Patent ID: 7021389
Filing Date: 2006-04-04
Classification: E21B

Abstract:
1. A fluid control system for a hydrocarbon well, comprising: a first portion of the control system; an actuator coupled to the first portion; an inner sleeve slidably disposed inside the first portion and forming a longitudinal passageway; a seat coupled to the control system and exposed to the passageway; a passageway seal coupled to the inner sleeve and exposed to the passageway; and a radial protrusion disposed at least partially in the inner sleeve and distal from the seat relative to the passageway seal, the radial protrusion initially biased in a position retracted from or a position extending into the passageway and adapted to have a radial position retracted from the passageway and another radial position extended into the passageway, the radial positions determined by engagement of the protrusion with the actuator, the seat and the radial protrusion being adapted to selectively restrict in at least one direction movement of a movable restriction through the passageway, and the control system adapted to selectively restrict flow in at least one direction by sealing engagement with the movable restriction inserted in the passageway.