| 610001Amendment | Nov 23, 2005 | Nov 23, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B. G. #59 | 8,000 | 42733910 |
| 610001Amendment | Nov 23, 2005 | Nov 23, 2005 | Kerr-McGee Oil & Gas Onshore LP | De Garcia, B. G. #59 | 8,000 | 42733910 |
| 609996 | Nov 23, 2005 | Nov 23, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B.G. #60 | 8,100 | 42733909 |
| 609996Amendment | Nov 23, 2005 | Nov 23, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B.G. #60 | 8,100 | 42733909 |
| 609749 | Nov 18, 2005 | Nov 18, 2005 | Samson Lone Star LP | Montalvo #1 | 10,000 | 42733908 |
| 609548 | Nov 18, 2005 | Nov 18, 2005 | Opex Energy, LLC | Guerra State Gas Unit #2 | 6,016 | 42732622 |
| 609707 | Nov 17, 2005 | Nov 17, 2005 | Smith Production Inc. | Bloomberg, Samuel D. #46 | 11,000 | 42733907 |
| 609173 | Nov 8, 2005 | Nov 8, 2005 | Total E&P USA, Inc. | Slick, T. B. Estate #167 | 12,000 | 42733906 |
| 609033 | Nov 4, 2005 | Nov 4, 2005 | Bommer Engineering Co. | El Liebre #1 | 5,300 | 42733905 |
| 608846 | Nov 2, 2005 | Nov 2, 2005 | EOG Resources, Inc. | McClure #1 | 11,500 | 42733904 |
| 608846Amendment | Nov 2, 2005 | Nov 2, 2005 | EOG Resources, Inc. | McClure #1 | 13,000 | 42733904 |
| 608846Amendment | Nov 2, 2005 | Nov 2, 2005 | EOG Resources, Inc. | McClure #1 | 13,000 | 42733904 |
| 608569 | Oct 27, 2005 | Oct 27, 2005 | Total E&P USA, Inc. | Southwest Farm & Ranch-State #11 | 9,500 | 42733057 |
| 608515 | Oct 26, 2005 | Oct 26, 2005 | EOG Resources, Inc. | Southwest Texas Corp. #7 | 10,000 | 42733903 |
| 608423 | Oct 26, 2005 | Oct 26, 2005 | Shell Western E&P | Judd Estate-State #14 | 10,100 | 42733902 |
| 608363 | Oct 24, 2005 | Oct 24, 2005 | Total E&P USA, Inc. | Slick, T. B. Estate #166 | 12,000 | 42733901 |
| 608330 | Oct 24, 2005 | Oct 24, 2005 | Total E&P USA, Inc. | T.B. Slick Estate #159 | 13,500 | 42733790 |
| 607814 | Oct 24, 2005 | Oct 24, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Cardenas, R.R. #7 | 10,000 | 42733895 |
| 607814Amendment | Oct 24, 2005 | Oct 24, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Cardenas, R. R. #7 | 10,000 | 42733895 |
| 608168 | Oct 19, 2005 | Oct 19, 2005 | Samson Lone Star LP | Bentsen Tract I #6 | 10,000 | 42733900 |
| 608165 | Oct 19, 2005 | Oct 19, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B. G. #58 | 8,000 | 42733899 |
| 608090 | Oct 19, 2005 | Oct 19, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Cardenas, R. R. #8 | 8,200 | 42733898 |
| 607896 | Oct 18, 2005 | Oct 18, 2005 | Samson Lone Star LP | Bentsen Tract IV #2 | 10,000 | 42733896 |
| 607896Amendment | Oct 18, 2005 | Oct 18, 2005 | Samson Lone Star LP | Bentsen Tract IV #2 | 9,500 | 42733896 |
| 607991 | Oct 17, 2005 | Oct 17, 2005 | EOG Resources, Inc. | McClure North #1 | 10,500 | 42733897 |
| 607991Amendment | Oct 17, 2005 | Oct 17, 2005 | EOG Resources, Inc. | McClure North #1 | 11,000 | 42733897 |
