Own the highest producing with the biggest reserves. For as long as you can.  Lived through 2 oil and gas crashes in a community with 10+ that grew to 35+.

 

http://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=RWTC&f=A

Revenue**

http://www.eia.gov/dnav/pet/pet_crd_wellcost_s1_a.htm

Cost**

Good long tern bets.... OIL