| 665843 | Jul 22, 2008 | Jul 22, 2008 | Lewis Petro Properties, Inc. | Owen 3 #6 | 7,600 | 47940295 |
| 665784 | Jul 21, 2008 | Jul 21, 2008 | Rosetta Resources Operating LP | Rosetta- Benavides #1 | 8,600 | 47940294 |
| 665359 | Jul 17, 2008 | Jul 17, 2008 | Killam Oil Co., Ltd. | Killam Hurd McLean 121 #9 | 15,000 | 47940292 |
| 665338 | Jul 17, 2008 | Jul 17, 2008 | Lewis Petro Properties, Inc. | Palafox-State 107 #40 | 7,200 | 47940291 |
| 664181 | Jul 17, 2008 | Jul 17, 2008 | Killam Oil Co., Ltd. | Killam & Hurd Fee 1496 #2 | 9,500 | 47940276 |
| 665751 | Jul 16, 2008 | Jul 16, 2008 | EOG Resources, Inc. | Gallagher, Gloria B. #8HH | 13,000 | 47940293 |
| 664979 | Jul 11, 2008 | Jul 11, 2008 | EOG Resources, Inc. | Cactus Jack #10 | 8,500 | 47940289 |
| 665833 | Jul 10, 2008 | Jul 10, 2008 | Laredo Energy | BMT "A" #1 | 12,500 | 47940290 |
| 665833Amendment | Jul 10, 2008 | Jul 10, 2008 | Laredo Energy | BMT "A" #1 | 12,500 | 47940290 |
| 664895 | Jul 10, 2008 | Jul 10, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #311 | 8,675 | 47940288 |
| 664843 | Jul 9, 2008 | Jul 9, 2008 | Virtex Operating Company, Inc. | Miller-Stokes 1968 #1 | 8,000 | 47940287 |
| 664742 | Jul 7, 2008 | Jul 7, 2008 | Lewis Petro Properties, Inc. | Garner Ranch 817 #3 | 7,400 | 47940286 |
| 664742Amendment | Jul 7, 2008 | Jul 7, 2008 | Lewis Petro Properties, Inc. | Garner Ranch 817 #3 | 7,400 | 47940286 |
| 664741 | Jul 7, 2008 | Jul 7, 2008 | Legend Natural Gas III, LP | Galvan Ranch J12 #1 | 8,000 | 47940285 |
| 664740 | Jul 7, 2008 | Jul 7, 2008 | Legend Natural Gas III, LP | Galvan Ranch J9 #1 | 8,000 | 47940284 |
| 664668 | Jul 3, 2008 | Jul 3, 2008 | Lewis Petro Properties, Inc. | Palafox Exploration Co. 2182 #48 | 7,200 | 47940283 |
| 664414 | Jun 30, 2008 | Jun 30, 2008 | EOG Resources, Inc. | Slator Ranch #1AG | 13,000 | 47940282 |
| 664407 | Jun 28, 2008 | Jun 28, 2008 | EOG Resources, Inc. | Slator Ranch #1AH | 11,500 | 47940281 |
| 664312 | Jun 28, 2008 | Jun 28, 2008 | Forest Oil Corporation | Hubberd, William "A2" #81 | 9,300 | 47940279 |
| 664235 | Jun 28, 2008 | Jun 28, 2008 | Laredo Energy | Barrera-Ramirez G.U. No. 1 #3 | 10,500 | 47940278 |
| 664235Amendment | Jun 28, 2008 | Jun 28, 2008 | Laredo Energy | C.H. Ramirez Minerals Ltd. #2 | 10,500 | 47940278 |
| 664190 | Jun 27, 2008 | Jun 27, 2008 | Lewis Petro Properties, Inc. | Owen Briscoe 1133 #7 | 7,800 | 47940277 |
| 660537 | Jun 27, 2008 | Jun 27, 2008 | Killam Oil Co., Ltd. | Garcia 608 #3 | 11,800 | 47939219 |
| 664085 | Jun 26, 2008 | Jun 26, 2008 | Legend Natural Gas III, LP | Galvan Ranch P9 #2 | 8,000 | 47940275 |
| 664069 | Jun 25, 2008 | Jun 25, 2008 | Legend Natural Gas III, LP | Galvan Ranch P13 #3 | 8,000 | 47940274 |
