| 503407 | Dec 28, 2000 | Dec 28, 2000 | Burlington Resources Oil&gas Co. | Winkler | Keystone Cattle Company #410 | 8,618 | 49532335 |
| 503406 | Dec 28, 2000 | Dec 28, 2000 | Burlington Resources Oil&gas Co. | Winkler | Keystone Cattle Co #403 | 6,774 | 49532313 |
| 503024 | Dec 14, 2000 | Dec 14, 2000 | Burlington Resources Oil&gas Co. | Sutton | Steen #53 | 5,720 | 43535324 |
| 503023 | Dec 14, 2000 | Dec 14, 2000 | Burlington Resources Oil&gas Co. | Sutton | Steen #52 | 5,750 | 43535322 |
| 503020 | Dec 14, 2000 | Dec 14, 2000 | Burlington Resources Oil&gas Co. | Sutton | Steen #51 | 5,980 | 43535323 |
| 503018 | Dec 14, 2000 | Dec 14, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry "A" #60 | 6,770 | 43535321 |
| 503014 | Dec 14, 2000 | Dec 14, 2000 | Burlington Resources Oil&gas Co. | Sutton | Steen #54 | 5,720 | 43535320 |
| 502975 | Dec 12, 2000 | Dec 12, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry-Halbert Unit #13 | 6,780 | 43535318 |
| 502779 | Dec 7, 2000 | Dec 7, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry-Boyett Unit #8 | 6,400 | 43535314 |
| 502778 | Dec 7, 2000 | Dec 7, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry-Boyett Unit #9 | 6,400 | 43535315 |
| 502777 | Dec 7, 2000 | Dec 7, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry-Boyett Unit #10 | 6,400 | 43535316 |
| 502523 | Dec 1, 2000 | Dec 1, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #51 | 6,900 | 43535310 |
| 502521 | Dec 1, 2000 | Dec 1, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #49 | 6,900 | 43535308 |
| 502520 | Dec 1, 2000 | Dec 1, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #53 | 6,900 | 43535312 |
| 502519 | Dec 1, 2000 | Dec 1, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #52 | 6,900 | 43535311 |
| 502518 | Dec 1, 2000 | Dec 1, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #50 | 6,900 | 43535309 |
| 501622 | Nov 6, 2000 | Nov 6, 2000 | Burlington Resources Oil&gas Co. | Sutton | Steen #46 | 6,020 | 43535279 |
| 501621 | Nov 6, 2000 | Nov 6, 2000 | Burlington Resources Oil&gas Co. | Sutton | Steen #47 | 6,020 | 43535280 |
| 501620 | Nov 6, 2000 | Nov 6, 2000 | Burlington Resources Oil&gas Co. | Sutton | Steen #48 | 6,020 | 43535281 |
| 501619 | Nov 6, 2000 | Nov 6, 2000 | Burlington Resources Oil&gas Co. | Sutton | Steen #49 | 5,770 | 43535282 |
| 501618 | Nov 6, 2000 | Nov 6, 2000 | Burlington Resources Oil&gas Co. | Sutton | Steen #50 | 5,850 | 43535283 |
| 501617 | Nov 6, 2000 | Nov 6, 2000 | Burlington Resources Oil&gas Co. | Sutton | Davis "A" #11 | 6,020 | 43535284 |
| 501510 | Nov 2, 2000 | Nov 2, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #46 | 6,050 | 43535277 |
| 501510Amendment | Nov 2, 2000 | Nov 2, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #46 | 6,050 | 43535277 |
| 501509 | Nov 2, 2000 | Nov 2, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #47 | 6,050 | 43535276 |
| 501508 | Nov 2, 2000 | Nov 2, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry Heirs Unit #5 | 6,860 | 43535278 |
