Information On Oil And Natural Gas Producing Activities (Tables)

12 Months Ended

Sep. 30, 2017

Oil And Gas Exploration And Production Industries Disclosures [Abstract]

Summary Of Sales By Percentage Through Various Operators Or Purchasers

The following table shows sales, by percentage, through various operators/purchasers during 2017, 2016 and 2015.

	2017			2016			2015
Company A		18	%		23	%		23	%
Company B		13	%		12	%		14	%