| 501245 | Oct 26, 2000 | Oct 26, 2000 | OXY USA Inc. | Dora Roberts Ranch Unit #1531 | 4,600 | 32934421 |
| 500328 | Oct 3, 2000 | Oct 3, 2000 | OXY USA Inc. | Dora Roberts Ranch Devonian Unit #2702H | 12,375 | 32934388 |
| 496858 | Jul 5, 2000 | Jul 5, 2000 | OXY USA Inc. | Dora Roberts Ranch Unit #4610 | 11,607 | 32930777 |
| 496857 | Jul 5, 2000 | Jul 5, 2000 | OXY USA Inc. | Dora Roberts Ranch Unit #1507 | 12,908 | 32900414 |
| 496856 | Jul 5, 2000 | Jul 5, 2000 | OXY USA Inc. | Dora Roberts Ranch Unit #4108 | 12,828 | 32900410 |
| 495377 | May 23, 2000 | May 23, 2000 | OXY USA Inc. | Dora Roberts Ranch Unit #1610W | 11,590 | 32910313 |
| 495376 | May 23, 2000 | May 23, 2000 | OXY USA Inc. | Dora Roberts Ranch Unit #1611 | 12,872 | 32900420 |
| 491638 | Feb 2, 2000 | Feb 2, 2000 | OXY USA Inc. | Dora Roberts Ranch Unit #1508 | 10,470 | 32910063 |
| 491637 | Feb 2, 2000 | Feb 2, 2000 | OXY USA Inc. | Dora Roberts Ranch Unit #1004 | 13,015 | 32900413 |
| 489851 | Nov 29, 1999 | Nov 29, 1999 | OXY USA Inc. | Dora Roberts Ranch Devonian Unit #4605H | 11,749 | 32900407 |
| 488184 | Oct 4, 1999 | Oct 4, 1999 | OXY USA Inc. | Dora Roberts Ranch Unit #4506 | 13,318 | 32932804 |
| 480738 | Nov 9, 1998 | Nov 9, 1998 | OXY USA Inc. | Parks #1 | 12,210 | 32900314 |
| 470984 | Dec 8, 1997 | Dec 8, 1997 | OXY USA Inc. | Dora Roberts Ranch Unit #1530W | 4,600 | 32933966 |
| 469929 | Nov 10, 1997 | Nov 10, 1997 | OXY USA Inc. | Dora Roberts Ranch Unit #3001 | 6,500 | 32933942 |
| 469358 | Oct 28, 1997 | Oct 28, 1997 | OXY USA Inc. | Dora Roberts Ranch Unit #4208 | 10,220 | 32900402 |
| 469357 | Oct 28, 1997 | Oct 28, 1997 | OXY USA Inc. | Dora Roberts Ranch Unit #4212 | 10,330 | 32900397 |
| 469356 | Oct 28, 1997 | Oct 28, 1997 | OXY USA Inc. | Dora Roberts Ranch Unit #1702 | 10,500 | 32930793 |
| 468520 | Oct 7, 1997 | Oct 7, 1997 | OXY USA Inc. | Dora Roberts Ranch Unit #804 | 4,600 | 32933926 |
| 466777 | Aug 26, 1997 | Aug 26, 1997 | OXY USA Inc. | Dora Roberts Ranch Unit #414 | 11,610 | 32910028 |
| 466670 | Aug 25, 1997 | Aug 25, 1997 | OXY USA Inc. | Dora Roberts Ranch Unit #4602 | 9,750 | 32900432 |
| 466548 | Aug 22, 1997 | Aug 22, 1997 | OXY USA Inc. | Dora Roberts Ranch Unit #1009W | 4,600 | 32933864 |
| 466547 | Aug 22, 1997 | Aug 22, 1997 | OXY USA Inc. | Dora Roberts Ranch Unit #1528W | 4,600 | 32933865 |
| 466549 | Aug 21, 1997 | Aug 21, 1997 | OXY USA Inc. | Dora Roberts Ranch Unit #1529W | 4,600 | 32933863 |
| 466082 | Aug 11, 1997 | Aug 11, 1997 | OXY USA Inc. | Dora Roberts Ranch Unit #3220 | 4,600 | 32933850 |
| 465248 | Jul 22, 1997 | Jul 22, 1997 | OXY USA Inc. | Dora Roberts Ranch Dev Unit #1701 | 13,218 | 32900308 |
