| 665944 | Jul 23, 2008 | Jul 23, 2008 | Sonerra Resources Corporation | Nacogdoches | Henderson #1 | 11,000 | 34732875 |
| 664936 | Jun 19, 2008 | Jun 19, 2008 | Sonerra Resources Corporation | Nacogdoches | Black Hawk #1 | 11,200 | 34732852 |
| 661450 | May 23, 2008 | May 23, 2008 | Sonerra Resources Corporation | Nacogdoches | Soaring Wind #1 | 11,200 | 34732835 |
| 642316 | Jul 12, 2007 | Jul 12, 2007 | Sonerra Resources Corporation | Nacogdoches | Raymond Smith #1 | 12,500 | 34732585 |
| 640295 | Jun 21, 2007 | Jun 21, 2007 | Sonerra Resources Corporation | Nacogdoches | Amaladeros Basin #1 #1 | 12,500 | 34732374 |
| 636608 | May 25, 2007 | May 25, 2007 | Sonerra Resources Corporation | Nacogdoches | Ten Bears #2 | 8,500 | 34731812 |
| 639071 | May 19, 2007 | May 19, 2007 | Sonerra Resources Corporation | Nacogdoches | Dream Catcher #1 | 12,500 | 34732231 |
| 626191 | Sep 19, 2006 | Sep 19, 2006 | Sonerra Resources Corporation | Nacogdoches | Tandakee #1 | 12,500 | 34732384 |
| 626191Amendment | Sep 19, 2006 | Sep 19, 2006 | Sonerra Resources Corporation | Nacogdoches | Tandakee #1 | 12,500 | 34732384 |
| 625296 | Sep 1, 2006 | Sep 1, 2006 | Sonerra Resources Corporation | Nacogdoches | Amaladeros Basin #1 #1 | 12,500 | 34732374 |
| 624089 | Aug 9, 2006 | Aug 9, 2006 | Sonerra Resources Corporation | Nacogdoches | Thunderbolt #1H | 9,000 | 34732361 |
| 622036 | Jul 5, 2006 | Jul 5, 2006 | Sonerra Resources Corporation | Nacogdoches | Star Duster #1 | 9,000 | 34732325 |
| 622036Amendment | Jul 5, 2006 | Jul 5, 2006 | Sonerra Resources Corporation | Nacogdoches | Star Duster #1H | 9,000 | 34732325 |
| 620506 | Jun 6, 2006 | Jun 6, 2006 | Sonerra Resources Corporation | Nacogdoches | Midnight Sun #1 | 9,000 | 34732306 |
| 620506Amendment | Jun 6, 2006 | Jun 6, 2006 | Sonerra Resources Corporation | Nacogdoches | Midnight Sun #1H | 9,000 | 34732306 |
| 618742 | May 5, 2006 | May 5, 2006 | Sonerra Resources Corporation | Nacogdoches | Lone Wolf #1H | 8,500 | 34732286 |
| 618742Amendment | May 5, 2006 | May 5, 2006 | Sonerra Resources Corporation | Nacogdoches | Lone Wolf #1H | 8,500 | 34732286 |
| 617014 | Apr 6, 2006 | Apr 6, 2006 | Sonerra Resources Corporation | Nacogdoches | Raging Storm #1H | 9,000 | 34732258 |
| 617014Amendment | Apr 6, 2006 | Apr 6, 2006 | Sonerra Resources Corporation | Nacogdoches | Raging Storm #1H | 7,777 | 34732258 |
| 617014Amendment | Apr 6, 2006 | Apr 6, 2006 | Sonerra Resources Corporation | Nacogdoches | Raging Storm #1H | 8,700 | 34732258 |
| 614829 | Feb 27, 2006 | Feb 27, 2006 | Sonerra Resources Corporation | Nacogdoches | Dream Catcher #1 | 12,500 | 34732231 |
| 613335 | Feb 1, 2006 | Feb 1, 2006 | Sonerra Resources Corporation | Nacogdoches | Two Moons "2" #2H | 9,000 | 34732211 |
| 611771 | Jan 9, 2006 | Jan 9, 2006 | Sonerra Resources Corporation | Nacogdoches | Two Moons #1 | 13,500 | 34732190 |
