| 551670Amendment | Sep 29, 2004 | Sep 29, 2004 | Westport Oil and Gas Company, LP | Miller Ranch #6 | 12,000 | 04732163 |
| 551547 | Sep 29, 2004 | Sep 29, 2004 | Mobil Producing TX. & N.M. Inc. | La Gloria Gas Unit #113 | 8,300 | 04731573 |
| 551437 | Sep 23, 2004 | Sep 23, 2004 | Newfield Exploration Company | La Rucia Ranch #22 | 13,500 | 04732161 |
| 551422 | Sep 23, 2004 | Sep 23, 2004 | Chevron U. S. A. Inc. | Lopez, G G #17 | 10,000 | 04732160 |
| 551274 | Sep 21, 2004 | Sep 21, 2004 | EOG Resources, Inc. | Amelia #1 | 9,000 | 04732159 |
| 551178 | Sep 17, 2004 | Sep 17, 2004 | Loudon Operating Company, L.L.C. | Lopez #1 | 11,070 | 04732020 |
| 550824 | Sep 10, 2004 | Sep 10, 2004 | Chevron U. S. A. Inc. | Lopez, G G #16 | 12,000 | 04732158 |
| 550393 | Sep 1, 2004 | Sep 1, 2004 | Brigham Oil & Gas, L.P. | Sullivan, D.J. C #30 | 14,500 | 04732157 |
| 550120 | Aug 27, 2004 | Aug 27, 2004 | Range Production Company | Garcia 1 #42 | 8,326 | 04731646 |
| 549582 | Aug 24, 2004 | Aug 24, 2004 | Exxon Mobil Corporation | Viboras Field Gas Unit No. 1 #V142 | 10,350 | 04731756 |
| 549673 | Aug 19, 2004 | Aug 19, 2004 | Chevron U. S. A. Inc. | Lopez, G.G. #15 | 9,500 | 04732156 |
| 549556 | Aug 17, 2004 | Aug 17, 2004 | Exxon Mobil Corporation | McGill Brothers #375D | 4,600 | 04701596 |
| 549008 | Aug 2, 2004 | Aug 2, 2004 | Texas Independent Explor Ltd. | Perez #1 | 7,289 | 04731614 |
| 548819 | Jul 29, 2004 | Jul 29, 2004 | Mobil Producing TX. & N.M. Inc. | South la Gloria Gas Unit #13 | 8,038 | 04700155 |
| 548821 | Jul 28, 2004 | Jul 28, 2004 | Westport Oil and Gas Company, LP | Miller Ranch #5 | 10,000 | 04732155 |
| 548753 | Jul 26, 2004 | Jul 26, 2004 | Newfield Exploration Company | La Rucia Ranch #21 | 13,500 | 04732154 |
| 548483 | Jul 20, 2004 | Jul 20, 2004 | Brigham Oil & Gas, L.P. | Sullivan, D J "E" #2 | 9,000 | 04732153 |
| 547722 | Jul 1, 2004 | Jul 1, 2004 | Hilcorp Energy Company | Lopez, Gloria Garcia #9 | 9,600 | 04732134 |
| 547492 | Jun 28, 2004 | Jun 28, 2004 | Exxon Mobil Corporation | Kleberg, R J Jr TR Barrosa Past #15 | 7,230 | 04730672 |
| 546996 | Jun 16, 2004 | Jun 16, 2004 | Westport Oil and Gas Company, LP | Rupp Deep "D" #2 | 12,000 | 04732151 |
| 546994 | Jun 16, 2004 | Jun 16, 2004 | Exxon Mobil Corporation | State Marshall #55 | 8,300 | 04732150 |
| 546941Amendment | Jun 15, 2004 | Jun 15, 2004 | Exxon Mobil Corporation | Kelsey Unit #S 47MD | 7,500 | 04731994 |
| 546127 | May 25, 2004 | May 25, 2004 | Newfield Exploration Company | La Rucia Ranch #20 | 13,500 | 04732149 |
| 545769 | May 17, 2004 | May 17, 2004 | Hilcorp Energy Company | Lopez, Gloria Garcia "B" #17 | 12,500 | 04732147 |
| 544165 | May 6, 2004 | May 6, 2004 | Exxon Mobil Corporation | Santa FE Ranch #113 | 16,000 | 04732141 |
