| 712095Amendment | Mar 17, 2011 | Mar 17, 2011 | Sandridge Expl. and Prod., LLC | State Barrow #1 | 8,150 | 00342754 |
| 712040 | Mar 17, 2011 | Mar 17, 2011 | Sandridge Expl. and Prod., LLC | Boyd #9 | 4,900 | 00342751 |
| 712038 | Mar 17, 2011 | Mar 17, 2011 | Sandridge Expl. and Prod., LLC | Thornberry -F- #25 | 4,900 | 00342753 |
| 712037 | Mar 17, 2011 | Mar 17, 2011 | Sandridge Expl. and Prod., LLC | Thornberry, MA Consolidated I #43 | 4,900 | 00342752 |
| 711598 | Mar 16, 2011 | Mar 16, 2011 | Sandridge Expl. and Prod., LLC | Anita #21 | 4,900 | 00342750 |
| 710055 | Mar 16, 2011 | Mar 16, 2011 | Fasken Oil and Ranch, Ltd. | Fee 'BM' #1635 | 11,400 | 00342656 |
| 710049 | Mar 16, 2011 | Mar 16, 2011 | Fasken Oil and Ranch, Ltd. | Fee 'BM' #1634 | 11,400 | 00342655 |
| 710047 | Mar 16, 2011 | Mar 16, 2011 | Fasken Oil and Ranch, Ltd. | Fee 'BM' #1633 | 11,400 | 00342654 |
| 711873 | Mar 15, 2011 | Mar 15, 2011 | Pioneer Natural Res. USA, Inc. | University "6-39" #7 | 11,700 | 00342744 |
| 711873Amendment | Mar 15, 2011 | Mar 15, 2011 | Pioneer Natural Res. USA, Inc. | University '6-39' #7 | 11,700 | 00342744 |
| 711597 | Mar 15, 2011 | Mar 15, 2011 | Sandridge Expl. and Prod., LLC | Sun #16 | 4,900 | 00342749 |
| 711596 | Mar 15, 2011 | Mar 15, 2011 | Sandridge Expl. and Prod., LLC | King -B- #14 | 4,900 | 00342748 |
| 711595 | Mar 15, 2011 | Mar 15, 2011 | Sandridge Expl. and Prod., LLC | King -B- #11 | 4,900 | 00342747 |
| 711594 | Mar 15, 2011 | Mar 15, 2011 | Sandridge Expl. and Prod., LLC | King -B- #8 | 4,900 | 00342746 |
| 711593 | Mar 15, 2011 | Mar 15, 2011 | Sandridge Expl. and Prod., LLC | Thornberry '4W' #18 | 4,900 | 00342745 |
| 702027 | Mar 14, 2011 | Mar 14, 2011 | Sandridge Expl. and Prod., LLC | South Fuhrman Mascho Unit #8114 | 4,900 | 00342042 |
| 702027Amendment | Mar 14, 2011 | Mar 14, 2011 | Sandridge Expl. and Prod., LLC | South Fuhrman Mascho Unit #8114 | 4,900 | 00342042 |
| 711822 | Mar 11, 2011 | Mar 11, 2011 | Sandridge Expl. and Prod., LLC | Thornberry, MA Consolidated I #40 | 4,900 | 00342743 |
| 711821 | Mar 11, 2011 | Mar 11, 2011 | OXY USA WTP LP | Drone Bee South #1 | 10,500 | 00342742 |
| 711820 | Mar 11, 2011 | Mar 11, 2011 | Sandridge Expl. and Prod., LLC | Thornberry-NWS #40 | 4,900 | 00342741 |
| 711818 | Mar 11, 2011 | Mar 11, 2011 | Sandridge Expl. and Prod., LLC | Thornberry-NWS #39 | 4,900 | 00342740 |
| 711805 | Mar 11, 2011 | Mar 11, 2011 | Sandridge Expl. and Prod., LLC | University 12A #1 | 7,000 | 00340434 |
| 711738 | Mar 10, 2011 | Mar 10, 2011 | OXY USA Inc. | Mabee 139 #4616 | 12,500 | 00342734 |
| 711736 | Mar 10, 2011 | Mar 10, 2011 | Sandridge Expl. and Prod., LLC | Munger Nix 'a' LZS #49 | 4,950 | 00342737 |
| 711728 | Mar 10, 2011 | Mar 10, 2011 | OXY USA Inc. | Mabee 139 #4714 | 12,500 | 00342733 |
