| 625462 | Oct 16, 2006 | Oct 16, 2006 | Questar Expl. and Prod. Co. | Roberts | Christie-Tipps "a" Sec 70 #10 | 12,500 | 39331877 |
| 623215 | Aug 1, 2006 | Aug 1, 2006 | Questar Expl. and Prod. Co. | Hemphill | Prater #9010 | 14,000 | 21133672 |
| 623215Amendment | Aug 1, 2006 | Aug 1, 2006 | Questar Expl. and Prod. Co. | Hemphill | Prater #9010 | 14,000 | 21133672 |
| 623142 | Jul 31, 2006 | Jul 31, 2006 | Questar Expl. and Prod. Co. | Hemphill | Prater #8010 | 14,000 | 21133670 |
| 623142Amendment | Jul 31, 2006 | Jul 31, 2006 | Questar Expl. and Prod. Co. | Hemphill | Prater #8010 | 14,000 | 21133670 |
| 622728 | Jul 17, 2006 | Jul 17, 2006 | Questar Expl. and Prod. Co. | Roberts | Martin #2050 | 10,200 | 39331860 |
| 620796 | Jun 14, 2006 | Jun 14, 2006 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie #A101RE | 10,200 | 39300021 |
| 619714 | Jun 1, 2006 | Jun 1, 2006 | Questar Expl. and Prod. Co. | Wheeler | Puryear #4027 | 16,000 | 48332122 |
| 619714Amendment | Jun 1, 2006 | Jun 1, 2006 | Questar Expl. and Prod. Co. | Wheeler | Puryear #4027 | 17,700 | 48332122 |
| 619590 | May 22, 2006 | May 22, 2006 | Questar Expl. and Prod. Co. | Roberts | Martin #1050RE | 10,200 | 39330229 |
| 618707 | May 12, 2006 | May 12, 2006 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie #201 | 10,200 | 39331839 |
| 616526 | May 10, 2006 | May 10, 2006 | Questar Expl. and Prod. Co. | Wheeler | Harris #108 | 16,000 | 48332078 |
| 617863 | Apr 27, 2006 | Apr 27, 2006 | Questar Expl. and Prod. Co. | Hemphill | Prater #7010 | 14,000 | 21133572 |
| 617149 | Apr 7, 2006 | Apr 7, 2006 | Questar Expl. and Prod. Co. | Wheeler | Hefley #101 | 16,000 | 48332090 |
| 617149Amendment | Apr 7, 2006 | Apr 7, 2006 | Questar Expl. and Prod. Co. | Wheeler | Hefley #101 | 16,000 | 48332090 |
| 611634 | Feb 14, 2006 | Feb 14, 2006 | Questar Expl. and Prod. Co. | Wheeler | Puryear #3013 | 15,200 | 48332012 |
| 611634Amendment | Feb 14, 2006 | Feb 14, 2006 | Questar Expl. and Prod. Co. | Wheeler | Puryear #3013 | 18,000 | 48332012 |
| 612421 | Feb 10, 2006 | Feb 10, 2006 | Questar Expl. and Prod. Co. | Wheeler | Puryear #2013RE | 16,000 | 48331682 |
| 613868 | Feb 9, 2006 | Feb 9, 2006 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie #9025 | 11,500 | 39331805 |
| 613868Amendment | Feb 9, 2006 | Feb 9, 2006 | Questar Expl. and Prod. Co. | Roberts | Christie-Tipps #9025 | 11,500 | 39331805 |
| 613868Amendment | Feb 9, 2006 | Feb 9, 2006 | Questar Expl. and Prod. Co. | Roberts | Christie-Tipps #9025 | 11,500 | 39331805 |
| 613864 | Feb 9, 2006 | Feb 9, 2006 | Questar Expl. and Prod. Co. | Roberts | Christie Tipps #1025 | 11,500 | 39331806 |
| 612621 | Jan 31, 2006 | Jan 31, 2006 | Questar Expl. and Prod. Co. | Wheeler | Morrison #1033RE | 16,000 | 48331085 |
| 612515 | Jan 18, 2006 | Jan 18, 2006 | Questar Expl. and Prod. Co. | Wheeler | Huff #2034 | 16,000 | 48332024 |
| 612515Amendment | Jan 18, 2006 | Jan 18, 2006 | Questar Expl. and Prod. Co. | Wheeler | Huff #2034 | 16,000 | 48332024 |
