| 642581 | Jul 27, 2007 | Jul 27, 2007 | Quicksilver Resources Inc. | Yosemite Sam Unit #6HH | 6,400 | 22131433 |
| 641108 | Jul 27, 2007 | Jul 27, 2007 | Range Production Company | Mitchell Ranch #10HH | 9,000 | 22131422 |
| 642279 | Jul 21, 2007 | Jul 21, 2007 | XTO Energy Inc. | Bratten Ranch #G 2HH | 11,000 | 22131432 |
| 642279Amendment | Jul 21, 2007 | Jul 21, 2007 | XTO Energy Inc. | Bratten Ranch #G 2HH | 8,400 | 22131432 |
| 641883 | Jul 14, 2007 | Jul 14, 2007 | EOG Resources, Inc. | Branch Farms "D" Unit #1HH | 5,500 | 22131431 |
| 641670 | Jul 12, 2007 | Jul 12, 2007 | Burlington Resources O & G Co LP | Coates #1HH | 9,000 | 22131430 |
| 641574 | Jul 12, 2007 | Jul 12, 2007 | EOG Resources, Inc. | Branch Farms "a" Unit #1HH | 5,500 | 22131426 |
| 641577 | Jul 10, 2007 | Jul 10, 2007 | EOG Resources, Inc. | Branch Farms "a" Unit #2HH | 5,500 | 22131428 |
| 641573 | Jul 10, 2007 | Jul 10, 2007 | EOG Resources, Inc. | Branch Farms "C" Unit #1HH | 5,500 | 22131427 |
| 641573Amendment | Jul 10, 2007 | Jul 10, 2007 | EOG Resources, Inc. | Branch Farms "C" Unit #1HH | 5,500 | 22131427 |
| 641469 | Jul 9, 2007 | Jul 9, 2007 | Quicksilver Resources Inc. | Lovie Unit #2HH | 6,400 | 22131425 |
| 641469Amendment | Jul 9, 2007 | Jul 9, 2007 | Quicksilver Resources Inc. | Lovey Unit #2HH | 6,400 | 22131425 |
| 641467 | Jul 9, 2007 | Jul 9, 2007 | Quicksilver Resources Inc. | Lovie Unit #1HH | 6,400 | 22131424 |
| 641467Amendment | Jul 9, 2007 | Jul 9, 2007 | Quicksilver Resources Inc. | Lovey Unit #1HH | 6,400 | 22131424 |
| 641138 | Jul 6, 2007 | Jul 6, 2007 | Arrington,david H. Oil & Gas,inc | Finn, Mickey "2" #2HH | 6,200 | 22131423 |
| 641107 | Jul 2, 2007 | Jul 2, 2007 | Range Production Company | Mitchell Ranch #9HH | 9,000 | 22131421 |
| 640850 | Jun 27, 2007 | Jun 27, 2007 | Burlington Resources O & G Co LP | Crowell Unit #1HH | 9,000 | 22131420 |
| 640850Amendment | Jun 27, 2007 | Jun 27, 2007 | Burlington Resources O & G Co LP | Crowell Unit #1HH | 9,000 | 22131420 |
| 640755 | Jun 27, 2007 | Jun 27, 2007 | Quicksilver Resources Inc. | Mooney Unit A #3HH | 6,400 | 22131419 |
| 640757 | Jun 26, 2007 | Jun 26, 2007 | Quicksilver Resources Inc. | Mooney Unit B #3HH | 6,400 | 22131418 |
| 640756 | Jun 26, 2007 | Jun 26, 2007 | Quicksilver Resources Inc. | Mooney Unit B #2HH | 6,400 | 22131416 |
| 640753 | Jun 26, 2007 | Jun 26, 2007 | Quicksilver Resources Inc. | Mooney Unit A #2HH | 6,400 | 22131417 |
| 640729 | Jun 25, 2007 | Jun 25, 2007 | Quicksilver Resources Inc. | Radar #2HH | 6,400 | 22131415 |
| 640635 | Jun 22, 2007 | Jun 22, 2007 | Range Production Company | Mitchell Ranch #12HH | 9,000 | 22131414 |
| 640508 | Jun 20, 2007 | Jun 20, 2007 | Range Production Company | Mitchell Ranch #42HH | 9,000 | 22131413 |
