| 726160 | Oct 14, 2011 | Oct 14, 2011 | Quicksilver Resources Inc. | Stingray Unit #1HH | 9,000 | 22131897 |
| 719781 | Sep 14, 2011 | Sep 14, 2011 | Quicksilver Resources Inc. | Dyer Unit #4HH | 9,000 | 22131888 |
| 719780 | Aug 9, 2011 | Aug 9, 2011 | Quicksilver Resources Inc. | Dyer Unit #3HH | 9,000 | 22131889 |
| 719778 | Aug 9, 2011 | Aug 9, 2011 | Quicksilver Resources Inc. | Dyer Unit #2HH | 9,000 | 22131887 |
| 720810 | Aug 1, 2011 | Aug 1, 2011 | Chesapeake Operating, Inc. | Little Hoss #V 5HH | 9,000 | 22131896 |
| 720120 | Jul 22, 2011 | Jul 22, 2011 | Aruba Petroleum, Inc. | Thomas Unit #6HH | 9,000 | 22131895 |
| 720287 | Jul 18, 2011 | Jul 18, 2011 | Devon Energy Production Co, L.P. | Christine's Lucky Draw #7HH | 9,000 | 22131894 |
| 720283 | Jul 18, 2011 | Jul 18, 2011 | Devon Energy Production Co, L.P. | Christine's Lucky Draw #6HH | 9,000 | 22131893 |
| 720212 | Jul 15, 2011 | Jul 15, 2011 | Devon Energy Production Co, L.P. | Christine's Lucky Draw #5HH | 9,000 | 22131892 |
| 720207 | Jul 15, 2011 | Jul 15, 2011 | Devon Energy Production Co, L.P. | Christine's Lucky Draw #4HH | 9,000 | 22131891 |
| 720204 | Jul 15, 2011 | Jul 15, 2011 | Devon Energy Production Co, L.P. | Christine's Lucky Draw #2HH | 9,000 | 22131890 |
| 718113 | Jun 14, 2011 | Jun 14, 2011 | Aruba Petroleum, Inc. | Thomas Unit #5HH | 9,000 | 22131886 |
| 716937 | May 25, 2011 | May 25, 2011 | Aruba Petroleum, Inc. | Thomas Unit #4HH | 9,000 | 22131885 |
| 716643 | May 19, 2011 | May 19, 2011 | Chesapeake Operating, Inc. | Little Hoss #V 6HH | 9,000 | 22131884 |
| 715448 | May 5, 2011 | May 5, 2011 | Quicksilver Resources Inc. | Briscoe West Unit #4HH | 9,000 | 22131883 |
| 715259 | May 3, 2011 | May 3, 2011 | XTO Energy Inc. | McGuffin Unit #B 2HH | 12,000 | 22131882 |
| 714798 | Apr 27, 2011 | Apr 27, 2011 | Quicksilver Resources Inc. | Briscoe West Unit #5HH | 9,000 | 22131881 |
| 714797 | Apr 27, 2011 | Apr 27, 2011 | Quicksilver Resources Inc. | Briscoe West Unit #2HH | 9,000 | 22131880 |
| 714538 | Apr 21, 2011 | Apr 21, 2011 | XTO Energy Inc. | Props Findley a Unit #5HH | 12,000 | 22131879 |
| 714538Amendment | Apr 21, 2011 | Apr 21, 2011 | XTO Energy Inc. | Props Findley a Unit #5HH | 12,000 | 22131879 |
| 712030 | Apr 19, 2011 | Apr 19, 2011 | Aruba Petroleum, Inc. | Thomas Unit #3HH | 9,000 | 22131878 |
| 713813 | Apr 13, 2011 | Apr 13, 2011 | Quicksilver Resources Inc. | La France Unit #4HH | 9,000 | 22131877 |
| 713813Amendment | Apr 13, 2011 | Apr 13, 2011 | Quicksilver Resources Inc. | La France Unit #4HH | 9,000 | 22131877 |
| 713807 | Apr 12, 2011 | Apr 12, 2011 | Quicksilver Resources Inc. | La France Unit #3HH | 9,000 | 22131876 |
| 713807Amendment | Apr 12, 2011 | Apr 12, 2011 | Quicksilver Resources Inc. | La France Unit #3HH | 9,000 | 22131876 |