| 465247 | Jul 22, 1997 | Jul 22, 1997 | OXY USA Inc. | Dora Roberts Ranch Unit #408 | 12,810 | 32900505 |
| 464636 | Jul 8, 1997 | Jul 8, 1997 | OXY USA Inc. | Parks #1 | 12,210 | 32900314 |
| 452240 | Sep 4, 1996 | Sep 4, 1996 | OXY USA Inc. | Dora Roberts Ranch Unit #206 | 4,500 | 32933544 |
| 450132 | Jul 8, 1996 | Jul 8, 1996 | OXY USA Inc. | TXL L #1 | 10,250 | 32900299 |
| 448015 | May 13, 1996 | May 13, 1996 | OXY USA Inc. | TXL L #4 | 12,160 | 32900297 |
| 433875 | Mar 17, 1995 | Mar 17, 1995 | OXY USA Inc. | Dora Roberts Ranch Unit #205W | 4,500 | 32933258 |
| 432884 | Feb 13, 1995 | Feb 13, 1995 | OXY USA Inc. | Dora Roberts Ranch Unit #1514 | 4,450 | 32900386 |
| 432268 | Jan 26, 1995 | Jan 26, 1995 | OXY USA Inc. | Dora Roberts Ranch Dev. Unit #4501 | 12,398 | 32900408 |
| 428646 | Sep 29, 1994 | Sep 29, 1994 | OXY USA Inc. | TXL L #2 | 10,450 | 32900295 |
| 425746 | Jul 11, 1994 | Jul 11, 1994 | OXY USA Inc. | Dora Roberts Ranch Unit #4212 | 13,000 | 32900397 |
| 425735 | Jul 11, 1994 | Jul 11, 1994 | OXY USA Inc. | Dora Roberts Ranch Unit #4207 | 12,976 | 32900191 |
| 425220 | Jun 23, 1994 | Jun 23, 1994 | OXY USA Inc. | Dora Roberts Ranch Unit #4105 | 13,079 | 32900418 |
| 425060 | Jun 22, 1994 | Jun 22, 1994 | OXY USA Inc. | Dora Roberts Ranch Dev. Unit #4611 | 12,468 | 32930804 |
| 422693 | Apr 4, 1994 | Apr 4, 1994 | OXY USA Inc. | Dora Roberts Ranch Unit #2801 | 12,695 | 32931438 |
| 422692 | Apr 4, 1994 | Apr 4, 1994 | OXY USA Inc. | Dora Roberts Ranch Unit #4001 | 13,322 | 32900436 |
| 419014 | Dec 6, 1993 | Dec 6, 1993 | OXY USA Inc. | Dora Roberts Ranch Unit #502 | 13,346 | 32900411 |
| 414256 | Jul 28, 1993 | Jul 28, 1993 | OXY USA Inc. | Dora Roberts Ranch Unit #2210 | 13,241 | 32900395 |
| 410229 | Mar 29, 1993 | Mar 29, 1993 | OXY USA Inc. | Dora Roberts Ranch Unit #4506 | 13,300 | 32932804 |
| 410229Amendment | Mar 29, 1993 | Mar 29, 1993 | OXY USA Inc. | Dora Roberts Ranch Unit #4506 | 13,318 | 32932804 |
| 409569 | Mar 9, 1993 | Mar 9, 1993 | OXY USA Inc. | Dora Roberts Ranch Unit #1602 | 13,209 | 32900194 |
| 401324 | Jul 21, 1992 | Jul 21, 1992 | OXY USA Inc. | Dora Roberts Ranch Unit #4214 | 13,378 | 32900433 |
| 399817 | Jun 4, 1992 | Jun 4, 1992 | OXY USA Inc. | Dora Roberts Ranch Dev Unit #907 | 13,341 | 32900385 |
| 399218 | May 13, 1992 | May 13, 1992 | OXY USA Inc. | Roberts, Dora Ranch Unit #2902W | 4,600 | 32932604 |
| 399218Amendment | May 13, 1992 | May 13, 1992 | OXY USA Inc. | Dora Roberts Ranch Unit #2902W | 4,600 | 32932604 |
| 397548 | Mar 17, 1992 | Mar 17, 1992 | OXY USA Inc. | Dora Roberts Ranch Unit #404 | 12,175 | 32910301 |
