| 505461 | Feb 20, 2001 | Feb 20, 2001 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #3903 | 13,132 | 46103932 |
| 505348 | Feb 20, 2001 | Feb 20, 2001 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #C052W | 6,668 | 26300376 |
| 505347 | Feb 20, 2001 | Feb 20, 2001 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #C455W | 6,685 | 26331081 |
| 505224 | Feb 15, 2001 | Feb 15, 2001 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Russell, N. L. #7 | 7,750 | 24932063 |
| 504327 | Jan 19, 2001 | Jan 19, 2001 | Mobil Producing TX. & N.M. Inc. | Harris | Kiesling, A. E. & Dixon, T. K. #24 | 5,770 | 20130786 |
| 503840 | Jan 9, 2001 | Jan 9, 2001 | Mobil Producing TX. & N.M. Inc. | Ward | Fortson Gas Unit #3HH | 13,900 | 47534695 |
| 503840Amendment | Jan 9, 2001 | Jan 9, 2001 | Mobil Producing TX. & N.M. Inc. | Ward | Fortson Gas Unit #3HH | 14,300 | 47534695 |
| 503839 | Jan 9, 2001 | Jan 9, 2001 | Mobil Producing TX. & N.M. Inc. | Ward | Lowe, Ralph Estate 77 #2HH | 15,150 | 47534694 |
| 501125 | Dec 13, 2000 | Dec 13, 2000 | Mobil Producing TX. & N.M. Inc. | Midland | Parks Field Unit No. 2 #2312HH | 12,400 | 32931200 |
| 502286 | Nov 22, 2000 | Nov 22, 2000 | Mobil Producing TX. & N.M. Inc. | Ward | Fortson Gas Unit #2HH | 14,725 | 47534682 |
| 501430 | Oct 31, 2000 | Oct 31, 2000 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Seeligson, A. A. #18 | 6,550 | 24902734 |
| 501303 | Oct 26, 2000 | Oct 26, 2000 | Mobil Producing TX. & N.M. Inc. | Ward | Thornton, Tate 79 #1HH | 13,900 | 47534675 |
| 500810 | Oct 16, 2000 | Oct 16, 2000 | Mobil Producing TX. & N.M. Inc. | Cochran | Mallet Unit #1122A | 5,500 | 07932992 |
| 500774 | Oct 13, 2000 | Oct 13, 2000 | Mobil Producing TX. & N.M. Inc. | Hockley | East Mallet Unit #115A | 5,500 | 21936550 |
| 499912 | Sep 21, 2000 | Sep 21, 2000 | Mobil Producing TX. & N.M. Inc. | Midland | Gatlin, Mary #2005HH | 12,300 | 32934371 |
| 499836 | Sep 21, 2000 | Sep 21, 2000 | Mobil Producing TX. & N.M. Inc. | Ward | Pyote Gas Unit No. 7 #2HH | 14,515 | 47534667 |
| 499769 | Sep 21, 2000 | Sep 21, 2000 | Mobil Producing TX. & N.M. Inc. | Ward | University 29 #3HH | 15,500 | 47534666 |
| 499527 | Sep 14, 2000 | Sep 14, 2000 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #4001 | 13,118 | 46103339 |
| 499194 | Sep 14, 2000 | Sep 14, 2000 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #2801 | 13,170 | 46103068 |
| 499365 | Sep 8, 2000 | Sep 8, 2000 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #4401 | 13,200 | 46101859 |
| 499364 | Sep 8, 2000 | Sep 8, 2000 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #2504 | 13,100 | 46103365 |
| 499307 | Sep 8, 2000 | Sep 8, 2000 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #1610 | 13,400 | 46132597 |
| 498659 | Aug 21, 2000 | Aug 21, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #A315AW | 7,300 | 26331675 |
| 498630 | Aug 18, 2000 | Aug 18, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #E047AW | 7,400 | 26331674 |
| 498629 | Aug 18, 2000 | Aug 18, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #E322A | 7,400 | 26331673 |
