Patent ID: 7044227
Filing Date: 2006-05-16
Classification: E21B

Abstract:
1. A subsea wellhead assembly comprising: a tubular wellhead member having an exterior grooved profile and having an axis extending therethough; a passage extending through the wellhead member from an opening on an exterior portion of the wellhead member for communicating with a casing annulus; a wellhead connector adapted to be connected to a riser, that connects to the profile of the wellhead member, the wellhead connector connecting substantially coaxially with the tubular wellhead member; a communicator port extending through a side of the wellhead connector, which registers with the opening of the passage; and a seal ring located below the exterior profile, the seal ring slidingly engaging the wellhead member and being movable between an upper position and a lower position, the seal ring sealingly closes the opening of the passage while in its upper position and opens the opening of the passage when the seal ring is in its lower position.