| 607643 | Oct 12, 2005 | Oct 12, 2005 | L & B Oil and Gas Equipment, LLC | Austin, Carlos A. #1 | 4,500 | 42731470 |
| 607643Amendment | Oct 12, 2005 | Oct 12, 2005 | L & B Oil and Gas Equipment, LLC | Austin, Carlos A. #1 | 3,900 | 42731470 |
| 607587 | Oct 10, 2005 | Oct 10, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Speer, Geo. H. St. "B" #26 | 6,515 | 42732981 |
| 607459 | Oct 6, 2005 | Oct 6, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B. G. #56 | 8,000 | 42733894 |
| 607369 | Oct 6, 2005 | Oct 6, 2005 | EOG Resources, Inc. | Las Escobas #6 | 9,000 | 42733893 |
| 607373 | Oct 5, 2005 | Oct 5, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Frost National Bank -B- #36 | 9,000 | 42733835 |
| 607371 | Oct 5, 2005 | Oct 5, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Speer, Geo. H. St. "B" #27 | 6,543 | 42733058 |
| 607300 | Oct 4, 2005 | Oct 4, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Slick Estate -C- #18 | 12,000 | 42733892 |
| 607300Amendment | Oct 4, 2005 | Oct 4, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Slick Estate -C- #18 | 12,800 | 42733892 |
| 607104 | Sep 29, 2005 | Sep 29, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B. G. #57 | 8,500 | 42733891 |
| 606914 | Sep 29, 2005 | Sep 29, 2005 | Metano Energy, LP | Sheerin Gas Unit #1 | 9,458 | 42733890 |
| 606837 | Sep 26, 2005 | Sep 26, 2005 | Samson Lone Star LP | Bentsen IV #1 | 10,062 | 42733770 |
| 606740 | Sep 26, 2005 | Sep 26, 2005 | Smith Production Inc. | Bloomberg, Samuel D. #45 | 11,000 | 42733889 |
| 606704 | Sep 21, 2005 | Sep 21, 2005 | EOG Resources, Inc. | Canales #1 | 9,500 | 42733888 |
| 606635 | Sep 21, 2005 | Sep 21, 2005 | Total E&P USA, Inc. | State Slick D #24 | 11,000 | 42733887 |
| 606635Amendment | Sep 21, 2005 | Sep 21, 2005 | Total E&P USA, Inc. | State Slick D #24 | 11,000 | 42733887 |
| 606500 | Sep 19, 2005 | Sep 19, 2005 | Smith Production Inc. | Bloomberg, Samuel D. #44 | 12,000 | 42733886 |
| 606500Amendment | Sep 19, 2005 | Sep 19, 2005 | Smith Production Inc. | Bloomberg, Samuel D. #44 | 12,000 | 42733886 |
| 606499 | Sep 19, 2005 | Sep 19, 2005 | Smith Production Inc. | Bloomberg, Samuel D. #43 | 12,000 | 42733885 |
| 606104 | Sep 9, 2005 | Sep 9, 2005 | Total E&P USA, Inc. | T. B. Slick Estate #165 | 10,000 | 42733884 |
| 605993 | Sep 9, 2005 | Sep 9, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B.G. #54 | 8,500 | 42733883 |
| 605992 | Sep 8, 2005 | Sep 8, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B.G. #55 | 8,000 | 42733882 |
| 605992Amendment | Sep 8, 2005 | Sep 8, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B. G. #55 | 8,000 | 42733882 |
| 605843 | Sep 2, 2005 | Sep 2, 2005 | Mortimer Production Company | Hiles/Garza #1 #1 | 7,000 | 42733881 |