| 640455 | Jun 18, 2007 | Jun 18, 2007 | XTO Energy Inc. | Bratten Ranch #G 1HH | 10,500 | 22131412 |
| 640429 | Jun 18, 2007 | Jun 18, 2007 | Range Production Company | Mitchell Ranch #14HH | 9,000 | 22131411 |
| 640010 | Jun 13, 2007 | Jun 13, 2007 | Quicksilver Resources Inc. | Yosemite Sam Unit #5HH | 6,400 | 22131410 |
| 640010Amendment | Jun 13, 2007 | Jun 13, 2007 | Quicksilver Resources Inc. | Yosemite Sam Unit #5HH | 6,400 | 22131410 |
| 640008 | Jun 13, 2007 | Jun 13, 2007 | Quicksilver Resources Inc. | Yosemite Sam Unit #4HH | 6,400 | 22131409 |
| 640008Amendment | Jun 13, 2007 | Jun 13, 2007 | Quicksilver Resources Inc. | Yosemite Sam Unit #4HH | 6,400 | 22131409 |
| 640007 | Jun 13, 2007 | Jun 13, 2007 | Quicksilver Resources Inc. | Yosemite Sam Unit #3HH | 6,400 | 22131408 |
| 640007Amendment | Jun 13, 2007 | Jun 13, 2007 | Quicksilver Resources Inc. | Yosemite Sam Unit #3HH | 6,400 | 22131408 |
| 640007Amendment | Jun 13, 2007 | Jun 13, 2007 | Quicksilver Resources Inc. | Yosemite Sam Unit #3HH | 6,400 | 22131408 |
| 640079 | Jun 12, 2007 | Jun 12, 2007 | Quicksilver Resources Inc. | Sass Unit #7HH | 6,400 | 22131407 |
| 640077 | Jun 12, 2007 | Jun 12, 2007 | Quicksilver Resources Inc. | Sass Unit #6HH | 6,400 | 22131403 |
| 640075 | Jun 12, 2007 | Jun 12, 2007 | Quicksilver Resources Inc. | Sass Unit #5HH | 6,400 | 22131406 |
| 640074 | Jun 12, 2007 | Jun 12, 2007 | Quicksilver Resources Inc. | Sass Unit #4HH | 6,400 | 22131405 |
| 640072 | Jun 12, 2007 | Jun 12, 2007 | Quicksilver Resources Inc. | Sass Unit #3HH | 6,400 | 22131404 |
| 640067 | Jun 12, 2007 | Jun 12, 2007 | Quicksilver Resources Inc. | Sass Unit #2HH | 6,400 | 22131401 |
| 640042 | Jun 11, 2007 | Jun 11, 2007 | Quicksilver Resources Inc. | Big Rock Candy Mountain #9HH | 6,400 | 22131402 |
| 640041 | Jun 11, 2007 | Jun 11, 2007 | Quicksilver Resources Inc. | Big Rock Candy Mountain #8HH | 6,400 | 22131400 |
| 640041Amendment | Jun 11, 2007 | Jun 11, 2007 | Quicksilver Resources Inc. | Big Rock Candy Mountain #8HH | 9,000 | 22131400 |
| 640040 | Jun 11, 2007 | Jun 11, 2007 | Quicksilver Resources Inc. | Big Rock Candy Mountain #7HH | 6,400 | 22131399 |
| 640032 | Jun 11, 2007 | Jun 11, 2007 | Quicksilver Resources Inc. | Big Rock Candy Mountain #6HH | 6,400 | 22131398 |
| 640028 | Jun 11, 2007 | Jun 11, 2007 | Quicksilver Resources Inc. | Big Rock Candy Mountain #5HH | 6,400 | 22131397 |
| 640005 | Jun 11, 2007 | Jun 11, 2007 | Quicksilver Resources Inc. | Yosemite Sam Unit #2HH | 6,400 | 22131396 |
| 639484 | May 30, 2007 | May 30, 2007 | Arrington,david H. Oil & Gas,inc | Finn, Mickey 2 #1HH | 6,400 | 22131395 |
| 639542 | May 29, 2007 | May 29, 2007 | Quicksilver Resources Inc. | Sass Unit #1HH | 6,400 | 22131394 |
| 639541 | May 29, 2007 | May 29, 2007 | Quicksilver Resources Inc. | Chesbrough-Shaw Unit #4HH | 6,400 | 22131393 |
