Amenam Kpono Amenam
PRODUCTION FACILITY
Facility Name Amenam Kpono Production Platform (Phase I) Duty Oil/Gas
Operator Total Current Status Producing since 2003
Host Type Fixed Platform Water Depth 40 m / 132 ft
Dev.Cost n/a Region Nigeria
 
Location OML 99, OML 70



Facility Name Amenam Kpono Production Platform (Phase II) Duty Gas
Operator Total Current Status Producing since 2007
Host Type Fixed Platform Water Depth 40 m / 132 ft
Dev.Cost n/a Region Nigeria
 
Location OML 99, OML 70
 
OIL & GAS FIELD
Field Name Amenam Kpono Discovery Date Jan 1990
Block OML 99, OML 70 Reserve Type Oil/Gas
Current
Status
Producing Production Start Jul 2003
Water Depth 40 m / 132 ft
 
 
Description
 
Spanning offshore Blocks OML 99 and 70, Amenam Kpono is situated in 131 feet (40 meters) of water 19 miles (30 kilometers) offshore Nigeria in the petroleum-rich Niger Delta region. Amenam Kpono, which means "well done" and "with full respect" in the native language of the area, boasts very light crude at an API of 43 to 47 degrees.

The Amenam Kpono project represents the first-ever unitization agreement, which united the operators and partners on both OML 99 and 70 together. With 30.4% interest, Total serves as the operator of the project, and partners are ExxonMobil with 9.6% and the Nigerian National Petroleum Corp with 60%.

Exploration

One of Nigeria's largest offshore oil and gas projects, Amenam Kpono almost wasn't discovered. Just hours before drilling was scheduled to stop completely on OML 99, the Amenam discovery was made in 1990 by the Amenam-1 exploration well. Located in six reservoirs (R4, R9, R10, R11, R12 and R15), Amenam Kpono reserves are located 11,155 to 15,420 feet (3,400 to 4,700 meters) below the seafloor.

In 1991, the Amenam-2 well was drilled, further confirming the size of this massive field; and at the close of the year, a 92,417-acre (374-square-kilometer) 3D seismic survey was conducted on the reservoir. Another well in 1992 discovered new reservoirs on the field, and the fourth appraisal well on the field further delineated the discovery.

In 1995, the first discovery well was drilled on Kpono, proving the Amenam reservoir extended to OML 70. In 1996, another two appraisal wells were drilled on Kpono. In 2001, a second seismic survey was conducted on the field. The field is expected to hold 500 million barrels of oil.

Phase I

Development on this massive find was split into two phases. At a total cost of US $1.2 billion, the first phase of development entailed subsea wells, production platforms, an FSO and associated pipelines.

The main production complex consists of four main platforms connected by bridges: a quarters platform for 80 personnel, two drilling platforms and a production platform. The four major contractors chosen for the first phase of development include Acergy (formerly Stolt Offshore), SaiBos, SBM/HHI and Eiffel.

The engineering, construction and installation of the production platform were awarded to SaiBos, which subcontracted with Technip, McDermott and Dockwise on the project. The platform has a production treatment capacity of 130,000 bopd. Measuring 197 feet (60 meters) long, 131 feet (40 meters) wide and 164 feet (50 meters) high, the production platform consists of three levels and weighs 11,500 tons (10,433 tonnes).

Via a 19-mile (30-kilometer) pipeline, the production platform is connected to a Floating Storage Offloading vessel (FSO) moored on the field and about 37 miles (60 kilometers) off the coast. Awarded to Hundai Heavy Industries, the FSO Unity has a storage capacity of 2.4 million barrels of oil. The largest FSO at the time of its commissioning, the newly built FSO Unity weighs 49,604 tons (45,000 tonnes) and measures 1,083 feet (330 meters) long, 210 feet (64 meters) wide and 105 feet (32 meters) high. At a cost of $200 million, the vessel serves as a hub for Amenam Kpono and nearby fields Odudu, Ofon, Afia, Ime and Edikan.

An environmental commitment to zero flaring was a major component of field development, both in the first and second phases. Rather than flare off produced natural gas, it is re-injected into the field to increase production. The first phase of development re-injected gas into the field at a daily rate of 530 MMcf/d (15 MMcm/d) at a pressure of 400 bars.

Expected to produce 125,000 bopd, the first phase of development commenced on July 14, 2003. Development on the second phase of the project started immediately.

Phase II

The second phase of development on Amenam Kpono included more subsea wells, including water injection wells, as well as another production platform that would handle gas and a new water injection platform. This phase of development commercializes produced gas by transporting it via pipeline to shore.

