| 724238 | Sep 16, 2011 | Sep 16, 2011 | Sandridge Expl. and Prod., LLC | University 12-25 #1 | 7,900 | 00343416 |
| 724214 | Sep 16, 2011 | Sep 16, 2011 | Sandridge Expl. and Prod., LLC | Riggan #5 | 4,900 | 00343415 |
| 724178 | Sep 16, 2011 | Sep 16, 2011 | OXY USA Inc. | Universitylizby #2 | 12,200 | 00343414 |
| 724168 | Sep 16, 2011 | Sep 16, 2011 | Sandridge Expl. and Prod., LLC | Munger & Nix Snow #31 | 4,900 | 00343413 |
| 724043 | Sep 16, 2011 | Sep 16, 2011 | PDC Energy | Sarah S #1663 | 11,900 | 00335001 |
| 724043Amendment | Sep 16, 2011 | Sep 16, 2011 | COG Operating LLC | Sarah S #1663 | 11,900 | 00335001 |
| 717630 | Sep 16, 2011 | Sep 16, 2011 | Three Rivers Operating Co LLC | L. T. Davis #399 | 4,650 | 00343417 |
| 717630Amendment | Sep 16, 2011 | Sep 16, 2011 | Three Rivers Operating Co LLC | L. T. Davis #399 | 4,650 | 00343417 |
| 717630Amendment | Sep 16, 2011 | Sep 16, 2011 | Three Rivers Operating Co LLC | L. T. Davis #399 | 6,000 | 00343417 |
| 724158 | Sep 15, 2011 | Sep 15, 2011 | OXY USA Inc. | Universitycarol #2 | 12,200 | 00343412 |
| 724113 | Sep 15, 2011 | Sep 15, 2011 | Americo Energy Resources, LLC | State BN #4 | 13,000 | 00301663 |
| 724110 | Sep 15, 2011 | Sep 15, 2011 | Americo Energy Resources, LLC | State BM #2 | 13,000 | 00301760 |
| 724104 | Sep 15, 2011 | Sep 15, 2011 | Sandridge Expl. and Prod., LLC | Olsen et Al #17 | 4,900 | 00343409 |
| 722317 | Sep 15, 2011 | Sep 15, 2011 | XOG Operating LLC | University Andrews 8 #4 | 14,400 | 00343289 |
| 724144 | Sep 14, 2011 | Sep 14, 2011 | Pioneer Natural Res. USA, Inc. | University '7-35' #3 | 12,000 | 00343411 |
| 724143 | Sep 14, 2011 | Sep 14, 2011 | Pioneer Natural Res. USA, Inc. | University '6-39' #9 | 11,800 | 00343410 |
| 724091 | Sep 14, 2011 | Sep 14, 2011 | Myco Industries, Inc. | University 6-40 #2 | 13,000 | 00343408 |
| 724079 | Sep 14, 2011 | Sep 14, 2011 | Chesapeake Operating, Inc. | University 8-9 #3 | 18,000 | 00343407 |
| 724079Amendment | Sep 14, 2011 | Sep 14, 2011 | Chesapeake Operating, Inc. | University 8-9 #3 | 18,000 | 00343407 |
| 724053 | Sep 14, 2011 | Sep 14, 2011 | Sandridge Expl. and Prod., LLC | Fly #10 | 4,900 | 00343406 |
| 724039 | Sep 14, 2011 | Sep 14, 2011 | Windsor Permian LLC | UL II1 #11 | 12,000 | 00343405 |
| 724036 | Sep 14, 2011 | Sep 14, 2011 | Windsor Permian LLC | UL III 20 #11 | 12,000 | 00343404 |
| 722428 | Sep 14, 2011 | Sep 14, 2011 | W&T Offshore, Inc. | University 6-34 #4 | 12,900 | 00343304 |
| 722318 | Sep 14, 2011 | Sep 14, 2011 | XOG Operating LLC | University Andrews 8 #6 | 14,400 | 00343290 |
| 722315 | Sep 14, 2011 | Sep 14, 2011 | XOG Operating LLC | University Andrews 8 #2 | 14,400 | 00343288 |
