Narrow band infrared water fraction apparatus for gas well...

G - Physics – 01 – N

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Details

G01N 21/35 (2006.01) G01F 1/74 (2006.01) G01N 33/28 (2006.01) G01V 8/10 (2006.01)

Patent

CA 2403616

A narrow band infrared water fraction meter (106) detects a full water cut range of a liquid hydrocarbon flow stream and a flow stream of a gas well. The water fraction meter (106) includes a light source probe (90) for irradiating the flow stream with a narrow band of infrared light and a light detector probe for sensing attenuation of infrared light passed through the flow stream (84). At a predetermined wavelength, the infrared light is substantially transmitted through gas content and liquid hydrocarbon content of the flow stream (84) and substantially absorbed by a water content of the flow stream. Injection of corrosion/hydrate inhibiting chemicals into the flow stream can be controlled based on the attenuation of infrared light detected by the water fraction meter (106). For a liquid hydrocarbon flow stream, the infrared light is substantially transmitted through its liquid hydrocarbon phase and substantially absorbed by its water phase.

Un mètre (106) infrarouge de fractionnement aqueux à bande étroite détecte toute une gamme coupée aqueuse d'un flux d'un hydrocarbure liquide et d'un flux d'un puits de gaz. Ledit mètre (106) comprend une sonde de source de lumière (90) permettant d'irradier le flux avec une bande étroire de lumière infrarouge et une sonde de détecteur de lumière permettant de détecter l'atténuation de la lumière infrarouge traversant le flux (84). A une longueur d'onde prédéterminée, la lumière infrarouge est transmise à travers un contenu gazeux et un contenu d'hydrocarbure liquide du flux (84) et cette lumière est absorbée par le contenu aqueux du flux. L'injection de produits chimiques d'inhibition de la corrosion/d'hydrate peut être contrôlée en fonction de l'atténuation de la lumière infrarouge décelée par ledit mètre (106). Pour un flux d'hydrocarbure liquide, la lumière infrarouge est transmise au cours de sa phase d'hydrocarbure liquide et est absorbée par sa phase aqueuse.

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