| 734313 | Mar 5, 2012 | Mar 5, 2012 | Athlon FE Operating LLC | Clark 1 #7 | 11,500 | 17334825 |
| 732463 | Mar 5, 2012 | Mar 5, 2012 | Berry Oil Comp. | Blalock A #4802 | 11,500 | 17333892 |
| 734296 | Mar 2, 2012 | Mar 2, 2012 | Athlon FE Operating LLC | Cookbooks #2402 | 11,000 | 17334824 |
| 734463 | Mar 1, 2012 | Mar 1, 2012 | McClure Oil Company, Inc. | TXL '3' #2 | 9,600 | 17334826 |
| 734100 | Feb 28, 2012 | Feb 28, 2012 | Energen Resources Corporation | Jones -46- #3 | 11,000 | 17334822 |
| 734088 | Feb 28, 2012 | Feb 28, 2012 | Energen Resources Corporation | Craig #3 | 11,000 | 17334821 |
| 734018 | Feb 28, 2012 | Feb 28, 2012 | Endeavor Energy Resources L.P. | Daniel - Huling Unit #3 | 12,000 | 17334819 |
| 734015 | Feb 28, 2012 | Feb 28, 2012 | Laredo Petroleum, Inc. | Cox-Bundy 16 #3HH | 11,000 | 17334820 |
| 734015Amendment | Feb 28, 2012 | Feb 28, 2012 | Laredo Petroleum, Inc. | Cox-Bundy 16 #3HH | 11,000 | 17334820 |
| 734004 | Feb 28, 2012 | Feb 28, 2012 | Bluestem Energy Holdings, LLC | Calverly #8 | 11,000 | 17334817 |
| 734004Amendment | Feb 28, 2012 | Feb 28, 2012 | Bluestem Energy Holdings, LLC | Calverly #8 | 11,500 | 17334817 |
| 733992 | Feb 28, 2012 | Feb 28, 2012 | Bluestem Energy Holdings, LLC | Weaver #8 | 11,000 | 17334815 |
| 733992Amendment | Feb 28, 2012 | Feb 28, 2012 | Bluestem Energy Holdings, LLC | Weaver #8 | 15,000 | 17334815 |
| 733991 | Feb 28, 2012 | Feb 28, 2012 | Bluestem Energy Holdings, LLC | Weaver #7 | 11,000 | 17334814 |
| 733990 | Feb 28, 2012 | Feb 28, 2012 | Bluestem Energy Holdings, LLC | Weaver #6 | 11,000 | 17336533 |
| 733989 | Feb 28, 2012 | Feb 28, 2012 | Bluestem Energy Holdings, LLC | Weaver #4 | 11,000 | 17336756 |
| 733989Amendment | Feb 28, 2012 | Feb 28, 2012 | Bluestem Energy Holdings, LLC | Weaver #4 | 15,000 | 17336756 |
| 733988 | Feb 28, 2012 | Feb 28, 2012 | Bluestem Energy Holdings, LLC | Weaver #3 | 11,000 | 17334811 |
| 733986 | Feb 28, 2012 | Feb 28, 2012 | Bluestem Energy Holdings, LLC | Ratliff 'B' #2 | 11,000 | 17334818 |
| 733986Amendment | Feb 28, 2012 | Feb 28, 2012 | Bluestem Energy Holdings, LLC | Ratliff 'B' #2 | 11,500 | 17334818 |
| 733968 | Feb 28, 2012 | Feb 28, 2012 | Apache Corporation | Ballenger #3005 | 10,800 | 17334810 |
| 733503 | Feb 28, 2012 | Feb 28, 2012 | Apache Corporation | Hartley 38 #11 | 10,900 | 17334802 |
| 733964 | Feb 27, 2012 | Feb 27, 2012 | Berry Oil Comp. | Zant 47 SWD #1 | 10,500 | 17331781 |
| 733882 | Feb 27, 2012 | Feb 27, 2012 | Laredo Petroleum, Inc. | Neumann 2A #1 | 11,000 | 17334808 |
| 733822 | Feb 27, 2012 | Feb 27, 2012 | Apache Corporation | Palometa 44 #1 | 10,340 | 17333863 |