| 605840 | Sep 2, 2005 | Sep 2, 2005 | Shell Western E&P | Bentsen Bros. "B" #16 | 10,600 | 42733880 |
| 605730 | Aug 31, 2005 | Aug 31, 2005 | Samson Lone Star LP | Bentsen Tract I #5 | 10,000 | 42733879 |
| 605634 | Aug 30, 2005 | Aug 30, 2005 | Bommer Engineering Co. | Gutierrez #3 | 5,300 | 42733878 |
| 605634Amendment | Aug 30, 2005 | Aug 30, 2005 | Bommer Engineering Co. | Gutierrez #3 | 5,300 | 42733878 |
| 605575 | Aug 29, 2005 | Aug 29, 2005 | Acock/Anaqua Operating Co., LP | Saenz #5 | 5,700 | 42733877 |
| 605575Amendment | Aug 29, 2005 | Aug 29, 2005 | Acock/Anaqua Operating Co., LP | Saenz #5 | 5,700 | 42733877 |
| 605477 | Aug 26, 2005 | Aug 26, 2005 | Smith Production Inc. | Bloomberg, Samuel D. #42 | 10,000 | 42733876 |
| 605455 | Aug 25, 2005 | Aug 25, 2005 | BPL Exploration, Ltd. | Martinez #1 | 5,000 | 42733875 |
| 605215 | Aug 23, 2005 | Aug 23, 2005 | Mortimer Production Company | Guerra #3 | 6,000 | 42733874 |
| 604950 | Aug 16, 2005 | Aug 16, 2005 | Smith Production Inc. | Slick State #2 | 10,500 | 42733656 |
| 604940 | Aug 15, 2005 | Aug 15, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Reilly Heirs #32 | 8,500 | 42733873 |
| 604940Amendment | Aug 15, 2005 | Aug 15, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Reilly Heirs #32 | 8,500 | 42733873 |
| 604826 | Aug 11, 2005 | Aug 11, 2005 | Shell Western E&P | Bentsen Brothers-State #11 | 10,100 | 42733872 |
| 604762 | Aug 11, 2005 | Aug 11, 2005 | Ascent Operating, LP | Brannan Heirs Gas Unit #5 | 10,000 | 42733871 |
| 604628 | Aug 9, 2005 | Aug 9, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Alvarez-Hinojosa Gas Unit #5 | 8,100 | 42733870 |
| 604628Amendment | Aug 9, 2005 | Aug 9, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Alvarez-Hinojosa Gas Unit #5 | 8,100 | 42733870 |
| 604558 | Aug 8, 2005 | Aug 8, 2005 | EOG Resources, Inc. | Eia Properties #1 | 9,700 | 42733869 |
| 604481 | Aug 5, 2005 | Aug 5, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Slick Estate C #17 | 10,000 | 42733350 |
| 604418 | Aug 4, 2005 | Aug 4, 2005 | Hughes, Dan A. Company | Morse #7 | 11,500 | 42733868 |
| 604294 | Aug 3, 2005 | Aug 3, 2005 | Bommer Engineering Co. | Guerra, R.R. #1 | 7,300 | 42733867 |
| 604282 | Aug 2, 2005 | Aug 2, 2005 | White Oak Operating Company LLC | Ricaby #7 | 5,000 | 42733866 |
| 604282Amendment | Aug 2, 2005 | Aug 2, 2005 | White Oak Operating Company LLC | Ricaby #7 | 5,000 | 42733866 |
| 604282Amendment | Aug 2, 2005 | Aug 2, 2005 | White Oak Operating Company LLC | Ricaby #7 | 4,510 | 42733866 |
| 604263 | Aug 2, 2005 | Aug 2, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Hermann, E. #9 | 8,000 | 42733865 |
| 604083 | Jul 28, 2005 | Jul 28, 2005 | Opex Energy, LLC | Ricaby Trust #1 | 6,000 | 42733864 |
| 603996 | Jul 26, 2005 | Jul 26, 2005 | Total E&P USA, Inc. | Slick, T. B. Estate #163 | 12,000 | 42733862 |
