Characterization and modelling of a naturally fractured reservoir-caprock unit targeted for CO2 storage in arctic Norway

K. Senger*, M. Mulrooney, N. Schaaf, J. Tveranger, A. Braathen, K. Ogata, S. Olaussen

*Corresponding author for this work

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

Abstract

Successfully storing CO2 underground requires a good understanding of the subsurface at the storage site, and its robust representation in geological models. Geological models, and related simulations, provide important quantitative information on critical parameters for the optimal utilisation of the subsurface, such as storage capacity, fracturing pressure, optimal injection rates and drilling strategy. In the majority of cases, such models are constructed on the basis of seismic and well data, and history matched using production and injection data. On the Arctic archipelago of Svalbard, however, a siliciclastic unit ca. 700-1000 m deep is considered for CO2 storage, and its outcrop equivalents are exposed 15-20 km from the planned injection site. These outcrops provide an important insight into the structural and sedimentological heterogeneity of the target reservoir. The use of modern tools such as photogrammetric digital outcrops enhances our ability to obtain relevant quantitative data for the geomodel. We here present an integrated characterization of the UNIS CO2 project target reservoir, combining well, core, seismic, EM and outcrop data, to build a realistic model of the planned CO2 storage site.

Original languageEnglish
Title of host publication4th EAGE Workshop on Rock Physics 2017
PublisherEuropean Association of Geoscientists and Engineers, EAGE
Pages44-48
Number of pages5
ISBN (Electronic)9781510850873
DOIs
Publication statusPublished - 2017
Event4th EAGE Workshop on Rock Physics 2017 - Abu Dhabi, United Arab Emirates
Duration: 11 Nov 201713 Nov 2017

Conference

Conference4th EAGE Workshop on Rock Physics 2017
Country/TerritoryUnited Arab Emirates
CityAbu Dhabi
Period11/11/1713/11/17

Funding

We sincerely appreciate the technical and financial support of the Longyearbyen CO2 lab project (http://co2-ccs.unis.no) and its partners. Schlumberger and Cegal provided academic licenses of Petrel and the Blueback Toolbox, respectively. Harald Elvebakk (Norwegian Geological Survey) conducted the wireline logging of DH4. This research is funded by the FME-SUCCESS centre hosted by Christian Michelsen Research and funded by the Norwegian Research Council (grant number 193825/S60) and ARCEx partners and the Research Council of Norway (grant number 228107).

FundersFunder number
Norges forskningsråd193825/S60, 228107

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