| 657719Amendment | Apr 2, 2008 | Apr 2, 2008 | XTO Energy Inc. | RFS Unit #3HH | 11,000 | 25132767 |
| 657664 | Mar 31, 2008 | Mar 31, 2008 | EOG Resources, Inc. | Lett Unit #2HH | 10,000 | 25132760 |
| 657662 | Mar 31, 2008 | Mar 31, 2008 | XTO Energy Inc. | RFS Unit #2HH | 11,000 | 25132768 |
| 657662Amendment | Mar 31, 2008 | Mar 31, 2008 | XTO Energy Inc. | RFS Unit #2HH | 11,000 | 25132768 |
| 657661 | Mar 31, 2008 | Mar 31, 2008 | Chesapeake Operating, Inc. | Piester Place #2HH | 9,000 | 25132759 |
| 657611 | Mar 31, 2008 | Mar 31, 2008 | EOG Resources, Inc. | Thelma Louise Unit #1HH | 10,000 | 25132753 |
| 657611Amendment | Mar 31, 2008 | Mar 31, 2008 | EOG Resources, Inc. | Thelma Louise Unit #1HH | 10,000 | 25132753 |
| 657658 | Mar 28, 2008 | Mar 28, 2008 | Chesapeake Operating, Inc. | Piester Place #1HH | 9,000 | 25132757 |
| 657657 | Mar 28, 2008 | Mar 28, 2008 | EOG Resources, Inc. | Fry Unit #5H | 10,000 | 25132758 |
| 657657Amendment | Mar 28, 2008 | Mar 28, 2008 | EOG Resources, Inc. | Fry Unit #5HH | 10,000 | 25132758 |
| 657651 | Mar 28, 2008 | Mar 28, 2008 | EOG Resources, Inc. | Fry Unit #4H | 10,000 | 25132756 |
| 657614 | Mar 28, 2008 | Mar 28, 2008 | EOG Resources, Inc. | Thelma Louise Unit #3HH | 10,000 | 25132755 |
| 657614Amendment | Mar 28, 2008 | Mar 28, 2008 | EOG Resources, Inc. | Thelma Louise Unit #3HH | 10,000 | 25132755 |
| 657613 | Mar 28, 2008 | Mar 28, 2008 | EOG Resources, Inc. | Thelma Louise Unit #2HH | 10,000 | 25132754 |
| 657613Amendment | Mar 28, 2008 | Mar 28, 2008 | EOG Resources, Inc. | Thelma Louise Unit #2HH | 10,000 | 25132754 |
| 657508 | Mar 28, 2008 | Mar 28, 2008 | Chesapeake Operating, Inc. | Nuner #3HH | 9,000 | 25132750 |
| 657507 | Mar 28, 2008 | Mar 28, 2008 | Chesapeake Operating, Inc. | Nuner #2HH | 9,000 | 25132749 |
| 657505 | Mar 28, 2008 | Mar 28, 2008 | Chesapeake Operating, Inc. | Nuner #1HH | 9,000 | 25132748 |
| 657548 | Mar 27, 2008 | Mar 27, 2008 | EOG Resources, Inc. | Lett Unit #3HH | 10,000 | 25132752 |
| 657517 | Mar 27, 2008 | Mar 27, 2008 | EOG Resources, Inc. | Lett Unit #4HH | 10,000 | 25132751 |
| 657413 | Mar 26, 2008 | Mar 26, 2008 | Quicksilver Resources Inc. | Nimrod #1HH | 6,600 | 25132747 |
| 657321 | Mar 26, 2008 | Mar 26, 2008 | XTO Energy Inc. | Demarais #1HH | 12,000 | 25132742 |
| 657321Amendment | Mar 26, 2008 | Mar 26, 2008 | XTO Energy Inc. | Demarais #1HH | 12,000 | 25132742 |
| 657378 | Mar 25, 2008 | Mar 25, 2008 | Devon Energy Production Co, L.P. | McClure #4HH | 9,000 | 25132746 |
| 657374 | Mar 25, 2008 | Mar 25, 2008 | Devon Energy Production Co, L.P. | McClure #1HH | 9,000 | 25132745 |
| 657358 | Mar 25, 2008 | Mar 25, 2008 | Williams Prod. Gulf Coast, L.P. | Colonel Spencer #1HH | 7,950 | 25132744 |
