| 685512Amendment | Sep 24, 2009 | Sep 24, 2009 | Chesapeake Operating, Inc. | Barnes Assembly A #3HH | 9,500 | 11330193 |
| 684318 | Aug 24, 2009 | Aug 24, 2009 | Expro Engineering, Inc. | Manhattan #1HH | 10,000 | 11330192 |
| 684162 | Aug 18, 2009 | Aug 18, 2009 | Chesapeake Operating, Inc. | West Carpo #3HH | 9,000 | 11330191 |
| 684162Amendment | Aug 18, 2009 | Aug 18, 2009 | Chesapeake Operating, Inc. | West Carpo #3HH | 9,000 | 11330191 |
| 684162Amendment | Aug 18, 2009 | Aug 18, 2009 | Chesapeake Operating, Inc. | West Carpo #3HH | 9,000 | 11330191 |
| 684162Amendment | Aug 18, 2009 | Aug 18, 2009 | Chesapeake Operating, Inc. | West Carpo #3HH | 9,000 | 11330191 |
| 684162Amendment | Aug 18, 2009 | Aug 18, 2009 | Chesapeake Operating, Inc. | West Carpo #3HH | 9,000 | 11330191 |
| 684162Amendment | Aug 18, 2009 | Aug 18, 2009 | Chesapeake Operating, Inc. | West Carpo #3HH | 9,000 | 11330191 |
| 684162Amendment | Aug 18, 2009 | Aug 18, 2009 | Chesapeake Operating, Inc. | West Carpo #3HH | 9,500 | 11330191 |
| 680483 | Apr 20, 2009 | Apr 20, 2009 | Chesapeake Operating, Inc. | Campbell Unit #3HH | 9,000 | 11330190 |
| 680483Amendment | Apr 20, 2009 | Apr 20, 2009 | Chesapeake Operating, Inc. | Campbell #3HH | 9,000 | 11330190 |
| 680483Amendment | Apr 20, 2009 | Apr 20, 2009 | Chesapeake Operating, Inc. | Campbell #3HH | 9,000 | 11330190 |
| 680483Amendment | Apr 20, 2009 | Apr 20, 2009 | Chesapeake Operating, Inc. | Campbell #3HH | 10,000 | 11330190 |
| 675491Amendment | Apr 13, 2009 | Apr 13, 2009 | Chesapeake Operating, Inc. | Childs Kelley A #1HH | 9,000 | 11330179 |
| 675491Amendment | Apr 13, 2009 | Apr 13, 2009 | Chesapeake Operating, Inc. | Childs Kelley A #1HH | 9,000 | 11330179 |
| 675491Amendment | Apr 13, 2009 | Apr 13, 2009 | Chesapeake Operating, Inc. | Childs Kelley A #1HH | 9,000 | 11330179 |
| 675491Amendment | Apr 13, 2009 | Apr 13, 2009 | Chesapeake Operating, Inc. | Childs Kelley A #1HH | 10,000 | 11330179 |
| 655485Amendment | Mar 18, 2009 | Mar 18, 2009 | Chesapeake Operating, Inc. | Danciger Trust #4HH | 9,000 | 11330134 |
| 678911 | Feb 27, 2009 | Feb 27, 2009 | Expro Engineering, Inc. | UD-Dallas Gas Unit #1HH | 9,500 | 11330189 |
| 661267Amendment | Feb 27, 2009 | Feb 27, 2009 | Expro Engineering, Inc. | UD Gas Unit #1HH | 9,500 | 11330147 |
| 677951 | Jan 30, 2009 | Jan 30, 2009 | Chesapeake Operating, Inc. | DFW #A 7HCH | 9,000 | 11330186 |
| 677950 | Jan 30, 2009 | Jan 30, 2009 | Chesapeake Operating, Inc. | DFW #A 6HCH | 9,000 | 11330185 |
| 677949 | Jan 30, 2009 | Jan 30, 2009 | Chesapeake Operating, Inc. | DFW #A 5HCH | 9,000 | 11330187 |
| 677947 | Jan 30, 2009 | Jan 30, 2009 | Chesapeake Operating, Inc. | DFW North #A 3HCH | 9,000 | 11330184 |
