Patent ID: 6991040

Claim:
A lockout tool for locking a subsurface safety valve in the open position, wherein the safety valve comprises a pressure containing body having a bore therethrough, a valve closure member disposed in the bore moving between an open and a closed position, a flow tube axially moveable in the body, a non-moveable seat adjacent the valve closure member, and an actuating means for translating the flow tube longitudinally in the bore, said lockout tool comprising: an elongated housing adapted to fit inside the subsurface safety valve; a mandrel moveable in the housing; at least one dog, which, upon controlled movement of the mandrel, engages and moves the flow tube in a direction to place the valve closure member in its open position; and a plurality of expander points in substantially circumferential arrangement inside the housing, and adapted to move into radial engagement with an inside diameter of the flow tube after the at least one dog has moved the flow tube to open the valve closure member in its open position, said expander points being urged to move radially outward with sufficient force to yield and expand a diametrical portion of the flow tube into engagement with the non-moveable seat in the safety valve, thereby permanently locking the valve closure member in the open position.