| 643205Amendment | Aug 4, 2007 | Aug 4, 2007 | Devon Energy Production Co, L.P. | Gatlin, Winston #5H | 9,000 | 25132094 |
| 643193 | Aug 4, 2007 | Aug 4, 2007 | Devon Energy Production Co, L.P. | Gatlin, Winston #4H | 9,000 | 25132092 |
| 643193Amendment | Aug 4, 2007 | Aug 4, 2007 | Devon Energy Production Co, L.P. | Gatlin, Winston #4H | 9,000 | 25132092 |
| 643189 | Aug 4, 2007 | Aug 4, 2007 | Devon Energy Production Co, L.P. | Winston Gatlin #3H | 9,000 | 25132091 |
| 643183 | Aug 3, 2007 | Aug 3, 2007 | Devon Energy Production Co, L.P. | Gatlin, Winston #2H | 9,000 | 25132088 |
| 643163 | Aug 3, 2007 | Aug 3, 2007 | Quicksilver Resources Inc. | Wiggum, Ralph #5HH | 9,000 | 25132090 |
| 643158 | Aug 3, 2007 | Aug 3, 2007 | Quicksilver Resources Inc. | Wiggum, Ralph #6HH | 9,000 | 25132089 |
| 643144 | Aug 3, 2007 | Aug 3, 2007 | Devon Energy Production Co, L.P. | Franks, David Ray #4H | 9,000 | 25132086 |
| 643130 | Aug 3, 2007 | Aug 3, 2007 | Quicksilver Resources Inc. | Wiggum, Ralph #7HH | 9,000 | 25132085 |
| 625008Amendment | Aug 3, 2007 | Aug 3, 2007 | XTO Energy Inc. | Forston Burton Kirkland #A 1AHH | 12,000 | 25131163 |
| 643111 | Aug 2, 2007 | Aug 2, 2007 | Devon Energy Production Co, L.P. | Wamsley, Sara #1H | 9,000 | 25132084 |
| 643095 | Aug 2, 2007 | Aug 2, 2007 | Chesapeake Operating, Inc. | Cherry Ridge #2HH | 9,000 | 25132083 |
| 643074 | Aug 2, 2007 | Aug 2, 2007 | Chesapeake Operating, Inc. | Smith, Robert O. #1HH | 9,000 | 25132082 |
| 643010 | Aug 1, 2007 | Aug 1, 2007 | XTO Energy Inc. | Harper Nej #C 1BHH | 12,000 | 25132077 |
| 643010Amendment | Aug 1, 2007 | Aug 1, 2007 | XTO Energy Inc. | Harper Nej East #C 1BHH | 12,000 | 25132077 |
| 642893 | Aug 1, 2007 | Aug 1, 2007 | Chesapeake Operating, Inc. | Cedf #4HH | 9,000 | 25132076 |
| 643146 | Jul 31, 2007 | Jul 31, 2007 | Chesapeake Operating, Inc. | North Parnolan #1HH | 9,000 | 25132087 |
| 643146Amendment | Jul 31, 2007 | Jul 31, 2007 | Chesapeake Operating, Inc. | Senter #1HH | 9,000 | 25132087 |
| 642885 | Jul 31, 2007 | Jul 31, 2007 | Chesapeake Operating, Inc. | Boatramp #2HH | 9,000 | 25132075 |
| 642884 | Jul 31, 2007 | Jul 31, 2007 | Chesapeake Operating, Inc. | Magness #1HH | 9,000 | 25132074 |
| 642873 | Jul 31, 2007 | Jul 31, 2007 | Chesapeake Operating, Inc. | Cedf #9HH | 9,000 | 25132073 |
| 642869 | Jul 31, 2007 | Jul 31, 2007 | EOG Resources, Inc. | River Hills #10HH | 7,800 | 25132072 |
| 642869Amendment | Jul 31, 2007 | Jul 31, 2007 | EOG Resources, Inc. | River Hills #10HH | 10,000 | 25132072 |
| 642832 | Jul 31, 2007 | Jul 31, 2007 | EOG Resources, Inc. | Storm Unit #1HH | 8,900 | 25132071 |
| 642832Amendment | Jul 31, 2007 | Jul 31, 2007 | EOG Resources, Inc. | Storm Unit #1HH | 10,000 | 25132071 |
