| 656672Amendment | Mar 13, 2008 | Mar 13, 2008 | XTO Energy Inc. | Robertson | Snapdragon Gas Unit #139531416 | 15,500 |
| 656653 | Mar 13, 2008 | Mar 13, 2008 | XTO Energy Inc. | Tarrant | Lynn A #5HH43933196 | 11,000 |
| 656653Amendment | Mar 13, 2008 | Mar 13, 2008 | XTO Energy Inc. | Tarrant | Lynn Unit #5HH43933196 | 11,000 |
| 656651 | Mar 13, 2008 | Mar 13, 2008 | XTO Energy Inc. | Tarrant | Lynn A #4HH43933195 | 11,000 |
| 656651Amendment | Mar 13, 2008 | Mar 13, 2008 | XTO Energy Inc. | Tarrant | Lynn Unit #4HH43933195 | 11,000 |
| 656461 | Mar 13, 2008 | Mar 13, 2008 | XTO Energy Inc. | Denton | Fuller Family Unit #1HH12133372 | 11,000 |
| 656461Amendment | Mar 13, 2008 | Mar 13, 2008 | XTO Energy Inc. | Denton | Fuller Family Unit #1HH12133372 | 11,000 |
| 656081 | Mar 13, 2008 | Mar 13, 2008 | XTO Energy Inc. | Colorado | Sheridan Gas Unit #12808932568 | 12,500 |
| 655222 | Mar 13, 2008 | Mar 13, 2008 | XTO Energy Inc. | Ector | Goldsmith, C. A. #181013539474 | 6,700 |
| 655220 | Mar 13, 2008 | Mar 13, 2008 | XTO Energy Inc. | Ector | C.A. Goldsmith #180913539473 | 6,800 |
| 655219 | Mar 13, 2008 | Mar 13, 2008 | XTO Energy Inc. | Ector | Goldsmith, C. A. #180813539472 | 6,700 |
| 655144 | Mar 13, 2008 | Mar 13, 2008 | XTO Energy Inc. | Ector | Goldsmith San Andres Unit #185713539471 | 4,600 |
| 656589 | Mar 12, 2008 | Mar 12, 2008 | XTO Energy Inc. | Limestone | G. H. Longenbaugh Gas Unit No. 1 #729332097 | 13,670 |
| 656576 | Mar 12, 2008 | Mar 12, 2008 | XTO Energy Inc. | Cherokee | Summers Gas Unit No. 1 #207331342 | 12,800 |
| 655741 | Mar 11, 2008 | Mar 11, 2008 | XTO Energy Inc. | Hidalgo | Wheelock Gas Unit O/A #3ST21530343 | 12,350 |
| 656380 | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #I 8HH43933180 | 11,000 |
| 656380Amendment | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #I 8HH43933180 | 11,000 |
| 656380Amendment | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #I 8HH43933180 | 11,000 |
| 656365 | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Tarrant | Howeth Unit #4HH43933181 | 11,000 |
| 656365Amendment | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Tarrant | Howeth Unit #4HH43933181 | 9,500 |
| 656358 | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #I 9HH43933179 | 11,000 |
| 656358Amendment | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #I 9HH43933179 | 11,000 |
| 656358Amendment | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #I 9HH43933179 | 11,000 |
| 656348 | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Erath | Shoebar Ranch #H 4HH14331293 | 10,000 |
| 656348Amendment | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Erath | Shoebar Ranch #H 4HH14331293 | 10,000 |
| 656133 | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Johnson | Warren Unit #4HH25132691 | 12,000 |
| 656133Amendment | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Johnson | Warren Unit #4HH25132691 | 12,000 |
| 656333 | Mar 7, 2008 | Mar 7, 2008 | XTO Energy Inc. | Tarrant | Purselley Unit #3HH43933178 | 11,000 |
| 656333Amendment | Mar 7, 2008 | Mar 7, 2008 | XTO Energy Inc. | Tarrant | Purselley Unit #3HH43933178 | 11,000 |
| 656333Amendment | Mar 7, 2008 | Mar 7, 2008 | XTO Energy Inc. | Tarrant | Purselley Unit #3HH43933178 | 11,000 |
| 655387 | Mar 7, 2008 | Mar 7, 2008 | XTO Energy Inc. | Freestone | L. F. Roberts Gas Unit #4HH16134085 | 16,000 |
| 655387Amendment | Mar 7, 2008 | Mar 7, 2008 | XTO Energy Inc. | Freestone | L. F. Roberts Gas Unit #4HH16134085 | 16,000 |
| 654160 | Mar 7, 2008 | Mar 7, 2008 | XTO Energy Inc. | Cherokee | Chronister Heirs #1107331344 | 12,800 |