| 664067 | Jun 25, 2008 | Jun 25, 2008 | Legend Natural Gas III, LP | Galvan Ranch P13 #2 | 8,000 | 47940273 |
| 664066 | Jun 25, 2008 | Jun 25, 2008 | Legend Natural Gas III, LP | Galvan Ranch P12 #3 | 8,000 | 47940272 |
| 664066Amendment | Jun 25, 2008 | Jun 25, 2008 | Legend Natural Gas III, LP | Galvan Ranch P12 #3 | 8,000 | 47940272 |
| 664063 | Jun 25, 2008 | Jun 25, 2008 | Legend Natural Gas III, LP | Galvan Ranch P12 #2 | 8,000 | 47940271 |
| 664063Amendment | Jun 25, 2008 | Jun 25, 2008 | Legend Natural Gas III, LP | Galvan Ranch P12 #2 | 8,000 | 47940271 |
| 664016 | Jun 25, 2008 | Jun 25, 2008 | Chevron U. S. A. Inc. | Bruni Mineral Trust "B" #42 | 10,500 | 47940269 |
| 663993 | Jun 25, 2008 | Jun 25, 2008 | Lewis Petro Properties, Inc. | Leyendecker/Hunter "B" 2178 #26 | 8,000 | 47940270 |
| 663976 | Jun 25, 2008 | Jun 25, 2008 | Lewis Petro Properties, Inc. | Booth Unocal "H" #15UH | 13,000 | 47940268 |
| 663699 | Jun 25, 2008 | Jun 25, 2008 | Forest Oil Corporation | Vaquillas Ranch "3" #4 | 10,100 | 47940280 |
| 663699Amendment | Jun 25, 2008 | Jun 25, 2008 | Forest Oil Corporation | Vaquillas Ranch "3" #4 | 10,100 | 47940280 |
| 663848 | Jun 23, 2008 | Jun 23, 2008 | Rosetta Resources Operating LP | Joe Finley #1 | 7,750 | 47940267 |
| 663848Amendment | Jun 23, 2008 | Jun 23, 2008 | Rosetta Resources Operating LP | Joe Finley #1 | 7,750 | 47940267 |
| 663818 | Jun 23, 2008 | Jun 23, 2008 | St. Mary Land & Exploration Co. | Briscoe "G" #1041 | 6,200 | 47940266 |
| 663785 | Jun 21, 2008 | Jun 21, 2008 | St. Mary Land & Exploration Co. | Petty Ranch #1918 | 6,540 | 47940265 |
| 663704 | Jun 21, 2008 | Jun 21, 2008 | Forest Oil Corporation | Vaquillas Ranch "3" #5 | 9,700 | 47940264 |
| 663704Amendment | Jun 21, 2008 | Jun 21, 2008 | Forest Oil Corporation | Vaquillas Ranch "3" #5 | 9,700 | 47940264 |
| 663676 | Jun 21, 2008 | Jun 21, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #309 | 8,700 | 47940263 |
| 663586 | Jun 21, 2008 | Jun 21, 2008 | Columbus Energy, LLC | J.M. Ruiz #7QC | 2,000 | 47940262 |
| 663240 | Jun 20, 2008 | Jun 20, 2008 | Killam Oil Co., Ltd. | Killam, O. W. #14 | 1,600 | 47940256 |
| 663485 | Jun 18, 2008 | Jun 18, 2008 | Columbus Energy, LLC | McKendrick #4QC | 1,700 | 47940260 |
| 663481 | Jun 18, 2008 | Jun 18, 2008 | Columbus Energy, LLC | Ruiz, J. M. #8QC | 2,000 | 47940261 |
| 663297 | Jun 18, 2008 | Jun 18, 2008 | Devon Energy Production Co, L.P. | Vaquillas #4 | 12,000 | 47940259 |
| 663297Amendment | Jun 18, 2008 | Jun 18, 2008 | Devon Energy Production Co, L.P. | Vaquillas #4 | 12,000 | 47940259 |
| 663256 | Jun 18, 2008 | Jun 18, 2008 | Chevron U. S. A. Inc. | Bruni Mineral Trust "B" #43 | 10,500 | 47940257 |
| 663196 | Jun 17, 2008 | Jun 17, 2008 | Lewis Petro Properties, Inc. | Gates "N" TR1 #11 | 6,200 | 47940255 |