| 723943 | Sep 13, 2011 | Sep 13, 2011 | Sandridge Expl. and Prod., LLC | Glasscock A #19 | 4,900 | 00343402 |
| 723935 | Sep 13, 2011 | Sep 13, 2011 | Sandridge Expl. and Prod., LLC | Suggett #6 | 4,900 | 00343401 |
| 723934 | Sep 13, 2011 | Sep 13, 2011 | Sandridge Expl. and Prod., LLC | Gindorf #6 | 4,900 | 00343400 |
| 723933 | Sep 13, 2011 | Sep 13, 2011 | Sandridge Expl. and Prod., LLC | Ranch 4 #15 | 4,900 | 00343399 |
| 723926 | Sep 13, 2011 | Sep 13, 2011 | Sandridge Expl. and Prod., LLC | CC Lockhart & Brown AA #15 | 4,900 | 00343398 |
| 723925 | Sep 13, 2011 | Sep 13, 2011 | Sandridge Expl. and Prod., LLC | Nix F #14 | 4,900 | 00343397 |
| 723306 | Sep 13, 2011 | Sep 13, 2011 | Americo Energy Resources, LLC | Emma Ellen Cons. #A 3P | 13,000 | 00310485 |
| 721000 | Sep 13, 2011 | Sep 13, 2011 | Texland Petroleum, L.P. | Twilight #5 | 4,800 | 00343198 |
| 723846 | Sep 9, 2011 | Sep 9, 2011 | Sandridge Expl. and Prod., LLC | University a 4318 #9 | 4,950 | 00343395 |
| 723843 | Sep 9, 2011 | Sep 9, 2011 | Sandridge Expl. and Prod., LLC | Wind River #1 | 4,900 | 00343396 |
| 723842 | Sep 9, 2011 | Sep 9, 2011 | Sandridge Expl. and Prod., LLC | Munger Nix A #40 | 4,900 | 00343394 |
| 723840 | Sep 9, 2011 | Sep 9, 2011 | Sandridge Expl. and Prod., LLC | Munger Nix C LZS #5 | 4,900 | 00343392 |
| 723803 | Sep 9, 2011 | Sep 9, 2011 | Devon Energy Production Co, L.P. | Uls AD 4-15 #1 | 11,500 | 00343391 |
| 723732 | Sep 9, 2011 | Sep 9, 2011 | Sandridge Expl. and Prod., LLC | Olsen et Al #13 | 4,900 | 00343390 |
| 723731 | Sep 9, 2011 | Sep 9, 2011 | Sandridge Expl. and Prod., LLC | Nix, EC #6 | 4,900 | 00343388 |
| 723640 | Sep 9, 2011 | Sep 9, 2011 | Chevron U. S. A. Inc. | Mabee, J. E. 'B' NCT-3 #4401 | 11,700 | 00343393 |
| 723573 | Sep 9, 2011 | Sep 9, 2011 | Chevron U. S. A. Inc. | Mabee, J. E. 'B' NCT-4 #2101 | 11,700 | 00343389 |
| 723592 | Sep 8, 2011 | Sep 8, 2011 | Devon Energy Production Co, L.P. | Uls 4-10 #3 | 11,500 | 00343382 |
| 723545 | Sep 8, 2011 | Sep 8, 2011 | Sandridge Expl. and Prod., LLC | Parker et Al #21 | 4,950 | 00343385 |
| 723566 | Sep 7, 2011 | Sep 7, 2011 | Windsor Permian LLC | UL 3 #11 | 10,288 | 00341770 |
| 723547 | Sep 7, 2011 | Sep 7, 2011 | Sandridge Expl. and Prod., LLC | Munger Nix B #17 | 4,900 | 00343379 |
| 720172 | Sep 7, 2011 | Sep 7, 2011 | XOG Operating LLC | University Andrews 42 #4 | 14,400 | 00343164 |
| 720165 | Sep 7, 2011 | Sep 7, 2011 | XOG Operating LLC | University Andrews 42 #3 | 12,500 | 00343163 |
| 723518 | Sep 6, 2011 | Sep 6, 2011 | Sandridge Expl. and Prod., LLC | Parker D #7 | 4,900 | 00343378 |
| 723508 | Sep 6, 2011 | Sep 6, 2011 | Sandridge Expl. and Prod., LLC | University Consolidated V #2008 | 8,500 | 00343377 |
