| 372580Amendment | Apr 25, 1990 | Apr 25, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #53 | 7,500 | 23902408 |
| 372471 | Apr 25, 1990 | Apr 25, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #527 | 5,000 | 07932485 |
| 372470 | Apr 25, 1990 | Apr 25, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #528 | 5,000 | 07932484 |
| 372469 | Apr 25, 1990 | Apr 25, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #529 | 5,000 | 07932483 |
| 372468 | Apr 25, 1990 | Apr 25, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #530 | 5,000 | 07932482 |
| 372467 | Apr 25, 1990 | Apr 25, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #531 | 5,000 | 07932481 |
| 372466 | Apr 25, 1990 | Apr 25, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #532 | 5,000 | 07932480 |
| 372462 | Apr 25, 1990 | Apr 25, 1990 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #518 | 5,000 | 21935569 |
| 372458 | Apr 25, 1990 | Apr 25, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #522 | 5,000 | 07932489 |
| 372457 | Apr 25, 1990 | Apr 25, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #523 | 5,000 | 07932490 |
| 372463 | Apr 24, 1990 | Apr 24, 1990 | Mobil Producing TX. & N.M. Inc. | Cochran | North Central Levelland Unit #100A | 5,000 | 07932477 |
| 372376 | Apr 20, 1990 | Apr 20, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, Arthur A. et Al #7 | 10,000 | 24932149 |
| 372337 | Apr 20, 1990 | Apr 20, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #112 | 5,756 | 23902467 |
| 372260 | Apr 20, 1990 | Apr 20, 1990 | Mobil Producing TX. & N.M. Inc. | Hardin | Nona Mills Field Unit #2501 | 8,150 | 19900499 |
| 371385 | Apr 19, 1990 | Apr 19, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #507 | 6,050 | 23932015 |
| 372188 | Apr 18, 1990 | Apr 18, 1990 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #20 | 8,000 | 47935027 |
| 372257 | Apr 17, 1990 | Apr 17, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #424 | 6,192 | 23902771 |
| 372256 | Apr 17, 1990 | Apr 17, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #523 | 8,555 | 23932368 |
| 372153 | Apr 16, 1990 | Apr 16, 1990 | Mobil Producing TX. & N.M. Inc. | Crane | Universtiy Waddell Devonian Unit #315AW | 9,500 | 10334071 |
| 372152 | Apr 16, 1990 | Apr 16, 1990 | Mobil Producing TX. & N.M. Inc. | Crane | University Waddell Devonian Unit #312AW | 9,500 | 10334070 |
| 372073 | Apr 13, 1990 | Apr 13, 1990 | Mobil Producing TX. & N.M. Inc. | Crane | University Waddell Devonian Unit #326 | 9,500 | 10334067 |
| 372072 | Apr 13, 1990 | Apr 13, 1990 | Mobil Producing TX. & N.M. Inc. | Crane | University Waddell Devonian Unit #208 | 9,500 | 10334066 |
| 372071 | Apr 13, 1990 | Apr 13, 1990 | Mobil Producing TX. & N.M. Inc. | Crane | University Waddell Devonian Unit #327 | 9,500 | 10334068 |
| 371893 | Apr 13, 1990 | Apr 13, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #521 | 8,550 | 23932372 |
| 371997 | Apr 12, 1990 | Apr 12, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #13 | 6,493 | 23902368 |
| 371998 | Apr 11, 1990 | Apr 11, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #509J | 6,360 | 23932134 |
| 371702 | Apr 4, 1990 | Apr 4, 1990 | Mobil Producing TX. & N.M. Inc. | Hardin | Nona Mills Field Unit #806 | 8,610 | 19900516 |
| 371522 | Mar 30, 1990 | Mar 30, 1990 | Mobil Producing TX. & N.M. Inc. | Hidalgo | Hamman, John "B" #10D | 8,763 | 21531461 |
| 371328 | Mar 30, 1990 | Mar 30, 1990 | Mobil Producing TX. & N.M. Inc. | Crane | Sand Hills Tubb Unit #49 | 4,900 | 10333089 |
| 371600 | Mar 29, 1990 | Mar 29, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #344 | 6,349 | 23902691 |
| 371528 | Mar 28, 1990 | Mar 28, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #342 | 6,547 | 23902689 |
| 371528Amendment | Mar 28, 1990 | Mar 28, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #342 | 6,547 | 23902689 |
| 371494 | Mar 28, 1990 | Mar 28, 1990 | Mobil Producing TX. & N.M. Inc. | Angelina | Johnson, Julianne F. #1 | 21,000 | 00530231 |
| 371396 | Mar 28, 1990 | Mar 28, 1990 | Mobil Producing TX. & N.M. Inc. | Mitchell | Foster, Mary #261 | 3,600 | 33533541 |
