Patent ID: 8069916
Filing Date: 2011-12-06
Classification: E21B

Abstract:
1. A system for expanding tubing in a wellbore, comprising: an expander disposed on a work string and having a first extended configuration capable of expanding the tubing and a second collapsed configuration with a smaller outer diameter than the first extended configuration; first and second tubing holding devices disposed on the work string and located respectively ahead of the expander and behind the expander, wherein the expander is movable relative to each of the first and second tubing holding devices while the second tubing holding device is non-releasably coupled to the work string during operation downhole, and wherein at least a portion of the expander and the second tubing holding device are initially disposed below the tubing as the system is run into the wellbore; and a hydraulic operated jack coupled to the expander and configured to move the expander relative to each of the first and second tubing holding devices.