| 498131 | Aug 10, 2000 | Aug 10, 2000 | Mobil Producing TX. & N.M. Inc. | Gaines | H & J Unit 1 'D' #54 | 7,703 | 16501635 |
| 497582 | Jul 27, 2000 | Jul 27, 2000 | Mobil Producing TX. & N.M. Inc. | Ward | Bluford Thornton 82 #2HH | 14,900 | 47534657 |
| 497449 | Jul 21, 2000 | Jul 21, 2000 | Mobil Producing TX. & N.M. Inc. | Midland | Reed, Haley #3HH | 9,600 | 32934331 |
| 497449Amendment | Jul 21, 2000 | Jul 21, 2000 | Mobil Producing TX. & N.M. Inc. | Midland | Reed, Haley #3HH | 12,300 | 32934331 |
| 497077 | Jul 11, 2000 | Jul 11, 2000 | Mobil Producing TX. & N.M. Inc. | Yoakum | Mahoney, H. O. #82 | 8,300 | 50134448 |
| 497076 | Jul 11, 2000 | Jul 11, 2000 | Mobil Producing TX. & N.M. Inc. | Yoakum | Mahoney, H. O. #81 | 8,300 | 50134447 |
| 496766 | Jun 30, 2000 | Jun 30, 2000 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #4204 | 12,400 | 46103282 |
| 496448 | Jun 22, 2000 | Jun 22, 2000 | Mobil Producing TX. & N.M. Inc. | Ward | Parish #4801HH | 17,900 | 47534648 |
| 491912 | Jun 19, 2000 | Jun 19, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #C767 | 6,850 | 26331313 |
| 495823 | Jun 5, 2000 | Jun 5, 2000 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit 3 #2903 | 12,300 | 46103317 |
| 495823Amendment | Jun 5, 2000 | Jun 5, 2000 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit 3 #2903 | 13,157 | 46103317 |
| 495644 | May 30, 2000 | May 30, 2000 | Mobil Producing TX. & N.M. Inc. | Brooks | Church of the Brethren Unit #9 | 9,700 | 04731896 |
| 495220 | May 18, 2000 | May 18, 2000 | Mobil Producing TX. & N.M. Inc. | Ward | Watson, L. A. "B" #3HH | 15,200 | 47534642 |
| 494067 | Apr 13, 2000 | Apr 13, 2000 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unti 3 #3903 | 12,000 | 46103932 |
| 494067Amendment | Apr 13, 2000 | Apr 13, 2000 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unti 3 #3903 | 13,132 | 46103932 |
| 494001 | Apr 12, 2000 | Apr 12, 2000 | Mobil Producing TX. & N.M. Inc. | Ward | Evans, M. W. #2HH | 14,400 | 47534636 |
| 494001Amendment | Apr 12, 2000 | Apr 12, 2000 | Mobil Producing TX. & N.M. Inc. | Ward | Evans, M. W. #2HH | 14,400 | 47534636 |
| 493889 | Apr 7, 2000 | Apr 7, 2000 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit 3 #1303 | 12,600 | 46103901 |
| 493269 | Mar 20, 2000 | Mar 20, 2000 | Mobil Producing TX. & N.M. Inc. | Ward | Campbell Estate et Al #3HH | 14,400 | 47534631 |
| 491914 | Feb 16, 2000 | Feb 16, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #C 44 | 6,850 | 26300378 |
| 491931 | Feb 15, 2000 | Feb 15, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #C726 | 6,850 | 26300400 |
| 491920 | Feb 15, 2000 | Feb 15, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #H 41 | 6,850 | 26300289 |
| 491919 | Feb 15, 2000 | Feb 15, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #F 25 | 6,850 | 26300254 |
| 491917 | Feb 15, 2000 | Feb 15, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #H 45 | 6,850 | 26330321 |
| 491916 | Feb 15, 2000 | Feb 15, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #H 42 | 6,850 | 26300294 |
| 491913 | Feb 15, 2000 | Feb 15, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #C 55 | 6,850 | 26300379 |
