| 615773 | Mar 14, 2006 | Mar 14, 2006 | Devon Energy Production Co, L.P. | Larry Hubbard #1H | 9,000 | 25130841 |
| 615748 | Mar 13, 2006 | Mar 13, 2006 | EOG Resources, Inc. | Ronald Goodman #1HH | 7,000 | 25130840 |
| 615731 | Mar 13, 2006 | Mar 13, 2006 | Quicksilver Resources Inc. | Moe Szyslak #1HH | 6,600 | 25130839 |
| 615731Amendment | Mar 13, 2006 | Mar 13, 2006 | Quicksilver Resources Inc. | Szyslak, Moe #1HH | 6,600 | 25130839 |
| 615636 | Mar 13, 2006 | Mar 13, 2006 | Chesapeake Operating, Inc. | Neaves #2HH | 9,000 | 25130835 |
| 615636Amendment | Mar 13, 2006 | Mar 13, 2006 | Chesapeake Operating, Inc. | Neaves #2HH | 9,000 | 25130835 |
| 615021 | Mar 13, 2006 | Mar 13, 2006 | XTO Energy Inc. | Warren Unit #1HH | 11,000 | 25130838 |
| 615021Amendment | Mar 13, 2006 | Mar 13, 2006 | XTO Energy Inc. | Warren Unit #1HH | 11,000 | 25130838 |
| 615021Amendment | Mar 13, 2006 | Mar 13, 2006 | XTO Energy Inc. | Warren Unit #1HH | 11,000 | 25130838 |
| 615668 | Mar 10, 2006 | Mar 10, 2006 | Adexco Operating Company | Comer #1HH | 6,800 | 25130837 |
| 615556 | Mar 9, 2006 | Mar 9, 2006 | Devon Energy Production Co, L.P. | Ricky Frazier #1H | 9,000 | 25130833 |
| 615547 | Mar 9, 2006 | Mar 9, 2006 | Williams Prod. Gulf Coast, L.P. | Bourne #1HH | 8,200 | 25130832 |
| 615518 | Mar 8, 2006 | Mar 8, 2006 | J-W Operating Co. | Yancey #1HH | 13,000 | 25130831 |
| 615467 | Mar 8, 2006 | Mar 8, 2006 | Devon Energy Production Co, L.P. | Alvarado Willow Springs Rnch GU3 #1H | 9,000 | 25130830 |
| 615145 | Mar 8, 2006 | Mar 8, 2006 | EOG Resources, Inc. | Campbell Unit #6HH | 9,000 | 25130827 |
| 615370 | Mar 7, 2006 | Mar 7, 2006 | EOG Resources, Inc. | Lowrance C Unit #1HH | 9,000 | 25130829 |
| 615283 | Mar 7, 2006 | Mar 7, 2006 | Sundance Resources, Inc. | Prather #1HH | 7,500 | 25130828 |
| 615283Amendment | Mar 7, 2006 | Mar 7, 2006 | BP Operating Company, LLC | Prather #1HH | 7,500 | 25130828 |
| 615102 | Mar 7, 2006 | Mar 7, 2006 | EOG Resources, Inc. | J. W. Matlock Unit #2HH | 7,000 | 25130825 |
| 615102Amendment | Mar 7, 2006 | Mar 7, 2006 | EOG Resources, Inc. | J. W. Matlock Unit #2HH | 7,000 | 25130825 |
| 615272 | Mar 6, 2006 | Mar 6, 2006 | EOG Resources, Inc. | Roshell Matlock Unit #1HH | 7,000 | 25130826 |
| 615272Amendment | Mar 6, 2006 | Mar 6, 2006 | EOG Resources, Inc. | Roshell Matlock Unit #1HH | 7,000 | 25130826 |
| 615254 | Mar 6, 2006 | Mar 6, 2006 | Devon Energy Production Co, L.P. | Gary Blackwell #1H | 9,000 | 25130824 |
| 615144 | Mar 3, 2006 | Mar 3, 2006 | North Texas Llano Operating Corp | Smith #1HH | 8,900 | 25130823 |
| 614933 | Mar 3, 2006 | Mar 3, 2006 | EOG Resources, Inc. | Massey Unit #7HH | 7,000 | 25130821 |