| 394761 | Dec 12, 1991 | Dec 12, 1991 | OXY USA Inc. | Dora Roberts Ranch Dev Unit #506 | 12,365 | 32910002 |
| 393902 | Nov 18, 1991 | Nov 18, 1991 | OXY USA Inc. | Dora Roberts Ranch Dev Ut. #4205 | 12,861 | 32900419 |
| 392532 | Oct 8, 1991 | Oct 8, 1991 | OXY USA Inc. | Dora Roberts Ranch Unit #4004 | 4,600 | 32932456 |
| 392531 | Oct 8, 1991 | Oct 8, 1991 | OXY USA Inc. | Dora Roberts Ranch Unit #4003 | 4,600 | 32932453 |
| 390092 | Jul 24, 1991 | Jul 24, 1991 | OXY USA Inc. | Dora Roberts Ranch Unit #906 | 12,297 | 32910035 |
| 389052 | Jun 20, 1991 | Jun 20, 1991 | OXY USA Inc. | Dora Roberts Ranch Unit #1514 | 13,292 | 32900386 |
| 388793 | Jun 17, 1991 | Jun 17, 1991 | OXY USA Inc. | Dora Roberts Ranch Devonian Unit #4210 | 11,925 | 32900301 |
| 387675 | May 17, 1991 | May 17, 1991 | OXY USA Inc. | Dora Roberts Ranch Unit #1526W | 4,500 | 32932409 |
| 387676 | May 13, 1991 | May 13, 1991 | OXY USA Inc. | Dora Roberts Ranch Unit #1525W | 4,500 | 32932410 |
| 387673 | May 13, 1991 | May 13, 1991 | OXY USA Inc. | Dora Roberts Ranch Unit #3219W | 4,600 | 32932408 |
| 385472 | Apr 5, 1991 | Apr 5, 1991 | OXY USA Inc. | Dora Roberts Ranch Devonian Unit #409 | 12,164 | 32910021 |
| 385498 | Mar 14, 1991 | Mar 14, 1991 | OXY USA Inc. | Dora Roberts Ranch Devonian Unit #802 | 12,270 | 32900310 |
| 385497 | Mar 14, 1991 | Mar 14, 1991 | OXY USA Inc. | Dora Roberts Ranch Devonian Unit #4106 | 12,278 | 32910013 |
| 371449 | Mar 27, 1990 | Mar 27, 1990 | OXY USA Inc. | Dora Roberts Ranch Unit #1524W | 4,500 | 32932226 |
| 371446 | Mar 27, 1990 | Mar 27, 1990 | OXY USA Inc. | Dora Roberts Ranch Unit #1523W | 4,500 | 32932225 |
| 366456 | Nov 16, 1989 | Nov 16, 1989 | OXY USA Inc. | Dora Roberts Ranch Unit #3216W | 4,500 | 32932187 |
| 366455 | Nov 16, 1989 | Nov 16, 1989 | OXY USA Inc. | Dora Roberts Ranch Unit #3217W | 4,500 | 32932186 |
| 366454 | Nov 16, 1989 | Nov 16, 1989 | OXY USA Inc. | Dora Roberts Ranch Unit #3214W | 4,500 | 32932185 |
| 366453 | Nov 16, 1989 | Nov 16, 1989 | OXY USA Inc. | Dora Roberts Ranch Unit #3215W | 4,500 | 32932184 |
| 366452 | Nov 16, 1989 | Nov 16, 1989 | OXY USA Inc. | Dora Roberts Ranch Unit #3218W | 4,500 | 32932183 |
| 366451 | Nov 16, 1989 | Nov 16, 1989 | OXY USA Inc. | Dora Roberts Ranch Unit #3213W | 4,500 | 32932182 |
| 363161 | Aug 25, 1989 | Aug 25, 1989 | OXY USA Inc. | Dora Roberts Ranch Unit #1502 | 13,190 | 32902056 |
| 357301 | Mar 23, 1989 | Mar 23, 1989 | OXY USA Inc. | Dora Roberts Ranch Unit #1523 | 4,500 | 32932106 |
| 357300 | Mar 23, 1989 | Mar 23, 1989 | OXY USA Inc. | Dora Roberts Ranch Unit #1522 | 4,500 | 32932105 |
