| 620045 | May 26, 2006 | May 26, 2006 | Kerr-McGee Oil & Gas Onshore LP | Hall J. F. State -A- #21 | 10,100 | 42733975 |
| 619707 | May 23, 2006 | May 23, 2006 | Smith Production Inc. | Bloomberg, Samuel D. #49 | 12,000 | 42733974 |
| 619028 | May 17, 2006 | May 17, 2006 | El Paso Production Oil & Gas Co. | USA #207 | 13,198 | 42732811 |
| 619274 | May 16, 2006 | May 16, 2006 | Integrated Operating Corporation | Heard, J. F. B. #4W | 4,410 | 42733973 |
| 619001 | May 16, 2006 | May 16, 2006 | L & B Oil and Gas Equipment, LLC | Hiles, Betty #1 | 4,500 | 42731467 |
| 619245 | May 12, 2006 | May 12, 2006 | Houston Exploration Company, The | T. B. Slick Estate "AV" 535 #211 | 8,500 | 42733971 |
| 619243 | May 12, 2006 | May 12, 2006 | Houston Exploration Company, The | Slick, T. B. Estate "AV" 535 #210 | 9,500 | 42733970 |
| 619224 | May 12, 2006 | May 12, 2006 | Smith Production Inc. | Slick State "B" #8 | 12,000 | 42733969 |
| 618777 | May 5, 2006 | May 5, 2006 | Kerr-McGee Oil & Gas Onshore LP | Montalvo, N. R. #15 | 6,370 | 42733402 |
| 618747 | May 5, 2006 | May 5, 2006 | Shell Western E&P | Slick, T. B. Estate #170 | 13,000 | 42733968 |
| 618414 | May 4, 2006 | May 4, 2006 | El Paso Production Oil & Gas Co. | Guerra Gas Unit "A" #9 | 11,048 | 42732573 |
| 618414Amendment | May 4, 2006 | May 4, 2006 | El Paso E & P Company, L. P. | Guerra Gas Unit "A" #9 | 11,048 | 42732573 |
| 618643 | May 3, 2006 | May 3, 2006 | Smith Production Inc. | Slick State "B" #7 | 12,000 | 42733967 |
| 618498 | May 2, 2006 | May 2, 2006 | Kerr-McGee Oil & Gas Onshore LP | Hermann, E. #10 | 9,000 | 42733966 |
| 618462 | May 1, 2006 | May 1, 2006 | Houston Exploration Company, The | Slick, T. B. Estate "a" 529 #209 | 9,500 | 42733965 |
| 618398 | Apr 28, 2006 | Apr 28, 2006 | EOG Resources, Inc. | McClure #3 | 8,000 | 42733964 |
| 618396 | Apr 28, 2006 | Apr 28, 2006 | EOG Resources, Inc. | Mc Clure #4 | 8,000 | 42733963 |
| 617946 | Apr 21, 2006 | Apr 21, 2006 | EOG Resources, Inc. | Nilo Shallow a GU #4 | 7,750 | 42732758 |
| 617514 | Apr 13, 2006 | Apr 13, 2006 | Kerr-McGee Oil & Gas Onshore LP | De Garcia, B.G. #65 | 8,700 | 42733962 |
| 617224 | Apr 12, 2006 | Apr 12, 2006 | Kerr-McGee Oil & Gas Onshore LP | Cardenas, R. R. #10 | 8,575 | 42733961 |
| 617228 | Apr 7, 2006 | Apr 7, 2006 | Smith Production Inc. | Slick State "B" #6 | 12,000 | 42733960 |
| 616895 | Apr 6, 2006 | Apr 6, 2006 | El Paso Production Oil & Gas Co. | Saga #4 | 13,000 | 42733959 |
| 616969 | Apr 5, 2006 | Apr 5, 2006 | Shell Western E&P | Slick, T. B. Estate #135 | 14,000 | 42733431 |
| 616916 | Apr 4, 2006 | Apr 4, 2006 | Kerr-McGee Oil & Gas Onshore LP | Hall, J.F. State -A- #20 | 10,200 | 42733958 |
| 616915 | Apr 4, 2006 | Apr 4, 2006 | Kerr-McGee Oil & Gas Onshore LP | Frost National Bank -B- #39 | 8,000 | 42733957 |