| 491910 | Feb 15, 2000 | Feb 15, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #C724 | 6,850 | 26300398 |
| 491909 | Feb 15, 2000 | Feb 15, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #C721 | 6,850 | 26300395 |
| 491908 | Feb 15, 2000 | Feb 15, 2000 | Mobil Producing TX. & N.M. Inc. | Kent | Salt Creek Field Unit #C447 | 6,850 | 26330794 |
| 492064 | Feb 14, 2000 | Feb 14, 2000 | Mobil Producing TX. & N.M. Inc. | Ward | Pyote Gas Unit 11 #3HH | 14,200 | 47534628 |
| 489848 | Dec 21, 1999 | Dec 21, 1999 | Mobil Producing TX. & N.M. Inc. | Hidalgo | Johnson, F. I. #46D | 7,646 | 21531460 |
| 490058 | Dec 14, 1999 | Dec 14, 1999 | Mobil Producing TX. & N.M. Inc. | Ward | Pathomack 55 #2HH | 14,500 | 47534619 |
| 490020 | Dec 6, 1999 | Dec 6, 1999 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #3902 | 13,136 | 46104020 |
| 489660 | Nov 18, 1999 | Nov 18, 1999 | Mobil Producing TX. & N.M. Inc. | Hockley | Mallet Ranch #1201 | 8,100 | 21936496 |
| 489243 | Nov 10, 1999 | Nov 10, 1999 | Mobil Producing TX. & N.M. Inc. | Midland | Parks Field Unit #2 #1802 | 12,000 | 32900837 |
| 489159 | Nov 4, 1999 | Nov 4, 1999 | Mobil Producing TX. & N.M. Inc. | Ward | Campbell Estate et Al #2HH | 13,750 | 47534618 |
| 489158 | Nov 4, 1999 | Nov 4, 1999 | Mobil Producing TX. & N.M. Inc. | Ward | McDonald, Myrtle #2HH | 13,600 | 47534617 |
| 488841 | Oct 28, 1999 | Oct 28, 1999 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit 3 #1309 | 12,780 | 46103383 |
| 488841Amendment | Oct 28, 1999 | Oct 28, 1999 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit 3 #1309 | 12,500 | 46103383 |
| 488841Amendment | Oct 28, 1999 | Oct 28, 1999 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit 3 #1309 | 13,110 | 46103383 |
| 488840 | Oct 28, 1999 | Oct 28, 1999 | Mobil Producing TX. & N.M. Inc. | Midland | Pegasus Field Unit 3 #116 | 12,780 | 32901039 |
| 488840Amendment | Oct 28, 1999 | Oct 28, 1999 | Mobil Producing TX. & N.M. Inc. | Midland | Pegasus Field Unit 3 #116 | 12,780 | 32901039 |
| 488832 | Oct 25, 1999 | Oct 25, 1999 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit 3 #1308 | 12,780 | 46103382 |
| 488057 | Sep 29, 1999 | Sep 29, 1999 | Mobil Producing TX. & N.M. Inc. | Ward | Watson, L. A. #2HH | 14,500 | 47534615 |
| 487404 | Sep 9, 1999 | Sep 9, 1999 | Mobil Producing TX. & N.M. Inc. | Brooks | La Gloria Gas Unit #38 | 8,010 | 04700080 |
| 486047 | Jul 22, 1999 | Jul 22, 1999 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit 3 #1405HH | 11,550 | 46133364 |
| 486046 | Jul 22, 1999 | Jul 22, 1999 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #2701 | 12,200 | 46103069 |
| 486046Amendment | Jul 22, 1999 | Jul 22, 1999 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #2701 | 13,170 | 46103069 |
| 485869 | Jul 15, 1999 | Jul 15, 1999 | Mobil Producing TX. & N.M. Inc. | Gaines | H&J Sec 457 #10 | 7,000 | 16501658 |
| 485755 | Jul 9, 1999 | Jul 9, 1999 | Mobil Producing TX. & N.M. Inc. | Jim Wells | Stewart-Jones Unit No. 2 #5 | 7,030 | 24932026 |
| 485717 | Jul 8, 1999 | Jul 8, 1999 | Mobil Producing TX. & N.M. Inc. | Webb | Callaghan Ranch #12 | 7,059 | 47934156 |
