Progress Report on Japan's CO2 Geological Storage Technology

Kinichiro Kusunose Geological Survey of Japan, AIST

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Outline of Today’s presentation

Ø  Reduction targets and Development schedule

Ø Some topics on R&D programs

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Japan’s total greenhouse gas emission and reduction targets

Bt

Fy

Reduction targets (20Fy -3.8％　30Fy -25％ 50Fy -８０％) *Base period is 2005 Fy

Reduction Targets

Carbon Tax 16Fy 2.3B USD Used for an energy-saving measure and renewable energy subsidies

Bt Convert into CO2

Policy

Tentative schedule for CO2 Geol. Storage Demo. Project in Japan

2012 2010 2014 2016 2020 2008

Large-scale Demonstration Plant Project by JAPAN CCS Co.

Site selection Well drilling Preparation

Injection

Pilot Demo. Plant Nagaoka Project by RITE

10,000 t 20-40 t/day

100,000 t/year

Commercial Plant

>1Mt

Governmental Initiative Industrial Initiative

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project operator (JCCS)

Supporting technology

(RITE /Oil co. .…)

Basic technology (GSJ-AIST/RITE…)

Research Association 　　2016～

Demonstration project 　　　　Implementation system

Site selection for future project

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2014 2016 2018 2021

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Re-Analysis of ex. Data 8

•  2D seismic　survey

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• 3D seismic

• survey

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• Exploration well logging

Mikawa Coal power plant: CO2 are captured from exhaust gas

Off-shore Storage (FS)

MOE Economically feasible capture technology for coal power plant

METI (Promotoion)

MOE (Regulation)

METITomakomai Demonstration Proj.

Outline on Today’s presentation

Ø  Reduction targets and Development schedule

Ø Some topics on R&D programs

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RITE: Optical Fiber Borehole Strain Gauge

Physical parameters (strain, temp., pressure) affect frequency shift of Scattering light but their effects can be separated by measuring both Brillouin scattering and Rayleigh scattering

Field test in a deep borehole

New method can measure strain along well continuously

strain

Optical fiber

Casing pipe

Load

packer

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RITE: Micro seismic management system

Micro seismic observation system OBC 3km OBS 4 sets Observation well 3 wells　（2 vertical array, 1 botom hole seismometer) Surface seismometer 1 set

OBC

Traffic light system Monitoring stress state based on Micro- seismic observation and when seismic activity exceed the predetermined threshold level, the system rise an alarm operator To decrease Injection rate or to stop injection

【Methods & Objectives】 l  To provide proper geomechanic

modeling method (to suitable numerical model)

l  Modify THM simulator suitable for soft rock site

l  Calibrate the modeling parameters from laboratory experiments and apply natural analog case study of Matsushiro earthquake swarm

Risk Assessment Monitoring

Management

Fluid Injection …..

Reservoir Evalation Risk Analysis

Geomechanic Modeling : coupled THM modeling (THM : thermo-hydro-mechanical )

? Geological model Numerical midel

Faults

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【実施内容：　　（２）遮蔽性能評価技術開発－断層モデリング】 GSJ-AIST Geomechanic Modeling

Geomechanic modeling (Matsushiro-model)

Ground uplift

Fluid (CO2) from Magma

Matsushiro Earthquake (1965~1967)• Seismic swarm • Water outflow

Ground deformation

Reactivated fault

CO2 injection model

Reservoir pressure (+ΔP) Effective stress (-Δσ)

Permeability Changes in Fault/fracture

Strain (+Δε)

Risk of CO2 leakage ?

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Total waterflow was 107m3 Max event M5.5

Total events 0.7millioni

(4) Geomechanic modeling (cont.)

13Failure area after inflow start

Axial pressure

Confined pressure

せん断後の岩石

Simulation considering geomechanics Collection of geomechanical parameters Deformation-Permeability characterization for soft rocks

Takinoue Fm. TuffFureoi Fm. Mudstone

Takinoue Fm. Sandstone

SlipShear- strain

Onset of slip

Displacement (mm)

Perm

eabi

lity

(mD

)

Evolution of Permeability during Fracturing Processes in Rocks under Conditions of Geological Storage of CO2

Flow Simulator

Mech.Simulator

P,V,T

σ,Φ,κ,µ,..

THM

Thank you for your attention

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