| 616674 | Apr 3, 2006 | Apr 3, 2006 | Headington Oil Company, L.P. | Murch, B. L. #11 | 11,000 | 42733490 |
| 616459 | Mar 27, 2006 | Mar 27, 2006 | Houston Exploration Company, The | Slick, T. B. Estate "B-266" #208 | 7,500 | 42733956 |
| 616448 | Mar 27, 2006 | Mar 27, 2006 | Houston Exploration Company, The | T. B. Slick Estate "B-222" #207 | 6,800 | 42733955 |
| 616187 | Mar 27, 2006 | Mar 27, 2006 | El Paso Production Oil & Gas Co. | USA #202 | 9,300 | 42732534 |
| 616327 | Mar 24, 2006 | Mar 24, 2006 | BPL Exploration, Ltd. | Martinez #2 | 6,700 | 42733954 |
| 616181 | Mar 22, 2006 | Mar 22, 2006 | Kerr-McGee Oil & Gas Onshore LP | De Garcia, B.G. #64 | 10,500 | 42733953 |
| 616179 | Mar 21, 2006 | Mar 21, 2006 | Smith Production Inc. | Slick State "B" #5 | 12,000 | 42733952 |
| 616115 | Mar 21, 2006 | Mar 21, 2006 | Opex Energy, LLC | Starr Produce Company #1 | 9,800 | 42733951 |
| 616009 | Mar 20, 2006 | Mar 20, 2006 | Kebo Oil & Gas, Inc. | Sheerin Deep Gas Unit #3 | 11,500 | 42733950 |
| 616009Amendment | Mar 20, 2006 | Mar 20, 2006 | Raptor Resources, Inc. | Sheerin Deep Gas Unit #3 | 4,100 | 42733950 |
| 616009Amendment | Mar 20, 2006 | Mar 20, 2006 | Neuhaus, V. F. Properties, Inc. | Sheerin Deep Gas Unit #3 | 4,100 | 42733950 |
| 615661 | Mar 20, 2006 | Mar 20, 2006 | Kerr-McGee Oil & Gas Onshore LP | Cardenas, R.R. #9 | 8,550 | 42733948 |
| 615670 | Mar 15, 2006 | Mar 15, 2006 | Wagner Oil Company | Garcia "B" #13 | 8,350 | 42733949 |
| 615309 | Mar 6, 2006 | Mar 6, 2006 | Headington Oil Company, L.P. | Simpson #1 | 12,250 | 42733947 |
| 614337 | Mar 2, 2006 | Mar 2, 2006 | Trap Rock Oil, Ltd. | La Brisa Ranch/State 542 #12 | 8,000 | 42733940 |
| 614337Amendment | Mar 2, 2006 | Mar 2, 2006 | Trap Rock Oil, Ltd. | La Brisa Ranch/State 542 #12 | 8,000 | 42733940 |
| 614999 | Feb 28, 2006 | Feb 28, 2006 | EOG Resources, Inc. | Las Escobas #7 | 8,900 | 42733946 |
| 614858 | Feb 27, 2006 | Feb 27, 2006 | Kerr-McGee Oil & Gas Onshore LLC | Degarcia, B.G. #63 | 8,700 | 42733945 |
| 614856 | Feb 27, 2006 | Feb 27, 2006 | Kerr-McGee Oil & Gas Onshore LLC | Degarcia, B.G. #62 | 8,700 | 42733944 |
| 614313 | Feb 27, 2006 | Feb 27, 2006 | Trap Rock Oil, Ltd. | La Brisa Ranch 913 #3 | 5,550 | 42703602 |
| 614841 | Feb 24, 2006 | Feb 24, 2006 | Smith Production Inc. | Slick State 'B' #4 | 12,000 | 42733943 |
| 614738 | Feb 23, 2006 | Feb 23, 2006 | Newgulf Petroleum, LLC | Martinez, Alberto #1 | 8,500 | 42733942 |
| 614338 | Feb 23, 2006 | Feb 23, 2006 | Trap Rock Oil, Ltd. | La Brisa Ranch 913 #2 | 5,500 | 42703601 |
| 614638 | Feb 22, 2006 | Feb 22, 2006 | EOG Resources, Inc. | Guerra Mineral Trust #2 | 8,000 | 42733941 |
| 614436 | Feb 17, 2006 | Feb 17, 2006 | Houston Exploration Company, The | T.B. Slick Estate a 485 #204 | 8,200 | 42733706 |