| 711707 | Mar 10, 2011 | Mar 10, 2011 | Reliance Energy, Inc. | Mabee 240C #2603 | 13,000 | 00342735 |
| 711668 | Mar 10, 2011 | Mar 10, 2011 | Quantum Resources Management,llc | Gray, Columbus Etal #1953 | 4,700 | 00342739 |
| 711667 | Mar 10, 2011 | Mar 10, 2011 | Quantum Resources Management,llc | Gray, Columbus Etal #1938 | 4,700 | 00342738 |
| 711601 | Mar 10, 2011 | Mar 10, 2011 | Sandridge Expl. and Prod., LLC | MA Thornberry 'a' LZS #21 | 4,900 | 00342732 |
| 711525 | Mar 10, 2011 | Mar 10, 2011 | Sandridge Expl. and Prod., LLC | Seidel, et Al #18 | 4,900 | 00342728 |
| 711394 | Mar 10, 2011 | Mar 10, 2011 | Sandridge Expl. and Prod., LLC | Thornberry, MA Consolidated I #38 | 4,900 | 00342736 |
| 708277 | Mar 10, 2011 | Mar 10, 2011 | Myco Industries, Inc. | University 5-40 #3 | 13,000 | 00342478 |
| 711552 | Mar 9, 2011 | Mar 9, 2011 | Reliance Energy, Inc. | Mabee 240C #2503 | 13,000 | 00342731 |
| 711527 | Mar 9, 2011 | Mar 9, 2011 | Sandridge Expl. and Prod., LLC | JT Lindley-Lynne #40 | 4,900 | 00342729 |
| 711527Amendment | Mar 9, 2011 | Mar 9, 2011 | Sandridge Expl. and Prod., LLC | Lindley-Remuda #68 | 5,100 | 00342729 |
| 711254 | Mar 9, 2011 | Mar 9, 2011 | Occidental Permian Ltd. | Midland Farms Unit #731 | 9,200 | 00335526 |
| 711010 | Mar 9, 2011 | Mar 9, 2011 | COG Operating LLC | University "B" #3 | 6,999 | 00339235 |
| 711530 | Mar 8, 2011 | Mar 8, 2011 | Pecos Operating Company, LLC | Nix '20' #2 | 4,800 | 00342730 |
| 711512 | Mar 8, 2011 | Mar 8, 2011 | Devon Energy Production Co, L.P. | University 12-36 #2HH | 8,000 | 00342727 |
| 711416 | Mar 8, 2011 | Mar 8, 2011 | Primero Operating, Inc. | Andrews #2 | 7,200 | 00342726 |
| 711416Amendment | Mar 8, 2011 | Mar 8, 2011 | Primero Operating, Inc. | Andrews #2 | 7,200 | 00342726 |
| 710272 | Mar 8, 2011 | Mar 8, 2011 | Chevron Midcontinent, L.P. | Dollarhide Unit #2507S | 9,000 | 00342693 |
| 708988 | Mar 8, 2011 | Mar 8, 2011 | Opal Resources Operating Co.,llc | University 6-24 #5 | 14,000 | 00342581 |
| 708988Amendment | Mar 8, 2011 | Mar 8, 2011 | W&T Offshore, Inc. | University 6-24 #5 | 14,000 | 00342581 |
| 711387 | Mar 7, 2011 | Mar 7, 2011 | Sandridge Expl. and Prod., LLC | Seidel #19 | 4,900 | 00342725 |
| 711383 | Mar 7, 2011 | Mar 7, 2011 | Sandridge Expl. and Prod., LLC | Bassel et Al #25 | 4,900 | 00342724 |
| 711367 | Mar 7, 2011 | Mar 7, 2011 | Williams, Clayton Energy, Inc. | Killian #2 | 11,400 | 00342720 |
| 711366 | Mar 7, 2011 | Mar 7, 2011 | Williams, Clayton Energy, Inc. | Killian #1 | 11,400 | 00342719 |
| 711014 | Mar 7, 2011 | Mar 7, 2011 | Texland Petroleum, L.P. | Hedberg Estate 'F' #5 | 7,400 | 00342722 |
| 711336 | Mar 4, 2011 | Mar 4, 2011 | Sandridge Expl. and Prod., LLC | Thornberry, MA Consolidated I #39 | 4,900 | 00342714 |
