| Griffin Ranch OU B O-6-14002 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 2 | 79.9K | 144K | Feb 2000 – Jan 2008 |
| Ginn Heirs #1 O-6-13878 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 55.5K | 203K | Feb 1999 – Jan 2008 |
| Griffin Ranch OU A O-6-14166 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 2 | 38.7K | 183K | May 2002 – Jan 2008 |
| Lynn Horton Oil Unit #1 O-6-14052 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 34.9K | 341K | Nov 2000 – Jan 2008 |
| Family Land Heritage Trust O-6-13704 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 2 | 33.5K | 451K | Aug 1997 – Jan 2008 |
| Bell Oil Unit #1 O-6-13879 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 33.2K | 72.6K | Feb 1999 – Jan 2008 |
| Starr Dickson O.U. 1 O-6-13975 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 2 | 26.8K | 590K | Aug 1999 – Jan 2008 |
| Akin-Ross G.U. 1 G-6-160340 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 25.3K | 438K | Oct 1996 – Jul 1999 |
| Wilson Dickson O.U. 1 O-6-14023 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 2 | 22.2K | 416K | Aug 1999 – Jan 2008 |
| Ginn Heirs GU #1 G-6-146001 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 20.3K | 297K | Jul 1993 – Jan 1999 |
| Horton, Richard Kyle O.U. NO.1 O-6-13972 | Burlington Resources O & G Co LP only | Danville (Travis Peak Cons.) | Gregg | 1 | 20.1K | 174K | Aug 1999 – Jan 2008 |
| Bell GU #1 G-6-146182 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 19.5K | 363K | Jul 1993 – Jan 1999 |
| Akin-Ross G.U. 1 G-6-152358 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 18.6K | 682K | Nov 1994 – Feb 2000 |
| Murphy OU #1 O-6-14048 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 18K | 364K | Nov 2000 – Jan 2008 |
| Cunyus, G.B. O-6-14326 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 16.4K | 235K | Jun 2004 – Jan 2008 |
| Dickson, Starr GU #1 G-6-154524 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 12.4K | 391K | May 1995 – Dec 2004 |
| Patton-Jarvis O-6-14518 | Machin & Associates, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 12K | 35.5K | May 2006 – Nov 2006 |
| Horton O-6-13973 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 11.5K | 167K | Nov 1999 – Jan 2008 |
| Barton, Martha Gas Unit O-6-13720 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 9.91K | 275K | Sep 1997 – Jan 2008 |
| Horton, Joe Clyde O.U. NO.1 O-6-14022 | Burlington Resources O & G Co LP only | Danville (Travis Peak Cons.) | Gregg | 1 | 8.71K | 107K | Mar 2000 – Sep 2006 |
| Griffin Ranch G. U. 3 O-6-14387 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 8.61K | 83.2K | Oct 2004 – Jan 2008 |
| Flanagan, M.T. "C" et al G/U G-6-107813 | Apache Corporation only | Danville (Travis Peak Cons.) | Gregg | 1 | 6.09K | 274K | Jan 1993 – Aug 1999 |
| Flanagan, M.T. "C" et al G/U G-6-149468 | Apache Corporation only | Danville (Travis Peak Cons.) | Gregg | 1 | 5.3K | 140K | Mar 1994 – Jul 1997 |
| Griffin Ranch "C" Oil Unit O-6-14522 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 2 | 5.1K | 142K | Jul 2006 – Jan 2008 |
| Griffin Ranch GU #1 G-6-170430 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 3.92K | 489K | Jul 1998 – Jul 2006 |
| Utzman,roma Oil Unit O-6-14532 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 3.09K | 80.5K | Jun 2006 – Jan 2008 |