| 723508Amendment | Sep 6, 2011 | Sep 6, 2011 | Sandridge Expl. and Prod., LLC | University Consolidated V #2008 | 8,500 | 00343377 |
| 723478 | Sep 6, 2011 | Sep 6, 2011 | SM Energy Company | University 7 "Berkley #5 | 10,500 | 00343381 |
| 723478Amendment | Sep 6, 2011 | Sep 6, 2011 | SM Energy Company | University 7 'Berkley #5 | 10,500 | 00343381 |
| 723474 | Sep 6, 2011 | Sep 6, 2011 | Reliance Energy, Inc. | Mabee 240C #123 | 13,000 | 00343376 |
| 723350 | Sep 6, 2011 | Sep 6, 2011 | Sandridge Expl. and Prod., LLC | Parker et Al #16 | 4,950 | 00343366 |
| 723466 | Sep 2, 2011 | Sep 2, 2011 | Sandridge Expl. and Prod., LLC | University 13-29 #1 | 7,300 | 00343375 |
| 723466Amendment | Sep 2, 2011 | Sep 2, 2011 | Sandridge Expl. and Prod., LLC | University 11 #11 | 9,000 | 00343375 |
| 723454 | Sep 2, 2011 | Sep 2, 2011 | Reliance Energy, Inc. | Mabee 240B #203 | 13,000 | 00343373 |
| 723432 | Sep 2, 2011 | Sep 2, 2011 | Reliance Energy, Inc. | Mabee 240A #4204 | 13,000 | 00343372 |
| 723425 | Sep 2, 2011 | Sep 2, 2011 | Reliance Energy, Inc. | Mabee 240A #4103 | 13,000 | 00343371 |
| 723347 | Sep 2, 2011 | Sep 2, 2011 | Sandridge Expl. and Prod., LLC | Parker et Al #10 | 4,950 | 00343369 |
| 723329 | Sep 2, 2011 | Sep 2, 2011 | Sandridge Expl. and Prod., LLC | University A #20 | 8,000 | 00343363 |
| 723252 | Sep 2, 2011 | Sep 2, 2011 | Sandridge Expl. and Prod., LLC | Parker, et Al #13 | 4,950 | 00343361 |
| 721721 | Sep 2, 2011 | Sep 2, 2011 | Chesapeake Operating, Inc. | University 7-33 #3 | 12,000 | 00343258 |
| 723400 | Sep 1, 2011 | Sep 1, 2011 | Clearfork Operating LLC | Big Max 5 #2 | 12,500 | 00343367 |
| 723400Amendment | Sep 1, 2011 | Sep 1, 2011 | Clearfork Operating LLC | Big Max 5 #2 | 12,500 | 00343367 |
| 723349 | Sep 1, 2011 | Sep 1, 2011 | Sandridge Expl. and Prod., LLC | Parker et Al #19 | 4,950 | 00343368 |
| 723333 | Sep 1, 2011 | Sep 1, 2011 | Sandridge Expl. and Prod., LLC | University E #5 | 8,000 | 00343365 |
| 723333Amendment | Sep 1, 2011 | Sep 1, 2011 | Sandridge Expl. and Prod., LLC | University E #5 | 8,000 | 00343365 |
| 723330 | Sep 1, 2011 | Sep 1, 2011 | Sandridge Expl. and Prod., LLC | University D #7 | 8,000 | 00343364 |
| 723330Amendment | Sep 1, 2011 | Sep 1, 2011 | Sandridge Expl. and Prod., LLC | University D #7 | 8,000 | 00343364 |
| 723320 | Sep 1, 2011 | Sep 1, 2011 | Americo Energy Resources, LLC | Emma Ellen Cons. #O 3O | 13,000 | 00301646 |
| 723197 | Sep 1, 2011 | Sep 1, 2011 | Sandridge Expl. and Prod., LLC | State Barrow #3 | 7,800 | 00343354 |
| 723011 | Sep 1, 2011 | Sep 1, 2011 | Chevron U. S. A. Inc. | Mabee Unit #279 | 12,960 | 00330205 |
| 722926 | Sep 1, 2011 | Sep 1, 2011 | Chesapeake Operating, Inc. | University 5-26 #3 | 12,000 | 00343342 |
