| 383132 | Jan 15, 1991 | Jan 15, 1991 | Cabot Petroleum Corporation | Gray | Kirby "D" #1 | 2,880 | 17904137 |
| 355787 | Feb 7, 1989 | Feb 7, 1989 | Cabot Petroleum Corporation | Carson | Montgomery #2113 | 4,000 | 06531844 |
| 354933 | Jan 10, 1989 | Jan 10, 1989 | Cabot Petroleum Corporation | Starr | Villarreal #28 | 8,242 | 42700408 |
| 353705 | Nov 28, 1988 | Nov 28, 1988 | Cabot Petroleum Corporation | Brooks | Marshall Bros. #7 | 6,850 | 04731536 |
| 353605 | Nov 28, 1988 | Nov 28, 1988 | Cabot Petroleum Corporation | Brooks | Marshall Brothers #4 | 6,708 | 04701642 |
| 349976 | Aug 10, 1988 | Aug 10, 1988 | Cabot Petroleum Corporation | Rains | Cabot-Smith et Al #1 | 11,700 | 37930135 |
| 349654 | Aug 5, 1988 | Aug 5, 1988 | Cabot Petroleum Corporation | Starr | Garcia, Jose G. Dr. #A 6 | 6,750 | 42700430 |
| 349799 | Aug 4, 1988 | Aug 4, 1988 | Cabot Petroleum Corporation | Freestone | Cabot-Ora Blair et Al #1 | 8,300 | 16131083 |
| 349636 | Aug 4, 1988 | Aug 4, 1988 | Cabot Petroleum Corporation | Starr | Garcia, Jose G. Dr. #A 7 | 6,750 | 42700431 |
| 349622 | Aug 3, 1988 | Aug 3, 1988 | Cabot Petroleum Corporation | Starr | Garcia, Jose G. Dr. #A8 | 8,150 | 42704715 |
| 349226 | Jul 29, 1988 | Jul 29, 1988 | Cabot Petroleum Corporation | Starr | FNB of Mission #8 | 6,490 | 42700418 |
| 349349 | Jul 27, 1988 | Jul 27, 1988 | Cabot Petroleum Corporation | Starr | First National Bank of Mission #2 | 6,444 | 42700412 |
| 349294 | Jul 27, 1988 | Jul 27, 1988 | Cabot Petroleum Corporation | Starr | Garcia, Dr. J. #5 | 6,970 | 42704412 |
| 347197 | Jul 5, 1988 | Jul 5, 1988 | Cabot Petroleum Corporation | Starr | Villarreal #20L | 7,705 | 42700305 |
| 347113 | May 27, 1988 | May 27, 1988 | Cabot Petroleum Corporation | Anderson | Allaun, C. L. et Al #1 | 9,800 | 00131852 |
| 344829 | May 4, 1988 | May 4, 1988 | Cabot Petroleum Corporation | Starr | Villarreal #13 | 6,700 | 42700397 |
| 345830 | May 2, 1988 | May 2, 1988 | Cabot Petroleum Corporation | Starr | Villarreal #19 | 6,500 | 42700304 |
| 345678 | Apr 27, 1988 | Apr 27, 1988 | Cabot Petroleum Corporation | Starr | Villarreal #23 | 6,481 | 42700404 |
| 345252 | Apr 22, 1988 | Apr 22, 1988 | Cabot Petroleum Corporation | Parker | Spinler et al, Gas Unit #1 | 5,353 | 36732974 |
| 345348 | Apr 20, 1988 | Apr 20, 1988 | Cabot Petroleum Corporation | Starr | Villarreal #21 | 6,712 | 42700402 |
| 345349 | Apr 19, 1988 | Apr 19, 1988 | Cabot Petroleum Corporation | Starr | Villarreal #22 | 6,480 | 42700403 |
| 345081 | Apr 14, 1988 | Apr 14, 1988 | Cabot Petroleum Corporation | Brooks | Wright, Cabot W. P. et Al #1 | 9,600 | 04731523 |
| 344478 | Mar 30, 1988 | Mar 30, 1988 | Cabot Petroleum Corporation | Starr | Villarreal #11 | 6,445 | 42700395 |
| 334772 | Aug 24, 1987 | Aug 24, 1987 | Cabot Petroleum Corporation | Andrews | University 'L' #1 | 8,837 | 00320240 |
| 333094 | Jul 20, 1987 | Jul 20, 1987 | Cabot Petroleum Corporation | Smith | Cabot Rozell et Al #1 | 8,200 | 42331117 |
