| 669339 | Sep 9, 2008 | Sep 9, 2008 | Crawford Energy Operating Co | Brazoria | Vieman Unit #1 | 10,300 | 03932948 |
| 663453 | Jun 25, 2008 | Jun 25, 2008 | Crawford Energy Operating Co | Burleson | Wilkins, Mabel #8 | 12,400 | 05133647 |
| 663453Amendment | Jun 25, 2008 | Jun 25, 2008 | Crawford Energy Operating Co | Burleson | Wilkins, Mabel #8 | 12,400 | 05133647 |
| 663416 | Jun 18, 2008 | Jun 18, 2008 | Crawford Energy Operating Co | Liberty | Barrett, W. J. #6 | 9,000 | 29132763 |
| 663232 | Jun 18, 2008 | Jun 18, 2008 | Crawford Energy Operating Co | Burleson | Moore, Jesse #11 | 12,400 | 05133457 |
| 663039 | Jun 17, 2008 | Jun 17, 2008 | Crawford Energy Operating Co | Washington | Schulte Unit #4 | 12,400 | 47730971 |
| 663039Amendment | Jun 17, 2008 | Jun 17, 2008 | Crawford Energy Operating Co | Washington | Schulte Unit #4 | 12,400 | 47730971 |
| 660596 | May 20, 2008 | May 20, 2008 | Crawford Energy Operating Co | Burleson | Barnhart-Mayfair Unit #2 | 12,300 | 05133645 |
| 660596Amendment | May 20, 2008 | May 20, 2008 | Crawford Energy Operating Co | Burleson | Barnhart-Mayfair Unit #2 | 12,300 | 05133645 |
| 660596Amendment | May 20, 2008 | May 20, 2008 | Crawford Energy Operating Co | Burleson | Barnhart-Mayfair Unit #2 | 12,300 | 05133645 |
| 659130 | Apr 23, 2008 | Apr 23, 2008 | Crawford Energy Operating Co | Brazos | M.P. Walker #4 | 12,300 | 04132009 |
| 659130Amendment | Apr 23, 2008 | Apr 23, 2008 | Crawford Energy Operating Co | Brazos | M.P. Walker #4 | 12,300 | 04132009 |
| 656004 | Mar 5, 2008 | Mar 5, 2008 | Crawford Energy Operating Co | Jim Hogg | Vela #1 | 6,850 | 24732423 |
| 635907 | Apr 2, 2007 | Apr 2, 2007 | Crawford Energy Operating Co | Liberty | Buffum & Benning #5 | 9,000 | 29132699 |
| 632098 | Jan 23, 2007 | Jan 23, 2007 | Crawford Energy Operating Co | Liberty | Teten Unit #1 | 8,000 | 29132691 |
| 631373 | Jan 5, 2007 | Jan 5, 2007 | Crawford Energy Operating Co | Liberty | Barrett, W J #5 | 9,000 | 29132690 |
| 631373Amendment | Jan 5, 2007 | Jan 5, 2007 | Crawford Energy Operating Co | Liberty | Barrett, W J #5 | 9,000 | 29132690 |
| 625357 | Dec 11, 2006 | Dec 11, 2006 | Crawford Energy Operating Co | Liberty | Partlow, R. G. #2 | 8,122 | 29130130 |
| 628885 | Nov 13, 2006 | Nov 13, 2006 | Crawford Energy Operating Co | Matagorda | M & T Ruse Unit #1 | 7,000 | 32132151 |
| 628885Amendment | Nov 13, 2006 | Nov 13, 2006 | Crawford Energy Operating Co | Matagorda | M. & T. Ruse Unit #1 | 7,000 | 32132151 |
| 627799 | Oct 26, 2006 | Oct 26, 2006 | Crawford Energy Operating Co | Matagorda | Hawkins Unit #1 | 7,000 | 32132146 |
| 627799Amendment | Oct 26, 2006 | Oct 26, 2006 | Crawford Energy Operating Co | Matagorda | Hawkins Unit #1 | 7,000 | 32132146 |
| 627793 | Oct 26, 2006 | Oct 26, 2006 | Crawford Energy Operating Co | Matagorda | J. Dark Unit #1 | 5,500 | 32132147 |
| 627040 | Oct 5, 2006 | Oct 5, 2006 | Crawford Energy Operating Co | Brazos | M.P. Walker #2HH | 12,000 | 04131780 |
