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Abstract

NCCS Task 9 - Structural derisking
Horda Platform: New Learnings
M.J. Mulrooney1*, J.L. Osmond1, E. Skurtveit1,2, A. Braathen1
1Department of Geosciences, University of Oslo
2Norwegian Geotechnical Institute
Task 9
Breakout 3: Storage
TASK 9: What we investigate visions, objectives, scopes
Horda Platform: New Learnings from PhD/Post doc research
Structural description (Geomodel)
Fault stability analysis
Fault seal analysis
Horda Platform: New Learnings from MSc research
Research status and ongoing work
Outline
NCCS Task 9 - Structural Derisking
Alvar Braathen, Elin Skurtveit, Ivar Midtkandal, Kim Senger
Mark Mulrooney, Johnathon Osmond, Camilla L. Wurtzen, Magnus Soldal, Peter Betlam
Larger project team (NGI, UiO, UNIS)
VISION: Confront knowledge gaps to build confidence in CO2
storage in geological formations
Objectives:
Support (and challenge) the Northern Lights Project
Place NCCS geoscience activity at the forefront of safe CO2 storage studies
Contribute to Norwegian and international CO2 storage in formations of the North Sea
Scopes:
Research: De-risking storage sites/faults; insight validated for the Smeaheia case
Research: Develop work-flows for storage site and fault analysis
Development: Explore satelite storage sites for the Horda Platform, North Sea
Education: Masters and PhD’s, emerging leaders in CO2 storage
NCCS Task 9 fundamental scopes
… much broader than faults
Structural
de-risking
Satelite
storage
Reservoir
quality
and flow
Smeaheia prospects; NL R&D team
Horda Platform geomodeling
Outcrop analogues
FRISK fault-risk method
SUCCESS-NCCS work on Johansen Fm
(southern Troll); NL Aurora team
POROPAC near-well minerals
Identify and de-risk possible
satelite storage sites
ISO2P
gas monitoring
COTEC
Seep signatures
OASIS
Overburden in North Sea
Geoscience studies:
oTectonics &
structural geology
oGeomechanics
oSedimentology &
diagenesis
Structural de-risking
of CO2 storage site
Why is CO2 storage different
from HC production?
Increased fluid pressure
Seeps and leaks not
acceptable
Pressure?
Vertical flow bypassing seals?
Seep to overburden?
Ruthquist 2012 geomechanics of CO2 Storage
in deep sedimentary formations
Tora b i et al. 2015
CO2 seep and leak paths
Challenges
Predicting influence of
structures
Establish geomechanical
boundary conditions
Fault risking
Juxtaposition
Fill-spill scenarios
Regional geological models
Overburden aquifers-
aquitards
Gas chimneys (seeps)
Pockmarks (current/historic)
Case X - leak
Water-HC contact
Case Z underfilled; roof?
Færseth et al. 2007
Case Y partly leak
Study Area
AURORA
Structural Description
A 3D Structural analysis of the Smeaheia fault block, northern Horda Platform, Norwegian North Sea
Fault stability analysis
Fault stability analysis of seismic scaled faults, northern Horda Platform, Norwegian North Sea
In situ stress state
Pore pressure
Fault orientation/geometry
Geomechanical properties of the fault rock
cohesion
angle of internal friction
Critically stressed faults up fault leakage
τ
Stress acting on a plane
Fault seal analysis
Across-fault and top seal potential for CCS in Viking Group sandstones of the Horda Platform
… subject of next talk
MSC Theses 2019
Distribution and spatial statistics of pockmarks above the Smeaheia CO2 storage area
https://www.duo.uio.no/handle/10852/69776
https://www.duo.uio.no/handle/10852/70052
MSC Theses 2019
Reconstruction of the Subsidence and Uplift History of a proposed CO2 Storage Site in the Northern North Sea
MSC Theses 2019
Tectonostratigraphy and Fault Analysis of the Øygarden Fault Complex Footwall, Northern Horda Platform
https://www.duo.uio.no/handle/10852/70041
MSC Theses 2019
… The Tectono-sedimentary development of Smeaheia on the Horda Platform with a focus on the Cretaceous
https://www.duo.uio.no/handle/10852/69997
MSC Theses 2020
1. Fault seal juxtaposition and CO2migration in the early Jurassic Johansen Formation, Horda platform
2. Permo-Triassic rifting and basin formation; Smeaheia-Troll region (Horda Platform) analysis of future
CO2 storage sites
3. Fracture characterization of the Agardhfjellet Formation in central Spitsbergen: insights from drill core
and outcrop data … 2 students
4. Experimental study addressing fault slip stability … advertised
Manuscripts in press/prep.
A 3D Structural analysis of the Smeaheia fault block, northern Horda Platform, Norwegian North Sea
Fault stability analysis of seismic scaled faults, northern Horda Platform, Norwegian North Sea
Quaternary pockmark distributions informed by 3D seismic interpretation above the Horda Platform,
northern North Sea
Across-fault and top seal potential for CCS in Viking Group sandstones of the Horda Platform
Scientific Contributions 2019
https://project.sintef.no/eRoom/energy/NCCS/0_a8c8a
https://www.sintef.no/projectweb/nccs/research/structural-derisking/#/
Posters (here)
This publication has been produced with support from the NCCS Centre, performed under the
Norwegian research program Centres for Environment-friendly Energy Research (FME). The authors
acknowledge the following partners for their contributions:Aker Solutions, Ansaldo Energia,CoorsTek
Membrane Sciences, Emgs,Equinor,Gassco,Krohne,Larvik Shipping, Norcem,Norwegian Oil and
Gas, Quad Geometrics, Shell, Total, Vår Energi,and the Research Council of Norway (257579/E20).
Work was conducted in close collaboration with the Northern Lights project (Equinor,Total, Shell).
We gratefully acknowledge Schlumberger Software for the provision of academic licenses for Petrel
E&P Software Platform and Midland Valley for the provision of academic licenses for the Move
Software Suite.
Acknowledgements
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