| 384585 | Feb 12, 1991 | Feb 12, 1991 | Null, W. M.-Oil Producer | Booth, W. V. Jr. #1A | 10,100 | 47935179 |
| 384585Amendment | Feb 12, 1991 | Feb 12, 1991 | Null, W. M.-Oil Producer | Booth, W. V. Jr. #1A | 10,100 | 47935179 |
| 384584 | Feb 12, 1991 | Feb 12, 1991 | Transamerican Natural Gas Corp. | Hirsh "A" #2 | 8,300 | 47935178 |
| 384584Amendment | Feb 12, 1991 | Feb 12, 1991 | Transamerican Natural Gas Corp. | Hirsh "A" #2 | 8,300 | 47935178 |
| 384427 | Feb 12, 1991 | Feb 12, 1991 | Enron Oil & Gas Company | Hubberd Estate B #2 | 11,300 | 47935175 |
| 384427Amendment | Feb 12, 1991 | Feb 12, 1991 | Enron Oil & Gas Company | Hubberd Estate B #2 | 11,300 | 47935175 |
| 383675 | Feb 12, 1991 | Feb 12, 1991 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #39 | 8,750 | 47935153 |
| 383675Amendment | Feb 12, 1991 | Feb 12, 1991 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #39 | 8,750 | 47935153 |
| 383852 | Feb 11, 1991 | Feb 11, 1991 | Killam Oil Company | K & H Fee "2119" #2 | 8,000 | 47935162 |
| 384388 | Feb 7, 1991 | Feb 7, 1991 | Enron Oil & Gas Company | Vaquillas Ranch 136 A #2 | 10,100 | 47935171 |
| 383829 | Feb 7, 1991 | Feb 7, 1991 | Lewis Petro Properties, Inc. | Garner, J. N. #8 | 7,150 | 47935160 |
| 384336 | Feb 6, 1991 | Feb 6, 1991 | Enron Oil & Gas Company | Martin, J. C. III #1 | 10,300 | 47935170 |
| 384335 | Feb 6, 1991 | Feb 6, 1991 | Enron Oil & Gas Company | Vaquillas Ranch 1631 #3 | 10,500 | 47935169 |
| 384296 | Feb 5, 1991 | Feb 5, 1991 | Conoco Inc. | Benavides, Rosa V B3 #39 | 9,600 | 47935168 |
| 384247 | Feb 5, 1991 | Feb 5, 1991 | Southern Resource Company | Briscoe, Dolph #2 | 6,400 | 47935166 |
| 384207 | Feb 5, 1991 | Feb 5, 1991 | Columbus Energy Corp. | Prevost #3 | 7,300 | 47935167 |
| 383936 | Feb 5, 1991 | Feb 5, 1991 | Texas, L. Petroleum, Inc. | Gonzales, Ruben #6 | 14,100 | 47935161 |
| 384228 | Feb 4, 1991 | Feb 4, 1991 | Enron Oil & Gas Company | Hirsch Estate 1770 #1 | 9,300 | 47935165 |
| 384228Amendment | Feb 4, 1991 | Feb 4, 1991 | Enron Oil & Gas Company | Hirsch Estate 1770 #1 | 8,500 | 47935165 |
| 384200 | Feb 4, 1991 | Feb 4, 1991 | Texas, L. Petroleum, Inc. | Ruben Gonzalez Gas Unit #2 | 16,000 | 47934414 |
| 384013 | Feb 1, 1991 | Feb 1, 1991 | Chevron U. S. A. Inc. | Bruni Mineral Trust 'A' #26 | 11,500 | 47935164 |
| 384013Amendment | Feb 1, 1991 | Feb 1, 1991 | Chevron U. S. A. Inc. | Bruni Mineral Trust 'A' #26 | 11,500 | 47935164 |
| 383983 | Jan 30, 1991 | Jan 30, 1991 | Transamerican Natural Gas Corp. | Martinez, D. et Al #7 | 8,500 | 47935163 |
| 383747 | Jan 30, 1991 | Jan 30, 1991 | Chevron U. S. A. Inc. | Bruni Mineral Trust "A" #25 | 11,500 | 47935155 |
| 383747Amendment | Jan 30, 1991 | Jan 30, 1991 | Chevron U. S. A. Inc. | Bruni Mineral Trust "A" #25 | 10,665 | 47935155 |
