| 621446 | Jun 22, 2006 | Jun 22, 2006 | Newfield Exploration Company | Mayfield "A" #1 | 11,500 | 13731846 |
| 621240 | Jun 21, 2006 | Jun 21, 2006 | Newfield Exploration Company | Cloudt #7601 | 11,000 | 13731845 |
| 620035 | May 26, 2006 | May 26, 2006 | Newfield Exploration Company | Earwood G U 1 #4 | 11,000 | 13731844 |
| 619965 | May 25, 2006 | May 25, 2006 | Newfield Exploration Company | Earwood "A" #13 | 11,000 | 13731843 |
| 619037 | May 10, 2006 | May 10, 2006 | Marshall & Winston, Inc. | Carpenter #1 | 7,000 | 13731841 |
| 618931 | May 9, 2006 | May 9, 2006 | Diamondback Operating, LP | Bowermaster "47 1/2" #4753 | 4,695 | 13730287 |
| 618930 | May 9, 2006 | May 9, 2006 | Diamondback Operating, LP | Bowermaster #4703 | 3,801 | 13730173 |
| 618628 | May 3, 2006 | May 3, 2006 | Newfield Exploration Company | Newby "151" #5 | 11,000 | 13731840 |
| 615831 | Apr 28, 2006 | Apr 28, 2006 | Rio-Tex, Inc. | Whitworth #501 | 6,000 | 13731828 |
| 618031 | Apr 24, 2006 | Apr 24, 2006 | PXP Texas Inc. | Peterson 81 #1HH | 5,000 | 13731839 |
| 618031Amendment | Apr 24, 2006 | Apr 24, 2006 | Occidental Permian Ltd. | Peterson 81 #1HH | 5,000 | 13731839 |
| 617993 | Apr 21, 2006 | Apr 21, 2006 | Newfield Exploration Company | Walker, R. C. #2 | 11,000 | 13731838 |
| 616451 | Apr 7, 2006 | Apr 7, 2006 | Great Western Drilling Company | Ward 18 #1 | 7,500 | 13731837 |
| 616973 | Apr 4, 2006 | Apr 4, 2006 | Newfield Exploration Company | Whitehead #4802 | 14,000 | 13731836 |
| 616766 | Mar 31, 2006 | Mar 31, 2006 | Dominion Oklahoma Texas E&P, Inc | Canyon Ranch #506E | 7,550 | 13731835 |
| 616282 | Mar 28, 2006 | Mar 28, 2006 | Great Western Drilling Company | Holman 25 #2 | 7,500 | 13731834 |
| 615832 | Mar 24, 2006 | Mar 24, 2006 | Rio-Tex, Inc. | Moody #5801 | 4,000 | 13731829 |
| 616055 | Mar 20, 2006 | Mar 20, 2006 | Newfield Exploration Company | Newby G U 3 #2 | 11,000 | 13731833 |
| 616048 | Mar 20, 2006 | Mar 20, 2006 | Newfield Exploration Company | Wittenburg #3601 | 10,000 | 13731832 |
| 616046 | Mar 20, 2006 | Mar 20, 2006 | Newfield Exploration Company | Davis #1101 | 10,000 | 13731831 |
| 616043 | Mar 20, 2006 | Mar 20, 2006 | Newfield Exploration Company | Davis #902 | 10,000 | 13731830 |
| 615400 | Mar 7, 2006 | Mar 7, 2006 | PXP Texas Inc. | Wardlaw #1HH | 10,500 | 13731827 |
| 615400Amendment | Mar 7, 2006 | Mar 7, 2006 | PXP Texas Inc. | Wardlaw #1H | 10,500 | 13731827 |
| 614961 | Mar 3, 2006 | Mar 3, 2006 | Chi Operating, Inc. | Diamondback "19" #1 | 10,500 | 13731826 |
| 614847 | Feb 27, 2006 | Feb 27, 2006 | Newfield Exploration Company | Four Square Ranch #12 | 7,500 | 13731753 |
| 614048 | Feb 13, 2006 | Feb 13, 2006 | Dominion Oklahoma Texas E&P, Inc | Peterson 54 #2 | 8,250 | 13731825 |
