| 544502 | Apr 16, 2004 | Apr 16, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B 91H | 3,800 | 37500383 |
| 544459 | Apr 16, 2004 | Apr 16, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #A235H | 3,800 | 37531670 |
| 544452 | Apr 16, 2004 | Apr 16, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #A233H | 3,800 | 37531653 |
| 544452Amendment | Apr 16, 2004 | Apr 16, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #A233H | 3,800 | 37531653 |
| 543980 | Apr 12, 2004 | Apr 12, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #A188 | 3,800 | 37531398 |
| 544243 | Apr 8, 2004 | Apr 8, 2004 | Stallion Energy, Inc. | Bivins-D- #1 | 2,476 | 37500248 |
| 544025 | Apr 8, 2004 | Apr 8, 2004 | Sand River O & E LLC | Bivins River #3028 | 3,300 | 37531699 |
| 543783 | Apr 1, 2004 | Apr 1, 2004 | Huber, J. M., Corporation | Bivins #A 8H | 2,775 | 37500209 |
| 543656 | Mar 25, 2004 | Mar 25, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B138 | 3,800 | 37531697 |
| 543655 | Mar 25, 2004 | Mar 25, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B136 | 3,800 | 37531696 |
| 543655Amendment | Mar 25, 2004 | Mar 25, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B136 | 3,800 | 37531696 |
| 543654 | Mar 25, 2004 | Mar 25, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B133 | 3,800 | 37531695 |
| 543629 | Mar 25, 2004 | Mar 25, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #A244 | 3,800 | 37531693 |
| 543627 | Mar 25, 2004 | Mar 25, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #A240 | 3,800 | 37531694 |
| 543625 | Mar 25, 2004 | Mar 25, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #A239 | 3,800 | 37531692 |
| 543623 | Mar 25, 2004 | Mar 25, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #A238 | 3,800 | 37531691 |
| 543621 | Mar 25, 2004 | Mar 25, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #A236 | 3,800 | 37531690 |
| 543618 | Mar 25, 2004 | Mar 25, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #A237 | 3,800 | 37531689 |
| 543019 | Mar 15, 2004 | Mar 15, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B 79H | 3,600 | 37500153 |
| 542643 | Mar 15, 2004 | Mar 15, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #A 46H | 3,500 | 37531535 |
| 543155 | Mar 12, 2004 | Mar 12, 2004 | Stallion Energy, Inc. | Bivins D #21HH | 3,300 | 37531688 |
| 542959 | Mar 12, 2004 | Mar 12, 2004 | El Paso Natural Gas Co. | Cathodic Protection Groundbed #2 | 600 | 37531687 |
| 543069 | Mar 11, 2004 | Mar 11, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B 19H | 3,800 | 37500210 |
| 542639 | Mar 11, 2004 | Mar 11, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B 98H | 3,500 | 37530139 |
| 542973 | Mar 10, 2004 | Mar 10, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B135 | 3,800 | 37531685 |
| 542973Amendment | Mar 10, 2004 | Mar 10, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B135 | 3,800 | 37531685 |
| 542963 | Mar 10, 2004 | Mar 10, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B134 | 3,800 | 37531684 |
| 542960 | Mar 10, 2004 | Mar 10, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B132 | 3,800 | 37531683 |
| 542474 | Feb 25, 2004 | Feb 25, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B 76 R | 3,362 | 37500022 |
| 542460 | Feb 25, 2004 | Feb 25, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B 75 R | 3,599 | 37500021 |
| 542449 | Feb 24, 2004 | Feb 24, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #53 R | 1,950 | 37530073 |
| 542424 | Feb 24, 2004 | Feb 24, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #42 R | 2,075 | 37530035 |
| 542420 | Feb 24, 2004 | Feb 24, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #38 R | 1,961 | 37530027 |