| 712027 | Apr 7, 2011 | Apr 7, 2011 | Aruba Petroleum, Inc. | Thomas Unit #2HH | 9,000 | 22131875 |
| 712944 | Mar 30, 2011 | Mar 30, 2011 | Chesapeake Operating, Inc. | Vermont Hares Ear #11HH | 9,000 | 22131874 |
| 712944Amendment | Mar 30, 2011 | Mar 30, 2011 | Chesapeake Operating, Inc. | Vermont Hares Ear #11HH | 9,000 | 22131874 |
| 712943 | Mar 30, 2011 | Mar 30, 2011 | Chesapeake Operating, Inc. | Vermont Hares Ear #10HH | 9,000 | 22131873 |
| 712943Amendment | Mar 30, 2011 | Mar 30, 2011 | Chesapeake Operating, Inc. | Vermont Hares Ear #10HH | 9,000 | 22131873 |
| 711966 | Mar 17, 2011 | Mar 17, 2011 | Aruba Petroleum, Inc. | Thomas Unit #1HH | 9,000 | 22131872 |
| 711966Amendment | Mar 17, 2011 | Mar 17, 2011 | Aruba Petroleum, Inc. | Thomas Unit #1HH | 9,000 | 22131872 |
| 708076 | Jan 10, 2011 | Jan 10, 2011 | Quicksilver Resources Inc. | Mill Stream Unit #9HH | 9,000 | 22131871 |
| 708076Amendment | Jan 10, 2011 | Jan 10, 2011 | Quicksilver Resources Inc. | Mill Stream Unit #9HH | 9,000 | 22131871 |
| 708067 | Jan 10, 2011 | Jan 10, 2011 | Quicksilver Resources Inc. | Mill Stream Unit #8HH | 9,000 | 22131870 |
| 708067Amendment | Jan 10, 2011 | Jan 10, 2011 | Quicksilver Resources Inc. | Mill Stream Unit #8HH | 9,000 | 22131870 |
| 708065 | Jan 10, 2011 | Jan 10, 2011 | Quicksilver Resources Inc. | Mill Stream Unit #7HH | 9,000 | 22131869 |
| 708065Amendment | Jan 10, 2011 | Jan 10, 2011 | Quicksilver Resources Inc. | Mill Stream Unit #7HH | 9,000 | 22131869 |
| 707212 | Dec 22, 2010 | Dec 22, 2010 | Aruba Petroleum, Inc. | Alberthal #3HH | 9,000 | 22131868 |
| 707210 | Dec 21, 2010 | Dec 21, 2010 | Aruba Petroleum, Inc. | Alberthal #2HH | 9,000 | 22131867 |
| 706838 | Dec 14, 2010 | Dec 14, 2010 | Quicksilver Resources Inc. | Mabery Unit #1HH | 9,000 | 22131866 |
| 706275 | Dec 6, 2010 | Dec 6, 2010 | Quicksilver Resources Inc. | McGilvery Unit #4HH | 9,000 | 22131864 |
| 706275Amendment | Dec 6, 2010 | Dec 6, 2010 | Quicksilver Resources Inc. | McGilvery Unit #4HH | 9,000 | 22131864 |
| 706261 | Dec 6, 2010 | Dec 6, 2010 | Quicksilver Resources Inc. | McGilvery Unit #3HH | 9,000 | 22131863 |
| 706261Amendment | Dec 6, 2010 | Dec 6, 2010 | Quicksilver Resources Inc. | McGilvery Unit #3HH | 9,000 | 22131863 |
| 706259 | Dec 6, 2010 | Dec 6, 2010 | Quicksilver Resources Inc. | McGilvery Unit #2HH | 9,000 | 22131865 |
| 706259Amendment | Dec 6, 2010 | Dec 6, 2010 | Quicksilver Resources Inc. | McGilvery Unit #2HH | 9,000 | 22131865 |
| 706195 | Dec 3, 2010 | Dec 3, 2010 | Chesapeake Operating, Inc. | Vermont Hares Ear #9HH | 9,000 | 22131862 |
| 706191 | Dec 3, 2010 | Dec 3, 2010 | Chesapeake Operating, Inc. | Vermont Hares Ear #8HH | 9,000 | 22131861 |
| 706190 | Dec 3, 2010 | Dec 3, 2010 | Chesapeake Operating, Inc. | Vermont Hares Ear #7HH | 9,000 | 22131860 |