| 614241 | Feb 15, 2006 | Feb 15, 2006 | Newgulf Petroleum, LLC | Margo #8 | 5,000 | 42733939 |
| 613891 | Feb 14, 2006 | Feb 14, 2006 | El Paso Production Oil & Gas Co. | USA #2015 | 13,500 | 42733937 |
| 613891Amendment | Feb 14, 2006 | Feb 14, 2006 | El Paso E & P Company, L. P. | USA #2015 | 13,500 | 42733937 |
| 613890 | Feb 14, 2006 | Feb 14, 2006 | El Paso Production Oil & Gas Co. | USA #1013 | 13,500 | 42733936 |
| 613890Amendment | Feb 14, 2006 | Feb 14, 2006 | El Paso E & P Company, L. P. | USA #1013 | 13,500 | 42733936 |
| 613993 | Feb 10, 2006 | Feb 10, 2006 | Houston Exploration Company, The | Slick, T. B. State HB 222 #203 | 7,100 | 42733730 |
| 613975 | Feb 10, 2006 | Feb 10, 2006 | Houston Exploration Company, The | T.B. Slick Estate B 528 #188 | 5,800 | 42732867 |
| 613892 | Feb 9, 2006 | Feb 9, 2006 | El Paso Production Oil & Gas Co. | Guerra-USA Gas Unit "D" #15 | 13,500 | 42733938 |
| 613892Amendment | Feb 9, 2006 | Feb 9, 2006 | El Paso E & P Company, L. P. | Guerra-USA Gas Unit "D" #15 | 13,500 | 42733938 |
| 613541 | Feb 3, 2006 | Feb 3, 2006 | Smith Production Inc. | Slick State "B" #3 | 12,000 | 42733933 |
| 613298 | Jan 31, 2006 | Jan 31, 2006 | EOG Resources, Inc. | Gonzalez, Ricardo #1 | 8,500 | 42733932 |
| 612926 | Jan 30, 2006 | Jan 30, 2006 | El Paso Production Oil & Gas Co. | Guerra-USA Gas Unit "D" #3 | 13,723 | 42732476 |
| 613195 | Jan 27, 2006 | Jan 27, 2006 | Kerr-McGee Oil & Gas Onshore LLC | Frost National Bank -B- #37 | 9,000 | 42733931 |
| 612808 | Jan 26, 2006 | Jan 26, 2006 | El Paso Production Oil & Gas Co. | Saga #3 | 12,000 | 42733929 |
| 612961 | Jan 25, 2006 | Jan 25, 2006 | Kerr-McGee Oil & Gas Onshore LLC | Chapotal Land Co -A- #29 | 10,500 | 42733930 |
| 612835 | Jan 23, 2006 | Jan 23, 2006 | Bommer Engineering Co. | Guerra, R. R. #2 | 5,300 | 42733926 |
| 612832 | Jan 23, 2006 | Jan 23, 2006 | Ascent Operating, LP | Brannan Heirs Gas Unit #6 | 10,500 | 42733927 |
| 612825 | Jan 23, 2006 | Jan 23, 2006 | Metano Energy, LP | La Brisa Ranch #1 | 7,000 | 42733928 |
| 612825Amendment | Jan 23, 2006 | Jan 23, 2006 | Metano Energy, LP | La Brisa Ranch #1 | 9,000 | 42733928 |
| 612743 | Jan 20, 2006 | Jan 20, 2006 | Smith Production Inc. | Slick State "B" #2 | 10,000 | 42733925 |
| 612483 | Jan 17, 2006 | Jan 17, 2006 | Shell Western E&P | Neblett, G. E. et al Gas Unit #8 | 10,100 | 42733924 |
| 612358 | Jan 13, 2006 | Jan 13, 2006 | Trap Rock Oil, Ltd. | La Brisa Ranch / State 542 #14 | 5,500 | 42732058 |
| 612148 | Jan 10, 2006 | Jan 10, 2006 | Samson Lone Star LP | Bentsen Tract I #7 | 10,000 | 42733923 |
| 611960 | Jan 6, 2006 | Jan 6, 2006 | Smith Production Inc. | Bloomberg, Samuel D. #47 | 12,000 | 42733922 |
