Patent ID: 8613331
Filing Date: 2013-12-24
Classification: E21B

Abstract:
1. A method of selectively actuating a downhole tool, wherein the downhole tool comprises a tubular body with an axial borehole therethrough and at least one expandable component, the method comprising: increasing a flow rate of a circulating fluid in the axial borehole of the downhole tool to reach a specified circulating fluid pressure; detecting an increased circulating fluid pressure in the borehole of the tool with at least one sensor; actuating a motor to operate a pump, thereby sending a fluid to operate a sliding sleeve disposed in the axial borehole; operating the sliding sleeve to open an actuation chamber port in response to the increased circulating fluid pressure in the borehole of the tool, thereby filling an actuation chamber with the circulating fluid; moving the at least one expandable component radially outward; increasing the flow rate of the fluid down through the axial borehole to a specified circulating fluid pressure; detecting an increase of pressure in the fluid in the axial borehole of the downhole tool; and operating the sleeve disposed in the axial borehole of the downhole tool to close the actuation chamber port, thereby allowing the at least one expandable component to retract.