簡介：由巴西石油和FMC聯合開發海底分離系統，將在巴西Marlim 海上油田部署。該系統主要目的是克服采油設施的瓶頸，通過分離不必要的水分，來提高海底采油的產量。系統包括海底分離、泵送和水回注。設備安裝水深可達900米，能夠處理含氣、油、水和沙的油流，其中包括重油。具體是首先分理出氣體，然后采用新型油水分離設備將水和重質油分離開來，再除砂，然后將氣體回注重油中，以提升油流的舉升能力，同時分離水回注地層，進一步的促進產量提升。

巴西油田位置圖

FMC Technologies has been awarded a USD 90 million-contract by Petrobras to supply a subsea-separation system for the mature, deepwater Marlim field in the Campos basin, offshore Brazil. The contract marks the first deepwater deployment of subsea-separation technologies in a mature field and the first separation of heavy oil and water in a subsea environment.

In operation since 1991, Marlim is Petrobras’ largest field in the Campos basin and is located in water depths ranging from 2,100 to 8,500 ft (650 to 2 600 m). With 129 wells and 8 floating production units (FPUs) devoted to oil and gas production, the field was once considered the world’s largest subsea development. Nearly 20 years of operation has brought about increasing production of water?which limits the oil-handling capacity of the surface facilities?and sand?which could potentially damage the system’s internals.

The main purpose of the subsea-separation system is to debottleneck the FPU and increase production by removing unwanted water from the production stream at the seabed. The scope of supply consists of a subsea-separation, pumping, and water-reinjection system, developed jointly by Petrobras and FMC.

The system will be installed at a depth of 2,950 ft (900 m) and will receive the production stream?which contains a mixture of oil, gas, water, and sand. It will first separate the gas from the liquids and then the heavy oil will be separated from the water using a novel pipe-separation design that was licensed and developed by FMC in cooperation with StatoilHydro.

The system also integrates FMC’s proprietary water-treatment and sand-handling technologies as part of the subsea-separation system. The separated gas will be added back to the oil stream to aid its lifting to the FPU, while the separated water will be pumped back into the reservoir to further increase production. This also marks the first time this system has been used to reinject water to increase reservoir pressure and boost production, according to FMC.

Marlim is the fifth project awarded to FMC that will utilize subsea-separation technologies. Other projects include StatoilHydro’s Tordis field, Shell’s Perdido and BC-10 developments, and Total’s Pazflor field.

The equipment will be jointly engineered among FMC’s operations in Brazil, Norway, and The Netherlands. Final manufacturing and integration activities will be performed at the company’s Rio de Janeiro facility, with deliveries projected to begin in 2011.

For more information, please visit FMC Technologies’ subsea systems web page.

楊寶劍 是振威（全球）石油網的高級技術編輯，在石油技術資訊行業有八年的學識和經驗。他源源不斷地提供石油行業全球最新的技術創新、研發成果、現場應用情況等信息。如果你對“新技術新產品”的內容有任何問題或建議，請聯系楊寶劍編輯 +86 10-58236512 Email：allenyo@zhenweiexpo.com 歡迎您提供手中的最新技術文章！