Information On Oil And Natural Gas Producing Activities (Tables)

12 Months Ended

Sep. 30, 2015

Information On Oil And Natural Gas Producing Activities [Abstract]

Summary Of Sales Through Various Operators Or Purchasers

	2015	2014	2013
Cheyenne Petroleum	23%	6%	-
Southwestern Energy Company	14%	17%	20%
Chesapeake Operating, Inc.	7%	11%	10%