| 624297Amendment | Aug 14, 2006 | Aug 14, 2006 | Chesapeake Operating, Inc. | North Lake #2HH | 9,000 | 25131136 |
| 624270 | Aug 14, 2006 | Aug 14, 2006 | Devon Energy Production Co, L.P. | B. J. Hurt #1H | 9,000 | 25131135 |
| 623895 | Aug 14, 2006 | Aug 14, 2006 | EOG Resources, Inc. | Campbell Unit #7 | 8,500 | 25131122 |
| 624218 | Aug 11, 2006 | Aug 11, 2006 | Chesapeake Operating, Inc. | West, Mae B #1HH | 9,000 | 25131134 |
| 624195 | Aug 11, 2006 | Aug 11, 2006 | Chesapeake Operating, Inc. | Childress #11HH | 9,000 | 25131132 |
| 624181 | Aug 11, 2006 | Aug 11, 2006 | Chesapeake Operating, Inc. | Childress #10HH | 9,000 | 25131131 |
| 624140 | Aug 10, 2006 | Aug 10, 2006 | Chesapeake Operating, Inc. | Mann, S. #3HH | 9,000 | 25131128 |
| 624132 | Aug 10, 2006 | Aug 10, 2006 | Chesapeake Operating, Inc. | Buchanan #4HH | 9,000 | 25131130 |
| 624130 | Aug 10, 2006 | Aug 10, 2006 | XTO Energy Inc. | Jane Marshall B Unit #1HH | 11,000 | 25131127 |
| 624130Amendment | Aug 10, 2006 | Aug 10, 2006 | XTO Energy Inc. | Jane Marshall B Unit #1HH | 11,000 | 25131127 |
| 624129 | Aug 10, 2006 | Aug 10, 2006 | Chesapeake Operating, Inc. | Buchanan #3HH | 9,000 | 25131129 |
| 624121 | Aug 10, 2006 | Aug 10, 2006 | Chesapeake Operating, Inc. | Buchanan #1HH | 9,000 | 25131125 |
| 624116 | Aug 10, 2006 | Aug 10, 2006 | Chesapeake Operating, Inc. | Mann, S. #16HH | 9,000 | 25131124 |
| 624115 | Aug 10, 2006 | Aug 10, 2006 | Chesapeake Operating, Inc. | Mann, S. #7HH | 9,000 | 25131123 |
| 623758 | Aug 10, 2006 | Aug 10, 2006 | EOG Resources, Inc. | U.S. Lime #9HH | 7,000 | 25131121 |
| 624119 | Aug 9, 2006 | Aug 9, 2006 | XTO Energy Inc. | Harper Cattle #C 5HH | 12,000 | 25131126 |
| 624119Amendment | Aug 9, 2006 | Aug 9, 2006 | XTO Energy Inc. | Harper Cattle #G 5CHH | 12,000 | 25131126 |
| 624119Amendment | Aug 9, 2006 | Aug 9, 2006 | XTO Energy Inc. | Harper Cattle #G 5CHH | 12,000 | 25131126 |
| 623751 | Aug 9, 2006 | Aug 9, 2006 | EOG Resources, Inc. | U.S. Lime #2HH | 7,000 | 25131119 |
| 623751Amendment | Aug 9, 2006 | Aug 9, 2006 | EOG Resources, Inc. | U.S. Lime #2HH | 8,999 | 25131119 |
| 623937 | Aug 8, 2006 | Aug 8, 2006 | Chesapeake Operating, Inc. | Green Nolan Muddler #2HH | 9,000 | 25131120 |
| 623623 | Aug 8, 2006 | Aug 8, 2006 | EOG Resources, Inc. | Smelley #2HH | 7,000 | 25131115 |
| 623835 | Aug 4, 2006 | Aug 4, 2006 | Aspect Energy, LLC | Klondike Ranch #3HH | 7,000 | 25131116 |
| 623832 | Aug 4, 2006 | Aug 4, 2006 | Chesapeake Operating, Inc. | Little Hoss #J 8HH | 9,000 | 25131117 |
| 623831 | Aug 4, 2006 | Aug 4, 2006 | Chesapeake Operating, Inc. | Little Hoss #J 7HH | 9,000 | 25131118 |
