| 650090 | Nov 30, 2007 | Nov 30, 2007 | Chesapeake Operating, Inc. | Gainer #4HH | 9,000 | 25132389 |
| 650079 | Nov 30, 2007 | Nov 30, 2007 | XTO Energy Inc. | Dixon Unit #1HH | 11,000 | 25132386 |
| 650079Amendment | Nov 30, 2007 | Nov 30, 2007 | XTO Energy Inc. | Dixon Unit #1HH | 11,000 | 25132386 |
| 650079Amendment | Nov 30, 2007 | Nov 30, 2007 | XTO Energy Inc. | Dixon Unit #1HH | 11,000 | 25132386 |
| 650036 | Nov 29, 2007 | Nov 29, 2007 | Devon Energy Production Co, L.P. | Hes #2HH | 9,000 | 25132385 |
| 650033 | Nov 29, 2007 | Nov 29, 2007 | Devon Energy Production Co, L.P. | Circle R Partnership #19HH | 9,000 | 25132384 |
| 649983 | Nov 29, 2007 | Nov 29, 2007 | Chesapeake Operating, Inc. | Little Hoss #W 7HH | 9,000 | 25132380 |
| 649982 | Nov 29, 2007 | Nov 29, 2007 | Chesapeake Operating, Inc. | Little Hoss #W 2HH | 9,000 | 25132379 |
| 649937 | Nov 29, 2007 | Nov 29, 2007 | Chesapeake Operating, Inc. | Meadows #4HH | 9,000 | 25132378 |
| 649932 | Nov 29, 2007 | Nov 29, 2007 | EOG Resources, Inc. | Barron Unit #10HH | 10,000 | 25132377 |
| 649932Amendment | Nov 29, 2007 | Nov 29, 2007 | EOG Resources, Inc. | Barron Unit #10HH | 10,000 | 25132377 |
| 649932Amendment | Nov 29, 2007 | Nov 29, 2007 | EOG Resources, Inc. | Barron Unit #10HH | 10,000 | 25132377 |
| 649842 | Nov 26, 2007 | Nov 26, 2007 | Chesapeake Operating, Inc. | William Ray #1HH | 9,000 | 25132376 |
| 649800 | Nov 26, 2007 | Nov 26, 2007 | Chesapeake Operating, Inc. | Little Hoss #B 10HH | 9,000 | 25132375 |
| 649797 | Nov 26, 2007 | Nov 26, 2007 | Devon Energy Production Co, L.P. | Lightfoot, Donald #1HH | 9,000 | 25132374 |
| 649773 | Nov 21, 2007 | Nov 21, 2007 | Devon Energy Production Co, L.P. | Billy Hickey #9HH | 9,000 | 25132370 |
| 649768 | Nov 21, 2007 | Nov 21, 2007 | Devon Energy Production Co, L.P. | Hickey, Billy #7HH | 9,000 | 25132369 |
| 649768Amendment | Nov 21, 2007 | Nov 21, 2007 | Devon Energy Production Co, L.P. | Hickey, Billy #7HH | 9,000 | 25132369 |
| 649765 | Nov 21, 2007 | Nov 21, 2007 | Chesapeake Operating, Inc. | Bracken #1HH | 9,000 | 25132371 |
| 649765Amendment | Nov 21, 2007 | Nov 21, 2007 | Chesapeake Operating, Inc. | Bracken #1HH | 9,000 | 25132371 |
| 649638 | Nov 20, 2007 | Nov 20, 2007 | Chesapeake Operating, Inc. | Little Hoss #B 5HH | 9,000 | 25132368 |
| 649638Amendment | Nov 20, 2007 | Nov 20, 2007 | Chesapeake Operating, Inc. | Little Hoss #B 5HH | 9,000 | 25132368 |
| 649638Amendment | Nov 20, 2007 | Nov 20, 2007 | Chesapeake Operating, Inc. | Little Hoss #B 5HH | 9,000 | 25132368 |
| 649635 | Nov 20, 2007 | Nov 20, 2007 | Chesapeake Operating, Inc. | Little Hoss #B 3HH | 9,000 | 25132367 |
| 649635Amendment | Nov 20, 2007 | Nov 20, 2007 | Chesapeake Operating, Inc. | Little Hoss #B 3HH | 9,000 | 25132367 |
