Downhole tools, system and method of using

摘要

The present disclosure relates to downhole tools, including downhole valves, which actuate via a pressure differential created across a shifting element having one or more pressure surfaces isolated from fluid, and fluid pressure, flowing through the interior flowpath. Embodiment downhole tools of the present disclosure may actuate in response to, among other signals, fluid pressure in the interior flowpath of the tool and fluid pressure communicated to a pressure surface of the shifting sleeve from the exterior of the tool. Certain embodiments may also have an outlet connector whereby fluid pressure from the downhole tool may be communicated to its exterior, including to additional tools in the tubing strings via flowlines connecting the two tools.

主权项

1. A downhole a tool having an interior flowpath and an exterior comprising:
an inner sleeve; a housing positioned outwardly of said inner sleeve, said housing and said inner sleeve partially defining a first space therebetween and a second space therebetween; an input connector defining an opening to a first passageway that enables fluid communication from the exterior of the housing to said first space; an output connector defining an opening to a second passageway that enables fluid communication from the exterior of the housing to the second space; a shifting sleeve positioned between the housing and the inner sleeve, the shifting sleeve partially defining the first space; wherein said shifting sleeve is selectively moveable from a first position to a second position in response to a predetermined fluid pressure in said passageway; and movement of the shifting sleeve to the second position establishes fluid communication between the interior flowpath and the output connector.