| 653655 | Jan 31, 2008 | Jan 31, 2008 | Quicksilver Resources Inc. | Station Branch Ranch Unit #10HH | 6,600 | 22131577 |
| 653654 | Jan 31, 2008 | Jan 31, 2008 | Quicksilver Resources Inc. | Station Branch Ranch Unit #9HH | 6,600 | 22131578 |
| 653652 | Jan 31, 2008 | Jan 31, 2008 | Quicksilver Resources Inc. | Station Branch Ranch Unit #8HH | 6,600 | 22131579 |
| 653651 | Jan 31, 2008 | Jan 31, 2008 | Quicksilver Resources Inc. | Station Branch Ranch Unit #7HH | 6,600 | 22131580 |
| 653650 | Jan 31, 2008 | Jan 31, 2008 | Quicksilver Resources Inc. | Station Branch Ranch Unit #6HH | 6,600 | 22131581 |
| 653645 | Jan 31, 2008 | Jan 31, 2008 | Quicksilver Resources Inc. | Station Branch Ranch Unit #5HH | 6,600 | 22131582 |
| 653641 | Jan 31, 2008 | Jan 31, 2008 | Quicksilver Resources Inc. | Station Branch Ranch Unit #4HH | 6,600 | 22131583 |
| 653639 | Jan 31, 2008 | Jan 31, 2008 | Quicksilver Resources Inc. | Station Branch Ranch Unit #3HH | 6,600 | 22131574 |
| 653637 | Jan 31, 2008 | Jan 31, 2008 | Quicksilver Resources Inc. | Station Branch Ranch Unit #2HH | 6,600 | 22131573 |
| 653633 | Jan 30, 2008 | Jan 30, 2008 | Quicksilver Resources Inc. | Station Branch Ranch SWD #1 | 9,500 | 22131571 |
| 653294 | Jan 28, 2008 | Jan 28, 2008 | Burlington Resources O & G Co LP | Crowell B Unit #2HH | 9,000 | 22131570 |
| 653635 | Jan 25, 2008 | Jan 25, 2008 | Quicksilver Resources Inc. | Station Branch Ranch Unit #1HH | 6,600 | 22131572 |
| 653129 | Jan 23, 2008 | Jan 23, 2008 | EOG Resources, Inc. | Versfelt Unit #1HH | 10,000 | 22131569 |
| 653065 | Jan 23, 2008 | Jan 23, 2008 | EOG Resources, Inc. | Big L Ranch #6HH | 5,700 | 22131568 |
| 652415 | Jan 10, 2008 | Jan 10, 2008 | EOG Resources, Inc. | Houston Ranch #20 | 6,200 | 22131567 |
| 651842 | Dec 31, 2007 | Dec 31, 2007 | Encana Oil & Gas(usa) Inc. | Slocum #6HH | 9,000 | 22131566 |
| 651842Amendment | Dec 31, 2007 | Dec 31, 2007 | Encana Oil & Gas(usa) Inc. | Slocum #6HH | 9,000 | 22131566 |
| 651589 | Dec 20, 2007 | Dec 20, 2007 | EOG Resources, Inc. | Black Ranch #A 7 | 6,400 | 22131564 |
| 651588 | Dec 20, 2007 | Dec 20, 2007 | EOG Resources, Inc. | Black Ranch #A 5HH | 5,800 | 22131565 |
| 649446Amendment | Dec 20, 2007 | Dec 20, 2007 | EOG Resources, Inc. | Black Ranch #A 2HH | 6,000 | 22131540 |
| 651410 | Dec 19, 2007 | Dec 19, 2007 | EOG Resources, Inc. | Black Ranch #A 6HH | 6,000 | 22131563 |
| 651101 | Dec 17, 2007 | Dec 17, 2007 | EOG Resources, Inc. | Black Ranch #A 4HH | 5,800 | 22131562 |
| 651101Amendment | Dec 17, 2007 | Dec 17, 2007 | EOG Resources, Inc. | Black Ranch #A 4HH | 6,000 | 22131562 |
| 649413 | Dec 13, 2007 | Dec 13, 2007 | Range Production Company | Mitchell Ranch #33HH | 9,000 | 22131561 |