| 542418 | Feb 24, 2004 | Feb 24, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #36 R | 1,992 | 37530023 |
| 541875 | Feb 11, 2004 | Feb 11, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #A 44H | 3,500 | 37500239 |
| 541293 | Feb 3, 2004 | Feb 3, 2004 | Pioneer Natural Res. USA, Inc. | Warrick #A 10H | 3,600 | 37531539 |
| 541005 | Jan 22, 2004 | Jan 22, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #133 R | 3,500 | 37531680 |
| 541010 | Jan 21, 2004 | Jan 21, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #167R | 3,500 | 37531682 |
| 541009 | Jan 21, 2004 | Jan 21, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #134R | 3,500 | 37531681 |
| 540975 | Jan 21, 2004 | Jan 21, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #132 R | 3,500 | 37531679 |
| 540948 | Jan 21, 2004 | Jan 21, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #131R | 3,500 | 37531678 |
| 540947 | Jan 21, 2004 | Jan 21, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #130R | 3,500 | 37531677 |
| 540920 | Jan 21, 2004 | Jan 21, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #129R | 3,500 | 37531676 |
| 540595 | Jan 13, 2004 | Jan 13, 2004 | Pioneer Natural Res. USA, Inc. | Masterson #B131H | 3,900 | 37531671 |
| 540548 | Jan 9, 2004 | Jan 9, 2004 | Questar Expl. and Prod. Co. | Bivins Ranch #2002 | 3,790 | 37531475 |
| 540463 | Jan 7, 2004 | Jan 7, 2004 | Stallion Energy, Inc. | Bivins D #1HH | 3,100 | 37531675 |
| 540282 | Jan 5, 2004 | Jan 5, 2004 | Pioneer Natural Res. USA, Inc. | Bivins #A205H | 3,600 | 37531480 |
| 540285 | Jan 2, 2004 | Jan 2, 2004 | Stallion Energy, Inc. | Bivens D #17H | 3,300 | 37531415 |
| 540074 | Dec 30, 2003 | Dec 30, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A 81H | 3,600 | 37500112 |
| 539632 | Dec 16, 2003 | Dec 16, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #N 2H | 3,600 | 37531658 |
| 539579 | Dec 12, 2003 | Dec 12, 2003 | Stallion Energy, Inc. | Bivins D #16R | 2,500 | 37531674 |
| 539579Amendment | Dec 12, 2003 | Dec 12, 2003 | Stallion Energy, Inc. | Bivins D #16R | 2,500 | 37531674 |
| 539547 | Dec 12, 2003 | Dec 12, 2003 | Stallion Energy, Inc. | Bivins D #4R | 2,500 | 37531673 |
| 539547Amendment | Dec 12, 2003 | Dec 12, 2003 | Stallion Energy, Inc. | Bivins D #4 R | 2,500 | 37531673 |
| 539506 | Dec 12, 2003 | Dec 12, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A133H | 3,600 | 37500070 |
| 539503 | Dec 12, 2003 | Dec 12, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #B130H | 3,600 | 37531659 |
| 539469 | Dec 12, 2003 | Dec 12, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #B 43H | 3,600 | 37500212 |
| 539463 | Dec 12, 2003 | Dec 12, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #B119H | 3,600 | 37531510 |
| 538998 | Nov 25, 2003 | Nov 25, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #B127H | 3,500 | 37531655 |
| 538992 | Nov 25, 2003 | Nov 25, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #B102H | 3,500 | 37530708 |
| 538941 | Nov 25, 2003 | Nov 25, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A134H | 3,600 | 37500064 |
| 538892 | Nov 25, 2003 | Nov 25, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #38R | 2,400 | 37530021 |
| 538881 | Nov 25, 2003 | Nov 25, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #2R | 2,400 | 37500150 |
| 538883 | Nov 24, 2003 | Nov 24, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #46R | 2,400 | 37530051 |
| 538819 | Nov 20, 2003 | Nov 20, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #33R | 2,400 | 37530001 |
| 538818 | Nov 20, 2003 | Nov 20, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #31R | 2,570 | 37520026 |
