Subsea wellhead connector

Details Subsea wellhead connector Subsea wellhead connector

E - Fixed Constructions

21

B

166/46.3

E21B 43/00 (2006.01) E21B 33/038 (2006.01)

Patent

CA 1224410

ABSTRACT OF THE DISCLOSURE A pipe connector specially suitable for interconnecting a marine riser to a subsea wellhead, the connector comprising an annular body that telescopes over the wellhead, and a plurality of lockdown screw assemblies extending through radial ports in the body to releasably grip and secure the connector to the wellhead. Each screw assembly comprises a lockdown dog for engaging the recess beneath the wellhead hub flange, a bolt-like dog retainer secured to the dog and slidably extending into a lockdown screw that is threaded into one of the radial ports, and a spring system for biasing the dog away from the lockdown screw towards engagement with the wellhead.

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