| 706187 | Dec 3, 2010 | Dec 3, 2010 | Chesapeake Operating, Inc. | Vermont Hares Ear #6HH | 9,000 | 22131859 |
| 706063 | Dec 1, 2010 | Dec 1, 2010 | Quicksilver Resources Inc. | Acton Meadows #2HH | 9,000 | 22131858 |
| 706063Amendment | Dec 1, 2010 | Dec 1, 2010 | Quicksilver Resources Inc. | Acton Meadows #2HH | 9,000 | 22131858 |
| 705640 | Nov 22, 2010 | Nov 22, 2010 | Quicksilver Resources Inc. | Coyote Crossing Unit #3HH | 9,000 | 22131857 |
| 705636 | Nov 22, 2010 | Nov 22, 2010 | Quicksilver Resources Inc. | Coyote Crossing Unit #2HH | 9,000 | 22131856 |
| 705636Amendment | Nov 22, 2010 | Nov 22, 2010 | Quicksilver Resources Inc. | Coyote Crossing Unit #2HH | 9,000 | 22131856 |
| 704623 | Nov 5, 2010 | Nov 5, 2010 | Quicksilver Resources Inc. | Silver Bullet Unit #4HH | 9,000 | 22131854 |
| 704623Amendment | Nov 5, 2010 | Nov 5, 2010 | Quicksilver Resources Inc. | Silver Bullet Unit #4HH | 9,000 | 22131854 |
| 704621 | Nov 5, 2010 | Nov 5, 2010 | Quicksilver Resources Inc. | Silver Bullet Unit #3HH | 9,000 | 22131855 |
| 704619 | Nov 5, 2010 | Nov 5, 2010 | Quicksilver Resources Inc. | Silver Bullet Unit #1HH | 9,000 | 22131853 |
| 703388 | Oct 11, 2010 | Oct 11, 2010 | Chesapeake Operating, Inc. | Little Hoss #A 7HH | 9,000 | 22131852 |
| 703388Amendment | Oct 11, 2010 | Oct 11, 2010 | Chesapeake Operating, Inc. | Little Hoss #A 7HH | 9,000 | 22131852 |
| 703386 | Oct 11, 2010 | Oct 11, 2010 | Chesapeake Operating, Inc. | Little Hoss #A 6HH | 9,000 | 22131851 |
| 703386Amendment | Oct 11, 2010 | Oct 11, 2010 | Chesapeake Operating, Inc. | Little Hoss #A 6HH | 9,000 | 22131851 |
| 703384 | Oct 11, 2010 | Oct 11, 2010 | Chesapeake Operating, Inc. | Little Hoss #A 5HH | 9,000 | 22131850 |
| 702874 | Sep 30, 2010 | Sep 30, 2010 | Chesapeake Operating, Inc. | Little Hoss 7 #F 5HH | 9,000 | 22131849 |
| 702580 | Sep 24, 2010 | Sep 24, 2010 | Quicksilver Resources Inc. | Radar West Unit #2HH | 9,000 | 22131848 |
| 702579 | Sep 24, 2010 | Sep 24, 2010 | Quicksilver Resources Inc. | Radar West Unit #1HH | 9,000 | 22131847 |
| 697775 | Jun 18, 2010 | Jun 18, 2010 | Quicksilver Resources Inc. | Harris Langford Unit #2HH | 9,000 | 22131845 |
| 697774 | Jun 18, 2010 | Jun 18, 2010 | Quicksilver Resources Inc. | Harris Langford Unit #3HH | 9,000 | 22131846 |
| 697715 | Jun 18, 2010 | Jun 18, 2010 | Quicksilver Resources Inc. | Harris Langford Unit #1HH | 9,000 | 22131844 |
| 697135 | Jun 8, 2010 | Jun 8, 2010 | Titan Operating, LLC | Milburn Unit #2HH | 6,500 | 22131843 |
| 697132 | Jun 8, 2010 | Jun 8, 2010 | Titan Operating, LLC | Milburn Unit #1HH | 6,500 | 22131842 |
| 696553 | May 28, 2010 | May 28, 2010 | Quicksilver Resources Inc. | Caven #4HH | 9,000 | 22131841 |
| 696417 | May 24, 2010 | May 24, 2010 | Quicksilver Resources Inc. | Ladd Unit #4HH | 9,000 | 22131840 |
