| 507350 | Apr 5, 2001 | Apr 5, 2001 | Occidental Permian Ltd. | Hockley | Sundown Unit #8321936570 | 5,400 |
| 507349 | Apr 5, 2001 | Apr 5, 2001 | Occidental Permian Ltd. | Hockley | East RKM Unit #8921936574 | 5,400 |
| 507305 | Apr 5, 2001 | Apr 5, 2001 | Occidental Permian Ltd. | Yoakum | Central Ownby Unit #110750134563 | 7,500 |
| 507304 | Apr 5, 2001 | Apr 5, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #6448GC16535726 | 5,600 |
| 507304Amendment | Apr 5, 2001 | Apr 5, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #6448GC16535726 | 5,600 |
| 507303 | Apr 5, 2001 | Apr 5, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #465050134564 | 5,600 |
| 507302 | Apr 5, 2001 | Apr 5, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #665416535725 | 5,600 |
| 507301 | Apr 5, 2001 | Apr 5, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #665516535724 | 5,600 |
| 507300 | Apr 5, 2001 | Apr 5, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #677016535723 | 5,600 |
| 507299 | Apr 5, 2001 | Apr 5, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #677116535722 | 5,600 |
| 507298 | Apr 4, 2001 | Apr 4, 2001 | Occidental Permian Ltd. | Hale | Anton-Irish Clearfork Unit #54518930436 | 6,500 |
| 507148 | Mar 29, 2001 | Mar 29, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #153913538052 | 4,800 |
| 506223 | Mar 28, 2001 | Mar 28, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #764716535710 | 5,600 |
| 507053 | Mar 27, 2001 | Mar 27, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #153413538051 | 4,800 |
| 507052 | Mar 27, 2001 | Mar 27, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #153113538050 | 4,800 |
| 507051 | Mar 27, 2001 | Mar 27, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #152913538049 | 4,800 |
| 507050 | Mar 27, 2001 | Mar 27, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #152813538048 | 4,800 |
| 506679 | Mar 22, 2001 | Mar 22, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #254950134562 | 5,600 |
| 506678 | Mar 22, 2001 | Mar 22, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #7568GC16535715 | 5,600 |
| 506677 | Mar 22, 2001 | Mar 22, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #7444GC16535714 | 5,600 |
| 506676 | Mar 22, 2001 | Mar 22, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #465250134561 | 5,600 |
| 506675 | Mar 22, 2001 | Mar 22, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #465150134560 | 5,600 |
| 506673 | Mar 22, 2001 | Mar 22, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #464650134559 | 5,600 |
| 506731 | Mar 20, 2001 | Mar 20, 2001 | Occidental Permian Ltd. | Gaines | Robertson SA Unit #31216535720 | 4,900 |
| 506730 | Mar 20, 2001 | Mar 20, 2001 | Occidental Permian Ltd. | Gaines | Robertson SA Unit #21216535719 | 4,900 |
| 506729 | Mar 20, 2001 | Mar 20, 2001 | Occidental Permian Ltd. | Gaines | Robertson SA Unit #19116535718 | 4,900 |
| 506728 | Mar 20, 2001 | Mar 20, 2001 | Occidental Permian Ltd. | Gaines | Robertson SA Unit #10216535717 | 4,900 |
| 506672 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #355650134554 | 5,600 |
| 506672Amendment | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #355650134554 | 5,600 |
| 506597 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #4339GC50134558 | 5,600 |
| 506596 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #365150134557 | 5,600 |
| 506595 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #355750134556 | 5,600 |
| 506594 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #355450134555 | 5,600 |
| 506592 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #265350134553 | 5,600 |
