| 626867 | Oct 3, 2006 | Oct 3, 2006 | Key Energy of Colorado, Inc. | Hardeman | Hurst 'D' #7HH | 8,300 | 19731521 |
| 620016 | Jun 5, 2006 | Jun 5, 2006 | Key Energy of Colorado, Inc. | Hemphill | Petree #1203 | 13,000 | 21133618 |
| 615954 | Mar 17, 2006 | Mar 17, 2006 | Key Energy of Colorado, Inc. | Hardeman | Holmes #7H | 8,000 | 19731276 |
| 615954Amendment | Mar 17, 2006 | Mar 17, 2006 | Key Energy of Colorado, Inc. | Hardeman | Holmes #7 | 8,000 | 19731276 |
| 607503 | Oct 7, 2005 | Oct 7, 2005 | Key Energy of Colorado, Inc. | Hardeman | Long 398 #3X | 7,799 | 19731316 |
| 606818 | Sep 27, 2005 | Sep 27, 2005 | Key Energy of Colorado, Inc. | Hardeman | Holmes "284' #6 | 8,400 | 19731286 |
| 606818Amendment | Sep 27, 2005 | Sep 27, 2005 | Key Energy of Colorado, Inc. | Hardeman | Holmes "284' #6 | 8,400 | 19731286 |
| 601091 | May 24, 2005 | May 24, 2005 | Key Energy of Colorado, Inc. | Hardeman | Holmes-Neal Unit 284 #1 | 7,925 | 19731265 |
| 560840 | May 10, 2005 | May 10, 2005 | Key Energy of Colorado, Inc. | Hardeman | Langford et Al #1025 | 8,857 | 19730350 |
| 557564 | Feb 11, 2005 | Feb 11, 2005 | Key Energy of Colorado, Inc. | Hardeman | Long 398 #3X | 7,799 | 19731316 |
| 539502 | Dec 10, 2003 | Dec 10, 2003 | Key Energy of Colorado, Inc. | Hardeman | Hurst "D" #7HH | 8,195 | 19731521 |
| 536966 | Oct 1, 2003 | Oct 1, 2003 | Key Energy of Colorado, Inc. | Hardeman | Tabor Unit #1ST | 8,800 | 19731039 |
| 536908 | Oct 1, 2003 | Oct 1, 2003 | Key Energy of Colorado, Inc. | Hardeman | J & J Ranch Unit #1HH | 8,200 | 19731333 |
| 536033 | Sep 4, 2003 | Sep 4, 2003 | Key Energy of Colorado, Inc. | Hardeman | Hurst B #9H | 8,500 | 19731541 |
| 536033Amendment | Sep 4, 2003 | Sep 4, 2003 | Key Energy of Colorado, Inc. | Hardeman | Hurst B #9H | 8,500 | 19731541 |
| 535594 | Aug 25, 2003 | Aug 25, 2003 | Key Energy of Colorado, Inc. | Hardeman | Moore #1 HH | 8,510 | 19730903 |
| 535270 | Aug 13, 2003 | Aug 13, 2003 | Key Energy of Colorado, Inc. | Hardeman | Hurst "A" #8 | 8,200 | 19731539 |
| 535270Amendment | Aug 13, 2003 | Aug 13, 2003 | Key Energy of Colorado, Inc. | Hardeman | Hurst "A" #8HH | 8,200 | 19731539 |
| 531366 | May 1, 2003 | May 1, 2003 | Key Energy of Colorado, Inc. | Hardeman | Summer Lee Unit #1HH | 9,800 | 19720035 |
| 531366Amendment | May 1, 2003 | May 1, 2003 | Key Energy of Colorado, Inc. | Hardeman | Summerlee Unit #1HH | 9,800 | 19720035 |
| 530604 | Apr 15, 2003 | Apr 15, 2003 | Key Energy of Colorado, Inc. | Hardeman | Cato "96" Unit #1HH | 8,880 | 19731081 |
| 529071 | Mar 7, 2003 | Mar 7, 2003 | Key Energy of Colorado, Inc. | Hardeman | G. P. #3 | 8,600 | 19731523 |
| 528029 | Feb 19, 2003 | Feb 19, 2003 | Key Energy of Colorado, Inc. | Hardeman | Hurst #7HH | 9,800 | 19731521 |
| 528029Amendment | Feb 19, 2003 | Feb 19, 2003 | Key Energy of Colorado, Inc. | Hardeman | Hurst #7HH | 8,633 | 19731521 |
| 527089 | Jan 8, 2003 | Jan 8, 2003 | Key Energy of Colorado, Inc. | Hardeman | Hurst #6HH | 10,200 | 19700133 |
| 525311 | Nov 8, 2002 | Nov 8, 2002 | Key Energy of Colorado, Inc. | Hardeman | Owens Unit #1HH | 9,000 | 19730836 |