| 677946 | Jan 30, 2009 | Jan 30, 2009 | Chesapeake Operating, Inc. | DFW North #A 2HCH | 9,000 | 11330188 |
| 677946Amendment | Jan 30, 2009 | Jan 30, 2009 | Chesapeake Operating, Inc. | DFW North #A 2HCH | 9,000 | 11330188 |
| 667341Amendment | Dec 16, 2008 | Dec 16, 2008 | Range Production Company | Waddle Unit #1HH | 9,000 | 11330180 |
| 667341Amendment | Dec 16, 2008 | Dec 16, 2008 | Range Production Company | Waddle Unit #1HH | 9,000 | 11330180 |
| 675491Amendment | Dec 10, 2008 | Dec 10, 2008 | Chesapeake Operating, Inc. | Childs Kelley A #1HH | 9,000 | 11330179 |
| 675491 | Nov 26, 2008 | Nov 26, 2008 | Chesapeake Operating, Inc. | Childs Kelly #1HH | 9,000 | 11330179 |
| 674780 | Nov 20, 2008 | Nov 20, 2008 | Chesapeake Operating, Inc. | Texas Dakota #2HH | 9,000 | 11330175 |
| 674783 | Nov 19, 2008 | Nov 19, 2008 | Chesapeake Operating, Inc. | Texas Dakota #5HH | 9,000 | 11330177 |
| 674781 | Nov 19, 2008 | Nov 19, 2008 | Chesapeake Operating, Inc. | Texas Dakota #4HH | 9,000 | 11330176 |
| 674778 | Nov 19, 2008 | Nov 19, 2008 | Chesapeake Operating, Inc. | Texas Dakota #1HH | 9,000 | 11330178 |
| 674776 | Nov 17, 2008 | Nov 17, 2008 | Chesapeake Operating, Inc. | Massey B #4HH | 9,000 | 11330174 |
| 674774 | Nov 17, 2008 | Nov 17, 2008 | Chesapeake Operating, Inc. | Massey B #3HH | 9,000 | 11330173 |
| 674772 | Nov 17, 2008 | Nov 17, 2008 | Chesapeake Operating, Inc. | Massey B #2HH | 9,000 | 11330172 |
| 674771 | Nov 17, 2008 | Nov 17, 2008 | Chesapeake Operating, Inc. | Massey B #1HH | 9,000 | 11330171 |
| 673284 | Nov 7, 2008 | Nov 7, 2008 | Chesapeake Operating, Inc. | Callejo #1HH | 9,000 | 11330170 |
| 673284Amendment | Nov 7, 2008 | Nov 7, 2008 | Chesapeake Operating, Inc. | Callejo #1HH | 9,000 | 11330170 |
| 673453 | Nov 3, 2008 | Nov 3, 2008 | Chesapeake Operating, Inc. | Callejo #2HH | 9,000 | 11330169 |
| 673453Amendment | Nov 3, 2008 | Nov 3, 2008 | Chesapeake Operating, Inc. | Callejo #2HH | 9,000 | 11330169 |
| 671650 | Oct 4, 2008 | Oct 4, 2008 | Expro Engineering, Inc. | Parkwest Unit #1H | 12,000 | 11330164 |
| 658947Amendment | Sep 25, 2008 | Sep 25, 2008 | Chesapeake Operating, Inc. | Fellowship #3HH | 9,000 | 11330142 |
| 658946Amendment | Sep 25, 2008 | Sep 25, 2008 | Chesapeake Operating, Inc. | Fellowship #2HH | 9,000 | 11330144 |
| 658945Amendment | Sep 25, 2008 | Sep 25, 2008 | Chesapeake Operating, Inc. | Fellowship #1HH | 9,000 | 11330140 |
| 670608 | Sep 24, 2008 | Sep 24, 2008 | Chesapeake Operating, Inc. | Fellowship #7HH | 9,000 | 11330163 |
| 670608Amendment | Sep 24, 2008 | Sep 24, 2008 | Chesapeake Operating, Inc. | Fellowship #7HH | 9,000 | 11330163 |
| 670608Amendment | Sep 24, 2008 | Sep 24, 2008 | Chesapeake Operating, Inc. | Fellowship #7HH | 9,000 | 11330163 |
