Wells – Submerged well – Riser
Reexamination Certificate
2007-04-27
2010-12-28
Beach, Thomas A (Department: 3671)
Wells
Submerged well
Riser
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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Shen Joseph J. S.
Yeung Hoi
Beach Thomas A
Buck Matthew R
Chevron U.S.A. Inc.
Gallo Nicholas F.
Northcutt Christopher
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