Patent ID: 6374914
Filing Date: 2002-04-23
Classification: E21B

Abstract:
A centralizer for guiding a tool or the like through the bore of a first member having a central axis and into a radially eccentric position within a second member positioned below the first member, the centralizer comprising:a mandrel having a top end which is connected to a running string and a bottom end to which the tool is connected; a collar having an axial centerline and at least one eccentric hole through which the mandrel extends; means for rotatably connecting the collar to the mandrel; means for maintaining the axial centerline of the collar proximate the central axis of the first member as the tool is lowered through the bore; wherein the distance from the axial centerline to the center of the eccentric hole is selected to be approximately equal to the radial distance between the central axis and the radially eccentric position; whereby the centralizer maintain s the tool in alignment with the radially eccentric position as the tool is being lowered through the bore.