Long-term simulation of the Snøhvit CO2 storage

Abstract

The purpose of this study is to simulate and evaluate the long-term (1000 years) consequences of carbon dioxide injection into a deep (2700 m) saline formation in the Snohvit field located offshore in the northern Norwegian Sea. During the 30-year-lifetime of the project, which began in summer 2007, approximately 23 million tons of CO2 are injected through one well. In order to analyse different possible CO2 migration pathways, several scenarios have been assumed and simulated. They deal with the sealing capacity of the main faults and of the saline formation cap rock.