Patent ID: 8430163

Claim:
An acoustic sensing tool for use with a carrier having an exterior surface disposed in a wellbore, the acoustic sensing tool comprising: a base adapted to engage the carrier; a resilient clamp disposed around the base and defining an interior surface and an exterior surface, the clamp being movable between a retracted position, in which the clamp interior surface engages the exterior surface of the carrier, and an expanded position, in which the champ exterior surface engages the wellbore; a spring element that is in direct contact with the clamp a sensor housing coupled to the clamp; a sensor disposed in the sensor housing; and an actuator movable along the base and operably coupled to the clamp, the actuator being operable to move the clamp between the retracted and expanded positions and configured to maintain contact with the clamp in both the retracted and expanded positions so that movement of the actuator in a first direction causes the housing to move to the expanded position, and movement of the actuator in a second, opposite direction causes the housing to move to the retracted position.