| 602029 | Jun 14, 2005 | Jun 14, 2005 | Total E&P USA, Inc. | Slick, T.B. Estate #160 | 12,000 | 42733848 |
| 601923 | Jun 10, 2005 | Jun 10, 2005 | Total E&P USA, Inc. | Slick, T. B. Estate #161 | 12,000 | 42733847 |
| 601793 | Jun 8, 2005 | Jun 8, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Yturria L & L -B- #7 | 6,570 | 42733541 |
| 601723 | Jun 7, 2005 | Jun 7, 2005 | Cimarron Engineering Corp. | LMB-State #2 | 4,600 | 42733846 |
| 601721 | Jun 7, 2005 | Jun 7, 2005 | Cimarron Engineering Corp. | LMB-State #1 | 4,600 | 42733845 |
| 601710 | Jun 7, 2005 | Jun 7, 2005 | Reserve Operating Corp. | De Garza, J. M. #13 | 6,600 | 42732062 |
| 601688 | Jun 7, 2005 | Jun 7, 2005 | Opex Energy, LLC | Flores Unit #2 | 5,812 | 42732073 |
| 561258 | Jun 7, 2005 | Jun 7, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B. G. #50 | 8,000 | 42733831 |
| 601485 | Jun 2, 2005 | Jun 2, 2005 | Smith Production Inc. | Bloomberg, Samuel D. #40 | 13,500 | 42733844 |
| 601192 | May 25, 2005 | May 25, 2005 | EOG Resources, Inc. | Las Escobas #5 | 9,500 | 42733843 |
| 601089 | May 24, 2005 | May 24, 2005 | Metano Energy, LP | Flores Gas Unit #1 | 12,000 | 42733842 |
| 601089Amendment | May 24, 2005 | May 24, 2005 | Metano Energy, LP | Flores Gas Unit #1 | 12,200 | 42733842 |
| 600802 | May 18, 2005 | May 18, 2005 | Exxon Mobil Corporation | McGill Bros. #572 | 13,000 | 42733841 |
| 600697 | May 17, 2005 | May 17, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B. G. #53 | 8,000 | 42733840 |
| 600548 | May 11, 2005 | May 11, 2005 | Kerr-McGee Oil & Gas Onshore LLC | De Garcia, B.G. #52 | 8,000 | 42733839 |
| 600116 | May 11, 2005 | May 11, 2005 | Kerr-McGee Oil & Gas Onshore LLC | A.G. Hermann Gas Unit #10 | 8,500 | 42733834 |
| 600460 | May 10, 2005 | May 10, 2005 | Double Play Oil & Gas, Inc | Villarreal #2 | 3,600 | 42733837 |
| 600328 | May 10, 2005 | May 10, 2005 | Opex Energy, LLC | McLean, Marrs #20 | 4,653 | 42705092 |
| 600404 | May 9, 2005 | May 9, 2005 | Shell Western E&P | La Copita Gas Unit #5 | 10,700 | 42733836 |
| 600404Amendment | May 9, 2005 | May 9, 2005 | Shell Western E&P | La Copita Gas Unit #5 | 10,700 | 42733836 |
| 600291 | May 9, 2005 | May 9, 2005 | Noble Energy Inc | Martinez B #33U | 7,650 | 42704718 |
| 600285 | May 6, 2005 | May 6, 2005 | Opex Energy, LLC | McLean, Marrs #29 | 4,510 | 42733152 |
| 600280 | May 5, 2005 | May 5, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Frost National Bank -B- #36 | 9,000 | 42733835 |
| 561289 | Apr 29, 2005 | Apr 29, 2005 | Mortimer Production Company | Wright Fee #2 | 2,500 | 42733833 |
| 561288 | Apr 29, 2005 | Apr 29, 2005 | Mortimer Production Company | Wright #1 | 2,500 | 42733832 |