| Barton, Martha Gas Unit G-6-125212 | Apache Corporation only | Danville (Travis Peak Cons.) | Gregg | 1 | 3.09K | 107K | Jan 1993 – Aug 1997 |
| Griffin, M.G.M. G-6-138064 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 2.16K | 364K | Jan 1993 – Jun 2003 |
| West Griffin Gas Unit G-6-134003 | Sonat Exploration Company -Tyler only | Danville (Travis Peak Cons.) | Gregg | 1 | 2.06K | 95.2K | Jan 1993 – Jan 1995 |
| Ballenger, D.I. et al Gas Unit G-6-137782 | Apache Corporation only | Danville (Travis Peak Cons.) | Gregg | 1 | 2.04K | 227K | Jan 1993 – Jun 1997 |
| Dickson, Starr GU #1 G-6-173379 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 1.94K | 19.7K | Jun 1999 – Jul 1999 |
| Flewellen G U #1 O-6-14668 | Burlington Resources O & G Co LP only | Danville (Travis Peak Cons.) | Gregg | 1 | 1.68K | 36K | May 2007 – Jan 2008 |
| Griffin Ranch G.U. 5 G-6-230125 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 1.35K | 69.2K | Jun 2007 – Oct 2007 |
| Flanagan G-6-154007 | Williams, Clayton Energy, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 936 | 69.7K | Mar 1995 – Sep 1999 |
| Griffin Ranch O.U. 5 O-6-14718 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 807 | 15.1K | Nov 2007 – Jan 2008 |
| Murphy O-6-13974 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 659 | 8.08K | Nov 1999 – Apr 2000 |
| Sharpe, Dot O-6-14689 | Samson Lone Star, LLC only | Danville (Travis Peak Cons.) | Gregg | 1 | 603 | 10.3K | Sep 2007 – Jan 2008 |
| City of Kilgore O-6-14692 | Bowles Energy, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 347 | 0 | Sep 2007 – Jan 2008 |
| Griffin Gas Unit G-6-170109 | Gruy Petroleum Management Co. only | Danville (Travis Peak Cons.) | Gregg | 1 | 244 | 40.2K | Jun 1998 – Mar 1999 |
| Dickson, Starr GU #1 G-6-204695 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 230 | 60K | Jul 2004 – Aug 2004 |
| Dickson, Starr GU #1 G-6-139113 | Sonat Exploration Company -Tyler only | Danville (Travis Peak Cons.) | Gregg | 1 | 142 | 525 | Jan 1993 – Dec 1993 |
| Horton, Toby Gas Unit No. 1 G-6-203929 | Burlington Resources O & G Co LP only | Danville (Travis Peak Cons.) | Gregg | 1 | 87 | 35.6K | Jul 2004 – Aug 2004 |
| Scales, T. O. G-6-15979 | Brammer Petroleum, Inc. only | Danville (Travis Peak Cons.) | Rusk | 1 | 30 | 7.52K | Jan 1993 – Oct 1995 |
| Toby Horton Gas Unit No. 1 G-6-224804 | Burlington Resources O & G Co LP only | Danville (Travis Peak Cons.) | Gregg | 1 | 0 | 0 | — |
| Griffin Ranch GU #1 G-6-224916 | Geo-Vest of Texas, Inc. only | Danville (Travis Peak Cons.) | Gregg | 1 | 0 | 0 | — |
| Gunn, Margaret G-6-224990 | Burlington Resources O & G Co LP only | Danville (Travis Peak Cons.) | Gregg | 1 | 0 | 0 | — |
| Flewellen G U #1 G-6-225256 | Burlington Resources O & G Co LP only | Danville (Travis Peak Cons.) | Gregg | 1 | 0 | 0 | — |
| Flewellen G U #1 G-6-226314 | Burlington Resources O & G Co LP only | Danville (Travis Peak Cons.) | Gregg | 1 | 0 | 0 | — |
| Flewellen G U #1 G-6-226317 | Burlington Resources O & G Co LP only | Danville (Travis Peak Cons.) | Gregg | 1 | 0 | 0 | — |
| Horton, Toby Gas Unit No. 1 G-6-226408 | Burlington Resources O & G Co LP only | Danville (Travis Peak Cons.) | Gregg | 1 | 0 | 0 | — |