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1. 发明授权

US06264401B1 Method for enhancing the flow of heavy crudes through subsea pipelines 失效
标题翻译：通过海底管道提高重质原油流量的方法
公开(公告)号：US06264401B1
公开(公告)日：2001-07-24
申请号：US08625428
申请日：1996-03-26
申请人： Carl Goittlieb Langner , Ronald Marshall Bass
发明人： Carl Goittlieb Langner , Ronald Marshall Bass
IPC分类号： F16L100
CPC分类号： F16L53/37 , Y10T137/6606
摘要： A method for enhancing the flow of heavy crude oil by heating a subsea pipeline is disclosed in which a pipe-in-pipe subsea pipeline is established having a flowline for transporting well fluids in the form of an electrically conductive inner pipe concentrically surrounded by an electrically conductive protective outer pipe and the inner pipe is electrically insulated from the outer pipe along the length of the subsea pipeline. The pipe-in-pipe subsea pipeline is electrically heated continuously along its length to maintain the temperature of crude oil at a level facilitating pipeline transportation, this heating comprising passing alternating electrical current along the exterior surface of the inner pipe and along the interior surface of the outer pipe. In this manner the crude oil can be maintained at a temperature at which viscosity does not prevent efficient and economical pipeline transport.
摘要翻译：公开了一种通过加热海底管道来增强重质原油的流动的方法，其中建立了管道内海底管道，其具有用于输送导电内管形式的井流体的流线，所述导管内管同心地被电导电保护外管和内管沿着海底管道的长度与外管电绝缘。管内海底管道沿其长度被连续地电加热，以将原油的温度维持在便于管道输送的水平上，该加热包括沿着内管的外表面和沿内管的内表面传递交流电流外管。以这种方式，原油可以保持在粘度不能防止有效和经济的管道输送的温度。

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