| 561288Amendment | Apr 29, 2005 | Apr 29, 2005 | Mortimer Production Company | Wright #1 | 2,500 | 42733832 |
| 560735 | Apr 26, 2005 | Apr 26, 2005 | El Paso Production Oil & Gas Co. | Guerra Gas Unit "A" #8 | 11,195 | 42732590 |
| 560735Amendment | Apr 26, 2005 | Apr 26, 2005 | El Paso Production Oil & Gas Co. | Guerra GU "A" #8 | 11,195 | 42732590 |
| 560890 | Apr 21, 2005 | Apr 21, 2005 | Samson Lone Star LP | Coates 553 #8 | 5,250 | 42733663 |
| 560565 | Apr 20, 2005 | Apr 20, 2005 | El Paso Production Oil & Gas Co. | Guerra-USA Gas Unit "A" #10 | 12,550 | 42732647 |
| 560330 | Apr 14, 2005 | Apr 14, 2005 | Noble Energy Inc | Martinez "B" #42 | 6,000 | 42732818 |
| 560415 | Apr 13, 2005 | Apr 13, 2005 | EOG Resources, Inc. | Cooper Foundation #1 | 10,000 | 42733829 |
| 560358 | Apr 12, 2005 | Apr 12, 2005 | Total E&P USA, Inc. | Slick, T.B. Estate #157 | 13,000 | 42733828 |
| 560340 | Apr 12, 2005 | Apr 12, 2005 | Newfield Exploration Company | Guerra "D" #5 | 12,000 | 42733827 |
| 559505 | Mar 24, 2005 | Mar 24, 2005 | Whittier Operating Inc. | Cameron 137 #3 | 9,500 | 42733825 |
| 559346 | Mar 22, 2005 | Mar 22, 2005 | EOG Resources, Inc. | Southwest Texas Corp #4 | 10,200 | 42733824 |
| 559175 | Mar 17, 2005 | Mar 17, 2005 | Total E&P USA, Inc. | Slick, T. B. Estate #145 | 12,000 | 42733823 |
| 559167 | Mar 17, 2005 | Mar 17, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Laurel, D. #17 | 8,600 | 42733822 |
| 558894 | Mar 11, 2005 | Mar 11, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Montalvo, N. R. #15 | 6,144 | 42733402 |
| 558891 | Mar 11, 2005 | Mar 11, 2005 | Kebo Oil & Gas, Inc. | Escobares #1 | 2,000 | 42733821 |
| 558805 | Mar 10, 2005 | Mar 10, 2005 | Opex Energy, LLC | Rodriguez #1 | 6,000 | 42733820 |
| 558778 | Mar 9, 2005 | Mar 9, 2005 | Kebo Oil & Gas, Inc. | Pistol Hill #1 | 2,000 | 42733819 |
| 558778Amendment | Mar 9, 2005 | Mar 9, 2005 | Kebo Oil & Gas, Inc. | Pistol Hill #1 | 2,000 | 42733819 |
| 558378 | Mar 9, 2005 | Mar 9, 2005 | Kerr-McGee Oil & Gas Onshore LLC | A. G. Hermann Gas Unit #9 | 8,000 | 42733817 |
| 558380 | Mar 1, 2005 | Mar 1, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Slick, T.B. Est. A-265 #211 | 7,500 | 42733818 |
| 558375 | Mar 1, 2005 | Mar 1, 2005 | EOG Resources, Inc. | Las Escobas #3 | 9,500 | 42733816 |
| 558234 | Feb 25, 2005 | Feb 25, 2005 | Bommer Engineering Co. | Garza Heirs #1 | 5,300 | 42733815 |
| 556674 | Feb 23, 2005 | Feb 23, 2005 | Noble Energy Inc | Martinez, B #57 | 8,100 | 42733810 |
| 558033 | Feb 22, 2005 | Feb 22, 2005 | Peoples Energy Prod.-TX, L.P. | Guerra Bros. #15 | 11,000 | 42733814 |
| 557633 | Feb 14, 2005 | Feb 14, 2005 | Mortimer Production Company | Wood/Wardner #2 | 7,000 | 42733813 |