| 525029 | Nov 1, 2002 | Nov 1, 2002 | Key Energy of Colorado, Inc. | Hardeman | McNabb-Atnip Unit #1H | 10,800 | 19730900 |
| 524298 | Oct 3, 2002 | Oct 3, 2002 | Key Energy of Colorado, Inc. | Wilbarger | Eagle Flats Land & Cattle Co. UN #1H | 8,900 | 48732315 |
| 524298Amendment | Oct 3, 2002 | Oct 3, 2002 | Key Energy of Colorado, Inc. | Wilbarger | Eagle Flats Land & Cattle Co. UN #1HH | 8,900 | 48732315 |
| 522781 | Aug 14, 2002 | Aug 14, 2002 | Key Energy of Colorado, Inc. | Hardeman | Haynes Unit #1 | 9,000 | 19731512 |
| 522781Amendment | Aug 14, 2002 | Aug 14, 2002 | Key Energy of Colorado, Inc. | Hardeman | Haynes Unit #1 | 9,000 | 19731512 |
| 522631 | Aug 8, 2002 | Aug 8, 2002 | Key Energy of Colorado, Inc. | Hardeman | Cato "B" #1HH | 10,550 | 19730965 |
| 522053 | Jul 23, 2002 | Jul 23, 2002 | Key Energy of Colorado, Inc. | Hardeman | Hurst #5 | 9,000 | 19731489 |
| 522053Amendment | Jul 23, 2002 | Jul 23, 2002 | Key Energy of Colorado, Inc. | Hardeman | Hurst #5HH | 9,000 | 19731489 |
| 521622 | Jul 8, 2002 | Jul 8, 2002 | Key Energy of Colorado, Inc. | Hardeman | Mc Nabb #5HH | 10,250 | 19731508 |
| 521622Amendment | Jul 8, 2002 | Jul 8, 2002 | Key Energy of Colorado, Inc. | Hardeman | Mc Nabb #5HH | 10,250 | 19731508 |
| 521393 | Jun 26, 2002 | Jun 26, 2002 | Key Energy of Colorado, Inc. | Hardeman | Hurst #11HH | 9,000 | 19731338 |
| 520356 | May 24, 2002 | May 24, 2002 | Key Energy of Colorado, Inc. | Hardeman | Judd #2H | 8,500 | 19730938 |
| 519681 | May 3, 2002 | May 3, 2002 | Key Energy of Colorado, Inc. | Hardeman | Turner Unit #1 | 9,300 | 19731504 |
| 519681Amendment | May 3, 2002 | May 3, 2002 | Key Energy of Colorado, Inc. | Hardeman | Turner Unit #1H | 9,300 | 19731504 |
| 519681Amendment | May 3, 2002 | May 3, 2002 | Key Energy of Colorado, Inc. | Hardeman | Turner Unit #1HH | 9,300 | 19731504 |
| 518449 | Mar 20, 2002 | Mar 20, 2002 | Key Energy of Colorado, Inc. | Zapata | Guadalupe #2 | 9,000 | 50534512 |
| 514986 | Nov 1, 2001 | Nov 1, 2001 | Key Energy of Colorado, Inc. | Hardeman | Hurst #2HH | 9,000 | 19731313 |
| 514986Amendment | Nov 1, 2001 | Nov 1, 2001 | Key Energy of Colorado, Inc. | Hardeman | Hurst #2HH | 9,000 | 19731313 |
| 514769 | Oct 25, 2001 | Oct 25, 2001 | Key Energy of Colorado, Inc. | Hardeman | Holmes "284" #4ST | 9,000 | 19731280 |
| 513822 | Sep 21, 2001 | Sep 21, 2001 | Key Energy of Colorado, Inc. | Hardeman | McNabb #4HH | 10,000 | 19731470 |
| 510697 | Jul 23, 2001 | Jul 23, 2001 | Key Energy of Colorado, Inc. | Hardeman | Hurst #3 | 8,500 | 19731479 |
| 510986 | Jul 2, 2001 | Jul 2, 2001 | Key Energy of Colorado, Inc. | Webb | Hooks #1 | 8,000 | 47937868 |
| 509128 | May 17, 2001 | May 17, 2001 | Key Energy of Colorado, Inc. | Hardeman | Nichols Unit #1 | 9,000 | 19731430 |
| 508650 | May 7, 2001 | May 7, 2001 | Key Energy of Colorado, Inc. | Zapata | Guadalupe #1 | 9,000 | 50534343 |
| 508094 | Apr 23, 2001 | Apr 23, 2001 | Key Energy of Colorado, Inc. | Zapata | Martinez, B. M. #6 | 8,000 | 50534331 |
