Patent ID: 6681860
Filing Date: 2004-01-27
Classification: E21B

Abstract:
A retrievable hydraulically operated tool for running in a wellbore to perform a downhole tool activation, the tool comprising:a running tool tubular body for suspending in the wellbore from a conveyance tubular, such that fluid may be circulated through a bore in the conveyance tubular and in the tubular body, the tubular body including a fluid inlet port from the bore in the tubular body; a fluid pressure responsive member in fluid communication with the fluid inlet port and moveable relative to the tubular body from an initial position to an activated position in response to fluid pressure within the tubular body; a port closure member moveable with respect to the tubular body from a port isolation position to an open port position, the port closure member in the port isolation position blocking fluid communication from the bore in the tubular body, and permitting fluid communication from the bore in the tubular body through the fluid inlet port when in the open port position; a seat supported on the port closure member, such that an increase in fluid pressure to the fluid inlet port when a plug lands on the seat shifts the port closure member from the port isolation position to the open port position in response to fluid pressure above the landed plug; and a plug release mechanism for releasing the plug after the port closure member has moved to the open port position.