Top tensioned riser adaptor

摘要

An adaptor for a top tensioned riser that allows the riser to be tied in with wellheads beyond the normal range of the top tensioned riser. An adaptor spool attaches between the top tensioned riser and the subsea wellhead. An adaptor spool hanger may land in the adaptor spool. The adaptor spool is provided with a side penetration to which a flow line may be connected. The flow line is provided with a connector that connects to a production line from a remote location. This allows the fluid production to flow from the remote location through the existing top tensioned riser to the host facility. The tieback connector/stress joint may also be provided with a flow line prepared to accept remote field tiebacks, which are also piggable.