| 613054 | Jan 26, 2006 | Jan 26, 2006 | Devon Energy Production Co, L.P. | Alice Scheeler #1H | 9,000 | 25130759 |
| 612992 | Jan 25, 2006 | Jan 25, 2006 | Williams Prod. Gulf Coast, L.P. | Wma #1HH | 8,300 | 25130758 |
| 612992Amendment | Jan 25, 2006 | Jan 25, 2006 | Williams Prod. Gulf Coast, L.P. | Wma #1HH | 8,300 | 25130758 |
| 612921 | Jan 24, 2006 | Jan 24, 2006 | EOG Resources, Inc. | Savage Unit #1HH | 7,000 | 25130757 |
| 612921Amendment | Jan 24, 2006 | Jan 24, 2006 | EOG Resources, Inc. | Savage Unit #1HH | 8,000 | 25130757 |
| 612804 | Jan 23, 2006 | Jan 23, 2006 | Chesapeake Operating, Inc. | Goex #5HH | 9,000 | 25130756 |
| 612804Amendment | Jan 23, 2006 | Jan 23, 2006 | Chesapeake Operating, Inc. | Goex #5HH | 9,000 | 25130756 |
| 612649 | Jan 23, 2006 | Jan 23, 2006 | EOG Resources, Inc. | Sweeney Unit #6HH | 9,200 | 25130753 |
| 612648 | Jan 23, 2006 | Jan 23, 2006 | EOG Resources, Inc. | Sweeney Unit #5HH | 9,200 | 25130754 |
| 612647 | Jan 23, 2006 | Jan 23, 2006 | EOG Resources, Inc. | Sweeney Unit #4HH | 9,200 | 25130752 |
| 612644 | Jan 23, 2006 | Jan 23, 2006 | EOG Resources, Inc. | Sweeney Unit #3HH | 9,200 | 25130751 |
| 612749 | Jan 20, 2006 | Jan 20, 2006 | Devon Energy Production Co, L.P. | Tommy Lain #1H | 9,000 | 25130755 |
| 612462 | Jan 20, 2006 | Jan 20, 2006 | EOG Resources, Inc. | Palmer #4HH | 7,000 | 25130749 |
| 603197 | Jan 20, 2006 | Jan 20, 2006 | XTO Energy Inc. | Harper Cattle #B 2AHH | 10,000 | 25130459 |
| 603197Amendment | Jan 20, 2006 | Jan 20, 2006 | XTO Energy Inc. | Harper Cattle #B 2AHH | 10,000 | 25130459 |
| 612616 | Jan 19, 2006 | Jan 19, 2006 | Burlington Resources O & G Co LP | Dear Ranch #6HH | 9,000 | 25130750 |
| 612287 | Jan 19, 2006 | Jan 19, 2006 | EOG Resources, Inc. | Wilshire Unit #4HH | 7,000 | 25130738 |
| 612582 | Jan 18, 2006 | Jan 18, 2006 | Joint Resources Company | Walker-Brummett #1HH | 8,900 | 25130748 |
| 612571 | Jan 18, 2006 | Jan 18, 2006 | XTO Energy Inc. | Harper Cattle #C 2HH | 11,000 | 25130746 |
| 612561 | Jan 18, 2006 | Jan 18, 2006 | XTO Energy Inc. | Fuqua #1HH | 11,000 | 25130745 |
| 612561Amendment | Jan 18, 2006 | Jan 18, 2006 | XTO Energy Inc. | Fuqua #1HH | 11,000 | 25130745 |
| 612555 | Jan 18, 2006 | Jan 18, 2006 | Devon Energy Production Co, L.P. | Grady, John #1H | 9,000 | 25130744 |
| 612414 | Jan 18, 2006 | Jan 18, 2006 | EOG Resources, Inc. | Finder Unit #3HH | 8,700 | 25130741 |
| 612414Amendment | Jan 18, 2006 | Jan 18, 2006 | EOG Resources, Inc. | Finder Unit #3H | 10,000 | 25130741 |
| 612413 | Jan 18, 2006 | Jan 18, 2006 | EOG Resources, Inc. | Finder Unit #2HH | 8,500 | 25130742 |
| 612413Amendment | Jan 18, 2006 | Jan 18, 2006 | EOG Resources, Inc. | Finder Unit #2HH | 8,500 | 25130742 |
