Alaska-US gas line - design considerations for the Alaska segment of ANGTS (Alaska natural gas transportation system)

In 1968, the largest single discovery of oil and natural gas ever found on the North American continent was made at Prudhoe Bay on the North Slope of Alaska. The Prudhoe Bay field contains over 26 tcf of recoverable natural gas, or ca 13% of the proven domestic gas reserves. To bring this natural gas to the market in the Lower 48 states, filings were made with the Federal Power Commission, the predecessor to the Federal Energy Regulatory Commission, to construct a pipeline transportation system. The gas pipeline project will initially transport ca 2 billion cu ft of gas daily, expandable to 3.2 billion cu ft/day with additional compressor stations. The total ANGTS comprises nearly 4,800 miles of pipeline with diameters ranging from 36 to 56 in., and initially ca 1.4 million hp will be installed to transport 2.0 billion cu ft/day. This presentation concentrates on the Alaska segment of the ANGTS.