| 751081 | Nov 9, 2012 | Nov 9, 2012 | Chesapeake Operating, Inc. | Betts 54-4-26 RVS #1HH38933509 | 15,000 |
| 725689 | Oct 6, 2011 | Oct 6, 2011 | Chesapeake Operating, Inc. | Pelican Ranch #238932380 | 13,000 |
| 724559 | Sep 22, 2011 | Sep 22, 2011 | Chesapeake Operating, Inc. | Rediger 3-17 RVS #1HH38933014 | 12,000 |
| 710812 | Feb 24, 2011 | Feb 24, 2011 | Chesapeake Operating, Inc. | Tunstill State 56-2-6 #1HH38932766 | 9,000 |
| 693524 | Mar 26, 2010 | Mar 26, 2010 | Chesapeake Operating, Inc. | Reagan State 56-2-34 #1HH38932642 | 15,000 |
| 690702 | Feb 4, 2010 | Feb 4, 2010 | Chesapeake Operating, Inc. | Bell 13-243 #138932551 | 20,000 |
| 690702Amendment | Feb 4, 2010 | Feb 4, 2010 | Chesapeake Operating, Inc. | Bell 13-243 #138932551 | 20,000 |
| 688961 | Dec 22, 2009 | Dec 22, 2009 | Chesapeake Operating, Inc. | Claypool Estate 5-19 #138932548 | 16,960 |
| 688703 | Dec 17, 2009 | Dec 17, 2009 | Chesapeake Operating, Inc. | Claypool Estate 5-19 #138932548 | 16,960 |
| 684635 | Sep 2, 2009 | Sep 2, 2009 | Chesapeake Operating, Inc. | Sinclair Collier #138910544 | 9,000 |
| 684339 | Aug 21, 2009 | Aug 21, 2009 | Chesapeake Operating, Inc. | Valley State 13-132 #138932608 | 20,000 |
| 683103 | Jul 15, 2009 | Jul 15, 2009 | Chesapeake Operating, Inc. | Hoefs 52-23 #138932605 | 20,000 |
| 681740 | Jun 3, 2009 | Jun 3, 2009 | Chesapeake Operating, Inc. | Oden 13-181 #138932604 | 20,000 |
| 679259 | Mar 10, 2009 | Mar 10, 2009 | Chesapeake Operating, Inc. | Carpenter 72-39 #1HH38932602 | 15,000 |
| 677658 | Jan 26, 2009 | Jan 26, 2009 | Chesapeake Operating, Inc. | Ramsland State 72-40 #1HH38932592 | 15,000 |
| 677465 | Jan 20, 2009 | Jan 20, 2009 | Chesapeake Operating, Inc. | Shuffield 72-14 #238932591 | 18,000 |
| 675924 | Dec 10, 2008 | Dec 10, 2008 | Chesapeake Operating, Inc. | Graef State C16-18 #138932589 | 20,000 |
| 675923 | Dec 10, 2008 | Dec 10, 2008 | Chesapeake Operating, Inc. | Baptist 13-223 #138932588 | 20,000 |
| 675427 | Nov 26, 2008 | Nov 26, 2008 | Chesapeake Operating, Inc. | Darden State 71-26 #1HH38932585 | 20,000 |
| 674302 | Nov 7, 2008 | Nov 7, 2008 | Chesapeake Operating, Inc. | Toone 13-157 #138932584 | 20,000 |
| 673646 | Oct 25, 2008 | Oct 25, 2008 | Chesapeake Operating, Inc. | Brown State 62 #138932581 | 20,000 |
| 672944 | Oct 17, 2008 | Oct 17, 2008 | Chesapeake Operating, Inc. | Robertson 265 #1HH38932459 | 20,000 |
| 672932 | Oct 16, 2008 | Oct 16, 2008 | Chesapeake Operating, Inc. | Jones 46 #138932580 | 20,000 |
| 670932 | Sep 26, 2008 | Sep 26, 2008 | Chesapeake Operating, Inc. | Collier 52-14 #138932572 | 20,000 |
| 670932Amendment | Sep 26, 2008 | Sep 26, 2008 | Chesapeake Operating, Inc. | Collier 52-14 #138932572 | 20,000 |
| 670485 | Sep 24, 2008 | Sep 24, 2008 | Chesapeake Operating, Inc. | TXL 55-7-35 #138932568 | 17,000 |
| 670484 | Sep 24, 2008 | Sep 24, 2008 | Chesapeake Operating, Inc. | TXL 55-7-21 #1HH38932569 | 17,000 |
| 670450 | Sep 22, 2008 | Sep 22, 2008 | Chesapeake Operating, Inc. | Graef C16-17 #138932567 | 20,000 |
| 647426Amendment | Aug 18, 2008 | Aug 18, 2008 | Chesapeake Operating, Inc. | Lindsay 326 #238931870 | 15,200 |