| 623761 | Aug 3, 2006 | Aug 3, 2006 | Chesapeake Operating, Inc. | Little Hoss #J 6HH | 9,000 | 25131114 |
| 623462 | Aug 3, 2006 | Aug 3, 2006 | EOG Resources, Inc. | Griffin Unit #1HH | 8,700 | 25131112 |
| 623385 | Aug 3, 2006 | Aug 3, 2006 | EOG Resources, Inc. | Richardson Unit #1HH | 7,000 | 25131108 |
| 623385Amendment | Aug 3, 2006 | Aug 3, 2006 | EOG Resources, Inc. | Richardson Unit #1HH | 7,000 | 25131108 |
| 623704 | Aug 2, 2006 | Aug 2, 2006 | Carrizo Oil & Gas, Inc. | Trinity Materials #1HH | 7,500 | 25131113 |
| 623640 | Aug 2, 2006 | Aug 2, 2006 | Chesapeake Operating, Inc. | Marshall #5HH | 9,000 | 25131110 |
| 623259 | Aug 2, 2006 | Aug 2, 2006 | EOG Resources, Inc. | Clark Unit #2HH | 7,000 | 25131104 |
| 623256 | Aug 2, 2006 | Aug 2, 2006 | EOG Resources, Inc. | Clark Unit #1HH | 7,000 | 25131103 |
| 623659 | Aug 1, 2006 | Aug 1, 2006 | EOG Resources, Inc. | Raam Unit #3 | 8,700 | 25131111 |
| 623624 | Aug 1, 2006 | Aug 1, 2006 | XTO Energy Inc. | Jane Marshall a Unit #1HH | 12,000 | 25131109 |
| 623624Amendment | Aug 1, 2006 | Aug 1, 2006 | XTO Energy Inc. | Jane Marshall a Unit #1HH | 12,000 | 25131109 |
| 623624Amendment | Aug 1, 2006 | Aug 1, 2006 | XTO Energy Inc. | Jane Marshall a Unit #1HH | 12,000 | 25131109 |
| 623610 | Aug 1, 2006 | Aug 1, 2006 | Devon Energy Production Co, L.P. | Sid Ellis #1H | 9,000 | 25131107 |
| 623569 | Aug 1, 2006 | Aug 1, 2006 | Chesapeake Operating, Inc. | Chaney #1HH | 9,000 | 25131106 |
| 623542 | Aug 1, 2006 | Aug 1, 2006 | Basa Resources, Inc. | Combs Gas Unit #1H | 7,900 | 25131105 |
| 623444 | Jul 31, 2006 | Jul 31, 2006 | EOG Resources, Inc. | Hughes Unit #1HH | 8,300 | 25131101 |
| 623460 | Jul 28, 2006 | Jul 28, 2006 | Williams Prod. Gulf Coast, L.P. | Creek Park #2HH | 8,000 | 25131102 |
| 623426 | Jul 28, 2006 | Jul 28, 2006 | Quicksilver Resources Inc. | Ralph Wiggum Unit #2HH | 6,400 | 25131099 |
| 623425 | Jul 28, 2006 | Jul 28, 2006 | Quicksilver Resources Inc. | Ralph Wiggum #1HH | 6,400 | 25131100 |
| 623425Amendment | Jul 28, 2006 | Jul 28, 2006 | Quicksilver Resources Inc. | Wiggum, Ralph #1HH | 6,400 | 25131100 |
| 623407 | Jul 28, 2006 | Jul 28, 2006 | Burlington Resources O & G Co LP | B.G.M.T. #1HH | 9,000 | 25131098 |
| 623407Amendment | Jul 28, 2006 | Jul 28, 2006 | Burlington Resources O & G Co LP | B.G.M.T. #1HH | 9,000 | 25131098 |
| 623388 | Jul 28, 2006 | Jul 28, 2006 | Chesapeake Operating, Inc. | Brown, E. #5HH | 9,000 | 25131097 |
| 623000 | Jul 28, 2006 | Jul 28, 2006 | Sundance Resources, Inc. | Pocaterra #1HH | 7,000 | 25131088 |
| 623000Amendment | Jul 28, 2006 | Jul 28, 2006 | Sundance Resources, Inc. | Pocaterra #1HH | 7,000 | 25131088 |
