| 542107 | Feb 17, 2004 | Feb 17, 2004 | Devon Energy Operating Co., L.P. | H. Cassity GU "A" #2HH | 9,000 | 49735538 |
| 541095 | Feb 17, 2004 | Feb 17, 2004 | Devon Energy Operating Co., L.P. | Jack Wilson Gas Unit #5HH | 9,000 | 49735510 |
| 541996 | Feb 12, 2004 | Feb 12, 2004 | J-W Operating Co. | H. M. Potter Gas Unit #12 | 8,200 | 49734751 |
| 541949 | Feb 11, 2004 | Feb 11, 2004 | Devon Energy Operating Co., L.P. | Mason, Rose #2 HH | 9,000 | 49735537 |
| 541948 | Feb 11, 2004 | Feb 11, 2004 | Devon Energy Operating Co., L.P. | Schooling, E. L. "A" #3HH | 9,000 | 49735536 |
| 541902 | Feb 10, 2004 | Feb 10, 2004 | Devon Energy Operating Co., L.P. | Wise, James E. #9D | 9,000 | 49735535 |
| 541902Amendment | Feb 10, 2004 | Feb 10, 2004 | Devon Energy Operating Co., L.P. | Wise, James E. #9D | 9,000 | 49735535 |
| 541901 | Feb 10, 2004 | Feb 10, 2004 | Devon Energy Operating Co., L.P. | Hufhines, C. B. "C" #2 | 4,650 | 49700027 |
| 541896 | Feb 10, 2004 | Feb 10, 2004 | Burlington Resources O & G Co LP | Bishop A #3 | 9,000 | 49735534 |
| 541840 | Feb 9, 2004 | Feb 9, 2004 | Encana Oil & Gas(usa) Inc. | Cole Trust "A" #11A | 9,000 | 49735533 |
| 541727 | Feb 5, 2004 | Feb 5, 2004 | Devon Energy Operating Co., L.P. | Allen #4HH | 9,000 | 49735532 |
| 541726 | Feb 5, 2004 | Feb 5, 2004 | Devon Energy Operating Co., L.P. | Adams-Southwest #7HH | 9,000 | 49735531 |
| 541662 | Feb 5, 2004 | Feb 5, 2004 | Burlington Resources O & G Co LP | Breedon #1 | 9,000 | 49735530 |
| 541629 | Feb 4, 2004 | Feb 4, 2004 | Devon Energy Operating Co., L.P. | Wcco 4 - Ada Morris #20 | 9,000 | 49735529 |
| 541445 | Feb 3, 2004 | Feb 3, 2004 | Texakoma Oil & Gas Corporation | Gardner #2 | 8,700 | 49735526 |
| 541129 | Feb 3, 2004 | Feb 3, 2004 | Western Chief Oil & Gas Company | Austin #2HH | 9,000 | 49735519 |
| 541492 | Feb 2, 2004 | Feb 2, 2004 | Chief Oil & Gas LLC | Donaldson Unit #6 | 8,000 | 49735366 |
| 541492Amendment | Feb 2, 2004 | Feb 2, 2004 | Chief Oil & Gas LLC | Donaldson #6 | 8,000 | 49735366 |
| 541427 | Feb 2, 2004 | Feb 2, 2004 | Pioneer Exploration, Ltd. | Stephens, Gerald #3 | 8,900 | 49735525 |
| 541462 | Jan 30, 2004 | Jan 30, 2004 | Tema Oil and Gas Company | Oates Gas Unit #5 | 8,500 | 49735528 |
| 541452 | Jan 30, 2004 | Jan 30, 2004 | Tema Oil and Gas Company | Oates Gas Unit #6 | 8,500 | 49735527 |
| 541452Amendment | Jan 30, 2004 | Jan 30, 2004 | Tema Oil and Gas Company | Oates Gas Unit #6 | 8,500 | 49735527 |
| 541403 | Jan 30, 2004 | Jan 30, 2004 | Winchester Production Company | Reed-Hathorn #6 | 8,400 | 49735524 |
| 541369 | Jan 29, 2004 | Jan 29, 2004 | Devon Energy Operating Co., L.P. | Allen #3 | 9,000 | 49735523 |
