DISCONNECTING TOOL

摘要

A downhole system includes an upper casing that is connected to a lower casing via an annular barrier that expands upon application of pressurized fluid. The lower casing may also include additional annular barriers to fasten the lower casing relative to the borehole.

主权项

1. A downhole system for deployment in a borehole, the downhole system comprising:
an upper casing having an inside surface; and a lower casing having a first annular barrier including a first expandable metal sleeve, the first expandable metal sleeve being expandable upon the application of pressurized fluid to engage the inside surface of the upper casing, to fasten the lower casing to the upper casing.