| 691093Amendment | Feb 10, 2010 | Feb 10, 2010 | XTO Energy Inc. | Wilkinson Unit #3HH | 11,500 | 25133902 |
| 691086 | Feb 10, 2010 | Feb 10, 2010 | XTO Energy Inc. | Hatcher Unit #3HH | 10,000 | 25133901 |
| 691086Amendment | Feb 10, 2010 | Feb 10, 2010 | XTO Energy Inc. | Hatcher Unit #3HH | 11,000 | 25133901 |
| 691055 | Feb 10, 2010 | Feb 10, 2010 | XTO Energy Inc. | Hatcher Unit #2HH | 10,000 | 25133900 |
| 691055Amendment | Feb 10, 2010 | Feb 10, 2010 | XTO Energy Inc. | Hatcher Unit #2HH | 10,500 | 25133900 |
| 691038 | Feb 10, 2010 | Feb 10, 2010 | EOG Resources, Inc. | Fowler Unit #7HH | 8,900 | 25133899 |
| 690677 | Feb 9, 2010 | Feb 9, 2010 | Devon Energy Production Co, L.P. | Scott #3HH | 9,000 | 25133898 |
| 690660 | Feb 9, 2010 | Feb 9, 2010 | Devon Energy Production Co, L.P. | Scott #2HH | 9,000 | 25133897 |
| 690886 | Feb 8, 2010 | Feb 8, 2010 | Titan Operating, LLC | Scott McDonald Unit #1HH | 8,500 | 25133894 |
| 690886Amendment | Feb 8, 2010 | Feb 8, 2010 | Titan Operating, LLC | Sloan #1HH | 8,500 | 25133894 |
| 690853 | Feb 8, 2010 | Feb 8, 2010 | XTO Energy Inc. | Warren Unit #8HH | 10,000 | 25133893 |
| 690853Amendment | Feb 8, 2010 | Feb 8, 2010 | XTO Energy Inc. | Warren Unit #8HH | 10,000 | 25133893 |
| 690845 | Feb 8, 2010 | Feb 8, 2010 | XTO Energy Inc. | Warren Unit #7HH | 10,000 | 25133892 |
| 690845Amendment | Feb 8, 2010 | Feb 8, 2010 | XTO Energy Inc. | Warren Unit #7HH | 10,000 | 25133892 |
| 690062 | Jan 29, 2010 | Jan 29, 2010 | EOG Resources, Inc. | Spring Valley Unit #4HH | 8,900 | 25133888 |
| 690060 | Jan 29, 2010 | Jan 29, 2010 | EOG Resources, Inc. | Spring Valley Unit #3HH | 8,900 | 25133889 |
| 690054 | Jan 29, 2010 | Jan 29, 2010 | EOG Resources, Inc. | Ford Unit #7HH | 7,800 | 25133883 |
| 690051 | Jan 29, 2010 | Jan 29, 2010 | EOG Resources, Inc. | Ford Unit #6HH | 7,800 | 25133882 |
| 690050 | Jan 29, 2010 | Jan 29, 2010 | EOG Resources, Inc. | Ford Unit #5HH | 7,800 | 25133881 |
| 690323 | Jan 27, 2010 | Jan 27, 2010 | Chesapeake Operating, Inc. | Charles Barker #7HH | 9,000 | 25133885 |
| 690320 | Jan 27, 2010 | Jan 27, 2010 | Chesapeake Operating, Inc. | Esparza #3HH | 9,000 | 25133884 |
| 690292 | Jan 27, 2010 | Jan 27, 2010 | Chesapeake Operating, Inc. | Manning #5HH | 9,000 | 25133880 |
| 690234 | Jan 27, 2010 | Jan 27, 2010 | Chesapeake Operating, Inc. | Hadley #5HH | 9,000 | 25133877 |
| 690233 | Jan 27, 2010 | Jan 27, 2010 | Chesapeake Operating, Inc. | Hadley #4HH | 9,000 | 25133876 |
| 690195 | Jan 27, 2010 | Jan 27, 2010 | Chesapeake Operating, Inc. | Pennington #4HH | 9,000 | 25133873 |
| 687880 | Jan 27, 2010 | Jan 27, 2010 | Chesapeake Operating, Inc. | Blair #3HH | 9,000 | 25133815 |
