Wellhead structure and method of producing same

Details Wellhead structure and method of producing same Wellhead structure and method of producing same

E - Fixed Constructions

21

B

166/47, 13/8

E21B 33/03 (2006.01) B22F 7/08 (2006.01) B32B 15/01 (2006.01)

Patent

CA 1259458

Abstract of the Disclosure A wellhead structure having a body of a martensitic alloy with opening therein and a austenitic cladding lining the openings wherein the body, the cladding and the interface therebetween all have a strength of at least 75,000 psi and a ductility of at least ten percent. The method of producing a wellhead structure with an alloy steel body having openings therein and a corrosion resistant alloy cladding lining the openings including the steps of lining openings with the cladding by hot isostatic pressure process wherein the temperature does not exceed 2200°F and the cycle is held at temperature for less than four hours.

473477

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