Anadarko Hits Prolific Oil Pay at Shenandoah Well in GOM

Marathon Oil Corporation announced Tuesday the Shenandoah-2 well in the deepwater Gulf of Mexico has encountered more than 1,000 net feet of oil pay in multiple high-quality Lower Tertiary-aged reservoirs.

The Shenandoah-2 well, located in Walker Ridge block 51, was drilled to a total depth of 31,405 feet in approximately 5,800 feet of water, more than 1 mile southwest and approximately 1,700 feet structurally down-dip from the Shenandoah-1 discovery. Similar to the initial Shenandoah discovery well, log and pressure data from the Shenandoah-2 well indicate excellent-quality reservoir and fluid properties. The well was drilled to test the down-dip extent of the accumulation, and the targeted sands were full to base with no oil-water contact.

The Shenandoah-1 discovery well was drilled in early 2009 on Walker Ridge Block 52 and encountered more than 300 net feet of Inboard Lower Tertiary oil pay.

The operator and partners are incorporating the information obtained from Shenandoah-2 into planning and anticipate further appraisal drilling to advance this potentially significant resource discovery.

Marathon Oil holds a 10 percent working interest in Shenandoah. Partners include Anadarko Petroleum Corporation as operator (30 percent working interest), ConocoPhillips (30 percent working interest), Cobalt International Energy, L.P. (20 percent working interest), and Venari Resources LLC (10 percent working interest).


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