| 631662Amendment | Mar 7, 2008 | Mar 7, 2008 | XTO Energy Inc. | Johnson | Shipman Unit #A 1HH25131425 | 10,500 |
| 656191 | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Robertson | Mitchell Gas Unit III #839530448 | 9,700 |
| 656189 | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Limestone | Robert Sims Gas Unit #629332096 | 12,500 |
| 656189Amendment | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Limestone | Robert Sims Gas Unit #629332096 | 12,500 |
| 656188 | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Limestone | Robert Sims Gas Unit #529332095 | 12,500 |
| 656183 | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Limestone | G. H. Longenbaugh Gas Unit No. 1 #429331702 | 13,670 |
| 656150 | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Tarrant | Kluge Unit #2HH43933173 | 11,000 |
| 656150Amendment | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Tarrant | Kluge Unit #2HH43933173 | 11,000 |
| 656150Amendment | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Tarrant | Kluge Unit #2HH43933173 | 11,000 |
| 656135 | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Johnson | Warren Unit #5HH25132694 | 12,000 |
| 656135Amendment | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Johnson | Warren Unit #5HH25132694 | 12,000 |
| 656130 | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Johnson | Warren Unit #3HH25132692 | 12,000 |
| 656130Amendment | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Johnson | Warren Unit #3HH25132692 | 12,000 |
| 656094 | Mar 5, 2008 | Mar 5, 2008 | XTO Energy Inc. | Freestone | L.F. Roberts Gas Unit #5HH16134541 | 16,000 |
| 656079 | Mar 5, 2008 | Mar 5, 2008 | XTO Energy Inc. | Ector | Connell, W. E. NCT-3 #5813501439 | 8,890 |
| 656061 | Mar 5, 2008 | Mar 5, 2008 | XTO Energy Inc. | Goliad | Crews #417534072 | 14,500 |
| 656061Amendment | Mar 5, 2008 | Mar 5, 2008 | XTO Energy Inc. | Goliad | Crews #417534072 | 14,500 |
| 656058 | Mar 5, 2008 | Mar 5, 2008 | XTO Energy Inc. | Goliad | Crews #317534071 | 14,500 |
| 656048 | Mar 5, 2008 | Mar 5, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #H 10HH43933167 | 11,000 |
| 656048Amendment | Mar 5, 2008 | Mar 5, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #H 10HH43933167 | 11,000 |
| 656047 | Mar 5, 2008 | Mar 5, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #H 9HH43933166 | 11,000 |
| 656047Amendment | Mar 5, 2008 | Mar 5, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #H 9HH43933166 | 11,000 |
| 656047Amendment | Mar 5, 2008 | Mar 5, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #H 9HH43933166 | 11,000 |
| 654040 | Mar 5, 2008 | Mar 5, 2008 | XTO Energy Inc. | Limestone | Chandler Gas Unit No. 1 #229331035 | 9,900 |
| 655976 | Mar 4, 2008 | Mar 4, 2008 | XTO Energy Inc. | Freestone | T. H. McWatters #3316134093 | 13,600 |
| 655913 | Mar 4, 2008 | Mar 4, 2008 | XTO Energy Inc. | Parker | Blasingame B Unit #2HH36734682 | 11,500 |
| 655913Amendment | Mar 4, 2008 | Mar 4, 2008 | XTO Energy Inc. | Parker | Blasingame B Unit #2HH36734682 | 11,500 |
| 655913Amendment | Mar 4, 2008 | Mar 4, 2008 | XTO Energy Inc. | Parker | Blasingame B Unit #2HH36734682 | 11,500 |
| 648202Amendment | Mar 4, 2008 | Mar 4, 2008 | XTO Energy Inc. | Limestone | S. J. Harlow Gas Unit #1029332055 | 13,200 |
| 648202Amendment | Mar 4, 2008 | Mar 4, 2008 | XTO Energy Inc. | Limestone | S. J. Harlow Gas Unit #1029332055 | 13,200 |
| 625538Amendment | Mar 3, 2008 | Mar 3, 2008 | XTO Energy Inc. | Tarrant | Jet Guns Unit #2HH43931755 | 12,000 |
| 625538Amendment | Mar 3, 2008 | Mar 3, 2008 | XTO Energy Inc. | Tarrant | Jet Guns Unit #2HH43931755 | 12,000 |
