| 676967Amendment | Jan 8, 2009 | Jan 8, 2009 | Chesapeake Operating, Inc. | City of Cleburne #12HH | 9,000 | 25133509 |
| 676919 | Jan 8, 2009 | Jan 8, 2009 | Chesapeake Operating, Inc. | Gann #4HH | 9,000 | 25133505 |
| 676966 | Jan 7, 2009 | Jan 7, 2009 | Chesapeake Operating, Inc. | City of Cleburne #4HH | 9,000 | 25133513 |
| 676937 | Jan 7, 2009 | Jan 7, 2009 | Titan Operating, LLC | Graycliff #2HH | 8,500 | 25133508 |
| 676931 | Jan 7, 2009 | Jan 7, 2009 | Titan Operating, LLC | Graycliff #1HH | 8,500 | 25133506 |
| 676853 | Jan 7, 2009 | Jan 7, 2009 | XTO Energy Inc. | Winnett Unit #3HH | 11,000 | 25133504 |
| 676853Amendment | Jan 7, 2009 | Jan 7, 2009 | XTO Energy Inc. | Winnett Unit #3HH | 11,000 | 25133504 |
| 676852 | Jan 7, 2009 | Jan 7, 2009 | Range Production Company | Wardlay #7HH | 9,000 | 25133503 |
| 676851 | Jan 7, 2009 | Jan 7, 2009 | Range Production Company | Wardlay #6HH | 9,000 | 25133502 |
| 674111Amendment | Jan 7, 2009 | Jan 7, 2009 | EOG Resources, Inc. | Hudgins Unit #7HH | 10,000 | 25133415 |
| 676715 | Jan 5, 2009 | Jan 5, 2009 | EOG Resources, Inc. | Gallagher Unit #4H | 10,000 | 25133499 |
| 676224 | Jan 5, 2009 | Jan 5, 2009 | Devon Energy Production Co, L.P. | Walls, Woody #3HH | 9,000 | 25133491 |
| 676716 | Jan 2, 2009 | Jan 2, 2009 | EOG Resources, Inc. | Gallagher Unit #5HH | 10,000 | 25133500 |
| 676706 | Jan 2, 2009 | Jan 2, 2009 | Chesapeake Operating, Inc. | Kinnear #3HH | 9,000 | 25133498 |
| 676706Amendment | Jan 2, 2009 | Jan 2, 2009 | Chesapeake Operating, Inc. | Kinnear #3HH | 9,000 | 25133498 |
| 676704 | Jan 2, 2009 | Jan 2, 2009 | Chesapeake Operating, Inc. | Kinnear #1HH | 9,000 | 25133497 |
| 676704Amendment | Jan 2, 2009 | Jan 2, 2009 | Chesapeake Operating, Inc. | Kinnear #1HH | 9,000 | 25133497 |
| 676655 | Jan 2, 2009 | Jan 2, 2009 | Range Production Company | Bruner-Laramore Unit #1HH | 9,000 | 25133496 |
| 676655Amendment | Jan 2, 2009 | Jan 2, 2009 | Range Production Company | Bruner-Laramore Unit #1HH | 9,000 | 25133496 |
| 676540 | Dec 30, 2008 | Dec 30, 2008 | EOG Resources, Inc. | Gallagher Unit #3HH | 10,000 | 25133495 |
| 674100Amendment | Dec 30, 2008 | Dec 30, 2008 | EOG Resources, Inc. | Wilkes Unit #5HH | 10,000 | 25133410 |
| 663635Amendment | Dec 30, 2008 | Dec 30, 2008 | EOG Resources, Inc. | Eagle Ford B Unit #8HH | 10,000 | 25133054 |
| 657798Amendment | Dec 30, 2008 | Dec 30, 2008 | Chesapeake Operating, Inc. | Lonestar #4HH | 9,000 | 25132763 |
| 676455 | Dec 22, 2008 | Dec 22, 2008 | Chesapeake Operating, Inc. | Richburg #4HH | 9,000 | 25133493 |
| 676452 | Dec 22, 2008 | Dec 22, 2008 | Chesapeake Operating, Inc. | Richburg #3HH | 9,000 | 25133492 |
