| 639616 | Jun 1, 2007 | Jun 1, 2007 | Chesapeake Operating, Inc. | Shaw #1HH | 12,000 | 25131869 |
| 639648 | May 31, 2007 | May 31, 2007 | EOG Resources, Inc. | U.S. Lime #15HH | 7,800 | 25131871 |
| 639648Amendment | May 31, 2007 | May 31, 2007 | EOG Resources, Inc. | U.S. Lime Unit D #15HH | 10,000 | 25131871 |
| 639558 | May 31, 2007 | May 31, 2007 | Chesapeake Operating, Inc. | Sawiki #4HH | 12,000 | 25131866 |
| 639557 | May 31, 2007 | May 31, 2007 | Chesapeake Operating, Inc. | Sawiki #3HH | 12,000 | 25131865 |
| 639556 | May 31, 2007 | May 31, 2007 | Chesapeake Operating, Inc. | Sawiki #2HH | 12,000 | 25131864 |
| 635804 | May 31, 2007 | May 31, 2007 | EOG Resources, Inc. | Stewart Unit #2HH | 8,000 | 25131639 |
| 639595 | May 30, 2007 | May 30, 2007 | Devon Energy Production Co, L.P. | Hallman, William #1H | 9,000 | 25131868 |
| 639569 | May 30, 2007 | May 30, 2007 | EOG Resources, Inc. | Hays Unit #3HH | 7,800 | 25131867 |
| 639554 | May 30, 2007 | May 30, 2007 | Chesapeake Operating, Inc. | Sawiki #1HH | 12,000 | 25131863 |
| 639431 | May 30, 2007 | May 30, 2007 | EOG Resources, Inc. | Zora Mae #1HH | 7,800 | 25131853 |
| 637709 | May 30, 2007 | May 30, 2007 | EOG Resources, Inc. | Stevenson "a" Unit #4HH | 7,800 | 25131827 |
| 637709Amendment | May 30, 2007 | May 30, 2007 | EOG Resources, Inc. | Stevenson "a" Unit #4HH | 10,000 | 25131827 |
| 637391 | May 30, 2007 | May 30, 2007 | EOG Resources, Inc. | Wilson Unit #7HH | 8,300 | 25131720 |
| 639547 | May 29, 2007 | May 29, 2007 | XTO Energy Inc. | Poynor Unit #B 3HH | 11,500 | 25131862 |
| 639547Amendment | May 29, 2007 | May 29, 2007 | XTO Energy Inc. | Poynor Unit #B 3HH | 11,500 | 25131862 |
| 639545 | May 29, 2007 | May 29, 2007 | XTO Energy Inc. | Poynor Unit #B 2HH | 11,500 | 25131861 |
| 639545Amendment | May 29, 2007 | May 29, 2007 | XTO Energy Inc. | Poynor Unit #B 2HH | 11,500 | 25131861 |
| 639545Amendment | May 29, 2007 | May 29, 2007 | XTO Energy Inc. | Poynor Unit #B 2HH | 11,500 | 25131861 |
| 639501 | May 29, 2007 | May 29, 2007 | Devon Energy Production Co, L.P. | T. Clifford GU #1HH | 9,000 | 25131860 |
| 639169 | May 29, 2007 | May 29, 2007 | XTO Energy Inc. | Lewis Unit #A 3HH | 12,000 | 25131835 |
| 639485 | May 25, 2007 | May 25, 2007 | Chesapeake Operating, Inc. | Mize Family #41HH | 10,500 | 25131859 |
| 639483 | May 25, 2007 | May 25, 2007 | Chesapeake Operating, Inc. | Mize Family #20HH | 10,500 | 25131858 |
| 639459 | May 25, 2007 | May 25, 2007 | EOG Resources, Inc. | King #25HH | 7,500 | 25131857 |
| 639459Amendment | May 25, 2007 | May 25, 2007 | EOG Resources, Inc. | King #25HH | 10,000 | 25131857 |
| 639458 | May 25, 2007 | May 25, 2007 | EOG Resources, Inc. | King #24HH | 7,500 | 25131856 |
| 639458Amendment | May 25, 2007 | May 25, 2007 | EOG Resources, Inc. | King #24HH | 10,000 | 25131856 |
| 639456 | May 25, 2007 | May 25, 2007 | EOG Resources, Inc. | King #22HH | 7,500 | 25131855 |
| 639456Amendment | May 25, 2007 | May 25, 2007 | EOG Resources, Inc. | King #22HH | 10,000 | 25131855 |
| 639443 | May 25, 2007 | May 25, 2007 | EOG Resources, Inc. | Zora Mae #2HH | 7,800 | 25131852 |
| 639437 | May 25, 2007 | May 25, 2007 | XTO Energy Inc. | Morris Foust Unit #B 3HH | 12,000 | 25131851 |
| 639437Amendment | May 25, 2007 | May 25, 2007 | XTO Energy Inc. | Morris Foust Unit #B 3HH | 12,000 | 25131851 |
| 639433 | May 25, 2007 | May 25, 2007 | XTO Energy Inc. | Morris Foust Unit #B 1HH | 12,000 | 25131854 |
