Apparatus to actuate a downhole tool
AssigneeWeatherford/Lamb, Inc.
InventorsDavid J. Brunnert, Thurman H. Carter, David M. Haugen, Gary D. Ingram, David W. Teale
Life of this patent
Estimating the term…
Abstract
The invention provides an apparatus for actuating a downhole tool by utilizing a pressure differential created by fluid flowing through a conduit. The conduit is in communication with a pressure sensing line that is selectively exposable to areas of the conduit having different pressures. By exposing the pressure sensing line to a portion of the conduit having a predetermined pressure therein, the pressure sensing line cause actuation of a hydraulic tool therebelow.
Claims42
An apparatus for actuating a downhole tool comprising:
- a conduit for flowing fluid therethrough;
- a restriction disposed within the conduit, the restriction movable from a first position to a second position;
- a pressure line in selective fluid communication with a portion of the conduit above the restriction;
- and
- an actuation assembly in fluid communication with the pressure line for actuating the downhole tool.
An apparatus for use in a wellbore, comprising:
- a tubular member having conduit for flowing fluid therethrough;
- a restriction disposed in a first position within the conduit, the restriction movable from a first position to a second position when a pressure in the conduit is increased to a predetermined level;
- a pressure line attached to the tubular member, wherein the pressure line is in fluid communication with a portion of the conduit above the restriction when the restriction is at the second position;
- and
- an actuating member in fluid communication with the pressure line for actuating the downhole tool.
A method for selectively actuating a downhole tool, comprising:
- flowing a fluid through a conduit;
- restricting the fluid flow through a portion of the conduit;
- increasing the fluid flow in the conduit to cause a pressure line to be in fluid communication with the conduit;
- communicating the fluid flow through the pressure line to an actuation member;
- and
- actuating the downhole tool.
An apparatus for actuating a downhole tool comprising:
- a first conduit for flowing fluid therethrough;
- a pressure sensing line in communication with the first conduit;
- and
- the pressure sensing line sensing pressure in the first conduit and communicating a predetermined pressure to actuate the downhole tool while fluid flow is maintained through the first conduit.
Dependencies are inferred from the claim text.