Pipe string tie-back connector

Details Pipe string tie-back connector Pipe string tie-back connector

E - Fixed Constructions

21

B

166/51.3

E21B 41/00 (2006.01) E21B 33/038 (2006.01)

Patent

CA 1205741

ABSTRACT OF THE DISCLOSURE A pipe connector for establishing a remote connection between a riser pipe and a subsea wellhead. The connector comprises a plurality of annular elements interconnected by a differential thread system which facilitates making up and breaking the riser-wellhead connection from a drilling platform or other surface location without rotation of the riser or diver assist. The preferred embodiment also includes a provision for establishing a metal-to-metal seal between the connector and the wellhead, and a guide assembly to assure proper alignment of the connector with the wellhead prior to completing the connection.

438908

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