| 650613 | Dec 8, 2007 | Dec 8, 2007 | XTO Energy Inc. | Killough #1HH | 10,000 | 22131560 |
| 650613Amendment | Dec 8, 2007 | Dec 8, 2007 | XTO Energy Inc. | Killough Unit #1HH | 10,000 | 22131560 |
| 650557 | Dec 8, 2007 | Dec 8, 2007 | Quicksilver Resources Inc. | Williams-Finn Unit #5HH | 9,000 | 22131559 |
| 650254 | Dec 5, 2007 | Dec 5, 2007 | Burlington Resources O & G Co LP | Green-Moore Unit #1HH | 9,000 | 22131558 |
| 650253 | Dec 4, 2007 | Dec 4, 2007 | Burlington Resources O & G Co LP | Green-Moore Unit #2HH | 9,000 | 22131557 |
| 650187 | Nov 30, 2007 | Nov 30, 2007 | Triad Exploration, Ltd. | Triad-Cooper #2HH | 9,000 | 22131556 |
| 649761 | Nov 21, 2007 | Nov 21, 2007 | Quicksilver Resources Inc. | Deborah Lou Unit #9HH | 9,000 | 22131554 |
| 649761Amendment | Nov 21, 2007 | Nov 21, 2007 | Quicksilver Resources Inc. | Deborah Lou Unit #9HH | 9,000 | 22131554 |
| 649760 | Nov 21, 2007 | Nov 21, 2007 | Quicksilver Resources Inc. | Deborah Lou Unit #8HH | 9,000 | 22131553 |
| 649760Amendment | Nov 21, 2007 | Nov 21, 2007 | Quicksilver Resources Inc. | Deborah Lou Unit #8HH | 9,000 | 22131553 |
| 649759 | Nov 21, 2007 | Nov 21, 2007 | Quicksilver Resources Inc. | Deborah Lou Unit #7HH | 9,000 | 22131552 |
| 649759Amendment | Nov 21, 2007 | Nov 21, 2007 | Quicksilver Resources Inc. | Deborah Lou Unit #7HH | 9,000 | 22131552 |
| 649757 | Nov 21, 2007 | Nov 21, 2007 | Quicksilver Resources Inc. | Deborah Lou Unit #6HH | 9,000 | 22131550 |
| 649755 | Nov 21, 2007 | Nov 21, 2007 | Quicksilver Resources Inc. | Deborah Lou Unit #5HH | 9,000 | 22131551 |
| 649753 | Nov 21, 2007 | Nov 21, 2007 | Quicksilver Resources Inc. | Deborah Lou Unit #4HH | 9,000 | 22131555 |
| 649751 | Nov 21, 2007 | Nov 21, 2007 | Quicksilver Resources Inc. | Deborah Lou Unit #3HH | 9,000 | 22131549 |
| 649751Amendment | Nov 21, 2007 | Nov 21, 2007 | Quicksilver Resources Inc. | Deborah Lou Unit #3HH | 9,000 | 22131549 |
| 649750 | Nov 21, 2007 | Nov 21, 2007 | Quicksilver Resources Inc. | Deborah Lou Unit #2HH | 9,000 | 22131548 |
| 649748 | Nov 21, 2007 | Nov 21, 2007 | Quicksilver Resources Inc. | Deborah Lou Unit #1HH | 9,000 | 22131547 |
| 649492 | Nov 19, 2007 | Nov 19, 2007 | Quicksilver Resources Inc. | Berlin Unit #7HH | 9,000 | 22131546 |
| 649448 | Nov 19, 2007 | Nov 19, 2007 | EOG Resources, Inc. | Black Ranch #A 3HH | 6,000 | 22131541 |
| 649448Amendment | Nov 19, 2007 | Nov 19, 2007 | EOG Resources, Inc. | Black Ranch #A 3HH | 6,000 | 22131541 |
| 649448Amendment | Nov 19, 2007 | Nov 19, 2007 | EOG Resources, Inc. | Black Ranch #A 3HH | 6,000 | 22131541 |
| 649446 | Nov 19, 2007 | Nov 19, 2007 | EOG Resources, Inc. | Black Ranch #A 2HH | 6,000 | 22131540 |
