Bonga
PRODUCTION FACILITY
Facility Name Bonga FPSO Duty Oil/Gas
Operator Snepco Current Status Producing since 2005
Host Type FPSO Water Depth 1,030 m / 3,399 ft
Dev.Cost $3,600,000,000 Region Nigeria
 
Location Oil Prospecting License 212
 
OIL & GAS FIELD
Field Name Bonga Discovery Date Jan 1996
Block OML 118 Reserve Type Oil/Gas
Current
Status
Producing Production Start Nov 2005
Water Depth 1,000 m / 3,300 ft
 
 
Description
 
Awarded in 1993 in the first round of bidding for Nigeria's deepwater frontier acreage, the Bonga field is located 75 miles (120 kilometers) offshore Nigeria in Oil Mining License 118. The field spans 37 miles (60 kilometers) in water depths of more than 3,281 feet (1,000 meters) and began producing oil and gas in November 2005.

SNEPCo (55%) under a Production Sharing Contract with Nigeria National Petroleum Corporation (NNPC) operates Bonga. Other partners in the field are Esso with 20% interest, NAE Nigerian Agip Exploration with 12.5% interest and Elf Petroleum Nigeria with 12.5%.

Development and Production

Nigeria’s first deepwater oil discovery, Bonga was discovered and developed by Shell. Development costs totaled nearly $3.6 billion, and technology on the field marks several firsts in the industry.

The production facility is one of the world's largest FPSO and deepwater subsea infrastructure. The field has 16 subsea oil producing and water injection wells that connect to the FPSO by production flow lines, risers and control umbilicals. The 2 million barrel storage capacity FPSO is the first vessel to use clad steel catenary risers.

When the field originally came on stream in 2005, production rates were expected to reach 225,000 bopd and 150 MMcf/d (4.24 MMcm/d); but in July 2007, production rates were 200,000 bopd.

Bonga FPSO

Shell awarded the hull construction contract for the FPSO to Samsung Heavy Industries, who fabricated the 300,000-ton hull in South Korea. Meanwhile, AMEC built and integrated the 22,000-ton oil processing topside facilities. Once completed, the FPSO measured 984 feet (300 meters) long, 246 feet (75 meters) wide and was as tall as a 12-story building.

Stolt Offshore designed and built the gas export pipelines, the production flow lines, water injection lines and the risers that connect the subsea facilities to the FPSO. Mooring and installation of the FPSO and SBM loading buoy were completed by SBM and Technip, along with installation of the gas lift risers, well jumpers, control umbilicals, production manifolds and subsea trees. Vetco Gray supplied the control systems, subsea wellheads and manifolds.

Firsts and Feats

Bonga also marked the first installation of a large diameter steel tube umbilical with bonded composite material covers as gas lift risers, in dynamic catenary configuration, off a spread moored FPSO, which is connected to the base of a steel catenary flow line riser. Bonga also has the first, largest and most technologically advanced polyester moored deepwater buoy to be built in Nigeria.

Bonga also saw the first implementation of a 1.4-mile (2.3-kilometer) large-size dynamic flexible pipe for oil transfer to a single point mooring-offloading buoy. The single point-mooring buoy that was installed at Nigerdock in Nigeria is the world's largest. With the fabrication and installation of this SPM buoy, Shell demonstrated that its Snake Island Logistics base in Lagos, Nigeria, can support other deepwater developments offshore Nigeria and other regions.

Satellite Fields

Bonga North-West lies in 2,953 to 3,937 feet (900 to 1,200 meters) of water on the Oil Prospecting License (OPL) 212, and will be developed by 12 subsea wells tied-back to the Bonga FPSO. The initial phase of the project includes the drilling of five subsea wells.

In the first quarter of 2009, the operator awarded the FEED and the detailed design of the topside facility to the National Engineering and Technical Company Limited. Weltek Limited executed the topsides modification work, including procurement, onshore fabrication, offshore intallation and hook-up.

