Patent attributes
Method and apparatus for a hydraulic jet pump housing system for selective positioning of a slidable, ported inner sleeve using wireline shifting tools in a downhole condition which allows flow between the annulus and tubing string through the ported outer sleeve housing and ported inner sleeve when in the open position. When the ported inner sleeve is in the closed position, the annulus and tubing string are isolated from each other. The open position permits normal functioning of a hydraulic jet pump when seated in a standing valve in the same manner as a conventional hydraulic jet pump cavity assembly. The hydraulic jet pump can be extracted and inner sleeve shifted closed without using a blanking tool so that annular fluids are prevented from flowing into the production formation through the tubing string when the standing valve is removed.