| 627040Amendment | Oct 5, 2006 | Oct 5, 2006 | Crawford Energy Operating Co | Brazos | M.P. Walker #2HH | 12,000 | 04131780 |
| 627040Amendment | Oct 5, 2006 | Oct 5, 2006 | Crawford Energy Operating Co | Brazos | Walker, M. P. #2HH | 12,000 | 04131780 |
| 625373 | Sep 6, 2006 | Sep 6, 2006 | Crawford Energy Operating Co | Jefferson | Doornbos #2D | 8,900 | 24531823 |
| 625295 | Aug 31, 2006 | Aug 31, 2006 | Crawford Energy Operating Co | Jefferson | Doornbos #4 | 3,500 | 24532459 |
| 624196 | Aug 11, 2006 | Aug 11, 2006 | Crawford Energy Operating Co | Duval | Gruy #2 | 10,800 | 13138900 |
| 623855 | Aug 7, 2006 | Aug 7, 2006 | Crawford Energy Operating Co | Brazoria | Vieman #1 | 10,300 | 03932948 |
| 623855Amendment | Aug 7, 2006 | Aug 7, 2006 | Crawford Energy Operating Co | Brazoria | Vieman Unit #1 | 10,300 | 03932948 |
| 623855Amendment | Aug 7, 2006 | Aug 7, 2006 | Crawford Energy Operating Co | Brazoria | Vieman Unit #1 | 10,300 | 03932948 |
| 622933 | Jul 21, 2006 | Jul 21, 2006 | Crawford Energy Operating Co | Jefferson | Doornbos #3D | 8,600 | 24531863 |
| 610064 | Nov 28, 2005 | Nov 28, 2005 | Crawford Energy Operating Co | Duval | Gruy #1 | 10,800 | 13138845 |
| 608810 | Nov 1, 2005 | Nov 1, 2005 | Crawford Energy Operating Co | Hardin | Will-Kirk #1522 | 9,800 | 19932953 |
| 608466 | Oct 26, 2005 | Oct 26, 2005 | Crawford Energy Operating Co | Bee | Carlson-Danforth #1H | 13,700 | 02533367 |
| 606404 | Sep 15, 2005 | Sep 15, 2005 | Crawford Energy Operating Co | Hardin | Will-Kirk 525 #1 | 9,500 | 19932984 |
| 606404Amendment | Sep 15, 2005 | Sep 15, 2005 | Crawford Energy Operating Co | Hardin | Will-Kirk #1525 | 9,500 | 19932984 |
| 600468Amendment | May 12, 2005 | May 12, 2005 | Crawford Energy Operating Co | Jefferson | Doornbos #1D | 8,650 | 24531858 |
| 556834 | Jan 26, 2005 | Jan 26, 2005 | Crawford Energy Operating Co | Hardin | Will-Kirk #1 | 10,000 | 19932953 |
| 556237 | Jan 14, 2005 | Jan 14, 2005 | Crawford Energy Operating Co | Karnes | Wessendorf #6 | 6,500 | 25531507 |
| 555718 | Jan 5, 2005 | Jan 5, 2005 | Crawford Energy Operating Co | Hardin | Kirkpatrick, et Al #1 | 10,000 | 19932952 |
| 553923 | Nov 19, 2004 | Nov 19, 2004 | Crawford Energy Operating Co | Wharton | Wilbeck #1 | 10,000 | 48134715 |
| 553923Amendment | Nov 19, 2004 | Nov 19, 2004 | Crawford Energy Operating Co | Wharton | Wilbeck #1 | 10,000 | 48134715 |
| 553633 | Nov 15, 2004 | Nov 15, 2004 | Crawford Energy Operating Co | Wharton | Elliott #1 | 4,900 | 48134713 |
| 553591 | Nov 12, 2004 | Nov 12, 2004 | Crawford Energy Operating Co | De Witt | Linder #2 | 6,000 | 12332002 |
| 552014 | Oct 7, 2004 | Oct 7, 2004 | Crawford Energy Operating Co | Karnes | Natho #3 | 6,900 | 25531502 |
| 550986 | Sep 14, 2004 | Sep 14, 2004 | Crawford Energy Operating Co | Karnes | Hagan #1 | 6,800 | 25531499 |
