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Disconnectable Floating Production System with Dry Connections

IP.com Disclosure Number: IPCOM000246442D
Publication Date: 2016-Jun-07
Document File: 1 page(s) / 50K

Publishing Venue

The IP.com Prior Art Database

Abstract

A floater with a moon-pool to accommodate a disconnectable buoy is proposed. Risers, umbilicals and mooring lines are terminated on top of the disconnectable buoy and stay dry while the buoy is connected with the floater. The floater and the buoy, when connected, forms a moored floating production system. When disconnected, the buoy submerges to a target water depth from the floater and the floater may drift away, to avoid situations such as collision with an iceberg.

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Disconnectable Floating Production System with Dry Connections

Abstract: A floater with a moon-pool to accommodate a disconnectable buoy is proposed. Risers, umbilicals and mooring lines are terminated on top of the disconnectable buoy and stay dry while the buoy is connected with the floater. The floater and the buoy, when connected, forms a moored floating production system. When disconnected, the buoy submerges to a target water depth from the floater and the floater may drift away, to avoid situations such as collision with an iceberg.

A single column floater and the buoy-mooring-lines-risers-umbilicals system, when connected, form a floating production system (Figure 1). Upon disconnection, the floater, supporting its topside payload, can leave the site. The buoy, supporting the mooring lines, risers and umbilicals, will be submerged to a target depth (Figure 2). Design configurations of mooring lines (including buoys), risers and umbilicals, and ballast in the disconnectable buoy can be performed as needed, and will manage the range of the depth of the buoy. Buoy elevation and interface with the hull can be managed through ballasting and deballasting the buoy. Alignment can be achieved through slots in the hull and "pins" on the outside of the buoy. The need for winch capacity can be modest. All connections can be terminated dry on top of the buoy. Dry connections will enable easier functional tests and maintenance. Pig launcher and manifolds can be placed...