| 701476 | Sep 8, 2011 | Sep 8, 2011 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith B East #6HH | 8,500 | 12134075 |
| 701342 | Sep 8, 2011 | Sep 8, 2011 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith B East #5HH | 8,500 | 12134074 |
| 702335 | Oct 15, 2010 | Oct 15, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith B East #8HH | 8,500 | 12134088 |
| 702303 | Oct 13, 2010 | Oct 13, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith B East #7HH | 8,500 | 12134087 |
| 702502 | Sep 22, 2010 | Sep 22, 2010 | Williams Prod. Gulf Coast, L.P. | Parker | Clemens #4HH | 8,500 | 36735096 |
| 702500 | Sep 22, 2010 | Sep 22, 2010 | Williams Prod. Gulf Coast, L.P. | Parker | Clemens #3HH | 8,500 | 36735095 |
| 699856 | Aug 17, 2010 | Aug 17, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit C #12HH | 8,500 | 12134065 |
| 699856Amendment | Aug 17, 2010 | Aug 17, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit C #12HH | 8,500 | 12134065 |
| 699856Amendment | Aug 17, 2010 | Aug 17, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit C #12HH | 8,500 | 12134065 |
| 699856Amendment | Aug 17, 2010 | Aug 17, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit C #12HH | 8,500 | 12134065 |
| 699849 | Aug 17, 2010 | Aug 17, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit C #11HH | 8,500 | 12134051 |
| 699849Amendment | Aug 17, 2010 | Aug 17, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit C #11HH | 8,500 | 12134051 |
| 699930 | Aug 2, 2010 | Aug 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cobb Unit #4HH | 8,500 | 12134059 |
| 699925 | Aug 2, 2010 | Aug 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cobb Unit #3H | 8,500 | 12134058 |
| 699903 | Aug 2, 2010 | Aug 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cobb Unit #1HH | 8,500 | 12134052 |
| 699903Amendment | Aug 2, 2010 | Aug 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cobb Unit #1HH | 8,500 | 12134052 |
| 699858 | Aug 2, 2010 | Aug 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit D #14HH | 8,500 | 12134054 |
| 699858Amendment | Aug 2, 2010 | Aug 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit D #14HH | 8,500 | 12134054 |
| 699858Amendment | Aug 2, 2010 | Aug 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit D #14HH | 8,500 | 12134054 |
| 699853 | Aug 2, 2010 | Aug 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit D #13HH | 8,500 | 12134053 |
| 699853Amendment | Aug 2, 2010 | Aug 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit D #13HH | 8,800 | 12134053 |
| 699853Amendment | Aug 2, 2010 | Aug 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit D #13HH | 8,800 | 12134053 |
| 699844 | Aug 2, 2010 | Aug 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit C #9HH | 8,500 | 12134049 |
| 699918 | Jul 30, 2010 | Jul 30, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cobb Unit #2HH | 8,500 | 12134057 |
| 699918Amendment | Jul 30, 2010 | Jul 30, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cobb Unit #2HH | 8,500 | 12134057 |
| 699918Amendment | Jul 30, 2010 | Jul 30, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cobb Unit #2HH | 8,500 | 12134057 |
| 699845 | Jul 30, 2010 | Jul 30, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit C #10HH | 8,500 | 12134050 |
| 699845Amendment | Jul 30, 2010 | Jul 30, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit C #10HH | 8,500 | 12134050 |
| 699841 | Jul 30, 2010 | Jul 30, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit C #8HH | 8,500 | 12134048 |
| 699712 | Jul 29, 2010 | Jul 29, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit B #7HH | 8,500 | 12134046 |
| 699709 | Jul 29, 2010 | Jul 29, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit B #6HH | 8,500 | 12134047 |
| 699709Amendment | Jul 29, 2010 | Jul 29, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit B #6HH | 8,500 | 12134047 |
| 699705 | Jul 29, 2010 | Jul 29, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit B #5HH | 8,500 | 12134045 |
| 699705Amendment | Jul 29, 2010 | Jul 29, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit B #5HH | 8,500 | 12134045 |
