| 637199 | Apr 23, 2007 | Apr 23, 2007 | Arrington,david H. Oil & Gas,inc | Mickey Finn #1HH | 6,200 | 22131356 |
| 633964 | Apr 18, 2007 | Apr 18, 2007 | Encana Oil & Gas(usa) Inc. | Stank Unit #3HH | 9,000 | 22131354 |
| 636969 | Apr 17, 2007 | Apr 17, 2007 | Quicksilver Resources Inc. | Acton Meadows #1HH | 6,400 | 22131355 |
| 635043 | Apr 16, 2007 | Apr 16, 2007 | Encana Oil & Gas(usa) Inc. | Broyles Unit A #3HH | 9,000 | 22131315 |
| 635041 | Apr 16, 2007 | Apr 16, 2007 | Encana Oil & Gas(usa) Inc. | Broyles Unit A #2HH | 9,000 | 22131314 |
| 636786 | Apr 14, 2007 | Apr 14, 2007 | Quicksilver Resources Inc. | Spuds Unit #1HH | 6,400 | 22131353 |
| 636786Amendment | Apr 14, 2007 | Apr 14, 2007 | Quicksilver Resources Inc. | Spuds Unit #1HH | 6,400 | 22131353 |
| 636755 | Apr 14, 2007 | Apr 14, 2007 | XTO Energy Inc. | Barnes Trust et al Unit #1HH | 11,000 | 22131352 |
| 636563 | Apr 13, 2007 | Apr 13, 2007 | Encana Oil & Gas(usa) Inc. | Slocum #2HH | 9,000 | 22131349 |
| 636609 | Apr 12, 2007 | Apr 12, 2007 | Encana Oil & Gas(usa) Inc. | Slocum #4HH | 9,000 | 22131351 |
| 636609Amendment | Apr 12, 2007 | Apr 12, 2007 | Encana Oil & Gas(usa) Inc. | Slocum #4HH | 9,000 | 22131351 |
| 636581 | Apr 12, 2007 | Apr 12, 2007 | Encana Oil & Gas(usa) Inc. | Slocum #3HH | 9,000 | 22131350 |
| 636457 | Apr 11, 2007 | Apr 11, 2007 | Quicksilver Resources Inc. | Radar #1HH | 6,400 | 22131348 |
| 633958 | Apr 9, 2007 | Apr 9, 2007 | Encana Oil & Gas(usa) Inc. | Stank Unit #2HH | 9,000 | 22131323 |
| 636185 | Apr 5, 2007 | Apr 5, 2007 | Quicksilver Resources Inc. | Pallmeyer Unit B #4HH | 6,400 | 22131347 |
| 636084 | Apr 3, 2007 | Apr 3, 2007 | Burlington Resources O & G Co LP | Randle #6HH | 9,000 | 22131346 |
| 636084Amendment | Apr 3, 2007 | Apr 3, 2007 | Burlington Resources O & G Co LP | Randle #6HH | 9,000 | 22131346 |
| 636082 | Apr 3, 2007 | Apr 3, 2007 | Burlington Resources O & G Co LP | Randle #5HH | 9,000 | 22131345 |
| 636082Amendment | Apr 3, 2007 | Apr 3, 2007 | Burlington Resources O & G Co LP | Randle #5HH | 9,000 | 22131345 |
| 636078 | Apr 3, 2007 | Apr 3, 2007 | Burlington Resources O & G Co LP | Randle #4HH | 9,000 | 22131344 |
| 636078Amendment | Apr 3, 2007 | Apr 3, 2007 | Burlington Resources O & G Co LP | Randle #4HH | 9,000 | 22131344 |
| 636075 | Apr 3, 2007 | Apr 3, 2007 | Burlington Resources O & G Co LP | Randle #3HH | 9,000 | 22131343 |
| 635729 | Mar 29, 2007 | Mar 29, 2007 | Quicksilver Resources Inc. | Honeycomb Unit #4HH | 6,400 | 22131342 |
| 635725 | Mar 29, 2007 | Mar 29, 2007 | Quicksilver Resources Inc. | Honeycomb Unit #3HH | 6,400 | 22131341 |
| 635724 | Mar 29, 2007 | Mar 29, 2007 | Quicksilver Resources Inc. | Honeycomb Unit #2HH | 6,400 | 22131340 |
