| 509405 | Jun 20, 2001 | Jun 20, 2001 | Cross Timbers Operating Company | Gregg | WSGU1 ( Lacy, E. -15) #15 | 8,500 | 18331478 |
| 509638 | Jun 4, 2001 | Jun 4, 2001 | Cross Timbers Operating Company | Andrews | University Block 9/Penn/Unit #72 | 10,204 | 00300443 |
| 509590 | May 31, 2001 | May 31, 2001 | Cross Timbers Operating Company | Freestone | Cochrum Gas Unit #8 | 13,500 | 16132094 |
| 509272 | May 29, 2001 | May 29, 2001 | Cross Timbers Operating Company | Freestone | McWatters, T. H. #20 | 13,500 | 16132091 |
| 509354 | May 25, 2001 | May 25, 2001 | Cross Timbers Operating Company | Freestone | Gibson #5 | 14,000 | 16132092 |
| 508021 | May 22, 2001 | May 22, 2001 | Cross Timbers Operating Company | Limestone | Lyons Gas Unit No. 1 #10 | 14,000 | 29331406 |
| 509161 | May 21, 2001 | May 21, 2001 | Cross Timbers Operating Company | Freestone | Barnard Gas Unit #2 | 13,500 | 16132089 |
| 508851 | May 14, 2001 | May 14, 2001 | Cross Timbers Operating Company | Andrews | University Block 9/Penn/Unit #73 | 10,023 | 00338566 |
| 508838 | May 11, 2001 | May 11, 2001 | Cross Timbers Operating Company | Andrews | University Deep -N- #10HH | 13,600 | 00310738 |
| 508785 | May 11, 2001 | May 11, 2001 | Cross Timbers Operating Company | Limestone | Standley Gas Unit No. 1 #3 | 14,000 | 29331412 |
| 508784 | May 11, 2001 | May 11, 2001 | Cross Timbers Operating Company | Limestone | Gibson #4 | 14,000 | 29331413 |
| 508542 | May 4, 2001 | May 4, 2001 | Cross Timbers Operating Company | Andrews | Butler, L. L. #3HH | 12,605 | 00335995 |
| 508308 | May 1, 2001 | May 1, 2001 | Cross Timbers Operating Company | Gregg | WSGU11 (Gray -6) #7 | 12,000 | 18331475 |
| 508192 | Apr 30, 2001 | Apr 30, 2001 | Cross Timbers Operating Company | Gregg | Pine Tree I.S.D. #5 | 12,000 | 18331473 |
| 508234 | Apr 27, 2001 | Apr 27, 2001 | Cross Timbers Operating Company | Freestone | Hall, F. L. #3 | 14,000 | 16132070 |
| 508193 | Apr 26, 2001 | Apr 26, 2001 | Cross Timbers Operating Company | Gregg | WSGU7 (Horton-Dickson -31) #31 | 12,000 | 18331474 |
| 508020 | Apr 24, 2001 | Apr 24, 2001 | Cross Timbers Operating Company | Limestone | Lyons Gas Unit No. 1 #8 | 14,000 | 29331407 |
| 507938 | Apr 20, 2001 | Apr 20, 2001 | Cross Timbers Operating Company | Limestone | Lyons Gas Unit No. 1 #9 | 14,000 | 29331404 |
| 507851 | Apr 19, 2001 | Apr 19, 2001 | Cross Timbers Operating Company | Limestone | Jacoby-Harris Gas Unit No. 1 #2 | 14,000 | 29331401 |
| 507850 | Apr 18, 2001 | Apr 18, 2001 | Cross Timbers Operating Company | Limestone | Triple H Ranch Gas Unit No. 1 #5 | 14,000 | 29331402 |
| 507632 | Apr 13, 2001 | Apr 13, 2001 | Cross Timbers Operating Company | Gregg | WSGU10 (Skipper -B- 1) #1 | 7,400 | 18300155 |
| 507660 | Apr 12, 2001 | Apr 12, 2001 | Cross Timbers Operating Company | Robertson | Duncan Gas Unit No. 2 #2 | 13,600 | 39530663 |
| 507635 | Apr 11, 2001 | Apr 11, 2001 | Cross Timbers Operating Company | Limestone | Jacoby-Harris Gas Unit #1 #1 | 13,378 | 29330135 |
| 507634 | Apr 11, 2001 | Apr 11, 2001 | Cross Timbers Operating Company | Limestone | Phillips Gas Unit "A" #2 | 9,521 | 29331007 |
| 507633 | Apr 11, 2001 | Apr 11, 2001 | Cross Timbers Operating Company | Limestone | Perlitz Gas Unit No. 1 #2 | 9,522 | 29330989 |
