Patent ID: 8657530
Filing Date: 2014-02-25
Classification: B66C,E21B

Abstract:
1. A device for retrieving a subsea tubular, comprising: a housing having a housing first end and an opened end opposite the housing first end; a receiving body slidingly disposed within the housing, wherein the body has a central axis, a body first end proximal the housing first end, a body second end proximal the opened end of the housing, and a receptacle extending axially from the body second end; an actuation member coupled to the housing and the body, wherein the actuation member is configured to move the housing axially relative to the body; a plurality of cam members, wherein each cam member is rotatably coupled to the body second end and has a longitudinal axis, a cam head at a first end of the cam member and extending radially into the receptacle, and a lever arm extending from the cam head to a second end of the cam member opposite the first end of the cam member; wherein each cam member is configured to rotate in a first direction to move the cam head radially inward relative to the central axis and rotate in a second direction opposite the first direction to move the cam head radially outward relative to the central axis; wherein the opened end of the housing axially abuts the lever arm of each cam member; and a plurality of biasing members, each biasing member being coupled to the lever arm of one cam member and configured to bias the cam member in the first direction.