| abstract |
An expandable tubular member 2530 is anchored to a wellbore casing 2500 by injecting a fluid 2580 into a chamber 2540, the fluid having a density greater than that of a fluid within region 2585 outside of the expandable tubular member 2530. The difference in hydrostatic pressure between the chamber 2540 and the region 2585, due to the differences in fluid densities in these regions, causes the expandable tubular member 2530 to be radially expanded by, and extruded off expansion cone 2535. In another embodiment a tubular member is expanded by driving the tubular member onto an expansion cone in a first direction and axially displacing the expansion cone in a second direction relative to the tubular member, wherein the first and second directions are different. |