Invention Grant
- Patent Title: Method and apparatus for elevating the tapered stress joint or flex joint of an SCR above the water
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Application No.: US14958140Application Date: 2015-12-03
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Publication No.: US09988860B2Publication Date: 2018-06-05
- Inventor: Amir Salem , Thomas Prichard
- Applicant: Single Buoy Moorings, Inc.
- Applicant Address: CH Marly
- Assignee: Single Buoy Moorings, Inc.
- Current Assignee: Single Buoy Moorings, Inc.
- Current Assignee Address: CH Marly
- Agency: Blank Rome LLP
- Main IPC: E21B17/01
- IPC: E21B17/01 ; E21B19/00

Abstract:
A removable riser hang-off connector is equipped with a flexible element that, in one embodiment, comprises rubber-encapsulated steel plates. The connector is designed for attachment to a hang-off collar provided on a steel catenary riser below the tapered stress joint or flex joint. Connection of the removable riser hang-off connector may be made by an ROV. With the removable riser hang-off connector attached, the tapered stress joint and/or flex joint may be raised out of the water (for inspection, maintenance, repair or replacement) by lifting the upper end of the SCR out of its porch receptacle with a chain jack (or other lifting device) and inserting the removable riser hang-off connector into the porch receptacle. This temporarily supports the SCR in an elevated state with the tapered stress joint and/or flex joint above the surface of the water.
Public/Granted literature
- US20170159377A1 Method and apparatus for elevating the tapered stress joint or flex joint of an SCR above the water Public/Granted day:2017-06-08
Information query