Oil Sale Revenue	12 Months Ended
Dec. 31, 2014
Notes to Financial Statements
7. Oil Sale Revenue	The Company currently records revenue from petroleum sales when received from the operator of the well. Petroleum sales are reported net of working interest and overriding royalty amounts due. Prior to 2006, the Company was responsible for distributing allocable portions of oil sale revenue to working interest and royalty owners for production in the Cheyenne River Prospect. Accordingly, a liability for estimated royalty payments was recorded when oil sale proceeds were received since a division order had not been completed, certain amounts were credited to royalties payable until the division order issue was resolved.

Oil Sale Revenue

12 Months Ended

Dec. 31, 2014

The Company currently records revenue from petroleum sales when received from the operator of the well. Petroleum sales are reported net of working interest and overriding royalty amounts due. Prior to 2006, the Company was responsible for distributing allocable portions of oil sale revenue to working interest and royalty owners for production in the Cheyenne River Prospect. Accordingly, a liability for estimated royalty payments was recorded when oil sale proceeds were received since a division order had not been completed, certain amounts were credited to royalties payable until the division order issue was resolved.