| 687880Amendment | Jan 27, 2010 | Jan 27, 2010 | Chesapeake Operating, Inc. | Blair #3HH | 9,000 | 25133815 |
| 687880Amendment | Jan 27, 2010 | Jan 27, 2010 | Chesapeake Operating, Inc. | Blair #3HH | 9,000 | 25133815 |
| 690238 | Jan 26, 2010 | Jan 26, 2010 | Chesapeake Operating, Inc. | I G Kennon #5HH | 9,000 | 25133878 |
| 690214 | Jan 26, 2010 | Jan 26, 2010 | Chesapeake Operating, Inc. | Mize Family #35HH | 9,000 | 25133875 |
| 690213 | Jan 26, 2010 | Jan 26, 2010 | Chesapeake Operating, Inc. | Mize Family #18HH | 9,000 | 25133874 |
| 690011 | Jan 22, 2010 | Jan 22, 2010 | EOG Resources, Inc. | Spring Valley Unit #2HH | 8,900 | 25133871 |
| 689979 | Jan 21, 2010 | Jan 21, 2010 | Chesapeake Operating, Inc. | North Fork #2HH | 9,000 | 25133870 |
| 689953 | Jan 21, 2010 | Jan 21, 2010 | Chesapeake Operating, Inc. | Cullison #5HH | 9,000 | 25133869 |
| 689900 | Jan 21, 2010 | Jan 21, 2010 | XTO Energy Inc. | Peggy Unit #B 3HH | 10,000 | 25133867 |
| 689900Amendment | Jan 21, 2010 | Jan 21, 2010 | XTO Energy Inc. | Peggy Unit #B 3HH | 10,000 | 25133867 |
| 689781 | Jan 21, 2010 | Jan 21, 2010 | EOG Resources, Inc. | Texas Royalties Unit #3HH | 8,999 | 25133865 |
| 689781Amendment | Jan 21, 2010 | Jan 21, 2010 | EOG Resources, Inc. | Texas Royalties Psa #3HH | 8,999 | 25133865 |
| 689748 | Jan 20, 2010 | Jan 20, 2010 | Titan Operating, LLC | Happy Hills Unit #1HH | 8,500 | 25133868 |
| 689782 | Jan 19, 2010 | Jan 19, 2010 | Chesapeake Operating, Inc. | Cates #6HH | 9,000 | 25133866 |
| 689509 | Jan 14, 2010 | Jan 14, 2010 | EOG Resources, Inc. | Ford Unit #3HH | 7,800 | 25133864 |
| 689507 | Jan 14, 2010 | Jan 14, 2010 | EOG Resources, Inc. | Ford Unit #2HH | 7,800 | 25133863 |
| 689494 | Jan 14, 2010 | Jan 14, 2010 | Devon Energy Production Co, L.P. | Hand, Mairead #7HH | 9,000 | 25133862 |
| 689494Amendment | Jan 14, 2010 | Jan 14, 2010 | Devon Energy Production Co, L.P. | Hand, Mairead #7HH | 9,000 | 25133862 |
| 689492 | Jan 14, 2010 | Jan 14, 2010 | Devon Energy Production Co, L.P. | Hand, Mairead #6HH | 9,000 | 25133861 |
| 689492Amendment | Jan 14, 2010 | Jan 14, 2010 | Devon Energy Production Co, L.P. | Hand, Mairead #6HH | 9,000 | 25133861 |
| 689488 | Jan 14, 2010 | Jan 14, 2010 | Devon Energy Production Co, L.P. | Hand, Mairead #4HH | 9,000 | 25133860 |
| 689487 | Jan 14, 2010 | Jan 14, 2010 | Devon Energy Production Co, L.P. | Hand, Mairead #3HH | 9,000 | 25133859 |
| 689603 | Jan 13, 2010 | Jan 13, 2010 | Williams Prod. Gulf Coast, L.P. | Goldsmith #2HH | 7,920 | 25133857 |
| 689603Amendment | Jan 13, 2010 | Jan 13, 2010 | Williams Prod. Gulf Coast, L.P. | Goldsmith #2HH | 8,500 | 25133857 |
