Geology and Petroleum Potential of the Arbuckle Group in NE Oklahoma
Geology and Petroleum Potential of the Arbuckle Group in NE Oklahoma The Arbuckle group in northeastern Oklahoma consists of multiple carbonate formations, along with several relatively thin sandstone units. The group is a part of the ‘Great American Carbonate Bank’ of the mid-continent and can be found regionally as far east as the Arkoma Basin in Arkansas, and as far west as the Anadarko Basin in Oklahoma. The Arbuckle is part of the craton-wide Sauk sequence, which is both underlain and overlain by regional unconformities. Arbuckle is not deposited on top of a source rock. In order for reservoirs within the Arbuckle to become charged with hydrocarbons, they must be juxtaposed against source rocks. Therefore the Arbuckle is sometimes described as an ‘unconformity play’ in Oklahoma. This paper outlines the depositional environment of the Arbuckle, synthesizes previous studies and examines the Arbuckle petroleum system in NE Oklahoma. The investigation includes reservoir properties, areas of secondary porosity (specifically, sequence boundaries), and hydrocarbon potential of the Arbuckle Group using 3D seismic data interpretation, correlation of well logs, and outcrop studies.
AAPG Datapages/Search and Discovery Article #90221 © 2015 Mid-Continent Section, Tulsa, Oklahoma, October 4-6, 2015