| 507423 | Apr 6, 2001 | Apr 6, 2001 | Cross Timbers Operating Company | Robertson | Merryman Gas Unit No. 1 #4 | 13,600 | 39530659 |
| 507422 | Apr 6, 2001 | Apr 6, 2001 | Cross Timbers Operating Company | Robertson | Martin #6 | 13,600 | 39530661 |
| 507421 | Apr 6, 2001 | Apr 6, 2001 | Cross Timbers Operating Company | Robertson | Duncan Gas Unit No. 1 #4 | 13,600 | 39530660 |
| 507219 | Mar 30, 2001 | Mar 30, 2001 | Cross Timbers Operating Company | Terry | Prentice Northeast Unit #523 | 7,315 | 44531961 |
| 507218 | Mar 30, 2001 | Mar 30, 2001 | Cross Timbers Operating Company | Terry | Prentice Northeast Unit #534 | 7,400 | 44531962 |
| 507012 | Mar 28, 2001 | Mar 28, 2001 | Cross Timbers Operating Company | Robertson | Floyd Turner Gas Unit No. 1 #4 | 13,600 | 39530655 |
| 505840 | Mar 28, 2001 | Mar 28, 2001 | Cross Timbers Operating Company | Robertson | Beal Estate #6 | 13,600 | 39530645 |
| 506765 | Mar 26, 2001 | Mar 26, 2001 | Cross Timbers Operating Company | Harrison | Suggs, Margaret #4 | 9,050 | 20331947 |
| 506852 | Mar 23, 2001 | Mar 23, 2001 | Cross Timbers Operating Company | Robertson | Merryman Gas Unit No. 1 #3 | 13,600 | 39530653 |
| 506764 | Mar 23, 2001 | Mar 23, 2001 | Cross Timbers Operating Company | Robertson | Duncan Gas Unit No. 2 #3 | 13,600 | 39530652 |
| 506763 | Mar 23, 2001 | Mar 23, 2001 | Cross Timbers Operating Company | Henderson | Ogu (Pope, F. S. -3) #91 | 10,200 | 21330426 |
| 506712 | Mar 20, 2001 | Mar 20, 2001 | Cross Timbers Operating Company | Terry | Prentice Northeast Unit #547 | 7,300 | 44531958 |
| 506711 | Mar 20, 2001 | Mar 20, 2001 | Cross Timbers Operating Company | Terry | Prentice Northeast Unit #587 | 7,450 | 44531957 |
| 506710 | Mar 20, 2001 | Mar 20, 2001 | Cross Timbers Operating Company | Terry | Prentice Northeast Unit #589 | 7,450 | 44531956 |
| 506709 | Mar 20, 2001 | Mar 20, 2001 | Cross Timbers Operating Company | Terry | Prentice Northeast Unit #646 | 7,400 | 44531955 |
| 506708 | Mar 20, 2001 | Mar 20, 2001 | Cross Timbers Operating Company | Terry | Prentice Northeast Unit #590 | 7,380 | 44531954 |
| 506707 | Mar 20, 2001 | Mar 20, 2001 | Cross Timbers Operating Company | Terry | Prentice Northeast Unit #688 | 7,125 | 44531953 |
| 506706 | Mar 20, 2001 | Mar 20, 2001 | Cross Timbers Operating Company | Terry | Prentice Northeast Unit #724 | 7,300 | 44531952 |
| 506705 | Mar 20, 2001 | Mar 20, 2001 | Cross Timbers Operating Company | Terry | Prentice Northeast Unit #299 | 7,450 | 44531951 |
| 506547 | Mar 16, 2001 | Mar 16, 2001 | Cross Timbers Operating Company | Henderson | Ogu (Mc & Suggett 18-X) #153X | 11,819 | 21330658 |
| 505300 | Mar 15, 2001 | Mar 15, 2001 | Cross Timbers Operating Company | Harrison | Black-Clark #1 | 7,935 | 20330614 |
| 506445 | Mar 14, 2001 | Mar 14, 2001 | Cross Timbers Operating Company | Robertson | Duncan Gas Unit No. 1 #3 | 13,600 | 39530649 |
| 506445Amendment | Mar 14, 2001 | Mar 14, 2001 | Cross Timbers Operating Company | Robertson | Duncan Gas Unit No. 1 #3 | 13,600 | 39530649 |
| 506398 | Mar 13, 2001 | Mar 13, 2001 | Cross Timbers Operating Company | Robertson | Zieglschmid #2 | 13,600 | 39530648 |