| 635612 | Mar 28, 2007 | Mar 28, 2007 | Quicksilver Resources Inc. | Noel #3HH | 6,400 | 22131336 |
| 635612Amendment | Mar 28, 2007 | Mar 28, 2007 | Quicksilver Resources Inc. | Noel #3HH | 6,400 | 22131336 |
| 635609 | Mar 28, 2007 | Mar 28, 2007 | Quicksilver Resources Inc. | Noel #2HH | 6,400 | 22131335 |
| 635609Amendment | Mar 28, 2007 | Mar 28, 2007 | Quicksilver Resources Inc. | Noel #2HH | 6,400 | 22131335 |
| 635598 | Mar 28, 2007 | Mar 28, 2007 | Quicksilver Resources Inc. | Noel #1HH | 6,400 | 22131334 |
| 635598Amendment | Mar 28, 2007 | Mar 28, 2007 | Quicksilver Resources Inc. | Noel #1HH | 6,400 | 22131334 |
| 635596 | Mar 28, 2007 | Mar 28, 2007 | Quicksilver Resources Inc. | K.R. Mixer Unit #4HH | 6,400 | 22131337 |
| 635578 | Mar 28, 2007 | Mar 28, 2007 | Quicksilver Resources Inc. | K. R. Mixer Unit #3HH | 6,400 | 22131333 |
| 635575 | Mar 28, 2007 | Mar 28, 2007 | Quicksilver Resources Inc. | K. R. Mixer Unit #2HH | 6,400 | 22131332 |
| 635575Amendment | Mar 28, 2007 | Mar 28, 2007 | Quicksilver Resources Inc. | K. R. Mixer Unit #2HH | 6,400 | 22131332 |
| 635512 | Mar 28, 2007 | Mar 28, 2007 | Quicksilver Resources Inc. | C. R. Putteet Unit #7HH | 6,400 | 22131328 |
| 634242 | Mar 28, 2007 | Mar 28, 2007 | Range Production Company | Mitchell Ranch #24HH | 7,000 | 22131339 |
| 634242Amendment | Mar 28, 2007 | Mar 28, 2007 | Range Production Company | Mitchell Ranch #24HH | 9,000 | 22131339 |
| 634238 | Mar 28, 2007 | Mar 28, 2007 | Range Production Company | Mitchell Ranch #23HH | 7,000 | 22131338 |
| 634238Amendment | Mar 28, 2007 | Mar 28, 2007 | Range Production Company | Mitchell Ranch #23HH | 9,000 | 22131338 |
| 635561 | Mar 27, 2007 | Mar 27, 2007 | Quicksilver Resources Inc. | Putteet Hill Unit #2HH | 6,600 | 22131331 |
| 635559 | Mar 27, 2007 | Mar 27, 2007 | Quicksilver Resources Inc. | Putteet Hill Unit #1HH | 6,600 | 22131330 |
| 635451 | Mar 27, 2007 | Mar 27, 2007 | Quicksilver Resources Inc. | C. R. Putteet Unit #3HH | 6,400 | 22131326 |
| 635040 | Mar 27, 2007 | Mar 27, 2007 | Encana Oil & Gas(usa) Inc. | Broyles Unit A #1HH | 9,000 | 22131313 |
| 635040Amendment | Mar 27, 2007 | Mar 27, 2007 | EOG Resources, Inc. | Broyles Unit A #1HH | 10,000 | 22131313 |
| 635516 | Mar 26, 2007 | Mar 26, 2007 | Quicksilver Resources Inc. | C. R. Putteet Unit #5HH | 6,400 | 22131329 |
| 635504 | Mar 26, 2007 | Mar 26, 2007 | Quicksilver Resources Inc. | C. R. Putteet Unit #6HH | 6,400 | 22131327 |
| 635454 | Mar 26, 2007 | Mar 26, 2007 | Quicksilver Resources Inc. | C. R. Putteet Unit #4HH | 6,400 | 22131325 |
| 635397 | Mar 26, 2007 | Mar 26, 2007 | Quicksilver Resources Inc. | C. R. Putteet Unit #2HH | 6,400 | 22131324 |
| 635288 | Mar 26, 2007 | Mar 26, 2007 | Quicksilver Resources Inc. | K. R. Mixer Unit #1HH | 6,400 | 22131321 |