| 383843 | Jan 24, 1991 | Jan 24, 1991 | Michael Petroleum Corporation | McKendrick #8 | 9,500 | 47935159 |
| 383815 | Jan 23, 1991 | Jan 23, 1991 | Chevron U. S. A. Inc. | Bruni Mineral Trust "A" #27 | 11,800 | 47935158 |
| 383812 | Jan 23, 1991 | Jan 23, 1991 | Enron Oil & Gas Company | Culpepper #1 | 9,600 | 47935157 |
| 383743 | Jan 23, 1991 | Jan 23, 1991 | Columbus Energy Corp. | Benavides TR 2 #6 | 7,000 | 47935156 |
| 383751 | Jan 22, 1991 | Jan 22, 1991 | Tri-C Resources, Inc. | Santa FE Killam Marrs McLean TR #1 | 11,300 | 47934916 |
| 383698 | Jan 21, 1991 | Jan 21, 1991 | Lobo Resources, Ltd. | Callaghan Ranch, Ltd. - State #1 | 8,000 | 47935154 |
| 383391 | Jan 18, 1991 | Jan 18, 1991 | Enron Oil & Gas Company | Bruni Mineral B #12 | 11,350 | 47935149 |
| 383517 | Jan 16, 1991 | Jan 16, 1991 | Transamerican Natural Gas Corp. | Hereford #36 | 8,300 | 47935150 |
| 383515 | Jan 16, 1991 | Jan 16, 1991 | Transamerican Natural Gas Corp. | Frost National Bank #40 | 11,200 | 47935151 |
| 383512 | Jan 16, 1991 | Jan 16, 1991 | Transamerican Natural Gas Corp. | Lechenger #13 | 9,000 | 47935152 |
| 383190 | Jan 16, 1991 | Jan 16, 1991 | Killam Oil Company | De Benavides, Rosa V. #8 | 2,400 | 47932156 |
| 383176 | Jan 15, 1991 | Jan 15, 1991 | American Exploration Company | Webb Co. School Land #A 2 | 7,000 | 47930431 |
| 383220 | Jan 11, 1991 | Jan 11, 1991 | West Petroleum Corp. | Adami, Alice & Garcia, Helen A. #1 | 1,950 | 47935148 |
| 383180 | Jan 9, 1991 | Jan 9, 1991 | Southern Star Petroleum, Inc. | Kirkpatrick, O. G. #1 | 3,100 | 47935147 |
| 382716 | Jan 7, 1991 | Jan 7, 1991 | Texaco Inc. | Bruni, A. M., Fee #12 | 3,008 | 47930628 |
| 383009 | Jan 4, 1991 | Jan 4, 1991 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #37 | 8,800 | 47935145 |
| 383009Amendment | Jan 4, 1991 | Jan 4, 1991 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #37 | 8,800 | 47935145 |
| 382886 | Jan 4, 1991 | Jan 4, 1991 | Conoco Inc. | Vaquillas Ranch A3 #79 | 10,300 | 47935142 |
| 382785 | Jan 4, 1991 | Jan 4, 1991 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #38 | 8,800 | 47935141 |
| 382725 | Jan 4, 1991 | Jan 4, 1991 | Herschap Bros. | Two Republics #7 | 900 | 47935140 |
| 381866 | Jan 4, 1991 | Jan 4, 1991 | Enron Oil & Gas Company | Bruni Mineral A #5 | 9,300 | 47932906 |
| 383017 | Jan 3, 1991 | Jan 3, 1991 | Transamerican Natural Gas Corp. | Villarreal "F" #3 | 12,300 | 47935146 |
| 382975 | Jan 2, 1991 | Jan 2, 1991 | Sanchez-O'Brien Oil & Gas Corp. | Hereford, L. M. "A" #42 | 9,500 | 47935144 |
| 382975Amendment | Jan 2, 1991 | Jan 2, 1991 | Sanchez-O'Brien Oil & Gas Corp. | Hereford, L. M. "A" #42 | 9,500 | 47935144 |
