CO 2 sequestration monitoring and verification technologies applied at Krechba, Algeria

The In Salah project in Algeria is an industrial-scale CO2 storage project that has been in operation since 2004. CO2 from several gas fields, which have a CO2 content of 5–10%, is removed from the production stream to meet the sales gas-export specification of 0. 3% CO2. Rather than vent that separated CO2 to the atmosphere (as was normal industry practice for such gas plants), BP and its joint venture (JV) partner, Sonatrach, invested an incremental US100 million in a project to compress, dehydrate, transport, and inject that CO2 into a deep saline formation downdip of the producing gas horizon. Statoil then joined the JV at production start-up in August 2004.