Floatover installation succeeds for Nan Bao 35-2 topsides ///
A challenging, float-over installation of a large topsides at CNOOC’s Nan Bao oil field in Bohai Bay has proven the method further and paved the way for additional projects
Nan Bao oil field is in Block 35-2, in the middle of Bohai Bay by northern China. The site is about 100 nautical miles northeast of Tanggu. The NB35-2 oil field consists of one central production platform (CEP) with 40 slots in the North Area and one wellhead platform (WHPB) with 40 slots in the South Area. In the latter area, the water depth in which the CEP stands is 13.2 m (43.3 ft), referenced to chart data.
The offshore installations also include a 4.57-km (2.84-mi), multiphase, subsea transport pipeline, installed between the CEP and WHPB platforms to transfer produced fluid from WHPB to CEP. Crude oil from CEP is then transferred to an FPSO vessel (FPSO Century) stationed in the QHD 32-6 oil field via a subsea pipeline.
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