| 613514 | Feb 3, 2006 | Feb 3, 2006 | Newfield Exploration Company | Newby "A" #5 | 10,500 | 13731675 |
| 612600 | Jan 18, 2006 | Jan 18, 2006 | Newfield Exploration Company | Rolston #802 | 10,000 | 13731824 |
| 611916 | Jan 5, 2006 | Jan 5, 2006 | Diamondback Operating, LP | Bowermaster #4701 | 3,100 | 13730124 |
| 611832 | Jan 4, 2006 | Jan 4, 2006 | Dominion Oklahoma Texas E&P, Inc | Cloudt 68 #1 | 8,750 | 13731823 |
| 611832Amendment | Jan 4, 2006 | Jan 4, 2006 | Dominion Oklahoma Texas E&P, Inc | Cloudt 68 #1 | 8,750 | 13731823 |
| 611411 | Dec 28, 2005 | Dec 28, 2005 | Paragon Corporation | Mayfield #1 | 1,250 | 13731822 |
| 611029 | Dec 16, 2005 | Dec 16, 2005 | Newfield Exploration Company | Newby GU 2 #3 | 11,000 | 13731821 |
| 611026 | Dec 16, 2005 | Dec 16, 2005 | Newfield Exploration Company | Newby GU 1 #4 | 11,000 | 13731820 |
| 609526 | Nov 16, 2005 | Nov 16, 2005 | Newfield Exploration Company | Ralston #801 | 10,000 | 13731819 |
| 609205 | Nov 16, 2005 | Nov 16, 2005 | Newfield Exploration Company | Newby GU 1 #3 | 11,000 | 13731699 |
| 609126 | Nov 9, 2005 | Nov 9, 2005 | Swartz Oil Company | Vernor 10 #1 | 3,000 | 13731818 |
| 608867 | Nov 9, 2005 | Nov 9, 2005 | Newfield Exploration Company | Whitehead #7402 | 14,000 | 13731814 |
| 609215 | Nov 8, 2005 | Nov 8, 2005 | Fairway Links Energy, Inc. | Glasscock 18 #13 | 4,000 | 13731817 |
| 609215Amendment | Nov 8, 2005 | Nov 8, 2005 | Fairway Links Energy, Inc. | Glasscock 18 #13 | 4,500 | 13731817 |
| 609213 | Nov 8, 2005 | Nov 8, 2005 | Fairway Links Energy, Inc. | Glasscock 4 #16 | 4,000 | 13731816 |
| 609213Amendment | Nov 8, 2005 | Nov 8, 2005 | Fairway Links Energy, Inc. | Glasscock 4 #16 | 4,500 | 13731816 |
| 609211 | Nov 8, 2005 | Nov 8, 2005 | Fairway Links Energy, Inc. | Glasscock 26 #1 | 4,000 | 13731815 |
| 609211Amendment | Nov 8, 2005 | Nov 8, 2005 | Fairway Links Energy, Inc. | Glasscock 26 #1 | 4,500 | 13731815 |
| 608967 | Nov 4, 2005 | Nov 4, 2005 | Diamondback Operating, LP | Bowermaster "46" #4 | 8,000 | 13731722 |
| 608815 | Nov 4, 2005 | Nov 4, 2005 | Swartz Oil Company | Vernor #1 | 3,000 | 13730417 |
| 607570 | Oct 11, 2005 | Oct 11, 2005 | Great Western Drilling Company | Holman 25 #1 | 7,500 | 13731813 |
| 607454 | Oct 10, 2005 | Oct 10, 2005 | Newfield Exploration Company | Newby G. U. 1 #2 | 11,000 | 13731812 |
| 604858 | Oct 4, 2005 | Oct 4, 2005 | Paluxy Sands Corporation | Friess Bros. #E 3 | 600 | 13731805 |
| 604856 | Oct 4, 2005 | Oct 4, 2005 | Paluxy Sands Corporation | Friess Bros. #B 3 | 600 | 13731804 |
| 607010 | Sep 27, 2005 | Sep 27, 2005 | Dominion Oklahoma Texas E&P, Inc | Canyon Ranch #1204 E | 7,800 | 13731811 |
