text: horizontal wells drilled just to the Bossier may not always hold Haynes- 
  ville rights. Therefore, Chesapeake and other producers have been drilling 
  aggressively to hold all rights through the Haynesville before the initial 
  three-year term of a typical lease expires. As a result, there has not been 
  much drilling to the Bossier to date. However, once our leases are held by 
  production (HBP) by Haynesville drilling (we expect to be largely complete 
  with HBP drilling by year-end 2011 and completely finished by year-end 
  2012), we will begin developing the Bossier Shale more aggressively in 
  2013. In the Bossier play, we own 205,000 net leasehold acres and esti- 
  mate we could drill up to 2,600 net wells in the years ahead. 
  
  largest and most respected European energy companies. In this trans- 
  action, we sold Statoil 32.5% of our Marcellus assets for $3.375 billion 
  in cash and drilling carries. Today, having sold 32.5% of our original 1.8 
  million net leasehold acres, we have returned to owning 1.7 million net 
  leasehold acres in the play and are the industry’s leading leasehold 
  owner, largest producer and most active developer. We are producing 
  from more than 100 net wells in the Marcellus on our 1.7 million net acres, 
  are currently drilling with 32 rigs and estimate we could drill up to 21,000 
  additional net wells in the years ahead. 