| 382885 | Dec 31, 1990 | Dec 31, 1990 | Conoco Inc. | Vaquillas Ranch J #77 | 12,200 | 47935143 |
| 382771 | Dec 28, 1990 | Dec 28, 1990 | TDC Engineering, Inc. | Moglia 672 #1 | 12,000 | 47935138 |
| 382761 | Dec 28, 1990 | Dec 28, 1990 | Castle Gas Corporation | De Los Santos #1 | 5,800 | 47935139 |
| 382761Amendment | Dec 28, 1990 | Dec 28, 1990 | Castle Gas Corporation | De Los Santos #1 | 5,800 | 47935139 |
| 382761Amendment | Dec 28, 1990 | Dec 28, 1990 | Castle Gas Corporation | De Los Santos #1 | 5,810 | 47935139 |
| 382705 | Dec 27, 1990 | Dec 27, 1990 | Chevron U. S. A. Inc. | Armengol, R. Valls #5 | 8,600 | 47935137 |
| 382705Amendment | Dec 27, 1990 | Dec 27, 1990 | Chevron U. S. A. Inc. | Armengol, R. Valls #5 | 8,000 | 47935137 |
| 382367 | Dec 20, 1990 | Dec 20, 1990 | Enron Oil & Gas Company | Bruni Mineral B #2 | 9,800 | 47933202 |
| 382516 | Dec 19, 1990 | Dec 19, 1990 | Transamerican Natural Gas Corp. | Schwarz #11 | 10,700 | 47935136 |
| 382139 | Dec 19, 1990 | Dec 19, 1990 | Enron Oil & Gas Company | Hirsch Estate 240 #1 | 9,100 | 47933697 |
| 382139Amendment | Dec 19, 1990 | Dec 19, 1990 | Enron Oil & Gas Company | Hirsch Estate 240 #1 | 9,100 | 47933697 |
| 382218 | Dec 17, 1990 | Dec 17, 1990 | Texas, L. Petroleum, Inc. | Gonzales, Ruben #1 | 13,399 | 47934366 |
| 382408 | Dec 14, 1990 | Dec 14, 1990 | Sanchez-O'Brien Oil & Gas Corp. | Casso Ltd #3 | 9,500 | 47935135 |
| 382408Amendment | Dec 14, 1990 | Dec 14, 1990 | Sanchez-O'Brien Oil & Gas Corp. | Casso Ltd #3 | 9,500 | 47935135 |
| 382400 | Dec 14, 1990 | Dec 14, 1990 | Transamerican Natural Gas Corp. | Frost, P. M. "F" #1 | 11,600 | 47935134 |
| 382154 | Dec 13, 1990 | Dec 13, 1990 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #30 | 9,275 | 47935133 |
| 381897 | Dec 11, 1990 | Dec 11, 1990 | Conoco Inc. | Vaquillas Ranch A-4 #14 | 12,148 | 47933142 |
| 382196 | Dec 10, 1990 | Dec 10, 1990 | Enron Oil & Gas Company | Roscher-Hirsch Gas Unit #1 | 9,600 | 47935132 |
| 382125 | Dec 10, 1990 | Dec 10, 1990 | Transamerican Natural Gas Corp. | Rottersman #6 | 11,000 | 47935131 |
| 382077 | Dec 7, 1990 | Dec 7, 1990 | Michael Petr. & Hurd Ent., Ltd. | Briscoe Ranch, Inc. #2 | 10,000 | 47935130 |
| 381628 | Nov 30, 1990 | Nov 30, 1990 | Delray Oil, Inc. | Benavides, Rosa #1 | 6,000 | 47935129 |
| 381384 | Nov 21, 1990 | Nov 21, 1990 | Michael Petroleum Corporation | Martin, Sophie J. "B" #4 | 9,800 | 47935128 |
| 381138 | Nov 20, 1990 | Nov 20, 1990 | Mobil Producing TX. & N.M. Inc. | South Callaghan Ranch #36 | 8,300 | 47935125 |
| 381182 | Nov 16, 1990 | Nov 16, 1990 | Sanchez-O'Brien Oil & Gas Corp. | Alexander, M.M. #1 | 9,200 | 47935126 |
| 381156 | Nov 16, 1990 | Nov 16, 1990 | Cobbs Brothers Oil & Gas | Perez, Julio Jr. #1 | 4,000 | 47935127 |