| 674132 | Dec 22, 2008 | Dec 22, 2008 | Pgi Operating, LLC | Granite #1HH | 11,500 | 25133494 |
| 651369Amendment | Dec 22, 2008 | Dec 22, 2008 | EOG Resources, Inc. | Tolbert Unit #10HH | 10,000 | 25132461 |
| 651368Amendment | Dec 22, 2008 | Dec 22, 2008 | EOG Resources, Inc. | Tolbert Unit #9HH | 10,000 | 25132460 |
| 651363Amendment | Dec 22, 2008 | Dec 22, 2008 | EOG Resources, Inc. | Tolbert Unit #8HH | 10,000 | 25132458 |
| 651361Amendment | Dec 22, 2008 | Dec 22, 2008 | EOG Resources, Inc. | Tolbert Unit #7HH | 10,000 | 25132459 |
| 651359Amendment | Dec 22, 2008 | Dec 22, 2008 | EOG Resources, Inc. | Tolbert Unit #6HH | 10,000 | 25132457 |
| 651355Amendment | Dec 22, 2008 | Dec 22, 2008 | EOG Resources, Inc. | Tolbert Unit #5HH | 10,000 | 25132456 |
| 651349Amendment | Dec 22, 2008 | Dec 22, 2008 | EOG Resources, Inc. | Tolbert Unit #4HH | 10,000 | 25132455 |
| 651341Amendment | Dec 22, 2008 | Dec 22, 2008 | EOG Resources, Inc. | Tolbert Unit #3HH | 10,000 | 25132454 |
| 676214 | Dec 18, 2008 | Dec 18, 2008 | Devon Energy Production Co, L.P. | Walls, Woody #2HH | 9,000 | 25133490 |
| 676192 | Dec 18, 2008 | Dec 18, 2008 | Devon Energy Production Co, L.P. | Walls, Woody #5HH | 9,000 | 25133488 |
| 676192Amendment | Dec 18, 2008 | Dec 18, 2008 | Devon Energy Production Co, L.P. | Walls, Woody #5HH | 9,000 | 25133488 |
| 674099Amendment | Dec 17, 2008 | Dec 17, 2008 | EOG Resources, Inc. | Wilkes Unit #4HH | 10,000 | 25133412 |
| 676205 | Dec 16, 2008 | Dec 16, 2008 | Devon Energy Production Co, L.P. | Walls, Woody #1HH | 9,000 | 25133489 |
| 659654Amendment | Dec 16, 2008 | Dec 16, 2008 | XTO Energy Inc. | K L Collins #1HH | 11,500 | 25132866 |
| 676128 | Dec 12, 2008 | Dec 12, 2008 | EOG Resources, Inc. | Lowrance C Unit #4 | 10,000 | 25133486 |
| 676126 | Dec 12, 2008 | Dec 12, 2008 | EOG Resources, Inc. | Lowrance C Unit #3HH | 10,000 | 25133487 |
| 675979 | Dec 11, 2008 | Dec 11, 2008 | Chesapeake Operating, Inc. | Willow Creeek A #3HH | 9,000 | 25133485 |
| 675978 | Dec 11, 2008 | Dec 11, 2008 | Chesapeake Operating, Inc. | Willow Creek A #2HH | 9,000 | 25133484 |
| 675958 | Dec 11, 2008 | Dec 11, 2008 | EOG Resources, Inc. | Walking T Ranch Unit #21HH | 10,000 | 25133483 |
| 660245Amendment | Dec 9, 2008 | Dec 9, 2008 | XTO Energy Inc. | Ruth Turner Unit #2HH | 12,000 | 25132887 |
| 675826 | Dec 8, 2008 | Dec 8, 2008 | Williams Prod. Gulf Coast, L.P. | Bransom South #6HH | 8,120 | 25133482 |
| 675825 | Dec 8, 2008 | Dec 8, 2008 | EOG Resources, Inc. | Fleming Trust Unit #3HH | 10,000 | 25133481 |
| 675754 | Dec 5, 2008 | Dec 5, 2008 | Chesapeake Operating, Inc. | La Juan Clark #2HH | 9,000 | 25133480 |
| 675754Amendment | Dec 5, 2008 | Dec 5, 2008 | Chesapeake Operating, Inc. | Kinnear #2HH | 9,000 | 25133480 |
