Marathon Oil Corporation announced that Michael J. Stover, currently manager of the company's mid-continent production operations, has been appointed to the newly established position of vice president, Operations Services effective February 1, 2013. In this role, Stover will have oversight responsibility for Marathon Oil's Upstream Development, Technology, Technical Excellence, Global Procurement, Land and Commercial Services, and Drilling and Completions activities. Stover will be based in Houston and report to Marathon Oil Corporation chairman, president and CEO Clarence P. Cazalot Jr. Stover joined Marathon Oil in 1986, initially as a roustabout, followed by operations and reservoir engineering assignments for the Yates Field located in West Texas.

In 1991, he transferred to the company's international group in Houston and was responsible for reservoir and economic studies for fields in Ireland, Tunisia, and Norway.