| 501507 | Nov 2, 2000 | Nov 2, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #48 | 6,000 | 43535275 |
| 501445 | Oct 31, 2000 | Oct 31, 2000 | Burlington Resources Oil&gas Co. | Sutton | Barton #13 | 6,720 | 43535274 |
| 501444 | Oct 31, 2000 | Oct 31, 2000 | Burlington Resources Oil&gas Co. | Sutton | Barton #14 | 6,720 | 43535273 |
| 500830 | Oct 26, 2000 | Oct 26, 2000 | Burlington Resources Oil&gas Co. | Loving | El Mar/Delaware/Unit #1223 | 4,564 | 30100392 |
| 501206 | Oct 25, 2000 | Oct 25, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry "A" #58 | 6,660 | 43535268 |
| 501205 | Oct 25, 2000 | Oct 25, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry "A" #59 | 6,820 | 43535269 |
| 498962 | Aug 28, 2000 | Aug 28, 2000 | Burlington Resources Oil&gas Co. | Jim Hogg | Perez, F "C" #4 | 16,000 | 24732163 |
| 498383 | Aug 11, 2000 | Aug 11, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry "A" #53 | 6,700 | 43535225 |
| 498381 | Aug 11, 2000 | Aug 11, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry "A" #52 | 6,600 | 43535224 |
| 498235 | Aug 8, 2000 | Aug 8, 2000 | Burlington Resources Oil&gas Co. | Sutton | Steen #45 | 5,900 | 43535216 |
| 498019 | Aug 3, 2000 | Aug 3, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry-Meckel Unit #9 | 6,300 | 43535206 |
| 497987 | Aug 2, 2000 | Aug 2, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry-Boyette Unit #7 | 6,600 | 43535205 |
| 497837 | Jul 31, 2000 | Jul 31, 2000 | Burlington Resources Oil&gas Co. | Sutton | Barton #12 | 9,700 | 43535197 |
| 497676 | Jul 26, 2000 | Jul 26, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #44 | 6,000 | 43535191 |
| 497675 | Jul 26, 2000 | Jul 26, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #45 | 6,000 | 43535190 |
| 497606 | Jul 25, 2000 | Jul 25, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry-Berger Unit #14 | 6,500 | 43535186 |
| 497606Amendment | Jul 25, 2000 | Jul 25, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry-Berger Unit #14 | 6,500 | 43535186 |
| 497604 | Jul 25, 2000 | Jul 25, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry-Berger Unit #15 | 6,500 | 43535187 |
| 497459 | Jul 21, 2000 | Jul 21, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry "A" #22 | 6,600 | 43535182 |
| 497457 | Jul 21, 2000 | Jul 21, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry "A" #57 | 6,660 | 43535184 |
| 497458 | Jul 19, 2000 | Jul 19, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry "A" #56 | 6,700 | 43535183 |
| 495728 | Jun 1, 2000 | Jun 1, 2000 | Burlington Resources Oil&gas Co. | Edwards | Baker, Roy #3902 | 5,000 | 13731555 |
| 494418 | May 15, 2000 | May 15, 2000 | Burlington Resources Oil&gas Co. | Jim Hogg | Perez, F "D" #2 | 16,000 | 24732153 |
| 494976 | May 11, 2000 | May 11, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry "A" #55 | 6,750 | 43535134 |
| 492253 | Mar 20, 2000 | Mar 20, 2000 | Burlington Resources Oil&gas Co. | Sutton | Ward #50 | 6,660 | 43535084 |