| 611771Amendment | Jan 9, 2006 | Jan 9, 2006 | Sonerra Resources Corporation | Nacogdoches | Two Moons #1H | 13,500 | 34732190 |
| 611771Amendment | Jan 9, 2006 | Jan 9, 2006 | Sonerra Resources Corporation | Nacogdoches | Two Moons #1H | 13,500 | 34732190 |
| 609346 | Nov 10, 2005 | Nov 10, 2005 | Sonerra Resources Corporation | Nacogdoches | Rising Sun #1 | 13,500 | 34732165 |
| 609346Amendment | Nov 10, 2005 | Nov 10, 2005 | Sonerra Resources Corporation | Nacogdoches | Rising Sun #1 | 13,500 | 34732165 |
| 607394 | Oct 5, 2005 | Oct 5, 2005 | Sonerra Resources Corporation | Nacogdoches | Kicking Bear #1 | 12,500 | 34732148 |
| 607394Amendment | Oct 5, 2005 | Oct 5, 2005 | Sonerra Resources Corporation | Nacogdoches | Kicking Bear #1H | 8,500 | 34732148 |
| 606219 | Sep 13, 2005 | Sep 13, 2005 | Sonerra Resources Corporation | Nacogdoches | Painted Horse #1 | 12,500 | 34732007 |
| 606219Amendment | Sep 13, 2005 | Sep 13, 2005 | Sonerra Resources Corporation | Nacogdoches | Painted Horse #1 | 12,500 | 34732007 |
| 604994 | Aug 16, 2005 | Aug 16, 2005 | Sonerra Resources Corporation | Nacogdoches | Wind Dancer #1H | 9,000 | 34732117 |
| 602263 | Jun 17, 2005 | Jun 17, 2005 | Sonerra Resources Corporation | Nacogdoches | Night Spirit #1 | 12,000 | 34732076 |
| 602263Amendment | Jun 17, 2005 | Jun 17, 2005 | Sonerra Resources Corporation | Nacogdoches | Night Spirit #1H | 12,000 | 34732076 |
| 600360 | May 9, 2005 | May 9, 2005 | Sonerra Resources Corporation | Nacogdoches | Thunder Chief #1 | 11,000 | 34732056 |
| 600360Amendment | May 9, 2005 | May 9, 2005 | Sonerra Resources Corporation | Nacogdoches | Thunder Chief #1H | 8,500 | 34732056 |
| 559663 | Mar 29, 2005 | Mar 29, 2005 | Sonerra Resources Corporation | Nacogdoches | Looking Glass #1 | 11,000 | 34732034 |
| 559663Amendment | Mar 29, 2005 | Mar 29, 2005 | Sonerra Resources Corporation | Nacogdoches | Looking Glass #1H | 9,000 | 34732034 |
| 558639 | Mar 7, 2005 | Mar 7, 2005 | Sonerra Resources Corporation | Nacogdoches | Whirlwind #1H | 9,000 | 34732019 |
| 556824 | Jan 26, 2005 | Jan 26, 2005 | Sonerra Resources Corporation | Nacogdoches | Painted Horse #1H | 9,000 | 34732007 |
| 555403 | Dec 28, 2004 | Dec 28, 2004 | Sonerra Resources Corporation | Nacogdoches | Wicked Wolf #1H | 9,000 | 34731996 |
| 555403Amendment | Dec 28, 2004 | Dec 28, 2004 | Sonerra Resources Corporation | Nacogdoches | Wicked Wolf #1H | 9,000 | 34731996 |
| 555403Amendment | Dec 28, 2004 | Dec 28, 2004 | Sonerra Resources Corporation | Nacogdoches | Wicked Wolf #1H | 9,000 | 34731996 |
| 553688 | Nov 16, 2004 | Nov 16, 2004 | Sonerra Resources Corporation | Nacogdoches | Ten Bears #2 | 12,000 | 34731812 |
| 553632 | Nov 15, 2004 | Nov 15, 2004 | Sonerra Resources Corporation | Nacogdoches | Ten Bears #1 | 9,200 | 34731785 |
