Piggable flowline-riser system

Details Piggable flowline-riser system Piggable flowline-riser system

2004-09-20

2008-09-23

Beach, Thomas A (Department: 3671)

Wells

Submerged well

With provision for disassembly

C166S368000, C166S070000

Reexamination Certificate

active

07426963

ABSTRACT:
This invention relates to a flowline-riser production system for the recovery of hydrocarbons from offshore wells, and a method for pigging the interior surfaces of the riser and flowlines. More particularly, this invention is a piggable flowline-riser system in which a pig is launched from or near a host production facility, down a riser into a looped flowline and returned up through the same riser. According to one embodiment of the invention, there is a piggable flowline-riser system for producing hydrocarbons comprising a riser, a “Y” joint and a looped flowline, wherein the looped flowline is in fluid communication with at least one subsea well.

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