| 627647 | Oct 24, 2006 | Oct 24, 2006 | O'Benco, Inc. | Bobby Reed Gas Unit #11 | 12,500 | 29331882 |
| 627629 | Oct 24, 2006 | Oct 24, 2006 | XTO Energy Inc. | F. D. Connell Gas Unit No. 1 #4 | 12,400 | 29331881 |
| 627550 | Oct 23, 2006 | Oct 23, 2006 | XTO Energy Inc. | Reed "R" No. 1 Unit #6 | 13,300 | 29331616 |
| 627487 | Oct 23, 2006 | Oct 23, 2006 | XTO Energy Inc. | Morton No. 1 Gas Unit #23 | 13,200 | 29331880 |
| 627433 | Oct 23, 2006 | Oct 23, 2006 | O'Benco, Inc. | Sims, Alton #8 | 12,500 | 29331879 |
| 626021 | Oct 19, 2006 | Oct 19, 2006 | XTO Energy Inc. | Jacoby-Harris Gas Unit NO.1 #13 | 14,000 | 29331872 |
| 627190 | Oct 18, 2006 | Oct 18, 2006 | O'Benco, Inc. | Bobby Reed Gas Unit #10 | 12,800 | 29331877 |
| 627570 | Oct 16, 2006 | Oct 16, 2006 | St. Mary Land & Exploration Co. | White #15 | 8,500 | 29331878 |
| 627142 | Oct 6, 2006 | Oct 6, 2006 | Stroud Petroleum, Inc. | Jack Carlson #2 | 12,000 | 29331876 |
| 626836 | Oct 6, 2006 | Oct 6, 2006 | Samson Lone Star LP | Lowell K. White Gas Unit #1 | 11,500 | 29331875 |
| 626464 | Sep 29, 2006 | Sep 29, 2006 | O'Benco, Inc. | Rickard Gas Unit #4 | 12,500 | 29331874 |
| 626304 | Sep 29, 2006 | Sep 29, 2006 | XTO Energy Inc. | C & W Gas Unit No. 1 #5HH | 17,000 | 29331873 |
| 625844 | Sep 13, 2006 | Sep 13, 2006 | XTO Energy Inc. | Gross, Richard H. et Al #21 | 13,800 | 29331871 |
| 625384 | Sep 5, 2006 | Sep 5, 2006 | Lci Management, LLC | Horizon #1 | 3,000 | 29331870 |
| 624820 | Aug 28, 2006 | Aug 28, 2006 | XTO Energy Inc. | Morton No. 1 Gas Unit #1 | 13,400 | 29330512 |
| 624620 | Aug 28, 2006 | Aug 28, 2006 | XTO Energy Inc. | Morton No. 1 Gas Unit #24 | 13,200 | 29331869 |
| 624114 | Aug 28, 2006 | Aug 28, 2006 | Comstock Oil & Gas, LP | Jackson #3 | 8,595 | 29331281 |
| 624612 | Aug 23, 2006 | Aug 23, 2006 | XTO Energy Inc. | Gilliam "B" No. 1 Gas Unit #18 | 13,200 | 29331867 |
| 624459 | Aug 23, 2006 | Aug 23, 2006 | XTO Energy Inc. | Beddingfield Gas Unit #5 | 15,500 | 29331866 |
| 624112 | Aug 23, 2006 | Aug 23, 2006 | Brown Oil & Gas Co. | Hayter, W. J. #H 1 | 3,200 | 29331865 |
| 624005 | Aug 18, 2006 | Aug 18, 2006 | XTO Energy Inc. | B.W. Thompson Gas Unit No. 1 #21 | 14,500 | 29331864 |
| 623872 | Aug 15, 2006 | Aug 15, 2006 | XTO Energy Inc. | Triple H Ranch Gas Unit No. 1 #16 | 14,000 | 29331863 |
| 623874 | Aug 14, 2006 | Aug 14, 2006 | XTO Energy Inc. | Kellogg Creek #1 | 14,500 | 29331731 |
| 623666 | Aug 8, 2006 | Aug 8, 2006 | XTO Energy Inc. | Hudson "B" Gas Unit #7 | 13,300 | 29331608 |
| 623282 | Aug 3, 2006 | Aug 3, 2006 | XTO Energy Inc. | Chandler Gas Unit NO.1 #8 | 13,800 | 29331861 |