| 332802 | Jul 14, 1987 | Jul 14, 1987 | Cabot Petroleum Corporation | Hutchinson | Meadows #3 | 3,485 | 23332176 |
| 326976 | Feb 26, 1987 | Feb 26, 1987 | Cabot Petroleum Corporation | Andrews | University 'L' #2 | 8,605 | 00320102 |
| 326393 | Feb 12, 1987 | Feb 12, 1987 | Cabot Petroleum Corporation | Starr | Villarreal #30 | 7,400 | 42700307 |
| 325782 | Jan 26, 1987 | Jan 26, 1987 | Cabot Petroleum Corporation | Henderson | Cabot-Fitzgerald et Al #1 | 8,200 | 21330585 |
| 324388 | Jan 20, 1987 | Jan 20, 1987 | Cabot Petroleum Corporation | Starr | Villarreal #27 | 7,090 | 42700407 |
| 323998 | Dec 8, 1986 | Dec 8, 1986 | Cabot Petroleum Corporation | Jim Hogg | Palitos Blancos #A 1 | 10,000 | 24731762 |
| 322258 | Oct 24, 1986 | Oct 24, 1986 | Cabot Petroleum Corporation | Jim Hogg | Mestena #J 12 | 9,800 | 24731756 |
| 303877 | Jul 8, 1986 | Jul 8, 1986 | Cabot Petroleum Corporation | Hidalgo | Engleman Community "A" #4 | 8,450 | 21501802 |
| 303877Amendment | Jul 8, 1986 | Jul 8, 1986 | Cabot Petroleum Corporation | Hidalgo | Engleman Community "A" #4 | 8,450 | 21501802 |
| 302889 | Jun 4, 1986 | Jun 4, 1986 | Cabot Petroleum Corporation | Jim Hogg | Mestena Oil & Gas Company #J11 | 10,000 | 24731730 |
| 300702 | Apr 8, 1986 | Apr 8, 1986 | Cabot Petroleum Corporation | Hidalgo | Engleman Community "A" #4 | 8,450 | 21501802 |
| 295213 | Jan 14, 1986 | Jan 14, 1986 | Cabot Petroleum Corporation | Starr | Degutierrez, Olivia #1 | 8,152 | 42700433 |
| 294286 | Jan 3, 1986 | Jan 3, 1986 | Cabot Petroleum Corporation | Parker | Spinler et al, Gas Unit #1 | 5,353 | 36732974 |
| 292431 | Dec 10, 1985 | Dec 10, 1985 | Cabot Petroleum Corporation | Roberts | Christie, C. B. #1 | 7,700 | 39331077 |
| 286634 | Oct 1, 1985 | Oct 1, 1985 | Cabot Petroleum Corporation | Dimmit | Tumlinson #14 | 4,900 | 12732713 |
| 284209 | Sep 6, 1985 | Sep 6, 1985 | Cabot Petroleum Corporation | Palo Pinto | Cabot-Hendricks #1 | 5,000 | 36333633 |
| 284081 | Sep 5, 1985 | Sep 5, 1985 | Cabot Petroleum Corporation | Dimmit | Tumlinson-Park Unit No. 1 #1 | 4,900 | 12732699 |
| 283819 | Aug 27, 1985 | Aug 27, 1985 | Cabot Petroleum Corporation | Hutchinson | Meadows #3 | 6,800 | 23332176 |
| 281766 | Aug 1, 1985 | Aug 1, 1985 | Cabot Petroleum Corporation | Dimmit | Tumlinson - Coffield Unit No. 1 #1 | 4,900 | 12732689 |
| 281773 | Aug 1, 1985 | Aug 1, 1985 | Cabot Petroleum Corporation | Dimmit | Tumlinson Unit No. 8 #2 | 4,900 | 12732690 |
| 281076 | Jul 24, 1985 | Jul 24, 1985 | Cabot Petroleum Corporation | Dimmit | Tumlinson Unit #A3 | 4,900 | 12732683 |
| 278194 | Jun 20, 1985 | Jun 20, 1985 | Cabot Petroleum Corporation | Andrews | Cabot University Lands #2015 | 5,000 | 00334990 |
| 278193 | Jun 20, 1985 | Jun 20, 1985 | Cabot Petroleum Corporation | Andrews | Cabot University Lands #3015 | 5,000 | 00334989 |
| 277015 | Jun 6, 1985 | Jun 6, 1985 | Cabot Petroleum Corporation | Andrews | Cabot University Lands #1015B | 5,000 | 00334961 |
| 276506 | May 31, 1985 | May 31, 1985 | Cabot Petroleum Corporation | Hopkins | Magers Unit #1 | 8,800 | 22330396 |