| 552942 | Oct 28, 2004 | Oct 28, 2004 | Sonerra Resources Corporation | Nacogdoches | Round Mountain #1H | 9,000 | 34731985 |
| 551802 | Oct 1, 2004 | Oct 1, 2004 | Sonerra Resources Corporation | Nacogdoches | Screaming Eagle #1 | 9,000 | 34731976 |
| 551802Amendment | Oct 1, 2004 | Oct 1, 2004 | Sonerra Resources Corporation | Nacogdoches | Screaming Eagle #1 | 9,000 | 34731976 |
| 551040 | Sep 15, 2004 | Sep 15, 2004 | Sonerra Resources Corporation | Nacogdoches | Silver Wings #1H | 8,500 | 34731966 |
| 549907 | Aug 20, 2004 | Aug 20, 2004 | Sonerra Resources Corporation | Nacogdoches | Dancing Cloud #1H | 8,500 | 34731953 |
| 548898 | Jul 29, 2004 | Jul 29, 2004 | Sonerra Resources Corporation | Nacogdoches | Red Cloud #1H | 8,500 | 34731939 |
| 547061 | Jun 17, 2004 | Jun 17, 2004 | Sonerra Resources Corporation | Sabine | Temple Inland #1 | 13,000 | 40330441 |
| 546114 | May 26, 2004 | May 26, 2004 | Sonerra Resources Corporation | Nacogdoches | Two Strike #1H | 8,500 | 34731904 |
| 544567 | Apr 16, 2004 | Apr 16, 2004 | Sonerra Resources Corporation | Nacogdoches | Medicine Man #1H | 8,500 | 34731892 |
| 543380 | Mar 17, 2004 | Mar 17, 2004 | Sonerra Resources Corporation | Sabine | B.P. Fee #1R | 13,000 | 40330394 |
| 542607 | Feb 27, 2004 | Feb 27, 2004 | Sonerra Resources Corporation | Nacogdoches | Sky Chief #1H | 8,500 | 34731884 |
| 539750 | Dec 16, 2003 | Dec 16, 2003 | Sonerra Resources Corporation | Nacogdoches | White Thunder #1H | 8,700 | 34731858 |
| 530001 | Mar 26, 2003 | Mar 26, 2003 | Sonerra Resources Corporation | Nacogdoches | Ten Bears #2 | 12,000 | 34731812 |
| 530001Amendment | Mar 26, 2003 | Mar 26, 2003 | Sonerra Resources Corporation | Nacogdoches | Ten Bears #2 | 9,780 | 34731812 |
| 526519 | Dec 18, 2002 | Dec 18, 2002 | Sonerra Resources Corporation | Nacogdoches | Ten Bears #1 | 13,600 | 34731785 |
| 510579 | Jun 21, 2001 | Jun 21, 2001 | Sonerra Resources Corporation | Nacogdoches | Soaring Eagle #1H | 8,500 | 34731717 |
| 510579Amendment | Jun 21, 2001 | Jun 21, 2001 | Sonerra Resources Corporation | Nacogdoches | Soaring Eagle #1H | 8,500 | 34731717 |
| 504473 | Jan 24, 2001 | Jan 24, 2001 | Sonerra Resources Corporation | Nacogdoches | Sitting Bull #1H | 8,500 | 34731694 |
| 501246 | Oct 26, 2000 | Oct 26, 2000 | Sonerra Resources Corporation | Nacogdoches | Crazy Horse #1H | 8,500 | 34731682 |
| 501246Amendment | Oct 26, 2000 | Oct 26, 2000 | Sonerra Resources Corporation | Nacogdoches | Crazy Horse #1H | 8,500 | 34731682 |
| 498127 | Aug 7, 2000 | Aug 7, 2000 | Sonerra Resources Corporation | Nacogdoches | Kendrick #1HH | 9,250 | 34731678 |
| 498127Amendment | Aug 7, 2000 | Aug 7, 2000 | Sonerra Resources Corporation | Nacogdoches | Kendrick #1HH | 8,500 | 34731678 |
| 494508 | Apr 27, 2000 | Apr 27, 2000 | Sonerra Resources Corporation | San Augustine | Five Fingers #4 | 2,600 | 40530187 |