| 623000Amendment | Jul 28, 2006 | Jul 28, 2006 | Sundance Resources, Inc. | Pocaterra #1HH | 7,000 | 25131088 |
| 623331 | Jul 27, 2006 | Jul 27, 2006 | Devon Energy Production Co, L.P. | Smith Mustang Ltd. #1H | 9,000 | 25131096 |
| 623331Amendment | Jul 27, 2006 | Jul 27, 2006 | Devon Energy Production Co, L.P. | Smith Mustang Ltd. #1H | 9,000 | 25131096 |
| 623248 | Jul 26, 2006 | Jul 26, 2006 | XTO Energy Inc. | High View Estates #B 1HH | 11,000 | 25131095 |
| 623244 | Jul 26, 2006 | Jul 26, 2006 | XTO Energy Inc. | Superior Unit #2HH | 11,000 | 25131094 |
| 623244Amendment | Jul 26, 2006 | Jul 26, 2006 | XTO Energy Inc. | Superior Unit #2HH | 11,000 | 25131094 |
| 623240 | Jul 26, 2006 | Jul 26, 2006 | XTO Energy Inc. | Billy Richmond Unit #1HH | 12,000 | 25131093 |
| 623240Amendment | Jul 26, 2006 | Jul 26, 2006 | XTO Energy Inc. | Billy Richmond Unit #1HH | 12,000 | 25131093 |
| 623240Amendment | Jul 26, 2006 | Jul 26, 2006 | XTO Energy Inc. | Billy Richmond Unit #1HH | 12,000 | 25131093 |
| 622819 | Jul 26, 2006 | Jul 26, 2006 | EOG Resources, Inc. | Finder Unit #5HH | 8,800 | 25131083 |
| 622817 | Jul 26, 2006 | Jul 26, 2006 | EOG Resources, Inc. | Finder Unit #4HH | 8,800 | 25131082 |
| 622802 | Jul 26, 2006 | Jul 26, 2006 | EOG Resources, Inc. | Meeks Unit #2HH | 8,500 | 25131081 |
| 622802Amendment | Jul 26, 2006 | Jul 26, 2006 | EOG Resources, Inc. | Meeks Unit #2HH | 8,500 | 25131081 |
| 622800 | Jul 26, 2006 | Jul 26, 2006 | EOG Resources, Inc. | Meeks Unit #1HH | 8,500 | 25131090 |
| 622281 | Jul 26, 2006 | Jul 26, 2006 | XTO Energy Inc. | Whitehead Unit #1HH | 12,000 | 25131062 |
| 622281Amendment | Jul 26, 2006 | Jul 26, 2006 | XTO Energy Inc. | Whitehead Unit #1HH | 12,000 | 25131062 |
| 623196 | Jul 25, 2006 | Jul 25, 2006 | EOG Resources, Inc. | Youngblood Unit #1HH | 7,000 | 25131092 |
| 623196Amendment | Jul 25, 2006 | Jul 25, 2006 | EOG Resources, Inc. | Youngblood Unit #1HH | 7,000 | 25131092 |
| 623094 | Jul 25, 2006 | Jul 25, 2006 | Sullivan, Hollis R. Inc. | Kendrick #1HH | 8,700 | 25131091 |
| 623036 | Jul 24, 2006 | Jul 24, 2006 | EOG Resources, Inc. | Hicks Family Trust Unit #1HH | 7,000 | 25131087 |
| 622983 | Jul 21, 2006 | Jul 21, 2006 | XTO Energy Inc. | Cleburne State Park #1HH | 12,000 | 25131084 |
| 622983Amendment | Jul 21, 2006 | Jul 21, 2006 | XTO Energy Inc. | Cleburne State Park #1HH | 12,000 | 25131084 |
| 622902 | Jul 20, 2006 | Jul 20, 2006 | North Texas Llano Operating Corp | Burleson "917" #1HH | 9,000 | 25131080 |
| 622756 | Jul 18, 2006 | Jul 18, 2006 | Adexco Operating Company | McElroy #1V | 7,500 | 25131079 |
| 622663 | Jul 17, 2006 | Jul 17, 2006 | XTO Energy Inc. | Owen #4HH | 12,000 | 25131078 |
