| 716881Amendment | Jun 2, 2011 | Jun 2, 2011 | Chesapeake Operating, Inc. | Pge Dos #H 1HH | 12,000 | 47941312 |
| 717389 | May 31, 2011 | May 31, 2011 | Escondido Resources II, LLC | Herradura #1HH | 13,000 | 47941323 |
| 717238 | May 26, 2011 | May 26, 2011 | Anadarko E&P Company LP | Briscoe Chupadera Ranch #2HH | 11,750 | 47941322 |
| 717078 | May 25, 2011 | May 25, 2011 | XTO Energy Inc. | Las Raices Ranch #16HH | 18,000 | 47941321 |
| 716983 | May 24, 2011 | May 24, 2011 | Killam Oil Co., Ltd. | O.W. Killam 1807 #2 | 8,000 | 47941320 |
| 716963 | May 24, 2011 | May 24, 2011 | Chesapeake Operating, Inc. | Pge Dos #H 2HH | 12,000 | 47941317 |
| 716963Amendment | May 24, 2011 | May 24, 2011 | Chesapeake Operating, Inc. | Pge Dos #H 2HH | 12,000 | 47941317 |
| 716963Amendment | May 24, 2011 | May 24, 2011 | Chesapeake Operating, Inc. | Pge Dos #H 2HH | 12,000 | 47941317 |
| 716954 | May 24, 2011 | May 24, 2011 | Chesapeake Operating, Inc. | Gates 010 CHK-B 1286 #D 2HH | 9,000 | 47941318 |
| 716954Amendment | May 24, 2011 | May 24, 2011 | Chesapeake Operating, Inc. | Gates 010 CHK-B 1286 #D 2HH | 9,000 | 47941318 |
| 716953 | May 24, 2011 | May 24, 2011 | Chesapeake Operating, Inc. | Gates 010 CHK-B 1286 #D 1HH | 9,000 | 47941316 |
| 716953Amendment | May 24, 2011 | May 24, 2011 | Chesapeake Operating, Inc. | Gates 010 CHK-B 1286 #D 1HH | 9,000 | 47941316 |
| 716953Amendment | May 24, 2011 | May 24, 2011 | Chesapeake Operating, Inc. | Gates 010 CHK-B 1286 #D 1HH | 9,000 | 47941316 |
| 716950 | May 24, 2011 | May 24, 2011 | Chesapeake Operating, Inc. | Gates 010 CHK-a TR3 #J 1HH | 12,000 | 47941315 |
| 716950Amendment | May 24, 2011 | May 24, 2011 | Chesapeake Operating, Inc. | Gates 010 CHK-a TR3 #J 1HH | 12,000 | 47941315 |
| 716950Amendment | May 24, 2011 | May 24, 2011 | Chesapeake Operating, Inc. | Gates 010 CHK-a TR3 #J 1HH | 12,000 | 47941315 |
| 716949 | May 24, 2011 | May 24, 2011 | Chesapeake Operating, Inc. | Gates 010 CHK-a TR3 #J 2HH | 12,000 | 47941314 |
| 716949Amendment | May 24, 2011 | May 24, 2011 | Chesapeake Operating, Inc. | Gates 010 CHK-a TR3 #J 2HH | 12,000 | 47941314 |
| 716947 | May 24, 2011 | May 24, 2011 | Lewis Petro Properties, Inc. | La Moca Gas Unit S #18HH | 12,500 | 47941313 |
| 716750 | May 24, 2011 | May 24, 2011 | Devon Energy Production Co, L.P. | Garner, John Ranch #9HH | 11,000 | 47941311 |
| 716750Amendment | May 24, 2011 | May 24, 2011 | Devon Energy Production Co, L.P. | Garner, John Ranch #9HH | 11,000 | 47941311 |
| 716845 | May 23, 2011 | May 23, 2011 | Kinder Morgan Tejas Pipeline LLC | Hein Ranch #12 | 300 | 47941319 |
| 716753 | May 23, 2011 | May 23, 2011 | Devon Energy Production Co, L.P. | Garner, John Ranch #10HH | 11,000 | 47941310 |
| 716753Amendment | May 23, 2011 | May 23, 2011 | Devon Energy Production Co, L.P. | Garner, John Ranch #10HH | 11,000 | 47941310 |