| 635288Amendment | Mar 26, 2007 | Mar 26, 2007 | Quicksilver Resources Inc. | K. R. Mixer Unit #1HH | 6,400 | 22131321 |
| 635284 | Mar 26, 2007 | Mar 26, 2007 | Quicksilver Resources Inc. | Big Rock Candy Mountain #3HH | 6,400 | 22131319 |
| 635281 | Mar 23, 2007 | Mar 23, 2007 | Quicksilver Resources Inc. | Big Rock Candy Mountain #4HH | 6,400 | 22131318 |
| 635286 | Mar 22, 2007 | Mar 22, 2007 | Quicksilver Resources Inc. | Big Rock Candy Mountain #2HH | 6,400 | 22131320 |
| 635276 | Mar 22, 2007 | Mar 22, 2007 | Quicksilver Resources Inc. | Hummer Unit #2HH | 6,400 | 22131322 |
| 635247 | Mar 22, 2007 | Mar 22, 2007 | Devon Energy Production Co, L.P. | Brite #1HH | 9,000 | 22131317 |
| 635222 | Mar 22, 2007 | Mar 22, 2007 | Quicksilver Resources Inc. | Hummer Unit #1HH | 6,400 | 22131316 |
| 635222Amendment | Mar 22, 2007 | Mar 22, 2007 | Quicksilver Resources Inc. | Hummer Unit #1HH | 6,400 | 22131316 |
| 634848 | Mar 19, 2007 | Mar 19, 2007 | Quicksilver Resources Inc. | Pallmeyer Unit B #3HH | 6,400 | 22131310 |
| 634961 | Mar 16, 2007 | Mar 16, 2007 | Encana Oil & Gas(usa) Inc. | Stewart Unit #2HH | 9,000 | 22131312 |
| 634801 | Mar 16, 2007 | Mar 16, 2007 | Quicksilver Resources Inc. | Lanham Unit #1HH | 6,400 | 22131307 |
| 634852 | Mar 14, 2007 | Mar 14, 2007 | Quicksilver Resources Inc. | C. R. Putteet Unit #1HH | 6,400 | 22131311 |
| 634841 | Mar 14, 2007 | Mar 14, 2007 | Quicksilver Resources Inc. | Pallmeyer Unit B #2HH | 6,400 | 22131309 |
| 634806 | Mar 14, 2007 | Mar 14, 2007 | Quicksilver Resources Inc. | Lanham Unit #2HH | 6,400 | 22131308 |
| 634695 | Mar 13, 2007 | Mar 13, 2007 | Quicksilver Resources Inc. | Big Rock Candy Mountain #1HH | 6,400 | 22131306 |
| 634639 | Mar 12, 2007 | Mar 12, 2007 | Chesapeake Operating, Inc. | Little Hoss #D 6HH | 9,000 | 22131304 |
| 634638 | Mar 12, 2007 | Mar 12, 2007 | Chesapeake Operating, Inc. | Little Hoss #D 5HH | 9,000 | 22131305 |
| 634618 | Mar 9, 2007 | Mar 9, 2007 | XTO Energy Inc. | Charo #A 1HH | 10,000 | 22131303 |
| 634423 | Mar 8, 2007 | Mar 8, 2007 | Quicksilver Resources Inc. | Sugar Crisp #4HH | 6,400 | 22131302 |
| 634413 | Mar 8, 2007 | Mar 8, 2007 | Quicksilver Resources Inc. | Sugar Crisp #3HH | 6,400 | 22131301 |
| 634371 | Mar 7, 2007 | Mar 7, 2007 | Burlington Resources O & G Co LP | Randle #7HH | 9,000 | 22131300 |
| 634370 | Mar 7, 2007 | Mar 7, 2007 | Burlington Resources O & G Co LP | Randle #2HH | 9,000 | 22131299 |
| 634361 | Mar 7, 2007 | Mar 7, 2007 | Burlington Resources O & G Co LP | Kidd E Unit #7HH | 9,000 | 22131298 |
| 634361Amendment | Mar 7, 2007 | Mar 7, 2007 | Burlington Resources O & G Co LP | Kidd E Unit #7HH | 9,000 | 22131298 |
| 634331 | Mar 7, 2007 | Mar 7, 2007 | Burlington Resources O & G Co LP | Kidd F Unit #8HH | 9,000 | 22131296 |