| 733507 | Feb 27, 2012 | Feb 27, 2012 | Apache Corporation | His Blessing 35 #10 | 11,000 | 17334807 |
| 733507Amendment | Feb 27, 2012 | Feb 27, 2012 | Apache Corporation | His Blessing 35 #10 | 11,000 | 17334807 |
| 731888 | Feb 27, 2012 | Feb 27, 2012 | Apache Corporation | Nix 16 #10 | 11,000 | 17334733 |
| 734093 | Feb 24, 2012 | Feb 24, 2012 | Energen Resources Corporation | Frost #3 | 11,000 | 17334809 |
| 733869 | Feb 24, 2012 | Feb 24, 2012 | Laredo Petroleum, Inc. | Lacy Creek 34 #3HH | 11,000 | 17334806 |
| 733827 | Feb 24, 2012 | Feb 24, 2012 | Laredo Petroleum, Inc. | Reynolds 1A #1 | 11,000 | 17334804 |
| 733827Amendment | Feb 24, 2012 | Feb 24, 2012 | Vital Energy, Inc. | Reynolds 1A #1 | 11,000 | 17334804 |
| 730950 | Feb 24, 2012 | Feb 24, 2012 | Pioneer Natural Res. USA, Inc. | Winslow 'A' #2 | 11,300 | 17334707 |
| 734001 | Feb 23, 2012 | Feb 23, 2012 | Bluestem Energy Holdings, LLC | Calverly #6 | 11,000 | 17334801 |
| 734001Amendment | Feb 23, 2012 | Feb 23, 2012 | Bluestem Energy Holdings, LLC | Calverly #6 | 11,500 | 17334801 |
| 734001Amendment | Feb 23, 2012 | Feb 23, 2012 | Bluestem Energy Holdings, LLC | Calverly #6 | 11,500 | 17334801 |
| 733999 | Feb 23, 2012 | Feb 23, 2012 | Bluestem Energy Holdings, LLC | Calverly #5 | 11,000 | 17334800 |
| 733999Amendment | Feb 23, 2012 | Feb 23, 2012 | Bluestem Energy Holdings, LLC | Calverly #5 | 11,500 | 17334800 |
| 733999Amendment | Feb 23, 2012 | Feb 23, 2012 | Diamondback E&P LLC | Calverly #5 | 11,500 | 17334800 |
| 733998 | Feb 23, 2012 | Feb 23, 2012 | Bluestem Energy Holdings, LLC | Calverly #4 | 11,000 | 17334799 |
| 733998Amendment | Feb 23, 2012 | Feb 23, 2012 | Bluestem Energy Holdings, LLC | Calverly #4 | 11,500 | 17334799 |
| 733998Amendment | Feb 23, 2012 | Feb 23, 2012 | Bluestem Energy Holdings, LLC | Calverly #4 | 15,000 | 17334799 |
| 733997 | Feb 23, 2012 | Feb 23, 2012 | Bluestem Energy Holdings, LLC | Calverly #3 | 11,000 | 17334798 |
| 733997Amendment | Feb 23, 2012 | Feb 23, 2012 | Bluestem Energy Holdings, LLC | Calverly #3 | 11,500 | 17334798 |
| 733996 | Feb 23, 2012 | Feb 23, 2012 | Bluestem Energy Holdings, LLC | Calverly #2 | 11,000 | 17334797 |
| 733996Amendment | Feb 23, 2012 | Feb 23, 2012 | Bluestem Energy Holdings, LLC | Calverly #2 | 11,500 | 17334797 |
| 733707 | Feb 23, 2012 | Feb 23, 2012 | Laredo Petroleum - Dallas, Inc. | Fuchs-A- #47L | 11,000 | 17334803 |
| 733378 | Feb 23, 2012 | Feb 23, 2012 | Energen Resources Corporation | Colorado #7 | 11,000 | 17334805 |
| 733012 | Feb 22, 2012 | Feb 22, 2012 | Pioneer Natural Res. USA, Inc. | TXL 'DC' #3 | 11,500 | 17334765 |
| 733012Amendment | Feb 22, 2012 | Feb 22, 2012 | Pioneer Natural Res. USA, Inc. | TXL 'DC' #3 | 11,800 | 17334765 |