| 665804 | Jul 22, 2008 | Jul 22, 2008 | Chesapeake Operating, Inc. | Grove State 72-21 #1HH38932552 | 18,000 |
| 665804Amendment | Jul 22, 2008 | Jul 22, 2008 | Chesapeake Operating, Inc. | Grove State 72-21 #1HH38932552 | 18,000 |
| 664730 | Jul 7, 2008 | Jul 7, 2008 | Chesapeake Operating, Inc. | Bell 13-243 #138932551 | 20,000 |
| 658017 | Apr 7, 2008 | Apr 7, 2008 | Chesapeake Operating, Inc. | Robertson State 71-15 #1HH38932531 | 18,000 |
| 657116 | Mar 24, 2008 | Mar 24, 2008 | Chesapeake Operating, Inc. | Torrez State 61 #1HH38932529 | 18,000 |
| 656604 | Mar 14, 2008 | Mar 14, 2008 | Chesapeake Operating, Inc. | Brennand State 72-10 #1HH38932526 | 18,000 |
| 655942 | Mar 5, 2008 | Mar 5, 2008 | Chesapeake Operating, Inc. | Jobe State 72-7 #1HH38932524 | 18,000 |
| 655888 | Mar 5, 2008 | Mar 5, 2008 | Chesapeake Operating, Inc. | Methodist State 72-38 #1HH38932522 | 18,000 |
| 655312 | Feb 25, 2008 | Feb 25, 2008 | Chesapeake Operating, Inc. | Brackenridge State 57-44 #138932520 | 18,000 |
| 655312Amendment | Feb 25, 2008 | Feb 25, 2008 | Chesapeake Operating, Inc. | Brackenridge State 57-44 #138932520 | 20,000 |
| 655312Amendment | Feb 25, 2008 | Feb 25, 2008 | Chesapeake Operating, Inc. | Brackenridge State 57-44 #138932520 | 20,000 |
| 655117 | Feb 22, 2008 | Feb 22, 2008 | Chesapeake Operating, Inc. | Noble 72-32 #1HH38932518 | 18,000 |
| 654202 | Feb 8, 2008 | Feb 8, 2008 | Chesapeake Operating, Inc. | Yada State 70-29 #1HH38932513 | 18,000 |
| 654202Amendment | Feb 8, 2008 | Feb 8, 2008 | Chesapeake Operating, Inc. | Yada State 70-29 #1HH38932513 | 18,000 |
| 653553 | Jan 31, 2008 | Jan 31, 2008 | Chesapeake Operating, Inc. | Harrison State 56-38 #3ST38932425 | 14,000 |
| 653553Amendment | Jan 31, 2008 | Jan 31, 2008 | Chesapeake Operating, Inc. | Harrison State 56-38 #3ST38932425 | 19,000 |
| 653552 | Jan 31, 2008 | Jan 31, 2008 | Chesapeake Operating, Inc. | Shuffield Gas Unit #138932512 | 14,000 |
| 653551 | Jan 30, 2008 | Jan 30, 2008 | Chesapeake Operating, Inc. | Hill State 71-4 #138932511 | 14,000 |
| 652314 | Jan 9, 2008 | Jan 9, 2008 | Chesapeake Operating, Inc. | McCoy Remme State 55-10 #138932509 | 14,000 |
| 652034 | Jan 4, 2008 | Jan 4, 2008 | Chesapeake Operating, Inc. | McClure State 72-23 #1HH38932503 | 15,000 |
| 652034Amendment | Jan 4, 2008 | Jan 4, 2008 | Chesapeake Operating, Inc. | McClure State 72-23 #1HH38932503 | 15,000 |
| 650602 | Dec 10, 2007 | Dec 10, 2007 | Chesapeake Operating, Inc. | Jobe State C 17-18 #138932501 | 14,000 |
| 650284 | Dec 6, 2007 | Dec 6, 2007 | Chesapeake Operating, Inc. | Munn State 59-30 #138932500 | 15,000 |
| 649786Amendment | Nov 26, 2007 | Nov 26, 2007 | Chesapeake Operating, Inc. | Block 58 State 42 #1HH38932497 | 13,000 |
| 647426Amendment | Oct 17, 2007 | Oct 17, 2007 | Chesapeake Operating, Inc. | Lindsay 326 #238931870 | 15,200 |
| 647349 | Oct 11, 2007 | Oct 11, 2007 | Chesapeake Operating, Inc. | Caldwell State 71-5 #1HH38932494 | 16,000 |
| 645038 | Aug 30, 2007 | Aug 30, 2007 | Chesapeake Operating, Inc. | Jobe State 70-22 #2HH38932488 | 14,000 |
