SLUGGING CONTROL - LATTICE INTELLECTUAL PROPERTY

Title:

SLUGGING CONTROL

Document Type and Number:

WIPO Patent Application WO2001053649

Kind Code:

A3

Abstract:

A method of controlling occurrence of severe slugging in a riser (6) of a pipeline arrangement (2) comprising a riser base (8) and pipeline (4) conveying a multiphase fluid system in which the gas phase may be natural gas. A valve (14) regulates the velocity of gas along the pipeline towards the riser. A pressure sensor (34) observes the gas pressure in the riser base (8) and if the observed pressure exceeds a pre-determined control pressure value a three term pressure indication control (38) causes the valve (14) to be operated to open to an extent which increases the gas outflow through the pipe (12) and thus increases the velocity of gas in the pipeline to avoid occurrence of severe slugging in the riser.

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Inventors:

MOLYNEUX PETER DAVID (GB)
KINVIG JOHN PAUL (GB)

Application Number:

PCT/GB2001/000108

Publication Date:

April 04, 2002

Filing Date:

January 12, 2001

Export Citation:

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Assignee:

LATTICE INTELLECTUAL PROPERTY (GB)
MOLYNEUX PETER DAVID (GB)
KINVIG JOHN PAUL (GB)

International Classes:

E21B43/01; E21B43/12; E21B43/34; F17D1/00; (IPC1-7): E21B43/01; E21B17/01; E21B43/34

Domestic Patent References:

WO1987001759A1	1987-03-26
WO1996000604A1	1996-01-11

Foreign References:

EP0331295A1	1989-09-06
US5478504A	1995-12-26
EP0410522A2	1991-01-30

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