| 711239 | Mar 4, 2011 | Mar 4, 2011 | Sandridge Expl. and Prod., LLC | Thornberry, MA Consolidated III #39 | 4,900 | 00342713 |
| 711013 | Mar 4, 2011 | Mar 4, 2011 | Texland Petroleum, L.P. | Hedberg Estate 'D' #2 | 7,400 | 00342721 |
| 711000 | Mar 4, 2011 | Mar 4, 2011 | Texland Petroleum, L.P. | Hedberg Estate 'B' #2 | 7,400 | 00342718 |
| 710998 | Mar 4, 2011 | Mar 4, 2011 | Texland Petroleum, L.P. | Hedberg Estate 'A' #2 | 7,400 | 00342716 |
| 710997 | Mar 4, 2011 | Mar 4, 2011 | Texland Petroleum, L.P. | Allar #7 | 7,400 | 00342715 |
| 710921 | Mar 4, 2011 | Mar 4, 2011 | Sandridge Expl. and Prod., LLC | Thornberry, MA Consolidated I #37 | 4,900 | 00342708 |
| 711174 | Mar 3, 2011 | Mar 3, 2011 | Sandridge Expl. and Prod., LLC | Stuckert #26 | 4,900 | 00342712 |
| 710926 | Mar 3, 2011 | Mar 3, 2011 | Sandridge Expl. and Prod., LLC | University 13-46 #11 | 4,900 | 00342711 |
| 710925 | Mar 3, 2011 | Mar 3, 2011 | Sandridge Expl. and Prod., LLC | University 13-46 #19 | 4,900 | 00342710 |
| 710924 | Mar 3, 2011 | Mar 3, 2011 | Sandridge Expl. and Prod., LLC | Thornberry '4W' #17 | 4,900 | 00342709 |
| 710920 | Mar 3, 2011 | Mar 3, 2011 | Sandridge Expl. and Prod., LLC | Munger Nix #120 | 4,900 | 00342707 |
| 711099 | Mar 2, 2011 | Mar 2, 2011 | Reliance Energy, Inc. | Mabee 240A #2005 | 13,000 | 00342706 |
| 710828 | Mar 2, 2011 | Mar 2, 2011 | Sandridge Expl. and Prod., LLC | Thornberry -F- #22 | 4,900 | 00342705 |
| 710620 | Mar 2, 2011 | Mar 2, 2011 | BTA Oil Producers, LLC | 8802 JV-P Fuhrman #6W | 7,525 | 00336471 |
| 711072 | Mar 1, 2011 | Mar 1, 2011 | Sandridge Expl. and Prod., LLC | MA Thornberry 'a' LZS #19 | 4,900 | 00342704 |
| 711070 | Mar 1, 2011 | Mar 1, 2011 | Sandridge Expl. and Prod., LLC | Thornberry-NWS #38 | 4,900 | 00342703 |
| 711069 | Mar 1, 2011 | Mar 1, 2011 | Sandridge Expl. and Prod., LLC | Thornberry-NWS #37 | 4,900 | 00342702 |
| 710822 | Mar 1, 2011 | Mar 1, 2011 | Sandridge Expl. and Prod., LLC | South Fuhrman Mascho Unit #1658R | 4,900 | 00342695 |
| 710941 | Feb 28, 2011 | Feb 28, 2011 | Sandridge Expl. and Prod., LLC | Dyer #1 | 7,705 | 00335006 |
| 710735 | Feb 28, 2011 | Feb 28, 2011 | Pioneer Natural Res. USA, Inc. | University '6-39' #6D | 6,400 | 00342700 |
| 710896 | Feb 25, 2011 | Feb 25, 2011 | Conocophillips Company | University UB #1 | 7,500 | 00342699 |
| 710595 | Feb 25, 2011 | Feb 25, 2011 | Sandridge Expl. and Prod., LLC | Sun #11 | 4,900 | 00342697 |
| 710594 | Feb 25, 2011 | Feb 25, 2011 | Sandridge Expl. and Prod., LLC | Munger Nix -B- #6 | 4,900 | 00342698 |
| 710593 | Feb 25, 2011 | Feb 25, 2011 | Sandridge Expl. and Prod., LLC | Sun #6 | 4,900 | 00342696 |
| 710391 | Feb 24, 2011 | Feb 24, 2011 | Sandridge Expl. and Prod., LLC | University D #3 | 4,900 | 00342692 |