| 722926Amendment | Sep 1, 2011 | Sep 1, 2011 | Enervest Operating, L.L.C. | University 5-26 #3 | 14,000 | 00343342 |
| 723253 | Aug 31, 2011 | Aug 31, 2011 | Sandridge Expl. and Prod., LLC | Parker C #16 | 4,900 | 00343359 |
| 723238 | Aug 31, 2011 | Aug 31, 2011 | W&T Offshore, Inc. | University 6-33 #5 | 12,900 | 00343358 |
| 723201 | Aug 31, 2011 | Aug 31, 2011 | Sandridge Expl. and Prod., LLC | State Barrow #4 | 7,800 | 00343355 |
| 723098 | Aug 31, 2011 | Aug 31, 2011 | Sandridge Expl. and Prod., LLC | Fly #12 | 4,900 | 00343347 |
| 722911 | Aug 31, 2011 | Aug 31, 2011 | PDC Energy | Sarah S #1674 | 11,900 | 00343356 |
| 722911Amendment | Aug 31, 2011 | Aug 31, 2011 | PDC Energy | Sarah S #1674 | 11,000 | 00343356 |
| 722911Amendment | Aug 31, 2011 | Aug 31, 2011 | COG Operating LLC | Sarah S #1674 | 11,000 | 00343356 |
| 722904 | Aug 31, 2011 | Aug 31, 2011 | PDC Energy | University Ruth #471 | 11,900 | 00343344 |
| 722380 | Aug 31, 2011 | Aug 31, 2011 | Bulldog Operating Company | Sage #1 | 8,000 | 00343362 |
| 722380Amendment | Aug 31, 2011 | Aug 31, 2011 | Bulldog Operating Company | Sage #1 | 10,800 | 00343362 |
| 722377 | Aug 31, 2011 | Aug 31, 2011 | Bulldog Operating Company | Loomis #1 | 8,000 | 00343305 |
| 722377Amendment | Aug 31, 2011 | Aug 31, 2011 | Bulldog Operating Company | Loomis #1 | 11,300 | 00343305 |
| 721551 | Aug 31, 2011 | Aug 31, 2011 | Americo Energy Resources, LLC | State BM #3 | 13,000 | 00301761 |
| 723169 | Aug 30, 2011 | Aug 30, 2011 | Ped Oil Corporation | Ped Wichita #7 | 7,800 | 00343352 |
| 723159 | Aug 30, 2011 | Aug 30, 2011 | Sandridge Expl. and Prod., LLC | Thornberry -F- #36 | 5,000 | 00343351 |
| 723157 | Aug 30, 2011 | Aug 30, 2011 | Sandridge Expl. and Prod., LLC | MA Thornberry 'a' LZS #31 | 4,900 | 00343350 |
| 723116 | Aug 30, 2011 | Aug 30, 2011 | Americo Energy Resources, LLC | Emma Ellen Cons. #N 6N | 13,000 | 00310845 |
| 723105 | Aug 30, 2011 | Aug 30, 2011 | Sandridge Expl. and Prod., LLC | University 17W #7 | 4,900 | 00343349 |
| 723104 | Aug 29, 2011 | Aug 29, 2011 | Sandridge Expl. and Prod., LLC | Thornberry D #7 | 4,900 | 00343348 |
| 723076 | Aug 29, 2011 | Aug 29, 2011 | Americo Energy Resources, LLC | Emma Ellen Cons. #A 2P | 13,000 | 00301735 |
| 721033 | Aug 29, 2011 | Aug 29, 2011 | Williams, Clayton Energy, Inc. | Andrews University 33 #16 | 11,600 | 00343221 |
| 721030 | Aug 29, 2011 | Aug 29, 2011 | Williams, Clayton Energy, Inc. | Andrews University 33 #15 | 11,600 | 00343216 |
| 717638 | Aug 29, 2011 | Aug 29, 2011 | Three Rivers Operating Co LLC | E. F. King #398 | 4,650 | 00343357 |
| 717638Amendment | Aug 29, 2011 | Aug 29, 2011 | Three Rivers Operating Co LLC | E. F. King #398 | 4,650 | 00343357 |