| 639433Amendment | May 25, 2007 | May 25, 2007 | XTO Energy Inc. | Morris Foust Unit #B 1HH | 12,000 | 25131854 |
| 639374 | May 25, 2007 | May 25, 2007 | XTO Energy Inc. | Lewis Unit #A 2HH | 12,000 | 25131848 |
| 639374Amendment | May 25, 2007 | May 25, 2007 | XTO Energy Inc. | Lewis Unit #A 2HH | 11,000 | 25131848 |
| 639374Amendment | May 25, 2007 | May 25, 2007 | XTO Energy Inc. | Lewis Unit #A 2HH | 11,000 | 25131848 |
| 639300 | May 25, 2007 | May 25, 2007 | EOG Resources, Inc. | Milford Investments Unit #1HH | 7,800 | 25131844 |
| 639288 | May 25, 2007 | May 25, 2007 | Chesapeake Operating, Inc. | Johns Manville #6HH | 10,500 | 25131843 |
| 639165 | May 25, 2007 | May 25, 2007 | EOG Resources, Inc. | KTV Caddo Unit #3HH | 7,800 | 25131834 |
| 639376 | May 24, 2007 | May 24, 2007 | Devon Energy Production Co, L.P. | Guthrie, Thomas #9HH | 9,000 | 25131849 |
| 639363 | May 24, 2007 | May 24, 2007 | XTO Energy Inc. | Owen #5HH | 12,000 | 25131847 |
| 639363Amendment | May 24, 2007 | May 24, 2007 | XTO Energy Inc. | Owen #5HH | 12,000 | 25131847 |
| 639349 | May 24, 2007 | May 24, 2007 | EOG Resources, Inc. | King #21HH | 7,500 | 25131846 |
| 639349Amendment | May 24, 2007 | May 24, 2007 | EOG Resources, Inc. | King #21HH | 10,000 | 25131846 |
| 639347 | May 24, 2007 | May 24, 2007 | EOG Resources, Inc. | King #20HH | 7,500 | 25131845 |
| 639347Amendment | May 24, 2007 | May 24, 2007 | EOG Resources, Inc. | King #20HH | 10,000 | 25131845 |
| 639120 | May 24, 2007 | May 24, 2007 | Devon Energy Production Co, L.P. | Dean "B" #1HH | 9,000 | 25131828 |
| 639120Amendment | May 24, 2007 | May 24, 2007 | Devon Energy Production Co, L.P. | Dean "B" #1HH | 9,000 | 25131828 |
| 638981 | May 24, 2007 | May 24, 2007 | EOG Resources, Inc. | King #17HH | 7,500 | 25131850 |
| 638981Amendment | May 24, 2007 | May 24, 2007 | EOG Resources, Inc. | King #17HH | 10,000 | 25131850 |
| 638906 | May 23, 2007 | May 23, 2007 | Chesapeake Operating, Inc. | Childress #3HH | 9,000 | 25131821 |
| 638824 | May 23, 2007 | May 23, 2007 | Chesapeake Operating, Inc. | Becky #3HH | 9,000 | 25131814 |
| 638824Amendment | May 23, 2007 | May 23, 2007 | Chesapeake Operating, Inc. | Becky #3HH | 9,000 | 25131814 |
| 637334 | May 23, 2007 | May 23, 2007 | EOG Resources, Inc. | Wilson Unit #6HH | 8,800 | 25131717 |
| 637331 | May 23, 2007 | May 23, 2007 | EOG Resources, Inc. | Wilson Unit #5HH | 8,400 | 25131716 |
| 639238 | May 22, 2007 | May 22, 2007 | Devon Energy Production Co, L.P. | Rive Enterprises #2HH | 9,000 | 25131842 |
| 639227 | May 22, 2007 | May 22, 2007 | Devon Energy Production Co, L.P. | Pitts, Charles #2HH | 9,000 | 25131841 |
| 639227Amendment | May 22, 2007 | May 22, 2007 | Devon Energy Production Co, L.P. | Pitts, Charles #2HH | 9,000 | 25131841 |
| 639209 | May 22, 2007 | May 22, 2007 | Chesapeake Operating, Inc. | Terry #2HH | 10,500 | 25131840 |
| 639209Amendment | May 22, 2007 | May 22, 2007 | Chesapeake Operating, Inc. | Terry #2HH | 10,500 | 25131840 |
| 639183 | May 22, 2007 | May 22, 2007 | EOG Resources, Inc. | Osburn Unit #2HH | 7,800 | 25131837 |
| 639176 | May 22, 2007 | May 22, 2007 | EOG Resources, Inc. | Osburn Unit #1HH | 7,800 | 25131836 |
| 639174 | May 22, 2007 | May 22, 2007 | Devon Energy Production Co, L.P. | Mannings 4M Farms #2HH | 9,000 | 25131839 |
| 638831 | May 22, 2007 | May 22, 2007 | Chesapeake Operating, Inc. | McAnier #6HH | 9,000 | 25131812 |
| 638831Amendment | May 22, 2007 | May 22, 2007 | Chesapeake Operating, Inc. | McAnier #6HH | 9,000 | 25131812 |
