| 494405 | Apr 24, 2000 | Apr 24, 2000 | Altura Energy Ltd. | Mooers #7 | 6,600 | 13537823 |
| 493983 | Apr 18, 2000 | Apr 18, 2000 | Texaco E & P Inc. | Holt, O. B. #95 | 4,565 | 13531593 |
| 492967 | Apr 17, 2000 | Apr 17, 2000 | Burleson, Lewis B. Inc. | Jessie B #3 | 4,100 | 13537812 |
| 494130 | Apr 14, 2000 | Apr 14, 2000 | Altura Energy Ltd. | Goldsmith-Landreth (Deep) Unit #327 | 6,600 | 13537822 |
| 494129 | Apr 14, 2000 | Apr 14, 2000 | Altura Energy Ltd. | Goldsmith-Landreth (Deep) Unit #326 | 6,600 | 13537821 |
| 494128 | Apr 14, 2000 | Apr 14, 2000 | Altura Energy Ltd. | Goldsmith-Landreth (Deep) Unit #323 | 6,600 | 13537820 |
| 493784 | Apr 13, 2000 | Apr 13, 2000 | Chevron U. S. A. Inc. | Goldsmith San Andres Unit #535 | 5,925 | 13500914 |
| 493579 | Mar 31, 2000 | Mar 31, 2000 | O'Ryan Oil and Gas | Amber Rae "19" #2 | 4,000 | 13531771 |
| 493578 | Mar 31, 2000 | Mar 31, 2000 | O'Ryan Oil and Gas | Amber Rae "19" #1 | 4,000 | 13506228 |
| 493348 | Mar 23, 2000 | Mar 23, 2000 | Phillips Petroleum Company | Goldsmith Andector Unit #F 8 | 6,500 | 13537818 |
| 493347 | Mar 23, 2000 | Mar 23, 2000 | Phillips Petroleum Company | Goldsmith Andector Unit #H 8 | 6,500 | 13537817 |
| 493200 | Mar 17, 2000 | Mar 17, 2000 | OXY USA Inc. | Hawkeye B #1 | 8,600 | 13537816 |
| 493200Amendment | Mar 17, 2000 | Mar 17, 2000 | OXY USA Inc. | Hawkeye B #1 | 8,600 | 13537816 |
| 493199 | Mar 17, 2000 | Mar 17, 2000 | OXY USA Inc. | Hot Lips #1 | 8,900 | 13537815 |
| 493138 | Mar 16, 2000 | Mar 16, 2000 | Phillips Petroleum Company | Elvera #1 | 3,960 | 13537814 |
| 493091 | Mar 15, 2000 | Mar 15, 2000 | OXY USA Inc. | RJ 44 #2 | 9,200 | 13537813 |
| 493061 | Mar 14, 2000 | Mar 14, 2000 | OXY USA Inc. | Orion 34 #1 | 4,230 | 13531333 |
| 492852 | Mar 8, 2000 | Mar 8, 2000 | Phillips Petroleum Company | South Cowden Unit #626 | 4,850 | 13537278 |
| 492851 | Mar 8, 2000 | Mar 8, 2000 | Phillips Petroleum Company | South Cowden Unit #627 | 4,950 | 13537280 |
| 492850 | Mar 8, 2000 | Mar 8, 2000 | Phillips Petroleum Company | South Cowden Unit #628 | 4,850 | 13537279 |
| 492808 | Mar 7, 2000 | Mar 7, 2000 | OXY USA Inc. | Orion 34 #2 | 4,450 | 13537391 |
| 492621 | Mar 2, 2000 | Mar 2, 2000 | Phillips Petroleum Company | Goldsmith Andector Unit #H 10 | 6,500 | 13537811 |
| 492621Amendment | Mar 2, 2000 | Mar 2, 2000 | Phillips Petroleum Company | Goldsmith Andector Unit #H 10 | 6,500 | 13537811 |
| 492620 | Mar 2, 2000 | Mar 2, 2000 | Phillips Petroleum Company | Goldsmith Andector Unit #K 9 | 6,500 | 13537810 |
| 492593 | Mar 1, 2000 | Mar 1, 2000 | Phillips Petroleum Company | Goldsmith Andector Unit #K125 | 6,500 | 13537808 |
