Fibre-optic monitoring for high-temperature Carbon Capture, Utilization and Storage (CCUS) projects at geothermal energy sites
File(s)
Author(s)
Stork, AL
Chalari, A
Durucan, S
Korre, A
Nikolov, S
Type
Journal Article
Abstract
It is often assumed that geothermal energy provides a clean source of renewable energy without emissions of carbon dioxide (CO2) or other greenhouse gases. In fact, most geothermal energy plants emit CO2 and small amounts of other gases, typically up to 5% of by weight. Reinjection of produced CO2 back into the geothermal fields has been proposed by several researchers in the past. The EU funded CarbFix and CarbFix2 projects have successfully demonstrated that CO2 reinjection into basaltic rocks can provide a safe and efficient geological storage method. The ACT Programme funded SUCCEED project is focused on understanding the effects of and developing technologies to enable reinjection of produced CO2 at geothermal plants in different geological settings. Monitoring the process is vital to understand the effects, possibilities and limitations of injection but the availability of suitable sensors is limited in high-temperature and harsh environments. This problem can be overcome with the use of distributed fibre-optic sensors which are able to withstand such harsh environments and record temperature, seismic and strain signals. This article describes actual and planned deployments of Distributed Acoustic Sensing (DAS) technology at the Hellisheidi and Kizildere geothermal fields in Iceland and Turkey, respectively, and outlines the practical considerations for such deployments.
Date Issued
2020-10-01
Date Acceptance
2020-09-03
Citation
First Break, 2020, 38 (10), pp.61-67
ISSN
0263-5046
Publisher
EAGE
Start Page
61
End Page
67
Journal / Book Title
First Break
Volume
38
Issue
10
Copyright Statement
© 2020 EAGE All Rights reserved.
Identifier
https://www.earthdoc.org/content/journals/10.3997/1365-2397.fb2020075
Subjects
Geochemistry & Geophysics
Publication Status
Published
Date Publish Online
2020-10-01