| 642790 | Jul 31, 2007 | Jul 31, 2007 | EOG Resources, Inc. | Double Diamond Unit #9HH | 7,800 | 25132070 |
| 642789 | Jul 31, 2007 | Jul 31, 2007 | EOG Resources, Inc. | Kemp "D" #6HH | 8,800 | 25132069 |
| 642789Amendment | Jul 31, 2007 | Jul 31, 2007 | EOG Resources, Inc. | Kemp "D" #6HH | 10,000 | 25132069 |
| 642788 | Jul 31, 2007 | Jul 31, 2007 | EOG Resources, Inc. | Kemp "D" #5HH | 8,800 | 25132068 |
| 642788Amendment | Jul 31, 2007 | Jul 31, 2007 | EOG Resources, Inc. | Kemp "D" #5HH | 10,000 | 25132068 |
| 642787 | Jul 31, 2007 | Jul 31, 2007 | EOG Resources, Inc. | Double Diamond Unit #8HH | 7,800 | 25132067 |
| 642785 | Jul 31, 2007 | Jul 31, 2007 | EOG Resources, Inc. | Kemp "D" #4HH | 8,800 | 25132066 |
| 642785Amendment | Jul 31, 2007 | Jul 31, 2007 | EOG Resources, Inc. | Kemp "D" #4HH | 10,000 | 25132066 |
| 642758 | Jul 30, 2007 | Jul 30, 2007 | Burnett Oil Co., Inc. | Decleva Unit B #1HH | 9,000 | 25132065 |
| 642742 | Jul 30, 2007 | Jul 30, 2007 | Chesapeake Operating, Inc. | Pennington #5HH | 9,000 | 25132064 |
| 642742Amendment | Jul 30, 2007 | Jul 30, 2007 | Chesapeake Operating, Inc. | Pennington #5HH | 9,000 | 25132064 |
| 642742Amendment | Jul 30, 2007 | Jul 30, 2007 | Chesapeake Operating, Inc. | Pennington #5HH | 9,000 | 25132064 |
| 642707 | Jul 30, 2007 | Jul 30, 2007 | Chesapeake Operating, Inc. | Allenco #1HH | 9,000 | 25132063 |
| 642705 | Jul 30, 2007 | Jul 30, 2007 | Chesapeake Operating, Inc. | Walker, Flora #3HH | 9,000 | 25132062 |
| 642705Amendment | Jul 30, 2007 | Jul 30, 2007 | Chesapeake Operating, Inc. | Walker, Flora #3HH | 9,000 | 25132062 |
| 642704 | Jul 30, 2007 | Jul 30, 2007 | Chesapeake Operating, Inc. | Walker, Flora #1HH | 9,000 | 25132061 |
| 642703 | Jul 30, 2007 | Jul 30, 2007 | Chesapeake Operating, Inc. | Polley SWD #1 | 14,000 | 25132059 |
| 642702 | Jul 30, 2007 | Jul 30, 2007 | Chesapeake Operating, Inc. | Torres #1HH | 9,000 | 25132060 |
| 642702Amendment | Jul 30, 2007 | Jul 30, 2007 | Chesapeake Operating, Inc. | Torres #1HH | 9,000 | 25132060 |
| 642702Amendment | Jul 30, 2007 | Jul 30, 2007 | Chesapeake Operating, Inc. | Torres #1HH | 9,000 | 25132060 |
| 642618 | Jul 30, 2007 | Jul 30, 2007 | Chesapeake Operating, Inc. | Pennington #6HH | 9,000 | 25132057 |
| 642618Amendment | Jul 30, 2007 | Jul 30, 2007 | Chesapeake Operating, Inc. | Pennington #6HH | 9,000 | 25132057 |
| 642578 | Jul 27, 2007 | Jul 27, 2007 | BP Operating Company, LLC | Brownlee Unit #2HH | 7,500 | 25132056 |
| 642563 | Jul 27, 2007 | Jul 27, 2007 | EOG Resources, Inc. | City of Godley Unit #3HH | 7,800 | 25132055 |
| 642530 | Jul 27, 2007 | Jul 27, 2007 | BP Operating Company, LLC | Brownlee Unit #1HH | 7,800 | 25132054 |