| 492592 | Mar 1, 2000 | Mar 1, 2000 | Phillips Petroleum Company | Goldsmith Andector Unit #L125 | 6,500 | 13537809 |
| 492371 | Feb 29, 2000 | Feb 29, 2000 | Altura Energy Ltd. | North Cowden Unit #1503 | 4,800 | 13537804 |
| 492375 | Feb 28, 2000 | Feb 28, 2000 | Altura Energy Ltd. | North Cowden Unit #1506 | 4,800 | 13537807 |
| 492373 | Feb 28, 2000 | Feb 28, 2000 | Altura Energy Ltd. | North Cowden Unit #1505 | 4,800 | 13537806 |
| 492372 | Feb 28, 2000 | Feb 28, 2000 | Altura Energy Ltd. | North Cowden Unit #1504 | 4,800 | 13537805 |
| 492279 | Feb 25, 2000 | Feb 25, 2000 | Texaco E & P Inc. | McDonald, Ida #10 | 8,883 | 13502311 |
| 492340 | Feb 22, 2000 | Feb 22, 2000 | Fasken Oil and Ranch, Ltd. | C Ranch #1 | 10,750 | 13537802 |
| 492166 | Feb 18, 2000 | Feb 18, 2000 | Southwest Royalties, Inc. | Gist Unit #159 | 4,600 | 13537799 |
| 492193 | Feb 17, 2000 | Feb 17, 2000 | OXY USA Inc. | Fife, Barney #1 | 8,600 | 13537800 |
| 492193Amendment | Feb 17, 2000 | Feb 17, 2000 | OXY USA Inc. | Fife, Barney #1 | 8,610 | 13537800 |
| 492192 | Feb 17, 2000 | Feb 17, 2000 | OXY USA Inc. | Piggy Platter #1 | 10,100 | 13537801 |
| 492069 | Feb 16, 2000 | Feb 16, 2000 | Burleson, Lewis B. Inc. | TXL 'E' #2 | 5,600 | 13505418 |
| 492066 | Feb 14, 2000 | Feb 14, 2000 | OXY USA Inc. | RJ 5 #1 | 10,300 | 13537798 |
| 492066Amendment | Feb 14, 2000 | Feb 14, 2000 | OXY USA Inc. | RJ 5 #1 | 10,300 | 13537798 |
| 491990 | Feb 11, 2000 | Feb 11, 2000 | Phillips Petroleum Company | South Cowden Unit #622H | 4,950 | 13536940 |
| 491990Amendment | Feb 11, 2000 | Feb 11, 2000 | Phillips Petroleum Company | South Cowden Unit #622H | 4,950 | 13536940 |
| 491989 | Feb 11, 2000 | Feb 11, 2000 | Phillips Petroleum Company | South Cowden Unit #623H | 4,900 | 13536941 |
| 491988 | Feb 11, 2000 | Feb 11, 2000 | Phillips Petroleum Company | South Cowden Unit #713H | 4,900 | 13537272 |
| 491685 | Feb 9, 2000 | Feb 9, 2000 | Arco Permian | Corrigan Cowden Unit #325H | 4,600 | 13536096 |
| 491684 | Feb 9, 2000 | Feb 9, 2000 | Arco Permian | Corrigan Cowden Unit #320H | 4,650 | 13534506 |
| 491683 | Feb 9, 2000 | Feb 9, 2000 | Arco Permian | Corrigan Cowden Unit #319H | 4,650 | 13534484 |
| 491682 | Feb 9, 2000 | Feb 9, 2000 | Arco Permian | Corrigan Cowden Unit #201H | 4,600 | 13508354 |
| 491880 | Feb 8, 2000 | Feb 8, 2000 | Texaco E & P Inc. | Averitt "F" No. 1H #1HH | 10,150 | 13537582 |
| 491758 | Feb 8, 2000 | Feb 8, 2000 | Chevron U. S. A. Inc. | Goldsmith San Andres Unit #621 | 5,900 | 13500999 |
| 490292 | Feb 3, 2000 | Feb 3, 2000 | B & B Production Co | Ector -AM- Fee #1 | 9,000 | 13510338 |
