Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Benton Frederick Baugh0
Date of Patent
August 16, 2011
Patent Application Number
12151215
Date Filed
May 6, 2008
Patent Primary Examiner
Patent abstract
A method of remediating deposits within a pipeline by a pig within the pipeline which sealingly engages the internal diameter of the pipeline, holding back on the movement of the pig with a wire rope, pumping down the pipeline, providing a first passageway through the pig for pumping through flow restrictions on the pig to increase the velocity of the flow to enhance the effectiveness of the remediation, providing a second passageway through the pig with less flow restriction than the first passageway for flow through the pig during retrieval, and providing a selector valve for alternately directing flow through the pig to the first passageway and to the second passageway each time the flow is stopped and restarted.
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