TELEMETRY OPERATED EXPANDABLE LINER SYSTEM

摘要

A deployment assembly for expanding a liner string in a wellbore includes: a tubular mandrel having a bore therethrough; an expander linked to the mandrel and operable between an extended position and a retracted position; an extension tool disposed along the mandrel and operable to extend the expander; and a retraction tool disposed along the mandrel. The retraction tool has: an upper piston in fluid communication with the mandrel bore and operable to retract the expander; a lower piston in fluid communication with the mandrel bore and operable to balance the upper piston; a valve disposed between the pistons for isolating the lower piston from the upper piston in a closed position; and an electronics package linked to the valve for opening and closing the valve in response to receiving a command signal.

主权项

1. A deployment assembly for expanding a liner string in a wellbore, comprising:
a tubular mandrel having a bore therethrough; an expander linked to the mandrel and operable between an extended position and a retracted position; an extension tool disposed along the mandrel and operable to extend the expander; and a retraction tool disposed along the mandrel and having:
an upper piston in fluid communication with the mandrel bore and operable to retract the expander;a lower piston in fluid communication with the mandrel bore and operable to balance the upper piston;a valve disposed between the pistons for isolating the lower piston from the upper piston in a closed position; andan electronics package linked to the valve for closing the valve in response to receiving a command signal.