| 610368 | Dec 6, 2005 | Dec 6, 2005 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie #101 | 10,200 | 39331774 |
| 608482 | Oct 26, 2005 | Oct 26, 2005 | Questar Expl. and Prod. Co. | Shelby | Dance #1 | 10,700 | 41931035 |
| 603263 | Aug 17, 2005 | Aug 17, 2005 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie "A" #2070RE | 9,900 | 39330162 |
| 603262 | Aug 17, 2005 | Aug 17, 2005 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie "A" #8070 | 10,200 | 39331718 |
| 603859 | Jul 25, 2005 | Jul 25, 2005 | Questar Expl. and Prod. Co. | Hemphill | Prater #5010 | 13,650 | 21133368 |
| 603611 | Jul 19, 2005 | Jul 19, 2005 | Questar Expl. and Prod. Co. | Hemphill | Prater #6010 | 13,150 | 21133367 |
| 603610 | Jul 19, 2005 | Jul 19, 2005 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie #6025 | 11,000 | 39331720 |
| 603610Amendment | Jul 19, 2005 | Jul 19, 2005 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie #6025 | 11,000 | 39331720 |
| 600880 | May 19, 2005 | May 19, 2005 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie #8025 | 10,500 | 39331708 |
| 600365 | May 6, 2005 | May 6, 2005 | Questar Expl. and Prod. Co. | Roberts | Christie-Tipps "A" #9070 | 12,000 | 39331702 |
| 600218 | May 4, 2005 | May 4, 2005 | Questar Expl. and Prod. Co. | Roberts | Christie Tipps #7025 | 10,500 | 39331701 |
| 553796 | Feb 4, 2005 | Feb 4, 2005 | Questar Expl. and Prod. Co. | Houston | Warner Gas Unit #2 | 12,000 | 22531036 |
| 556938 | Jan 28, 2005 | Jan 28, 2005 | Questar Expl. and Prod. Co. | Hemphill | Prater #10SW | 6,200 | 21133202 |
| 556938Amendment | Jan 28, 2005 | Jan 28, 2005 | Questar Expl. and Prod. Co. | Hemphill | Prater #10SW | 6,200 | 21133202 |
| 554124 | Nov 29, 2004 | Nov 29, 2004 | Questar Expl. and Prod. Co. | Hemphill | Prater #4010 | 12,350 | 21133151 |
| 554124Amendment | Nov 29, 2004 | Nov 29, 2004 | Questar Expl. and Prod. Co. | Hemphill | Prater #4010 | 13,050 | 21133151 |
| 554122 | Nov 29, 2004 | Nov 29, 2004 | Questar Expl. and Prod. Co. | Hemphill | Prater #3010 | 12,350 | 21133150 |
| 554122Amendment | Nov 29, 2004 | Nov 29, 2004 | Questar Expl. and Prod. Co. | Hemphill | Prater #3010 | 13,050 | 21133150 |
| 550220 | Aug 27, 2004 | Aug 27, 2004 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie "A" #7070 | 10,200 | 39331637 |
| 550219 | Aug 27, 2004 | Aug 27, 2004 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie "A" #6070 | 9,950 | 39331636 |
| 550218 | Aug 27, 2004 | Aug 27, 2004 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie "A" #5070 | 10,100 | 39331635 |
| 546647 | Jun 8, 2004 | Jun 8, 2004 | Questar Expl. and Prod. Co. | Hemphill | Prater #2010 | 11,550 | 21133002 |
| 546647Amendment | Jun 8, 2004 | Jun 8, 2004 | Questar Expl. and Prod. Co. | Hemphill | Prater #2010 | 12,350 | 21133002 |
| 545658 | May 13, 2004 | May 13, 2004 | Questar Expl. and Prod. Co. | Ochiltree | Calliham #3472 | 9,200 | 35732446 |
| 545470 | May 7, 2004 | May 7, 2004 | Questar Expl. and Prod. Co. | Wheeler | Puryear #2028 | 12,400 | 48331692 |