| 663194 | Jun 17, 2008 | Jun 17, 2008 | Lewis Petro Properties, Inc. | Garner Ranch 817 #2 | 7,400 | 47940254 |
| 663193 | Jun 17, 2008 | Jun 17, 2008 | Lewis Petro Properties, Inc. | Garner Ranch 817 #1 | 7,400 | 47940253 |
| 663124 | Jun 17, 2008 | Jun 17, 2008 | Mohican Oil & Gas, L.L.C. | Alexander Ranch #1 | 7,100 | 47940252 |
| 664358 | Jun 16, 2008 | Jun 16, 2008 | EOG Resources, Inc. | Garner, Tully C. #86 | 8,500 | 47940258 |
| 663102 | Jun 16, 2008 | Jun 16, 2008 | Killam Oil Co., Ltd. | Killam, O. W. #13 | 1,600 | 47940250 |
| 663078 | Jun 16, 2008 | Jun 16, 2008 | Lewis Petro Properties, Inc. | Gates 1270 #31A | 6,200 | 47940249 |
| 663046 | Jun 16, 2008 | Jun 16, 2008 | Devon Energy Production Co, L.P. | Thomasma, Ray J. "F" #16 | 10,200 | 47939257 |
| 663020 | Jun 13, 2008 | Jun 13, 2008 | Laredo Energy | Barrera-Ramirez Gas Unit No. 1 #2 | 10,500 | 47940247 |
| 663020Amendment | Jun 13, 2008 | Jun 13, 2008 | Laredo Energy | C.H. Ramirez Minerals, Ltd. #1 #2 | 10,500 | 47940247 |
| 662934 | Jun 13, 2008 | Jun 13, 2008 | Columbus Energy, LLC | D. D. Hachar #46QC | 1,700 | 47940246 |
| 662930 | Jun 13, 2008 | Jun 13, 2008 | Columbus Energy, LLC | D.D. Hachar #45QC | 1,700 | 47940245 |
| 662928 | Jun 13, 2008 | Jun 13, 2008 | Columbus Energy, LLC | D. D. Hachar #44QC | 1,700 | 47940251 |
| 662867 | Jun 13, 2008 | Jun 13, 2008 | EOG Resources, Inc. | Norvehc #3HH | 11,000 | 47940244 |
| 662867Amendment | Jun 13, 2008 | Jun 13, 2008 | EOG Resources, Inc. | Norvehc #3HH | 11,000 | 47940244 |
| 662622 | Jun 11, 2008 | Jun 11, 2008 | Barrett Brothers Oil & Gas, Inc. | Las Raices #1R | 7,200 | 47940248 |
| 662498 | Jun 9, 2008 | Jun 9, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #310 | 8,700 | 47940243 |
| 662326 | Jun 7, 2008 | Jun 7, 2008 | St. Mary Land & Exploration Co. | Briscoe "G" #1258 | 6,300 | 47940241 |
| 662322 | Jun 7, 2008 | Jun 7, 2008 | St. Mary Land & Exploration Co. | Briscoe "G" #1257 | 6,300 | 47940240 |
| 662320 | Jun 7, 2008 | Jun 7, 2008 | Columbus Energy, LLC | Ruiz, J M #6 | 8,200 | 47940242 |
| 662320Amendment | Jun 7, 2008 | Jun 7, 2008 | Columbus Energy, LLC | Ruiz, J. M. #6 | 8,200 | 47940242 |
| 662283 | Jun 6, 2008 | Jun 6, 2008 | Lewis Petro Properties, Inc. | Briscoe-Manry 1393 #5 | 8,000 | 47940239 |
| 662177 | Jun 5, 2008 | Jun 5, 2008 | Kerr-McGee Oil & Gas Onshore LP | McKendrick #30 | 11,000 | 47940238 |
| 662177Amendment | Jun 5, 2008 | Jun 5, 2008 | Kerr-McGee Oil & Gas Onshore LP | McKendrick #30 | 11,000 | 47940238 |
| 662148 | Jun 5, 2008 | Jun 5, 2008 | Forest Oil Corporation | William Hubberd "B2" #82 | 9,500 | 47940237 |
| 661972 | Jun 3, 2008 | Jun 3, 2008 | St. Mary Land & Exploration Co. | Petty Ranch #1712 | 6,400 | 47940236 |