| 489536 | Nov 16, 1999 | Nov 16, 1999 | Sonerra Resources Corporation | Sabine | County Line #3 | 2,500 | 40330436 |
| 486988 | Aug 26, 1999 | Aug 26, 1999 | Sonerra Resources Corporation | Sabine | Bluewater #3 | 2,600 | 40530193 |
| 486776 | Aug 19, 1999 | Aug 19, 1999 | Sonerra Resources Corporation | San Augustine | Five Fingers #3 | 2,600 | 40530186 |
| 485227 | Jun 15, 1999 | Jun 15, 1999 | Sonerra Resources Corporation | San Augustine | County Line #2 | 2,600 | 40530185 |
| 484559 | May 17, 1999 | May 17, 1999 | Sonerra Resources Corporation | San Augustine | Five Fingers #2 | 2,600 | 40530184 |
| 482991 | Mar 1, 1999 | Mar 1, 1999 | Sonerra Resources Corporation | San Augustine | Bluewater #2 | 2,600 | 40530183 |
| 482704 | Feb 16, 1999 | Feb 16, 1999 | Sonerra Resources Corporation | San Augustine | Five Fingers #1 | 2,600 | 40530182 |
| 481963 | Jan 11, 1999 | Jan 11, 1999 | Sonerra Resources Corporation | Sabine | County Line #1 | 4,000 | 40330434 |
| 480809 | Nov 12, 1998 | Nov 12, 1998 | Sonerra Resources Corporation | San Augustine | Arco/Carrizo #7 | 2,600 | 40530181 |
| 478676 | Aug 12, 1998 | Aug 12, 1998 | Sonerra Resources Corporation | San Augustine | Bluewater #1 | 6,000 | 40530180 |
| 478671 | Aug 11, 1998 | Aug 11, 1998 | Sonerra Resources Corporation | San Augustine | Arco/Carrizo #6 | 2,600 | 40530179 |
| 475447 | Apr 20, 1998 | Apr 20, 1998 | Sonerra Resources Corporation | San Augustine | Arco/Carrizo #5 | 2,600 | 40530178 |
| 465074 | Jul 18, 1997 | Jul 18, 1997 | Sonerra Resources Corporation | San Augustine | Arco/Carrizo #4 | 2,600 | 40530177 |
| 461481 | Apr 22, 1997 | Apr 22, 1997 | Sonerra Resources Corporation | San Augustine | Arco/Carrizo #3 | 2,600 | 40530174 |
| 457556 | Jan 21, 1997 | Jan 21, 1997 | Sonerra Resources Corporation | San Augustine | Arco/Carrizo #2 | 2,600 | 40530173 |
| 441541 | Nov 3, 1995 | Nov 3, 1995 | Sonerra Resources Corporation | Sabine | Bear Creek #4 | 2,500 | 40330418 |
| 438136 | Jul 24, 1995 | Jul 24, 1995 | Sonerra Resources Corporation | Sabine | Warner #1 | 5,500 | 40330416 |
| 434701 | Apr 10, 1995 | Apr 10, 1995 | Sonerra Resources Corporation | Sabine | Bear Creek #1 | 2,800 | 40330411 |
| 429087 | Oct 14, 1994 | Oct 14, 1994 | Sonerra Resources Corporation | Sabine | Vastar Fee #1 | 13,000 | 40330394 |
| 429087Amendment | Oct 14, 1994 | Oct 14, 1994 | Sonerra Resources Corporation | Sabine | Vastar Fee #1H | 9,500 | 40330394 |
| 411406 | May 6, 1993 | May 6, 1993 | Sonerra Resources Corporation | San Augustine | Arco/Carrizo #1 | 3,000 | 40530151 |
| 357130 | Mar 16, 1989 | Mar 16, 1989 | Sonerra Resources Corporation | Nacogdoches | Fuller, Nellie #1 | 5,400 | 34731554 |
| 354714 | Dec 28, 1988 | Dec 28, 1988 | Sonerra Resources Corporation | Trinity | Vanecek #1 | 4,500 | 45530396 |