| 639536 | May 29, 2007 | May 29, 2007 | Quicksilver Resources Inc. | Chesbrough-Shaw Unit #2HH | 6,400 | 22131391 |
| 639532 | May 29, 2007 | May 29, 2007 | Quicksilver Resources Inc. | Chesbrough-Shaw Unit #1HH | 6,400 | 22131392 |
| 639532Amendment | May 29, 2007 | May 29, 2007 | Quicksilver Resources Inc. | Chesbrough-Shaw Unit #1HH | 6,400 | 22131392 |
| 639532Amendment | May 29, 2007 | May 29, 2007 | Quicksilver Resources Inc. | Chesbrough-Shaw Unit #1HH | 6,400 | 22131392 |
| 639387 | May 25, 2007 | May 25, 2007 | Quicksilver Resources Inc. | Yosemite Sam Unit #1HH | 6,400 | 22131390 |
| 639387Amendment | May 25, 2007 | May 25, 2007 | Quicksilver Resources Inc. | Yosemite Sam Unit #1HH | 6,400 | 22131390 |
| 639270 | May 23, 2007 | May 23, 2007 | EOG Resources, Inc. | Black Ranch #17HH | 5,400 | 22131388 |
| 639247 | May 23, 2007 | May 23, 2007 | Quicksilver Resources Inc. | Gleen Unit #6HH | 6,400 | 22131389 |
| 639247Amendment | May 23, 2007 | May 23, 2007 | Quicksilver Resources Inc. | Gleen Unit #6HH | 6,400 | 22131389 |
| 639244 | May 23, 2007 | May 23, 2007 | Quicksilver Resources Inc. | Gleen Unit #5HH | 6,400 | 22131387 |
| 639244Amendment | May 23, 2007 | May 23, 2007 | Quicksilver Resources Inc. | Gleen Unit #5HH | 6,400 | 22131387 |
| 638971 | May 23, 2007 | May 23, 2007 | Quicksilver Resources Inc. | Chesbrough-Shaw Unit #5HH | 6,400 | 22131382 |
| 639234 | May 22, 2007 | May 22, 2007 | Quicksilver Resources Inc. | Gleen Unit #4HH | 6,400 | 22131386 |
| 639232 | May 22, 2007 | May 22, 2007 | Quicksilver Resources Inc. | James Unit #3HH | 6,400 | 22131385 |
| 639232Amendment | May 22, 2007 | May 22, 2007 | Quicksilver Resources Inc. | James Unit #3HH | 6,400 | 22131385 |
| 639229 | May 22, 2007 | May 22, 2007 | Quicksilver Resources Inc. | James Unit #2HH | 6,400 | 22131384 |
| 639229Amendment | May 22, 2007 | May 22, 2007 | Quicksilver Resources Inc. | James Unit #2HH | 6,400 | 22131384 |
| 639224 | May 22, 2007 | May 22, 2007 | Quicksilver Resources Inc. | James Unit #1HH | 6,400 | 22131383 |
| 638952 | May 21, 2007 | May 21, 2007 | Range Production Company | Mitchell Ranch #8HH | 7,500 | 22131380 |
| 638970 | May 19, 2007 | May 19, 2007 | Quicksilver Resources Inc. | Chesbrough-Shaw Unit #3HH | 6,400 | 22131381 |
| 638828 | May 18, 2007 | May 18, 2007 | Devon Energy Production Co, L.P. | Christine's Lucky Draw #3HH | 9,000 | 22131379 |
| 638827 | May 18, 2007 | May 18, 2007 | Chesapeake Operating, Inc. | Little Hoss #A 4HH | 9,000 | 22131378 |
| 638825 | May 18, 2007 | May 18, 2007 | Chesapeake Operating, Inc. | Little Hoss #A 2HH | 9,000 | 22131377 |
| 638755 | May 17, 2007 | May 17, 2007 | Quicksilver Resources Inc. | Gleen Unit #3HH | 6,600 | 22131376 |