| 381105 | Nov 15, 1990 | Nov 15, 1990 | Enron Oil & Gas Company | Vaquillas Ranch 136 #1 | 8,900 | 47932594 |
| 380894 | Nov 14, 1990 | Nov 14, 1990 | Conoco Inc. | Vaquillas Ranch A-2 #76 | 10,400 | 47935124 |
| 380893 | Nov 14, 1990 | Nov 14, 1990 | Conoco Inc. | Vaquillas Ranch A6 #30 | 13,000 | 47933454 |
| 380742 | Nov 13, 1990 | Nov 13, 1990 | Reh Energy, Inc. | Vaquillas Ranch Co. Ltd. #3 | 2,000 | 47935123 |
| 380279 | Nov 13, 1990 | Nov 13, 1990 | EP Operating Company | Benavides, S. Est. #1 | 12,611 | 47934831 |
| 380242 | Nov 9, 1990 | Nov 9, 1990 | Chevron U. S. A. Inc. | C-Bruni Mineral Trust #27 | 9,000 | 47935119 |
| 380407 | Nov 7, 1990 | Nov 7, 1990 | Transamerican Natural Gas Corp. | Lundell "C" #2 | 10,200 | 47935121 |
| 380660 | Nov 6, 1990 | Nov 6, 1990 | Lynn Energy Corporation | Ramirez, Nellie #1 | 1,100 | 47935122 |
| 380243 | Nov 5, 1990 | Nov 5, 1990 | Transamerican Natural Gas Corp. | B.M.T. #30 | 11,000 | 47935120 |
| 380241 | Nov 5, 1990 | Nov 5, 1990 | Chevron U. S. A. Inc. | C-Bruni Mineral Trust #25 | 9,000 | 47935117 |
| 380241Amendment | Nov 5, 1990 | Nov 5, 1990 | Chevron U. S. A. Inc. | C-Bruni Mineral Trust #25 | 8,350 | 47935117 |
| 380239 | Nov 5, 1990 | Nov 5, 1990 | Texaco Producing Inc. | Dix Ranch #100C | 9,500 | 47935118 |
| 380239Amendment | Nov 5, 1990 | Nov 5, 1990 | Texaco E & P Inc. | Dix Ranch #100C | 9,500 | 47935118 |
| 380194 | Nov 1, 1990 | Nov 1, 1990 | Tri-C Resources, Inc. | Leal #2 | 6,000 | 47935116 |
| 380194Amendment | Nov 1, 1990 | Nov 1, 1990 | American Cometra, Inc. | Leal #2 | 6,300 | 47935116 |
| 380194Amendment | Nov 1, 1990 | Nov 1, 1990 | Cometra Oil and Gas, Inc. | Leal #2 | 6,300 | 47935116 |
| 379070 | Oct 25, 1990 | Oct 25, 1990 | Texas, L. Petroleum, Inc. | Armstrong Ranch #1 | 15,222 | 47934299 |
| 379650 | Oct 23, 1990 | Oct 23, 1990 | Conoco Inc. | Vaquillas Ranch A10 #75 | 13,100 | 47935112 |
| 379645 | Oct 23, 1990 | Oct 23, 1990 | Texas, L. Petroleum, Inc. | KHB 70 #1 | 13,500 | 47935111 |
| 379863 | Oct 22, 1990 | Oct 22, 1990 | American Exploration Company | Webb County School Land #7 | 7,000 | 47935114 |
| 379862 | Oct 22, 1990 | Oct 22, 1990 | American Exploration Company | Webb County School Land "A" #8 | 7,000 | 47935115 |
| 379861 | Oct 22, 1990 | Oct 22, 1990 | American Exploration Company | Webb County School Land #9 | 7,000 | 47935113 |
| 379841 | Oct 19, 1990 | Oct 19, 1990 | JRG Exploration, Inc. | Armstrong, Frank #1 | 10,640 | 47933592 |
| 379369 | Oct 17, 1990 | Oct 17, 1990 | Lobo Resources, Ltd. | Moglia, G. B. #1 | 11,176 | 47934524 |
| 378945 | Oct 17, 1990 | Oct 17, 1990 | Davis & Forbes | Duval County Ranch Co. #8A | 900 | 47935108 |
| 379009 | Oct 5, 1990 | Oct 5, 1990 | American Exploration Company | So. Lopez Unit #2213 | 2,400 | 47935109 |