Centek Centralizer | Centek delivers low cost and flexibility in a ultra deepwater well THE CHALLENGE A major operator drilling an exploratory well in record water depth off the coast of Uruguay required placement of a 13-5/8" casing string below a 17-7/8" liner. Being an exploration well, there was uncertainty whether downhole challenges would require a 16" contingency liner to be set between the 17-7/8" and 13-5/8" strings. Running the 13-5/8" directly through the 17-7/8" string would allow for a cost-effective centralization solution using conventional centralizers and stop rings, where the presence of the 16" liner would require centralizer subs in the 13-5/8" string. Prior to the introduction of the UROS-CT (Close Tolerance) centralizers and the Ace Ratchet Collar (ARC) the operator

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