| 657801Amendment | Sep 16, 2008 | Sep 16, 2008 | Chesapeake Operating, Inc. | Danciger Trust #6HH | 9,000 | 11330139 |
| 669859 | Sep 15, 2008 | Sep 15, 2008 | Chesapeake Operating, Inc. | DFW #D 3HEH | 9,000 | 11330162 |
| 666011 | Aug 28, 2008 | Aug 28, 2008 | North Texas Llano Operating Corp | Isaminger #1HH | 9,000 | 11330157 |
| 667439 | Aug 9, 2008 | Aug 9, 2008 | North Texas Llano Operating Corp | Witt #1HH | 9,000 | 11330161 |
| 666790 | Aug 2, 2008 | Aug 2, 2008 | Chesapeake Operating, Inc. | DFW #C 2HTH | 9,000 | 11330156 |
| 666789 | Aug 2, 2008 | Aug 2, 2008 | Chesapeake Operating, Inc. | DFW #D 4HDH | 9,000 | 11330155 |
| 666025 | Jul 24, 2008 | Jul 24, 2008 | North Texas Llano Operating Corp | Isaminger #3HH | 9,000 | 11330153 |
| 666019 | Jul 24, 2008 | Jul 24, 2008 | North Texas Llano Operating Corp | Isaminger #2HH | 9,000 | 11330154 |
| 665637 | Jul 21, 2008 | Jul 21, 2008 | Chesapeake Operating, Inc. | DFW #D 7HBH | 9,000 | 11330152 |
| 665637Amendment | Jul 21, 2008 | Jul 21, 2008 | Chesapeake Operating, Inc. | DFW #D 7HBH | 9,000 | 11330152 |
| 665636 | Jul 21, 2008 | Jul 21, 2008 | Chesapeake Operating, Inc. | DFW #D 5HBH | 9,000 | 11330151 |
| 665636Amendment | Jul 21, 2008 | Jul 21, 2008 | Chesapeake Operating, Inc. | DFW #D 5HBH | 9,000 | 11330151 |
| 665635 | Jul 21, 2008 | Jul 21, 2008 | Chesapeake Operating, Inc. | DFW #D 3HBH | 9,000 | 11330148 |
| 665635Amendment | Jul 21, 2008 | Jul 21, 2008 | Chesapeake Operating, Inc. | DFW #D 3HBH | 9,000 | 11330148 |
| 665634 | Jul 21, 2008 | Jul 21, 2008 | Chesapeake Operating, Inc. | DFW #C 9HCH | 9,000 | 11330149 |
| 646992Amendment | Jun 18, 2008 | Jun 18, 2008 | Chesapeake Operating, Inc. | DFW North #A 9HNH | 9,000 | 11330127 |
| 642508Amendment | May 29, 2008 | May 29, 2008 | Chesapeake Operating, Inc. | DFW North #A 7HNH | 9,000 | 11330117 |
| 661267 | May 19, 2008 | May 19, 2008 | Expro Engineering, Inc. | UD #1HH | 9,500 | 11330147 |
| 659758 | May 9, 2008 | May 9, 2008 | North Texas Llano Operating Corp | Gregory #1HH | 9,000 | 11330146 |
| 659718 | Apr 30, 2008 | Apr 30, 2008 | North Texas Llano Operating Corp | Turbeville #1HH | 9,000 | 11330145 |
| 658949 | Apr 21, 2008 | Apr 21, 2008 | Chesapeake Operating, Inc. | Fellowship #5HH | 9,000 | 11330143 |
| 658949Amendment | Apr 21, 2008 | Apr 21, 2008 | Chesapeake Operating, Inc. | Fellowship #5HH | 9,000 | 11330143 |
| 658949Amendment | Apr 21, 2008 | Apr 21, 2008 | Chesapeake Operating, Inc. | Fellowship #5HH | 9,000 | 11330143 |
| 658948 | Apr 21, 2008 | Apr 21, 2008 | Chesapeake Operating, Inc. | Fellowship #4HH | 9,000 | 11330141 |
| 658947 | Apr 21, 2008 | Apr 21, 2008 | Chesapeake Operating, Inc. | Fellowship #3HH | 9,000 | 11330142 |
| 658946 | Apr 21, 2008 | Apr 21, 2008 | Chesapeake Operating, Inc. | Fellowship #2HH | 9,000 | 11330144 |