| 614930 | Mar 3, 2006 | Mar 3, 2006 | EOG Resources, Inc. | Massey Unit #6HH | 7,000 | 25130820 |
| 614930Amendment | Mar 3, 2006 | Mar 3, 2006 | EOG Resources, Inc. | Massey Unit #6HH | 10,000 | 25130820 |
| 615039 | Mar 1, 2006 | Mar 1, 2006 | Devon Energy Production Co, L.P. | Morgan, Edmund #1H | 9,000 | 25130822 |
| 615039Amendment | Mar 1, 2006 | Mar 1, 2006 | Devon Energy Production Co, L.P. | Morgan, Edmund #1H | 9,000 | 25130822 |
| 614953 | Feb 28, 2006 | Feb 28, 2006 | Chief Oil & Gas LLC ** | Bontke Trust Unit #1HH | 8,900 | 25130818 |
| 614929 | Feb 27, 2006 | Feb 27, 2006 | Devon Energy Production Co, L.P. | Richard Shaw #1H | 9,000 | 25130817 |
| 614859 | Feb 27, 2006 | Feb 27, 2006 | Chesapeake Operating, Inc. | Parnell #7HH | 9,000 | 25130816 |
| 614825 | Feb 27, 2006 | Feb 27, 2006 | Bridgeport Tank Trucks, Ltd. | Hanna #1 | 12,000 | 25130815 |
| 614478 | Feb 27, 2006 | Feb 27, 2006 | EOG Resources, Inc. | Leonard Unit #1RHH | 9,000 | 25130810 |
| 614758 | Feb 23, 2006 | Feb 23, 2006 | Four Sevens Operating Co., Ltd. | Hyder D #4H | 9,000 | 25130814 |
| 614682 | Feb 23, 2006 | Feb 23, 2006 | Chesapeake Operating, Inc. | Norton #1HH | 9,000 | 25130813 |
| 614484 | Feb 23, 2006 | Feb 23, 2006 | EOG Resources, Inc. | Eagle Ford "B" Unit #4HH | 9,000 | 25130811 |
| 614484Amendment | Feb 23, 2006 | Feb 23, 2006 | EOG Resources, Inc. | Eagle Ford "C" Unit #1HH | 8,800 | 25130811 |
| 614412 | Feb 23, 2006 | Feb 23, 2006 | EOG Resources, Inc. | J. W. Matlock Unit #1HH | 7,000 | 25130808 |
| 614412Amendment | Feb 23, 2006 | Feb 23, 2006 | EOG Resources, Inc. | J. W. Matlock Unit #1HH | 7,000 | 25130808 |
| 614411 | Feb 23, 2006 | Feb 23, 2006 | EOG Resources, Inc. | Todd Unit #3HH | 7,000 | 25130809 |
| 614410 | Feb 23, 2006 | Feb 23, 2006 | EOG Resources, Inc. | Todd Unit #2HH | 7,000 | 25130807 |
| 614668 | Feb 22, 2006 | Feb 22, 2006 | North Texas Llano Operating Corp | Owens #1H | 8,900 | 25130812 |
| 614668Amendment | Feb 22, 2006 | Feb 22, 2006 | North Texas Llano Operating Corp | Owens #1H | 8,900 | 25130812 |
| 614573 | Feb 21, 2006 | Feb 21, 2006 | Republic Energy Inc. | Bowling #1HH | 6,350 | 25130806 |
| 614573Amendment | Feb 21, 2006 | Feb 21, 2006 | Chesapeake Operating, Inc. | Bowling #1HH | 6,350 | 25130806 |
| 614573Amendment | Feb 21, 2006 | Feb 21, 2006 | Chesapeake Operating, Inc. | Bowling #1HH | 9,000 | 25130806 |
| 614087 | Feb 21, 2006 | Feb 21, 2006 | Arrington,david H. Oil & Gas,inc | County Line HI DY HO #1HH | 7,200 | 25130798 |
| 614087Amendment | Feb 21, 2006 | Feb 21, 2006 | Arrington,david H. Oil & Gas,inc | County Line HI DY HO #1HH | 9,000 | 25130798 |
| 614044 | Feb 21, 2006 | Feb 21, 2006 | EOG Resources, Inc. | Brice Unit #2HH | 7,000 | 25130796 |
