| 374012 | Aug 8, 1990 | Aug 8, 1990 | Mobil Producing TX. & N.M. Inc. | Colorado | Chesterville Unit #12 | 12,000 | 08931795 |
| 376273 | Aug 6, 1990 | Aug 6, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #516 | 7,500 | 23932230 |
| 376098 | Aug 6, 1990 | Aug 6, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | Mallet Unit #1145 | 5,200 | 21935605 |
| 377451 | Aug 3, 1990 | Aug 3, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #520 | 6,545 | 23932286 |
| 376115 | Aug 1, 1990 | Aug 1, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #351 | 7,000 | 23902698 |
| 376115Amendment | Aug 1, 1990 | Aug 1, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #351 | 7,000 | 23902698 |
| 376096 | Aug 1, 1990 | Aug 1, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | Mallet Unit #150A | 5,200 | 21935602 |
| 376043 | Aug 1, 1990 | Aug 1, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #337 | 7,000 | 23902684 |
| 376043Amendment | Aug 1, 1990 | Aug 1, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #337 | 7,000 | 23902684 |
| 376097 | Jul 31, 1990 | Jul 31, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | Mallet Unit #149A | 5,200 | 21935603 |
| 376095 | Jul 31, 1990 | Jul 31, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | Mallet Unit #158A | 5,200 | 21935601 |
| 376094 | Jul 31, 1990 | Jul 31, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | Mallet Unit #205A | 5,200 | 21935600 |
| 376093 | Jul 31, 1990 | Jul 31, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | Mallet Unit #134A | 5,200 | 21935599 |
| 376006 | Jul 30, 1990 | Jul 30, 1990 | Mobil Producing TX. & N.M. Inc. | Andrews | Minton, A. C. #2 #22 | 12,000 | 00336448 |
| 375939 | Jul 30, 1990 | Jul 30, 1990 | Mobil Producing TX. & N.M. Inc. | Midland | Haley, C. B. #1 | 10,000 | 32900903 |
| 375746 | Jul 30, 1990 | Jul 30, 1990 | Mobil Producing TX. & N.M. Inc. | Hidalgo | Hamman, John "B" #22 | 11,500 | 21531549 |
| 375822 | Jul 26, 1990 | Jul 26, 1990 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #2503 | 12,800 | 46103364 |
| 375799 | Jul 25, 1990 | Jul 25, 1990 | Mobil Producing TX. & N.M. Inc. | Andrews | Armstrong, Elizabeth #24 | 9,800 | 00335850 |
| 375833 | Jul 24, 1990 | Jul 24, 1990 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #29 | 7,800 | 47935067 |
| 375745 | Jul 24, 1990 | Jul 24, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | La Gloria Gas Unit #106 | 7,200 | 24931902 |
| 375701 | Jul 23, 1990 | Jul 23, 1990 | Mobil Producing TX. & N.M. Inc. | Montgomery | Lake Creek Unit #43 | 12,965 | 33930783 |
| 375508 | Jul 20, 1990 | Jul 20, 1990 | Mobil Producing TX. & N.M. Inc. | Duval | Duval Ranch Sec. 96 #10 | 2,326 | 13111183 |
| 375385 | Jul 12, 1990 | Jul 12, 1990 | Mobil Producing TX. & N.M. Inc. | Atascosa | Orta, Augustin #3 | 7,389 | 01301789 |
| 375271 | Jul 12, 1990 | Jul 12, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #504 | 6,350 | 23932013 |
| 375255 | Jul 11, 1990 | Jul 11, 1990 | Mobil Producing TX. & N.M. Inc. | Live Oak | Block 85 Unit #4 | 8,800 | 29733954 |
| 375209 | Jul 6, 1990 | Jul 6, 1990 | Mobil Producing TX. & N.M. Inc. | Colorado | Tait, R. E. et Al #1 | 10,939 | 08900183 |
| 375209Amendment | Jul 6, 1990 | Jul 6, 1990 | Mobil Producing TX. & N.M. Inc. | Colorado | Tait, R. E. et Al #1 | 10,939 | 08900183 |
| 375209Amendment | Jul 6, 1990 | Jul 6, 1990 | Mobil Producing TX. & N.M. Inc. | Colorado | Tait, R. E. et Al #1 | 10,939 | 08900183 |
| 374413 | Jul 6, 1990 | Jul 6, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #513 | 6,470 | 23932215 |
| 375048 | Jul 2, 1990 | Jul 2, 1990 | Mobil Producing TX. & N.M. Inc. | Midland | Collings, H. S. #3 | 9,930 | 32900972 |
| 374998 | Jun 28, 1990 | Jun 28, 1990 | Mobil Producing TX. & N.M. Inc. | Galveston | Halls Bayou Ranch, Tr. 2 #1 | 12,500 | 16731183 |
| 374863 | Jun 28, 1990 | Jun 28, 1990 | Mobil Producing TX. & N.M. Inc. | Hemphill | Urschel, Lester B. #23 | 16,800 | 21131937 |
| 374863Amendment | Jun 28, 1990 | Jun 28, 1990 | Mobil Producing TX. & N.M. Inc. | Hemphill | Urschel, Lester B. #23 | 16,800 | 21131937 |