| 710687 | Feb 23, 2011 | Feb 23, 2011 | Sandridge Expl. and Prod., LLC | Phillips University 15-11 #11 | 8,100 | 00342694 |
| 710592 | Feb 23, 2011 | Feb 23, 2011 | Sandridge Expl. and Prod., LLC | Seidel #17 | 4,900 | 00342691 |
| 710591 | Feb 23, 2011 | Feb 23, 2011 | Sandridge Expl. and Prod., LLC | Thornberry -F- #21 | 4,900 | 00342689 |
| 710590 | Feb 23, 2011 | Feb 23, 2011 | Sandridge Expl. and Prod., LLC | CC Lockhart & Brown #9 | 4,900 | 00342690 |
| 709022 | Feb 23, 2011 | Feb 23, 2011 | Williams, Clayton Energy, Inc. | Andrews University 21 #11 | 11,500 | 00342554 |
| 710635 | Feb 22, 2011 | Feb 22, 2011 | Huntington Energy, L.L.C. | Parker Ranchland 25 #1 | 9,533 | 00341897 |
| 710635Amendment | Feb 22, 2011 | Feb 22, 2011 | Huntington Energy, L.L.C. | Parker Ranchland 25 #1 | 9,533 | 00341897 |
| 710525 | Feb 22, 2011 | Feb 22, 2011 | Sandridge Expl. and Prod., LLC | Phillips University 15-11 #10 | 8,100 | 00342688 |
| 710423 | Feb 22, 2011 | Feb 22, 2011 | BTA Oil Producers, LLC | 8411 JV-P Block -5- #3 | 11,600 | 00342681 |
| 710146 | Feb 22, 2011 | Feb 22, 2011 | Sandridge Expl. and Prod., LLC | Thornberry, MA Consolidated III #40 | 4,900 | 00342687 |
| 710102 | Feb 22, 2011 | Feb 22, 2011 | Pioneer Natural Res. USA, Inc. | University '7-9' #4 | 11,730 | 00342686 |
| 710100 | Feb 22, 2011 | Feb 22, 2011 | Pioneer Natural Res. USA, Inc. | University '7-9' #1 | 11,680 | 00342685 |
| 710093 | Feb 22, 2011 | Feb 22, 2011 | Myco Industries, Inc. | University 5-40 #5 | 13,000 | 00342684 |
| 710019 | Feb 21, 2011 | Feb 21, 2011 | Fasken Oil and Ranch, Ltd. | Fee 'BM' #1638 | 11,400 | 00342657 |
| 709974 | Feb 21, 2011 | Feb 21, 2011 | Sandridge Expl. and Prod., LLC | Anita #18 | 4,900 | 00342675 |
| 709970 | Feb 21, 2011 | Feb 21, 2011 | Sandridge Expl. and Prod., LLC | JT Lindley-Lynne #23 | 4,900 | 00342674 |
| 709957 | Feb 21, 2011 | Feb 21, 2011 | Sandridge Expl. and Prod., LLC | Munger Nix #125 | 4,900 | 00342673 |
| 710495 | Feb 18, 2011 | Feb 18, 2011 | Windsor Permian LLC | Big Max 25 NE #8 | 11,200 | 00342682 |
| 710495Amendment | Feb 18, 2011 | Feb 18, 2011 | Windsor Permian LLC | Big Max 25 NE #8 | 11,200 | 00342682 |
| 710485 | Feb 18, 2011 | Feb 18, 2011 | Windsor Permian LLC | Big Max 24 SW #13 | 11,200 | 00342683 |
| 710485Amendment | Feb 18, 2011 | Feb 18, 2011 | Windsor Permian LLC | Big Max 24 SW #13 | 11,200 | 00342683 |
| 710476 | Feb 18, 2011 | Feb 18, 2011 | Windsor Permian LLC | Big Max 24 SE #10 | 11,200 | 00342671 |
| 710465 | Feb 18, 2011 | Feb 18, 2011 | Windsor Permian LLC | Big Max 25 NW #6 | 11,200 | 00342672 |
| 710456 | Feb 18, 2011 | Feb 18, 2011 | Pioneer Natural Res. USA, Inc. | University '7-8' #2 | 11,800 | 00342680 |
| 709904 | Feb 17, 2011 | Feb 17, 2011 | XTO Energy Inc. | University Block 9 #8AH | 10,700 | 00341651 |