| 638755Amendment | May 17, 2007 | May 17, 2007 | Quicksilver Resources Inc. | Gleen Unit #3HH | 6,600 | 22131376 |
| 638753 | May 17, 2007 | May 17, 2007 | Quicksilver Resources Inc. | Gleen Unit #2HH | 6,600 | 22131375 |
| 638753Amendment | May 17, 2007 | May 17, 2007 | Quicksilver Resources Inc. | Gleen Unit #2HH | 6,600 | 22131375 |
| 638712 | May 17, 2007 | May 17, 2007 | Quicksilver Resources Inc. | Gleen Unit #1HH | 6,600 | 22131374 |
| 638712Amendment | May 17, 2007 | May 17, 2007 | Quicksilver Resources Inc. | Gleen Unit #1HH | 6,600 | 22131374 |
| 638556 | May 16, 2007 | May 16, 2007 | Arrington,david H. Oil & Gas,inc | Royal Trude #4HH | 6,400 | 22131373 |
| 638508 | May 15, 2007 | May 15, 2007 | Arrington,david H. Oil & Gas,inc | Zonker #2HH | 6,400 | 22131372 |
| 638507 | May 15, 2007 | May 15, 2007 | Arrington,david H. Oil & Gas,inc | Zonker #1HH | 6,400 | 22131371 |
| 638506 | May 15, 2007 | May 15, 2007 | Arrington,david H. Oil & Gas,inc | Royal Trude #3HH | 6,400 | 22131370 |
| 638503 | May 15, 2007 | May 15, 2007 | Arrington,david H. Oil & Gas,inc | Royal Trude #2HH | 6,400 | 22131369 |
| 638492 | May 14, 2007 | May 14, 2007 | Arrington,david H. Oil & Gas,inc | Royal Trude #1HH | 6,400 | 22131368 |
| 638484 | May 14, 2007 | May 14, 2007 | Arrington,david H. Oil & Gas,inc | Zulu #3HH | 6,400 | 22131367 |
| 638479 | May 14, 2007 | May 14, 2007 | Arrington,david H. Oil & Gas,inc | Zulu #2HH | 6,400 | 22131366 |
| 638475 | May 14, 2007 | May 14, 2007 | Arrington,david H. Oil & Gas,inc | Zulu #1HH | 6,400 | 22131365 |
| 636549 | May 14, 2007 | May 14, 2007 | Sauder Management Company | Odom (Slocum) Ranch #1 | 6,385 | 22131015 |
| 638376 | May 11, 2007 | May 11, 2007 | Quicksilver Resources Inc. | Taylor SWD #1 | 9,500 | 22131364 |
| 638343 | May 11, 2007 | May 11, 2007 | Quicksilver Resources Inc. | Red Dragon Unit #3HH | 6,400 | 22131363 |
| 638285 | May 11, 2007 | May 11, 2007 | Range Production Company | Mitchell Ranch #7HH | 7,000 | 22131362 |
| 637516 | Apr 30, 2007 | Apr 30, 2007 | EOG Resources, Inc. | Black Ranch #16HH | 5,300 | 22131361 |
| 637516Amendment | Apr 30, 2007 | Apr 30, 2007 | EOG Resources, Inc. | Black Ranch #16HH | 6,000 | 22131361 |
| 637501 | Apr 30, 2007 | Apr 30, 2007 | EOG Resources, Inc. | Black Ranch #12HH | 5,300 | 22131360 |
| 637501Amendment | Apr 30, 2007 | Apr 30, 2007 | EOG Resources, Inc. | Black Ranch #12HH | 5,300 | 22131360 |
| 637499 | Apr 30, 2007 | Apr 30, 2007 | EOG Resources, Inc. | Black Ranch #10HH | 5,300 | 22131359 |
| 637499Amendment | Apr 30, 2007 | Apr 30, 2007 | EOG Resources, Inc. | Black Ranch #10HH | 5,300 | 22131359 |
| 637213 | Apr 23, 2007 | Apr 23, 2007 | Arrington,david H. Oil & Gas,inc | Mickey Finn #3HH | 6,200 | 22131358 |
| 637208 | Apr 23, 2007 | Apr 23, 2007 | Arrington,david H. Oil & Gas,inc | Mickey Finn #2HH | 6,200 | 22131357 |