| 506221 | Mar 12, 2001 | Mar 12, 2001 | Cross Timbers Operating Company | Henderson | Ogu (Lewis, J. H. A-9) #193 | 11,603 | 21330774 |
| 504955 | Mar 9, 2001 | Mar 9, 2001 | Cross Timbers Operating Company | Gregg | WSGU1 (Lacy, E. -14) #14 | 12,000 | 18331457 |
| 506056 | Mar 6, 2001 | Mar 6, 2001 | Cross Timbers Operating Company | Freestone | Worthy 'A' #2 | 14,000 | 16132035 |
| 506056Amendment | Mar 6, 2001 | Mar 6, 2001 | Cross Timbers Operating Company | Freestone | Worthy 'A' #2 | 14,000 | 16132035 |
| 504797 | Mar 6, 2001 | Mar 6, 2001 | Cross Timbers Operating Company | Gregg | WSGU1 (Lacy, E. -13) #13 | 12,000 | 18331456 |
| 504159 | Mar 6, 2001 | Mar 6, 2001 | Cross Timbers Operating Company | Gregg | WSGU1 (Lacy, E. -12) #12 | 12,000 | 18331452 |
| 505942 | Mar 2, 2001 | Mar 2, 2001 | Cross Timbers Operating Company | Robertson | Lee Martin Gas Unit No. 1 #5 | 13,600 | 39530647 |
| 505889 | Mar 1, 2001 | Mar 1, 2001 | Cross Timbers Operating Company | Robertson | Carter Gas Unit 1 #3 | 13,600 | 39530646 |
| 505839 | Feb 28, 2001 | Feb 28, 2001 | Cross Timbers Operating Company | Robertson | Beal Estate #7 | 13,600 | 39530644 |
| 505823 | Feb 27, 2001 | Feb 27, 2001 | Cross Timbers Operating Company | Andrews | University 9 H #3HH | 11,600 | 00338589 |
| 505299 | Feb 16, 2001 | Feb 16, 2001 | Cross Timbers Operating Company | Gregg | Wscgu (Horton-Dickson) #529 | 12,000 | 18331459 |
| 505331 | Feb 15, 2001 | Feb 15, 2001 | Cross Timbers Operating Company | Andrews | State University -At- #3HH | 11,813 | 00302972 |
| 503804 | Feb 12, 2001 | Feb 12, 2001 | Cross Timbers Operating Company | Robertson | Mitchell Unit III #9 | 13,600 | 39530631 |
| 503717 | Feb 12, 2001 | Feb 12, 2001 | Cross Timbers Operating Company | Robertson | Mitchell Unit III #3 | 12,900 | 39530375 |
| 503660 | Feb 12, 2001 | Feb 12, 2001 | Cross Timbers Operating Company | Robertson | Mitchell Unit II #7 | 13,600 | 39530630 |
| 504160 | Feb 2, 2001 | Feb 2, 2001 | Cross Timbers Operating Company | Robertson | Martin #1 | 13,100 | 39530228 |
| 504663 | Jan 31, 2001 | Jan 31, 2001 | Cross Timbers Operating Company | Freestone | Miller-Hanson #1R | 11,000 | 16131991 |
| 504663Amendment | Jan 31, 2001 | Jan 31, 2001 | Cross Timbers Operating Company | Freestone | Miller-Hanson #1R | 12,000 | 16131991 |
| 504492 | Jan 25, 2001 | Jan 25, 2001 | Cross Timbers Operating Company | Andrews | University "9"C #7HH | 10,455 | 00338281 |
| 504077 | Jan 16, 2001 | Jan 16, 2001 | Cross Timbers Operating Company | Andrews | University "9" -D- #6HH | 12,200 | 00338566 |
| 503938 | Jan 12, 2001 | Jan 12, 2001 | Cross Timbers Operating Company | Robertson | Martin #4 | 13,100 | 39530373 |
| 503659 | Jan 9, 2001 | Jan 9, 2001 | Cross Timbers Operating Company | Robertson | Mitchell Unit III #4 | 13,100 | 39530377 |
| 502699 | Jan 8, 2001 | Jan 8, 2001 | Cross Timbers Operating Company | Robertson | Mitchell, J. H. #1 | 13,200 | 39530237 |
| 502611 | Jan 8, 2001 | Jan 8, 2001 | Cross Timbers Operating Company | Robertson | Mitchell II #5 | 13,200 | 39530385 |
| 502490 | Jan 8, 2001 | Jan 8, 2001 | Cross Timbers Operating Company | Robertson | Mitchell II #1 | 13,147 | 39530272 |
| 503618 | Jan 5, 2001 | Jan 5, 2001 | Cross Timbers Operating Company | Gregg | Wscgu (Robertson) #111 | 12,000 | 18331449 |