| 557040 | Jan 31, 2005 | Jan 31, 2005 | Peoples Energy Prod.-TX, L.P. | Villareal #19 | 11,900 | 42733812 |
| 556559 | Jan 28, 2005 | Jan 28, 2005 | El Paso Production Oil & Gas Co. | Samano "H" #3 | 8,048 | 42732349 |
| 556811 | Jan 26, 2005 | Jan 26, 2005 | EOG Resources, Inc. | Southwest Texas Corp. #3 | 11,000 | 42733811 |
| 556811Amendment | Jan 26, 2005 | Jan 26, 2005 | EOG Resources, Inc. | Southwest Texas Corp. #3 | 11,000 | 42733811 |
| 556612 | Jan 26, 2005 | Jan 26, 2005 | El Paso Production Oil & Gas Co. | Samano #22 | 15,000 | 42733375 |
| 556645 | Jan 24, 2005 | Jan 24, 2005 | Total E&P USA, Inc. | Slick, T B Estate #144 | 13,000 | 42733809 |
| 556586 | Jan 21, 2005 | Jan 21, 2005 | Omega Energy Corp. | Villareal #1 | 3,600 | 42733808 |
| 556586Amendment | Jan 21, 2005 | Jan 21, 2005 | Double Play Oil & Gas, Inc | Villareal #1 | 3,600 | 42733808 |
| 556329 | Jan 18, 2005 | Jan 18, 2005 | Smith Production Inc. | Bloomberg, Samuel D. #39 | 8,900 | 42733807 |
| 556152 | Jan 13, 2005 | Jan 13, 2005 | Ascent Operating, LP | Garza-Hitchcock et al G. U. #7 | 10,500 | 42733806 |
| 556036 | Jan 11, 2005 | Jan 11, 2005 | EOG Resources, Inc. | Southwest Texas Corp. #1 A | 10,000 | 42733804 |
| 555853 | Jan 11, 2005 | Jan 11, 2005 | Metano Energy, LP | Texaco Fee Guerra C #1 | 5,114 | 42732980 |
| 555939 | Jan 10, 2005 | Jan 10, 2005 | Touchstone Resources USA, Inc. | Diaz #6 | 6,000 | 42733803 |
| 555939Amendment | Jan 10, 2005 | Jan 10, 2005 | Alamo Operating Company, L. C. | Diaz #6 | 6,000 | 42733803 |
| 555805 | Jan 6, 2005 | Jan 6, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Slick, T.B. State HB-222 #205 | 7,100 | 42733800 |
| 555803 | Jan 6, 2005 | Jan 6, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Semmes Trust 906 #10 | 7,000 | 42733799 |
| 555803Amendment | Jan 6, 2005 | Jan 6, 2005 | Kerr-McGee Oil & Gas Onshore LLC | Semmes Trust 906 #10 | 7,000 | 42733799 |
| 555780 | Jan 6, 2005 | Jan 6, 2005 | Wynn-Crosby Energy, Inc. | Guerra, F. B. "F" #2 | 7,504 | 42705040 |
| 555723 | Jan 5, 2005 | Jan 5, 2005 | Newgulf Petroleum, LLC | Margo #7 | 7,500 | 42733798 |
| 555715 | Jan 5, 2005 | Jan 5, 2005 | Smith Production Inc. | Bloomberg, Samuel D #37 | 12,000 | 42733797 |
| 555700 | Jan 5, 2005 | Jan 5, 2005 | Touchstone Resources USA, Inc. | Garcia #3 | 9,500 | 42733796 |
| 555595 | Jan 3, 2005 | Jan 3, 2005 | Smith Production Inc. | Bloomberg, Samuel D #38 | 8,900 | 42733795 |
| 555572 | Dec 31, 2004 | Dec 31, 2004 | Newgulf Petroleum, LLC | Gonzales #3 | 5,000 | 42733794 |
| 555264 | Dec 22, 2004 | Dec 22, 2004 | Touchstone Resources USA, Inc. | Diaz #5 | 6,500 | 42733793 |
| 555021 | Dec 17, 2004 | Dec 17, 2004 | Samson Lone Star LP | La Brisa Ranch #1 | 9,000 | 42733792 |