| 699393 | Jul 23, 2010 | Jul 23, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit A #4HH | 8,500 | 12134044 |
| 699390 | Jul 23, 2010 | Jul 23, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit A #3HH | 8,500 | 12134043 |
| 699388 | Jul 23, 2010 | Jul 23, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit A #2HH | 8,500 | 12134042 |
| 699388Amendment | Jul 23, 2010 | Jul 23, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit A #2HH | 8,500 | 12134042 |
| 699380 | Jul 23, 2010 | Jul 23, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit A #1HH | 8,500 | 12134041 |
| 699380Amendment | Jul 23, 2010 | Jul 23, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit A #1HH | 8,500 | 12134041 |
| 699380Amendment | Jul 23, 2010 | Jul 23, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Ace Unit A #1HH | 8,500 | 12134041 |
| 696944 | Jul 2, 2010 | Jul 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith C East #5HH | 8,425 | 12133999 |
| 696944Amendment | Jul 2, 2010 | Jul 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith C East #5HH | 8,425 | 12133999 |
| 697361 | Jun 15, 2010 | Jun 15, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith a West #13HH | 8,500 | 12134023 |
| 697361Amendment | Jun 15, 2010 | Jun 15, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith a West #13HH | 8,500 | 12134023 |
| 697327 | Jun 15, 2010 | Jun 15, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith a West #12HH | 8,500 | 12134022 |
| 697327Amendment | Jun 15, 2010 | Jun 15, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith a West #12HH | 8,500 | 12134022 |
| 697327Amendment | Jun 15, 2010 | Jun 15, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith a West #12HH | 8,500 | 12134022 |
| 697492 | Jun 14, 2010 | Jun 14, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cross Timbers #5HH | 8,700 | 12134025 |
| 697491 | Jun 11, 2010 | Jun 11, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cross Timbers #4HH | 8,700 | 12134024 |
| 697321 | Jun 11, 2010 | Jun 11, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith a West #11HH | 8,500 | 12134021 |
| 696996 | Jun 8, 2010 | Jun 8, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cummings C East #13HH | 8,500 | 12134007 |
| 696991 | Jun 8, 2010 | Jun 8, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cummings C East #12HH | 8,500 | 12134006 |
| 696991Amendment | Jun 8, 2010 | Jun 8, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cummings C East #12HH | 8,500 | 12134006 |
| 696986 | Jun 8, 2010 | Jun 8, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cummings C East #11HH | 8,500 | 12134005 |
| 696981 | Jun 8, 2010 | Jun 8, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cummings C East #10HH | 8,500 | 12134004 |
| 696978 | Jun 7, 2010 | Jun 7, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cummings C East #9HH | 8,500 | 12134003 |
| 696978Amendment | Jun 7, 2010 | Jun 7, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cummings C East #9HH | 8,500 | 12134003 |
| 696956 | Jun 4, 2010 | Jun 4, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith C East #8HH | 8,425 | 12134002 |
| 696956Amendment | Jun 4, 2010 | Jun 4, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith C East #8HH | 8,425 | 12134002 |
| 696955 | Jun 3, 2010 | Jun 3, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith C East #7HH | 8,425 | 12134001 |
| 696955Amendment | Jun 3, 2010 | Jun 3, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith C East #7HH | 8,425 | 12134001 |
| 696954 | Jun 3, 2010 | Jun 3, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith C East #6HH | 8,425 | 12134000 |
| 696954Amendment | Jun 3, 2010 | Jun 3, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith C East #6HH | 8,425 | 12134000 |
| 696872 | Jun 2, 2010 | Jun 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith C West #4HH | 8,425 | 12133998 |
| 696864 | Jun 2, 2010 | Jun 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith C West #3HH | 8,425 | 12133997 |
| 696846 | Jun 2, 2010 | Jun 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith C West #2HH | 8,425 | 12133995 |
