Well screen inflow control device with check valve flow controls
AssigneeHalliburton Energy Services, Inc.
InventorsWilliam M. Richards, John C. Gano
Life of this patent
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Abstract
A well screen inflow control device with check valve flow controls. A well screen assembly includes a filter portion and a flow control device which varies a resistance to flow of fluid in response to a change in velocity of the fluid. Another well screen assembly includes a filter portion and a flow resistance device which decreases a resistance to flow of fluid in response to a predetermined stimulus applied from a remote location. Yet another well screen assembly includes a filter portion and a valve including an actuator having a piston which displaces in response to a pressure differential to thereby selectively permit and prevent flow of fluid through the valve.
Claims5
A well screen assembly, comprising:
- a base pipe;
- a filter portion which filters a fluid prior to the fluid entering the base pipe;
- and
- a flow control portion which selectively decreases a resistance to flow of the fluid through the well screen assembly into the base pipe in a first direction in response to a predetermined stimulus applied from a remote location, and which prevents outward fluid flow through the well screen assembly in response to flow of the fluid in a second direction opposite from the first direction,
- wherein the stimulus comprises an increase in a pressure within the base pipe.
Dependencies are inferred from the claim text.