| 623282Amendment | Aug 3, 2006 | Aug 3, 2006 | XTO Energy Inc. | Chandler Gas Unit NO.1 #8 | 13,800 | 29331861 |
| 623213 | Aug 2, 2006 | Aug 2, 2006 | XTO Energy Inc. | Chandler Gas Unit No. 1 #7 | 13,800 | 29331860 |
| 622584 | Jul 14, 2006 | Jul 14, 2006 | Devon Energy Production Co, L.P. | Everett, M. W. GU #10HH | 12,500 | 29331859 |
| 622584Amendment | Jul 14, 2006 | Jul 14, 2006 | Devon Energy Production Co, L.P. | Everett, M. W. GU #10HH | 12,500 | 29331859 |
| 622584Amendment | Jul 14, 2006 | Jul 14, 2006 | Devon Energy Production Co, L.P. | Everett, M. W. GU #10HH | 12,500 | 29331859 |
| 621868 | Jul 13, 2006 | Jul 13, 2006 | XTO Energy Inc. | Gilliam "C" No. 2 Gas Unit #21 | 13,300 | 29331856 |
| 622260 | Jul 10, 2006 | Jul 10, 2006 | KCS Resources, Inc. | Lowry Gas Unit #1 | 11,500 | 29331857 |
| 621612 | Jul 3, 2006 | Jul 3, 2006 | XTO Energy Inc. | Sims, L. P. Brothers Gas Unit #3 | 13,500 | 29331851 |
| 621542 | Jun 30, 2006 | Jun 30, 2006 | XTO Energy Inc. | Braselton #1 | 13,600 | 29331850 |
| 621542Amendment | Jun 30, 2006 | Jun 30, 2006 | XTO Energy Inc. | Braselton Gas Unit #1 | 13,600 | 29331850 |
| 621547 | Jun 29, 2006 | Jun 29, 2006 | XTO Energy Inc. | W. O. Stone Gas Unit No. 1 #19 | 14,500 | 29331849 |
| 621476 | Jun 28, 2006 | Jun 28, 2006 | XTO Energy Inc. | Sims, Robert #4 | 14,500 | 29331848 |
| 621393 | Jun 27, 2006 | Jun 27, 2006 | XTO Energy Inc. | L. P. Sims Brothers #2 | 13,500 | 29331847 |
| 621327 | Jun 26, 2006 | Jun 26, 2006 | XTO Energy Inc. | S. J. Harlow Gas Unit #12 | 13,200 | 29331845 |
| 621325 | Jun 26, 2006 | Jun 26, 2006 | XTO Energy Inc. | S. J. Harlow Gas Unit #9 | 13,200 | 29331846 |
| 621195 | Jun 23, 2006 | Jun 23, 2006 | XTO Energy Inc. | Reed "R" NO.1 Unit #10 | 13,500 | 29331670 |
| 620871 | Jun 19, 2006 | Jun 19, 2006 | Comstock Oil & Gas, LP | Jackson A #1 | 7,852 | 29330776 |
| 620742 | Jun 15, 2006 | Jun 15, 2006 | XTO Energy Inc. | Hudson "B" Gas Unit #12 | 13,400 | 29331844 |
| 620741 | Jun 15, 2006 | Jun 15, 2006 | XTO Energy Inc. | Gilliam "B" No. 1 Gas Unit #19 | 13,200 | 29331843 |
| 620793 | Jun 13, 2006 | Jun 13, 2006 | St. Mary Land & Exploration Co. | White #10 | 9,400 | 29331278 |
| 620793Amendment | Jun 13, 2006 | Jun 13, 2006 | St. Mary Land & Exploration Co. | White #10 | 9,400 | 29331278 |
| 620793Amendment | Jun 13, 2006 | Jun 13, 2006 | St. Mary Land & Exploration Co. | White #10 | 9,450 | 29331278 |
| 620813 | Jun 12, 2006 | Jun 12, 2006 | Geo Logic Environmental Srvcs LC | Waters #1 | 4,000 | 29331842 |
| 620646 | Jun 9, 2006 | Jun 9, 2006 | Valence Operating Company | Wedgman #2 | 12,000 | 29331841 |
| 620502 | Jun 8, 2006 | Jun 8, 2006 | Devon Energy Production Co, L.P. | E L Smythe #12HH | 12,000 | 29331840 |