| 696843 | Jun 2, 2010 | Jun 2, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Dr. Bob Smith C West #1HH | 8,425 | 12133994 |
| 696485 | May 25, 2010 | May 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Casner #8HH | 8,500 | 12133990 |
| 696485Amendment | May 25, 2010 | May 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Casner #8HH | 8,500 | 12133990 |
| 696484 | May 25, 2010 | May 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Casner #7HH | 8,500 | 12133989 |
| 696484Amendment | May 25, 2010 | May 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Casner #7HH | 8,500 | 12133989 |
| 696482 | May 25, 2010 | May 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Casner #6HH | 8,500 | 12133988 |
| 696482Amendment | May 25, 2010 | May 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Casner #6HH | 8,500 | 12133988 |
| 696481 | May 25, 2010 | May 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Casner #5HH | 8,500 | 12133987 |
| 696481Amendment | May 25, 2010 | May 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Casner #5HH | 8,500 | 12133987 |
| 696337 | May 21, 2010 | May 21, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cross Timbers #3HH | 8,500 | 12133985 |
| 696335 | May 21, 2010 | May 21, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cross Timbers #2HH | 8,500 | 12133984 |
| 696214 | May 20, 2010 | May 20, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cross Timbers #1HH | 8,250 | 12133981 |
| 693941 | Apr 6, 2010 | Apr 6, 2010 | Williams Prod. Gulf Coast, L.P. | Wise | Childers A #6HH | 8,500 | 49737034 |
| 693941Amendment | Apr 6, 2010 | Apr 6, 2010 | Williams Prod. Gulf Coast, L.P. | Wise | Childers A #6HH | 8,500 | 49737034 |
| 693616 | Mar 30, 2010 | Mar 30, 2010 | Williams Prod. Gulf Coast, L.P. | Wise | Childers A #5HH | 8,500 | 49737031 |
| 693616Amendment | Mar 30, 2010 | Mar 30, 2010 | Williams Prod. Gulf Coast, L.P. | Wise | Childers A #5HH | 8,500 | 49737031 |
| 693368 | Mar 26, 2010 | Mar 26, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Chen Unit A #1HH | 8,500 | 12133947 |
| 693368Amendment | Mar 26, 2010 | Mar 26, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Chen Unit A #1HH | 8,500 | 12133947 |
| 693377 | Mar 25, 2010 | Mar 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Chen Unit A #3HH | 8,500 | 12133949 |
| 693371 | Mar 25, 2010 | Mar 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Chen Unit A #2HH | 8,500 | 12133948 |
| 693371Amendment | Mar 25, 2010 | Mar 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Chen Unit A #2HH | 8,500 | 12133948 |
| 693343 | Mar 25, 2010 | Mar 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Chen Unit B #5HH | 8,500 | 12133945 |
| 693343Amendment | Mar 25, 2010 | Mar 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Chen Unit B #5HH | 8,500 | 12133945 |
| 693335 | Mar 25, 2010 | Mar 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Chen Unit B #4HH | 8,500 | 12133944 |
| 693335Amendment | Mar 25, 2010 | Mar 25, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Chen Unit B #4HH | 8,500 | 12133944 |
| 693349 | Mar 24, 2010 | Mar 24, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Chen Unit B #6HH | 8,500 | 12133946 |
| 693349Amendment | Mar 24, 2010 | Mar 24, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Chen Unit B #6HH | 8,500 | 12133946 |
| 692688 | Mar 12, 2010 | Mar 12, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cummings B #9HH | 7,900 | 12133936 |
| 692688Amendment | Mar 12, 2010 | Mar 12, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cummings B #9HH | 8,500 | 12133936 |
| 692685 | Mar 12, 2010 | Mar 12, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cummings B #8HH | 7,900 | 12133935 |
| 692685Amendment | Mar 12, 2010 | Mar 12, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cummings B #8HH | 8,500 | 12133935 |
| 692680 | Mar 12, 2010 | Mar 12, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cummings B #7HH | 7,900 | 12133933 |
| 692680Amendment | Mar 12, 2010 | Mar 12, 2010 | Williams Prod. Gulf Coast, L.P. | Denton | Cummings B #7HH | 8,500 | 12133933 |