Multiple-set packer and method
A multiple-set packer assembly is described for selectively positioning within a well bore to seal the annulus between interior walls of the well bore and a tubing string. It consists of: a flexible tubular packer body radially expandable and retractable for contact with and release from the interior walls of the well bore; a control sub secured to the packer body and having an interior guide wall, a recessed cavity radially outward of the guide wall, and a flow path in pressure communication with the packer body whereby the packer body may be radially expanded by fluid pressure in the flow path in the control sub; a sleeve axially movable within the control sub, the sleeve having a cylindrical-shaped interior surface having a selectively sized diameter slightly larger than the diameter of the ball, and having a port for fluid communication between the passageway in the tubing string and the flow path in the control sub when the sleeve is in the ballstop position; a seal for automatically closing off communication between the passageway in the tubing string and the flow path in the control sub when the sleeve is in the ball release position; and a stop member carried by the sleeve and radially movable from an inward position such that the ball is axially stopped by the stop member within the cylindrical shaped interior surface of the sleeve, to an outward position such that the axially by the sleeve and the stop member. A method for positioning the assembly is also described.
- Assignee:
- TAM International, Inc., Houston, TX
- Patent Number(s):
- US 4823882
- OSTI ID:
- 5876075
- Resource Relation:
- Patent File Date: Filed date 8 Jun 1988
- Country of Publication:
- United States
- Language:
- English
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