| 612390 | Jan 18, 2006 | Jan 18, 2006 | EOG Resources, Inc. | Finder Unit #1HH | 8,800 | 25130740 |
| 612390Amendment | Jan 18, 2006 | Jan 18, 2006 | EOG Resources, Inc. | Finder Unit #1HH | 8,800 | 25130740 |
| 612266 | Jan 18, 2006 | Jan 18, 2006 | Sundance Resources, Inc. | Basham #2HH | 9,000 | 25130736 |
| 612478 | Jan 17, 2006 | Jan 17, 2006 | Chesapeake Operating, Inc. | Mize Family #25HH | 9,000 | 25130743 |
| 612475 | Jan 17, 2006 | Jan 17, 2006 | Chesapeake Operating, Inc. | Cooper #3HH | 9,000 | 25130739 |
| 612238 | Jan 17, 2006 | Jan 17, 2006 | Encana Oil & Gas(usa) Inc. | Pipes, Kenneth #101HH | 9,000 | 25130733 |
| 612401 | Jan 13, 2006 | Jan 13, 2006 | Chief Oil & Gas LLC | Linville East Unit #1HH | 8,900 | 25130737 |
| 612395 | Jan 13, 2006 | Jan 13, 2006 | Chesapeake Operating, Inc. | Lightfoot #5HH | 9,000 | 25130735 |
| 612389 | Jan 13, 2006 | Jan 13, 2006 | Chesapeake Operating, Inc. | Williams #5HH | 9,000 | 25130734 |
| 612081 | Jan 13, 2006 | Jan 13, 2006 | Encana Oil & Gas(usa) Inc. | Washmon-Pipes Unit 'A' #1HH | 9,000 | 25130731 |
| 612293 | Jan 12, 2006 | Jan 12, 2006 | Devon Energy Production Co, L.P. | Circle R Partnership #2H | 9,000 | 25130732 |
| 612293Amendment | Jan 12, 2006 | Jan 12, 2006 | Devon Energy Production Co, L.P. | Circle R Partnership #2H | 9,000 | 25130732 |
| 612069 | Jan 12, 2006 | Jan 12, 2006 | EOG Resources, Inc. | Campbell Unit #5HH | 9,000 | 25130728 |
| 612236 | Jan 11, 2006 | Jan 11, 2006 | Arrington,david H. Oil & Gas,inc | Last Chance Midge #2HH | 7,500 | 25130730 |
| 612223 | Jan 11, 2006 | Jan 11, 2006 | Devon Energy Production Co, L.P. | Finis Shipman #1H | 9,000 | 25130729 |
| 611985 | Jan 11, 2006 | Jan 11, 2006 | EOG Resources, Inc. | Palmer #3HH | 7,000 | 25130726 |
| 611985Amendment | Jan 11, 2006 | Jan 11, 2006 | EOG Resources, Inc. | Palmer #3HH | 7,000 | 25130726 |
| 611984 | Jan 11, 2006 | Jan 11, 2006 | EOG Resources, Inc. | Stevenson "a" Unit #3HH | 7,000 | 25130725 |
| 611984Amendment | Jan 11, 2006 | Jan 11, 2006 | EOG Resources, Inc. | Stevenson "a" Unit #3HH | 10,000 | 25130725 |
| 611970 | Jan 11, 2006 | Jan 11, 2006 | EOG Resources, Inc. | Massey Unit #5HH | 7,000 | 25130724 |
| 612127 | Jan 10, 2006 | Jan 10, 2006 | Arrington,david H. Oil & Gas,inc | Last Chance Midge #1HH | 7,500 | 25130727 |
| 612031 | Jan 9, 2006 | Jan 9, 2006 | Williams Prod. Gulf Coast, L.P. | Schultz #2HH | 8,200 | 25130723 |
| 612031Amendment | Jan 9, 2006 | Jan 9, 2006 | Williams Prod. Gulf Coast, L.P. | Ball Heirs #4HH | 8,200 | 25130723 |
| 611989 | Jan 6, 2006 | Jan 6, 2006 | Chesapeake Operating, Inc. | Hunter #2HH | 9,000 | 25130722 |