| 506591 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #265250134552 | 5,600 |
| 506590 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #264850134551 | 5,600 |
| 506589 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #264750134550 | 5,600 |
| 506588 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #254850134549 | 5,600 |
| 506587 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Central Ownby Unit #250350134548 | 7,500 |
| 506586 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Central Ownby Unit #170550134547 | 7,500 |
| 506585 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Central Ownby Unit #150850134546 | 7,500 |
| 506584 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Central Ownby Unit #110250134545 | 7,500 |
| 506583 | Mar 19, 2001 | Mar 19, 2001 | Occidental Permian Ltd. | Yoakum | Central Ownby Unit #70550134544 | 7,500 |
| 506502 | Mar 14, 2001 | Mar 14, 2001 | Occidental Permian Ltd. | Crockett | Daniel, M. K. 112A #9A10538587 | 6,500 |
| 506227 | Mar 14, 2001 | Mar 14, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #4447GC50134543 | 5,600 |
| 506227Amendment | Mar 14, 2001 | Mar 14, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #4447GC50134543 | 5,600 |
| 506411 | Mar 13, 2001 | Mar 13, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #153813538041 | 4,800 |
| 506410 | Mar 13, 2001 | Mar 13, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #153713538040 | 4,800 |
| 506409 | Mar 13, 2001 | Mar 13, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #153613538039 | 4,800 |
| 506408 | Mar 13, 2001 | Mar 13, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #153513538038 | 4,800 |
| 506407 | Mar 13, 2001 | Mar 13, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #152113538037 | 4,800 |
| 506406 | Mar 13, 2001 | Mar 13, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #49913520206 | 4,800 |
| 506226 | Mar 13, 2001 | Mar 13, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #764416535713 | 5,600 |
| 506226Amendment | Mar 13, 2001 | Mar 13, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #764416535713 | 5,600 |
| 506225 | Mar 13, 2001 | Mar 13, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #764516535712 | 5,600 |
| 506224 | Mar 13, 2001 | Mar 13, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #764616535711 | 5,600 |
| 506222 | Mar 13, 2001 | Mar 13, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #8433GC16535709 | 5,600 |
| 506325 | Mar 12, 2001 | Mar 12, 2001 | Occidental Permian Ltd. | Ector | Witcher, J. E. #11713538035 | 4,600 |
| 506324 | Mar 12, 2001 | Mar 12, 2001 | Occidental Permian Ltd. | Ector | Witcher, J. E. #11613538031 | 4,600 |
| 506323 | Mar 12, 2001 | Mar 12, 2001 | Occidental Permian Ltd. | Ector | Witcher, J. E. #11413538034 | 4,600 |
| 506322 | Mar 12, 2001 | Mar 12, 2001 | Occidental Permian Ltd. | Ector | Witcher, J. E. #11213538033 | 4,600 |
| 506321 | Mar 12, 2001 | Mar 12, 2001 | Occidental Permian Ltd. | Ector | Witcher, J. E. #11013538032 | 4,600 |
| 506320 | Mar 12, 2001 | Mar 12, 2001 | Occidental Permian Ltd. | Ector | Witcher, J. E. A #1613538036 | 4,600 |
| 506121 | Mar 8, 2001 | Mar 8, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #772116535707 | 5,600 |
| 506120 | Mar 8, 2001 | Mar 8, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #365850134542 | 5,600 |
| 506119 | Mar 8, 2001 | Mar 8, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #464850134541 | 5,600 |
| 506118 | Mar 8, 2001 | Mar 8, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #656416535706 | 5,600 |
| 506117 | Mar 8, 2001 | Mar 8, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #665216535705 | 5,600 |