| 538769 | Nov 19, 2003 | Nov 19, 2003 | Makoil, Inc. | Indian Creek #M 7 | 2,300 | 37531672 |
| 538711 | Nov 18, 2003 | Nov 18, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #32R | 2,500 | 37530002 |
| 538131 | Nov 4, 2003 | Nov 4, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A132H | 3,600 | 37500219 |
| 538088 | Nov 4, 2003 | Nov 4, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #B129H | 3,500 | 37531656 |
| 537946 | Oct 29, 2003 | Oct 29, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #B 24H | 3,600 | 37500184 |
| 537605 | Oct 21, 2003 | Oct 21, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #B 48H | 3,600 | 37500205 |
| 537598 | Oct 21, 2003 | Oct 21, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A112H | 3,800 | 37500078 |
| 537146 | Oct 8, 2003 | Oct 8, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A235 | 3,600 | 37531670 |
| 537147 | Oct 7, 2003 | Oct 7, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #B131 | 3,600 | 37531671 |
| 536950 | Oct 1, 2003 | Oct 1, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A221H | 3,800 | 37531503 |
| 536933 | Oct 1, 2003 | Oct 1, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #B 27H | 3,800 | 37500176 |
| 536952 | Sep 29, 2003 | Sep 29, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #23R | 2,210 | 37520053 |
| 536466 | Sep 17, 2003 | Sep 17, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A119H | 3,800 | 37500146 |
| 536460 | Sep 16, 2003 | Sep 16, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A128H | 3,800 | 37500076 |
| 535553 | Aug 21, 2003 | Aug 21, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #128R | 2,750 | 37531669 |
| 535552 | Aug 21, 2003 | Aug 21, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #127R | 2,750 | 37531668 |
| 535550 | Aug 21, 2003 | Aug 21, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #126R | 2,700 | 37531667 |
| 535525 | Aug 21, 2003 | Aug 21, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A207H | 3,600 | 37531478 |
| 535520 | Aug 21, 2003 | Aug 21, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A135H | 3,600 | 37500387 |
| 535547 | Aug 20, 2003 | Aug 20, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #125R | 2,700 | 37531666 |
| 535536 | Aug 20, 2003 | Aug 20, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A110H | 3,600 | 37500084 |
| 534994 | Aug 7, 2003 | Aug 7, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #166R | 2,500 | 37531665 |
| 534989 | Aug 7, 2003 | Aug 7, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #165R | 2,500 | 37531664 |
| 534981 | Aug 7, 2003 | Aug 7, 2003 | Pioneer Natural Res. USA, Inc. | Coughlin #A 3H | 3,600 | 37531452 |
| 534972 | Aug 6, 2003 | Aug 6, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A 80H | 3,600 | 37500077 |
| 534888 | Aug 1, 2003 | Aug 1, 2003 | Makoil, Inc. | Indian Creek #M 8 | 2,300 | 37531663 |
| 534798 | Jul 30, 2003 | Jul 30, 2003 | Gould Oil Inc. | Masterson #7213 | 2,350 | 37531662 |
| 534798Amendment | Jul 30, 2003 | Jul 30, 2003 | Gould Oil Inc. | Masterson #7213 | 2,350 | 37531662 |
| 534797 | Jul 30, 2003 | Jul 30, 2003 | Gould Oil Inc. | Masterson #7414 | 2,350 | 37531661 |
| 534617 | Jul 28, 2003 | Jul 28, 2003 | Pioneer Natural Res. USA, Inc. | Bivins #A230H | 3,500 | 37531583 |
| 534549 | Jul 25, 2003 | Jul 25, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #164R | 2,800 | 37531660 |
| 534230 | Jul 16, 2003 | Jul 16, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #B130 | 3,400 | 37531659 |
| 534206 | Jul 16, 2003 | Jul 16, 2003 | Pioneer Natural Res. USA, Inc. | Masterson #J 3H | 3,600 | 37500094 |
| 533801 | Jul 3, 2003 | Jul 3, 2003 | Pioneer Natural Res. USA, Inc. | Crawford #B 5H | 3,600 | 37531534 |