| 485566 | Jun 30, 1999 | Jun 30, 1999 | Mobil Producing TX. & N.M. Inc. | Pecos | Moore, Wayne #14 | 13,500 | 37110862 |
| 484990 | Jun 4, 1999 | Jun 4, 1999 | Mobil Producing TX. & N.M. Inc. | Brooks | La Gloria Gas Unit #113 | 7,300 | 04731573 |
| 484660 | May 20, 1999 | May 20, 1999 | Mobil Producing TX. & N.M. Inc. | Webb | Callaghan Ranch #28 | 5,510 | 47930919 |
| 484465 | May 14, 1999 | May 14, 1999 | Mobil Producing TX. & N.M. Inc. | Midland | Parks Field Unit 2 #2324HH | 12,500 | 32933366 |
| 484477 | May 12, 1999 | May 12, 1999 | Mobil Producing TX. & N.M. Inc. | Webb | Callaghan Ranch #43 | 5,520 | 47931181 |
| 483859 | Apr 14, 1999 | Apr 14, 1999 | Mobil Producing TX. & N.M. Inc. | Duval | D. C. R. C. #1204 | 9,925 | 13137363 |
| 483666 | Apr 5, 1999 | Apr 5, 1999 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit 3 #2901 | 12,200 | 46103316 |
| 483614 | Mar 31, 1999 | Mar 31, 1999 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit 3 #1316HH | 15,200 | 46133369 |
| 483613 | Mar 31, 1999 | Mar 31, 1999 | Mobil Producing TX. & N.M. Inc. | Ward | Herd Gas Unit #2HH | 13,275 | 47534593 |
| 483613Amendment | Mar 31, 1999 | Mar 31, 1999 | Mobil Producing TX. & N.M. Inc. | Ward | Herd Gas Unit #2HH | 12,788 | 47534593 |
| 483268 | Mar 15, 1999 | Mar 15, 1999 | Mobil Producing TX. & N.M. Inc. | Hockley | North Central Levelland Unit #27AS | 250 | 21936461 |
| 483084 | Mar 4, 1999 | Mar 4, 1999 | Mobil Producing TX. & N.M. Inc. | Webb | Callaghan Ranch #27 | 5,192 | 47930914 |
| 483083 | Mar 4, 1999 | Mar 4, 1999 | Mobil Producing TX. & N.M. Inc. | Webb | Callaghan Ranch #24 | 5,155 | 47930917 |
| 483029 | Mar 2, 1999 | Mar 2, 1999 | Mobil Producing TX. & N.M. Inc. | Lavaca | Gerlich Gas Unit #3X | 15,500 | 28532321 |
| 482940 | Feb 25, 1999 | Feb 25, 1999 | Mobil Producing TX. & N.M. Inc. | Duval | D. C. R. C. #2205 | 9,420 | 13137619 |
| 482854 | Feb 22, 1999 | Feb 22, 1999 | Mobil Producing TX. & N.M. Inc. | Midland | Parks Field Unit #2 #1918 | 11,900 | 32931320 |
| 482854Amendment | Feb 22, 1999 | Feb 22, 1999 | Mobil Producing TX. & N.M. Inc. | Midland | Parks Field Unit #2 #1918HH | 11,900 | 32931320 |
| 482854Amendment | Feb 22, 1999 | Feb 22, 1999 | Mobil Producing TX. & N.M. Inc. | Midland | Parks Field Unit #2 #1918HH | 11,900 | 32931320 |
| 481378 | Feb 19, 1999 | Feb 19, 1999 | Mobil Producing TX. & N.M. Inc. | Lavaca | Monte Von Rosenberg G. U. #1 #11 | 15,500 | 28532670 |
| 482425 | Feb 3, 1999 | Feb 3, 1999 | Mobil Producing TX. & N.M. Inc. | Midland | Parks Field Unit #2 #1917HH | 15,400 | 32931275 |
| 482082 | Jan 19, 1999 | Jan 19, 1999 | Mobil Producing TX. & N.M. Inc. | Upton | Pegasus Field Unit #3 #1719 | 12,020 | 46132372 |
| 481457 | Jan 6, 1999 | Jan 6, 1999 | Mobil Producing TX. & N.M. Inc. | Terrell | Goode Estate C Unit #8HH | 15,000 | 44330794 |
| 481583 | Dec 17, 1998 | Dec 17, 1998 | Mobil Producing TX. & N.M. Inc. | Ward | Pathomack 55 #1HH | 14,500 | 47534586 |
| 481450 | Dec 11, 1998 | Dec 11, 1998 | Mobil Producing TX. & N.M. Inc. | Duval | Mobil Fee #6 | 13,000 | 13138311 |