| 506116 | Mar 8, 2001 | Mar 8, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #677516535704 | 5,600 |
| 506115 | Mar 8, 2001 | Mar 8, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #764116535703 | 5,600 |
| 506114 | Mar 8, 2001 | Mar 8, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #764216535702 | 5,600 |
| 506113 | Mar 8, 2001 | Mar 8, 2001 | Occidental Permian Ltd. | Gaines | Denver Unit #764316535701 | 5,600 |
| 506103 | Mar 6, 2001 | Mar 6, 2001 | Occidental Permian Ltd. | Ector | Goldsmith Landreth Deep Unit #34213538029 | 6,500 |
| 506102 | Mar 6, 2001 | Mar 6, 2001 | Occidental Permian Ltd. | Ector | Goldsmith Landreth Deep Unit #34113538028 | 6,500 |
| 506101 | Mar 6, 2001 | Mar 6, 2001 | Occidental Permian Ltd. | Ector | Goldsmith Landreth Deep Unit #33613538027 | 6,500 |
| 506100 | Mar 6, 2001 | Mar 6, 2001 | Occidental Permian Ltd. | Ector | Goldsmith Landreth Deep Unit #32113538026 | 6,500 |
| 506099 | Mar 6, 2001 | Mar 6, 2001 | Occidental Permian Ltd. | Ector | Goldsmith Landreth Deep Unit #32013538025 | 6,500 |
| 505946 | Mar 2, 2001 | Mar 2, 2001 | Occidental Permian Ltd. | Hale | Anton-Irish Clearfork Unit #54418930435 | 6,500 |
| 505945 | Mar 2, 2001 | Mar 2, 2001 | Occidental Permian Ltd. | Hale | Anton-Irish Clearfork Unit #54318930434 | 6,500 |
| 505944 | Mar 2, 2001 | Mar 2, 2001 | Occidental Permian Ltd. | Hale | Snead #118930432 | 7,500 |
| 505943 | Mar 2, 2001 | Mar 2, 2001 | Occidental Permian Ltd. | Hale | Anton-Irish Clearfork Unit #54218930433 | 6,500 |
| 505948 | Mar 1, 2001 | Mar 1, 2001 | Occidental Permian Ltd. | Andrews | Midland Farms Unit #145H00305827 | 4,900 |
| 505908 | Feb 28, 2001 | Feb 28, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #152513538023 | 4,800 |
| 505907 | Feb 28, 2001 | Feb 28, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #151413538019 | 4,800 |
| 505906 | Feb 28, 2001 | Feb 28, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #151613538020 | 4,800 |
| 505905 | Feb 28, 2001 | Feb 28, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #152013538021 | 4,800 |
| 505904 | Feb 28, 2001 | Feb 28, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #151113538022 | 4,800 |
| 505847 | Feb 27, 2001 | Feb 27, 2001 | Occidental Permian Ltd. | Ector | Witcher, J. E. PB #2713538018 | 4,600 |
| 505845 | Feb 27, 2001 | Feb 27, 2001 | Occidental Permian Ltd. | Ector | Witcher, J. E. PB #2613538017 | 4,600 |
| 505355 | Feb 22, 2001 | Feb 22, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #365450134524 | 5,600 |
| 505354 | Feb 22, 2001 | Feb 22, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #365550134523 | 5,600 |
| 505353 | Feb 22, 2001 | Feb 22, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #365650134522 | 5,600 |
| 505352 | Feb 22, 2001 | Feb 22, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #365750134521 | 5,600 |
| 505351 | Feb 22, 2001 | Feb 22, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #464750134520 | 5,600 |
| 505350 | Feb 22, 2001 | Feb 22, 2001 | Occidental Permian Ltd. | Yoakum | Denver Unit #464950134519 | 5,600 |
| 505115 | Feb 20, 2001 | Feb 20, 2001 | Occidental Permian Ltd. | Gaines | Collett, Eugenia #1316535693 | 5,000 |
| 505115Amendment | Feb 20, 2001 | Feb 20, 2001 | Occidental Permian Ltd. | Gaines | Collett, Eugenia #1316535693 | 5,000 |
| 505420 | Feb 16, 2001 | Feb 16, 2001 | Occidental Permian Ltd. | Ector | North Cowden Unit #622H13530889 | 4,800 |
| 505418 | Feb 16, 2001 | Feb 16, 2001 | Occidental Permian Ltd. | Ector | Witcher, J. E. PB #2813538004 | 4,600 |
| 505334 | Feb 15, 2001 | Feb 15, 2001 | Occidental Permian Ltd. | Ector | Witcher, J. E. A #1813537982 | 4,600 |