| 374863Amendment | Jun 28, 1990 | Jun 28, 1990 | Mobil Producing TX. & N.M. Inc. | Hemphill | Urschel, Lester B. #23 | 17,500 | 21131937 |
| 374863Amendment | Jun 28, 1990 | Jun 28, 1990 | Mobil Producing TX. & N.M. Inc. | Hemphill | Urschel, Lester B. #23 | 17,500 | 21131937 |
| 374946 | Jun 27, 1990 | Jun 27, 1990 | Mobil Producing TX. & N.M. Inc. | Ector | Ratliff, Sallie W. #4 | 11,800 | 13505000 |
| 374946Amendment | Jun 27, 1990 | Jun 27, 1990 | Mobil Producing TX. & N.M. Inc. | Ector | Ratliff, Sallie W. #4 | 11,800 | 13505000 |
| 374753 | Jun 22, 1990 | Jun 22, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A.A. #83 | 7,800 | 24902796 |
| 374753Amendment | Jun 22, 1990 | Jun 22, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A.A. #83 | 7,800 | 24902796 |
| 374675 | Jun 20, 1990 | Jun 20, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #449 | 6,350 | 23902795 |
| 374611 | Jun 20, 1990 | Jun 20, 1990 | Mobil Producing TX. & N.M. Inc. | Pecos | Moore, Kathleen J. "B" #1 | 21,900 | 37133280 |
| 374351 | Jun 15, 1990 | Jun 15, 1990 | Mobil Producing TX. & N.M. Inc. | Gaines | H & J Sec. 451 #23 | 6,400 | 16534178 |
| 374349 | Jun 15, 1990 | Jun 15, 1990 | Mobil Producing TX. & N.M. Inc. | Gaines | H & J Sec. 127 "B" #24 | 5,700 | 16534177 |
| 374510 | Jun 14, 1990 | Jun 14, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #337 | 6,355 | 23902684 |
| 374454 | Jun 13, 1990 | Jun 13, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A. A. #249 | 8,600 | 24932154 |
| 374454Amendment | Jun 13, 1990 | Jun 13, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A. A. #249 | 8,600 | 24932154 |
| 374306 | Jun 11, 1990 | Jun 11, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #386 | 6,306 | 23902733 |
| 374283 | Jun 8, 1990 | Jun 8, 1990 | Mobil Producing TX. & N.M. Inc. | Andrews | Shafter Lake San Andres Unit #341 | 4,800 | 00336764 |
| 374148 | Jun 8, 1990 | Jun 8, 1990 | Mobil Producing TX. & N.M. Inc. | Hardin | Nona Mills Field Unit #2510 | 8,513 | 19930341 |
| 374148Amendment | Jun 8, 1990 | Jun 8, 1990 | Mobil Producing TX. & N.M. Inc. | Hardin | Nona Mills Field Unit #2510 | 8,513 | 19930341 |
| 375120 | Jun 7, 1990 | Jun 7, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | La Gloria Gas Unit #83 | 6,550 | 24903447 |
| 374026 | Jun 5, 1990 | Jun 5, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | Wilson, Maple #4A | 5,100 | 21935597 |
| 373967 | Jun 1, 1990 | Jun 1, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch State Oil & Gas Unit #7 | 7,263 | 23930071 |
| 373920 | May 31, 1990 | May 31, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | Gordin Estate #26 | 5,480 | 23932060 |
| 373883 | May 31, 1990 | May 31, 1990 | Mobil Producing TX. & N.M. Inc. | Midland | Pegasus Pennsylvanian Unit #301 | 10,630 | 32901070 |
| 373831 | May 25, 1990 | May 25, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #388 | 5,852 | 23902735 |
| 373830 | May 25, 1990 | May 25, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #332 | 6,354 | 23902679 |
| 372838 | May 25, 1990 | May 25, 1990 | Mobil Producing TX. & N.M. Inc. | Calhoun | Traylor, Maude B. #12 | 12,000 | 05731381 |
| 372582 | May 25, 1990 | May 25, 1990 | Mobil Producing TX. & N.M. Inc. | Hidalgo | Johnson, F.I. #57D | 8,627 | 21531630 |
| 373792 | May 24, 1990 | May 24, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #391 | 7,050 | 23902738 |
| 373709 | May 24, 1990 | May 24, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch 'A' #515 | 6,440 | 23932224 |
| 373709Amendment | May 24, 1990 | May 24, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch 'A' #515 | 6,440 | 23932224 |
| 373709Amendment | May 24, 1990 | May 24, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch 'A' #515 | 6,440 | 23932224 |
| 373636 | May 24, 1990 | May 24, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #160A | 5,000 | 21935591 |
| 373635 | May 24, 1990 | May 24, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #516 | 5,000 | 21935596 |
| 373634 | May 24, 1990 | May 24, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #517 | 5,000 | 21935595 |
