unit A-621 G-6-151955 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 96.1K | 884K | Aug 1994 – Feb 1999 |
| BP America a-626 West Unit G-3-265488 | Zarvona Energy LLC only | Magnolia Springs (Austin Chalk) | Newton | 1 | 93.1K | 643K | Apr 2011 – Apr 2026 |
| Donner-Brown Unit A-660 G-6-155801 | Rockstar Production, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 91.6K | 1.64M | Jul 1995 – Apr 2026 |
| Jones Unit A-93 G-6-159902 | Swift Energy Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 89.2K | 560K | May 1996 – Sep 1998 |
| Gibbs Bros. Unit G-6-149857 | Union Pacific Resources Company only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 88.2K | 472K | May 1994 – Jan 1999 |
| Champion Int'l A-334 G-6-217427 | Rockstar Production, LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 86.6K | 828K | Jun 2005 – Apr 2026 |
| Hall Unit G-6-149041 | Bonfire Operating LLC only | Brookeland (Austin Chalk, 8800) | Newton | 1 | 82K | 891K | Feb 1994 – Jan 2018 |