RESEARCH POSTER PRESENTATION DESIGN © 2012

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Beneath Longyearbyen, in Central Western Svalbard, the Upper Triassic to Lower Jurassic (Carnian-Bathonian) Kapp Toscana Group is targeted to store CO2 emitted by the local energy plant (Braathen et al. 2012). The targeted reservoir is strategically placed. Previous studies (Dallmann, 1999) show that the reservoir largely consists of tidal and marginal marine deposits belonging to the extensive westwards prograding Carnian coastline (Riis and Lundschien, 2008; Glørstad-Clark 2010).

ABSTRACT

OBJECTIVES

PRELIMINARY REFLECTIONS

REFERENCES

Braathen et al. 2012. In press. Longyearbyen CO2 lab of Svalbard, Norway – first assessment of the sedimentary succession for CO2 storage. Norwegian Geological Journal. Dallmann, W. K. (1999). Lithostratigraphic lexicon of Svalbard: review and recommendations for nomenclature use : Upper Palaeozoic to Quaternary bedrock. Tromsø, Norsk polarinstitutt. Dalrymple, R. W. and K. Choi (2007). "Morphologic and facies trends through the fluvial-marine transition in tide-dominated depositional systems: A schematic framework for environmental and sequence-stratigraphic interpretation." Earth-Science Reviews 81(3-4): 135-174. Farokhpoor, R., O.Torsæter, et al. (2010). "Experimental and Numerical Simulation of CO2 Injection Into Upper-Triassic Sandstones in Svalbard, Norway." Glorstad-Clark, E., J. I. Faleide, et al. (2010). "Triassic seismic sequence stratigraphy and paleogeography of the western Barents Sea area." Marine and Petroleum Geology 27(7): 1448-1475. Mørk, R. Knarud, et al. (1982). "Depositional and diagnetic environments of the Triassic and lower Jurassic succession of Svalbard. ." In: Embry, A.F., Balkwill, H.R. (Eds.) Arctic Geology and Geophysics. Canadian Society of Petroleum Geologist, Calgary, Alberta, Canada. Nagy, J., S. Hess, et al. (2011). "Marine shelf to paralic biofacies of Upper Triassic to Lower Jurassic deposits in Spitsbergen." Palaeogeography Palaeoclimatology Palaeoecology 300(1-4): 138-151. Riis, F., B. A. Lundschien, et al. (2008). "Evolution of the Triassic shelf in the northern Barents Sea region." Polar Research 27(3): 318-338. Worsley, D. (2008). "The post-Caledonian development of Svalbard and the western Barents Sea." Polar Research 27(3): 298-317.

CONTACT

Geological input to Carbon storage: from outcrop to simulator (GeC) UNIS CO2 LAB

The aim of the study is to describe tidally influenced sediments and their inherent latereal heterogeneities in such detail that their characteristics can be parameterized and implemented into a reservoir model, successfully predicting fluid behavior. Additional foci are improved understanding of tidal systems and the environments prevailing when the studied sediments were deposited. The study of heterogenities in tidal deposits can lead to improved reservoir modeling. This will especially benefit the Longyearbyen CO2-project and reservoir modeling in tidal deposits in general.

Results will provide an overview of the range of facies and architecture that can be expected marginal marine sedimentary successions influenced by tidal forces. The identified variation in geometry, grain size and porosity/permeability will yield quantified parameters that can be applied condition a reservoir model which can successfully forward, and reverse model the targeted CO2 reservoir. The study will be presented in a PhD ending March 1215.

1University Centre in Svalbard, 2University of Bergen, 3Centre of Integrated Petroleum Research

Berit Husteli1,2, M. Jensen1, S. Olaussen1, I. Midtkandal1 J. Tveranger3 & W. Helland-Hansen2

Tidally Related Heterogenities Sought Parameterized For Refined Reservoir Model

DATA AND DATA COLLECTION

Cases of study: •Cores – detailed description •Deltaneset – Outcrops in a beach cliff 2 km north of injection site •Edgeøya – Eastern Svalbard - fieldwork in equivalent strata in August 2012 •Tertiary tidal depostis in outcrops and cores for comparison •Statigraphic logs from previous workers •LIDAR scans •Tidalites 2012

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8m

A selection of logs and photos from July 2012 fieldwork at Deltaneset, from middle of the panorama.

Composite log, A. Mørk

Photo; S. Olaussen

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Aproximately 0.6 km

Presenting data from fieldwork finished July 2012.