| 545210 | May 3, 2004 | May 3, 2004 | Chevron U. S. A. Inc. | Lopez, G.G. #14 | 9,900 | 04732146 |
| 545203 | May 3, 2004 | May 3, 2004 | Mestena Operating, Ltd. | Mil Pesos #1 | 6,250 | 04732045 |
| 545061 | Apr 28, 2004 | Apr 28, 2004 | Brigham Oil & Gas, L.P. | Sullivan, D.J. F #2 | 14,800 | 04732145 |
| 545011 | Apr 27, 2004 | Apr 27, 2004 | Republic Resources, LLC, | Palmer #1 | 9,500 | 04732144 |
| 545011Amendment | Apr 27, 2004 | Apr 27, 2004 | Republic Resources, LLC, | Palmer #1 | 9,500 | 04732144 |
| 544948 | Apr 26, 2004 | Apr 26, 2004 | Loudon Operating Company, L.L.C. | Lopez #4A | 12,900 | 04732143 |
| 544543 | Apr 16, 2004 | Apr 16, 2004 | Chevron U. S. A. Inc. | Lopez, G.G. #13 | 10,500 | 04732142 |
| 544015 | Apr 5, 2004 | Apr 5, 2004 | Exxon Mobil Corporation | Santa FE Ranch "B" #202 | 8,000 | 04732140 |
| 543855 | Mar 30, 2004 | Mar 30, 2004 | Newfield Exploration Company | La Rucia Ranch #19 | 13,500 | 04732139 |
| 543848 | Mar 30, 2004 | Mar 30, 2004 | Mestena Operating, Ltd. | Mil Pesos #5 | 5,950 | 04732114 |
| 543724 | Mar 26, 2004 | Mar 26, 2004 | Chevron U. S. A. Inc. | Lopez, G.G. #11 | 10,500 | 04732138 |
| 543574 | Mar 23, 2004 | Mar 23, 2004 | Wadi Petroleum, Inc. | Dawson State #1 | 9,000 | 04732137 |
| 543133 | Mar 12, 2004 | Mar 12, 2004 | Exxon Mobil Corporation | State Marshall #53 | 8,150 | 04732136 |
| 543041 | Mar 10, 2004 | Mar 10, 2004 | Westport Oil and Gas Company, LP | Cage Ranch #21 | 11,500 | 04732135 |
| 542913 | Mar 8, 2004 | Mar 8, 2004 | Hilcorp Energy Company | Lopez, Gloria Garcia #9 | 10,500 | 04732134 |
| 542786 | Mar 3, 2004 | Mar 3, 2004 | Chevron U. S. A. Inc. | Lopez, G. G. #12 | 8,700 | 04732133 |
| 542592Amendment | Feb 27, 2004 | Feb 27, 2004 | Brigham Oil & Gas, L.P. | Palmer State 348 #9 | 13,200 | 04732132 |
| 542592Amendment | Feb 27, 2004 | Feb 27, 2004 | Brigham Oil & Gas, L.P. | Palmer State 348 #9 | 13,200 | 04732132 |
| 542564 | Feb 26, 2004 | Feb 26, 2004 | Loudon Operating Company, L.L.C. | Lopez #1 | 11,070 | 04732020 |
| 542532 | Feb 26, 2004 | Feb 26, 2004 | Westport Oil and Gas Company, LP | Cage Ranch #20 | 10,000 | 04732131 |
| 542265 | Feb 19, 2004 | Feb 19, 2004 | Loudon Operating Company, L.L.C. | Lopez #7 | 12,900 | 04732130 |
| 542265Amendment | Feb 19, 2004 | Feb 19, 2004 | Loudon Operating Company, L.L.C. | Lopez #7 | 11,820 | 04732130 |
| 537667 | Feb 17, 2004 | Feb 17, 2004 | Chevron U. S. A. Inc. | Lopez, G. G. #1 | 10,400 | 04700874 |
| 537667Amendment | Feb 17, 2004 | Feb 17, 2004 | Chevron U. S. A. Inc. | Lopez, G. G. #1 | 10,800 | 04700874 |
| 537667Amendment | Feb 17, 2004 | Feb 17, 2004 | Chevron U. S. A. Inc. | Lopez, G. G. #1 | 10,800 | 04700874 |
