| 615653 | Mar 16, 2006 | Mar 16, 2006 | Stroud Petroleum, Inc. | Phillips-Cox #1 | 8,700 | 29331802 |
| 615603 | Mar 16, 2006 | Mar 16, 2006 | XTO Energy Inc. | Griffiths Gas Unit No. 1 #4 | 9,709 | 29331117 |
| 615534 | Mar 16, 2006 | Mar 16, 2006 | XTO Energy Inc. | Lindley Gas Unit #3 | 14,000 | 29331801 |
| 615155 | Mar 15, 2006 | Mar 15, 2006 | XTO Energy Inc. | Chandler Gas Unit No. 1 #11 | 14,478 | 29331563 |
| 614604 | Feb 27, 2006 | Feb 27, 2006 | XTO Energy Inc. | Running Branch Gas Unit #1 | 14,200 | 29331800 |
| 614604Amendment | Feb 27, 2006 | Feb 27, 2006 | XTO Energy Inc. | Running Branch Gas Unit #1 | 14,200 | 29331800 |
| 614405 | Feb 24, 2006 | Feb 24, 2006 | XTO Energy Inc. | Reed "R" No. 1 Unit #17 | 13,500 | 29331798 |
| 614405Amendment | Feb 24, 2006 | Feb 24, 2006 | XTO Energy Inc. | Reed "R" No. 1 Unit #17 | 13,500 | 29331798 |
| 614439 | Feb 22, 2006 | Feb 22, 2006 | Devon Energy Production Co, L.P. | R. L. Renfroe #5 | 12,000 | 29331799 |
| 614220 | Feb 22, 2006 | Feb 22, 2006 | Encana Oil & Gas(usa) Inc. | Reed Unit #14 | 13,600 | 29331797 |
| 614220Amendment | Feb 22, 2006 | Feb 22, 2006 | Encana Oil & Gas(usa) Inc. | Reed Unit #14 | 13,150 | 29331797 |
| 612955 | Feb 8, 2006 | Feb 8, 2006 | Forum Exploration Co., L.P. | Sunday, R. Gerald #1 | 11,500 | 29331796 |
| 612624 | Jan 25, 2006 | Jan 25, 2006 | XTO Energy Inc. | Reed "P" No. 1 Gas Unit #10 | 13,800 | 29331794 |
| 612624Amendment | Jan 25, 2006 | Jan 25, 2006 | XTO Energy Inc. | Reed "P" No. 1 Gas Unit #10 | 13,800 | 29331794 |
| 612528 | Jan 25, 2006 | Jan 25, 2006 | XTO Energy Inc. | Gross, Richard H. et Al #9 | 13,500 | 29331793 |
| 612528Amendment | Jan 25, 2006 | Jan 25, 2006 | XTO Energy Inc. | Gross, Richard H. et Al #9 | 13,500 | 29331793 |
| 612528Amendment | Jan 25, 2006 | Jan 25, 2006 | XTO Energy Inc. | Gross, Richard H. et Al #9 | 13,500 | 29331793 |
| 612918 | Jan 24, 2006 | Jan 24, 2006 | O'Benco, Inc. | Doss GU #11 | 12,500 | 29331795 |
| 612267 | Jan 19, 2006 | Jan 19, 2006 | XTO Energy Inc. | W.o.stone Gas Unit NO.1 #20 | 14,500 | 29331792 |
| 612150 | Jan 18, 2006 | Jan 18, 2006 | XTO Energy Inc. | W. O. Stone Gas Unit No. 1 #17 | 14,500 | 29331790 |
| 612222 | Jan 11, 2006 | Jan 11, 2006 | Devon Energy Production Co, L.P. | R. F. Jackson "B" GU #4 | 12,000 | 29331789 |
| 611929 | Jan 11, 2006 | Jan 11, 2006 | Encana Oil & Gas(usa) Inc. | Reed Unit #13 | 13,700 | 29331788 |
| 611347 | Dec 29, 2005 | Dec 29, 2005 | XTO Energy Inc. | Reed Gas Unit II #7 | 14,500 | 29331787 |
| 611347Amendment | Dec 29, 2005 | Dec 29, 2005 | XTO Energy Inc. | Reed Gas Unit II #7 | 14,500 | 29331787 |
| 611345 | Dec 29, 2005 | Dec 29, 2005 | XTO Energy Inc. | Reed Gas Unit II #4 | 14,500 | 29331786 |