| 696417Amendment | May 24, 2010 | May 24, 2010 | Quicksilver Resources Inc. | Ladd Unit #4HH | 9,000 | 22131840 |
| 695922 | May 14, 2010 | May 14, 2010 | Chesapeake Operating, Inc. | Little Hoss #V 4HH | 9,000 | 22131839 |
| 695922Amendment | May 14, 2010 | May 14, 2010 | Chesapeake Operating, Inc. | Little Hoss #V 4HH | 9,000 | 22131839 |
| 695517 | May 6, 2010 | May 6, 2010 | Quicksilver Resources Inc. | Ladd Unit #3HH | 9,000 | 22131838 |
| 695517Amendment | May 6, 2010 | May 6, 2010 | Quicksilver Resources Inc. | Ladd Unit #3HH | 9,000 | 22131838 |
| 694223 | Apr 12, 2010 | Apr 12, 2010 | Quicksilver Resources Inc. | Red Dragon Unit #4HH | 9,000 | 22131837 |
| 693435 | Apr 9, 2010 | Apr 9, 2010 | Range Production Company | Bowie #1HH | 9,000 | 22131835 |
| 693435Amendment | Apr 9, 2010 | Apr 9, 2010 | Range Production Company | Bowie #1HH | 9,000 | 22131835 |
| 691337 | Feb 17, 2010 | Feb 17, 2010 | Quicksilver Resources Inc. | Briscoe East Unit #2HH | 9,000 | 22131834 |
| 690604 | Feb 3, 2010 | Feb 3, 2010 | XTO Energy Inc. | South Jacobs Branch A #2HH | 10,000 | 22131833 |
| 690604Amendment | Feb 3, 2010 | Feb 3, 2010 | XTO Energy Inc. | South Jacobs Branch A #2HH | 10,000 | 22131833 |
| 689639 | Jan 13, 2010 | Jan 13, 2010 | Quicksilver Resources Inc. | Briscoe West Unit #3HH | 9,000 | 22131832 |
| 689003 | Dec 28, 2009 | Dec 28, 2009 | Quicksilver Resources Inc. | Mill Stream Unit #4HH | 9,000 | 22131831 |
| 688684 | Dec 17, 2009 | Dec 17, 2009 | Quicksilver Resources Inc. | Dyer Unit #1HH | 9,000 | 22131830 |
| 686108 | Oct 14, 2009 | Oct 14, 2009 | Titan Operating, LLC | M & M Ranch #4HH | 7,000 | 22131829 |
| 686106 | Oct 14, 2009 | Oct 14, 2009 | Titan Operating, LLC | M & M Ranch #3HH | 7,000 | 22131828 |
| 685642 | Sep 30, 2009 | Sep 30, 2009 | Quicksilver Resources Inc. | Stingray Unit #5HH | 9,000 | 22131826 |
| 685596 | Sep 29, 2009 | Sep 29, 2009 | Quicksilver Resources Inc. | Stingray Unit #2HH | 9,000 | 22131825 |
| 685037 | Sep 14, 2009 | Sep 14, 2009 | Quicksilver Resources Inc. | Decordova Ranch Unit #8HH | 9,000 | 22131824 |
| 685037Amendment | Sep 14, 2009 | Sep 14, 2009 | Quicksilver Resources Inc. | Decordova Ranch Unit #8HH | 9,000 | 22131824 |
| 682503 | Jun 26, 2009 | Jun 26, 2009 | Quicksilver Resources Inc. | Julia Rose Unit #4HH | 9,000 | 22131823 |
| 682502 | Jun 26, 2009 | Jun 26, 2009 | Quicksilver Resources Inc. | Julia Rose Unit #3HH | 9,000 | 22131822 |
| 682501 | Jun 26, 2009 | Jun 26, 2009 | Quicksilver Resources Inc. | Julia Rose Unit #2HH | 9,000 | 22131821 |
| 682501Amendment | Jun 26, 2009 | Jun 26, 2009 | Quicksilver Resources Inc. | Julia Rose Unit #2HH | 9,000 | 22131821 |
| 682501Amendment | Jun 26, 2009 | Jun 26, 2009 | Quicksilver Resources Inc. | Julia Rose Unit #2HH | 9,000 | 22131821 |