| 649635Amendment | Nov 20, 2007 | Nov 20, 2007 | Chesapeake Operating, Inc. | Little Hoss #B 3HH | 9,000 | 25132367 |
| 649635Amendment | Nov 20, 2007 | Nov 20, 2007 | Chesapeake Operating, Inc. | Little Hoss #B 3HH | 9,000 | 25132367 |
| 649518 | Nov 16, 2007 | Nov 16, 2007 | Devon Energy Production Co, L.P. | Hickey, Billy #4HH | 9,000 | 25132366 |
| 649475 | Nov 16, 2007 | Nov 16, 2007 | Chesapeake Operating, Inc. | Little Hoss #M 5HH | 9,000 | 25132365 |
| 649469 | Nov 16, 2007 | Nov 16, 2007 | Chesapeake Operating, Inc. | Little Hoss #M 2HH | 9,000 | 25132364 |
| 649377 | Nov 16, 2007 | Nov 16, 2007 | Chesapeake Operating, Inc. | Howington #1HH | 9,000 | 25132362 |
| 649372 | Nov 16, 2007 | Nov 16, 2007 | Chesapeake Operating, Inc. | Summit Ridge #3HH | 9,000 | 25132363 |
| 649372Amendment | Nov 16, 2007 | Nov 16, 2007 | Chesapeake Operating, Inc. | Summit Ridge #3HH | 9,000 | 25132363 |
| 649370 | Nov 16, 2007 | Nov 16, 2007 | Chesapeake Operating, Inc. | Summit Ridge #2HH | 9,000 | 25132360 |
| 649367 | Nov 16, 2007 | Nov 16, 2007 | Chesapeake Operating, Inc. | Evans #1HH | 9,000 | 25132359 |
| 649367Amendment | Nov 16, 2007 | Nov 16, 2007 | Chesapeake Operating, Inc. | Evans #1HH | 9,000 | 25132359 |
| 649295 | Nov 16, 2007 | Nov 16, 2007 | EOG Resources, Inc. | Kolar Unit #9HH | 10,000 | 25132361 |
| 649316 | Nov 15, 2007 | Nov 15, 2007 | Chesapeake Operating, Inc. | Otra Baca #2HH | 9,000 | 25132358 |
| 649315 | Nov 15, 2007 | Nov 15, 2007 | Chesapeake Operating, Inc. | Otra Baca #1HH | 9,000 | 25132357 |
| 649315Amendment | Nov 15, 2007 | Nov 15, 2007 | Chesapeake Operating, Inc. | Otra Baca #1HH | 9,000 | 25132357 |
| 649309 | Nov 15, 2007 | Nov 15, 2007 | Chesapeake Operating, Inc. | Shada #1HH | 9,000 | 25132356 |
| 649293 | Nov 15, 2007 | Nov 15, 2007 | EOG Resources, Inc. | Kolar Unit #8HH | 10,000 | 25132355 |
| 649201 | Nov 15, 2007 | Nov 15, 2007 | Rimrock Energy, LLC | Sullivan-Hickman #2HH | 12,500 | 25132354 |
| 649201Amendment | Nov 15, 2007 | Nov 15, 2007 | Rimrock Energy, LLC | Sullivan-Hickman #2HH | 12,500 | 25132354 |
| 649142 | Nov 15, 2007 | Nov 15, 2007 | Chesapeake Operating, Inc. | Summit Ridge #1HH | 9,000 | 25132352 |
| 649151 | Nov 14, 2007 | Nov 14, 2007 | Rimrock Energy, LLC | Sullivan-Hickman #1HH | 12,500 | 25132353 |
| 649151Amendment | Nov 14, 2007 | Nov 14, 2007 | Rimrock Energy, LLC | Sullivan-Hickman #1HH | 12,500 | 25132353 |
| 635719Amendment | Nov 14, 2007 | Nov 14, 2007 | EOG Resources, Inc. | King #10HH | 10,000 | 25131686 |
| 649111 | Nov 12, 2007 | Nov 12, 2007 | Devon Energy Production Co, L.P. | Frazier, Ricky #3HH | 9,000 | 25132351 |
| 648959 | Nov 12, 2007 | Nov 12, 2007 | EOG Resources, Inc. | Beckham Unit #5HH | 10,000 | 25132347 |