| 716469 | May 23, 2011 | May 23, 2011 | Joe Kestner, L.L.C. | Puig Ruthada #2 | 2,000 | 47903170 |
| 716683 | May 20, 2011 | May 20, 2011 | Laredo Energy | Sot - la Cruz Tres Land,ltd. GU #2HH | 15,500 | 47941309 |
| 716606 | May 19, 2011 | May 19, 2011 | SM Energy Company | Briscoe R #14HH | 10,000 | 47941308 |
| 716570 | May 18, 2011 | May 18, 2011 | Laredo Energy | Reuthinger #2HH | 17,000 | 47941307 |
| 716439 | May 18, 2011 | May 18, 2011 | Swift Energy Operating, LLC | Fasken "B" EF #2HH | 12,500 | 47941306 |
| 716439Amendment | May 18, 2011 | May 18, 2011 | Swift Energy Operating, LLC | Fasken 'B' EF #2HH | 12,500 | 47941306 |
| 716439Amendment | May 18, 2011 | May 18, 2011 | Swift Energy Operating, LLC | Fasken 'B' #2HH | 12,500 | 47941306 |
| 716420 | May 18, 2011 | May 18, 2011 | Killam Oil Co., Ltd. | O.W. Killam -C- #2 | 8,500 | 47941305 |
| 716246 | May 16, 2011 | May 16, 2011 | Lewis Petro Properties, Inc. | Briscoe-Manry 1393 #24HH | 12,500 | 47941304 |
| 716199 | May 16, 2011 | May 16, 2011 | Escondido Resources II, LLC | Cerrito #18HH | 14,000 | 47941303 |
| 716199Amendment | May 16, 2011 | May 16, 2011 | Escondido Resources II, LLC | Cerrito #18HH | 14,000 | 47941303 |
| 716191 | May 13, 2011 | May 13, 2011 | Escondido Resources II, LLC | Cerrito #17HH | 14,000 | 47941302 |
| 716191Amendment | May 13, 2011 | May 13, 2011 | Escondido Resources II, LLC | Cerrito #17HH | 14,000 | 47941302 |
| 716181 | May 13, 2011 | May 13, 2011 | Killam Oil Co., Ltd. | Killam & Hurd Fee 1614 #6 | 7,000 | 47941301 |
| 716085 | May 13, 2011 | May 13, 2011 | Chesapeake Operating, Inc. | Faith-Yana #B 2HH | 9,000 | 47941300 |
| 716055 | May 12, 2011 | May 12, 2011 | Lewis Petro Properties, Inc. | Hachar 1476 #18HH | 17,000 | 47941299 |
| 715813 | May 10, 2011 | May 10, 2011 | Lewis Petro Properties, Inc. | Rubio #2HH | 17,000 | 47941298 |
| 715813Amendment | May 10, 2011 | May 10, 2011 | Lewis Petro Properties, Inc. | Rubio #2HH | 17,000 | 47941298 |
| 714107 | May 9, 2011 | May 9, 2011 | SM Energy Company | Briscoe G GU5 State #11HH | 10,000 | 47941265 |
| 715596 | May 6, 2011 | May 6, 2011 | Shell Western E&P | Piloncillo #E 2HH | 10,400 | 47941297 |
| 715596Amendment | May 6, 2011 | May 6, 2011 | Shell Western E&P | Piloncillo #E 2HH | 15,000 | 47941297 |
| 715582 | May 6, 2011 | May 6, 2011 | Rosetta Resources Operating LP | Gates 10 Rose A #1005H | 8,500 | 47941296 |
| 715378 | May 4, 2011 | May 4, 2011 | Lewis Petro Properties, Inc. | Fasken State A2719 #5HH | 17,000 | 47941295 |
| 715353 | May 4, 2011 | May 4, 2011 | Columbus Energy, LLC | Martinez, Sinesio #2 | 8,000 | 47930844 |
| 714904 | May 4, 2011 | May 4, 2011 | EOG Resources, Inc. | Rottersmann 250 #1 | 10,100 | 47936740 |