| 657358Amendment | Mar 25, 2008 | Mar 25, 2008 | Williams Prod. Gulf Coast, L.P. | Colonel Spencer #1HH | 7,950 | 25132744 |
| 657291 | Mar 25, 2008 | Mar 25, 2008 | Chesapeake Operating, Inc. | Dang #3HH | 9,000 | 25132741 |
| 657289 | Mar 25, 2008 | Mar 25, 2008 | Chesapeake Operating, Inc. | Dang #2HH | 9,000 | 25132740 |
| 657288 | Mar 25, 2008 | Mar 25, 2008 | Chesapeake Operating, Inc. | Dang #1HH | 9,000 | 25132739 |
| 657218 | Mar 25, 2008 | Mar 25, 2008 | Chesapeake Operating, Inc. | Allen #3HH | 9,000 | 25132738 |
| 657217 | Mar 25, 2008 | Mar 25, 2008 | Chesapeake Operating, Inc. | Allen #2HH | 9,000 | 25132737 |
| 657076 | Mar 25, 2008 | Mar 25, 2008 | Chesapeake Operating, Inc. | Peacock #2HH | 9,000 | 25132734 |
| 657328 | Mar 24, 2008 | Mar 24, 2008 | Chesapeake Operating, Inc. | Mountain Valley #1HH | 9,000 | 25132743 |
| 657328Amendment | Mar 24, 2008 | Mar 24, 2008 | Chesapeake Operating, Inc. | Mountain Valley #1HH | 9,000 | 25132743 |
| 657328Amendment | Mar 24, 2008 | Mar 24, 2008 | Chesapeake Operating, Inc. | Mountain Valley #1HH | 9,000 | 25132743 |
| 657071 | Mar 24, 2008 | Mar 24, 2008 | Chesapeake Operating, Inc. | Howington #3HH | 9,000 | 25132733 |
| 657082 | Mar 21, 2008 | Mar 21, 2008 | Chesapeake Operating, Inc. | Trinity Forge A #2HH | 9,000 | 25132736 |
| 657082Amendment | Mar 21, 2008 | Mar 21, 2008 | Chesapeake Operating, Inc. | Trinity Forge #2HH | 9,000 | 25132736 |
| 657082Amendment | Mar 21, 2008 | Mar 21, 2008 | Chesapeake Operating, Inc. | Trinity Forge #2HH | 9,000 | 25132736 |
| 657074 | Mar 21, 2008 | Mar 21, 2008 | Chesapeake Operating, Inc. | Trinity Forge #1HH | 9,000 | 25132735 |
| 657074Amendment | Mar 21, 2008 | Mar 21, 2008 | Chesapeake Operating, Inc. | Trinity Forge #1HH | 9,000 | 25132735 |
| 657069 | Mar 21, 2008 | Mar 21, 2008 | Chesapeake Operating, Inc. | Howington #2HH | 9,000 | 25132732 |
| 656956 | Mar 21, 2008 | Mar 21, 2008 | Chesapeake Operating, Inc. | Richeson #2HH | 9,000 | 25132729 |
| 656954 | Mar 21, 2008 | Mar 21, 2008 | Chesapeake Operating, Inc. | Richeson #1HH | 9,000 | 25132728 |
| 646584Amendment | Mar 21, 2008 | Mar 21, 2008 | XTO Energy Inc. | Trogden Unit #1HH | 11,000 | 25132251 |
| 655094 | Mar 20, 2008 | Mar 20, 2008 | Chesapeake Operating, Inc. | Panchasarp A #1HH | 9,000 | 25132629 |
| 655094Amendment | Mar 20, 2008 | Mar 20, 2008 | Chesapeake Operating, Inc. | Panchasarp A #1HH | 9,000 | 25132629 |
| 656952 | Mar 19, 2008 | Mar 19, 2008 | Chesapeake Operating, Inc. | Cullison #3HH | 9,000 | 25132727 |
| 656791 | Mar 19, 2008 | Mar 19, 2008 | Devon Energy Production Co, L.P. | Harrison, Pauline #1HH | 9,000 | 25132725 |