| 275689 | May 22, 1985 | May 22, 1985 | Cabot Petroleum Corporation | Palo Pinto | Cabot-Kramer et Al #2 | 5,000 | 36333584 |
| 273391 | Apr 26, 1985 | Apr 26, 1985 | Cabot Petroleum Corporation | Palo Pinto | Cabot-Kramer et Al #1 | 5,000 | 36333570 |
| 272839 | Apr 18, 1985 | Apr 18, 1985 | Cabot Petroleum Corporation | Gray | Cabot-Sidwell Kirby #5076 | 3,500 | 17931785 |
| 272815 | Apr 18, 1985 | Apr 18, 1985 | Cabot Petroleum Corporation | Carson | Ballard #3045 | 3,600 | 06531845 |
| 272814 | Apr 18, 1985 | Apr 18, 1985 | Cabot Petroleum Corporation | Carson | Montgomery #2113 | 4,000 | 06531844 |
| 271857 | Apr 11, 1985 | Apr 11, 1985 | Cabot Petroleum Corporation | Starr | Garcia, Jose G. #6 | 6,750 | 42700430 |
| 271706 | Apr 8, 1985 | Apr 8, 1985 | Cabot Petroleum Corporation | Gray | Cabot-Sidwell Kirby #2076 | 3,500 | 17931775 |
| 271710 | Apr 8, 1985 | Apr 8, 1985 | Cabot Petroleum Corporation | Gray | Cabot-Sidwell Kirby #3076 | 3,500 | 17931777 |
| 271708 | Apr 8, 1985 | Apr 8, 1985 | Cabot Petroleum Corporation | Gray | Cabot-Sidwell Kirby #4076 | 3,500 | 17931776 |
| 270781 | Mar 28, 1985 | Mar 28, 1985 | Cabot Petroleum Corporation | Gray | Cabot-Sidwell Kirby #4075 | 3,500 | 17931773 |
| 270783 | Mar 28, 1985 | Mar 28, 1985 | Cabot Petroleum Corporation | Gray | Cabot-Sidwell Kirby #5075 | 3,500 | 17931774 |
| 270537 | Mar 25, 1985 | Mar 25, 1985 | Cabot Petroleum Corporation | Gray | Cabot-Sidwell Kirby #3075 | 3,500 | 17931772 |
| 264606 | Jan 18, 1985 | Jan 18, 1985 | Cabot Petroleum Corporation | Palo Pinto | Long, C. B. #1 | 5,500 | 36333520 |
| 264291 | Jan 15, 1985 | Jan 15, 1985 | Cabot Petroleum Corporation | Andrews | Cabot University Lands #1015 | 5,900 | 00334678 |
| 264017 | Jan 11, 1985 | Jan 11, 1985 | Cabot Petroleum Corporation | Starr | Daniel Alvardo Gas Unit I #2 | 8,500 | 42731773 |
| 261463 | Dec 18, 1984 | Dec 18, 1984 | Cabot Petroleum Corporation | Starr | Olivarez, Miguel #3 | 7,517 | 42705012 |
| 261418 | Dec 17, 1984 | Dec 17, 1984 | Cabot Petroleum Corporation | Starr | Pena-Coates Minerals #1 | 6,390 | 42731458 |
| 261097 | Dec 13, 1984 | Dec 13, 1984 | Cabot Petroleum Corporation | Franklin | M. Jennings Unit #1 | 5,000 | 15930374 |
| 260004 | Dec 6, 1984 | Dec 6, 1984 | Cabot Petroleum Corporation | Starr | Olivarez-Dresar "B" #2 | 7,500 | 42731168 |
| 259742 | Dec 5, 1984 | Dec 5, 1984 | Cabot Petroleum Corporation | Dimmit | B. Tumlinson Unit #9 | 4,900 | 12732586 |
| 259712 | Dec 4, 1984 | Dec 4, 1984 | Cabot Petroleum Corporation | Wood | McLaughlin Unit #1 | 9,000 | 49931319 |
| 258742 | Nov 27, 1984 | Nov 27, 1984 | Cabot Petroleum Corporation | Starr | Villareal #3 | 6,445 | 42700387 |
| 256468 | Nov 2, 1984 | Nov 2, 1984 | Cabot Petroleum Corporation | Gray | Cabot-Sidwell Kirby #1076 | 3,500 | 17931735 |
| 256464 | Nov 2, 1984 | Nov 2, 1984 | Cabot Petroleum Corporation | Gray | Cabot-Sidwell Kirby #1075 | 3,500 | 17931733 |
| 256467 | Nov 2, 1984 | Nov 2, 1984 | Cabot Petroleum Corporation | Gray | Cabot-Sidwell Kirby #2075 | 3,500 | 17931734 |
