E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 21/10 (2006.01) E21B 33/14 (2006.01)
Patent
CA 2632182
A method for cementing a casing (4) in a wellbore, the method having the following steps: attaching a valve (1) to a casing; locking the valve in an open configuration; running the casing and the valve into the wellbore; reverse circulating a cement composition (22) down an annulus defined between the casing and the wellbore; injecting a plurality of plugs (20) into the annulus; unlocking the valve with the plurality of plugs; and closing the valve.
La présente invention concerne un procédé de cimentation d~un tubage (4) dans un sondage, le procédé comportant les étapes suivantes consistant à : fixer une soupape (1) à un tubage ; verrouiller la soupape dans une configuration ouverte ; mettre le tubage et la soupape dans le sondage ; faire circuler de façon inverse une composition de ciment (22) vers le bas dans un espace annulaire défini entre le tubage et le sondage ; injecter une pluralité de bouchons (20) dans l~espace annulaire ; déverrouiller la soupape avec la pluralité de bouchons ; et fermer la soupape.
Rogers Henry E.
Webb Earl D.
Halliburton Energy Services Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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