| 554950 | Dec 16, 2004 | Dec 16, 2004 | Metano Energy, LP | Starr Produce Co. #1 | 9,000 | 42733791 |
| 554950Amendment | Dec 16, 2004 | Dec 16, 2004 | Metano Energy, LP | Starr Produce Co. #1 | 8,810 | 42733791 |
| 554832 | Dec 14, 2004 | Dec 14, 2004 | Total E&P USA, Inc. | Slick, T. B. Estate #159 | 13,500 | 42733790 |
| 554827 | Dec 14, 2004 | Dec 14, 2004 | Kerr-McGee Oil & Gas Onshore LLC | Slick State H-536 Unit #1 | 8,000 | 42733789 |
| 554827Amendment | Dec 14, 2004 | Dec 14, 2004 | Kerr-McGee Oil & Gas Onshore LLC | Slick State H-536 Unit #1 | 8,000 | 42733789 |
| 554671 | Dec 10, 2004 | Dec 10, 2004 | Ascent Energy, Inc | Don Cameron et al State #2B | 7,150 | 42733788 |
| 554666 | Dec 10, 2004 | Dec 10, 2004 | Wynn-Crosby Energy, Inc. | Cleopatra #4 | 11,000 | 42733787 |
| 554666Amendment | Dec 10, 2004 | Dec 10, 2004 | Petrohawk Operating Company | Cleopatra #4 | 10,500 | 42733787 |
| 553557 | Dec 9, 2004 | Dec 9, 2004 | Kerr-McGee Oil & Gas Onshore LLC | Yturria L & L Co. -B- #9 | 8,000 | 42733778 |
| 554499 | Dec 7, 2004 | Dec 7, 2004 | Ascent Energy, Inc | Don Cameron et al G.U. #10 | 9,500 | 42733786 |
| 554415 | Dec 6, 2004 | Dec 6, 2004 | EOG Resources, Inc. | Southwest Texas Corp #2 | 10,000 | 42733785 |
| 554277 | Dec 6, 2004 | Dec 6, 2004 | El Paso Production Oil & Gas Co. | De Flores, M. S. #4 | 9,000 | 42733783 |
| 554368 | Dec 3, 2004 | Dec 3, 2004 | EOG Resources, Inc. | Las Escobas #2 | 9,750 | 42733784 |
| 554364 | Dec 3, 2004 | Dec 3, 2004 | Wynn-Crosby Energy, Inc. | Guerra, F. B. Estate -B- #9D | 8,015 | 42732260 |
| 554203 | Nov 30, 2004 | Nov 30, 2004 | Ricochet Energy, Inc. | Escobar, E. Gas Unit No. 1 #1 | 8,200 | 42731501 |
| 554194 | Nov 30, 2004 | Nov 30, 2004 | Shell Western E&P | Judd Estate-State #13 | 10,800 | 42733782 |
| 554187 | Nov 30, 2004 | Nov 30, 2004 | Touchstone Resources USA, Inc. | Yturria-Greehey #1 | 6,500 | 42733781 |
| 553711 | Nov 29, 2004 | Nov 29, 2004 | El Paso Production Oil & Gas Co. | Guerra GU "A" #15 | 13,050 | 42732694 |
| 553967 | Nov 22, 2004 | Nov 22, 2004 | Newfield Exploration Company | Guerra "D" #4 | 12,000 | 42733780 |
| 553878 | Nov 19, 2004 | Nov 19, 2004 | Touchstone Resources USA, Inc. | Garcia #2 | 9,000 | 42733779 |
| 553713 | Nov 18, 2004 | Nov 18, 2004 | El Paso Production Oil & Gas Co. | Guerra GU "C" #15 | 15,100 | 42733122 |
| 553630 | Nov 15, 2004 | Nov 15, 2004 | Comstock Oil & Gas, LP | Lopez Gas Unit 1 #1 | 7,700 | 42733608 |
| 553488 | Nov 9, 2004 | Nov 9, 2004 | Newgulf Petroleum, LLC | Gonzales #1 | 4,275 | 42733458 |
| 553487 | Nov 9, 2004 | Nov 9, 2004 | Newgulf Petroleum, LLC | 3 M #1 | 5,200 | 42733265 |
| 553275 | Nov 5, 2004 | Nov 5, 2004 | Kerr-McGee Oil & Gas Onshore LLC | A. G. Hermann Gas Unit #8 | 8,000 | 42733777 |