2Q2010 – 3Q2010 Semi-Annual Progress Report Thirty-First and Thirty-Second Quarterly Report: April 2010 – September 2010 Resource Characterization and Quantification of Natural Gas Hydrate and Associated Free-Gas Accumulations in the Prudhoe Bay – Kuparu

Oil and Natural Gas Technology Cooperative Research Agreement Award Number DE-FC-01NT41332 2Q2010 – 3Q2010 Semi-Annual Progress Report Thirty-First and Thirty-Second Quarterly Report: April 2010 – September 2010 Resource Characterization and Quantification of Natural Gas Hydrate and Associated Free-Gas Accumulations in the Prudhoe Bay – Kuparuk River Area on the North Slope of Alaska Submitted by: BP Exploration (Alaska), Inc. Robert Hunter (ASRC Energy Services) with Stephen Lewis (Principal Investigator) P.O. Box 196612 Anchorage, Alaska 99519-6612 Prepared for: United States Department of Energy National Energy Technology Laboratory November 4, 2010