| 371395 | Mar 28, 1990 | Mar 28, 1990 | Mobil Producing TX. & N.M. Inc. | Mitchell | Foster, Mary #265 | 3,600 | 33533540 |
| 371393 | Mar 28, 1990 | Mar 28, 1990 | Mobil Producing TX. & N.M. Inc. | Mitchell | Foster, Mary #259 | 3,600 | 33533539 |
| 371399 | Mar 27, 1990 | Mar 27, 1990 | Mobil Producing TX. & N.M. Inc. | Mitchell | Foster, Mary #262W | 3,600 | 33533542 |
| 371399Amendment | Mar 27, 1990 | Mar 27, 1990 | Mobil Producing TX. & N.M. Inc. | Mitchell | Foster, Mary #262 | 3,600 | 33533542 |
| 371384 | Mar 26, 1990 | Mar 26, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #171 | 8,250 | 23902526 |
| 371384Amendment | Mar 26, 1990 | Mar 26, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #171 | 7,432 | 23902526 |
| 371383 | Mar 26, 1990 | Mar 26, 1990 | Mobil Producing TX. & N.M. Inc. | Hidalgo | Hamman, John "B" #13F | 9,550 | 21531482 |
| 371329 | Mar 26, 1990 | Mar 26, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | Gordin Estate #30 | 6,665 | 23932248 |
| 371290 | Mar 26, 1990 | Mar 26, 1990 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Pennsylvanian Unit #1721 | 11,000 | 46133020 |
| 371352 | Mar 23, 1990 | Mar 23, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #455 | 5,803 | 23903654 |
| 371351 | Mar 23, 1990 | Mar 23, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | Gordin Estate #7 | 6,310 | 23901756 |
| 371350 | Mar 23, 1990 | Mar 23, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A.A. #84 | 8,600 | 24902797 |
| 371350Amendment | Mar 23, 1990 | Mar 23, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A.A. #84 | 8,600 | 24902797 |
| 371349 | Mar 23, 1990 | Mar 23, 1990 | Mobil Producing TX. & N.M. Inc. | Hidalgo | Hamman, John "B" #21F | 8,650 | 21531640 |
| 371289 | Mar 23, 1990 | Mar 23, 1990 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Pennsylvanian Unit #1720 | 11,000 | 46133021 |
| 371288 | Mar 23, 1990 | Mar 23, 1990 | Mobil Producing TX. & N.M. Inc. | Midland | Pegasus Pennsylvanian Unit #607 | 11,000 | 32932224 |
| 371287 | Mar 23, 1990 | Mar 23, 1990 | Mobil Producing TX. & N.M. Inc. | Midland | Pegasus Pennsylvanian Unit #403 | 11,000 | 32932223 |
| 371286 | Mar 23, 1990 | Mar 23, 1990 | Mobil Producing TX. & N.M. Inc. | Midland | Pegasus Pennsylvanian Unit #303 | 11,000 | 32932222 |
| 371220 | Mar 20, 1990 | Mar 20, 1990 | Mobil Producing TX. & N.M. Inc. | Calhoun | Traylor, Maude B. #4 | 11,425 | 05700301 |
| 370981 | Mar 20, 1990 | Mar 20, 1990 | Mobil Producing TX. & N.M. Inc. | Hidalgo | Bentsen "A" #1D | 10,018 | 21531709 |
| 370816 | Mar 20, 1990 | Mar 20, 1990 | Mobil Producing TX. & N.M. Inc. | Howard | Chalk, Mary #78W | 3,900 | 22734536 |
| 370815 | Mar 20, 1990 | Mar 20, 1990 | Mobil Producing TX. & N.M. Inc. | Howard | Chalk, G.O. #52W | 3,900 | 22734537 |
| 370980 | Mar 15, 1990 | Mar 15, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #413 | 6,499 | 23902760 |
| 370980Amendment | Mar 15, 1990 | Mar 15, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #413 | 6,499 | 23902760 |
| 370716 | Mar 15, 1990 | Mar 15, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A. A. #76 | 7,700 | 24902789 |
| 370716Amendment | Mar 15, 1990 | Mar 15, 1990 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A. A. #76 | 8,000 | 24902789 |
| 370625 | Mar 15, 1990 | Mar 15, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | Gordin Estate #30 | 7,150 | 23932248 |
| 369908 | Mar 15, 1990 | Mar 15, 1990 | Mobil Producing TX. & N.M. Inc. | Crane | Texas University Sec. 1 & 2 #72 | 3,450 | 10334025 |
| 369907 | Mar 15, 1990 | Mar 15, 1990 | Mobil Producing TX. & N.M. Inc. | Crane | Texas University Sec. 1 & 2 #71 | 3,450 | 10334024 |
| 369906 | Mar 15, 1990 | Mar 15, 1990 | Mobil Producing TX. & N.M. Inc. | Crane | Texas University Sec. 1 & 2 #70 | 3,450 | 10334026 |
| 370967 | Mar 14, 1990 | Mar 14, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #G 520 | 6,800 | 26331392 |
| 370966 | Mar 14, 1990 | Mar 14, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #H 48 | 6,800 | 26331393 |