| 545233 | May 3, 2004 | May 3, 2004 | Questar Expl. and Prod. Co. | Lipscomb | Piper #1629 | 9,300 | 29532758 |
| 545233Amendment | May 3, 2004 | May 3, 2004 | Questar Expl. and Prod. Co. | Lipscomb | Piper #1629 | 9,300 | 29532758 |
| 544125 | Apr 8, 2004 | Apr 8, 2004 | Questar Expl. and Prod. Co. | Wheeler | Puryear #3027 | 12,400 | 48331684 |
| 543802 | Apr 1, 2004 | Apr 1, 2004 | Questar Expl. and Prod. Co. | Wheeler | Puryear #2013 | 12,450 | 48331682 |
| 541307 | Feb 23, 2004 | Feb 23, 2004 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie "A" #2070 | 10,200 | 39331603 |
| 541355 | Jan 29, 2004 | Jan 29, 2004 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie "A" #4070 | 10,200 | 39331604 |
| 541035 | Jan 21, 2004 | Jan 21, 2004 | Questar Expl. and Prod. Co. | Roberts | Tipps, Christie "A" #3070 | 10,200 | 39331600 |
| 540548 | Jan 9, 2004 | Jan 9, 2004 | Questar Expl. and Prod. Co. | Potter | Bivins Ranch #2002 | 3,790 | 37531475 |
| 533586 | Jun 27, 2003 | Jun 27, 2003 | Questar Expl. and Prod. Co. | Hemphill | Humphreys #6037 | 7,400 | 21132787 |
| 532685 | Jun 3, 2003 | Jun 3, 2003 | Questar Expl. and Prod. Co. | Hemphill | Hodgson #2020 | 8,100 | 21132577 |
| 532682 | Jun 3, 2003 | Jun 3, 2003 | Questar Expl. and Prod. Co. | Hemphill | Hodgson #1021 | 8,000 | 21132650 |
| 530938 | Apr 28, 2003 | Apr 28, 2003 | Questar Expl. and Prod. Co. | Hemphill | Margaret #1021 | 7,900 | 21132749 |
| 530938Amendment | Apr 28, 2003 | Apr 28, 2003 | Questar Expl. and Prod. Co. | Hemphill | Margaret #1021 | 7,900 | 21132749 |
| 530499 | Apr 9, 2003 | Apr 9, 2003 | Questar Expl. and Prod. Co. | Wharton | Lancaster, W. H. #5 | 6,370 | 48101744 |
| 529666 | Apr 4, 2003 | Apr 4, 2003 | Questar Expl. and Prod. Co. | Gregg | H. M. Lawrence, Jr. et al GU #14 | 10,840 | 18331345 |
| 529590 | Mar 14, 2003 | Mar 14, 2003 | Questar Expl. and Prod. Co. | Wheeler | Puryear #2027 | 12,550 | 48331625 |
| 525704 | Dec 12, 2002 | Dec 12, 2002 | Questar Expl. and Prod. Co. | Gregg | Lawrence, H. M. Jr. et Al #16 | 11,500 | 18331540 |
| 525774 | Nov 22, 2002 | Nov 22, 2002 | Questar Expl. and Prod. Co. | Hemphill | Immel #3013 | 8,100 | 21132667 |
| 525773 | Nov 22, 2002 | Nov 22, 2002 | Questar Expl. and Prod. Co. | Hemphill | Nix #2080 | 11,200 | 21132666 |
| 524633 | Oct 17, 2002 | Oct 17, 2002 | Questar Expl. and Prod. Co. | Freestone | Oransky #2 | 12,000 | 16132461 |
| 523948 | Oct 9, 2002 | Oct 9, 2002 | Questar Expl. and Prod. Co. | Hemphill | Hodgson #1021 | 8,000 | 21132650 |
| 523345 | Sep 24, 2002 | Sep 24, 2002 | Questar Expl. and Prod. Co. | Hemphill | Humphreys #5038 | 7,400 | 21132649 |
| 522400 | Aug 1, 2002 | Aug 1, 2002 | Questar Expl. and Prod. Co. | Potter | Bivins Ranch #1203 | 6,000 | 37531615 |
| 517863 | Apr 15, 2002 | Apr 15, 2002 | Questar Expl. and Prod. Co. | Hemphill | Humphreys "K" #5048 | 7,300 | 21132578 |
| 517949 | Mar 4, 2002 | Mar 4, 2002 | Questar Expl. and Prod. Co. | Hemphill | Humphreys #4038 | 7,450 | 21132585 |