| 548224Amendment | Aug 27, 2004 | Aug 27, 2004 | Crawford Energy Operating Co | De Witt | Matthew #1 | 6,000 | 12331982 |
| 548965 | Jul 30, 2004 | Jul 30, 2004 | Crawford Energy Operating Co | De Witt | Mattthews #2 | 6,000 | 12331985 |
| 548293 | Jul 15, 2004 | Jul 15, 2004 | Crawford Energy Operating Co | De Witt | Kuester #1 | 6,000 | 12331983 |
| 546779 | Jun 10, 2004 | Jun 10, 2004 | Crawford Energy Operating Co | De Witt | Harris #1 | 10,500 | 12331978 |
| 543818 | Apr 27, 2004 | Apr 27, 2004 | Crawford Energy Operating Co | Jackson | Dorotik #1 | 9,900 | 23933254 |
| 544690 | Apr 20, 2004 | Apr 20, 2004 | Crawford Energy Operating Co | De Witt | Linder #1 | 6,000 | 12331971 |
| 544690Amendment | Apr 20, 2004 | Apr 20, 2004 | Crawford Energy Operating Co | De Witt | Linder #1 | 5,427 | 12331971 |
| 542130 | Feb 17, 2004 | Feb 17, 2004 | Crawford Energy Operating Co | Van Zandt | Palmer-Metcalf #9 | 5,800 | 46731071 |
| 540066 | Dec 22, 2003 | Dec 22, 2003 | Crawford Energy Operating Co | Jackson | Hess #1 | 7,999 | 23933245 |
| 536633 | Sep 19, 2003 | Sep 19, 2003 | Crawford Energy Operating Co | Karnes | Smolik - Schorre #1 | 6,800 | 25531481 |
| 536633Amendment | Sep 19, 2003 | Sep 19, 2003 | Crawford Energy Operating Co | Karnes | Smolik - Schorre #1 | 6,604 | 25531481 |
| 536046 | Sep 3, 2003 | Sep 3, 2003 | Crawford Energy Operating Co | Karnes | Wessendorf #5 | 6,900 | 25531480 |
| 535585 | Aug 20, 2003 | Aug 20, 2003 | Crawford Energy Operating Co | Karnes | Natho #2 | 6,800 | 25531478 |
| 535121 | Aug 8, 2003 | Aug 8, 2003 | Crawford Energy Operating Co | Karnes | Wessendorf #4 | 6,900 | 25531477 |
| 532286 | May 22, 2003 | May 22, 2003 | Crawford Energy Operating Co | Karnes | Wessendorf-Letsinger #1 | 6,400 | 25531469 |
| 531666 | May 7, 2003 | May 7, 2003 | Crawford Energy Operating Co | Karnes | Natho #1 | 6,900 | 25531464 |
| 530953 | Apr 28, 2003 | Apr 28, 2003 | Crawford Energy Operating Co | Karnes | Wessendorf #3 | 6,400 | 25531462 |
| 529961 | Mar 25, 2003 | Mar 25, 2003 | Crawford Energy Operating Co | Karnes | Wessendorf #2 | 6,500 | 25531459 |
| 528654 | Feb 19, 2003 | Feb 19, 2003 | Crawford Energy Operating Co | Brazos | R. Moore #7HH | 12,000 | 04131877 |
| 528654Amendment | Feb 19, 2003 | Feb 19, 2003 | Crawford Energy Operating Co | Brazos | Moore, R. Estate Unit #7HH | 12,000 | 04131877 |
| 528653 | Feb 19, 2003 | Feb 19, 2003 | Crawford Energy Operating Co | Karnes | Wessendorf #1 | 6,500 | 25531457 |
| 521903 | Jul 16, 2002 | Jul 16, 2002 | Crawford Energy Operating Co | Burleson | Gaubatz-Fojt Unit #1H | 10,900 | 05133362 |
| 521572 | Jul 3, 2002 | Jul 3, 2002 | Crawford Energy Operating Co | Brazos | Moore, Robert #2 D | 6,500 | 04130590 |
| 520935 | Jun 12, 2002 | Jun 12, 2002 | Crawford Energy Operating Co | Brazos | Moore, Robert Estate #4HH | 11,950 | 04131709 |
| 519581 | May 1, 2002 | May 1, 2002 | Crawford Energy Operating Co | Brazos | Robert Moore Unit #1AHH | 11,900 | 04130527 |