| 502825 | Dec 8, 2000 | Dec 8, 2000 | Key Energy of Colorado, Inc. | Hardeman | Hurst #5 | 9,000 | 19731489 |
| 501516 | Nov 2, 2000 | Nov 2, 2000 | Key Energy of Colorado, Inc. | Hardeman | Hurst #4 | 9,000 | 19730453 |
| 501516Amendment | Nov 2, 2000 | Nov 2, 2000 | Key Energy of Colorado, Inc. | Hardeman | Hurst #4 | 9,000 | 19730453 |
| 498672 | Aug 25, 2000 | Aug 25, 2000 | Key Energy of Colorado, Inc. | Hardeman | Young Unit #2 | 9,000 | 19731482 |
| 498492 | Aug 18, 2000 | Aug 18, 2000 | Key Energy of Colorado, Inc. | Hardeman | Hurst #3 | 8,500 | 19731479 |
| 495907 | Jun 21, 2000 | Jun 21, 2000 | Key Energy of Colorado, Inc. | Hardeman | McNabb #4 | 9,000 | 19731470 |
| 492160 | Feb 23, 2000 | Feb 23, 2000 | Key Energy of Colorado, Inc. | Hardeman | Holmes #5 | 7,971 | 19731281 |
| 488752 | Oct 22, 1999 | Oct 22, 1999 | Key Energy of Colorado, Inc. | Hardeman | West Estate #3 | 9,900 | 19731460 |
| 487346 | Oct 7, 1999 | Oct 7, 1999 | Key Energy of Colorado, Inc. | Hardeman | Meharg Unit #1ST | 8,300 | 19731444 |
| 488062 | Sep 29, 1999 | Sep 29, 1999 | Key Energy of Colorado, Inc. | Hardeman | Baustert #1 | 8,500 | 19731456 |
| 487113 | Aug 30, 1999 | Aug 30, 1999 | Key Energy of Colorado, Inc. | Hardeman | West Estate Unit #2 | 9,000 | 19731452 |
| 484908 | Jun 1, 1999 | Jun 1, 1999 | Key Energy of Colorado, Inc. | Hardeman | Young #1 | 8,500 | 19731448 |
| 484908Amendment | Jun 1, 1999 | Jun 1, 1999 | Key Energy of Colorado, Inc. | Hardeman | Young #1 | 8,500 | 19731448 |
| 479846 | Dec 17, 1998 | Dec 17, 1998 | Key Energy of Colorado, Inc. | Hardeman | Meharg Unit #1 | 8,500 | 19731444 |
| 480593 | Nov 4, 1998 | Nov 4, 1998 | Key Energy of Colorado, Inc. | Hardeman | Diane #2 | 9,000 | 19731445 |
| 478621 | Aug 12, 1998 | Aug 12, 1998 | Key Energy of Colorado, Inc. | Hardeman | R & R #1 | 8,500 | 19731442 |
| 478322 | Jul 28, 1998 | Jul 28, 1998 | Key Energy of Colorado, Inc. | Hardeman | Cato #2 | 9,000 | 19731270 |
| 476854 | Jun 4, 1998 | Jun 4, 1998 | Key Energy of Colorado, Inc. | Hardeman | Wells Unit #1 | 8,900 | 19731439 |
| 476334 | May 15, 1998 | May 15, 1998 | Key Energy of Colorado, Inc. | Hardeman | Stepp Unit #4 | 8,500 | 19731438 |
| 475134 | Apr 8, 1998 | Apr 8, 1998 | Key Energy of Colorado, Inc. | Hardeman | Holmes #7 | 8,800 | 19731276 |
| 474227 | Mar 13, 1998 | Mar 13, 1998 | Key Energy of Colorado, Inc. | Hardeman | Love Unit #1 | 9,000 | 19731433 |
| 472903 | Feb 9, 1998 | Feb 9, 1998 | Key Energy of Colorado, Inc. | Hardeman | Nichols Unit #1 | 9,000 | 19731430 |
| 472498 | Jan 21, 1998 | Jan 21, 1998 | Key Energy of Colorado, Inc. | Hardeman | Cato Unit #1 | 8,500 | 19731429 |
| 471522 | Dec 22, 1997 | Dec 22, 1997 | Key Energy of Colorado, Inc. | Hardeman | Jeffery #1 | 9,000 | 19731426 |
| 470707 | Dec 5, 1997 | Dec 5, 1997 | Key Energy of Colorado, Inc. | Hardeman | West Estate #1 | 9,000 | 19731423 |
| 470006 | Nov 17, 1997 | Nov 17, 1997 | Key Energy of Colorado, Inc. | Hardeman | Gerald Unit #1 | 8,600 | 19731185 |
| 470006Amendment | Nov 17, 1997 | Nov 17, 1997 | Key Energy of Colorado, Inc. | Hardeman | Gerald Unit #1 | 8,383 | 19731185 |