| 733000 | Feb 22, 2012 | Feb 22, 2012 | Crownquest Operating, LLC | Herzog 23 #1 | 11,900 | 17334795 |
| 733550 | Feb 21, 2012 | Feb 21, 2012 | Athlon FE Operating LLC | Ed Books 25 #4 | 11,000 | 17334794 |
| 733506 | Feb 21, 2012 | Feb 21, 2012 | Apache Corporation | Rosebud 16 #3 | 11,000 | 17334793 |
| 733473 | Feb 18, 2012 | Feb 18, 2012 | Energen Resources Corporation | Trinity -16- #6 | 11,000 | 17334791 |
| 733471 | Feb 18, 2012 | Feb 18, 2012 | Energen Resources Corporation | San Saba -A- #4 | 11,000 | 17334790 |
| 733471Amendment | Feb 18, 2012 | Feb 18, 2012 | Energen Resources Corporation | San Saba -A- #4 | 11,000 | 17334790 |
| 733467 | Feb 18, 2012 | Feb 18, 2012 | Energen Resources Corporation | San Saba #4 | 11,000 | 17334788 |
| 733424 | Feb 18, 2012 | Feb 18, 2012 | Energen Resources Corporation | Neal #7 | 11,000 | 17334784 |
| 733423 | Feb 18, 2012 | Feb 18, 2012 | Energen Resources Corporation | Neal #6 | 11,000 | 17334787 |
| 733421 | Feb 18, 2012 | Feb 18, 2012 | Energen Resources Corporation | Llano -8- #3 | 11,000 | 17334783 |
| 733419 | Feb 18, 2012 | Feb 18, 2012 | Energen Resources Corporation | Guadalupe -48- #7 | 11,000 | 17334782 |
| 733694 | Feb 17, 2012 | Feb 17, 2012 | Laredo Petroleum, Inc. | Currie Ranch 14 #5 | 11,000 | 17334792 |
| 733405 | Feb 17, 2012 | Feb 17, 2012 | Energen Resources Corporation | Frio #3 | 11,000 | 17334781 |
| 733386 | Feb 17, 2012 | Feb 17, 2012 | Energen Resources Corporation | Colorado #8 | 11,000 | 17334780 |
| 733380 | Feb 17, 2012 | Feb 17, 2012 | Apache Corporation | Copeland 27 #1WS | 2,500 | 17334779 |
| 733374 | Feb 17, 2012 | Feb 17, 2012 | Energen Resources Corporation | Brazos #4 | 11,000 | 17334778 |
| 733368 | Feb 17, 2012 | Feb 17, 2012 | Energen Resources Corporation | Blanco -29A- #2 | 11,000 | 17334777 |
| 733365 | Feb 17, 2012 | Feb 17, 2012 | Energen Resources Corporation | Blanco -29- #2 | 11,000 | 17334776 |
| 733342 | Feb 17, 2012 | Feb 17, 2012 | Apache Corporation | Bell 22 #5 | 11,000 | 17334775 |
| 733336 | Feb 17, 2012 | Feb 17, 2012 | Fiml Natural Resources, LLC | Terry #3C | 10,500 | 17334774 |
| 733336Amendment | Feb 17, 2012 | Feb 17, 2012 | Fiml Natural Resources, LLC | Terry #3C | 10,500 | 17334774 |
| 733334 | Feb 17, 2012 | Feb 17, 2012 | Apache Corporation | Copeland 27 #4 | 11,000 | 17334773 |
| 733324 | Feb 17, 2012 | Feb 17, 2012 | Nadel and Gussman Permian,l.l.c. | Bearkat 17 #4 | 10,500 | 17334772 |
| 733297 | Feb 16, 2012 | Feb 16, 2012 | Nadel and Gussman Permian,l.l.c. | Eagle 4 #1 | 10,500 | 17334771 |
| 733274 | Feb 16, 2012 | Feb 16, 2012 | Nadel and Gussman Permian,l.l.c. | Charger 16 #1 | 10,500 | 17334770 |