| 664375Amendment | Dec 5, 2008 | Dec 5, 2008 | Chesapeake Operating, Inc. | Cordelia #1HH | 9,000 | 25133056 |
| 675727 | Dec 3, 2008 | Dec 3, 2008 | Chesapeake Operating, Inc. | Gearhart #1HH | 9,000 | 25133479 |
| 675727Amendment | Dec 3, 2008 | Dec 3, 2008 | Chesapeake Operating, Inc. | Gearhart #1HH | 9,000 | 25133479 |
| 667376Amendment | Dec 3, 2008 | Dec 3, 2008 | Chesapeake Operating, Inc. | Burleson Elks #3HH | 9,000 | 25133183 |
| 672275 | Dec 2, 2008 | Dec 2, 2008 | Chesapeake Operating, Inc. | Holly #5HH | 9,000 | 25133356 |
| 672268 | Dec 2, 2008 | Dec 2, 2008 | Chesapeake Operating, Inc. | Holly #4HH | 9,000 | 25133360 |
| 670558Amendment | Dec 2, 2008 | Dec 2, 2008 | EOG Resources, Inc. | Page Unit #3HH | 10,000 | 25133295 |
| 675441 | Nov 26, 2008 | Nov 26, 2008 | EOG Resources, Inc. | Wilshire Unit #6HH | 10,000 | 25133476 |
| 675440 | Nov 26, 2008 | Nov 26, 2008 | EOG Resources, Inc. | Wilshire Unit #5HH | 10,000 | 25133475 |
| 675408 | Nov 26, 2008 | Nov 26, 2008 | Wynn-Crosby Operating, Ltd. | Lawrence #2HH | 9,000 | 25133474 |
| 675265 | Nov 26, 2008 | Nov 26, 2008 | EOG Resources, Inc. | Gallagher Unit #2HH | 10,000 | 25133477 |
| 675265Amendment | Nov 26, 2008 | Nov 26, 2008 | EOG Resources, Inc. | Gallagher Unit #2HH | 10,000 | 25133477 |
| 675265Amendment | Nov 26, 2008 | Nov 26, 2008 | EOG Resources, Inc. | Gallagher Unit #2HH | 8,999 | 25133477 |
| 675262 | Nov 26, 2008 | Nov 26, 2008 | EOG Resources, Inc. | Gallagher Unit #1HH | 10,000 | 25133478 |
| 670439 | Nov 26, 2008 | Nov 26, 2008 | Devon Energy Production Co, L.P. | Peyco Family #1HH | 9,000 | 25133267 |
| 675363 | Nov 25, 2008 | Nov 25, 2008 | Devon Energy Production Co, L.P. | Tarver, John #2HH | 9,000 | 25133472 |
| 675360 | Nov 25, 2008 | Nov 25, 2008 | Devon Energy Production Co, L.P. | Tarver, John #4HH | 9,000 | 25133473 |
| 675357 | Nov 25, 2008 | Nov 25, 2008 | Devon Energy Production Co, L.P. | Tarver, John #5HH | 9,000 | 25133471 |
| 675057 | Nov 25, 2008 | Nov 25, 2008 | Chesapeake Operating, Inc. | Terry #4HH | 12,000 | 25133469 |
| 675062 | Nov 20, 2008 | Nov 20, 2008 | Chesapeake Operating, Inc. | Terry #5HH | 12,000 | 25133470 |
| 675003 | Nov 20, 2008 | Nov 20, 2008 | Devon Energy Production Co, L.P. | King, John Edward #49HH | 9,000 | 25133466 |
| 672430 | Nov 20, 2008 | Nov 20, 2008 | Williams Prod. Gulf Coast, L.P. | Bransom #5HH | 7,730 | 25133361 |
| 675020 | Nov 19, 2008 | Nov 19, 2008 | Williams Prod. Gulf Coast, L.P. | Dozier #4HH | 7,575 | 25133467 |
| 674971 | Nov 18, 2008 | Nov 18, 2008 | EOG Resources, Inc. | Pat Gage #3HH | 10,000 | 25133465 |
| 674971Amendment | Nov 18, 2008 | Nov 18, 2008 | EOG Resources, Inc. | Pat Gage #3HH | 10,000 | 25133465 |