| 658945 | Apr 21, 2008 | Apr 21, 2008 | Chesapeake Operating, Inc. | Fellowship #1HH | 9,000 | 11330140 |
| 657801 | Apr 2, 2008 | Apr 2, 2008 | Chesapeake Operating, Inc. | Danciger Trust #6HH | 9,000 | 11330139 |
| 657669 | Mar 31, 2008 | Mar 31, 2008 | Dale Operating Company | Staphs J. V. #1HH | 10,000 | 11330138 |
| 657668 | Mar 31, 2008 | Mar 31, 2008 | Dale Operating Company | Hardrock Properties, Ltd. #1HH | 10,000 | 11330137 |
| 656522 | Mar 12, 2008 | Mar 12, 2008 | Chesapeake Operating, Inc. | DFW #C 3HTH | 9,000 | 11330136 |
| 656050 | Mar 5, 2008 | Mar 5, 2008 | Dale Operating Company | M Enterprises #1HH | 10,000 | 11330135 |
| 655485 | Feb 28, 2008 | Feb 28, 2008 | Chesapeake Operating, Inc. | Danciger Trust #4HH | 9,000 | 11330134 |
| 654562 | Feb 12, 2008 | Feb 12, 2008 | Chesapeake Operating, Inc. | DFW #C 4HHH | 9,000 | 11330133 |
| 654562Amendment | Feb 12, 2008 | Feb 12, 2008 | Chesapeake Operating, Inc. | DFW #C 4HHH | 9,000 | 11330133 |
| 654562Amendment | Feb 12, 2008 | Feb 12, 2008 | Chesapeake Operating, Inc. | DFW #C 4HHH | 9,000 | 11330133 |
| 654561 | Feb 12, 2008 | Feb 12, 2008 | Chesapeake Operating, Inc. | DFW #C 1HHH | 9,000 | 11330132 |
| 654561Amendment | Feb 12, 2008 | Feb 12, 2008 | Chesapeake Operating, Inc. | DFW #C 1HHH | 9,000 | 11330132 |
| 652104 | Jan 4, 2008 | Jan 4, 2008 | Dale Operating Company | Equitable #1HH | 10,000 | 11330131 |
| 652104Amendment | Jan 4, 2008 | Jan 4, 2008 | Dale Operating Company | Equitable #1HH | 10,000 | 11330131 |
| 652029 | Jan 4, 2008 | Jan 4, 2008 | Chesapeake Operating, Inc. | Fellowship #6HH | 9,000 | 11330130 |
| 652029Amendment | Jan 4, 2008 | Jan 4, 2008 | Chesapeake Operating, Inc. | Fellowship #6HH | 9,000 | 11330130 |
| 646617Amendment | Dec 19, 2007 | Dec 19, 2007 | Chesapeake Operating, Inc. | Seefried #3HH | 9,000 | 11330122 |
| 644196Amendment | Dec 11, 2007 | Dec 11, 2007 | Chesapeake Operating, Inc. | Campbell #1HH | 9,000 | 11330119 |
| 650472 | Dec 8, 2007 | Dec 8, 2007 | Dale Operating Company | Sadeghian #1HH | 8,730 | 11330129 |
| 649719 | Nov 21, 2007 | Nov 21, 2007 | Chesapeake Operating, Inc. | DFW North #A 4HPH | 9,000 | 11330128 |
| 646990Amendment | Oct 24, 2007 | Oct 24, 2007 | Chesapeake Operating, Inc. | DFW North #A 8HNH | 9,000 | 11330126 |
| 646992 | Oct 3, 2007 | Oct 3, 2007 | Chesapeake Operating, Inc. | DFW North #A 9HNH | 9,000 | 11330127 |
| 646992Amendment | Oct 3, 2007 | Oct 3, 2007 | Chesapeake Operating, Inc. | DFW North #A 9HNH | 9,000 | 11330127 |
| 646990 | Oct 3, 2007 | Oct 3, 2007 | Chesapeake Operating, Inc. | DFW North #A 8HNH | 9,000 | 11330126 |
| 646948 | Oct 3, 2007 | Oct 3, 2007 | Chesapeake Operating, Inc. | DFW North #A 3HPH | 9,000 | 11330125 |