Patent ID: 8156799
Filing Date: 2012-04-17
Classification: E21B

Abstract:
1. A logging tool for a borehole, the logging tool comprising: a tool body having a long axis; a sensor pad having a pad long axis parallel to the tool body long axis; an arm assembly coupling the sensor pad to the tool body, wherein the arm assembly is pivotably attached to the tool body, wherein a pivot axis of the arm assembly is orthogonal to the long axis of the tool body, and wherein the sensor pad is movable radially inward toward or outward from the tool body as the arm assembly is pivoted on the pivot axis; and a first stationary tool segment; a rotatable tool segment; and a first rotary joint coupling a first end of the rotatable tool segment to a first end of the first stationary tool segment, wherein the rotatable tool segment is azimuthally rotatable around the long axis of the tool body with respect to the first stationary tool segment, and wherein the arm assembly is mounted on the rotatable tool segment.