| 656288 | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Shelby | Brown #141931265 | 14,000 |
| 655851 | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Gee Unit #6HH43933152 | 11,000 |
| 655851Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Gee Unit #6HH43933152 | 11,000 |
| 655851Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Gee Unit #6HH43933152 | 11,000 |
| 655850 | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Gee Unit #5HH43933148 | 11,000 |
| 655850Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Gee Unit #5HH43933148 | 11,000 |
| 655850Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Gee Unit #5HH43933148 | 11,000 |
| 655849 | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Gee Unit #4HH43933147 | 11,000 |
| 655849Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Gee Unit #4HH43933147 | 11,000 |
| 655849Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Gee Unit #4HH43933147 | 11,000 |
| 655848 | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Gee Unit #3HH43933146 | 11,000 |
| 655848Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Gee Unit #3HH43933146 | 11,000 |
| 655848Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Gee Unit #3HH43933146 | 11,000 |
| 655847 | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Gee Unit #2HH43933145 | 11,000 |
| 655847Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Gee Unit #2HH43933145 | 11,000 |
| 655847Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Gee Unit #2HH43933145 | 11,000 |
| 655845 | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Gee Unit #1HH43933151 | 11,000 |
| 655845Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Gee Unit #1HH43933151 | 11,000 |
| 655845Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Gee Unit #1HH43933151 | 11,000 |
| 655845Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Gee Unit #1HH43933151 | 11,000 |
| 655844 | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Unit #B 1HH43933144 | 11,000 |
| 655844Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Joe Pool Barksdale Unit #B 1HH43933144 | 11,000 |
| 655805 | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Limestone | Sand Branch Gas Unit #329332094 | 14,000 |
| 655805Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Limestone | Sand Branch Gas Unit #329332094 | 14,000 |
| 655801 | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Freestone | Wynne Gas Unit No. 1 #216134090 | 11,300 |
| 655760 | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Freestone | Reed "E" Gas Unit #1616134089 | 15,000 |
| 655736 | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Tarrant | Federal B North #4HH43933149 | 11,000 |
| 652269 | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Shelby | Thomas #141931249 | 13,500 |
| 624640Amendment | Feb 28, 2008 | Feb 28, 2008 | XTO Energy Inc. | Parker | Wickizer Unit #A 1HH36734142 | 10,000 |
| 655644 | Feb 27, 2008 | Feb 27, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #H 5HH43933133 | 11,000 |
| 655644Amendment | Feb 27, 2008 | Feb 27, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #H 5HH43933133 | 11,000 |
| 655644Amendment | Feb 27, 2008 | Feb 27, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #H 5HH43933133 | 11,000 |
| 655643 | Feb 27, 2008 | Feb 27, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #H 4HH43933132 | 11,000 |
| 655643Amendment | Feb 27, 2008 | Feb 27, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #H 4HH43933132 | 11,000 |
| 655643Amendment | Feb 27, 2008 | Feb 27, 2008 | XTO Energy Inc. | Tarrant | Indian Creek #H 4HH43933132 | 11,000 |