Annular fluid manipulation in lined tubular systems to...

G - Physics – 05 – D

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G05D 7/00 (2006.01) F16L 59/14 (2006.01) F17D 5/04 (2006.01) G01M 3/28 (2006.01) G05D 11/02 (2006.01) G05D 11/03 (2006.01) G05D 21/00 (2006.01)

Patent

CA 2377165

A method of treating fluids in an annulus (18), comprising the steps of: providing a fluid-circulation annulus (18) between a host tubular (10) and a liner (17) therein; and manipulating fluids in the annulus (18) so that the relative proportions of fluid components in the annular fluid correspond to the relative permeation rates of the fluid components from the bore to the annulus (18). The method may further comprise the steps of: detecting an undesired fluid in the annulus (18); and manipulating the annular fluids in response to the undesired fluid, so that the relative proportions of fluid components in the annular fluid, including the undesired fluid, correspond to the relative permeation rates of the fluid components from the bore to the annulus (18). In a case where the undesired fluid has potential for harm to the host tubular (10), the manipulating step may reduce the potential for harm.

La présente invention concerne un procédé de traitement de fluides dans un espace annulaire (18), consistant à: fournir un espace annulaire (18) de circulation de fluide entre un tubage hôte (10) et une garniture (17) contenue dans ce tubage; et manipuler les fluides dans l'espace annulaire (18) de manière à ce que les proportions relatives des composants fluidiques dans le fluide annulaire correspondent aux vitesses de pénétration relatives des composants fluidiques du sondage à l'espace annulaire (18). Ce procédé peut également consister à: détecter un fluide indésirable dans l'espace annulaire (18); et manipuler les fluides annulaires en réponse au fluide indésirable, de manière à ce que les proportions relatives des composants fluidiques dans le fluide annulaire, y compris le fluide indésirable, correspondent aux vitesses de pénétration relatives des composants fluidiques du sondage à l'espace annulaire (18). Dans le cas où le fluide indésirable présente un danger potentiel pour le tubage hôte (10), l'opération de manipulation peut réduire le danger potentiel.

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