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US 2011/0030965 A1Published application
Downhole Screen with Valve Feature
OwnerMartin P. Coronadoinventor
Life of this patent
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Abstract
A screen assembly for downhole uses features screen sections that have a valve associated with the screen base pipe. Flow through the screen has to go into an annular space to reach one or more ports on the base pipe over which is located a sliding sleeve. The sliding sleeve is preferably located at an axially spaced location from the screen and its underlying base pipe to allow the presence of the sliding sleeve to be located in a recess avoiding a drift diameter reduction in the screen assembly.
Claims14
A screen assembly for subterranean use, comprising:
- a base pipe defining a main bore having a drift dimension;
- a screen mounted over said base pipe defining a flow passage outside said base pipe;
- a valve member for selective communication of said flow passage to said main bore, said valve member in said bore without reducing its drift dimension.
The assembly of claim 1, wherein:
- said valve member comprises a sliding sleeve.
The assembly of claim 5, wherein:
- said sliding sleeve is movable between travel stops that define a recess where said sliding sleeve is mounted.
Dependencies are inferred from the claim text.