North Dakota

Marathon holds more than 320,000 net acres in the Bakken oil play in North Dakota and eastern Montana. The Company’s acreage is within the established Williston Basin in Billings, Divide, Dunn, McKenzie, Mountrail and Williams counties in North Dakota, and Richland County in Montana, with potential net risked resources of approximately 100 million barrels of oil equivalent.

The position provides Marathon access to significant resources in North America. The Company draws upon its extensive experience in reservoir characterization, horizontal drilling, well stimulation, and commercial and marketing expertise in the Rocky Mountain Basins to leverage this substantial position in the Bakken formation.

Drilling commenced in May 2006, leading to first production from Marathon-operated Bakken wells in August 2006. The Company currently has seven rigs drilling in the Basin. Marathon anticipates drilling approximately 400 gross wells over the next four to five years (65 during 2008), with the potential to have approximately 20 mboepd of net peak production by 2012.

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Bakken Fact Sheet (PDF 679KB)