| 649489 | Nov 16, 2007 | Nov 16, 2007 | Quicksilver Resources Inc. | Berlin Unit #6HH | 9,000 | 22131545 |
| 649489Amendment | Nov 16, 2007 | Nov 16, 2007 | Quicksilver Resources Inc. | Berlin Unit #6HH | 9,000 | 22131545 |
| 649486 | Nov 16, 2007 | Nov 16, 2007 | Quicksilver Resources Inc. | Berlin Unit #5HH | 9,000 | 22131544 |
| 649486Amendment | Nov 16, 2007 | Nov 16, 2007 | Quicksilver Resources Inc. | Berlin Unit #5HH | 9,000 | 22131544 |
| 649485 | Nov 16, 2007 | Nov 16, 2007 | Quicksilver Resources Inc. | Berlin Unit #4HH | 9,000 | 22131543 |
| 649485Amendment | Nov 16, 2007 | Nov 16, 2007 | Quicksilver Resources Inc. | Berlin Unit #4HH | 9,000 | 22131543 |
| 649479 | Nov 16, 2007 | Nov 16, 2007 | Quicksilver Resources Inc. | Berlin Unit #2HH | 9,000 | 22131542 |
| 649071 | Nov 14, 2007 | Nov 14, 2007 | Quicksilver Resources Inc. | Berlin Unit #3HH | 9,000 | 22131539 |
| 649071Amendment | Nov 14, 2007 | Nov 14, 2007 | Quicksilver Resources Inc. | Berlin Unit #3HH | 9,000 | 22131539 |
| 649060 | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #9HH | 9,000 | 22131538 |
| 649058 | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #8HH | 9,000 | 22131537 |
| 649057 | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #7HH | 9,000 | 22131536 |
| 649057Amendment | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #7HH | 9,000 | 22131536 |
| 649056 | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #6HH | 9,000 | 22131535 |
| 649056Amendment | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #6HH | 9,000 | 22131535 |
| 649054 | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #5HH | 9,000 | 22131534 |
| 649054Amendment | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #5HH | 9,000 | 22131534 |
| 649031 | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #4HH | 9,000 | 22131531 |
| 649031Amendment | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #4HH | 9,000 | 22131531 |
| 649030 | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #3HH | 9,000 | 22131532 |
| 649030Amendment | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #3HH | 9,000 | 22131532 |
| 649029 | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #2HH | 9,000 | 22131533 |
| 649029Amendment | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #2HH | 9,000 | 22131533 |
| 649015 | Nov 12, 2007 | Nov 12, 2007 | Quicksilver Resources Inc. | Hoover Unit #1HH | 9,000 | 22131530 |
| 648841 | Nov 7, 2007 | Nov 7, 2007 | Quicksilver Resources Inc. | Radar #3HH | 9,000 | 22131529 |
| 648841Amendment | Nov 7, 2007 | Nov 7, 2007 | Quicksilver Resources Inc. | Radar #3HH | 9,000 | 22131529 |
| 648772 | Nov 6, 2007 | Nov 6, 2007 | EOG Resources, Inc. | Big L Ranch #5HH | 5,700 | 22131528 |