| 634244 | Mar 5, 2007 | Mar 5, 2007 | Range Production Company | Mitchell Ranch #25HH | 7,000 | 22131297 |
| 634244Amendment | Mar 5, 2007 | Mar 5, 2007 | Range Production Company | Mitchell Ranch #25HH | 9,000 | 22131297 |
| 634217 | Mar 2, 2007 | Mar 2, 2007 | Quicksilver Resources Inc. | Honeycomb Unit #1HH | 6,400 | 22131295 |
| 633924 | Feb 26, 2007 | Feb 26, 2007 | Quicksilver Resources Inc. | Campos Unit B #4HH | 6,400 | 22131294 |
| 633912 | Feb 26, 2007 | Feb 26, 2007 | Quicksilver Resources Inc. | Campos Unit A #4HH | 6,400 | 22131292 |
| 633902 | Feb 26, 2007 | Feb 26, 2007 | Quicksilver Resources Inc. | Campos Unit A #3HH | 6,400 | 22131293 |
| 633901 | Feb 26, 2007 | Feb 26, 2007 | Quicksilver Resources Inc. | Sugar Crisp #5HH | 6,400 | 22131291 |
| 633836 | Feb 23, 2007 | Feb 23, 2007 | Arrington,david H. Oil & Gas,inc | Cutwing Parachute Emerger #3HH | 6,300 | 22131290 |
| 633339 | Feb 15, 2007 | Feb 15, 2007 | Quicksilver Resources Inc. | Campos B Unit #3HH | 6,400 | 22131288 |
| 633265 | Feb 15, 2007 | Feb 15, 2007 | XTO Energy Inc. | Wann #5HH | 10,000 | 22131286 |
| 633265Amendment | Feb 15, 2007 | Feb 15, 2007 | XTO Energy Inc. | Wann #5HH | 10,000 | 22131286 |
| 633374 | Feb 14, 2007 | Feb 14, 2007 | Proco Operating Co., Inc. | Evans-Overstreet #1 | 3,550 | 22131289 |
| 633374Amendment | Feb 14, 2007 | Feb 14, 2007 | Proco Operating Co., Inc. | Evans-Overstreet #1 | 3,550 | 22131289 |
| 633374Amendment | Feb 14, 2007 | Feb 14, 2007 | Proco Operating Co., Inc. | Evans-Overstreet #1 | 6,000 | 22131289 |
| 633335 | Feb 14, 2007 | Feb 14, 2007 | Quicksilver Resources Inc. | Pallmeyer A #3HH | 6,400 | 22131287 |
| 632620 | Feb 10, 2007 | Feb 10, 2007 | Encana Oil & Gas(usa) Inc. | Broyles #5HH | 9,000 | 22131285 |
| 632613 | Feb 10, 2007 | Feb 10, 2007 | Encana Oil & Gas(usa) Inc. | Broyles #4HH | 9,000 | 22131284 |
| 632595 | Feb 10, 2007 | Feb 10, 2007 | Encana Oil & Gas(usa) Inc. | Broyles #3HH | 9,000 | 22131283 |
| 632992 | Feb 7, 2007 | Feb 7, 2007 | Devon Energy Production Co, L.P. | Seymour West #1HH | 9,000 | 22131282 |
| 632953 | Feb 6, 2007 | Feb 6, 2007 | Quicksilver Resources Inc. | Bubbs Unit #7HH | 6,600 | 22131281 |
| 632951 | Feb 6, 2007 | Feb 6, 2007 | Quicksilver Resources Inc. | Bubbs Unit #5HH | 6,400 | 22131280 |
| 632863 | Feb 5, 2007 | Feb 5, 2007 | Quicksilver Resources Inc. | Bubbs Unit #6HH | 6,600 | 22131279 |
| 632860 | Feb 5, 2007 | Feb 5, 2007 | Quicksilver Resources Inc. | Bubbs Unit #4HH | 6,400 | 22131278 |
| 632860Amendment | Feb 5, 2007 | Feb 5, 2007 | Quicksilver Resources Inc. | Bubbs Unit #4HH | 6,400 | 22131278 |
| 632858 | Feb 5, 2007 | Feb 5, 2007 | Quicksilver Resources Inc. | Bubbs Unit #3HH | 6,400 | 22131277 |