| 620502Amendment | Jun 8, 2006 | Jun 8, 2006 | Devon Energy Production Co, L.P. | E L Smythe #12HH | 12,000 | 29331840 |
| 620502Amendment | Jun 8, 2006 | Jun 8, 2006 | Devon Energy Production Co, L.P. | Smythe, E. L. #12HH | 12,000 | 29331840 |
| 620522 | Jun 6, 2006 | Jun 6, 2006 | XTO Energy Inc. | Hudson "B" Gas Unit #15 | 13,500 | 29332149 |
| 619883 | Jun 2, 2006 | Jun 2, 2006 | XTO Energy Inc. | Reed "R" No. 1 Unit #7 | 13,500 | 29331627 |
| 619722 | May 23, 2006 | May 23, 2006 | Spence Energy Company | Kennedy, Carolyn Kay #4 | 3,000 | 29331837 |
| 619640 | May 22, 2006 | May 22, 2006 | St. Mary Land & Exploration Co. | White #4 | 9,380 | 29331186 |
| 619640Amendment | May 22, 2006 | May 22, 2006 | St. Mary Land & Exploration Co. | White #4 | 9,380 | 29331186 |
| 619640Amendment | May 22, 2006 | May 22, 2006 | St. Mary Land & Exploration Co. | White #4 | 9,380 | 29331186 |
| 619007 | May 17, 2006 | May 17, 2006 | XTO Energy Inc. | C&W Gas Unit No. 1 #6HH | 17,000 | 29331836 |
| 618536 | May 11, 2006 | May 11, 2006 | Stroud Petroleum, Inc. | McClaran #1 | 11,050 | 29331183 |
| 618427 | May 10, 2006 | May 10, 2006 | XTO Energy Inc. | Pat Oakes Gas Unit II #1 | 15,200 | 29331835 |
| 618427Amendment | May 10, 2006 | May 10, 2006 | XTO Energy Inc. | Pat Oakes Gas Unit II #1 | 15,200 | 29331835 |
| 618319 | May 4, 2006 | May 4, 2006 | Comstock Oil & Gas, LP | Jackson #5 | 8,600 | 29331313 |
| 618255 | May 4, 2006 | May 4, 2006 | XTO Energy Inc. | Tumlinson "a" #1 Gas Unit #10 | 14,500 | 29331831 |
| 618251 | May 4, 2006 | May 4, 2006 | XTO Energy Inc. | Tumlinson 'a' #1 Gas Unit #9 | 14,500 | 29332374 |
| 618250 | May 4, 2006 | May 4, 2006 | XTO Energy Inc. | Gross, Richard H. et Al #19 | 13,600 | 29331833 |
| 618249 | May 4, 2006 | May 4, 2006 | XTO Energy Inc. | S. J. Harlow Gas Unit #16 | 13,200 | 29331830 |
| 618248 | May 4, 2006 | May 4, 2006 | XTO Energy Inc. | Tumlinson "a" #1 Gas Unit #11 | 14,500 | 29331834 |
| 618123 | May 4, 2006 | May 4, 2006 | XTO Energy Inc. | Kennedy "A" #8 | 13,300 | 29331829 |
| 618115 | May 4, 2006 | May 4, 2006 | XTO Energy Inc. | Tumlinson 'a' #1 Gas Unit #8 | 14,500 | 29332372 |
| 617858 | Apr 27, 2006 | Apr 27, 2006 | XTO Energy Inc. | Heaton No. 1 Gas Unit #20 | 13,200 | 29331826 |
| 617779 | Apr 26, 2006 | Apr 26, 2006 | XTO Energy Inc. | Sims, Robert #2 | 13,500 | 29331825 |
| 617777 | Apr 26, 2006 | Apr 26, 2006 | XTO Energy Inc. | Sims, Robert #3 | 13,500 | 29331824 |
| 617776 | Apr 26, 2006 | Apr 26, 2006 | XTO Energy Inc. | Reed "P" Gas Unit No. 1 #18 | 13,500 | 29331823 |
| 617672 | Apr 24, 2006 | Apr 24, 2006 | XTO Energy Inc. | Robert Shaw Gas Unit No. 1 #6 | 14,500 | 29331822 |