Because the second phase of development commercializes some of its produced gas, the current phase re-injects gas at a rate of 177 MMcf/d (5 MMcm/d) and injects water at a rate of 300,000 barrels a day to stabilize pressure in the field. Acergy was tapped to engineer, procure, fabricate, install and commission the 705-ton (640-tonne) water injection platform with 606-ton (550-tonne) topsides with 12 drilling slots and six injection wells.

Located 1.2 miles (2 kilometers) away from the initial production complex on Amenam Kpono, the second phase of development called for a gas production platform to be built and installed. Saipem was awarded the contract for the engineering, procurement, fabrication and installation of the production platform and bridge connecting it to existing infrastructure. The platform included an 8,818-ton (8,000-tonne) topside, 551-ton (500-tonne) compressor module and 1,653-ton (1,500-tonne) eight-legged jacket. Subcontractor Technip handed the contract for the topsides construction and installation.

The remaining 353 MMcf/d (10 MMcm/d) of gas produced from the field is transported via pipeline to the Bonny LNG plant onshore for liquefaction. Acergy won the contract to construct and install the 24-inch-diameter, 37-mile-long (60-kilometer-long) pipeline from the gas production platform to the LNG facility onshore Bonny Island, as well as the 1.2-mile-long (2-kilometer-long), 18-inch-diameter pipeline linking the water injection platform with the processing platform. By providing feedstock for the fourth and fifth trains at the LNG facility, this prevents flaring and the release of 15 million tons (14 million tonnes) of CO2 each year.

In total, there are 34 subsea wells on the field, including 18 production wells, five gas injection wells and 11 water injection wells. Measuring 106 miles (170 kilometers) combined, the wells were drilled by two rigs working simultaneously over 2,000 days. The longest well on the field measures 21,654 feet or 4 miles (6,600 meters or 6.6 kilometers), and the most deviated well is 54 degrees.

Production started on the second phase of development in 2007, delivering an additional 50,000 boepd or 300 Mcf/d of natural gas. The largest offshore project ever developed in West Africa, the cost of development was $2 per barrel. The field is expected to have a production life of more than 25 years.

Now a hub, the Amenam Kpono complex gathers gas from neighboring fields, including Ofon, Odudu and Akpo, and transfers it to Bonny, as well.
 
Activities
 
Production Commences from Second Phase of Development
Date: Jan. 2007
Type: Production Start
Production started on the second phase of development in 2007, delivering an additional 50,000 boepd or 300 Mcf/d of natural gas. The largest offshore project ever developed in West Africa, the cost of development was $2 per barrel. The field is expected to have a production life of more than 25 years.
Second Phase of Field Development Under Way
Date: Jul. 2003
Type: Development Activity
The second phase of development on Amenam Kpono included more subsea wells, including water injection wells, as well as another production platform that would handle gas and a new water injection platform. This phase of development commercializes produced gas by transporting it via pipeline to shore.
 
Status History
 
Amenam Kpono Production Platform (Phase II)

Producing - 2007 to -
Production started on the second phase of development in 2007, delivering an additional 50,000 boepd or 300 Mcf/d of natural gas. The largest offshore project ever developed in West Africa, the cost of development was $2 per barrel. The field is expected to have a production life of more than 25 years. Now a hub, the Amenam Kpono complex now gathers gas from neighboring fields, including Ofon, Odudu and Akpo, and transfers it to Bonny, as well.
Under Construction - Jul 15, 2003 to 2006
The second phase of development on Amenam Kpono included more subsea wells, including water injection wells, as well as another production platform that would handle gas and a new water injection platform. This phase of development commercializes produced gas by transporting it via pipeline to shore.
Amenam Kpono Production Platform (Phase I)

Producing - Jul 14, 2003 to -
Expected to produce 125,000 bopd, the first phase of development commenced on July 14, 2003.
Amenam Kpono

Producing - Jul 14, 2003 to -
Expected to produce 125,000 bopd, the first phase of development commence on July 14, 2003. Development on the second phase of the project started immediately.
Under Development - 1997 to Jul 13, 2003
Development on this massive find was split into two phases. At a total cost of US $1.2 billion, the first phase of development entailed subsea wells, production platforms, an FSO and associated pipelines.
Appraisal Drilling - 1990 to 1996
In 1991, the Amenam-2 well was drilled, further confirming the size of this massive field. Another well in 1992 discovered new reservoirs on the field. The fourth appraisal well on the field further delineated the discovery. In 1995, the first discovery well was drilled on Kpono, proving the Amenam reservoir extended to OML 70. In 1996, another two appraisal wells were drilled on Kpono.
Discovery (Drilled) - 1990 to 1990
The Amenam discovery was made in 1990 by the Amenam-1 exploration well.
 
Project Map Africa - West
Line Separator
Project Image
Amenam Kpono Facility Construction