| 674968 | Nov 18, 2008 | Nov 18, 2008 | EOG Resources, Inc. | Pat Gage #2HH | 10,000 | 25133464 |
| 674968Amendment | Nov 18, 2008 | Nov 18, 2008 | EOG Resources, Inc. | Pat Gage #2HH | 10,000 | 25133464 |
| 674965 | Nov 18, 2008 | Nov 18, 2008 | EOG Resources, Inc. | Pat Gage #1HH | 10,000 | 25133463 |
| 674965Amendment | Nov 18, 2008 | Nov 18, 2008 | EOG Resources, Inc. | Pat Gage #1HH | 10,000 | 25133463 |
| 674889 | Nov 17, 2008 | Nov 17, 2008 | XTO Energy Inc. | Kimbrough Dunlap Unit #2HH | 11,000 | 25133461 |
| 674889Amendment | Nov 17, 2008 | Nov 17, 2008 | XTO Energy Inc. | Kimbrough Dunlap Unit #2HH | 11,000 | 25133461 |
| 674888 | Nov 17, 2008 | Nov 17, 2008 | Williams Prod. Gulf Coast, L.P. | Dozier #5HH | 7,575 | 25133460 |
| 674818 | Nov 17, 2008 | Nov 17, 2008 | EOG Resources, Inc. | Beckham Unit #8HH | 10,000 | 25133459 |
| 674817 | Nov 17, 2008 | Nov 17, 2008 | EOG Resources, Inc. | Beckham Unit #7HH | 10,000 | 25133458 |
| 674816 | Nov 17, 2008 | Nov 17, 2008 | EOG Resources, Inc. | Beckham Unit #6HH | 10,000 | 25133457 |
| 674814 | Nov 17, 2008 | Nov 17, 2008 | Williams Prod. Gulf Coast, L.P. | Dozier #3HH | 7,575 | 25133456 |
| 674811 | Nov 17, 2008 | Nov 17, 2008 | Williams Prod. Gulf Coast, L.P. | Dozier #2HH | 7,575 | 25133455 |
| 674725 | Nov 17, 2008 | Nov 17, 2008 | XTO Energy Inc. | Mfg #1HH | 11,000 | 25133446 |
| 674725Amendment | Nov 17, 2008 | Nov 17, 2008 | XTO Energy Inc. | Mfg #1HH | 11,000 | 25133446 |
| 674708 | Nov 17, 2008 | Nov 17, 2008 | Burlington Resources O & G Co LP | Georges Creek Ranch #31HH | 9,000 | 25133445 |
| 674706 | Nov 17, 2008 | Nov 17, 2008 | Chesapeake Operating, Inc. | Skaggs #4HH | 9,000 | 25133444 |
| 674580 | Nov 17, 2008 | Nov 17, 2008 | Chesapeake Operating, Inc. | Sandlin #4HH | 9,000 | 25133449 |
| 674580Amendment | Nov 17, 2008 | Nov 17, 2008 | Chesapeake Operating, Inc. | Sandlin #4HH | 9,000 | 25133449 |
| 674580Amendment | Nov 17, 2008 | Nov 17, 2008 | Chesapeake Operating, Inc. | Sandlin #4HH | 9,000 | 25133449 |
| 674579 | Nov 17, 2008 | Nov 17, 2008 | Chesapeake Operating, Inc. | Sandlin #3HH | 9,000 | 25133448 |
| 674579Amendment | Nov 17, 2008 | Nov 17, 2008 | Chesapeake Operating, Inc. | Sandlin #3HH | 9,000 | 25133448 |
| 674578 | Nov 17, 2008 | Nov 17, 2008 | Chesapeake Operating, Inc. | Sandlin #2HH | 9,000 | 25133447 |
| 674578Amendment | Nov 17, 2008 | Nov 17, 2008 | Chesapeake Operating, Inc. | Sandlin #2HH | 9,000 | 25133447 |
| 667644Amendment | Nov 17, 2008 | Nov 17, 2008 | XTO Energy Inc. | Village Creek Unit #1HH | 11,000 | 25133190 |
| 658745Amendment | Nov 17, 2008 | Nov 17, 2008 | XTO Energy Inc. | Sharon Damron Unit #1HH | 9,800 | 25132809 |