Method and system for suppressing and controlling slug flow...

E - Fixed Constructions – 21 – B

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E21B 43/12 (2006.01) B01D 19/00 (2006.01) E21B 43/36 (2006.01) F17D 1/20 (2006.01) E21B 43/01 (2006.01)

Patent

CA 2389018

A method and system for suppressing and controlling liquid slugs and gas surges in a multiphase fluid flow line make use of a gas liquid separator (9) and a gas valve (16) in the gas outlet (14) and a liquid valve (15) in the liquid outlet (13) of said separators, which valves (15, 16) are adjusted automatically in response to variations of one of more selected control variables, such as Q GAS, Q Liquid, Q Liquid+Q gas, L liquid, P, and the control variable is changed automatically from time to time if one or more selected control variables reaches a pre-set threshold value.

On décrit un procédé et un système permettant de supprimer et de réguler des bouchons de liquide et des poussées de gaz dans une ligne d'écoulement de fluide multiphase qui utilisent un séparateur gaz-liquide (9) et une soupape à gaz (16) prévue dans la sortie (14) de gaz et une soupape à liquide (15) prévue dans la sortie (13) de liquide des séparateurs, ces soupapes (15,16) étant ajustées automatiquement en réponse aux variations d'une ou plusieurs variables de commande sélectionnées telles que QGAZ, QLiquide, QLiquide+Qgaz, Lliquide, P, la variable de commande étant changée automatiquement de temps en temps si au moins une des variables de commande sélectionnées atteint une valeur de seuil préétablie.

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