| 638823 | May 22, 2007 | May 22, 2007 | Chesapeake Operating, Inc. | Becky #2HH | 9,000 | 25131810 |
| 638821 | May 22, 2007 | May 22, 2007 | Chesapeake Operating, Inc. | Becky #1HH | 9,000 | 25131809 |
| 638821Amendment | May 22, 2007 | May 22, 2007 | Chesapeake Operating, Inc. | Becky #1HH | 9,000 | 25131809 |
| 639146 | May 21, 2007 | May 21, 2007 | EOG Resources, Inc. | Hilton Unit #5HH | 8,500 | 25131832 |
| 639126 | May 21, 2007 | May 21, 2007 | Devon Energy Production Co, L.P. | Manning - West #1HH | 9,000 | 25131831 |
| 639125 | May 21, 2007 | May 21, 2007 | EOG Resources, Inc. | Hilton Unit #4HH | 8,500 | 25131830 |
| 638387 | May 21, 2007 | May 21, 2007 | EOG Resources, Inc. | Fricks #8HH | 7,800 | 25131829 |
| 638387Amendment | May 21, 2007 | May 21, 2007 | EOG Resources, Inc. | Fricks #8HH | 10,000 | 25131829 |
| 637652 | May 21, 2007 | May 21, 2007 | XTO Energy Inc. | Kari #1HH | 12,000 | 25131739 |
| 637652Amendment | May 21, 2007 | May 21, 2007 | XTO Energy Inc. | Kari #1HH | 12,000 | 25131739 |
| 639076 | May 19, 2007 | May 19, 2007 | Devon Energy Production Co, L.P. | Crow, Betty #1H | 9,000 | 25131826 |
| 639043 | May 19, 2007 | May 19, 2007 | EOG Resources, Inc. | King #19HH | 7,500 | 25131825 |
| 639043Amendment | May 19, 2007 | May 19, 2007 | EOG Resources, Inc. | King #19HH | 10,000 | 25131825 |
| 639041 | May 19, 2007 | May 19, 2007 | EOG Resources, Inc. | King #18HH | 7,500 | 25131824 |
| 639041Amendment | May 19, 2007 | May 19, 2007 | EOG Resources, Inc. | King #18HH | 10,000 | 25131824 |
| 639032 | May 19, 2007 | May 19, 2007 | EOG Resources, Inc. | Meeks Unit #4HH | 8,000 | 25131823 |
| 639028 | May 19, 2007 | May 19, 2007 | Range Production Company | Montanaro #1HH | 8,700 | 25131822 |
| 638905 | May 19, 2007 | May 19, 2007 | XTO Energy Inc. | Owen #7HH | 12,000 | 25131820 |
| 638905Amendment | May 19, 2007 | May 19, 2007 | XTO Energy Inc. | Owen #7HH | 12,000 | 25131820 |
| 638905Amendment | May 19, 2007 | May 19, 2007 | XTO Energy Inc. | Owen #7HH | 12,000 | 25131820 |
| 638903 | May 19, 2007 | May 19, 2007 | XTO Energy Inc. | Morris Foust Unit #6HH | 11,000 | 25131818 |
| 638897 | May 19, 2007 | May 19, 2007 | XTO Energy Inc. | Morris Foust Unit #4HH | 11,000 | 25131817 |
| 638843 | May 18, 2007 | May 18, 2007 | EOG Resources, Inc. | King #16HH | 7,500 | 25131813 |
| 638843Amendment | May 18, 2007 | May 18, 2007 | EOG Resources, Inc. | King #16HH | 10,000 | 25131813 |
| 638838 | May 18, 2007 | May 18, 2007 | EOG Resources, Inc. | King #15HH | 7,500 | 25131816 |
| 638838Amendment | May 18, 2007 | May 18, 2007 | EOG Resources, Inc. | King #15HH | 10,000 | 25131816 |
| 638837 | May 18, 2007 | May 18, 2007 | EOG Resources, Inc. | King #14HH | 7,500 | 25131815 |
| 638837Amendment | May 18, 2007 | May 18, 2007 | EOG Resources, Inc. | King #14HH | 10,000 | 25131815 |
| 638832 | May 18, 2007 | May 18, 2007 | Chesapeake Operating, Inc. | McAnier #12HH | 9,000 | 25131811 |
| 638622 | May 18, 2007 | May 18, 2007 | Chesapeake Operating, Inc. | Falvel #11HH | 9,000 | 25131795 |
| 638619 | May 18, 2007 | May 18, 2007 | Chesapeake Operating, Inc. | Falvel #10HH | 9,000 | 25131796 |
| 638775 | May 17, 2007 | May 17, 2007 | EOG Resources, Inc. | King #11HH | 7,500 | 25131808 |
| 638775Amendment | May 17, 2007 | May 17, 2007 | EOG Resources, Inc. | King #11HH | 10,000 | 25131808 |
| 638771 | May 17, 2007 | May 17, 2007 | EOG Resources, Inc. | Mildred #2HH | 7,800 | 25131806 |