[Angola] FPSO Greater Plutonio

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escveritas
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[Angola] FPSO Greater Plutonio

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FPSO Greater Plutonia has been operating in Block 18, located 120 km off the coast of Angola since 2008. This is a deepwater development with the FPSO sits on 1300 m water depth and a host to more than 43 subsea wells.

Block 18 is located in the Angolan offshore, 160 kilometers northwest of Luanda. Eight discoveries were made in this block, of which the fields Galio, Cromio, Cobalto, Paladio, and Plutonio make up the first producing development known as Greater Plutonio. Platina, one of the other field in this block was approved by the Concessionaire in December 2018 and it is the next development of the this block.

The Greater Plutonio development plays a major role in bp’s portfolio. Development drilling began in 2005 and the project came on-stream in 1 October, 2007. bp and SSI are the developments shareholders. Production is based on a spread-moored FPSO 1.75 million barrel capacity vessel, a subsea production system with intelligent well technology, and water and gas injection wells. Manifolds, flow-lines and risers connect the wells to the FPSO for export to trading tankers via a remote offloading system. Gas is able to be exported to the Angola LNG scheme or re-injected into the reservoirs. The major contractors were KBR, responsible for EPCM, Hyundai Heavy Industries in Ulsan, South Korea, which built the FPSO hull and topsides, Stolt/Technip in Paris, who supplied the umbilicals, risers and flow-lines (URF), and FMC Kongsberg in Norway, which has supplied the subsea production system (SPS).

Subsea Production Systems (SPS)

The initial project was for 20 trees, three manifolds, production controls and the connection system. The first 15 trees were supplied from FMC’s Dunfermline and Houston facilities. The remaining trees were shipped for assembly and testing to FMC’s facility in Angola. The nine subsea manifolds, each around 100 tonnes and comprising piping, valves, chemical injection and multi-phase flow meters and ROV intervention facilities, were constructed at NLI Larvik in Norway and at Sonamet in Lobito.

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Umbilicals, risers and flow-lines (URF)

The Stolt Offshore and Technip consortium provided the umbilicals, risers and flow-lines. The FPSO is held in position for its 25-year life by a spread of 12 mooring lines connected to anchor piles on the seabed 1,300 metres below. Twenty-one flexible risers, seven umbilicals and four steel risers, arranged in a bundle within a riser tower, connect the subsea equipment to the FPSO. Buoyancy is provided by a tank at the top of the tower and the bottom of the tower - containing gas lift manifolds and the spools which connect the risers to the flow-lines - is suction anchored to the seabed and a flex joint element allows the tower to rotate and move with waves and current. More than 20 specialist suppliers from around the world provided materials and equipment and the whole bundle were assembled into the riser tower at the Sonamet yard in Lobito in 2006 and 2007. The offloading buoy, manufactured by MIS Dubai, was also completed by Sonamet.

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Floating production, storage, and offloading (FPSO)

The FPSO hull is a double-sided/single bottom construction, fabricated from steel plate with sections ranging in thickness from 12 - 40 mm. When fully loaded it has a 23 metre draft and a 14 metre draft when empty. It includes accommodation for up to 160 people, helideck, lifeboats, control room, galley/catering facilities, gym, lounge and cinema. The main equipment packages installed in the hull are cargo and ballast pumps, fire and deluge pumps, seawater lift pumps, a desulphation plant, two diesel generators and an emergency generator. The generators are used during shut down of the topsides power plant. Construction began in 2005 and concluded with the completion of outfitting in January 2006. The KBR designed topsides accommodates all processing facilities for oil, gas and produced water, as well as seawater treatment for water injection.

Topsides

Fabrication of topsides began in January 2005 and are comprised of 12 equipment modules. There are two power generation modules as well as modules containing the equipment for well fluids reception, HP and LP separation, crude oil metering, the high pressure flare and KO drum, three modules for low, medium and high pressure gas compression and three modules for seawater treatment and injection. In January 2006 the completed hull was moved to the HHI offshore yard for topsides integration and the start of hook-up and commissioning activities. Seawater is treated for injection into the reservoirs in the Sulphate Reduction Plant (SRP) where membrane elements are contained within an array of 612 vessels. The SRP can produce up to 400mbd of low sulphate seawater.
escveritas
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Re: [Angola] FPSO Greater Plutonio

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Platina Brought Online

Offshore-Energy.biz

Oil major BP has started production at the Platina field in Block 18, which is located in the Angolan offshore, approximately 140 kilometres northeast of Luanda.

BP reported the start of production at the Platina field in Block 18 on Thursday. Previously, a total of eight discoveries were made in this block, while Galio, Cromio, Cobalto, Paladio, and Plutonio fields make up the first producing development known as Greater Plutonio.

It is worth reminding that TechnipFMC was awarded integrated engineering, procurement, construction, and installation (IEPCI) contract from BP for the Platina field development back in March 2020.

In addition, Angola’s National Oil, Gas, and Biofuels Agency (ANPG) said in November last year that BP started drilling at the Platina field. The firm began drilling on the Platina field using Valaris’ DS-12 drillship.

Furthermore, the Platina field will be linked to BP’s existing Greater Plutonio floating production, storage and offloading (FPSO) system. The Greater Plutonio came on-stream in October 2007 and the production is based on a 1.75-million-barrel capacity spread-moored FPSO, a subsea production system with intelligent well technology, and water and gas injection wells.

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The Platina field is expected to produce 30,000 barrels of oil per day at its peak and access an estimated 44 million barrels of oil reserves.

According to BP’s statement, this project was delivered 44 days ahead of schedule and 25 per cent below the original budget. The company also added that the production will help the West African nation slow a decline in output after years of lower investments in the sector.

BP operates the field and holds a 46 per cent stake in Block 18, while China’s Sinopec has a 37.72 per cent stake and Angola’s national oil company Sonangol the remaining 16.28 per cent.

In recent company news, BP saw its profit soar in the third quarter of 2021 when compared to the same period last year, driven by higher oil and gas prices, refining margins and strong trading results as the world is recovering from the pandemic.

Moreover, BP delivered its six-year programme of major project execution, on average around 15 per cent under budget, hitting its target of bringing online 900 thousand barrels of oil equivalent per day of new production by 2021.

Six other major projects have come online in 2021, including two in the third quarter – Matapal, offshore Trinidad and Thunder Horse South Expansion Phase 2 in the Gulf of Mexico.
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