InterMoor's installation of a permanent mooring and riser system on NHSK FSOU in the Lufeng Oilfield - Oilfield Technology Article Jan 2013

Kashif Iqbal and Colin Ellis, InterMoor Pte, Singapore, provide an overview of the installation of a permanent mooring system for a floating storage and offloading unit.

In their 2013 forecasts, analysts have confirmed a significant recovery in the floaters market (FPSO & FSO) with most of the growth coming from the Asia Pacific region. Of the seven global oil-producing regions, Asia Pacific has seen the most fields discovered and brought onstream for the last 10 years.

Last year, InterMoor completed the installation of a permanent mooring and riser system for the NanHai Sheng Kai floating storage and offloading unit (NHSK FSOU) in the Lufeng oilfield, South China Sea. This project was the company’s fi rst project for Chinese installation contractor China Offshore Oil Engineering Co. Ltd (COOEC), a subsidiary of the China National Offshore Oil Corp., CNOOC Ltd.

The NHSK FSOU was moored with a single point mooring (SPM) in a water depth of 142 m using a dis-connectable buoy turret mooring system. The existing mooring system at LF 13-1 had been in service since 1992, far beyond its original design life of 12 years, and had begun to deteriorate and corrode. In order to facilitate continual production of the Lufeng field in a safe and reliable manner and support future field developments such as the LF7-2 oilfield (to be developed in 2013), the field operator, CNOOC Ltd, extended the service life of the FSOU for another 15 years by upgrading and relocating its mooring system to LF 13-2 oilfield.

The project took place over a six month period and was completed with a six man onshore team based at COOEC’s offi ces in Shekou, China and a 12 man offshore team based on the two installation vessels used for the project. 

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