| 491541 | Feb 2, 2000 | Feb 2, 2000 | Altura Energy Ltd. | Goldsmith-Landreth (Deep) Unit #319 | 6,600 | 13537795 |
| 491540 | Feb 2, 2000 | Feb 2, 2000 | Altura Energy Ltd. | Goldsmith-Landreth (Deep) Unit #317 | 6,600 | 13537796 |
| 491539 | Feb 2, 2000 | Feb 2, 2000 | Altura Energy Ltd. | Goldsmith-Landreth (Deep) Unit #316 | 6,600 | 13537797 |
| 491453 | Jan 28, 2000 | Jan 28, 2000 | Great Western Drlg. Co. | Johnson, J. L. -31- #24 | 4,300 | 13535657 |
| 491499 | Jan 27, 2000 | Jan 27, 2000 | OXY USA Inc. | Bearcat #1 | 10,000 | 13537794 |
| 491138 | Jan 21, 2000 | Jan 21, 2000 | Chevron U. S. A. Inc. | Goldsmith, C. A. et Al #1301 | 8,150 | 13530392 |
| 491137 | Jan 21, 2000 | Jan 21, 2000 | Chevron U. S. A. Inc. | Goldsmith, C. A. et Al #822 | 8,150 | 13501194 |
| 490539 | Jan 20, 2000 | Jan 20, 2000 | Phillips Petroleum Company | Demc #1 | 4,000 | 13537786 |
| 490539Amendment | Jan 20, 2000 | Jan 20, 2000 | Phillips Petroleum Company | Demc #1 | 4,000 | 13537786 |
| 491136 | Jan 19, 2000 | Jan 19, 2000 | Chevron U. S. A. Inc. | Goldsmith, C. A. et Al #999 E | 10,000 | 13520219 |
| 491099 | Jan 14, 2000 | Jan 14, 2000 | OXY USA Inc. | Moss E #3 | 10,820 | 13510217 |
| 491006 | Jan 12, 2000 | Jan 12, 2000 | OXY USA Inc. | Hawkeye C #1 | 8,600 | 13537793 |
| 491005 | Jan 12, 2000 | Jan 12, 2000 | Phillips Petroleum Company | Goldsmith Andector Unit #J 12 | 6,500 | 13537792 |
| 491004 | Jan 12, 2000 | Jan 12, 2000 | Phillips Petroleum Company | Goldsmith Andector Unit #K 11 | 6,500 | 13537790 |
| 491003 | Jan 12, 2000 | Jan 12, 2000 | Phillips Petroleum Company | Goldsmith Andector Unit #J 10 | 6,500 | 13537791 |
| 490961 | Jan 10, 2000 | Jan 10, 2000 | Saga Pet. Ltd Liability Co of Co | Parker, J. E. #6 | 9,100 | 13503700 |
| 490925 | Jan 7, 2000 | Jan 7, 2000 | Saga Pet. Ltd Liability Co of Co | Parker, J. E. #7 | 7,600 | 13503697 |
| 490923 | Jan 7, 2000 | Jan 7, 2000 | Saga Pet. Ltd Liability Co of Co | Parker, J. E. #3 | 8,450 | 13503702 |
| 490832 | Jan 5, 2000 | Jan 5, 2000 | Phillips Petroleum Company | Speck #4 | 4,150 | 13537789 |
| 490760 | Dec 30, 1999 | Dec 30, 1999 | Union Oil Company of California | Conger #1701 | 13,900 | 13537788 |
| 490699 | Dec 28, 1999 | Dec 28, 1999 | Saga Pet. Ltd Liability Co of Co | Parker, J. E. #2 | 7,490 | 13503701 |
| 490542 | Dec 21, 1999 | Dec 21, 1999 | Lario Oil & Gas Company | Blakeney "B" #3 | 3,950 | 13537787 |
| 489608 | Dec 13, 1999 | Dec 13, 1999 | Yucca Energy, Inc. | Forest #2 | 4,200 | 13537781 |
| 489974 | Dec 7, 1999 | Dec 7, 1999 | Texaco E & P Inc. | Henderson, S. #1 | 7,380 | 13537006 |
