| 387861Amendment | May 16, 1991 | May 16, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #544W | 5,000 | 21935763 |
| 387856 | May 16, 1991 | May 16, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #549W | 5,000 | 21935762 |
| 387856Amendment | May 16, 1991 | May 16, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #549W | 5,000 | 21935762 |
| 387871 | May 15, 1991 | May 15, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #535 | 5,000 | 07932599 |
| 387871Amendment | May 15, 1991 | May 15, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #535 | 5,000 | 07932599 |
| 387866 | May 15, 1991 | May 15, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #540 | 5,000 | 07932600 |
| 387866Amendment | May 15, 1991 | May 15, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #540 | 5,000 | 07932600 |
| 387865 | May 15, 1991 | May 15, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #541 | 5,000 | 07932601 |
| 387865Amendment | May 15, 1991 | May 15, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #541 | 5,000 | 07932601 |
| 387864 | May 15, 1991 | May 15, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #542 | 5,000 | 07932602 |
| 387864Amendment | May 15, 1991 | May 15, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #542 | 5,000 | 07932602 |
| 387858 | May 15, 1991 | May 15, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #547W | 5,000 | 21935760 |
| 387858Amendment | May 15, 1991 | May 15, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #547W | 5,000 | 21935760 |
| 387857 | May 15, 1991 | May 15, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #548W | 5,000 | 21935761 |
| 387857Amendment | May 15, 1991 | May 15, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #548W | 5,000 | 21935761 |
| 387869 | May 14, 1991 | May 14, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #537 | 5,000 | 07932596 |
| 387869Amendment | May 14, 1991 | May 14, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #537 | 5,000 | 07932596 |
| 387868 | May 14, 1991 | May 14, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #538 | 5,000 | 07932597 |
| 387868Amendment | May 14, 1991 | May 14, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #538 | 5,000 | 07932597 |
| 387859 | May 14, 1991 | May 14, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #546 | 5,000 | 21935758 |
| 387859Amendment | May 14, 1991 | May 14, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #546 | 5,000 | 21935758 |
| 387855 | May 14, 1991 | May 14, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #550 | 5,000 | 21935757 |
| 387855Amendment | May 14, 1991 | May 14, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #550 | 5,000 | 21935757 |
| 387638 | May 13, 1991 | May 13, 1991 | Mobil Producing TX. & N.M. Inc. | Galveston | State Tract No. 346 #1 | 18,000 | 16731195 |
| 387637 | May 13, 1991 | May 13, 1991 | Mobil Producing TX. & N.M. Inc. | Galveston | State Tract No. 114A #1 | 18,000 | 16731194 |
| 386937 | May 13, 1991 | May 13, 1991 | Mobil Producing TX. & N.M. Inc. | Houston | Ralph J. Walters Oil Unit No. 2 #1 | 2,000 | 22530837 |
| 386215 | May 10, 1991 | May 10, 1991 | Mobil Producing TX. & N.M. Inc. | Hardin | Mills, Nona #7 | 8,605 | 19900517 |
| 387576 | May 9, 1991 | May 9, 1991 | Mobil Producing TX. & N.M. Inc. | Andrews | Minton, E. H. a/C #2 #24 | 10,000 | 00336928 |
| 387512 | May 9, 1991 | May 9, 1991 | Mobil Producing TX. & N.M. Inc. | Andrews | Nolley Wolfcamp Sec. Recvry Unit #1009 | 9,700 | 00336929 |
| 387511 | May 9, 1991 | May 9, 1991 | Mobil Producing TX. & N.M. Inc. | Andrews | Nolley Wolfcamp SE. Recvry Unit #1008 | 9,700 | 00336927 |
| 387516 | May 8, 1991 | May 8, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | G. B. G. L and C. Co., Ltd. #1 | 9,000 | 47935230 |
| 387499 | May 6, 1991 | May 6, 1991 | Mobil Producing TX. & N.M. Inc. | Jackson | Gordin Estate #28 | 7,797 | 23932198 |
| 387011 | May 6, 1991 | May 6, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #46 | 9,000 | 47935220 |
| 387351 | May 1, 1991 | May 1, 1991 | Mobil Producing TX. & N.M. Inc. | Harrison | Cargill, G. E. #13 | 6,269 | 20331413 |