| 493064 | Mar 16, 2000 | Mar 16, 2000 | Burlington Resources Oil&gas Co. | Jasper | Ukena, M. #1 | 13,000 | 24130672 |
| 492742 | Mar 10, 2000 | Mar 10, 2000 | Burlington Resources Oil&gas Co. | Sutton | Berger #25 | 6,450 | 43535090 |
| 492585 | Mar 3, 2000 | Mar 3, 2000 | Burlington Resources Oil&gas Co. | Jim Hogg | Perez, F. "C" #3 | 20,000 | 24732146 |
| 492254 | Feb 18, 2000 | Feb 18, 2000 | Burlington Resources Oil&gas Co. | Sutton | Ward #49 | 6,550 | 43535083 |
| 492046 | Feb 14, 2000 | Feb 14, 2000 | Burlington Resources Oil&gas Co. | Sutton | Davis #13 | 6,130 | 43535082 |
| 492045 | Feb 14, 2000 | Feb 14, 2000 | Burlington Resources Oil&gas Co. | Sutton | Davis #11 | 6,150 | 43535081 |
| 492015 | Feb 11, 2000 | Feb 11, 2000 | Burlington Resources Oil&gas Co. | Sutton | Barton #11 | 6,640 | 43535080 |
| 492014 | Feb 11, 2000 | Feb 11, 2000 | Burlington Resources Oil&gas Co. | Sutton | Barton #10 | 6,700 | 43535079 |
| 491947 | Feb 10, 2000 | Feb 10, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry "A" #51 | 6,740 | 43535078 |
| 491946 | Feb 10, 2000 | Feb 10, 2000 | Burlington Resources Oil&gas Co. | Sutton | Deberry "A" #54 | 6,745 | 43535077 |
| 491925 | Feb 9, 2000 | Feb 9, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #40 | 6,150 | 43535067 |
| 491924 | Feb 9, 2000 | Feb 9, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #43 | 6,290 | 43535068 |
| 491923 | Feb 9, 2000 | Feb 9, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #42 | 6,040 | 43535069 |
| 491922 | Feb 9, 2000 | Feb 9, 2000 | Burlington Resources Oil&gas Co. | Sutton | Meckel #41 | 6,150 | 43535070 |
| 490934 | Jan 13, 2000 | Jan 13, 2000 | Burlington Resources Oil&gas Co. | Jim Hogg | Cantu, Angelita #1 | 18,000 | 24732142 |
| 490934Amendment | Jan 13, 2000 | Jan 13, 2000 | Burlington Resources Oil&gas Co. | Jim Hogg | Cantu, Angelita #1 | 18,000 | 24732142 |
| 490492 | Jan 3, 2000 | Jan 3, 2000 | Burlington Resources Oil&gas Co. | Jim Hogg | Perez, F "D" #1 | 16,000 | 24732141 |
| 490492Amendment | Jan 3, 2000 | Jan 3, 2000 | Burlington Resources Oil&gas Co. | Jim Hogg | Perez, F "D" #1 | 18,000 | 24732141 |
| 490165 | Dec 20, 1999 | Dec 20, 1999 | Burlington Resources Oil&gas Co. | Winkler | Keystone Cattle Company #408 | 7,560 | 49532331 |
| 488914 | Oct 27, 1999 | Oct 27, 1999 | Burlington Resources Oil&gas Co. | Edwards | Baker, Roy #4603 | 5,206 | 13731386 |
| 488914Amendment | Oct 27, 1999 | Oct 27, 1999 | Burlington Resources Oil&gas Co. | Edwards | Baker, Roy #4603 | 4,540 | 13731386 |
| 488779 | Oct 26, 1999 | Oct 26, 1999 | Burlington Resources Oil&gas Co. | Andrews | University -2- #3 | 7,075 | 00334144 |
| 488037 | Sep 29, 1999 | Sep 29, 1999 | Burlington Resources Oil&gas Co. | Jim Hogg | Perez, F. "C" #2 | 16,500 | 24732138 |
| 485573 | Jul 1, 1999 | Jul 1, 1999 | Burlington Resources Oil&gas Co. | Loving | El Mar/Delaware/Unit #2343 | 4,564 | 30100353 |
| 485572 | Jul 1, 1999 | Jul 1, 1999 | Burlington Resources Oil&gas Co. | Loving | El Mar/Delaware/Unit #2323 | 4,588 | 30100345 |