| 611345Amendment | Dec 29, 2005 | Dec 29, 2005 | XTO Energy Inc. | Reed Gas Unit II #4 | 14,500 | 29331786 |
| 611324 | Dec 28, 2005 | Dec 28, 2005 | Devon Energy Production Co, L.P. | Miles, C. A. "A" #2 | 12,000 | 29331785 |
| 611207 | Dec 22, 2005 | Dec 22, 2005 | XTO Energy Inc. | Reed "P" No. 1 Gas Unit #11 | 13,800 | 29331784 |
| 611207Amendment | Dec 22, 2005 | Dec 22, 2005 | XTO Energy Inc. | Reed "P" No. 1 Gas Unit #11 | 13,800 | 29331784 |
| 610820 | Dec 15, 2005 | Dec 15, 2005 | XTO Energy Inc. | W. O. Stone Gas Unit No. 1 #18 | 14,500 | 29331783 |
| 610819 | Dec 15, 2005 | Dec 15, 2005 | XTO Energy Inc. | Reed "R" No. 1 Unit #14 | 13,500 | 29331782 |
| 610819Amendment | Dec 15, 2005 | Dec 15, 2005 | XTO Energy Inc. | Reed "R" No. 1 Unit #14 | 13,500 | 29331782 |
| 610818 | Dec 15, 2005 | Dec 15, 2005 | XTO Energy Inc. | Reed "R" No. 1 Unit #15 | 13,500 | 29331781 |
| 610817 | Dec 14, 2005 | Dec 14, 2005 | XTO Energy Inc. | Reed "R" No. 1 Unit #16 | 13,500 | 29331780 |
| 610817Amendment | Dec 14, 2005 | Dec 14, 2005 | XTO Energy Inc. | Reed "R" No. 1 Unit #16 | 13,500 | 29331780 |
| 610810 | Dec 14, 2005 | Dec 14, 2005 | XTO Energy Inc. | Reed "R" No. 1 Unit #19 | 13,500 | 29331779 |
| 610810Amendment | Dec 14, 2005 | Dec 14, 2005 | XTO Energy Inc. | Reed "R" No. 1 Unit #19 | 13,500 | 29331779 |
| 610448 | Dec 7, 2005 | Dec 7, 2005 | XTO Energy Inc. | W. O. Stone Gas Unit No. 1 #16 | 14,300 | 29331778 |
| 610445 | Dec 7, 2005 | Dec 7, 2005 | XTO Energy Inc. | Reed "P" No. 1 Gas Unit #17 | 13,700 | 29331777 |
| 610445Amendment | Dec 7, 2005 | Dec 7, 2005 | XTO Energy Inc. | Reed "P" No. 1 Gas Unit #17 | 13,700 | 29331777 |
| 610199 | Dec 1, 2005 | Dec 1, 2005 | XTO Energy Inc. | Sims, Robert #1 | 14,000 | 29331774 |
| 610199Amendment | Dec 1, 2005 | Dec 1, 2005 | XTO Energy Inc. | Sims, Robert #1 | 14,000 | 29331774 |
| 610012 | Nov 29, 2005 | Nov 29, 2005 | Devon Energy Production Co, L.P. | Muse, McGillivray #7 | 12,000 | 29331773 |
| 609561 | Nov 18, 2005 | Nov 18, 2005 | XTO Energy Inc. | Sims, L. P. Brothers #1 | 14,000 | 29331772 |
| 609561Amendment | Nov 18, 2005 | Nov 18, 2005 | XTO Energy Inc. | Sims, L. P. Brothers #1 | 14,000 | 29331772 |
| 609325 | Nov 10, 2005 | Nov 10, 2005 | O'Benco, Inc. | Rickard Gas Unit #3 | 12,500 | 29331771 |
| 609324 | Nov 10, 2005 | Nov 10, 2005 | O'Benco, Inc. | Rickard Gas Unit #2 | 12,500 | 29331770 |
| 609324Amendment | Nov 10, 2005 | Nov 10, 2005 | O'Benco, Inc. | Rickard Gas Unit #2 | 13,200 | 29331770 |
| 608402 | Oct 28, 2005 | Oct 28, 2005 | XTO Energy Inc. | Chandler Gas Unit No. 1 #13 | 15,000 | 29331769 |
| 608402Amendment | Oct 28, 2005 | Oct 28, 2005 | XTO Energy Inc. | Chandler Gas Unit No. 1 #13 | 15,000 | 29331769 |