| 541349 | Jan 29, 2004 | Jan 29, 2004 | Antero Resources I, LP | Vinson Fee C #4 | 7,800 | 49735522 |
| 541313 | Jan 28, 2004 | Jan 28, 2004 | Devon Energy Operating Co., L.P. | McCurdy, Floyd "A" #4 | 9,000 | 49735521 |
| 541312 | Jan 28, 2004 | Jan 28, 2004 | Devon Energy Operating Co., L.P. | McCurdy, Floyd "A" #3 | 9,000 | 49735520 |
| 541275 | Jan 27, 2004 | Jan 27, 2004 | Devon Energy Operating Co., L.P. | Booth, J. V. #8 | 5,650 | 49732770 |
| 541275Amendment | Jan 27, 2004 | Jan 27, 2004 | Devon Energy Operating Co., L.P. | Booth, J. V. #8 | 4,400 | 49732770 |
| 541135 | Jan 27, 2004 | Jan 27, 2004 | Van Operating, Ltd. | Whorton #4 | 8,100 | 49735518 |
| 541182 | Jan 26, 2004 | Jan 26, 2004 | Antero Resources I, LP | Indian Creek Ranch #R 3 | 7,300 | 49735517 |
| 541179 | Jan 26, 2004 | Jan 26, 2004 | Antero Resources I, LP | Indian Creek Ranch #R 2 | 7,300 | 49735516 |
| 541178 | Jan 26, 2004 | Jan 26, 2004 | Antero Resources I, LP | Indian Creek Ranch #O 2 | 7,200 | 49735515 |
| 541159 | Jan 23, 2004 | Jan 23, 2004 | Devon Energy Operating Co., L.P. | Adele Clough GU 1 #23 | 9,000 | 49735514 |
| 541158 | Jan 23, 2004 | Jan 23, 2004 | Devon Energy Operating Co., L.P. | Logan-Miller #9 | 9,000 | 49735513 |
| 541157 | Jan 23, 2004 | Jan 23, 2004 | Devon Energy Operating Co., L.P. | Tullie Timm #8D | 9,000 | 49735512 |
| 541156 | Jan 23, 2004 | Jan 23, 2004 | Devon Energy Operating Co., L.P. | Adele Clough GU 2 #21 | 9,000 | 49735511 |
| 540883 | Jan 23, 2004 | Jan 23, 2004 | Enexco, Inc. | Lindley, Bobbylea #1 | 9,000 | 49735508 |
| 540978 | Jan 22, 2004 | Jan 22, 2004 | Richey, Ray Management Co., Inc. | Stone, J. C. #2 | 8,000 | 49735509 |
| 540598 | Jan 22, 2004 | Jan 22, 2004 | Richey, Ray Management Co., Inc. | Lisby, Harold #1 | 7,600 | 49735505 |
| 540951 | Jan 20, 2004 | Jan 20, 2004 | Devon Energy Operating Co., L.P. | Walker, O. #3HH | 9,000 | 49735507 |
| 540786 | Jan 15, 2004 | Jan 15, 2004 | Devon Energy Operating Co., L.P. | Logan-Miller #8 | 9,000 | 49735506 |
| 540581 | Jan 14, 2004 | Jan 14, 2004 | Burlington Resources O & G Co LP | McCurdy #4 | 9,000 | 49735502 |
| 540580 | Jan 14, 2004 | Jan 14, 2004 | Burlington Resources O & G Co LP | McCurdy #2 | 9,000 | 49735499 |
| 540677 | Jan 13, 2004 | Jan 13, 2004 | Devon Energy Operating Co., L.P. | Wcco 4 - Georgie Fitch #9D | 9,000 | 49735504 |
| 540649 | Jan 13, 2004 | Jan 13, 2004 | Texakoma Oil & Gas Corporation | LBJ Grasslands 96 #1 | 8,700 | 49735503 |
| 540611 | Jan 13, 2004 | Jan 13, 2004 | Excel Oil & Gas, Inc. | Coulter #1 | 7,000 | 49735501 |
| 540603 | Jan 13, 2004 | Jan 13, 2004 | Burlington Resources O & G Co LP | Hancock #2 | 8,370 | 49734736 |
| 540636 | Jan 12, 2004 | Jan 12, 2004 | Devon Energy Operating Co., L.P. | Timm, Tullie #9 | 9,000 | 49735500 |
