CO2 sequestration in a UK North Sea analogue for geological carbon storage

Heinemann, N., Wilkinson, M., Haszeldine, R.S., Fallick, A.E. and Pickup, G.E. (2013) CO2 sequestration in a UK North Sea analogue for geological carbon storage. Geology, 41(4), pp. 411-414. (doi: 10.1130/G33835.1)

Abstract

The Fizzy discovery, a southern North Sea (UK) gas accumulation with ~50% natural CO₂ content, provides an opportunity to study the long-term quantity of CO2-related mineral reaction as an analogue for engineered CO₂ storage. The reservoir contains diagenetic dolomite typical of the formation; to identify and quantify any sequestration-related dolomite is challenging. To this end, CO₂ was extracted by stepwise extraction from dolomite from both the Fizzy discovery and equivalent sandstones from a low-CO₂ location. Between 0% and 22% of the dolomite in the Fizzy discovery precipitated due to the high CO₂ concentration. This corresponds to 11% ± 8% of the recent high-CO₂ charge sequestered as dolomite, a relatively low proportion after ~50 m.y. of potential CO₂-water-rock interaction.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Fallick, Professor Anthony
• Authors: Heinemann, N., Wilkinson, M., Haszeldine, R.S., Fallick, A.E., and Pickup, G.E.
• College/School: College of Science and Engineering > Scottish Universities Environmental Research Centre
• Journal Name: Geology
• ISSN: 0091-7613
• ISSN (Online): 1943-2682