Apparatus for mitigating slugging in flowline systems

Wells – Submerged well – Riser

Reexamination Certificate

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Details

C166S344000, C166S345000, C166S346000, C166S347000, C285S181000, C138S120000, C138S155000, C138SDIG010

Reexamination Certificate

active

07857059

ABSTRACT:
A system for mitigating slugging in the conveyance of hydrocarbons in a flowline includes a first portion of flowline that extends substantially longitudinally along a declining surface. The first flowline portion carries multiphase hydrocarbons. A second portion of flowline extends upward from adjacent the first portion of flowline, and is in fluid communication with the first portion of flowline. A slug-mitigating region is between the first and second portions of flowline so slug-mitigating assembly receives the hydrocarbons from the first portion of flowline and conveys the hydrocarbons to the second portion of flowline. The slug-mitigating region has consecutively joined tubular segments that are each arcuate along a predetermined arcuate angle, with substantially uniform cross-sections. The first portion of flowline can be a subsea flowline extending along a sea floor, and the second portion of flowline can be a riser.

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