Patent ID: 6095242
Filing Date: 2000-08-01
Classification: E21B

Abstract:
A centralizer assembly for a casing string within a casing head comprising,a centralizer bowl (12) with curved tapered inner surfaces, said centralizer bowl being arranged and designed to be placed about said casing string and supported from a landing shoulder within said casing head while defining an annular space between said tapered surfaces and said casing string,centralizer segments (14) placed in said annular space and having smooth inner surfaces which are substantially coaxial with and matching the radial curvature of said casing string and having tapered outer surfaces (28) which match the taper and curvatures of said inner surfaces of said centralizer bowl, andenergizing screws (24) extending through said centralizer bowl (12) and engaging said centralized segments (24) for forcing said centralizer segments into said annular space in a wedging relationship between said casing string and said tapered inner surfaces thereby removing radial looseness and clearance between said casing string and said casing head.