| 542043 | Feb 13, 2004 | Feb 13, 2004 | Gaither Petroleum Corporation | Bennett, Mills Estate Fee #69 | 5,000 | 04732129 |
| 542008 | Feb 13, 2004 | Feb 13, 2004 | Westport Oil and Gas Company, LP | Garcia-Benavides Gas Unit 2 #1 | 9,001 | 04731667 |
| 542008Amendment | Feb 13, 2004 | Feb 13, 2004 | Westport Oil and Gas Company, LP | Garcia-Benavides Gas Unit 2 #1 | 10,000 | 04731667 |
| 541947 | Feb 11, 2004 | Feb 11, 2004 | Newfield Exploration Company | La Rucia Ranch #18 | 12,000 | 04732128 |
| 541836 | Feb 9, 2004 | Feb 9, 2004 | Mestena Operating, Ltd. | Tres Puertas "Lucky" #13 | 11,000 | 04732127 |
| 541809 | Feb 9, 2004 | Feb 9, 2004 | Exxon Mobil Corporation | Sullivan, D. J. "F" #36 | 8,600 | 04732126 |
| 541809Amendment | Feb 9, 2004 | Feb 9, 2004 | Exxon Mobil Corporation | Sullivan, D. J. "F" #36 | 9,500 | 04732126 |
| 541675 | Feb 4, 2004 | Feb 4, 2004 | Hilcorp Energy Company | Lopez, Gloria Garcia "B" #16 | 11,500 | 04732125 |
| 541675Amendment | Feb 4, 2004 | Feb 4, 2004 | Hilcorp Energy Company | Lopez, Gloria Garcia "B" #16 | 13,000 | 04732125 |
| 541353 | Jan 29, 2004 | Jan 29, 2004 | Exxon Mobil Corporation | Santa FE Ranch #127 | 16,500 | 04732124 |
| 541183 | Jan 26, 2004 | Jan 26, 2004 | Mestena Operating, Ltd. | Trap #1 | 7,000 | 04732050 |
| 541165 | Jan 23, 2004 | Jan 23, 2004 | Exxon Mobil Corporation | Sullivan, D J State #12 | 15,000 | 04732123 |
| 541119 | Jan 23, 2004 | Jan 23, 2004 | Westport Oil and Gas Company, LP | Cage Ranch #19 | 10,000 | 04732122 |
| 540950 | Jan 20, 2004 | Jan 20, 2004 | Newfield Exploration Company | La Rucia Ranch #17 | 12,000 | 04732121 |
| 540939 | Jan 20, 2004 | Jan 20, 2004 | Loudon Exploration, Inc. | Lopez #4 | 12,900 | 04732088 |
| 540777 | Jan 15, 2004 | Jan 15, 2004 | Westport Oil and Gas Company, LP | Noll, Marvin R. #5 | 10,300 | 04732077 |
| 540715 | Jan 13, 2004 | Jan 13, 2004 | Loudon Exploration, Inc. | McGill Bros. NCT-1 #90 | 8,735 | 04732069 |
| 540236 | Dec 30, 2003 | Dec 30, 2003 | Brigham Oil & Gas, L.P. | Sullivan, D.J. E #1 | 15,500 | 04732120 |
| 539115 | Dec 30, 2003 | Dec 30, 2003 | Exxon Mobil Corporation | McGill Brothers #568 | 12,200 | 04732119 |
| 539057 | Nov 26, 2003 | Nov 26, 2003 | Exxon Mobil Corporation | Santa FE Ranch #122 | 16,500 | 04732118 |
| 539050 | Nov 25, 2003 | Nov 25, 2003 | Hilcorp Energy Company | Marcelo Deluna Gas Unit #2 | 12,000 | 04732117 |
| 538551 | Nov 13, 2003 | Nov 13, 2003 | Mestena Operating, Ltd. | Tres Puertas #12 | 11,000 | 04732116 |
| 538458 | Nov 13, 2003 | Nov 13, 2003 | Exxon Mobil Corporation | Santa FE Ranch "B" #200 | 9,400 | 04732115 |
| 538402 | Nov 10, 2003 | Nov 10, 2003 | Mestena Operating, Ltd. | Mil Pesos #5 | 9,000 | 04732114 |
| 538400 | Nov 10, 2003 | Nov 10, 2003 | Brigham Oil & Gas, L.P. | Sullivan, D.J. F #1 | 14,500 | 04732113 |