On Oct. 14, 2009, Saipem received a contract encompassing engineering, procurement, fabrication, installation and pre-commissioning services for 8 miles (13 kilometers) of 10-inch/12-inch-diameter production pipe-in-pipe flowlines, four kilometers of 12-inch-diameter injection flowlines as well as related production facilities. The contract also includes the installation of 9 miles (15 kilometers) of umbilicals. The work is expected to commence in the second half of 2012.
 
Activities
 
Shell Resumes Bonga Production
Date: Jan. 2012
Type: Status Update
Shell has restarted production at its Bonga oil field offshore Nigeria, after an oil leak was detected. The facility was closed after a leak during a tanker loading operation on Dec. 20, leading to a serious oil spill, announced Dow Jones newswires. Shell says it completed the clean-up from the spill and resumed output on Jan. 1 at the 200,000 bopd oil field. The Bonga field is located 75 miles (120 kilometers) offshore Nigeria in Oil Prospecting License 212. SNEPCo (55%) under a Production Sharing Contract with Nigeria National Petroleum Corporation (NNPC) operates Bonga.
Shell Begins Maintenance Work at Nigeria's Bonga Oil Field
Date: Mar. 2011
Type: Status Update
Shell Nigeria Exploration and Production Co., SNEPCO, has commenced maintenance work on its Bonga deepwater oil field offshore Nigeria. No details were released on the duration of the field's shut-in, reported Dow Jones. Bonga came online in 2004 and produces roughly 225,000 bopd. The Bonga field is located 75 miles (120 kilometers) offshore Nigeria in Oil Prospecting License 212. SNEPCo (55%) under a Production Sharing Contract with Nigeria National Petroleum Corporation (NNPC) operates Bonga.
Saipem Scores Contract for Bonga North-West Off Nigerian Coast
Date: Oct. 2009
Type: Contract Award
Saipem was awarded a new offshore contract worth more than US $200 million for the subsea development of the Bonga North-West field, located in OML 118, approximately 75 miles (120 kilometers) off the Nigerian coast. The contract was awarded by Shell Nigeria Exploration and Production Company Limited (SNEPCo), and encompasses engineering, procurement, fabrication, installation and pre-commissioning services for 8 miles (13 kilometers) of 10"/12" production pipe-in-pipe flowlines, 2 miles (4 kilometers) of 12-inch-diameter water injection flowlines as well as related production facilities. The contract also includes the installation of 9 miles (15 kilometers) of umbilicals. Bonga North-West is located in approximately 2,953 to 3,937 feet (900 to 1,200 meters) of water, and will be developed by 12 subsea wells tied-back into the Bonga main infrastructure.
Shell Confirms End of Force Majeure on Nigeria Bonga Oil Exports
Date: Jul. 2008
Type: Status Update
Royal Dutch Shell said it has lifted force majeure on oil exports from its Bonga offshore field in Nigeria, three weeks after an attack by militants forced it to shut the facility. Shell declared force majeure, which frees the company from contractual obligations, on Bonga shipments for June and July on June 20.
Shell Starts Bonga Back Up
Date: Jun. 2008
Type: Status Update
According to Reuters, Shell spokesman Precious Okolobo said that the company resumed production at the Bonga offshore oilfield, although he did not say if the field was producing at its full capacity or not. The Bonga oilfield has been shut in since last week because of a militant attack.
Shell's Bonga Field Begins Production Offshore Nigeria
Date: Nov. 2005
Type: Production Start
Shell has begun production from the Bonga deepwater oil and gas field, 120 kilometers 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.
 
Status History
 
Bonga FPSO

Producing - Nov 01, 2005 to -
Bonga

Producing - Nov 2005 to -
Under Development - 1999 to Nov 2005
Discovery (Drilled) - Jan 1996 to Jan 1996
Exploratory Drilling - Sep 1995 to Jan 1996
 
Project Map Africa - West
Line Separator
Project Image
Bonga FPSO
 
Bonga Field Concession & Sedco 709
 
Bonga Field