| 611989Amendment | Jan 6, 2006 | Jan 6, 2006 | Chesapeake Operating, Inc. | Hunter #A 1HH | 9,000 | 25130722 |
| 611971 | Jan 6, 2006 | Jan 6, 2006 | Chesapeake Operating, Inc. | Meadows #5HH | 9,000 | 25130719 |
| 611962 | Jan 6, 2006 | Jan 6, 2006 | Chesapeake Operating, Inc. | Parnell #4HH | 9,000 | 25130720 |
| 611806 | Jan 6, 2006 | Jan 6, 2006 | EOG Resources, Inc. | U. S. Lime #5HH | 7,000 | 25130717 |
| 611806Amendment | Jan 6, 2006 | Jan 6, 2006 | EOG Resources, Inc. | U.S. Lime #5HH | 8,999 | 25130717 |
| 611805 | Jan 6, 2006 | Jan 6, 2006 | EOG Resources, Inc. | U. S. Lime #4HH | 7,000 | 25130716 |
| 611805Amendment | Jan 6, 2006 | Jan 6, 2006 | EOG Resources, Inc. | U.S. Lime #4HH | 8,999 | 25130716 |
| 611867 | Jan 4, 2006 | Jan 4, 2006 | Chesapeake Operating, Inc. | Goex #4HH | 9,000 | 25130718 |
| 611557 | Dec 29, 2005 | Dec 29, 2005 | EOG Resources, Inc. | Hope Unit #3HH | 8,400 | 25130715 |
| 611555 | Dec 29, 2005 | Dec 29, 2005 | EOG Resources, Inc. | Hope Unit #2HH | 8,500 | 25130714 |
| 611548 | Dec 29, 2005 | Dec 29, 2005 | EOG Resources, Inc. | Clements Unit #1HH | 7,000 | 25130713 |
| 611548Amendment | Dec 29, 2005 | Dec 29, 2005 | EOG Resources, Inc. | Clements Unit #1HH | 8,000 | 25130713 |
| 611590 | Dec 28, 2005 | Dec 28, 2005 | North Texas Llano Operating Corp | Espinosa #1H | 8,900 | 25130712 |
| 611590Amendment | Dec 28, 2005 | Dec 28, 2005 | North Texas Llano Operating Corp | Espinosa #1H | 8,900 | 25130712 |
| 611300 | Dec 27, 2005 | Dec 27, 2005 | EOG Resources, Inc. | Palmer #5HH | 7,000 | 25130710 |
| 611290 | Dec 27, 2005 | Dec 27, 2005 | EOG Resources, Inc. | Ferguson Foundation Unit #7HH | 8,800 | 25130709 |
| 611274 | Dec 27, 2005 | Dec 27, 2005 | EOG Resources, Inc. | Holtman Unit #1HH | 7,000 | 25130708 |
| 611274Amendment | Dec 27, 2005 | Dec 27, 2005 | EOG Resources, Inc. | Holtman Unit #1HH | 7,000 | 25130708 |
| 611532 | Dec 22, 2005 | Dec 22, 2005 | Chesapeake Operating, Inc. | East Godley #7HH | 9,000 | 25130711 |
| 611410 | Dec 21, 2005 | Dec 21, 2005 | Devon Energy Production Co, L.P. | Philip Trew #1H | 9,000 | 25130707 |
| 611370 | Dec 21, 2005 | Dec 21, 2005 | Devon Energy Production Co, L.P. | Preston, Elizabeth #1H | 9,000 | 25130706 |
| 611370Amendment | Dec 21, 2005 | Dec 21, 2005 | Devon Energy Production Co, L.P. | Preston, Elizabeth #1H | 9,000 | 25130706 |
| 611280 | Dec 20, 2005 | Dec 20, 2005 | Burlington Resources O & G Co LP | Dear Ranch #4HH | 9,000 | 25130704 |
| 611258 | Dec 20, 2005 | Dec 20, 2005 | Chesapeake Operating, Inc. | Mize Family #23HH | 11,000 | 25130705 |
| 611249 | Dec 19, 2005 | Dec 19, 2005 | Chief Oil & Gas LLC | South Johnson SWD #1 | 11,200 | 25130703 |
