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Smart pigging vital to operation of Texas, Northwest pipeline. D. King. Pipeline Gas J., March 1999, 226(3), 14--21.

Operations of a gas transmission company in Texas and the Pacific Northwest are described. 10 000 miles of pipeline transport 6 billion ft3/day and a 500 mile network carries 100 000 brl/day of natural gas liquids to 9 natural gas processing plants. Smart pigs use magnetic flux leakage inspection tools to determine the physical condition of 8 to 36 in. diameter pipelines. A typical pig for 36 in. lines is 13.7 ft long and weighs 7035 pounds. Before launching the smart pig the line is cleaned of debris and a dummy pig is run to ensure that sticking will not damage the expensive equipment.

Abstract details

Journal title: Pipeline and Gas Journal

Subjects: Inspection, Maintenance, Gas works (and other conversion to gases), Transmission, Gas transmission, Pipeline, Transport, Transportation of products, Oil and gas extraction, Transportation, Transmission and Distribution, Transport not elsewhere specified, Natural gas, Oil and gas, Natural gas liquids, Oil, Primary energy production