| 642462 | Jul 26, 2007 | Jul 26, 2007 | Devon Energy Production Co, L.P. | Kennon, Alfred #6HH | 9,000 | 25132053 |
| 642455 | Jul 26, 2007 | Jul 26, 2007 | Devon Energy Production Co, L.P. | Kennon, Alfred #7HH | 9,000 | 25132052 |
| 641798 | Jul 26, 2007 | Jul 26, 2007 | Williams Prod. Gulf Coast, L.P. | Wilson, Charles #2HH | 7,800 | 25131990 |
| 642441 | Jul 25, 2007 | Jul 25, 2007 | Devon Energy Production Co, L.P. | Angel, A. T. #4H | 9,000 | 25132051 |
| 642441Amendment | Jul 25, 2007 | Jul 25, 2007 | Devon Energy Production Co, L.P. | Angel, A. T. #4H | 9,000 | 25132051 |
| 642436 | Jul 25, 2007 | Jul 25, 2007 | Devon Energy Production Co, L.P. | Angel, A. T. #3H | 9,000 | 25132050 |
| 642436Amendment | Jul 25, 2007 | Jul 25, 2007 | Devon Energy Production Co, L.P. | Angel, A. T. #3H | 9,000 | 25132050 |
| 642427 | Jul 25, 2007 | Jul 25, 2007 | Devon Energy Production Co, L.P. | Angel, A. T. #2H | 9,000 | 25132049 |
| 642427Amendment | Jul 25, 2007 | Jul 25, 2007 | Devon Energy Production Co, L.P. | Angel, A. T. #2H | 9,000 | 25132049 |
| 642397 | Jul 24, 2007 | Jul 24, 2007 | XTO Energy Inc. | Lewis Unit #B 3HH | 11,000 | 25132048 |
| 642375 | Jul 24, 2007 | Jul 24, 2007 | XTO Energy Inc. | Lewis Unit #B 2HH | 11,000 | 25132047 |
| 642375Amendment | Jul 24, 2007 | Jul 24, 2007 | XTO Energy Inc. | Lewis Unit #B 2HH | 10,000 | 25132047 |
| 642374 | Jul 24, 2007 | Jul 24, 2007 | XTO Energy Inc. | Lewis Unit #B 1HH | 11,000 | 25132058 |
| 642374Amendment | Jul 24, 2007 | Jul 24, 2007 | XTO Energy Inc. | Lewis Unit #B 1HH | 11,000 | 25132058 |
| 642374Amendment | Jul 24, 2007 | Jul 24, 2007 | XTO Energy Inc. | Lewis Unit #B 1HH | 11,000 | 25132058 |
| 642187 | Jul 23, 2007 | Jul 23, 2007 | Chesapeake Operating, Inc. | Little Hoss #J 3HH | 9,000 | 25132032 |
| 642187Amendment | Jul 23, 2007 | Jul 23, 2007 | Chesapeake Operating, Inc. | Little Hoss #J 3HH | 9,000 | 25132032 |
| 642282 | Jul 21, 2007 | Jul 21, 2007 | Devon Energy Production Co, L.P. | LBR Family Partnership #15HH | 9,000 | 25132045 |
| 642282Amendment | Jul 21, 2007 | Jul 21, 2007 | Devon Energy Production Co, L.P. | LBR Family Partnership #15HH | 9,000 | 25132045 |
| 642282Amendment | Jul 21, 2007 | Jul 21, 2007 | Devon Energy Production Co, L.P. | LBR Family Partnership #15HH | 9,000 | 25132045 |
| 642277 | Jul 21, 2007 | Jul 21, 2007 | XTO Energy Inc. | Bisd #B 2HH | 11,000 | 25132044 |
| 642277Amendment | Jul 21, 2007 | Jul 21, 2007 | XTO Energy Inc. | Bisd #B 2HH | 11,000 | 25132044 |
| 642276 | Jul 21, 2007 | Jul 21, 2007 | XTO Energy Inc. | Bisd #A 1HH | 11,000 | 25132043 |
| 642276Amendment | Jul 21, 2007 | Jul 21, 2007 | XTO Energy Inc. | Bisd #A 1HH | 11,000 | 25132043 |
| 642267 | Jul 21, 2007 | Jul 21, 2007 | Devon Energy Production Co, L.P. | LBR Family Partnership #14HH | 9,000 | 25132046 |