| 689602 | Jan 13, 2010 | Jan 13, 2010 | Williams Prod. Gulf Coast, L.P. | Goldsmith #1HH | 7,920 | 25133856 |
| 689602Amendment | Jan 13, 2010 | Jan 13, 2010 | Williams Prod. Gulf Coast, L.P. | Goldsmith #1HH | 8,500 | 25133856 |
| 689485 | Jan 13, 2010 | Jan 13, 2010 | Devon Energy Production Co, L.P. | Hand, Mairead #2HH | 9,000 | 25133858 |
| 688931 | Jan 13, 2010 | Jan 13, 2010 | Chesapeake Operating, Inc. | Page #4HH | 9,000 | 25133844 |
| 689490 | Jan 11, 2010 | Jan 11, 2010 | Devon Energy Production Co, L.P. | Hand, Mairead #5HH | 9,000 | 25133855 |
| 684288 | Jan 11, 2010 | Jan 11, 2010 | Chesapeake Operating, Inc. | Raintree #5HH | 9,000 | 25133758 |
| 689404 | Jan 7, 2010 | Jan 7, 2010 | Chesapeake Operating, Inc. | Forest Lane #2HH | 9,000 | 25133853 |
| 689391 | Jan 7, 2010 | Jan 7, 2010 | Chesapeake Operating, Inc. | East Allen #2HH | 9,000 | 25133854 |
| 689379 | Jan 7, 2010 | Jan 7, 2010 | Chesapeake Operating, Inc. | Welliver #7HH | 9,000 | 25133852 |
| 689379Amendment | Jan 7, 2010 | Jan 7, 2010 | Chesapeake Operating, Inc. | Welliver #7HH | 9,000 | 25133852 |
| 689378 | Jan 7, 2010 | Jan 7, 2010 | Chesapeake Operating, Inc. | Welliver #4HH | 9,000 | 25133851 |
| 689284 | Jan 5, 2010 | Jan 5, 2010 | Chesapeake Operating, Inc. | Cullison #4HH | 9,000 | 25133850 |
| 689275 | Jan 5, 2010 | Jan 5, 2010 | Chesapeake Operating, Inc. | Webb #4HH | 9,000 | 25133849 |
| 689274 | Jan 5, 2010 | Jan 5, 2010 | Chesapeake Operating, Inc. | Webb #3HH | 9,000 | 25133848 |
| 689207 | Dec 31, 2009 | Dec 31, 2009 | Chesapeake Operating, Inc. | Huskey #1HH | 9,000 | 25133847 |
| 689121 | Dec 30, 2009 | Dec 30, 2009 | EOG Resources, Inc. | Ford Unit #4HH | 7,800 | 25133845 |
| 688002 | Dec 30, 2009 | Dec 30, 2009 | Devon Energy Production Co, L.P. | Aldridge, Billy Bob #2HH | 9,000 | 25133826 |
| 688490 | Dec 15, 2009 | Dec 15, 2009 | EOG Resources, Inc. | Lake Alvarado Unit #8HH | 8,900 | 25133837 |
| 688490Amendment | Dec 15, 2009 | Dec 15, 2009 | EOG Resources, Inc. | Lake Alvarado Unit #8HH | 8,900 | 25133837 |
| 686430 | Dec 15, 2009 | Dec 15, 2009 | EOG Resources, Inc. | Trulove Unit #10 HH | 8,900 | 25133792 |
| 686428 | Dec 15, 2009 | Dec 15, 2009 | EOG Resources, Inc. | Trulove Unit #9 HH | 8,900 | 25133791 |
| 686425 | Dec 15, 2009 | Dec 15, 2009 | EOG Resources, Inc. | Trulove Unit #8 HH | 8,900 | 25133790 |
| 686424 | Dec 15, 2009 | Dec 15, 2009 | EOG Resources, Inc. | Trulove Unit #7 HH | 8,900 | 25133795 |
| 686423 | Dec 15, 2009 | Dec 15, 2009 | EOG Resources, Inc. | Trulove Unit #6 HH | 8,900 | 25133789 |
| 688581 | Dec 14, 2009 | Dec 14, 2009 | Chesapeake Operating, Inc. | Mayfield 361 #7HH | 9,000 | 25133843 |