| 645038Amendment | Aug 30, 2007 | Aug 30, 2007 | Chesapeake Operating, Inc. | Jobe State 70-22 #2HH38932488 | 16,000 |
| 644583 | Aug 21, 2007 | Aug 21, 2007 | Chesapeake Operating, Inc. | Jobe State 70-58 #1H38932485 | 16,000 |
| 640967 | Jul 2, 2007 | Jul 2, 2007 | Chesapeake Operating, Inc. | Hodge State 70-24 #1HH38932480 | 14,000 |
| 640445 | Jun 20, 2007 | Jun 20, 2007 | Chesapeake Operating, Inc. | Robertson State 60 #1HH38932477 | 14,000 |
| 640462 | Jun 19, 2007 | Jun 19, 2007 | Chesapeake Operating, Inc. | Lowe State 72-8 #1H38932476 | 14,000 |
| 639891 | Jun 11, 2007 | Jun 11, 2007 | Chesapeake Operating, Inc. | Jobe State 70-20 #138932473 | 15,000 |
| 639823 | Jun 7, 2007 | Jun 7, 2007 | Chesapeake Operating, Inc. | Johnson State 56-10 #138932472 | 14,000 |
| 639823Amendment | Jun 7, 2007 | Jun 7, 2007 | Chesapeake Operating, Inc. | Johnson State 56-10 #138932472 | 14,000 |
| 637096 | Apr 20, 2007 | Apr 20, 2007 | Chesapeake Operating, Inc. | Jobe State 70-1 #2HH38932464 | 14,000 |
| 637096Amendment | Apr 20, 2007 | Apr 20, 2007 | Chesapeake Operating, Inc. | Jobe State 70-1 #2HH38932464 | 14,000 |
| 636642 | Apr 17, 2007 | Apr 17, 2007 | Chesapeake Operating, Inc. | Robertson 265 #1HH38932459 | 13,000 |
| 636642Amendment | Apr 17, 2007 | Apr 17, 2007 | Chesapeake Operating, Inc. | Robertson 265 #1HH38932459 | 13,000 |
| 636642Amendment | Apr 17, 2007 | Apr 17, 2007 | Chesapeake Operating, Inc. | Robertson 265 #1HH38932459 | 14,000 |
| 636643 | Apr 13, 2007 | Apr 13, 2007 | Chesapeake Operating, Inc. | Harrison State 56-37 #138932460 | 19,500 |
| 633883 | Feb 26, 2007 | Feb 26, 2007 | Chesapeake Operating, Inc. | Allison State 103 #138932454 | 18,000 |
| 633883Amendment | Feb 26, 2007 | Feb 26, 2007 | Chesapeake Operating, Inc. | Allison State 103 #138932454 | 18,000 |
| 628643 | Nov 7, 2006 | Nov 7, 2006 | Chesapeake Operating, Inc. | Sunray 72-3 #1RE38910542 | 16,000 |
| 628643Amendment | Nov 7, 2006 | Nov 7, 2006 | Chesapeake Operating, Inc. | Sunray 72-3 #1RE38910542 | 16,000 |
| 628029 | Oct 25, 2006 | Oct 25, 2006 | Chesapeake Operating, Inc. | MBF 72-4 #138932438 | 16,000 |
| 628029Amendment | Oct 25, 2006 | Oct 25, 2006 | Chesapeake Operating, Inc. | MBF 72-4 #138932438 | 16,000 |
| 625973 | Sep 15, 2006 | Sep 15, 2006 | Chesapeake Operating, Inc. | Johnson #13438932331 | 10,496 |
| 621471Amendment | Jun 23, 2006 | Jun 23, 2006 | Chesapeake Operating, Inc. | Wright State 70-25 #1RE38931087 | 12,775 |
| 621448Amendment | Jun 23, 2006 | Jun 23, 2006 | Chesapeake Operating, Inc. | Wright Estate 70-5 #138900245 | 13,007 |
| 609522Amendment | Nov 15, 2005 | Nov 15, 2005 | Chesapeake Operating, Inc. | Block 72 State 36 #138932388 | 14,000 |
| 605833Amendment | Sep 7, 2005 | Sep 7, 2005 | Chesapeake Operating, Inc. | Pelican Ranch #238932380 | 13,000 |
| 605347Amendment | Aug 30, 2005 | Aug 30, 2005 | Chesapeake Operating, Inc. | Pelican Ranch #1HH38932378 | 15,000 |
| 605347Amendment | Aug 30, 2005 | Aug 30, 2005 | Chesapeake Operating, Inc. | Pelican Ranch State #1HH38932378 | 15,000 |