| 642259 | Jul 20, 2007 | Jul 20, 2007 | Devon Energy Production Co, L.P. | Glenn, Mary #2H | 9,000 | 25132042 |
| 642245 | Jul 20, 2007 | Jul 20, 2007 | Devon Energy Production Co, L.P. | Pitts, Charles #6HH | 9,000 | 25132041 |
| 642239 | Jul 20, 2007 | Jul 20, 2007 | Devon Energy Production Co, L.P. | Pitts, Charles #5HH | 9,000 | 25132040 |
| 642239Amendment | Jul 20, 2007 | Jul 20, 2007 | Devon Energy Production Co, L.P. | Pitts, Charles #5HH | 9,000 | 25132040 |
| 642235 | Jul 20, 2007 | Jul 20, 2007 | EOG Resources, Inc. | Pressley Unit #7HH | 8,800 | 25132038 |
| 642234 | Jul 19, 2007 | Jul 19, 2007 | EOG Resources, Inc. | Pressley Unit #6HH | 8,800 | 25132037 |
| 642225 | Jul 19, 2007 | Jul 19, 2007 | Devon Energy Production Co, L.P. | Schmidt Management Trust #5H | 9,000 | 25132036 |
| 642220 | Jul 19, 2007 | Jul 19, 2007 | Devon Energy Production Co, L.P. | Schmidt Management Trust #4H | 9,000 | 25132035 |
| 642201 | Jul 19, 2007 | Jul 19, 2007 | EOG Resources, Inc. | Pressley Unit #5HH | 9,000 | 25132034 |
| 642200 | Jul 19, 2007 | Jul 19, 2007 | Devon Energy Production Co, L.P. | Schmidt Management Trust #3H | 9,000 | 25132033 |
| 642186 | Jul 19, 2007 | Jul 19, 2007 | Chesapeake Operating, Inc. | Little Hoss #J 1HH | 9,000 | 25132031 |
| 642091 | Jul 19, 2007 | Jul 19, 2007 | Chesapeake Operating, Inc. | Shaw #5HH | 9,000 | 25132021 |
| 642091Amendment | Jul 19, 2007 | Jul 19, 2007 | Chesapeake Operating, Inc. | Shaw #5HH | 9,000 | 25132021 |
| 642090 | Jul 19, 2007 | Jul 19, 2007 | Chesapeake Operating, Inc. | Shaw #4HH | 9,000 | 25132020 |
| 642090Amendment | Jul 19, 2007 | Jul 19, 2007 | Chesapeake Operating, Inc. | Shaw #4HH | 9,000 | 25132020 |
| 641859 | Jul 19, 2007 | Jul 19, 2007 | EOG Resources, Inc. | Martin Unit #2HH | 8,500 | 25131992 |
| 641722 | Jul 19, 2007 | Jul 19, 2007 | Chesapeake Operating, Inc. | Maclean #1HH | 9,000 | 25132039 |
| 642181 | Jul 18, 2007 | Jul 18, 2007 | EOG Resources, Inc. | Barron Unit #7HH | 8,200 | 25132030 |
| 642178 | Jul 18, 2007 | Jul 18, 2007 | EOG Resources, Inc. | Barron Unit #6HH | 8,200 | 25132029 |
| 642178Amendment | Jul 18, 2007 | Jul 18, 2007 | EOG Resources, Inc. | Barron Unit #6HH | 10,000 | 25132029 |
| 642170 | Jul 18, 2007 | Jul 18, 2007 | EOG Resources, Inc. | Rayburn Unit #10HH | 8,900 | 25132028 |
| 642164 | Jul 18, 2007 | Jul 18, 2007 | EOG Resources, Inc. | Kemp a Unit #13HH | 8,500 | 25132027 |
| 642154 | Jul 17, 2007 | Jul 17, 2007 | EOG Resources, Inc. | Kemp a Unit #12HH | 8,500 | 25132024 |
| 642147 | Jul 17, 2007 | Jul 17, 2007 | Devon Energy Production Co, L.P. | Schmidt Management Trust #2H | 9,000 | 25132026 |
| 642142 | Jul 17, 2007 | Jul 17, 2007 | Paloma Resources, LLC | JHT 'a' Unit #1HH | 9,000 | 25132025 |