| 519581Amendment | May 1, 2002 | May 1, 2002 | Crawford Energy Operating Co | Brazos | Robert Moore Unit #1AHH | 11,900 | 04130527 |
| 518317 | Mar 14, 2002 | Mar 14, 2002 | Crawford Energy Operating Co | Burleson | Moore, Jesse #11HH | 11,900 | 05133457 |
| 516397 | Dec 21, 2001 | Dec 21, 2001 | Crawford Energy Operating Co | Burleson | Rubenstein Unit #1HH | 12,000 | 05133427 |
| 516397Amendment | Dec 21, 2001 | Dec 21, 2001 | Crawford Energy Operating Co | Burleson | Rubenstein Unit #1HH | 12,000 | 05133427 |
| 516213 | Dec 17, 2001 | Dec 17, 2001 | Crawford Energy Operating Co | Brazos | Big Creek #1HH | 13,500 | 04131882 |
| 516213Amendment | Dec 17, 2001 | Dec 17, 2001 | Crawford Energy Operating Co | Brazos | Big Creek #1HH | 13,500 | 04131882 |
| 516212 | Dec 17, 2001 | Dec 17, 2001 | Crawford Energy Operating Co | Burleson | Barnhart-Mayfair Unit #1HH | 12,500 | 05132235 |
| 516212Amendment | Dec 17, 2001 | Dec 17, 2001 | Crawford Energy Operating Co | Burleson | Barnhart-Mayfair Unit #1HH | 12,500 | 05132235 |
| 513281 | Aug 31, 2001 | Aug 31, 2001 | Crawford Energy Operating Co | Burleson | Wilkins, Mabel #6HH | 12,500 | 05133334 |
| 513281Amendment | Aug 31, 2001 | Aug 31, 2001 | Crawford Energy Operating Co | Burleson | Wilkins, Mabel #6HH | 12,500 | 05133334 |
| 513279 | Aug 31, 2001 | Aug 31, 2001 | Crawford Energy Operating Co | Burleson | Wilkins, Mabel #4HH | 12,500 | 05131538 |
| 513279Amendment | Aug 31, 2001 | Aug 31, 2001 | Crawford Energy Operating Co | Burleson | Wilkins "A" #4HH | 12,500 | 05131538 |
| 510778 | Jun 26, 2001 | Jun 26, 2001 | Crawford Energy Operating Co | Washington | Martin, R. #2H | 14,000 | 47730903 |
| 510778Amendment | Jun 26, 2001 | Jun 26, 2001 | Crawford Energy Operating Co | Washington | Martin, R. "B" #1H | 14,000 | 47730903 |
| 507883 | Apr 17, 2001 | Apr 17, 2001 | Crawford Energy Operating Co | Brazos | Lawrence #1H | 8,900 | 04131591 |
| 507685 | Apr 11, 2001 | Apr 11, 2001 | Crawford Energy Operating Co | Washington | Martin, R. #1H | 14,000 | 47730775 |
| 507685Amendment | Apr 11, 2001 | Apr 11, 2001 | Crawford Energy Operating Co | Washington | Martin, R. #1H | 14,000 | 47730775 |
| 507685Amendment | Apr 11, 2001 | Apr 11, 2001 | Crawford Energy Operating Co | Washington | Martin, R. "A" #1H | 14,000 | 47730775 |
| 506194 | Mar 7, 2001 | Mar 7, 2001 | Crawford Energy Operating Co | Burleson | Wilkins, Mabel #1HH | 11,849 | 05130437 |
| 506194Amendment | Mar 7, 2001 | Mar 7, 2001 | Crawford Energy Operating Co | Burleson | Wilkins, Mabel #1HH | 11,849 | 05130437 |
| 503306 | Dec 20, 2000 | Dec 20, 2000 | Crawford Energy Operating Co | Brazos | Moore, Robert Estate #6HH | 12,500 | 04131875 |
| 503306Amendment | Dec 20, 2000 | Dec 20, 2000 | Crawford Energy Operating Co | Brazos | Moore, Robert Estate #6HH | 12,500 | 04131875 |
| 499429 | Sep 11, 2000 | Sep 11, 2000 | Crawford Energy Operating Co | Jackson | Miller #1 | 7,000 | 23933089 |