| 714542 | May 4, 2011 | May 4, 2011 | Shell Western E&P | Piloncillo #D 5HBH | 9,300 | 47941282 |
| 714542Amendment | May 4, 2011 | May 4, 2011 | Shell Western E&P | Piloncillo #D 5HBH | 15,000 | 47941282 |
| 714542Amendment | May 4, 2011 | May 4, 2011 | Shell Western E&P | Piloncillo #D 5HBH | 15,000 | 47941282 |
| 715004 | May 3, 2011 | May 3, 2011 | Enterprise Products Operatingllc | Rectifier PH2-74 #2074PH | 350 | 47941294 |
| 714968 | May 3, 2011 | May 3, 2011 | Shell Western E&P | Piloncillo #D 5HZH | 9,400 | 47941285 |
| 714968Amendment | May 3, 2011 | May 3, 2011 | Shell Western E&P | Piloncillo #D 5HZH | 15,000 | 47941285 |
| 714968Amendment | May 3, 2011 | May 3, 2011 | Shell Western E&P | Piloncillo #D 5HZH | 15,000 | 47941285 |
| 714967 | May 3, 2011 | May 3, 2011 | Shell Western E&P | Piloncillo #D 5HYH | 9,400 | 47941286 |
| 714967Amendment | May 3, 2011 | May 3, 2011 | Shell Western E&P | Piloncillo #D 5HYH | 15,000 | 47941286 |
| 714967Amendment | May 3, 2011 | May 3, 2011 | Shell Western E&P | Piloncillo #D 5HYH | 15,000 | 47941286 |
| 714537 | May 3, 2011 | May 3, 2011 | Shell Western E&P | Piloncillo #D 5HAH | 9,300 | 47941281 |
| 714537Amendment | May 3, 2011 | May 3, 2011 | Shell Western E&P | Piloncillo #D 5HAH | 15,000 | 47941281 |
| 715205 | May 2, 2011 | May 2, 2011 | Conocophillips Company | Vaquillas Ranch C #246 | 12,975 | 47941293 |
| 715137 | May 2, 2011 | May 2, 2011 | Lewis Petro Properties, Inc. | M. Lewis #1HH | 14,000 | 47941290 |
| 715028 | Apr 29, 2011 | Apr 29, 2011 | SM Energy Company | Galvan State #1HH | 10,000 | 47941289 |
| 714963 | Apr 29, 2011 | Apr 29, 2011 | Enterprise Products Operatingllc | Rectifier PH2-95 #2095PH | 350 | 47941292 |
| 714954 | Apr 29, 2011 | Apr 29, 2011 | Lewis Petro Properties, Inc. | Killam Gonzalez A #20HH | 17,000 | 47941287 |
| 714954Amendment | Apr 29, 2011 | Apr 29, 2011 | Lewis Petro Properties, Inc. | Killam-Gonzalez A #20HH | 17,000 | 47941287 |
| 714921 | Apr 29, 2011 | Apr 29, 2011 | Lewis Petro Properties, Inc. | Slaughter #1 | 17,000 | 47941284 |
| 714803 | Apr 27, 2011 | Apr 27, 2011 | Laredo Energy | St of TX Prieto San Juan GU #2HH | 15,500 | 47941283 |
| 714370 | Apr 21, 2011 | Apr 21, 2011 | Lewis Petro Properties, Inc. | Owen State 1128 #3HH | 12,500 | 47941278 |
| 714181 | Apr 20, 2011 | Apr 20, 2011 | Killam Oil Co., Ltd. | Lenore #2 | 7,000 | 47941279 |
| 714357 | Apr 19, 2011 | Apr 19, 2011 | Lewis Petro Properties, Inc. | Volz 1125 #2HH | 12,500 | 47941277 |
| 714305 | Apr 19, 2011 | Apr 19, 2011 | Lewis Petro Properties, Inc. | Fasken State A2721 #7HH | 17,000 | 47941275 |
| 714301 | Apr 19, 2011 | Apr 19, 2011 | Laredo Energy | State of Texas Puig Bros. Corp. #1HH | 16,000 | 47941274 |
| 714301Amendment | Apr 19, 2011 | Apr 19, 2011 | Laredo Energy | State of Texas Puig Bros. Corp. #1HH | 16,000 | 47941274 |