| 603994 | Jul 26, 2005 | Jul 26, 2005 | Total E&P USA, Inc. | Slick, T. B. Estate #162 | 12,000 | 42733863 |
| 603927 | Jul 26, 2005 | Jul 26, 2005 | El Paso Production Oil & Gas Co. | Samano #42 | 9,825 | 42733583 |
| 603895 | Jul 25, 2005 | Jul 25, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Semmes Trust et al 906 #5 | 8,100 | 42733320 |
| 603853 | Jul 22, 2005 | Jul 22, 2005 | White Oak Operating Company LLC | Parks, W. S. et Al #12 | 5,000 | 42733860 |
| 603704 | Jul 21, 2005 | Jul 21, 2005 | EOG Resources, Inc. | Southwest Texas Corp #6 | 10,000 | 42733859 |
| 603621 | Jul 19, 2005 | Jul 19, 2005 | White Oak Operating Company LLC | Fuentes, J. R. et Al #6 | 5,000 | 42733858 |
| 603621Amendment | Jul 19, 2005 | Jul 19, 2005 | White Oak Operating Company LLC | Fuentes, J. R. et Al #6 | 5,010 | 42733858 |
| 603535 | Jul 15, 2005 | Jul 15, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Speer, Geo. H. State -D- #8 | 9,700 | 42733857 |
| 603424 | Jul 14, 2005 | Jul 14, 2005 | Shell Western E&P | Garza, A.M. - State #20 | 9,900 | 42733856 |
| 603346 | Jul 13, 2005 | Jul 13, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Slick, T. B. B-232 #196 | 6,600 | 42733447 |
| 603346Amendment | Jul 13, 2005 | Jul 13, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Slick, T. B. B-232 #196 | 6,600 | 42733447 |
| 603321 | Jul 12, 2005 | Jul 12, 2005 | White Oak Operating Company LLC | Seabury, Margaret Mrs. #6 | 5,000 | 42733855 |
| 603321Amendment | Jul 12, 2005 | Jul 12, 2005 | White Oak Operating Company LLC | Seabury, Margaret Mrs. #6 | 5,010 | 42733855 |
| 603257 | Jul 12, 2005 | Jul 12, 2005 | Noble Energy Inc | Martinez B #36 | 4,400 | 42732261 |
| 603221 | Jul 12, 2005 | Jul 12, 2005 | Kerr-McGee Oil & Gas Onshore LLC | A. G. Hermann Gas Unit #11 | 8,500 | 42733854 |
| 603153 | Jul 8, 2005 | Jul 8, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B. G. #51 | 8,000 | 42733853 |
| 603153Amendment | Jul 8, 2005 | Jul 8, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B. G. #51 | 8,000 | 42733853 |
| 602751 | Jun 29, 2005 | Jun 29, 2005 | Ascent Operating, LP | Garza-Hitchcock et al G.U. #8 | 10,500 | 42733852 |
| 602469 | Jun 24, 2005 | Jun 24, 2005 | El Paso Production Oil & Gas Co. | Saga #1 | 15,000 | 42733851 |
| 560565Amendment | Jun 24, 2005 | Jun 24, 2005 | El Paso Production Oil & Gas Co. | Guerra GU "A" #10 | 12,550 | 42732647 |
| 602384 | Jun 22, 2005 | Jun 22, 2005 | Smith Production Inc. | Bloomberg, Samuel D. #41 | 13,500 | 42733850 |
| 602166 | Jun 16, 2005 | Jun 16, 2005 | EOG Resources, Inc. | Southwest Texas Corp. #5 | 11,500 | 42733849 |
| 602103 | Jun 15, 2005 | Jun 15, 2005 | EOG Resources, Inc. | Southwest Texas Corp. #1 | 10,200 | 42733750 |
| 601988 | Jun 15, 2005 | Jun 15, 2005 | El Paso Production Oil & Gas Co. | Guerra GU "A" #13 | 12,350 | 42732676 |