| 661290 | Jun 3, 2008 | Jun 3, 2008 | Kerr-McGee Oil & Gas Onshore LP | McKendrick #28 | 11,000 | 47940228 |
| 661789 | May 30, 2008 | May 30, 2008 | Killam Oil Co., Ltd. | K&H Fee 1594 #1 | 7,500 | 47940235 |
| 661553 | May 30, 2008 | May 30, 2008 | Valence Operating Company | Benavides, Carlos #2 | 8,750 | 47933734 |
| 661553Amendment | May 30, 2008 | May 30, 2008 | Valence Operating Company | Benavides, Carlos #2 | 8,750 | 47933734 |
| 658381 | May 29, 2008 | May 29, 2008 | Columbus Energy, LLC | Prevost #2RE | 8,045 | 47930886 |
| 661567 | May 27, 2008 | May 27, 2008 | St. Mary Land & Exploration Co. | Gates Ranch "D" #1188 | 6,800 | 47940233 |
| 661367 | May 23, 2008 | May 23, 2008 | St. Mary Land & Exploration Co. | Petty Ranch #2019 | 6,620 | 47940232 |
| 661365 | May 23, 2008 | May 23, 2008 | Mohican Oil & Gas, L.L.C. | Olmitos Ranch 1529 #5 | 9,950 | 47940231 |
| 661365Amendment | May 23, 2008 | May 23, 2008 | Mohican Oil & Gas, L.L.C. | Olmitos Ranch 1529 #5 | 9,800 | 47940231 |
| 661350 | May 22, 2008 | May 22, 2008 | St. Mary Land & Exploration Co. | Petty Ranch #2119 | 6,700 | 47940230 |
| 661301 | May 22, 2008 | May 22, 2008 | Lewis Petro Properties, Inc. | Chilton, John Jr. "A" #3 | 9,000 | 47940229 |
| 661261 | May 22, 2008 | May 22, 2008 | Lewis Petro Properties, Inc. | Saunders State 106 "H" #12 | 13,000 | 47940227 |
| 661261Amendment | May 22, 2008 | May 22, 2008 | Lewis Petro Properties, Inc. | Saunders State 106 "H" #12H | 13,000 | 47940227 |
| 661096 | May 22, 2008 | May 22, 2008 | Virtex Operating Company, Inc. | Holland 1374 #1 | 7,950 | 47940226 |
| 661092 | May 22, 2008 | May 22, 2008 | EOG Resources, Inc. | Benavides, Arturo-St. #4HH | 11,900 | 47940225 |
| 659604 | May 22, 2008 | May 22, 2008 | Conocophillips Company | Vaquillas Ranch A5 #230 | 10,150 | 47940193 |
| 660992 | May 20, 2008 | May 20, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #306 | 9,065 | 47940224 |
| 660925 | May 20, 2008 | May 20, 2008 | EOG Resources, Inc. | Benavides, Arturo #9 | 15,000 | 47940223 |
| 660512 | May 20, 2008 | May 20, 2008 | Columbus Energy, LLC | Hachar, D. D. #43 | 8,200 | 47940222 |
| 660512Amendment | May 20, 2008 | May 20, 2008 | Columbus Energy, LLC | Hachar, D. D. #43 | 8,200 | 47940222 |
| 660857 | May 19, 2008 | May 19, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #308 | 8,725 | 47940220 |
| 660848 | May 19, 2008 | May 19, 2008 | Rosetta Resources Operating LP | South Callaghan Ranch #307 | 8,670 | 47940219 |
| 660815 | May 19, 2008 | May 19, 2008 | Rosetta Resources Operating LP | Coats #2 | 8,100 | 47940218 |
| 660812 | May 19, 2008 | May 19, 2008 | Rosetta Resources Operating LP | Coats #1 | 8,100 | 47940217 |
| 660710 | May 15, 2008 | May 15, 2008 | Columbus Energy, LLC | Clark, N. H. #19 | 6,700 | 47940216 |