| 648629 | Nov 6, 2007 | Nov 6, 2007 | Quicksilver Resources Inc. | Berlin Unit #1HH | 9,000 | 22131527 |
| 648586 | Nov 5, 2007 | Nov 5, 2007 | Range Production Company | Mitchell Ranch #27HH | 9,000 | 22131526 |
| 648510 | Nov 5, 2007 | Nov 5, 2007 | Burlington Resources O & G Co LP | Killough #2HH | 9,000 | 22131525 |
| 648490 | Oct 31, 2007 | Oct 31, 2007 | Burlington Resources O & G Co LP | Killough #1HH | 9,000 | 22131524 |
| 648230 | Oct 26, 2007 | Oct 26, 2007 | EOG Resources, Inc. | Big L Ranch #4 | 6,000 | 22131523 |
| 648194 | Oct 25, 2007 | Oct 25, 2007 | Quicksilver Resources Inc. | Sandel Unit #6HH | 9,000 | 22131522 |
| 648194Amendment | Oct 25, 2007 | Oct 25, 2007 | Quicksilver Resources Inc. | Price Unit #6HH | 9,000 | 22131522 |
| 648190 | Oct 25, 2007 | Oct 25, 2007 | Quicksilver Resources Inc. | Sandel Unit #10HH | 9,000 | 22131521 |
| 648190Amendment | Oct 25, 2007 | Oct 25, 2007 | Quicksilver Resources Inc. | Price Unit #10HH | 9,000 | 22131521 |
| 648188 | Oct 25, 2007 | Oct 25, 2007 | Quicksilver Resources Inc. | Sandel Unit #9HH | 9,000 | 22131520 |
| 648188Amendment | Oct 25, 2007 | Oct 25, 2007 | Quicksilver Resources Inc. | Price Unit #9HH | 9,000 | 22131520 |
| 648186 | Oct 25, 2007 | Oct 25, 2007 | Quicksilver Resources Inc. | Sandel Unit #8HH | 9,000 | 22131519 |
| 648184 | Oct 25, 2007 | Oct 25, 2007 | Quicksilver Resources Inc. | Sandel Unit #7HH | 9,000 | 22131518 |
| 648184Amendment | Oct 25, 2007 | Oct 25, 2007 | Quicksilver Resources Inc. | Price Unit #7HH | 9,000 | 22131518 |
| 648144 | Oct 24, 2007 | Oct 24, 2007 | Quicksilver Resources Inc. | Sandel Unit #5HH | 9,000 | 22131516 |
| 648144Amendment | Oct 24, 2007 | Oct 24, 2007 | Quicksilver Resources Inc. | Price Unit #5HH | 9,000 | 22131516 |
| 648141 | Oct 24, 2007 | Oct 24, 2007 | Quicksilver Resources Inc. | Sandel Unit #4HH | 9,000 | 22131515 |
| 648141Amendment | Oct 24, 2007 | Oct 24, 2007 | Quicksilver Resources Inc. | Price Unit #4HH | 9,000 | 22131515 |
| 648140 | Oct 24, 2007 | Oct 24, 2007 | Quicksilver Resources Inc. | Sandel Unit #3HH | 9,000 | 22131514 |
| 648140Amendment | Oct 24, 2007 | Oct 24, 2007 | Quicksilver Resources Inc. | Price Unit #3HH | 9,000 | 22131514 |
| 648139 | Oct 24, 2007 | Oct 24, 2007 | XTO Energy Inc. | Bratten Ranch #F 2HH | 9,500 | 22131513 |
| 648139Amendment | Oct 24, 2007 | Oct 24, 2007 | XTO Energy Inc. | Bratten Ranch #F 2HH | 8,950 | 22131513 |
| 648117 | Oct 24, 2007 | Oct 24, 2007 | Quicksilver Resources Inc. | Sandel Unit #2HH | 9,000 | 22131517 |
| 648117Amendment | Oct 24, 2007 | Oct 24, 2007 | Quicksilver Resources Inc. | Price Unit #2HH | 9,000 | 22131517 |
| 648115 | Oct 24, 2007 | Oct 24, 2007 | Quicksilver Resources Inc. | Sandel Unit #1HH | 9,000 | 22131512 |