| 688581Amendment | Dec 14, 2009 | Dec 14, 2009 | Chesapeake Operating, Inc. | Mayfield 361 #7HH | 9,000 | 25133843 |
| 688580 | Dec 14, 2009 | Dec 14, 2009 | Chesapeake Operating, Inc. | Mayfield 361 #6HH | 9,000 | 25133842 |
| 688469 | Dec 11, 2009 | Dec 11, 2009 | EOG Resources, Inc. | Ledezma Unit #6HH | 8,900 | 25133836 |
| 688465 | Dec 11, 2009 | Dec 11, 2009 | EOG Resources, Inc. | Ledezma Unit #5HH | 8,900 | 25133835 |
| 688443 | Dec 11, 2009 | Dec 11, 2009 | EOG Resources, Inc. | Tolbert Unit #11 | 8,900 | 25133834 |
| 688338 | Dec 11, 2009 | Dec 11, 2009 | XTO Energy Inc. | Cleburne State Park #9HH | 10,000 | 25133839 |
| 688302 | Dec 11, 2009 | Dec 11, 2009 | Chesapeake Operating, Inc. | Page #2HH | 9,000 | 25133838 |
| 688420 | Dec 10, 2009 | Dec 10, 2009 | Chesapeake Operating, Inc. | Wakeman #3HH | 9,000 | 25133833 |
| 688420Amendment | Dec 10, 2009 | Dec 10, 2009 | Chesapeake Operating, Inc. | Wakeman #3HH | 9,000 | 25133833 |
| 688416 | Dec 10, 2009 | Dec 10, 2009 | Chesapeake Operating, Inc. | Falvel #17HH | 9,000 | 25133832 |
| 688406 | Dec 10, 2009 | Dec 10, 2009 | EOG Resources, Inc. | Tolbert Unit #12 | 8,900 | 25133831 |
| 688406Amendment | Dec 10, 2009 | Dec 10, 2009 | EOG Resources, Inc. | Tolbert Unit #12HH | 8,900 | 25133831 |
| 688325 | Dec 10, 2009 | Dec 10, 2009 | Chesapeake Operating, Inc. | Page #5HH | 9,000 | 25133830 |
| 688303 | Dec 8, 2009 | Dec 8, 2009 | Chesapeake Operating, Inc. | Rodeo Grounds #2HH | 9,000 | 25133829 |
| 688303Amendment | Dec 8, 2009 | Dec 8, 2009 | Chesapeake Operating, Inc. | Rodeo Grounds #2HH | 9,000 | 25133829 |
| 688303Amendment | Dec 8, 2009 | Dec 8, 2009 | Chesapeake Operating, Inc. | Rodeo Grounds #2HH | 9,000 | 25133829 |
| 688303Amendment | Dec 8, 2009 | Dec 8, 2009 | Chesapeake Operating, Inc. | Rodeo Grounds #2HH | 9,000 | 25133829 |
| 686875 | Dec 8, 2009 | Dec 8, 2009 | Devon Energy Production Co, L.P. | Nowlin, Billie Marie #7HH | 9,000 | 25133806 |
| 688223 | Dec 7, 2009 | Dec 7, 2009 | Chesapeake Operating, Inc. | Little Hoss 7 #B 1HH | 9,000 | 25133828 |
| 688223Amendment | Dec 7, 2009 | Dec 7, 2009 | Chesapeake Operating, Inc. | Little Hoss 7 #B 1HH | 9,000 | 25133828 |
| 688178 | Dec 4, 2009 | Dec 4, 2009 | Chesapeake Operating, Inc. | Little Hoss #T 4HH | 9,000 | 25133827 |
| 688156 | Dec 4, 2009 | Dec 4, 2009 | Chesapeake Operating, Inc. | Airport #5HH | 9,000 | 25133824 |
| 688155 | Dec 4, 2009 | Dec 4, 2009 | Chesapeake Operating, Inc. | Airport #4HH | 9,000 | 25133823 |
| 686863 | Dec 4, 2009 | Dec 4, 2009 | Devon Energy Production Co, L.P. | Nowlin, Billie Marie #6HH | 9,000 | 25133805 |
| 688001 | Dec 3, 2009 | Dec 3, 2009 | Devon Energy Production Co, L.P. | Aldridge, Billy Bob #1HH | 9,000 | 25133825 |