| 614419 | Feb 17, 2006 | Feb 17, 2006 | Chief Oil & Gas LLC | Miller #1HH | 8,900 | 25130805 |
| 614378 | Feb 16, 2006 | Feb 16, 2006 | Chesapeake Operating, Inc. | Williams #8HH | 9,000 | 25130804 |
| 614369 | Feb 16, 2006 | Feb 16, 2006 | Chesapeake Operating, Inc. | Manuel Labor #2HH | 9,000 | 25130803 |
| 614330 | Feb 16, 2006 | Feb 16, 2006 | Devon Energy Production Co, L.P. | Stoner Family Partners #1H | 9,000 | 25130801 |
| 614329 | Feb 16, 2006 | Feb 16, 2006 | Four Sevens Operating Co., Ltd. | Featherston #1H | 9,000 | 25130802 |
| 614328 | Feb 16, 2006 | Feb 16, 2006 | Chesapeake Operating, Inc. | Hadley #3HH | 9,000 | 25130800 |
| 614312 | Feb 15, 2006 | Feb 15, 2006 | Devon Energy Production Co, L.P. | Jackson, Stanley #1H | 9,000 | 25130799 |
| 614195 | Feb 15, 2006 | Feb 15, 2006 | EOG Resources, Inc. | Set Back B Unit #3HH | 8,600 | 25130797 |
| 613982 | Feb 15, 2006 | Feb 15, 2006 | Devon Energy Production Co, L.P. | Charles D. Evans #1H | 9,000 | 25130790 |
| 614153 | Feb 14, 2006 | Feb 14, 2006 | Devon Energy Production Co, L.P. | Mayfield #1H | 9,000 | 25130795 |
| 614114 | Feb 14, 2006 | Feb 14, 2006 | Chesapeake Operating, Inc. | Cooper #6HH | 9,000 | 25130794 |
| 614082 | Feb 14, 2006 | Feb 14, 2006 | Chesapeake Operating, Inc. | Victory Church #1HH | 9,000 | 25130793 |
| 614082Amendment | Feb 14, 2006 | Feb 14, 2006 | Chesapeake Operating, Inc. | Victory Church #1HH | 9,000 | 25130793 |
| 613979 | Feb 14, 2006 | Feb 14, 2006 | Chesapeake Operating, Inc. | Falvel #8HH | 9,000 | 25130791 |
| 614024 | Feb 10, 2006 | Feb 10, 2006 | Chesapeake Operating, Inc. | Hulce #1HH | 9,000 | 25130792 |
| 613977 | Feb 10, 2006 | Feb 10, 2006 | Chesapeake Operating, Inc. | Falvel #6HH | 9,000 | 25130789 |
| 613566 | Feb 10, 2006 | Feb 10, 2006 | EOG Resources, Inc. | Casstevens Unit #6HH | 8,600 | 25130786 |
| 613565 | Feb 10, 2006 | Feb 10, 2006 | EOG Resources, Inc. | Casstevens Unit #5HH | 8,700 | 25130785 |
| 613563 | Feb 10, 2006 | Feb 10, 2006 | EOG Resources, Inc. | Casstevens Unit #3HH | 8,600 | 25130784 |
| 613562 | Feb 10, 2006 | Feb 10, 2006 | EOG Resources, Inc. | Casstevens Unit #2HH | 9,000 | 25130783 |
| 613644 | Feb 8, 2006 | Feb 8, 2006 | EOG Resources, Inc. | Hardcastle Unit #1HH | 7,000 | 25130788 |
| 613644Amendment | Feb 8, 2006 | Feb 8, 2006 | EOG Resources, Inc. | Hardcastle Unit #1HH | 7,000 | 25130788 |
| 613458 | Feb 7, 2006 | Feb 7, 2006 | EOG Resources, Inc. | Set/Back "C" Unit #2HH | 8,400 | 25130782 |
| 613436 | Feb 7, 2006 | Feb 7, 2006 | EOG Resources, Inc. | Set/Back "D" Unit #2HH | 8,400 | 25130781 |
| 613685 | Feb 6, 2006 | Feb 6, 2006 | Reichmann Petroleum Corp. | Moncrief #1HH | 10,500 | 25130787 |