| 648959Amendment | Nov 12, 2007 | Nov 12, 2007 | EOG Resources, Inc. | Beckham Unit #5HH | 10,000 | 25132347 |
| 649010 | Nov 9, 2007 | Nov 9, 2007 | Devon Energy Production Co, L.P. | Hickey, Billy #6HH | 9,000 | 25132350 |
| 648998 | Nov 9, 2007 | Nov 9, 2007 | EOG Resources, Inc. | Harry Unit #2HH | 10,000 | 25132349 |
| 648993 | Nov 9, 2007 | Nov 9, 2007 | Chesapeake Operating, Inc. | Page #1HH | 9,000 | 25132348 |
| 648872 | Nov 7, 2007 | Nov 7, 2007 | Paloma Resources, LLC | JHT 'B' Unit #2HH | 9,000 | 25132346 |
| 648836 | Nov 7, 2007 | Nov 7, 2007 | Williams Prod. Gulf Coast, L.P. | Bransom South #3HH | 8,000 | 25132344 |
| 648836Amendment | Nov 7, 2007 | Nov 7, 2007 | Williams Prod. Gulf Coast, L.P. | Bransom South #3HH | 8,000 | 25132344 |
| 648835 | Nov 7, 2007 | Nov 7, 2007 | Williams Prod. Gulf Coast, L.P. | Bransom South #2HH | 8,000 | 25132345 |
| 648835Amendment | Nov 7, 2007 | Nov 7, 2007 | Williams Prod. Gulf Coast, L.P. | Bransom South #2HH | 8,000 | 25132345 |
| 648834 | Nov 7, 2007 | Nov 7, 2007 | Williams Prod. Gulf Coast, L.P. | Bransom South #1HH | 8,000 | 25132343 |
| 648834Amendment | Nov 7, 2007 | Nov 7, 2007 | Williams Prod. Gulf Coast, L.P. | Bransom South #1HH | 8,000 | 25132343 |
| 648830 | Nov 7, 2007 | Nov 7, 2007 | XTO Energy Inc. | Shipman Unit #A 2HH | 13,000 | 25132342 |
| 648830Amendment | Nov 7, 2007 | Nov 7, 2007 | XTO Energy Inc. | Shipman Unit #A 2HH | 13,000 | 25132342 |
| 648788 | Nov 7, 2007 | Nov 7, 2007 | Chesapeake Operating, Inc. | Sessions #1HH | 9,000 | 25132341 |
| 648718 | Nov 6, 2007 | Nov 6, 2007 | Devon Energy Production Co, L.P. | Bennett, Donald #8HH | 9,000 | 25132340 |
| 648711 | Nov 6, 2007 | Nov 6, 2007 | Devon Energy Production Co, L.P. | Bennett, Donald #7HH | 9,000 | 25132339 |
| 648705 | Nov 6, 2007 | Nov 6, 2007 | Devon Energy Production Co, L.P. | Bennett, Donald #6HH | 9,000 | 25132338 |
| 646586 | Nov 6, 2007 | Nov 6, 2007 | Chesapeake Operating, Inc. | Parnell #2HH | 9,000 | 25132248 |
| 648647 | Nov 5, 2007 | Nov 5, 2007 | Devon Energy Production Co, L.P. | Bennett, Donald #5HH | 9,000 | 25132336 |
| 646588 | Nov 5, 2007 | Nov 5, 2007 | Chesapeake Operating, Inc. | Parnell #8HH | 9,000 | 25132257 |
| 646587 | Nov 5, 2007 | Nov 5, 2007 | Chesapeake Operating, Inc. | Parnell #6HH | 9,000 | 25132249 |
| 648550 | Nov 2, 2007 | Nov 2, 2007 | Sullivan, Hollis R. Inc. | Cactus Jack #1HH | 8,900 | 25132337 |
| 648417 | Nov 1, 2007 | Nov 1, 2007 | Chesapeake Operating, Inc. | Olivia #5HH | 9,000 | 25132335 |
| 648414 | Nov 1, 2007 | Nov 1, 2007 | Chesapeake Operating, Inc. | Olivia #4HH | 9,000 | 25132334 |
| 648381 | Oct 31, 2007 | Oct 31, 2007 | Native American Partners, Ltd. | Native American SWD #1 | 13,500 | 25131021 |