| 357259 | Mar 22, 1989 | Mar 22, 1989 | OXY USA Inc. | Dora Roberts Ranch Unit #1521 | 4,500 | 32932104 |
| 357258 | Mar 22, 1989 | Mar 22, 1989 | OXY USA Inc. | Dora Roberts Ranch Unit #1520 | 4,500 | 32932102 |
| 357257 | Mar 22, 1989 | Mar 22, 1989 | OXY USA Inc. | Dora Roberts Ranch Unit #1008 | 4,500 | 32932103 |
| 357257Amendment | Mar 22, 1989 | Mar 22, 1989 | OXY USA Inc. | Dora Roberts Ranch Unit #1008 | 4,500 | 32932103 |
| 357097 | Mar 16, 1989 | Mar 16, 1989 | OXY USA Inc. | Roberts, Dora Ranch Unit #1519 | 4,500 | 32932098 |
| 355721 | Feb 1, 1989 | Feb 1, 1989 | OXY USA Inc. | Parks A #2 | 4,600 | 32932095 |
| 353331 | Nov 15, 1988 | Nov 15, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #1517 | 4,400 | 32932077 |
| 353221 | Nov 14, 1988 | Nov 14, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #1518 | 4,400 | 32932076 |
| 353220 | Nov 14, 1988 | Nov 14, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #1516 | 4,400 | 32932075 |
| 352734 | Oct 31, 1988 | Oct 31, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #2902 | 4,500 | 32932067 |
| 352733 | Oct 28, 1988 | Oct 28, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #3213 | 4,500 | 32932073 |
| 352733Amendment | Oct 28, 1988 | Oct 28, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #3213 | 4,500 | 32932073 |
| 352732 | Oct 28, 1988 | Oct 28, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #3212 | 4,500 | 32932072 |
| 352731 | Oct 28, 1988 | Oct 28, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #3209 | 4,500 | 32932069 |
| 352731Amendment | Oct 28, 1988 | Oct 28, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #3209 | 4,500 | 32932069 |
| 352731Amendment | Oct 28, 1988 | Oct 28, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #3209 | 4,500 | 32932069 |
| 352730 | Oct 28, 1988 | Oct 28, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #2802 | 4,500 | 32932066 |
| 352729 | Oct 28, 1988 | Oct 28, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #3210 | 4,500 | 32932070 |
| 352728 | Oct 28, 1988 | Oct 28, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #3211 | 4,500 | 32932071 |
| 352727 | Oct 28, 1988 | Oct 28, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #3208 | 4,500 | 32932068 |
| 350828 | Sep 7, 1988 | Sep 7, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #1504 | 13,256 | 32900434 |
| 348292 | Jun 28, 1988 | Jun 28, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #3207 | 4,680 | 32932024 |
| 347565 | Jun 10, 1988 | Jun 10, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #3205 | 4,670 | 32932012 |
| 347543 | Jun 10, 1988 | Jun 10, 1988 | OXY USA Inc. | Dora Roberts Ranch Unit #3206 | 4,620 | 32932013 |