| 611951 | Jan 6, 2006 | Jan 6, 2006 | Smith Production Inc. | Bloomberg, Samuel D. #48 | 12,000 | 42733921 |
| 611930 | Jan 5, 2006 | Jan 5, 2006 | Kerr-McGee Oil & Gas Onshore LLC | Frost National Bank -B- #38 | 8,400 | 42733920 |
| 611697 | Dec 29, 2005 | Dec 29, 2005 | EOG Resources, Inc. | Guerra Mineral Trust #1 | 8,100 | 42733919 |
| 611670 | Dec 28, 2005 | Dec 28, 2005 | Shell Western E&P | Bentsen Bros. "B" #8 | 10,019 | 42701343 |
| 611650 | Dec 28, 2005 | Dec 28, 2005 | Shell Western E&P | Bentsen Bros.-State #12 | 10,400 | 42733918 |
| 611650Amendment | Dec 28, 2005 | Dec 28, 2005 | Shell Western E&P | Bentsen Bros.-State #12 | 16,500 | 42733918 |
| 611650Amendment | Dec 28, 2005 | Dec 28, 2005 | Shell Western E&P | Bentsen Bros.-State #12 | 19,500 | 42733918 |
| 611333 | Dec 27, 2005 | Dec 27, 2005 | El Paso Production Oil & Gas Co. | Arriaga GU "F" #2 | 10,751 | 42732807 |
| 611416 | Dec 21, 2005 | Dec 21, 2005 | Smith Production Inc. | Slick State "B" #1 | 12,000 | 42733917 |
| 611416Amendment | Dec 21, 2005 | Dec 21, 2005 | Smith Production Inc. | Slick State "B" #1 | 12,000 | 42733917 |
| 611181 | Dec 20, 2005 | Dec 20, 2005 | El Paso Production Oil & Gas Co. | Saga #2 | 12,000 | 42733916 |
| 611219 | Dec 19, 2005 | Dec 19, 2005 | El Paso Production Oil & Gas Co. | Samano "H" #2 | 5,780 | 42732333 |
| 611053 | Dec 15, 2005 | Dec 15, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Slick Estate -C- #12 | 8,900 | 42733079 |
| 611024 | Dec 15, 2005 | Dec 15, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B.G. #61 | 8,500 | 42733915 |
| 610856 | Dec 12, 2005 | Dec 12, 2005 | El Paso Production Oil & Gas Co. | Luera State Gas Unit "A" #4 | 14,698 | 42733315 |
| 610264 | Dec 8, 2005 | Dec 8, 2005 | Noble Energy Inc | Heard #1 | 7,125 | 42733275 |
| 610264Amendment | Dec 8, 2005 | Dec 8, 2005 | Noble Energy Inc | Heard #1 | 7,125 | 42733275 |
| 610655 | Dec 7, 2005 | Dec 7, 2005 | Shell Western E&P | Emma Pena, et. Al. #1 | 11,715 | 42733914 |
| 610655Amendment | Dec 7, 2005 | Dec 7, 2005 | Shell Western E&P | Emma Pena, et. Al. #1 | 11,715 | 42733914 |
| 610640 | Dec 6, 2005 | Dec 6, 2005 | Samson Lone Star LP | Slick Estate #5399 | 3,350 | 42732404 |
| 610575 | Dec 6, 2005 | Dec 6, 2005 | El Paso Production Oil & Gas Co. | USA 1 #2 | 10,752 | 42732557 |
| 610490 | Dec 5, 2005 | Dec 5, 2005 | Total E&P USA, Inc. | Slick, T. B. Estate #168 | 12,000 | 42733913 |
| 610490Amendment | Dec 5, 2005 | Dec 5, 2005 | Shell Western E&P | Slick, T. B. Estate #168 | 13,500 | 42733913 |
| 610142 | Nov 29, 2005 | Nov 29, 2005 | EOG Resources, Inc. | McClure #2 | 8,500 | 42733911 |
| 610141 | Nov 29, 2005 | Nov 29, 2005 | EOG Resources, Inc. | Eia Properties #2 | 9,800 | 42733912 |
| 610001 | Nov 23, 2005 | Nov 23, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B. G. #59 | 8,000 | 42733910 |