Now that annual reports are out, one might be able to find out to what extent one's favorite company is at risk with regard to expiring leases.
CLR has the following amount of Williston Basin leases expiring as of December 31 of the corresponding year (numbers are rounded):
- 2011: 100,000 net acres
- 2012: 124,000 net acres
- 2013: 214,000 net acres
- 100,000 / 1280-acre spacing = 78 wells / 24 rigs --> 3 wells/rig/year -- obviously not a problem
- Unless my calculations are wrong, or I have incorrect data to begin with, CLR has plenty of capacity
Compare with DNR's expiring leases.