| 648351 | Oct 31, 2007 | Oct 31, 2007 | Chesapeake Operating, Inc. | Little Hoss 7 #H 5HH | 9,000 | 25132332 |
| 648351Amendment | Oct 31, 2007 | Oct 31, 2007 | Chesapeake Operating, Inc. | Little Hoss 7 #H 5HH | 9,000 | 25132332 |
| 648349 | Oct 31, 2007 | Oct 31, 2007 | Chesapeake Operating, Inc. | Little Hoss 7 #H 3HH | 9,000 | 25132333 |
| 648349Amendment | Oct 31, 2007 | Oct 31, 2007 | Chesapeake Operating, Inc. | Little Hoss 7 #H 3HH | 9,000 | 25132333 |
| 648346 | Oct 31, 2007 | Oct 31, 2007 | Chesapeake Operating, Inc. | Little Hoss 7 #H 1HH | 9,000 | 25132331 |
| 648346Amendment | Oct 31, 2007 | Oct 31, 2007 | Chesapeake Operating, Inc. | Little Hoss 7 #H 1HH | 9,000 | 25132331 |
| 648340 | Oct 30, 2007 | Oct 30, 2007 | Bosque Disposal Systems, LLC | Luna #1 | 11,000 | 25132330 |
| 648265 | Oct 29, 2007 | Oct 29, 2007 | Bosque Disposal Systems, LLC | Rose #1 | 11,500 | 25132327 |
| 648265Amendment | Oct 29, 2007 | Oct 29, 2007 | Bosque Disposal Systems, LLC | Rose #1 | 11,500 | 25132327 |
| 648286 | Oct 26, 2007 | Oct 26, 2007 | Devon Energy Production Co, L.P. | Petty, Delores #1HH | 9,000 | 25132329 |
| 648244 | Oct 26, 2007 | Oct 26, 2007 | Chesapeake Operating, Inc. | Little Hoss #X 8HH | 9,000 | 25132326 |
| 648243 | Oct 26, 2007 | Oct 26, 2007 | Chesapeake Operating, Inc. | Little Hoss #X 6HH | 9,000 | 25132325 |
| 648233 | Oct 26, 2007 | Oct 26, 2007 | Devon Energy Production Co, L.P. | Gatlin, Winston #7H | 9,000 | 25132324 |
| 648222 | Oct 26, 2007 | Oct 26, 2007 | Western Chief Oil & Gas Company | McCutchin #4 HH | 7,500 | 25132321 |
| 648215 | Oct 26, 2007 | Oct 26, 2007 | Devon Energy Production Co, L.P. | Hickey, Billy #8HH | 9,000 | 25132323 |
| 648215Amendment | Oct 26, 2007 | Oct 26, 2007 | Devon Energy Production Co, L.P. | Hickey, Billy #8HH | 9,000 | 25132323 |
| 648211 | Oct 26, 2007 | Oct 26, 2007 | Western Chief Oil & Gas Company | McCutchin #3 HH | 7,500 | 25132322 |
| 648178 | Oct 25, 2007 | Oct 25, 2007 | Devon Energy Production Co, L.P. | Muzyka, Martha #3HH | 9,000 | 25132328 |
| 648152 | Oct 25, 2007 | Oct 25, 2007 | Chesapeake Operating, Inc. | Fritts #1HH | 9,000 | 25132320 |
| 648152Amendment | Oct 25, 2007 | Oct 25, 2007 | Chesapeake Operating, Inc. | Fritts #1HH | 9,000 | 25132320 |
| 648105 | Oct 24, 2007 | Oct 24, 2007 | Devon Energy Production Co, L.P. | Muzyka, Martha #2HH | 9,000 | 25132318 |
| 647812 | Oct 24, 2007 | Oct 24, 2007 | Devon Energy Production Co, L.P. | Scarberry Family #2HH | 9,000 | 25132319 |
| 646262Amendment | Oct 24, 2007 | Oct 24, 2007 | EOG Resources, Inc. | Fleet Unit #10 HH | 10,000 | 25132237 |
| 648062 | Oct 23, 2007 | Oct 23, 2007 | Chesapeake Operating, Inc. | Stretch #1HH | 9,000 | 25132317 |
| 648022 | Oct 22, 2007 | Oct 22, 2007 | EOG Resources, Inc. | Core Lab #5HH | 10,000 | 25132314 |