| 714301Amendment | Apr 19, 2011 | Apr 19, 2011 | Laredo Energy | State of Texas Puig Bros. Corp. #1HH | 16,000 | 47941274 |
| 714292 | Apr 19, 2011 | Apr 19, 2011 | Lewis Petro Properties, Inc. | Huisache Cattle Company B #4HH | 12,500 | 47941273 |
| 713336 | Apr 19, 2011 | Apr 19, 2011 | Shell Western E&P | Piloncillo #E 3HH | 10,800 | 47941276 |
| 713336Amendment | Apr 19, 2011 | Apr 19, 2011 | Shell Western E&P | Piloncillo #E 3HH | 15,000 | 47941276 |
| 714241 | Apr 18, 2011 | Apr 18, 2011 | Lewis Petro Properties, Inc. | Cox 2927 #13HH | 12,500 | 47941272 |
| 714238 | Apr 18, 2011 | Apr 18, 2011 | EOG Resources, Inc. | Slator Ranch #K 2 | 11,000 | 47941271 |
| 714238Amendment | Apr 18, 2011 | Apr 18, 2011 | EOG Resources, Inc. | Slator Ranch #K 2 | 11,000 | 47941271 |
| 714197 | Apr 15, 2011 | Apr 15, 2011 | Mohican Operating, L.L.C. | Bhe #1 | 9,900 | 47941269 |
| 714197Amendment | Apr 15, 2011 | Apr 15, 2011 | Mohican Operating, L.L.C. | Bhe #1 | 9,900 | 47941269 |
| 714147 | Apr 15, 2011 | Apr 15, 2011 | Anadarko E&P Company LP | Briscoe Chupadera Ranch #11HH | 7,500 | 47941267 |
| 714136 | Apr 15, 2011 | Apr 15, 2011 | Anadarko E&P Company LP | Briscoe Chupadera Ranch #10HH | 7,500 | 47941266 |
| 714099 | Apr 15, 2011 | Apr 15, 2011 | Lewis Petro Properties, Inc. | Long, J. S. #5HH | 12,500 | 47941264 |
| 714080 | Apr 15, 2011 | Apr 15, 2011 | SM Energy Company | Briscoe R #4HH | 10,000 | 47941263 |
| 714007 | Apr 15, 2011 | Apr 15, 2011 | Devon Energy Production Co, L.P. | Lomt-Vaquillas #19HH | 14,000 | 47941262 |
| 713865 | Apr 15, 2011 | Apr 15, 2011 | Laredo Energy | L.F. Puig III #2HH | 16,000 | 47941268 |
| 713346 | Apr 15, 2011 | Apr 15, 2011 | Shell Western E&P | Piloncillo #E 4HH | 10,800 | 47941270 |
| 713346Amendment | Apr 15, 2011 | Apr 15, 2011 | Shell Western E&P | Piloncillo #E 4HH | 15,000 | 47941270 |
| 713914 | Apr 14, 2011 | Apr 14, 2011 | Devon Energy Production Co, L.P. | Thomasma, Ray J. #19 | 11,400 | 47941261 |
| 713914Amendment | Apr 14, 2011 | Apr 14, 2011 | Devon Energy Production Co, L.P. | Thomasma, Ray J. #19 | 12,600 | 47941261 |
| 713629 | Apr 12, 2011 | Apr 12, 2011 | Escondido Resources II, LLC | Cerrito #16HH | 14,000 | 47941258 |
| 713629Amendment | Apr 12, 2011 | Apr 12, 2011 | Escondido Resources Oper Co, LLC | Cerrito I #16HH | 14,000 | 47941258 |
| 713602 | Apr 12, 2011 | Apr 12, 2011 | Lewis Petro Properties, Inc. | Gustavo Benavides 1537 #1HH | 12,500 | 47941257 |
| 713661 | Apr 11, 2011 | Apr 11, 2011 | Lewis Petro Properties, Inc. | La Moca Gas Unit P #17HH | 12,500 | 47941260 |
| 713661Amendment | Apr 11, 2011 | Apr 11, 2011 | Lewis Petro Properties, Inc. | La Moca Gas Unit P #17HH | 12,500 | 47941260 |
| 713633 | Apr 8, 2011 | Apr 8, 2011 | Escondido Resources II, LLC | Augusta-Kenton #6HH | 12,500 | 47941259 |