subsea centralizer to cement a tubular column into a wellbore and method for using the centralizer

摘要

subsea centralizer to cement a tubular column into a wellbore and method for using the centralizer. The present invention relates to an underwater centralizer for cementing a tubular column into a wellbore which includes: a tubular body; a centralizer disposed along an outer body surface and having a pair of collars and a plurality of arcuate springs connecting the collars; and a joint longitudinally connecting the centralizer to the body. the joint has: a groove formed in and around the outer surface of the body, and a plurality of projections formed integrally with or mounted on one of the collars and extending into the groove.