| 540536 | Jan 12, 2004 | Jan 12, 2004 | Antero Resources I, LP | Indian Creek Ranch #O 3 | 7,200 | 49735498 |
| 540536Amendment | Jan 12, 2004 | Jan 12, 2004 | Antero Resources I, LP | Indian Creek Ranch #O 3 | 7,375 | 49735498 |
| 540536Amendment | Jan 12, 2004 | Jan 12, 2004 | Antero Resources I, LP | Indian Creek #O 3 | 7,375 | 49735498 |
| 540457 | Jan 9, 2004 | Jan 9, 2004 | Encana Oil & Gas(usa) Inc. | Cole Trust "A" #10A | 9,500 | 49735497 |
| 540512 | Jan 8, 2004 | Jan 8, 2004 | Devon Energy Operating Co., L.P. | Hutchinson, Betty #1 | 5,810 | 49702460 |
| 540305 | Jan 6, 2004 | Jan 6, 2004 | Enexco, Inc. | Woodruff, Carl #1 | 9,000 | 49735496 |
| 540288 | Jan 2, 2004 | Jan 2, 2004 | Devon Energy Operating Co., L.P. | Sewell Ranch, Inc. #8D | 9,000 | 49735495 |
| 540258 | Dec 31, 2003 | Dec 31, 2003 | Devon Energy Operating Co., L.P. | Timm, Tullie #6D | 9,000 | 49735494 |
| 540258Amendment | Dec 31, 2003 | Dec 31, 2003 | Devon Energy Operating Co., L.P. | Timm, Tullie #6D | 9,000 | 49735494 |
| 540215 | Dec 30, 2003 | Dec 30, 2003 | Abernathy Auto, Inc. | Howard #1 | 9,000 | 49735493 |
| 540215Amendment | Dec 30, 2003 | Dec 30, 2003 | Abernathy Auto, Inc. | Howard #1HH | 9,000 | 49735493 |
| 540173 | Dec 29, 2003 | Dec 29, 2003 | Encana Oil & Gas(usa) Inc. | Wolfenbarger #3HH | 8,000 | 49735492 |
| 540145 | Dec 29, 2003 | Dec 29, 2003 | Winchester Production Company | Sauder, Lee #3H | 8,300 | 49735491 |
| 540121 | Dec 23, 2003 | Dec 23, 2003 | Encana Oil & Gas(usa) Inc. | Cole Trust "A" #9 AH | 9,500 | 49735490 |
| 540085 | Dec 23, 2003 | Dec 23, 2003 | Western Chief Oil & Gas Company | Austin #1 | 8,000 | 49735489 |
| 540037 | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Maxwell Billy J. #2 | 9,000 | 49735478 |
| 540037Amendment | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Maxwell, Billy J. #2 | 9,000 | 49735478 |
| 540035 | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Audubon #1 | 9,000 | 49735487 |
| 540035Amendment | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Audubon #1 | 9,000 | 49735487 |
| 540034 | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Maxwell Billy J. #3 | 9,000 | 49735477 |
| 540031 | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Maxwell Billy J. #1 | 9,000 | 49735476 |
| 540028 | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Rutherford Bennie D. #3 | 9,000 | 49735480 |
| 540027 | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Audubon #2 | 9,000 | 49735486 |
| 540024 | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Rutherford Bennie D. #2 | 9,000 | 49735479 |
| 540024Amendment | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Rutherford Bennie D. #2 | 9,000 | 49735479 |