| 733235 | Feb 16, 2012 | Feb 16, 2012 | Athlon FE Operating LLC | Jost 25 #2 | 11,000 | 17334769 |
| 733229 | Feb 16, 2012 | Feb 16, 2012 | COG Operating LLC | Currie 'a' North #4009 | 10,500 | 17334768 |
| 733195 | Feb 16, 2012 | Feb 16, 2012 | Laredo Petroleum, Inc. | Birdie Mae 12 #5 | 11,000 | 17334767 |
| 733055 | Feb 14, 2012 | Feb 14, 2012 | Laredo Petroleum - Dallas, Inc. | Lane Trust-B- #42H | 10,500 | 17334766 |
| 733073 | Feb 13, 2012 | Feb 13, 2012 | Bluestem Energy Holdings, LLC | Brunson #5 | 11,000 | 17334762 |
| 732929 | Feb 10, 2012 | Feb 10, 2012 | Burleson Petroleum, Inc. | Page Fowler 12 #1 | 11,500 | 17334764 |
| 732929Amendment | Feb 10, 2012 | Feb 10, 2012 | Burleson Petroleum, Inc. | Page Fowler 12 #1 | 11,500 | 17334764 |
| 732893 | Feb 10, 2012 | Feb 10, 2012 | Laredo Petroleum, Inc. | Currie Ranch 21 #3 | 11,000 | 17334755 |
| 732893Amendment | Feb 10, 2012 | Feb 10, 2012 | Laredo Petroleum, Inc. | Currie Ranch 21 #3 | 11,000 | 17334755 |
| 733074 | Feb 9, 2012 | Feb 9, 2012 | Bluestem Energy Holdings, LLC | Brunson #6 | 11,000 | 17334763 |
| 733069 | Feb 9, 2012 | Feb 9, 2012 | Bluestem Energy Holdings, LLC | Brunson #4 | 11,000 | 17334761 |
| 732451 | Feb 8, 2012 | Feb 8, 2012 | Crownquest Operating, LLC | Perry Brooks 2 #3 | 11,600 | 17334754 |
| 732101 | Feb 8, 2012 | Feb 8, 2012 | Apache Corporation | E D B 10 #3 | 10,721 | 17333548 |
| 732544 | Feb 6, 2012 | Feb 6, 2012 | McClure Oil Company, Inc. | Driver 33 #6 | 5,400 | 17334758 |
| 732541 | Feb 6, 2012 | Feb 6, 2012 | McClure Oil Company, Inc. | Driver '33' #5 | 5,400 | 17334757 |
| 732541Amendment | Feb 6, 2012 | Feb 6, 2012 | McClure Oil Company, Inc. | Driver '33' #5 | 5,400 | 17334757 |
| 732342 | Feb 6, 2012 | Feb 6, 2012 | Laredo Petroleum, Inc. | Bearkat #805 | 11,000 | 17334756 |
| 732390 | Feb 3, 2012 | Feb 3, 2012 | Athlon FE Operating LLC | Ed Books 13 #5 | 11,000 | 17334759 |
| 732390Amendment | Feb 3, 2012 | Feb 3, 2012 | Athlon FE Operating LLC | Ed Books 13 #5 | 11,000 | 17334759 |
| 732821 | Feb 2, 2012 | Feb 2, 2012 | Laredo Petroleum, Inc. | Bednar 189 #1 | 11,000 | 17334753 |
| 732480 | Feb 2, 2012 | Feb 2, 2012 | Pioneer Natural Res. USA, Inc. | Weyman '22B' #3 | 10,700 | 17334751 |
| 732480Amendment | Feb 2, 2012 | Feb 2, 2012 | Pioneer Natural Res. USA, Inc. | Weyman '22B' #3 | 11,200 | 17334751 |
| 732455 | Feb 2, 2012 | Feb 2, 2012 | Laredo Petroleum, Inc. | Lacy Creek 18A #1 | 11,000 | 17334750 |
| 732452 | Feb 2, 2012 | Feb 2, 2012 | Laredo Petroleum, Inc. | Lacy Creek 24 #2 | 11,000 | 17334748 |
| 732452Amendment | Feb 2, 2012 | Feb 2, 2012 | Laredo Petroleum, Inc. | Lacy Creek 24 #2 | 11,000 | 17334748 |