| 606415 | Sep 19, 2005 | Sep 19, 2005 | Newfield Exploration Company | Five C Ranch #5801 | 10,000 | 13731810 |
| 606043 | Sep 9, 2005 | Sep 9, 2005 | Dominion Oklahoma Texas E&P, Inc | Canyon Ranch #2194E | 7,500 | 13731809 |
| 606042 | Sep 8, 2005 | Sep 8, 2005 | Dominion Oklahoma Texas E&P, Inc | Canyon Ranch #2147E | 7,650 | 13731808 |
| 605835 | Sep 8, 2005 | Sep 8, 2005 | Newfield Exploration Company | Whitehead "46" #3 | 12,000 | 13731758 |
| 604515 | Sep 7, 2005 | Sep 7, 2005 | Newfield Exploration Company | Four Square Ranch #14 | 8,500 | 13731799 |
| 605775 | Sep 2, 2005 | Sep 2, 2005 | Great Western Drilling Company | Fagan, Randee 19 #1 | 7,500 | 13731807 |
| 605047 | Aug 17, 2005 | Aug 17, 2005 | Chi Operating, Inc. | Sandwedge #1 | 9,500 | 13731806 |
| 604831 | Aug 17, 2005 | Aug 17, 2005 | Newfield Exploration Company | Four Square Ranch #20 | 8,500 | 13731803 |
| 604226 | Aug 16, 2005 | Aug 16, 2005 | Newfield Exploration Company | Four Square Ranch #13 | 8,500 | 13731798 |
| 604226Amendment | Aug 16, 2005 | Aug 16, 2005 | Newfield Exploration Company | Four Square Ranch #13 | 8,500 | 13731798 |
| 604226Amendment | Aug 16, 2005 | Aug 16, 2005 | Newfield Exploration Company | Four Square Ranch #13 | 8,500 | 13731798 |
| 604760 | Aug 15, 2005 | Aug 15, 2005 | Newfield Exploration Company | Four Square Ranch #18 | 8,500 | 13731802 |
| 604755 | Aug 10, 2005 | Aug 10, 2005 | Newfield Exploration Company | Four Square Ranch #16 | 8,500 | 13731801 |
| 604755Amendment | Aug 10, 2005 | Aug 10, 2005 | Newfield Exploration Company | Four Square Ranch #16 | 8,500 | 13731801 |
| 604492 | Aug 8, 2005 | Aug 8, 2005 | Dominion Oklahoma Texas E&P, Inc | Newman 7 #1 | 8,250 | 13731800 |
| 604034 | Jul 27, 2005 | Jul 27, 2005 | Newfield Exploration Company | Hunt #4402 | 8,500 | 13731797 |
| 603982 | Jul 27, 2005 | Jul 27, 2005 | KLM Petroleum Corp. | RDR Turney 194 #1 | 7,200 | 13731796 |
| 603982Amendment | Jul 27, 2005 | Jul 27, 2005 | KLM Petroleum Corp. | RDR Turney 194 #1 | 7,200 | 13731796 |
| 603885 | Jul 26, 2005 | Jul 26, 2005 | Holmes Exploration, LLC | Jenkins #583H | 2,300 | 13731795 |
| 603349 | Jul 13, 2005 | Jul 13, 2005 | Dominion Oklahoma Texas E&P, Inc | Hough Trust 69 #1 | 9,350 | 13731794 |
| 602605 | Jun 27, 2005 | Jun 27, 2005 | Diamondback Operating, LP | Hyde #159 | 3,000 | 13731793 |
| 602085 | Jun 15, 2005 | Jun 15, 2005 | Cannon Texas, Inc | Bowermaster #4702H | 2,200 | 13731791 |
| 602085Amendment | Jun 15, 2005 | Jun 15, 2005 | Holmes Exploration, LLC | Bowermaster #4702H | 2,200 | 13731791 |
| 602084 | Jun 15, 2005 | Jun 15, 2005 | Cannon Texas, Inc | Bowermaster #4752H | 2,200 | 13731792 |
