NCCS : De-risking CO2 Storage Oslo, 22 Nov Ingrid Anell, Alvar - - PowerPoint PPT Presentation

NCCS : De-risking CO2 Storage

Oslo, 22 Nov Ingrid Anell, Alvar Braathen

DC 1 - CCS for Norwegian industry (0,5-1 Mt/a) DC 2 – Storing Europe’s CO2 (10-100 Mt/a)

NCCS project and Smeaheia storage

(From NCCS website)

(1)Lowering the energy intensity of the system (i.e. increasing efficiency of energy conservation) (2)Lowering carbon intensity of system (substitution to lower C or C-free sources) (3)Increasing capacity and capture rate of carbon sinks

Reducing atmospheric CO2

• 98% of transport and 85% of global

energy comes from fossil fuels

• CO2 in the atmosphere is

increasing due to human activity

• ”Carbon Sequestration” – physical,

chemical, biological, technical

• Increasing vegetation? Storing in
• ceans?

CO 2 Storage

Oil/gas trapped for millions of years: Inject CO2 in traps

CO2 Storage

Traps Sandstone (Space) Mudstone (Seal)

• Normal geotherm - > 800m, CO2

”supercritical” – behaves like gas, density like a fluid

• Optimum depth for “cold” basins is 800-1000

m and for “warm” basins it is 1500-2000m

• Shallow depth - low density (inefficient

storage) + high buoyancy (leakage potential)

• 10-100 yrs – dissolve in pore-fluid
• 100-1000 yrs– react with rock -

mineralisation

CO2 Storage – why so deep?

Sequestration is defined as injection into a storage site without release for the foreseeable future. This is challenging on many levels with regards to finding sites, capturing, transporting and injecting CO2, and

• f great importance - ensuring

minimal leakage and possible adverse effects of such an event.

NCCS – De-risking CO2 Storage

https://archive.epa.gov/ada/web/html/gsc.html

UiO Geo. Research Group

• Structural de-risking – faults,

relays, juxtaposition. Pressure systems and pockmarks.

• Regional overburden analysis

– risks and back-ups.

De-Risking CO2 Storage

• Depositional models
• Analogue systems

Research

Aims and goals

NCCS role vs NORCCS Operator work 1) Discussion partner for Operator 2) Toolbox developer 3) Training of future experts Longer term, toolbox aims:

• 1. Establish aquifers-

aquitards for the

• verburden of the

Smeaheia region

• 2. Identify risks around

shallow seals

• 3. Forecast fluid mobility in
• verburden succession
• 4. Create pressure and flow

forecast for overburden Longer term, toolbox aims:

• 1. Troll-Smeaheia advanced

reservoir to sim. model with 3D faults.

• 2. Improve geomechanical models

that forecast fault reactivation into the 3D realm?

• 3. Develop existing expert method

for analysis of 3D fluid flow on faults (requirements including software

development would be major efforts exceeding NCCS?)

Longer term, toolbox aims: 1) Improved Smeaheia reservoir forecast 2) Qualify satellite storage formations