| 501952 | Jan 5, 2001 | Jan 5, 2001 | Cross Timbers Operating Company | Andrews | University 198 #8 | 4,850 | 00338694 |
| 503535 | Jan 2, 2001 | Jan 2, 2001 | Cross Timbers Operating Company | Robertson | Mitchell I #10 | 13,600 | 39530629 |
| 503535Amendment | Jan 2, 2001 | Jan 2, 2001 | Cross Timbers Operating Company | Robertson | Mitchell I #10 | 13,600 | 39530629 |
| 503535Amendment | Jan 2, 2001 | Jan 2, 2001 | Cross Timbers Operating Company | Robertson | Mitchell I #10 | 13,600 | 39530629 |
| 502028 | Dec 28, 2000 | Dec 28, 2000 | Cross Timbers Operating Company | Robertson | Mitchell I #2 | 14,000 | 39530344 |
| 503389 | Dec 22, 2000 | Dec 22, 2000 | Cross Timbers Operating Company | Andrews | State University AU #9 | 10,700 | 00338717 |
| 503388 | Dec 22, 2000 | Dec 22, 2000 | Cross Timbers Operating Company | Andrews | Texas N #7 | 10,800 | 00338715 |
| 503387 | Dec 22, 2000 | Dec 22, 2000 | Cross Timbers Operating Company | Andrews | Texas L #7 | 10,700 | 00338716 |
| 503387Amendment | Dec 22, 2000 | Dec 22, 2000 | Cross Timbers Operating Company | Andrews | Texas L #7 | 10,700 | 00338716 |
| 503104 | Dec 20, 2000 | Dec 20, 2000 | Cross Timbers Operating Company | Freestone | McWatters, T. H. #18 | 13,500 | 16131962 |
| 503064 | Dec 20, 2000 | Dec 20, 2000 | Cross Timbers Operating Company | Gregg | Wscgu (Kelly) #205 | 12,000 | 18331446 |
| 502006 | Dec 20, 2000 | Dec 20, 2000 | Cross Timbers Operating Company | Robertson | Mitchell I #6 | 13,400 | 39530392 |
| 501943 | Dec 20, 2000 | Dec 20, 2000 | Cross Timbers Operating Company | Robertson | Mitchell I #3 | 13,390 | 39530360 |
| 503214 | Dec 19, 2000 | Dec 19, 2000 | Cross Timbers Operating Company | Andrews | University Block 9/Wolfcamp/Unit #1CB | 8,847 | 00300686 |
| 502633 | Dec 12, 2000 | Dec 12, 2000 | Cross Timbers Operating Company | Freestone | McWatters, T. H. #17 | 13,500 | 16131954 |
| 501609 | Dec 8, 2000 | Dec 8, 2000 | Cross Timbers Operating Company | Gregg | Pine Tree Independent School #2 | 7,370 | 18300263 |
| 502555 | Dec 4, 2000 | Dec 4, 2000 | Cross Timbers Operating Company | Freestone | Newsome, C. A. Estate #18 | 13,500 | 16131948 |
| 502454 | Dec 1, 2000 | Dec 1, 2000 | Cross Timbers Operating Company | Freestone | Thompson, C. C. #12 | 13,500 | 16131947 |
| 502453 | Dec 1, 2000 | Dec 1, 2000 | Cross Timbers Operating Company | Freestone | Thompson, C. C. #13 | 13,500 | 16131946 |
| 502452 | Dec 1, 2000 | Dec 1, 2000 | Cross Timbers Operating Company | Freestone | Thompson, C. C. #14 | 13,500 | 16131945 |
| 502330 | Dec 1, 2000 | Dec 1, 2000 | Cross Timbers Operating Company | Freestone | Newsom, C. A. Estate #20 | 13,500 | 16131941 |
| 502330Amendment | Dec 1, 2000 | Dec 1, 2000 | Cross Timbers Operating Company | Freestone | Newsom, C. A. Estate #20 | 13,500 | 16131941 |
| 502201 | Nov 30, 2000 | Nov 30, 2000 | Cross Timbers Operating Company | Freestone | Eppes, Fred R. #1 | 11,500 | 16130576 |
| 502198 | Nov 30, 2000 | Nov 30, 2000 | Cross Timbers Operating Company | Gregg | Wscgu (Robertson) #110 | 12,000 | 18331442 |
| 501427 | Nov 30, 2000 | Nov 30, 2000 | Cross Timbers Operating Company | Robertson | Mitchell II #2 | 13,200 | 39530353 |