Multiple diameter expandable straddle system

摘要

A tubular expansion system is configured to expand a tubular in a wellbore. The expansion system may include an expandable tubular having a lower section and an upper section; a first expansion member configured to expand the lower section; and a second expansion member configured to expand the upper section. The upper section may be expanded to have an inner diameter greater than an inner diameter of the expanded lower section. The second expansion member may be engaged and moved by the first expansion member and/or one or more support members to expand the upper section.

主权项

1. An expansion system for expanding a tubular in a wellbore, comprising:
an expandable tubular having a lower section and an upper section; a first expansion member configured to expand the lower section; and a second expansion member configured to expand the upper section to have an inner diameter greater than an inner diameter of the expanded lower section, wherein the first expansion member is moveable toward the second expansion member during expansion of at least a portion of the lower section while the second expansion member remains stationary, and wherein the first expansion member is moveable with the second expansion member during expansion of at least a portion of the upper section.