net leasehold acres, on which we estimate we could drill 
up to 2,300 future net wells in addition to our 965 net 
wells currently producing. We are currently using 18 rigs to  
develop this inventory of drillsites and our gross operated 
production in the Barnett recently set a record of more  
than 1.3 bcfe per day. 
Our most important development in the Barnett Shale 
during 2010 was closing the joint venture agreement on 
25% of our assets in the Barnett to Paris-based Total,  
the fifth-largest oil company in the world. Total paid  
6  |  LETTER TO SHAREHOLDERS
The knowledge and experience Chesapeake gained in the Barnett Shale, the granddaddy 
of all U.S. shale plays, has been instrumental in the company’s successful development  
of all subsequent unconventional natural gas and liquids plays.