| 602084Amendment | Jun 15, 2005 | Jun 15, 2005 | Holmes Exploration, LLC | Bowermaster #4752H | 2,200 | 13731792 |
| 602084Amendment | Jun 15, 2005 | Jun 15, 2005 | Holmes Exploration, LLC | Bowermaster #4752H | 2,200 | 13731792 |
| 602084Amendment | Jun 15, 2005 | Jun 15, 2005 | Diamondback Operating, LP | Bowermaster #4752H | 2,200 | 13731792 |
| 601691 | Jun 8, 2005 | Jun 8, 2005 | Range Production Company | Miers, W. L. -B- #58 | 4,500 | 13731790 |
| 601390 | May 31, 2005 | May 31, 2005 | Sage Energy Company | Graham #1 | 4,000 | 13731789 |
| 601390Amendment | May 31, 2005 | May 31, 2005 | Sage Energy Company | Graham #1 | 4,000 | 13731789 |
| 600804 | May 19, 2005 | May 19, 2005 | Chi Operating, Inc. | Fred #3 | 6,400 | 13731788 |
| 600804Amendment | May 19, 2005 | May 19, 2005 | Chi Operating, Inc. | Fred #3 | 6,400 | 13731788 |
| 560689 | Apr 20, 2005 | Apr 20, 2005 | Rio-Tex, Inc. | Outpost #6601 | 13,000 | 13731787 |
| 559278 | Mar 21, 2005 | Mar 21, 2005 | Dominion Oklahoma Texas E&P, Inc | Canyon Ranch #2093 E | 7,000 | 13731786 |
| 559278Amendment | Mar 21, 2005 | Mar 21, 2005 | Dominion Oklahoma Texas E&P, Inc | Canyon Ranch #2093 E | 7,000 | 13731786 |
| 558917 | Mar 17, 2005 | Mar 17, 2005 | Qualia, C. F. Operating Inc. | Epperson #3 | 3,500 | 13731785 |
| 558917Amendment | Mar 17, 2005 | Mar 17, 2005 | Qualia, C. F. Operating Inc. | Epperson #3 | 5,603 | 13731785 |
| 558822 | Mar 15, 2005 | Mar 15, 2005 | Rio-Tex, Inc. | Whitehead #8901 | 13,000 | 13731784 |
| 558800 | Mar 14, 2005 | Mar 14, 2005 | Great Western Drilling Company | Randee Fagan 24 #1 | 7,400 | 13731783 |
| 558492 | Mar 3, 2005 | Mar 3, 2005 | Newfield Exploration Company | Davis #7702 | 10,000 | 13731780 |
| 558490 | Mar 3, 2005 | Mar 3, 2005 | Newfield Exploration Company | Davis #901 | 10,000 | 13731779 |
| 558489 | Mar 3, 2005 | Mar 3, 2005 | Newfield Exploration Company | Shaw #6202 | 10,000 | 13731781 |
| 558488 | Mar 3, 2005 | Mar 3, 2005 | Newfield Exploration Company | Five C Ranch #6302 | 10,000 | 13731782 |
| 557536 | Feb 10, 2005 | Feb 10, 2005 | Dominion Oklahoma Texas E&P, Inc | Canyon Ranch #507E | 7,400 | 13731778 |
| 557208 | Feb 3, 2005 | Feb 3, 2005 | Dominion Oklahoma Texas E&P, Inc | Canyon Ranch #2082E | 6,850 | 13731777 |
| 556328 | Jan 18, 2005 | Jan 18, 2005 | Dominion Oklahoma Texas E&P, Inc | Canyon Ranch #123E | 7,600 | 13731776 |
| 546358Amendment | Dec 21, 2004 | Dec 21, 2004 | Devon Louisiana Corporation | Epperson, James E. #2 | 4,900 | 13731742 |
| 555077 | Dec 20, 2004 | Dec 20, 2004 | Newfield Exploration Company | Whitehead "46" #4 | 12,000 | 13731775 |
| 554303 | Dec 2, 2004 | Dec 2, 2004 | Newfield Exploration Company | Davis #7701 | 10,000 | 13731774 |