Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
William F. Harris0
Kenneth W. Smith0
Ray L. Johnston0
Stuart N. Milligan0
Timothy L. Burden0
Wayne R. Dreher, Jr.0
Date of Patent
September 20, 2011
Patent Application Number
11615539
Date Filed
December 22, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
A system for reducing pressure drop associated with the turbulent flow of asphaltenic crude oil through a conduit. The crude oil has a high asphaltene content and/or a low API gravity. Such reduction in pressure drop is achieved by treating the asphaltenic crude oil with a high molecular weight drag reducing polymer that can have a solubility parameter within about 20 percent of the solubility parameter of the heavy crude oil. The drag reducing polymer can also comprise the residues of monomers having at least one heteroatom.
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