| 613377 | Feb 6, 2006 | Feb 6, 2006 | EOG Resources, Inc. | Raam #2HH | 8,400 | 25130780 |
| 613580 | Feb 3, 2006 | Feb 3, 2006 | EOG Resources, Inc. | Bowerman Unit #1HH | 8,000 | 25130779 |
| 613572 | Feb 3, 2006 | Feb 3, 2006 | Chief Oil & Gas LLC | Buck Unit #1HH | 8,900 | 25130778 |
| 613551 | Feb 3, 2006 | Feb 3, 2006 | Chesapeake Operating, Inc. | Williams #7HH | 9,000 | 25130776 |
| 613549 | Feb 3, 2006 | Feb 3, 2006 | Chesapeake Operating, Inc. | Stephens #2HH | 9,000 | 25130777 |
| 613542 | Feb 3, 2006 | Feb 3, 2006 | Chesapeake Operating, Inc. | Williams #4HH | 9,000 | 25130775 |
| 613522 | Feb 3, 2006 | Feb 3, 2006 | J-W Operating Co. | Durbin #1HH | 13,000 | 25130774 |
| 613473 | Feb 2, 2006 | Feb 2, 2006 | Devon Energy Production Co, L.P. | Bob West #1H | 9,000 | 25130773 |
| 613469 | Feb 2, 2006 | Feb 2, 2006 | Devon Energy Production Co, L.P. | Hutchison Herefords #1H | 9,000 | 25130772 |
| 613466 | Feb 2, 2006 | Feb 2, 2006 | Devon Energy Production Co, L.P. | Sharon McCaffity #1H | 9,000 | 25130771 |
| 613422 | Feb 1, 2006 | Feb 1, 2006 | Williams Prod. Gulf Coast, L.P. | Collins #1HH | 8,200 | 25130770 |
| 613422Amendment | Feb 1, 2006 | Feb 1, 2006 | Williams Prod. Gulf Coast, L.P. | Collins #1HH | 8,200 | 25130770 |
| 613394 | Feb 1, 2006 | Feb 1, 2006 | Williams Prod. Gulf Coast, L.P. | Bransom #1HH | 8,300 | 25130769 |
| 613394Amendment | Feb 1, 2006 | Feb 1, 2006 | Williams Prod. Gulf Coast, L.P. | Bransom #1HH | 8,300 | 25130769 |
| 613378 | Feb 1, 2006 | Feb 1, 2006 | EOG Resources, Inc. | Leonard Unit #1HH | 9,000 | 25130768 |
| 613171 | Feb 1, 2006 | Feb 1, 2006 | EOG Resources, Inc. | Kolar Unit #5HH | 7,000 | 25130764 |
| 613170 | Feb 1, 2006 | Feb 1, 2006 | EOG Resources, Inc. | Kolar Unit #4HH | 7,000 | 25130765 |
| 613315 | Jan 31, 2006 | Jan 31, 2006 | Williams Prod. Gulf Coast, L.P. | Schultz #3 HH | 8,250 | 25130767 |
| 613315Amendment | Jan 31, 2006 | Jan 31, 2006 | Williams Prod. Gulf Coast, L.P. | Ball Heirs #5HH | 8,250 | 25130767 |
| 613306 | Jan 31, 2006 | Jan 31, 2006 | Devon Energy Production Co, L.P. | Johnson County SWD #2 | 11,700 | 25130766 |
| 613294 | Jan 31, 2006 | Jan 31, 2006 | XTO Energy Inc. | Harper Cattle #C 3HH | 11,000 | 25130763 |
| 613294Amendment | Jan 31, 2006 | Jan 31, 2006 | XTO Energy Inc. | Harper Cattle #C 3HH | 11,000 | 25130763 |
| 613242 | Jan 30, 2006 | Jan 30, 2006 | Burlington Resources O & G Co LP | Georges Creek Ranch #13HH | 9,000 | 25130762 |
| 613118 | Jan 26, 2006 | Jan 26, 2006 | Devon Energy Production Co, L.P. | Kurt Reineck #1H | 9,000 | 25130761 |
| 613078 | Jan 26, 2006 | Jan 26, 2006 | Devon Energy Production Co, L.P. | A. T. Angel #1H | 9,000 | 25130760 |