Offshore/subsea systems

Subsea Tiebacks Drive Growth in Bonga North Field, Deepwater Nigeria

This paper discusses the journey of the Bonga North project, highlighting challenges and resolution strategies in a constantly changing deepwater environment.

Fig. 1—OML 118 field location.
Fig. 1—OML 118 field location.
Source: OTC 35242.

The Bonga North (BN) project is a greenfield oil development in the Gulf of Guinea, approximately 130 km offshore in water depths ranging from 900 to 1300 m. The block has an existing floating production, storage, and offloading vessel (FPSO) with a 20-year design life ending in 2025 and an oil capacity of 220,000 BOPD. The block has descended from the initial production plateau and is producing below capacity. The complete paper discusses the journey of the BN project, highlighting the challenges and resolution strategies in a constantly changing environment.

BN Field

Bonga is the first deepwater development project in Nigeria, and has produced over 1 billion bbl. The BN field is in the OML 118 block and consists of hydrocarbon accumulations in middle Miocene turbidites (Fig.

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