Patent ID: 7793733
Filing Date: 2010-09-14
Classification: E21B

Abstract:
1. An actuator device for actuating a downhole tool, the actuator device comprising: a tubular member having a first reservoir, a second reservoir and a port disposed through a wall of the tubular member thereby placing the first reservoir in fluid communication with an environment outside the tubular member; a valve disposed within the tubular member between the first reservoir and the second reservoir, the valve at least partially separating the first reservoir from the second reservoir for selectively limiting fluid flow from the first reservoir to the second reservoir; and an actuator disposed in the first reservoir, the actuator comprising a first actuation area, a second actuation area, a run-in position and set position, the run-in position comprising the first actuation area of the actuator being in fluid communication with the port and the second actuation area of the actuator being sealed off from fluid communication with the port, and the set position comprising the second actuation area of the actuator being in fluid communication with the port.