2Q2013 – 3Q2013 Semi-Annual Progress Report Forty-Third and Forty-Forth Quarterly Reports: April 2013 – September 2013 Resource Characterization and Quantification of Natural Gas Hydrate and Associated Free-Gas Accumulations in the Prudhoe Bay – Kuparuk R

Oil and Natural Gas Technology Cooperative Research Agreement Award Number DE-FC-01NT41332 2Q2013 – 3Q2013 Semi-Annual Progress Report Forty-Third and Forty-Forth Quarterly Reports: April 2013 – September 2013 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 (Weston Solutions, Inc.) with Scott Digert (Principal Investigator) P.O. Box 196612 Anchorage, Alaska 99519-6612 Prepared for: United States Department of Energy National Energy Technology Laboratory October 31, 2013