| 608339 | Oct 27, 2005 | Oct 27, 2005 | XTO Energy Inc. | Chandler Gas Unit No. 1 #3 | 15,000 | 29331768 |
| 608339Amendment | Oct 27, 2005 | Oct 27, 2005 | XTO Energy Inc. | Chandler Gas Unit No. 1 #3 | 15,000 | 29331768 |
| 608352 | Oct 24, 2005 | Oct 24, 2005 | Spence Energy Company | Kennedy #3 | 3,000 | 29331767 |
| 603933 | Oct 24, 2005 | Oct 24, 2005 | St. Mary Land & Exploration Co. | White #13 | 8,080 | 29331424 |
| 603933Amendment | Oct 24, 2005 | Oct 24, 2005 | St. Mary Land & Exploration Co. | White #13 | 8,080 | 29331424 |
| 608000 | Oct 20, 2005 | Oct 20, 2005 | XTO Energy Inc. | Standley Gas Unit No. 2 #14 | 14,500 | 29331765 |
| 607910 | Oct 20, 2005 | Oct 20, 2005 | XTO Energy Inc. | Standley Gas Unit No. 2 #12 | 14,500 | 29331763 |
| 607910Amendment | Oct 20, 2005 | Oct 20, 2005 | XTO Energy Inc. | Standley Gas Unit No. 2 #12 | 14,500 | 29331763 |
| 607845 | Oct 18, 2005 | Oct 18, 2005 | XTO Energy Inc. | Standley Gas Unit No. 2 #11 | 14,500 | 29331764 |
| 607758 | Oct 17, 2005 | Oct 17, 2005 | XTO Energy Inc. | Gibson #14 | 14,200 | 29331762 |
| 604960 | Oct 11, 2005 | Oct 11, 2005 | Valence Operating Company | Huffman "B" #22 | 14,000 | 29331722 |
| 607462 | Oct 10, 2005 | Oct 10, 2005 | O'Benco, Inc. | Doss GU #10 | 12,500 | 29331761 |
| 607020 | Sep 29, 2005 | Sep 29, 2005 | XTO Energy Inc. | Phillips "a" #1 Gas Unit #6 | 14,500 | 29331760 |
| 607019 | Sep 29, 2005 | Sep 29, 2005 | XTO Energy Inc. | Lyons Gas Unit No. 1 #20 | 14,200 | 29331759 |
| 607019Amendment | Sep 29, 2005 | Sep 29, 2005 | XTO Energy Inc. | Lyons Gas Unit No. 1 #20 | 14,200 | 29331759 |
| 607019Amendment | Sep 29, 2005 | Sep 29, 2005 | XTO Energy Inc. | Lyons Gas Unit No. 1 #20 | 14,200 | 29331759 |
| 606842 | Sep 26, 2005 | Sep 26, 2005 | O'Benco, Inc. | Sims, Alton #7 | 12,500 | 29331758 |
| 606842Amendment | Sep 26, 2005 | Sep 26, 2005 | O'Benco, Inc. | Sims, Alton #7 | 12,500 | 29331758 |
| 606683 | Sep 22, 2005 | Sep 22, 2005 | Encana Oil & Gas(usa) Inc. | Reed Unit #9 | 12,500 | 29331757 |
| 606683Amendment | Sep 22, 2005 | Sep 22, 2005 | Encana Oil & Gas(usa) Inc. | Reed Unit #9 | 13,220 | 29331757 |
| 606555 | Sep 20, 2005 | Sep 20, 2005 | XTO Energy Inc. | Phillips "a" #1 Gas Unit #16 | 14,500 | 29331756 |
| 606498 | Sep 20, 2005 | Sep 20, 2005 | XTO Energy Inc. | Phillips "a" #1 Gas Unit #15 | 14,500 | 29331755 |
| 606498Amendment | Sep 20, 2005 | Sep 20, 2005 | XTO Energy Inc. | Phillips "a" #1 Gas Unit #15 | 14,500 | 29331755 |
| 606516 | Sep 19, 2005 | Sep 19, 2005 | Brown Oil & Gas Co. | Carter, Elijah #1G | 6,500 | 29331754 |
| 606424 | Sep 19, 2005 | Sep 19, 2005 | XTO Energy Inc. | Phillips "a" #1 Gas Unit #9 | 14,500 | 29331751 |
