Randolph B. Burke 1989 Oil exploration on the Billings anticline began in earnest in 1978, which is a north-plunging structure in the north central part of southwestern North Dakota. Forty-two fields are included in the Billings anticline area. This paper discusses the following features of the Billings anticline: structure, lithology, Duperow production, and some conservative economic scenarios. application/pdf en PennWell Corporation Overview of Devonian Duperow formation production, Billings anticline, North Dakota article