| 656817 | Mar 18, 2008 | Mar 18, 2008 | Chesapeake Operating, Inc. | Parnell #10HH | 9,000 | 25132726 |
| 656817Amendment | Mar 18, 2008 | Mar 18, 2008 | Chesapeake Operating, Inc. | Parnell #10HH | 9,000 | 25132726 |
| 656802 | Mar 14, 2008 | Mar 14, 2008 | Devon Energy Production Co, L.P. | Pauline Harrison #4HH | 9,000 | 25132723 |
| 656800 | Mar 14, 2008 | Mar 14, 2008 | Devon Energy Production Co, L.P. | Harrison, Pauline #2HH | 9,000 | 25132722 |
| 656777 | Mar 14, 2008 | Mar 14, 2008 | Chesapeake Operating, Inc. | Parnell #9HH | 9,000 | 25132721 |
| 656777Amendment | Mar 14, 2008 | Mar 14, 2008 | Chesapeake Operating, Inc. | Parnell #9HH | 9,000 | 25132721 |
| 656776 | Mar 14, 2008 | Mar 14, 2008 | Chesapeake Operating, Inc. | Parnell #3HH | 9,000 | 25132720 |
| 656776Amendment | Mar 14, 2008 | Mar 14, 2008 | Chesapeake Operating, Inc. | Parnell #3HH | 9,000 | 25132720 |
| 656762 | Mar 14, 2008 | Mar 14, 2008 | Devon Energy Production Co, L.P. | Mayfield #3H | 9,000 | 25132731 |
| 656750 | Mar 14, 2008 | Mar 14, 2008 | Devon Energy Production Co, L.P. | Mayfield #2H | 9,000 | 25132719 |
| 656740 | Mar 14, 2008 | Mar 14, 2008 | Devon Energy Production Co, L.P. | Pruitt #2HH | 9,000 | 25132730 |
| 656731 | Mar 14, 2008 | Mar 14, 2008 | Devon Energy Production Co, L.P. | Pruitt #1HH | 9,000 | 25132717 |
| 656575 | Mar 14, 2008 | Mar 14, 2008 | Devon Energy Production Co, L.P. | Glen Roof #1HH | 9,000 | 25132711 |
| 656646 | Mar 13, 2008 | Mar 13, 2008 | Devon Energy Production Co, L.P. | Hallman, William #3HH | 9,000 | 25132724 |
| 656645 | Mar 13, 2008 | Mar 13, 2008 | Devon Energy Production Co, L.P. | Hallman, William #2HH | 9,000 | 25132716 |
| 656643 | Mar 13, 2008 | Mar 13, 2008 | Devon Energy Production Co, L.P. | Hallman, William #4HH | 9,000 | 25132715 |
| 656613 | Mar 13, 2008 | Mar 13, 2008 | Chesapeake Operating, Inc. | Cullison #2HH | 9,000 | 25132714 |
| 656613Amendment | Mar 13, 2008 | Mar 13, 2008 | Chesapeake Operating, Inc. | Cullison #2HH | 9,000 | 25132714 |
| 656474 | Mar 13, 2008 | Mar 13, 2008 | Chesapeake Operating, Inc. | Holly #3HH | 9,000 | 25132708 |
| 656469 | Mar 13, 2008 | Mar 13, 2008 | Chesapeake Operating, Inc. | Hess #5HH | 9,000 | 25132704 |
| 656467 | Mar 13, 2008 | Mar 13, 2008 | Chesapeake Operating, Inc. | Hess #6HH | 9,000 | 25132707 |
| 656465 | Mar 13, 2008 | Mar 13, 2008 | Chesapeake Operating, Inc. | Hess #4HH | 9,000 | 25132703 |
| 656546 | Mar 12, 2008 | Mar 12, 2008 | Devon Energy Production Co, L.P. | William David #4HH | 9,000 | 25132710 |
| 656540 | Mar 12, 2008 | Mar 12, 2008 | Devon Energy Production Co, L.P. | William David #3HH | 9,000 | 25132709 |
| 656478 | Mar 11, 2008 | Mar 11, 2008 | Chesapeake Operating, Inc. | Panchasarp A #3HH | 9,000 | 25132713 |
