Rotary sleeve to control annular flow
Abstract:
A wellbore completion system includes a container for delivering plugs or other objects to a wellbore. The container includes a sleeve having a sealing surface at a first end and a geared interface at a second, opposing end. The sealing surface includes voids or apertures that align with or obstruct apertures in a diverter plate, depending on the position of the sleeve, to permit or obstruct annular flow around the sleeve, respectively. A ball valve is coupled to the second, opposing end of the sleeve, and has a valve-geared interface that engages the geared interface of the sleeve. A releasable object, such as a cement wiper plug, may be stored within the conduit of the sleeve. The geared interface relates movement of the ball valve to movement of the sleeve, resulting in simultaneous opening of the valve, closing of the annular flow path, and release of the releasable object.
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