| 489945 | Dec 1, 1999 | Dec 1, 1999 | OXY USA Inc. | RJ #1901 | 13,900 | 13537785 |
| 489945Amendment | Dec 1, 1999 | Dec 1, 1999 | OXY USA Inc. | RJ 19 #1 | 13,871 | 13537785 |
| 489853 | Nov 29, 1999 | Nov 29, 1999 | OXY USA Inc. | RJ #301 | 13,900 | 13537784 |
| 489852 | Nov 29, 1999 | Nov 29, 1999 | OXY USA Inc. | Hellcat #1 | 10,000 | 13537783 |
| 489598 | Nov 23, 1999 | Nov 23, 1999 | Altura Energy Ltd. | Cowden, Frank R/a -B- #9 | 5,400 | 13503097 |
| 489527 | Nov 22, 1999 | Nov 22, 1999 | Altura Energy Ltd. | Smith, R. W. -F- #13 | 6,000 | 13537780 |
| 489527Amendment | Nov 22, 1999 | Nov 22, 1999 | Altura Energy Ltd. | Smith, R. W. -F- #13 | 6,000 | 13537780 |
| 489667 | Nov 19, 1999 | Nov 19, 1999 | Laguna Petroleum Corporation | Witcher, J. E. #14 | 4,500 | 13537782 |
| 489095 | Nov 12, 1999 | Nov 12, 1999 | Big "6" Drilling Company | Fraser, George C. "B" #7 | 12,175 | 13530434 |
| 489108 | Nov 5, 1999 | Nov 5, 1999 | Altura Energy Ltd. | Smith R. W. -F- #12 | 6,000 | 13537779 |
| 488949 | Oct 28, 1999 | Oct 28, 1999 | Titan Resources I, Inc. | J. L. Johnson, Jr., Unit/EO #59 | 8,000 | 13537778 |
| 488812 | Oct 27, 1999 | Oct 27, 1999 | Merit Energy Company | Alma #8 | 9,800 | 13502441 |
| 488507 | Oct 19, 1999 | Oct 19, 1999 | Cuervo, Inc. | Cowden, E. F. -D- #3 | 4,500 | 13503011 |
| 488564 | Oct 18, 1999 | Oct 18, 1999 | Titan Resources I, Inc. | North Foster Unit #170 | 5,000 | 13537777 |
| 488563 | Oct 18, 1999 | Oct 18, 1999 | Titan Resources I, Inc. | North Foster Unit #171 | 5,000 | 13537776 |
| 488562 | Oct 18, 1999 | Oct 18, 1999 | Titan Resources I, Inc. | North Foster Unit #172 | 5,000 | 13537775 |
| 488508 | Oct 18, 1999 | Oct 18, 1999 | Cuervo, Inc. | Cowden, E. F. -D- #2 | 4,500 | 13503010 |
| 487813 | Oct 15, 1999 | Oct 15, 1999 | Alto Minerals, Inc. | Holt "A" #2 | 4,075 | 13533348 |
| 487812 | Oct 15, 1999 | Oct 15, 1999 | Alto Minerals, Inc. | Holt "A" #1 | 4,060 | 13521550 |
| 487104 | Oct 14, 1999 | Oct 14, 1999 | Cody Energy LLC | Moss, Paul "E" #200 | 13,866 | 13536857 |
| 488473 | Oct 13, 1999 | Oct 13, 1999 | OXY USA Inc. | Williamson Estate 28 #1 | 8,300 | 13535214 |
| 486806 | Oct 13, 1999 | Oct 13, 1999 | OXY USA Inc. | Tomcat #1 | 10,100 | 13537764 |
| 488145 | Oct 8, 1999 | Oct 8, 1999 | Cody Energy LLC | Moss, Paul #105 L | 13,815 | 13530141 |
| 466697Amendment | Oct 4, 1999 | Oct 4, 1999 | Eureka Prospecting Company | Ratliff, Sallie W. #4 | 11,000 | 13505000 |
| 486175 | Sep 30, 1999 | Sep 30, 1999 | Anadarko Petroleum Corp. | Cummins, H. E. 'B' #31 | 7,000 | 13537495 |
| 487842 | Sep 22, 1999 | Sep 22, 1999 | Altura Energy Ltd. | Goldsmith-Landreth (Deep) Unit #310 | 6,600 | 13537773 |