| 387351Amendment | May 1, 1991 | May 1, 1991 | Mobil Producing TX. & N.M. Inc. | Harrison | Cargill, G. E. #13 | 6,269 | 20331413 |
| 387350 | May 1, 1991 | May 1, 1991 | Mobil Producing TX. & N.M. Inc. | Montgomery | Lake Creek Unit #46 | 12,925 | 33930814 |
| 386868 | Apr 22, 1991 | Apr 22, 1991 | Mobil Producing TX. & N.M. Inc. | Hardin | Nona Mills Field Unit #1801 | 8,605 | 19900507 |
| 386868Amendment | Apr 22, 1991 | Apr 22, 1991 | Mobil Producing TX. & N.M. Inc. | Hardin | Buchanan-Wheeler Unit NO.2 #1 | 8,605 | 19900507 |
| 386950 | Apr 18, 1991 | Apr 18, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | Wilson, Maple #113 | 5,100 | 21935739 |
| 386949 | Apr 18, 1991 | Apr 18, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | Wilson, Maple #112 | 5,100 | 21935740 |
| 386948 | Apr 18, 1991 | Apr 18, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | Wilson, Maple #111 | 5,100 | 21935741 |
| 386947 | Apr 18, 1991 | Apr 18, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | Wilson, Maple #110 | 5,100 | 21935742 |
| 386885 | Apr 17, 1991 | Apr 17, 1991 | Mobil Producing TX. & N.M. Inc. | Andrews | Cowden "N" #2 | 12,660 | 00310382 |
| 386879 | Apr 17, 1991 | Apr 17, 1991 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Dunlap, B.H. #71 | 8,700 | 24932175 |
| 386879Amendment | Apr 17, 1991 | Apr 17, 1991 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Dunlap, B.H. #71 | 8,700 | 24932175 |
| 386734 | Apr 12, 1991 | Apr 12, 1991 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #48 | 6,580 | 23902403 |
| 386623 | Apr 10, 1991 | Apr 10, 1991 | Mobil Producing TX. & N.M. Inc. | Gaines | East Seminole (San Andres) Unit #3WSW | 2,100 | 16534343 |
| 386616 | Apr 10, 1991 | Apr 10, 1991 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #48 | 6,580 | 23902403 |
| 386527 | Apr 10, 1991 | Apr 10, 1991 | Mobil Producing TX. & N.M. Inc. | Jim Wells | La Gloria Gas Unit #98 | 8,013 | 24931371 |
| 386562 | Apr 9, 1991 | Apr 9, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | Callaghan Ranch #19 | 6,650 | 47930811 |
| 386448 | Apr 9, 1991 | Apr 9, 1991 | Mobil Producing TX. & N.M. Inc. | Hardin | Nona Mills Field Unit #2501 | 8,507 | 19900499 |
| 386323 | Apr 5, 1991 | Apr 5, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | Callaghan Ranch #26 | 6,640 | 47930915 |
| 386302 | Apr 5, 1991 | Apr 5, 1991 | Mobil Producing TX. & N.M. Inc. | Upton | Powell, Virgil B #4 | 10,762 | 46133007 |
| 386561 | Apr 4, 1991 | Apr 4, 1991 | Mobil Producing TX. & N.M. Inc. | Jim Wells | La Gloria Gas Unit #80 | 7,350 | 24903458 |
| 386230 | Apr 2, 1991 | Apr 2, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #9 | 8,875 | 47934215 |
| 386229 | Apr 2, 1991 | Apr 2, 1991 | Mobil Producing TX. & N.M. Inc. | San Patricio | Welder, Minnie S. #66 | 8,600 | 40931893 |
| 386229Amendment | Apr 2, 1991 | Apr 2, 1991 | Mobil Producing TX. & N.M. Inc. | San Patricio | Welder, Minnie S. #66 | 8,600 | 40931893 |
| 386248 | Apr 1, 1991 | Apr 1, 1991 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #312 | 6,700 | 23902660 |
| 386214 | Mar 28, 1991 | Mar 28, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #43 | 11,000 | 47935208 |
| 386214Amendment | Mar 28, 1991 | Mar 28, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #43 | 12,000 | 47935208 |
| 386214Amendment | Mar 28, 1991 | Mar 28, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #43 | 12,000 | 47935208 |
| 385903 | Mar 28, 1991 | Mar 28, 1991 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #391 | 7,050 | 23902738 |
| 386150 | Mar 27, 1991 | Mar 27, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #44 | 9,900 | 47935207 |
| 386150Amendment | Mar 27, 1991 | Mar 27, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #44 | 9,900 | 47935207 |
| 397800 | Mar 26, 1991 | Mar 26, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #65 | 7,150 | 47935434 |
| 397800Amendment | Mar 26, 1991 | Mar 26, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #65 | 7,700 | 47935434 |
| 385571 | Mar 25, 1991 | Mar 25, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | Wright Unit #775 | 5,050 | 07932587 |