| 622663Amendment | Jul 17, 2006 | Jul 17, 2006 | XTO Energy Inc. | Owen #4HH | 12,000 | 25131078 |
| 622661 | Jul 14, 2006 | Jul 14, 2006 | XTO Energy Inc. | Owen #3HH | 12,000 | 25131077 |
| 622661Amendment | Jul 14, 2006 | Jul 14, 2006 | XTO Energy Inc. | Owen #1HH | 12,000 | 25131077 |
| 622661Amendment | Jul 14, 2006 | Jul 14, 2006 | XTO Energy Inc. | Owen #1HH | 12,000 | 25131077 |
| 622491 | Jul 13, 2006 | Jul 13, 2006 | Devon Energy Production Co, L.P. | Guthrie, Thomas #6H | 9,000 | 25131075 |
| 622490 | Jul 13, 2006 | Jul 13, 2006 | Devon Energy Production Co, L.P. | Guthrie, Thomas #5H | 9,000 | 25131074 |
| 622489 | Jul 13, 2006 | Jul 13, 2006 | Devon Energy Production Co, L.P. | Guthrie, Thomas #4H | 9,000 | 25131073 |
| 622487 | Jul 13, 2006 | Jul 13, 2006 | Devon Energy Production Co, L.P. | Thomas Guthrie #3H | 9,000 | 25131072 |
| 622485 | Jul 13, 2006 | Jul 13, 2006 | Devon Energy Production Co, L.P. | Thomas Guthrie #2H | 9,000 | 25131071 |
| 621873 | Jul 13, 2006 | Jul 13, 2006 | XTO Energy Inc. | Puff #2HH | 12,000 | 25131076 |
| 621873Amendment | Jul 13, 2006 | Jul 13, 2006 | XTO Energy Inc. | Puff #2HH | 12,000 | 25131076 |
| 622419 | Jul 12, 2006 | Jul 12, 2006 | Devon Energy Production Co, L.P. | Nickelson, Gary #1H | 9,000 | 25131070 |
| 622405 | Jul 12, 2006 | Jul 12, 2006 | Devon Energy Production Co, L.P. | Tarver, John #1H | 9,000 | 25131069 |
| 622399 | Jul 12, 2006 | Jul 12, 2006 | Devon Energy Production Co, L.P. | Shipley, Karen et Al #1H | 9,000 | 25131068 |
| 622309 | Jul 12, 2006 | Jul 12, 2006 | Chesapeake Operating, Inc. | Marshall #2HH | 9,000 | 25131066 |
| 622335 | Jul 11, 2006 | Jul 11, 2006 | Devon Energy Production Co, L.P. | Churman, E. R. #1H | 9,000 | 25131067 |
| 622293 | Jul 11, 2006 | Jul 11, 2006 | EOG Resources, Inc. | Beil Unit #4HH | 7,000 | 25131065 |
| 622293Amendment | Jul 11, 2006 | Jul 11, 2006 | EOG Resources, Inc. | Beil Unit #4HH | 7,000 | 25131065 |
| 622293Amendment | Jul 11, 2006 | Jul 11, 2006 | EOG Resources, Inc. | Beil Unit #4HH | 7,000 | 25131065 |
| 622291 | Jul 11, 2006 | Jul 11, 2006 | EOG Resources, Inc. | Beil Unit #1HH | 7,000 | 25131064 |
| 622291Amendment | Jul 11, 2006 | Jul 11, 2006 | EOG Resources, Inc. | Beil Unit #1HH | 7,000 | 25131064 |
| 622288 | Jul 11, 2006 | Jul 11, 2006 | EOG Resources, Inc. | Beil Unit #2HH | 7,000 | 25131063 |
| 622116 | Jul 7, 2006 | Jul 7, 2006 | Chesapeake Operating, Inc. | Poteet-Shaw #3HH | 9,000 | 25131060 |
| 622115 | Jul 7, 2006 | Jul 7, 2006 | Chesapeake Operating, Inc. | Poteet-Shaw #2HH | 9,000 | 25131061 |
| 622106 | Jul 7, 2006 | Jul 7, 2006 | Chesapeake Operating, Inc. | Poteet-Shaw #1HH | 9,000 | 25131059 |