Inner guide seal assembly for a ram type bop system

Details Inner guide seal assembly for a ram type bop system Inner guide seal assembly for a ram type bop system

E - Fixed Constructions

21

B

E21B 33/06 (2006.01)

Patent

CA 2619483

An improved ram inner seal assembly used in ram-type BOPs is disclosed. The disclosed invention provides an inner guide seal assembly that comprises a specially shaped guide body and a separate sealing element. When the ram-type BOP is closed, two opposing rams move toward one another, and the inner guide seal assembly guides a wireline (or other tubular) toward the center of the vertical bore through the BOP. The inner guide seal assembly's proximity to the ram body's centerline axis helps ensure that a positive seal is formed and that no damage occurs to the device in the central bore of the BOP. The separate, specially-shaped sealing element can be easily inserted into and removed from the guide body of the inner guide seal assembly for easy replacement.

L'invention porte sur un joint intérieur de bélier utilisé dans les blocs d'obturations (BOP), et sur un joint intérieur de guidage comportant un élément d'étanchéité de forme spéciale présentant un corps et un élément séparé d'étanchéité. Quand le BOP est fermé ses deux mâchoires opposées se rapprochent et le joint guide un fil de ligne (ou tout élément tubulaire) vers le centre de l'alésage central du BOP. La proximité du joint intérieur de guidage de l'axe central du corps du bélier contribue à assurer la formation d'un joint positif et à interdire tout dommage à un élément situé dans l'alésage central du BOP. L'élément d'étanchéité séparé et de forme spéciale peut facilement s'introduire ou se retirer du corps de guidage du joint intérieur de guidage en vue de son remplacement.

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