ENHANCED JACK FOR DRAWING A MANDREL

摘要

A system for expanding an expandable pipe in a wellbore comprises an expansion device, a support member supporting the expansion device, and a hydraulic jack system having a fixed first end and a second end engaging the expansion device, such that expansion of the jack moves the expansion device relative to the expandable pipe. A method for using the system comprises lowering the expandable pipe into the wellbore on the expansion device, expanding the claim so that it engages the inside of the expandable pipe, and expanding the jack so that the expansion device is pulled through a portion of the expandable pipe. The expandable pipe may be expanded such that the expanded portion engages the formation and the engagement of the expanded portion with the formation may be used to anchor the expandable pipe while an additional portion of the expandable pipe is expanded.