| 540023 | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Audubon #3 | 9,000 | 49735485 |
| 540021 | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Rutherford, Bennie D. #1 | 9,000 | 49735481 |
| 540020 | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Vanderbeken #1 | 9,000 | 49735488 |
| 540020Amendment | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | Vanderbeken #1 | 9,000 | 49735488 |
| 540019 | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | McClure #1 | 9,000 | 49735484 |
| 540019Amendment | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | McClure #1 | 9,000 | 49735484 |
| 540018 | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | McClure #3 | 9,000 | 49735483 |
| 540017 | Dec 22, 2003 | Dec 22, 2003 | Aruba Petroleum, Inc. | McClure #2 | 9,000 | 49735482 |
| 540013 | Dec 22, 2003 | Dec 22, 2003 | Devon Energy Operating Co., L.P. | Timm, Tullie #7 | 9,000 | 49735475 |
| 539984 | Dec 19, 2003 | Dec 19, 2003 | Nautilus Exploration, Inc. | Little #1 | 8,450 | 49735474 |
| 539956 | Dec 19, 2003 | Dec 19, 2003 | Devon Energy Operating Co., L.P. | R. E. Austin Gas Unit #1HH | 9,000 | 49735473 |
| 539876 | Dec 18, 2003 | Dec 18, 2003 | Antero Resources I, LP | Indian Creek Ranch #R 4 | 7,250 | 49735472 |
| 539673 | Dec 18, 2003 | Dec 18, 2003 | Ryder Scott Oil Co. | Maeyers #5 | 8,200 | 49735467 |
| 539672 | Dec 18, 2003 | Dec 18, 2003 | Ryder Scott Oil Co. | Downe #4 | 8,200 | 49735466 |
| 539549 | Dec 18, 2003 | Dec 18, 2003 | Denbury Resources Inc. | Trwd #E 1H | 6,865 | 49735463 |
| 539860 | Dec 17, 2003 | Dec 17, 2003 | Star of Texas Energy Srvs, Inc. | Oates-Star #3HH | 8,000 | 49735471 |
| 539837 | Dec 17, 2003 | Dec 17, 2003 | Aruba Petroleum, Inc. | Maxwell #3 | 9,000 | 49735470 |
| 539836 | Dec 17, 2003 | Dec 17, 2003 | Aruba Petroleum, Inc. | Maxwell #2 | 9,000 | 49735469 |
| 539752 | Dec 16, 2003 | Dec 16, 2003 | Merritt Operating, Inc. | Johnson #1 | 9,000 | 49735468 |
| 539752Amendment | Dec 16, 2003 | Dec 16, 2003 | Merritt Operating, Inc. | Johnson #1H | 9,000 | 49735468 |
| 539733 | Dec 16, 2003 | Dec 16, 2003 | Winchester Production Company | Cocanougher 287 #5H | 8,000 | 49735465 |
| 539571 | Dec 12, 2003 | Dec 12, 2003 | Devon Energy Operating Co., L.P. | Slay, C. W. #10HH | 9,000 | 49735464 |
| 539527 | Dec 10, 2003 | Dec 10, 2003 | Encana Oil & Gas(usa) Inc. | Cole Trust "A" #8A | 9,500 | 49735462 |
| 539519 | Dec 10, 2003 | Dec 10, 2003 | Devon Energy Operating Co., L.P. | Acola, Sam "D" #6 | 9,999 | 49735461 |
| 538898 | Dec 8, 2003 | Dec 8, 2003 | Echo Production, Inc. | Waggoner, Merle T. #2 | 8,375 | 49734773 |
| 539301 | Dec 4, 2003 | Dec 4, 2003 | Devon Energy Operating Co., L.P. | Young, W. C. "Bill" #6D | 9,000 | 49735460 |