| 252993 | Sep 28, 1984 | Sep 28, 1984 | Cabot Petroleum Corporation | Dimmit | Coffield Unit #2 | 5,000 | 12732558 |
| 252992 | Sep 28, 1984 | Sep 28, 1984 | Cabot Petroleum Corporation | Dimmit | B. Tumlinson Unit #8 | 5,000 | 12732557 |
| 251540 | Sep 17, 1984 | Sep 17, 1984 | Cabot Petroleum Corporation | Erath | Brown, Carroll #1 | 5,000 | 14330808 |
| 251525 | Sep 17, 1984 | Sep 17, 1984 | Cabot Petroleum Corporation | Dimmit | Wuichet Unit #1 | 5,000 | 12732561 |
| 251066 | Sep 10, 1984 | Sep 10, 1984 | Cabot Petroleum Corporation | Starr | Olivia L. Degutierrez, Unit II #2 | 5,950 | 42705011 |
| 250906 | Sep 7, 1984 | Sep 7, 1984 | Cabot Petroleum Corporation | Erath | McAnally-Walton #1 | 5,500 | 14330807 |
| 250905 | Sep 7, 1984 | Sep 7, 1984 | Cabot Petroleum Corporation | Palo Pinto | Alexander, James F. #1 | 5,000 | 36333411 |
| 241035 | Jun 5, 1984 | Jun 5, 1984 | Cabot Petroleum Corporation | Bowie | Ashford, Robert M. Estate #1 | 9,500 | 03730234 |
| 231665 | Mar 8, 1984 | Mar 8, 1984 | Cabot Petroleum Corporation | Sterling | Sellers, Nellie #5 | 8,900 | 43131452 |
| 231044 | Mar 1, 1984 | Mar 1, 1984 | Cabot Petroleum Corporation | Hutchinson | Yake 'C' #14 | 3,200 | 23331860 |
| 231203 | Mar 1, 1984 | Mar 1, 1984 | Cabot Petroleum Corporation | Hutchinson | Yake 'C' #15 | 3,200 | 23331862 |
| 230895 | Feb 29, 1984 | Feb 29, 1984 | Cabot Petroleum Corporation | Fort Bend | Kroesche, Milton et Al #1 | 10,500 | 15731519 |
| 229500 | Feb 14, 1984 | Feb 14, 1984 | Cabot Petroleum Corporation | Roberts | Lowe #1048 | 10,100 | 39331000 |
| 229507 | Feb 14, 1984 | Feb 14, 1984 | Cabot Petroleum Corporation | Hutchinson | Merchant #17 | 3,200 | 23331850 |
| 229508 | Feb 14, 1984 | Feb 14, 1984 | Cabot Petroleum Corporation | Hutchinson | Merchant #16 | 3,200 | 23331851 |
| 223856 | Dec 15, 1983 | Dec 15, 1983 | Cabot Petroleum Corporation | Reagan | Hughes, Zulette #1 | 10,462 | 38300474 |
| 222202 | Dec 1, 1983 | Dec 1, 1983 | Cabot Petroleum Corporation | Fort Bend | Rand, Laverne #1 | 11,000 | 15731498 |
| 221633 | Nov 23, 1983 | Nov 23, 1983 | Cabot Petroleum Corporation | Roberts | Lowe #2049 | 10,000 | 39330985 |
| 201165 | Jul 12, 1983 | Jul 12, 1983 | Cabot Petroleum Corporation | Gray | Kirby #2075 | 2,900 | 17931428 |
| 201164 | Jul 12, 1983 | Jul 12, 1983 | Cabot Petroleum Corporation | Gray | Kirby #3075 | 2,900 | 17931427 |
| 201162 | Jul 12, 1983 | Jul 12, 1983 | Cabot Petroleum Corporation | Gray | Kirby #2076 | 2,900 | 17931426 |
| 200122 | Jul 1, 1983 | Jul 1, 1983 | Cabot Petroleum Corporation | Hutchinson | Yake, Cabot-Faulconer #1004 | 3,200 | 23331611 |
| 200121 | Jul 1, 1983 | Jul 1, 1983 | Cabot Petroleum Corporation | Hutchinson | Yake, Cabot-Faulconer #1104 | 3,200 | 23331610 |
| 199630 | Jun 28, 1983 | Jun 28, 1983 | Cabot Petroleum Corporation | Hutchinson | Yake, Cabot-Faulconer #1204 | 3,200 | 23331608 |
| 199432 | Jun 24, 1983 | Jun 24, 1983 | Cabot Petroleum Corporation | Fort Bend | Ludwig, Albert #1 | 10,500 | 15731466 |