| 606422 | Sep 19, 2005 | Sep 19, 2005 | XTO Energy Inc. | H. D. Thomas et al Gas Unit #12 | 13,400 | 29331753 |
| 606365 | Sep 15, 2005 | Sep 15, 2005 | Williamson, Don B. | Foreman, James A. #1 | 3,300 | 29331750 |
| 606103 | Sep 15, 2005 | Sep 15, 2005 | XTO Energy Inc. | Phillips "a" #1 Gas Unit #12 | 14,500 | 29331747 |
| 606103Amendment | Sep 15, 2005 | Sep 15, 2005 | XTO Energy Inc. | Phillips "a" #1 Gas Unit #12 | 14,500 | 29331747 |
| 605619 | Sep 13, 2005 | Sep 13, 2005 | Encana Oil & Gas(usa) Inc. | Reed Unit #8 | 12,600 | 29331749 |
| 606178 | Sep 12, 2005 | Sep 12, 2005 | O'Benco, Inc. | Doss GU #9 | 12,500 | 29331748 |
| 605851 | Sep 6, 2005 | Sep 6, 2005 | XTO Energy Inc. | Standley Gas Unit No. 2 #9 | 14,500 | 29331744 |
| 605849 | Sep 6, 2005 | Sep 6, 2005 | XTO Energy Inc. | Perlitz Gas Unit No. 1 #16 | 13,500 | 29331745 |
| 605849Amendment | Sep 6, 2005 | Sep 6, 2005 | XTO Energy Inc. | Perlitz Gas Unit No. 1 #16 | 15,000 | 29331745 |
| 605801 | Sep 2, 2005 | Sep 2, 2005 | XTO Energy Inc. | Perlitz Gas Unit No. 1 #9 | 14,500 | 29331739 |
| 605800 | Sep 2, 2005 | Sep 2, 2005 | XTO Energy Inc. | S. J. Harlow Gas Unit #5 | 13,300 | 29331740 |
| 605799 | Sep 2, 2005 | Sep 2, 2005 | XTO Energy Inc. | S. J. Harlow Gas Unit #6 | 13,300 | 29331741 |
| 605799Amendment | Sep 2, 2005 | Sep 2, 2005 | XTO Energy Inc. | S. J. Harlow Gas Unit #6 | 13,300 | 29331741 |
| 605796 | Sep 2, 2005 | Sep 2, 2005 | XTO Energy Inc. | S. J. Harlow Gas Unit #7 | 13,300 | 29331737 |
| 605731 | Sep 1, 2005 | Sep 1, 2005 | XTO Energy Inc. | Perlitz Gas Unit No. 1 #7 | 14,500 | 29331735 |
| 605647 | Aug 31, 2005 | Aug 31, 2005 | XTO Energy Inc. | Robert Shaw Gas Unit No. 1 #5 | 14,500 | 29331734 |
| 605647Amendment | Aug 31, 2005 | Aug 31, 2005 | XTO Energy Inc. | Robert Shaw Gas Unit No. 1 #5 | 14,500 | 29331734 |
| 605620 | Aug 30, 2005 | Aug 30, 2005 | Encana Oil & Gas(usa) Inc. | Reed Unit #6 | 13,600 | 29331732 |
| 605620Amendment | Aug 30, 2005 | Aug 30, 2005 | Encana Oil & Gas(usa) Inc. | Reed Unit #6 | 13,600 | 29331732 |
| 605613 | Aug 30, 2005 | Aug 30, 2005 | XTO Energy Inc. | Kellogg Creek #1 | 14,500 | 29331731 |
| 605588 | Aug 30, 2005 | Aug 30, 2005 | XTO Energy Inc. | Robert Shaw Gas Unit No. 1 #4 | 13,200 | 29331730 |
| 605493 | Aug 26, 2005 | Aug 26, 2005 | XTO Energy Inc. | Carpenter Gas Unit II #7 | 15,000 | 29332050 |
| 553563Amendment | Aug 25, 2005 | Aug 25, 2005 | XTO Energy Inc. | Carpenter Gas Unit II #2 | 14,800 | 29331634 |
| 553563Amendment | Aug 25, 2005 | Aug 25, 2005 | XTO Energy Inc. | Carpenter Gas Unit II #2 | 14,800 | 29331634 |
| 605235 | Aug 22, 2005 | Aug 22, 2005 | XTO Energy Inc. | Byrd Gas Unit #1 | 15,000 | 29330768 |