Subsea riser support and method for bridging escarpments

摘要

The present disclosure provides a lateral external sleeve for a riser that can be preinstalled or field installed around the riser as it is deployed onto the seabed and a stress joint installed with the riser and longitudinally partially within the lateral external sleeve. The external sleeve in conjunction with the stress joint can support a laterally deployed riser in an otherwise high stress zone of the riser as it would bend due to changes in elevations and thus reduce stress on the riser. The system can act independently of a buoy-based system typically used in the art.

主权项

1. A riser support system comprising:
an external sleeve coupled around a laterally disposed riser; and a stress joint coupled to the riser and disposed longitudinally at an end of the external sleeve having a portion inside the external sleeve, wherein an annular space is formed between the sleeve and the portion of the stress joint, the annular space configured to allow the portion of the stress joint to move radially within the sleeve.