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In Salah

Brief description:


Country: Algeria

Project type: Capture Storage

Scale: Large

Remove CO2 from natural gas and inject it into wells.

Status: Dormant

Capital cost: USD 1,7 B

Year of operation 2004
Industry: Oil and gas processing

Capture method: Natural Gas Separation

Capture technology: Amine
Transport of CO2 by: none

Type of storage: Depleted Gas Reservoir

Volume: 1-1.2 million tonnes/CO2


Photo: StatoilHydro

The In Salah gas project in central Algeria is a joint venture between national energy company Sonatrach, BP and Statoil to produce 9 billion cubic metres of market-ready gas from natural gas reserves.

At the Krechba gas field production site, rather than venting CO2 (an established practice on similar projects) it is compressed and re-injected into the aquifer zone of one of the shallow gas reservoirs two kilometres below the surface. About 1-1.2 million tonnes of CO2 is injected every year, and the partners aim to store a total of 17 million tonnes over the next 20 years.

In November 2012, there were reports that In Salah's injection operations had been temporarily suspended. No further details are available as of February 2013.

The project uses a similar separation process deployed by Statoil at the Sleipner West field off Norway using amine capture technology. It is being supported by the US Department of Energy and the European Union as an example of secure industrial-scale geological storage of CO2. The Carbon Sequestration Leadership Forum has also identified In Salah as one of the most important CCS initiatives globally.

The In Salah fields account for about 12% of Algeria’s total gas output. The country is the third-largest supplier of gas to Europe.

Prior to the acceptance of CCS into the Clean Development Mechanism in late 2011, the In Salah partners had previously submitted a proposal to do just that, drawing on their experience at In Salah.

Other Sources and Press Release:

Monitoring CO2 storage
BP In Salah project website
Statoil In Salah project website


The CO2 injected at Krechba will be stored indefinitely, according to the consortium. In 2004, a joint industry programme was started by Sonatrach, BP, StatoilHydro and other R&D groups in Europe and the US. The goal is to verify long-term storage of CO2 as a viable option for industry.

Companies involved