| 656478Amendment | Mar 11, 2008 | Mar 11, 2008 | Chesapeake Operating, Inc. | Panchasarp A #3HH | 9,000 | 25132713 |
| 656478Amendment | Mar 11, 2008 | Mar 11, 2008 | Chesapeake Operating, Inc. | Panchasarp A #3HH | 9,000 | 25132713 |
| 656478Amendment | Mar 11, 2008 | Mar 11, 2008 | Chesapeake Operating, Inc. | Panchasarp A #3HH | 9,000 | 25132713 |
| 656477 | Mar 11, 2008 | Mar 11, 2008 | Chesapeake Operating, Inc. | Panchasarp A #2HH | 9,000 | 25132712 |
| 656477Amendment | Mar 11, 2008 | Mar 11, 2008 | Chesapeake Operating, Inc. | Panchasarp A #2HH | 9,000 | 25132712 |
| 656477Amendment | Mar 11, 2008 | Mar 11, 2008 | Chesapeake Operating, Inc. | Panchasarp A #2HH | 9,000 | 25132712 |
| 656475 | Mar 11, 2008 | Mar 11, 2008 | Chesapeake Operating, Inc. | Acorn Family #2HH | 9,000 | 25132706 |
| 656172 | Mar 11, 2008 | Mar 11, 2008 | Chesapeake Operating, Inc. | Acorn Family #1HH | 9,000 | 25132718 |
| 656357 | Mar 10, 2008 | Mar 10, 2008 | EOG Resources, Inc. | Bowerman/Carter Unit #2HH | 10,000 | 25132702 |
| 656357Amendment | Mar 10, 2008 | Mar 10, 2008 | EOG Resources, Inc. | Bowerman/Carter Unit #2HH | 10,000 | 25132702 |
| 656352 | Mar 10, 2008 | Mar 10, 2008 | EOG Resources, Inc. | Bowerman/Carter Unit #1HH | 10,000 | 25132701 |
| 656352Amendment | Mar 10, 2008 | Mar 10, 2008 | EOG Resources, Inc. | Bowerman/Carter Unit #1HH | 10,000 | 25132701 |
| 656230 | Mar 10, 2008 | Mar 10, 2008 | Chesapeake Operating, Inc. | Finley #2HH | 9,000 | 25132699 |
| 656133 | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Warren Unit #4HH | 12,000 | 25132691 |
| 656133Amendment | Mar 10, 2008 | Mar 10, 2008 | XTO Energy Inc. | Warren Unit #4HH | 12,000 | 25132691 |
| 656295 | Mar 7, 2008 | Mar 7, 2008 | Devon Energy Production Co, L.P. | Little Place #6HH | 9,000 | 25132700 |
| 656209 | Mar 7, 2008 | Mar 7, 2008 | Chesapeake Operating, Inc. | Holly #1HH | 9,000 | 25132696 |
| 656209Amendment | Mar 7, 2008 | Mar 7, 2008 | Chesapeake Operating, Inc. | Holly #1HH | 9,000 | 25132696 |
| 631662Amendment | Mar 7, 2008 | Mar 7, 2008 | XTO Energy Inc. | Shipman Unit #A 1HH | 10,500 | 25131425 |
| 656217 | Mar 6, 2008 | Mar 6, 2008 | EOG Resources, Inc. | Zora Mae #4HH | 10,000 | 25132698 |
| 656214 | Mar 6, 2008 | Mar 6, 2008 | EOG Resources, Inc. | Zora Mae #3HH | 10,000 | 25132697 |
| 656136 | Mar 6, 2008 | Mar 6, 2008 | Chesapeake Operating, Inc. | Davenport #1HH | 9,000 | 25132693 |
| 656135 | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Warren Unit #5HH | 12,000 | 25132694 |
| 656135Amendment | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Warren Unit #5HH | 12,000 | 25132694 |
| 656130 | Mar 6, 2008 | Mar 6, 2008 | XTO Energy Inc. | Warren Unit #3HH | 12,000 | 25132692 |