| 617668 | Apr 24, 2006 | Apr 24, 2006 | XTO Energy Inc. | Tumlinson "a" #1 Gas Unit #6 | 14,500 | 29331821 |
| 617634 | Apr 21, 2006 | Apr 21, 2006 | XTO Energy Inc. | Heaton No. 1 Gas Unit #1 | 12,753 | 29330487 |
| 617634Amendment | Apr 21, 2006 | Apr 21, 2006 | XTO Energy Inc. | Heaton No. 1 Gas Unit #1 | 12,753 | 29330487 |
| 617426 | Apr 18, 2006 | Apr 18, 2006 | XTO Energy Inc. | Morton No. 1 Gas Unit #22 | 13,200 | 29331820 |
| 617419 | Apr 18, 2006 | Apr 18, 2006 | XTO Energy Inc. | Reed "R" No. 1 Unit #9 | 13,500 | 29331668 |
| 617342 | Apr 17, 2006 | Apr 17, 2006 | XTO Energy Inc. | Morton NO.1 Gas Unit #21 | 13,200 | 29331819 |
| 617201 | Apr 14, 2006 | Apr 14, 2006 | XTO Energy Inc. | Morton No. 1 Gas Unit #20 | 13,200 | 29331818 |
| 617201Amendment | Apr 14, 2006 | Apr 14, 2006 | XTO Energy Inc. | Morton No. 1 Gas Unit #20 | 13,200 | 29331818 |
| 617171 | Apr 12, 2006 | Apr 12, 2006 | XTO Energy Inc. | Loftin Creek Gas Unit #2 | 13,800 | 29331817 |
| 617162 | Apr 11, 2006 | Apr 11, 2006 | XTO Energy Inc. | Crider Gas Unit #3 | 13,200 | 29331816 |
| 617031 | Apr 11, 2006 | Apr 11, 2006 | XTO Energy Inc. | Loftin Creek Gas Unit #1 | 13,800 | 29331814 |
| 616081 | Apr 5, 2006 | Apr 5, 2006 | Samson Lone Star LP | Douglas #4 | 11,350 | 29331813 |
| 616081Amendment | Apr 5, 2006 | Apr 5, 2006 | Samson Lone Star LP | Douglas #4 | 11,350 | 29331813 |
| 616648 | Apr 4, 2006 | Apr 4, 2006 | XTO Energy Inc. | Heaton No. 1 Gas Unit #19 | 13,200 | 29331812 |
| 616646 | Apr 4, 2006 | Apr 4, 2006 | XTO Energy Inc. | S. J. Harlow Gas Unit #8 | 13,300 | 29331811 |
| 616784 | Mar 31, 2006 | Mar 31, 2006 | Brown Oil & Gas Co. | Rogers, L. W. #G 1 | 6,300 | 29331810 |
| 616292 | Mar 30, 2006 | Mar 30, 2006 | XTO Energy Inc. | Reed "R" No. 1 Unit #5 | 13,300 | 29331624 |
| 616289 | Mar 30, 2006 | Mar 30, 2006 | XTO Energy Inc. | Goldbeck Gas Unit #2 | 14,200 | 29331808 |
| 616284 | Mar 30, 2006 | Mar 30, 2006 | XTO Energy Inc. | J. A. Gilliam Gas Unit #16 | 13,100 | 16134160 |
| 616290 | Mar 29, 2006 | Mar 29, 2006 | XTO Energy Inc. | Sand Branch Gas Unit #2 | 14,200 | 29331809 |
| 616122 | Mar 28, 2006 | Mar 28, 2006 | XTO Energy Inc. | Sand Branch Gas Unit #1 | 14,200 | 29331806 |
| 616120 | Mar 28, 2006 | Mar 28, 2006 | XTO Energy Inc. | Goldbeck Gas Unit #1 | 14,200 | 29331805 |
| 616035 | Mar 28, 2006 | Mar 28, 2006 | XTO Energy Inc. | Reed "R" No. 1 Unit #18 | 13,600 | 29331803 |
| 615918 | Mar 23, 2006 | Mar 23, 2006 | Samson Lone Star LP | Carlton Gas Unit #4 | 12,000 | 29331804 |
| 615918Amendment | Mar 23, 2006 | Mar 23, 2006 | Samson Lone Star LP | Carlton Gas Unit #4 | 12,000 | 29331804 |