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Project: Bonga Field

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  Bonga Field
Field/Project Ownership
  Project Name: Bonga Field operator logo
  Operator: Shell Nigeria
  Ownership: Shell Nigeria 55%,
Esso 20%,
Nigerian Agip 12.5%,
Elf Petroleum 12.5%
  Region: Africa - West map
  Country: Nigeria
  Location/Block: OPL 212
  Water Depth: 1,245 meters
4,084 feet
Reserves convert these values
  Total Oil Reserves: --   Total Gas Reserves: --
  Rec. Oil Reserves: 6,000 mmboe   Rec. Gas Reserves: --
  Daily Oil Prod. Cap.: 225,000 bopd   Daily Gas Prod. Cap.: 150 mmcf/d
Discovery & Development Production
  Discovery Date: January 1996    Production Start Date: November 2005
  Discovery Rig:     Est. Field Life: Unknown
  Govt Approval Date: December 2002    Duty: Oil/Gas
  Development Cost: $3,600,000,000 USD    Host Type: FPSO (Floating Prod, Storage & Offloading)

  Field Description - Bonga Field
The Bonga concession was awarded in 1993 during the first round of bidding for Nigeria�s deepwater frontier acreage. Located in Oil Prospecting License (OPL) 212, the 60 square kilometer field is situated in water depths of more than 1000 meters. It is operated by Shell Nigeria Exploration and Production Company (SNEPCo 55%) on behalf of the Nigeria National Petroleum Corporation (NNPC) under a Production Sharing Contract (PSC). SNEPCo has a Joint Operating Agreement (JOA) with Esso (20%) NAE Nigerian Agip Exploration Ltd (12.5%) and Elf Petroleum Nigeria Limited (12.5%) in respect of OPL 212.


Production facilities comprise one of the world�s largest Floating Production Storage and Offloading (FPSO) vessels and deepwater sub sea infrastructure. The field�s initial 16 sub sea oil producing and water injection wells are connected to the two million barrel storage capacity FPSO by production flow lines, risers and control umbilicals. Notably, this is the first time inconel clad Steel Catenary Risers have been used on an FPSO anywhere in the world.

The Bonga FPSO is one of the largest vessels of its type in the world and the largest ever to enter the Tyne. The topside of the FPSO was fabricated at AMEC in Wallsend and other locations in Europe and Nigeria. The integration of the topsides and the hull was completed at Wallsend. Topsides are facilities for processing oil, water and gas. Some 22,000 tonnes of equipment including the topsides were installed on the Bonga at Wallsend. The journey from the Tyne to it permanent mooring at the Bonga field took approximately 6 weeks.

Bonga is 300 metres long, 75 metres wide (including the helideck) and the height of a 12-storey building. Bonga�s hull had a lightship weight of 47,200 tonnes when it arrived at Wallsend. It now weighs 90,000 tonnes. The increase is in stores, water, fuel and the topsides. Bonga�s deadweight (when she has a full cargo) will be 312,500 tonnes.

FPSO Firsts:
  1. The first large steel catenary riser (SCR) to be installed on an FPSO.
  2. The first use of inconel cladding for a dynamic riser application.

  3. The first installation of a large diameter steel tube umbilical with bonded composite material cover as gaslift risers, in dynamic catenary configuration, off a spread moored FPSO, and connected to the base of a steel catenary flowline riser.

  4. The first, largest and most technologically advanced polyester moored deepwater buoy to be built in Nigeria.

  5. The first implementation of large size dynamic flexible pipe (2.3km long) for oil transfer to a single point mooring (SPM) offloading buoy.


ABB won the contract to delivery US$ 180 million order to deliver the subsea production system. Under the terms of the contract, ABB is responsible for engineering, procurement and construction (EPC) of all of the subsea equipment required for the Bonga field development, including production control umbilicals and gas lift risers. As part of the contract, ABB will supply 29 conventional subsea trees and associated hardware to facilitate oil production from, and water injection into, the reservoir. The ABB workscope encompassed project management, engineering, and the supply of manifolds, trees, wellheads, controls, connection systems, intervention equipment, integration testing and installation support.

Bonga Concession Map
Bonga FPSO
Seaway Legend
Bonga Field Layout

  Related News Articles
Shell Ships First Oil from Bonga Field
Tuesday, January 03, 2006 - Shell Nigeria Exploration and Production Company (SNEPCO) says that the first crude oil from the Bonga deepwater oil and gas field offshore Nigeria was shipped.
Shell's Bonga Field Begins Production Offshore Nigeria
Monday, November 28, 2005 - Shell has begun production from the Bonga deepwater oil and gas field offshore Nigeria. The target is to attain the current nameplate production of 225,000 barrels of oil and 150 million standard cubic feet of gas per day as soon as possible.
Shell's Bonga Field to Start Up Late October
Thursday, October 06, 2005 - Shell's Bonga oilfield in Nigeria is now expected come onstream in late October, with an initial production rate of 100,000 barrels per day (bpd).
Shell Delays Bonga Field Start Until 2005
Friday, April 02, 2004 - Shell says there has been a further delay of the start-up of Bonga, Nigeria's biggest offshore oil project
Fabrication of Bonga Topsides Complete
Wednesday, June 04, 2003 - Shell Nigeria reports that, as part of its commitment to increase local content in its operations, three modules for the Bonga FPSO topsides have been successfully fabricated in Warri.
Bongo FPSO Runs Into Bad Weather
Wednesday, October 23, 2002 - The newbuild FPSO, Bonga, has had to take cover in Rotterdam due to inclement weather.
Shell's Bonga Southwest Field Could Hold 1 Billion Barrels
Wednesday, May 15, 2002 - Shell reports that appraisals have shown the Bonga Southwest field in Nigeria could have reserves of up to one billion barrels.
Stolt Offshore Awarded Contract In Nigeria
Tuesday, July 24, 2001 - Stolt Offshore has been awarded a pipelay contract offshore Nigeria valued at $135 million.

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