| 373606 | May 24, 1990 | May 24, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | La Gloria Gas Unit #17 | 6,955 | 24903471 |
| 373534 | May 22, 1990 | May 22, 1990 | Mobil Producing TX. & N.M. Inc. | San Patricio | Welder, Minnie S. #66 | 8,600 | 40931893 |
| 373383 | May 18, 1990 | May 18, 1990 | Mobil Producing TX. & N.M. Inc. | Marion | Cartwright, L. (Cartwright Unit) #3 | 9,250 | 31530771 |
| 373301 | May 18, 1990 | May 18, 1990 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit No. 3 #4903 | 13,142 | 46103333 |
| 373152 | May 15, 1990 | May 15, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A. A. #157 | 9,000 | 24980131 |
| 373152Amendment | May 15, 1990 | May 15, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A. A. #157 | 9,000 | 24980131 |
| 373141 | May 15, 1990 | May 15, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A. A. #247 | 7,781 | 24932109 |
| 373208 | May 11, 1990 | May 11, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #522 | 8,494 | 23932378 |
| 373208Amendment | May 11, 1990 | May 11, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #522 | 8,494 | 23932378 |
| 365788Amendment | May 11, 1990 | May 11, 1990 | Mobil Producing TX. & N.M. Inc. | Wilbarger | H & TC #167 | 2,730 | 48731915 |
| 373137 | May 10, 1990 | May 10, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #516 | 6,450 | 23932230 |
| 373136 | May 10, 1990 | May 10, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #517 | 8,550 | 23932249 |
| 373014 | May 8, 1990 | May 8, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, Arthur a et Al #8 | 10,000 | 24932151 |
| 373014Amendment | May 8, 1990 | May 8, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, Arthur A. et Al #8 | 10,000 | 24932151 |
| 372074 | May 8, 1990 | May 8, 1990 | Mobil Producing TX. & N.M. Inc. | Crane | University Waddell Devonian Unit #422 | 9,500 | 10334069 |
| 372917 | May 3, 1990 | May 3, 1990 | Mobil Producing TX. & N.M. Inc. | McMullen | Kynette, P. #9 | 9,520 | 31102010 |
| 372874 | May 2, 1990 | May 2, 1990 | Mobil Producing TX. & N.M. Inc. | Andrews | U-Tex #36989 #3 | 12,640 | 00310119 |
| 372775 | May 2, 1990 | May 2, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | Traylor, C.S. #1 | 10,000 | 23930736 |
| 372749 | May 1, 1990 | May 1, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch 'A' #403 | 6,303 | 23902750 |
| 372660 | Apr 30, 1990 | Apr 30, 1990 | Mobil Producing TX. & N.M. Inc. | Montgomery | Lake Creek Unit #47 | 10,400 | 33930846 |
| 372660Amendment | Apr 30, 1990 | Apr 30, 1990 | Mobil Producing TX. & N.M. Inc. | Montgomery | Lake Creek Unit #47 | 10,400 | 33930846 |
| 371276 | Apr 27, 1990 | Apr 27, 1990 | Mobil Producing TX. & N.M. Inc. | Brooks | La Gloria Gas Unit #95 | 9,598 | 04700070 |
| 372607 | Apr 26, 1990 | Apr 26, 1990 | Mobil Producing TX. & N.M. Inc. | Crane | University Waddell Devonian Unit #413 | 9,335 | 10303649 |
| 372479 | Apr 26, 1990 | Apr 26, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #524 | 5,000 | 07932488 |
| 372477 | Apr 26, 1990 | Apr 26, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #525 | 5,000 | 07932487 |
| 372472 | Apr 26, 1990 | Apr 26, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #526 | 5,000 | 07932486 |
| 372465 | Apr 26, 1990 | Apr 26, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #533 | 5,000 | 07932479 |
| 372464 | Apr 26, 1990 | Apr 26, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #534 | 5,000 | 07932478 |
| 372461 | Apr 26, 1990 | Apr 26, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #519 | 5,000 | 21935570 |
| 372460 | Apr 26, 1990 | Apr 26, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #520 | 5,000 | 21935571 |
| 372459 | Apr 26, 1990 | Apr 26, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #521 | 5,000 | 21935572 |
| 372441 | Apr 26, 1990 | Apr 26, 1990 | Mobil Producing TX. & N.M. Inc. | Hidalgo | Johnson, F. I. #46F | 8,500 | 21531460 |
| 372441Amendment | Apr 26, 1990 | Apr 26, 1990 | Mobil Producing TX. & N.M. Inc. | Hidalgo | Johnson, F. I. #46D | 8,500 | 21531460 |
| 372580 | Apr 25, 1990 | Apr 25, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch 'A' #53 | 7,500 | 23902408 |