| 517864 | Feb 26, 2002 | Feb 26, 2002 | Questar Expl. and Prod. Co. | Hemphill | Hodgson #2020 | 7,350 | 21132577 |
| 517864Amendment | Feb 26, 2002 | Feb 26, 2002 | Questar Expl. and Prod. Co. | Hemphill | Hodgson #2020 | 8,100 | 21132577 |
| 513305 | Sep 6, 2001 | Sep 6, 2001 | Questar Expl. and Prod. Co. | Potter | Bivins Ranch #1503 | 6,000 | 37531641 |
| 513305Amendment | Sep 6, 2001 | Sep 6, 2001 | Questar Expl. and Prod. Co. | Potter | Bivins Ranch #1503 | 6,000 | 37531641 |
| 510992 | Jul 3, 2001 | Jul 3, 2001 | Questar Expl. and Prod. Co. | Wheeler | Britt Ranch "I" #304 | 12,600 | 48331610 |
| 508915 | Jun 14, 2001 | Jun 14, 2001 | Questar Expl. and Prod. Co. | Cherokee | Temple-Eastex "A" #4 | 12,000 | 07331003 |
| 508914 | Jun 14, 2001 | Jun 14, 2001 | Questar Expl. and Prod. Co. | Cherokee | Temple-Eastex "A" #5 | 12,000 | 07331002 |
| 506293 | Apr 27, 2001 | Apr 27, 2001 | Questar Expl. and Prod. Co. | Lipscomb | Tubb #2247 | 10,500 | 29532599 |
| 506293Amendment | Apr 27, 2001 | Apr 27, 2001 | Questar Expl. and Prod. Co. | Lipscomb | Tubb #2 | 10,500 | 29532599 |
| 500971 | Oct 18, 2000 | Oct 18, 2000 | Questar Expl. and Prod. Co. | Wheeler | Britt Ranch "C" #4035R | 12,500 | 48331591 |
| 498760 | Aug 31, 2000 | Aug 31, 2000 | Questar Expl. and Prod. Co. | Cherokee | Temple-Eastex "A" #3 | 12,000 | 07330985 |
| 498705 | Aug 23, 2000 | Aug 23, 2000 | Questar Expl. and Prod. Co. | Wheeler | Britt Ranch "E" #308 | 12,500 | 48331588 |
| 498704 | Aug 23, 2000 | Aug 23, 2000 | Questar Expl. and Prod. Co. | Wheeler | Britt Ranch "C" #4035 | 12,500 | 48331587 |
| 496156 | Jun 19, 2000 | Jun 19, 2000 | Questar Expl. and Prod. Co. | Wheeler | Stiles #3025 | 12,700 | 48331584 |
| 493687 | Apr 4, 2000 | Apr 4, 2000 | Questar Expl. and Prod. Co. | Hemphill | Hostutler #3054 | 8,200 | 21132421 |
| 493087 | Mar 21, 2000 | Mar 21, 2000 | Questar Expl. and Prod. Co. | Hemphill | Humphreys "K" #4 | 7,300 | 21132381 |
| 492359 | Feb 23, 2000 | Feb 23, 2000 | Questar Expl. and Prod. Co. | Hemphill | Humphreys -38- #3 | 11,700 | 21132415 |
| 492359Amendment | Feb 23, 2000 | Feb 23, 2000 | Questar Expl. and Prod. Co. | Hemphill | Humphreys #3 | 11,700 | 21132415 |
| 492359Amendment | Feb 23, 2000 | Feb 23, 2000 | Questar Expl. and Prod. Co. | Hemphill | Humphreys #3 | 11,700 | 21132415 |
| 490504 | Dec 22, 1999 | Dec 22, 1999 | Questar Expl. and Prod. Co. | Hemphill | Humphreys #2 | 7,300 | 21132401 |
| 490498 | Dec 22, 1999 | Dec 22, 1999 | Questar Expl. and Prod. Co. | Hemphill | Humphreys #5 | 7,300 | 21132402 |
| 489225 | Nov 8, 1999 | Nov 8, 1999 | Questar Expl. and Prod. Co. | Gregg | H. M. Lawrence, Jr. et al GU #15 | 4,750 | 18331389 |
| 489170 | Nov 5, 1999 | Nov 5, 1999 | Questar Expl. and Prod. Co. | Hemphill | Humphreys #4 | 7,300 | 21132395 |
| 489093 | Nov 4, 1999 | Nov 4, 1999 | Questar Expl. and Prod. Co. | Austin | Graf #1 | 9,924 | 01530393 |
| 488987 | Oct 29, 1999 | Oct 29, 1999 | Questar Expl. and Prod. Co. | Hemphill | Humphreys #3 | 7,300 | 21132394 |