| 370965 | Mar 14, 1990 | Mar 14, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #G 521 | 6,800 | 26331394 |
| 370964 | Mar 14, 1990 | Mar 14, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #C 278 | 6,800 | 26331391 |
| 370963 | Mar 14, 1990 | Mar 14, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #A 330 | 6,800 | 26331389 |
| 370962 | Mar 14, 1990 | Mar 14, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #H 74 | 6,800 | 26331387 |
| 370961 | Mar 14, 1990 | Mar 14, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #A 332 | 6,800 | 26331385 |
| 370960 | Mar 14, 1990 | Mar 14, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #A 331 | 6,800 | 26331384 |
| 370959 | Mar 14, 1990 | Mar 14, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #C 576 | 6,800 | 26331386 |
| 370958 | Mar 14, 1990 | Mar 14, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #G 519 | 6,800 | 26331390 |
| 370957 | Mar 14, 1990 | Mar 14, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #M 52 | 6,800 | 26331388 |
| 370687 | Mar 12, 1990 | Mar 12, 1990 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #5003 | 12,800 | 46133017 |
| 370686 | Mar 12, 1990 | Mar 12, 1990 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #4909 | 12,700 | 46133016 |
| 370685 | Mar 12, 1990 | Mar 12, 1990 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #2522 | 12,400 | 46133018 |
| 370599 | Mar 12, 1990 | Mar 12, 1990 | Mobil Producing TX. & N.M. Inc. | Andrews | Fasken Block "EA" #4 | 11,155 | 00303639 |
| 370600 | Mar 9, 1990 | Mar 9, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Jones, Percy TRT 6-B #1137 | 6,800 | 26331383 |
| 370592 | Mar 9, 1990 | Mar 9, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #H410 | 6,800 | 26331382 |
| 370591 | Mar 9, 1990 | Mar 9, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #F223W | 6,800 | 26331381 |
| 370590 | Mar 9, 1990 | Mar 9, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #H 49 | 6,800 | 26331379 |
| 370589 | Mar 9, 1990 | Mar 9, 1990 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #F224W | 6,800 | 26331380 |
| 369338 | Mar 9, 1990 | Mar 9, 1990 | Mobil Producing TX. & N.M. Inc. | Brooks | La Gloria Gas Unit #113 | 8,800 | 04731573 |
| 369338Amendment | Mar 9, 1990 | Mar 9, 1990 | Mobil Producing TX. & N.M. Inc. | Brooks | La Gloria Gas Unit #113 | 8,800 | 04731573 |
| 369338Amendment | Mar 9, 1990 | Mar 9, 1990 | Mobil Producing TX. & N.M. Inc. | Brooks | La Gloria Gas Unit #113 | 8,800 | 04731573 |
| 369155 | Mar 8, 1990 | Mar 8, 1990 | Mobil Producing TX. & N.M. Inc. | San Patricio | Welder, Minnie S. #67U | 8,415 | 40932021 |
| 370581 | Mar 7, 1990 | Mar 7, 1990 | Mobil Producing TX. & N.M. Inc. | Hidalgo | Hamman, John "B" #12 | 12,198 | 21531507 |
| 370478 | Mar 5, 1990 | Mar 5, 1990 | Mobil Producing TX. & N.M. Inc. | Midland | Pegasus Field Unit #3 #159 | 12,300 | 32932214 |
| 370463 | Mar 5, 1990 | Mar 5, 1990 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #1611 | 12,400 | 46133011 |
| 370462 | Mar 5, 1990 | Mar 5, 1990 | Mobil Producing TX. & N.M. Inc. | Midland | Pegasus Field Unit #3 #812 | 12,250 | 32932217 |
| 370461 | Mar 5, 1990 | Mar 5, 1990 | Mobil Producing TX. & N.M. Inc. | Midland | Pegasus Field Unit #3 #160 | 12,250 | 32932216 |
| 370427 | Mar 5, 1990 | Mar 5, 1990 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #27 | 9,700 | 47935008 |
| 370427Amendment | Mar 5, 1990 | Mar 5, 1990 | Mobil Producing TX. & N.M. Inc. | Webb | South Callaghan Ranch #27 | 9,700 | 47935008 |
| 370479 | Mar 3, 1990 | Mar 3, 1990 | Mobil Producing TX. & N.M. Inc. | Midland | Pegasus Field Unit #3 #158 | 12,300 | 32932215 |
| 370361 | Mar 1, 1990 | Mar 1, 1990 | Mobil Producing TX. & N.M. Inc. | Hidalgo | Hamman, John "B" #18D | 8,600 | 21531497 |
| 370037 | Mar 1, 1990 | Mar 1, 1990 | Mobil Producing TX. & N.M. Inc. | Upton | Powell, Virgil "B" #5W | 11,100 | 46133008 |
| 370037Amendment | Mar 1, 1990 | Mar 1, 1990 | Mobil Producing TX. & N.M. Inc. | Upton | Powell, Virgil "B" #5 | 11,100 | 46133008 |
| 370347 | Feb 27, 1990 | Feb 27, 1990 | Mobil Producing TX. & N.M. Inc. | Jackson | West Ranch "A" #32 | 6,610 | 23902387 |