| 385570 | Mar 25, 1991 | Mar 25, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | Wright Unit #1076 | 5,050 | 07932586 |
| 385940 | Mar 22, 1991 | Mar 22, 1991 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Blucher, C. F. H. #59 | 8,100 | 24931991 |
| 385808 | Mar 20, 1991 | Mar 20, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | Stanford, P. H. #5 | 10,100 | 47935200 |
| 385774 | Mar 20, 1991 | Mar 20, 1991 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Blucher, C.F.H. #1 | 7,576 | 24903499 |
| 385907 | Mar 19, 1991 | Mar 19, 1991 | Mobil Producing TX. & N.M. Inc. | San Patricio | Rachal #80 | 9,520 | 40932165 |
| 385907Amendment | Mar 19, 1991 | Mar 19, 1991 | Mobil Producing TX. & N.M. Inc. | San Patricio | Rachal #80 | 9,520 | 40932165 |
| 385773 | Mar 19, 1991 | Mar 19, 1991 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch State Oil&gas Unit 1 #2 | 8,805 | 23903828 |
| 385573 | Mar 19, 1991 | Mar 19, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | Wright Unit #574 | 5,050 | 07932588 |
| 385862 | Mar 18, 1991 | Mar 18, 1991 | Mobil Producing TX. & N.M. Inc. | Andrews | Cowden Estate et Al #9 | 13,300 | 00336916 |
| 385862Amendment | Mar 18, 1991 | Mar 18, 1991 | Mobil Producing TX. & N.M. Inc. | Andrews | Cowden Estate et Al #9 | 13,300 | 00336916 |
| 385492 | Mar 8, 1991 | Mar 8, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | Wright Unit #273 | 5,050 | 07932584 |
| 385491 | Mar 8, 1991 | Mar 8, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | Wright Unit #272 | 5,050 | 07932585 |
| 385348 | Mar 6, 1991 | Mar 6, 1991 | Mobil Producing TX. & N.M. Inc. | Hardin | Feldman, D. D. Fee #B799R | 1,130 | 19932611 |
| 385260 | Mar 4, 1991 | Mar 4, 1991 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A.A. #247 | 7,781 | 24932109 |
| 385225 | Mar 4, 1991 | Mar 4, 1991 | Mobil Producing TX. & N.M. Inc. | Nueces | Chapman Ranch "B" #10 | 1,300 | 35532842 |
| 385225Amendment | Mar 4, 1991 | Mar 4, 1991 | Mobil Producing TX. & N.M. Inc. | Nueces | Chapman Ranch "B" #10 | 13,000 | 35532842 |
| 385216 | Feb 28, 1991 | Feb 28, 1991 | Mobil Producing TX. & N.M. Inc. | Hardin | Nona Mills Field Unit #2303 | 8,570 | 19900492 |
| 385215 | Feb 28, 1991 | Feb 28, 1991 | Mobil Producing TX. & N.M. Inc. | Colorado | Chesterville Unit #9 | 7,113 | 08930159 |
| 384978 | Feb 28, 1991 | Feb 28, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #41 | 9,150 | 47935185 |
| 384978Amendment | Feb 28, 1991 | Feb 28, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #41 | 9,150 | 47935185 |
| 384140 | Feb 25, 1991 | Feb 25, 1991 | Mobil Producing TX. & N.M. Inc. | Hidalgo | Johnson, F. I. #56F | 8,759 | 21531607 |
| 384977 | Feb 22, 1991 | Feb 22, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | Callaghan Ranch, South #16 | 9,000 | 47934589 |
| 384976 | Feb 22, 1991 | Feb 22, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | Callaghan Ranch, South #42 | 9,300 | 47935184 |
| 384960 | Feb 21, 1991 | Feb 21, 1991 | Mobil Producing TX. & N.M. Inc. | Gaines | Seminole Deep Z #1 | 12,500 | 16534318 |
| 384857 | Feb 21, 1991 | Feb 21, 1991 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A. A. #84 | 7,921 | 24902797 |
| 384752 | Feb 21, 1991 | Feb 21, 1991 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #528 | 5,800 | 23932583 |
| 384903 | Feb 20, 1991 | Feb 20, 1991 | Mobil Producing TX. & N.M. Inc. | Webb | Stanford, P. H. #3 | 9,500 | 47934502 |
| 384820 | Feb 20, 1991 | Feb 20, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | East Mallet Unit #145 | 5,200 | 21935724 |
| 384819 | Feb 20, 1991 | Feb 20, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | East Mallet Unit #77A | 5,200 | 21935723 |
| 384818 | Feb 20, 1991 | Feb 20, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | East Mallet Unit #143W | 5,200 | 21935722 |
| 384817 | Feb 20, 1991 | Feb 20, 1991 | Mobil Producing TX. & N.M. Inc. | Hockley | East Mallet Unit #144 | 5,200 | 21935721 |
| 384562 | Feb 13, 1991 | Feb 13, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | Boyd Mallet Unit #87 | 5,150 | 07932576 |
| 384561 | Feb 13, 1991 | Feb 13, 1991 | Mobil Producing TX. & N.M. Inc. | Cochran | Boyd Mallet Unit #88 | 5,150 | 07932575 |