| 611132 | Dec 19, 2005 | Dec 19, 2005 | XTO Energy Inc. | Riddles #C 1HH | 11,000 | 25130702 |
| 611132Amendment | Dec 19, 2005 | Dec 19, 2005 | XTO Energy Inc. | Riddles #C 1HH | 11,000 | 25130702 |
| 611079 | Dec 19, 2005 | Dec 19, 2005 | EOG Resources, Inc. | Roberts Unit #4HH | 8,900 | 25130700 |
| 611079Amendment | Dec 19, 2005 | Dec 19, 2005 | EOG Resources, Inc. | Roberts Unit #4HH | 8,900 | 25130700 |
| 611076 | Dec 19, 2005 | Dec 19, 2005 | EOG Resources, Inc. | Roberts Unit #3HH | 8,900 | 25130699 |
| 611076Amendment | Dec 19, 2005 | Dec 19, 2005 | EOG Resources, Inc. | Roberts Unit #3HH | 8,900 | 25130699 |
| 611075 | Dec 19, 2005 | Dec 19, 2005 | EOG Resources, Inc. | Roberts Unit #2HH | 8,800 | 25130698 |
| 611075Amendment | Dec 19, 2005 | Dec 19, 2005 | EOG Resources, Inc. | Roberts Unit #2HH | 8,800 | 25130698 |
| 611074 | Dec 19, 2005 | Dec 19, 2005 | EOG Resources, Inc. | Roberts Unit #1HH | 9,000 | 25130697 |
| 611074Amendment | Dec 19, 2005 | Dec 19, 2005 | EOG Resources, Inc. | Roberts Unit #1HH | 9,000 | 25130697 |
| 611211 | Dec 16, 2005 | Dec 16, 2005 | Chesapeake Operating, Inc. | Welborn #1HH | 9,000 | 25130701 |
| 611211Amendment | Dec 16, 2005 | Dec 16, 2005 | Chesapeake Operating, Inc. | Welborn #1HH | 9,000 | 25130701 |
| 611141 | Dec 16, 2005 | Dec 16, 2005 | Tolar Disposal Systems, LP | Bono #1 | 10,500 | 25130696 |
| 610992 | Dec 16, 2005 | Dec 16, 2005 | EOG Resources, Inc. | Brindley #2HH | 9,000 | 25130695 |
| 611114 | Dec 15, 2005 | Dec 15, 2005 | Devon Energy Production Co, L.P. | Charles Shipp #1H | 9,000 | 25130694 |
| 611091 | Dec 15, 2005 | Dec 15, 2005 | Arrington,david H. Oil & Gas,inc | Stainless Steel Midge #1HH | 7,600 | 25130693 |
| 611091Amendment | Dec 15, 2005 | Dec 15, 2005 | Chesapeake Operating, Inc. | Stainless Steel Midge #1HH | 9,000 | 25130693 |
| 611085 | Dec 15, 2005 | Dec 15, 2005 | Devon Energy Production Co, L.P. | Larry Hanna #1H | 9,000 | 25130692 |
| 611083 | Dec 15, 2005 | Dec 15, 2005 | Devon Energy Production Co, L.P. | Dahn, Irene #1H | 9,000 | 25130691 |
| 611063 | Dec 15, 2005 | Dec 15, 2005 | Chesapeake Operating, Inc. | Lightfoot #6HH | 9,000 | 25130690 |
| 610925 | Dec 15, 2005 | Dec 15, 2005 | EOG Resources, Inc. | Coppenger Unit #3HH | 7,000 | 25130689 |
| 611008 | Dec 14, 2005 | Dec 14, 2005 | Texas Transco Inc | Grandview SWD #1 | 13,000 | 25130688 |
| 611004 | Dec 14, 2005 | Dec 14, 2005 | Chief Oil & Gas LLC | Gatlin Unit #1HH | 8,900 | 25130687 |
| 610999 | Dec 14, 2005 | Dec 14, 2005 | Chief Oil & Gas LLC | George Land Co. Unit #1HH | 8,900 | 25130686 |
| 610979 | Dec 14, 2005 | Dec 14, 2005 | Devon Energy Production Co, L.P. | Aldi, Cynthia #1H | 9,000 | 25130684 |