| 484356 | May 6, 1999 | May 6, 1999 | Burlington Resources Oil&gas Co. | Jim Hogg | Perez, F "C" #1 | 16,500 | 24732125 |
| 483698 | Apr 7, 1999 | Apr 7, 1999 | Burlington Resources Oil&gas Co. | Loving | Stone-Cutter #1 | 13,000 | 30131104 |
| 482812 | Feb 18, 1999 | Feb 18, 1999 | Burlington Resources Oil&gas Co. | Jim Hogg | Perez, F. E #1 | 16,500 | 24732123 |
| 482812Amendment | Feb 18, 1999 | Feb 18, 1999 | Burlington Resources Oil&gas Co. | Jim Hogg | Perez, F. E #1 | 16,500 | 24732123 |
| 482670 | Feb 11, 1999 | Feb 11, 1999 | Burlington Resources Oil&gas Co. | Jim Hogg | Perez, F. #1 | 14,650 | 24732104 |
| 480804 | Nov 12, 1998 | Nov 12, 1998 | Burlington Resources Oil&gas Co. | Pecos | Bonanza "14" #1 | 13,200 | 37136873 |
| 480707 | Nov 6, 1998 | Nov 6, 1998 | Burlington Resources Oil&gas Co. | Gaines | Foster #24 | 9,700 | 16535378 |
| 480707Amendment | Nov 6, 1998 | Nov 6, 1998 | Burlington Resources Oil&gas Co. | Gaines | Foster #24 | 9,700 | 16535378 |
| 478525 | Aug 5, 1998 | Aug 5, 1998 | Burlington Resources Oil&gas Co. | Jim Hogg | Perez, E. #1 | 16,000 | 24732115 |
| 478525Amendment | Aug 5, 1998 | Aug 5, 1998 | Burlington Resources Oil&gas Co. | Jim Hogg | Perez, E. #1 | 16,000 | 24732115 |
| 478259 | Jul 24, 1998 | Jul 24, 1998 | Burlington Resources Oil&gas Co. | Loving | Stone-Cutter #1 | 18,500 | 30131104 |
| 478259Amendment | Jul 24, 1998 | Jul 24, 1998 | Burlington Resources Oil&gas Co. | Loving | Stone-Cutter #1H | 18,500 | 30131104 |
| 478259Amendment | Jul 24, 1998 | Jul 24, 1998 | Burlington Resources Oil&gas Co. | Loving | Stone-Cutter #1 | 12,446 | 30131104 |
| 477410 | Jun 24, 1998 | Jun 24, 1998 | Burlington Resources Oil&gas Co. | Sutton | Young #681SHH | 7,000 | 43534860 |
| 477279 | Jun 18, 1998 | Jun 18, 1998 | Burlington Resources Oil&gas Co. | Pecos | Kennedy State "174" #1 | 4,800 | 37136848 |
| 477069 | Jun 11, 1998 | Jun 11, 1998 | Burlington Resources Oil&gas Co. | Andrews | University Gemini "2" #1 | 10,900 | 00338439 |
| 477069Amendment | Jun 11, 1998 | Jun 11, 1998 | Burlington Resources Oil&gas Co. | Andrews | University Gemini "2" #1 | 11,200 | 00338439 |
| 476965 | Jun 8, 1998 | Jun 8, 1998 | Burlington Resources Oil&gas Co. | Upton | McCamey Unit #1088RW | 2,950 | 46133942 |
| 476964 | Jun 8, 1998 | Jun 8, 1998 | Burlington Resources Oil&gas Co. | Upton | McCamey Unit #W410RW | 2,950 | 46133941 |
| 476963 | Jun 8, 1998 | Jun 8, 1998 | Burlington Resources Oil&gas Co. | Upton | McCamey Unit #1070RW | 2,950 | 46133940 |
| 476960 | Jun 8, 1998 | Jun 8, 1998 | Burlington Resources Oil&gas Co. | Upton | McCamey Unit #1060RW | 2,950 | 46133939 |
| 476958 | Jun 8, 1998 | Jun 8, 1998 | Burlington Resources Oil&gas Co. | Upton | McCamey Unit #1022RW | 2,950 | 46133938 |
| 476957 | Jun 8, 1998 | Jun 8, 1998 | Burlington Resources Oil&gas Co. | Upton | McCamey Unit #W427RW | 2,950 | 46133937 |
| 476955 | Jun 8, 1998 | Jun 8, 1998 | Burlington Resources Oil&gas Co. | Upton | McCamey Unit #W425RW | 2,950 | 46133936 |