| 538296 | Nov 6, 2003 | Nov 6, 2003 | Mestena Operating, Ltd. | Gonzalena #2 | 9,000 | 04732112 |
| 538244 | Nov 5, 2003 | Nov 5, 2003 | Mestena Operating, Ltd. | Tres Puertas "C" #11 | 2,000 | 04732111 |
| 538145 | Nov 3, 2003 | Nov 3, 2003 | Chevron U. S. A. Inc. | Lopez, G. G. #10 | 10,500 | 04732110 |
| 538076 | Oct 30, 2003 | Oct 30, 2003 | Hilcorp Energy Company | Lopez, Gloria Garcia #10 | 11,000 | 04732109 |
| 534577 | Oct 30, 2003 | Oct 30, 2003 | Brigham Oil & Gas, L.P. | Palmer State 348 #8 | 13,200 | 04732094 |
| 537930 | Oct 27, 2003 | Oct 27, 2003 | Hilcorp Energy Company | Lopez, Gloria Garcia "B" #15 | 12,000 | 04732108 |
| 537930Amendment | Oct 27, 2003 | Oct 27, 2003 | Hilcorp Energy Company | Lopez, Gloria Garcia "B" #15 | 12,000 | 04732108 |
| 537927 | Oct 27, 2003 | Oct 27, 2003 | Newfield Exploration Company | La Rucia Ranch #16 | 12,000 | 04732107 |
| 537772 | Oct 23, 2003 | Oct 23, 2003 | Exxon Mobil Corporation | Kleberg, R J Jr. Tr. Los Muertos #43 | 8,600 | 04731403 |
| 537771 | Oct 22, 2003 | Oct 22, 2003 | Exxon Mobil Corporation | Kleberg, R J Jr. Tr. Los Muertos #41 | 8,200 | 04731374 |
| 537542 | Oct 15, 2003 | Oct 15, 2003 | Mestena Operating, Ltd. | Poso #2 | 9,000 | 04732106 |
| 537418 | Oct 14, 2003 | Oct 14, 2003 | Exxon Mobil Corporation | Sullivan, D J State #10 | 15,500 | 04732105 |
| 537242 | Oct 7, 2003 | Oct 7, 2003 | Chevron U. S. A. Inc. | Lopez, G. G. #1 | 10,400 | 04700874 |
| 537105 | Oct 3, 2003 | Oct 3, 2003 | Mestena Operating, Ltd. | Gonzalena #1 | 9,000 | 04732104 |
| 537036 | Oct 2, 2003 | Oct 2, 2003 | Exxon Mobil Corporation | Kleberg, R J Jr TR Barrosa Past. #17 | 6,150 | 04730688 |
| 537009 | Oct 1, 2003 | Oct 1, 2003 | Exxon Mobil Corporation | Kleberg, R J Jr TR Barrosa Past. #4 | 7,100 | 04730231 |
| 536956 | Sep 30, 2003 | Sep 30, 2003 | United Resources, LP | Cage Ranch II #7102A | 8,500 | 04731762 |
| 536809 | Sep 25, 2003 | Sep 25, 2003 | Chevron U. S. A. Inc. | Mc Gills Bros. NCT-1 #103 | 10,400 | 04732103 |
| 536789 | Sep 24, 2003 | Sep 24, 2003 | Loudon Exploration, Inc. | Lopez #5 | 12,000 | 04732102 |
| 536741 | Sep 24, 2003 | Sep 24, 2003 | United Resources, LP | Cage Ranch #14 | 9,000 | 04732014 |
| 536213 | Sep 19, 2003 | Sep 19, 2003 | Exxon Mobil Corporation | Kelsey Unit #M559D | 5,300 | 04731910 |
| 534577Amendment | Sep 15, 2003 | Sep 15, 2003 | Brigham Oil & Gas, L.P. | Palmer State 348 #8 | 13,200 | 04732094 |
| 536081 | Sep 4, 2003 | Sep 4, 2003 | Hilcorp Energy Company | Lopez, Gloria Garcia #1 | 9,250 | 04730749 |
| 535877 | Sep 3, 2003 | Sep 3, 2003 | Hilcorp Energy Company | Lopez, Gloria Garcia #1R | 10,500 | 04732099 |
| 535932 | Aug 29, 2003 | Aug 29, 2003 | Hilcorp Energy Company | Lopez SWD #1 | 6,200 | 04732101 |