Oil leases

I have gas and oil leases in the Saddle Butte Field of Billings County, North Dakota. My

leases will expire on 10/12/2014 with Continental Resources. Continental does not to

renew my leases until they are done evaluating my area. Is this normal practice for an

oil company? I here oil is real hard and not plentiful to pump out of the ground. Is that true?

I've seen a map of oil drilling activity all around my area. Are there others out there in my

area who have experienced no lease renewal until they have completed there evaluation?

All information is welcome Thank-you

RWR