10 years of SLEIPNER CO2 Storage

1
10 years of SLEIPNER CO2 Storage

• Tore A Torp, Dr.ing.Adviser CO2 Storage,
  StatoilHydro ASA, Norway

2
11 years of SLEIPNER CO2 Storage

• CONTENT
• Low Carbon Diet
• Industrial Experiences with CO2
• Sleipner, In Salah, K12B, Ketzin, Snohvit and
  ???
• VISION

3
Sleipner CO2 injection- Decided in 1992- In
operation since 1996- 1 million tonne
CO2/årTime Magazine,17. May 2004
4
Previous Experiences with CO2 Injection

• Enhanced Oil Recovery (Texas, Hungary, Turkey,
  Brazil,Croatia)
• Natural gas cleaning
• Transport Pipelines Ships
• Natural gas re-injection
• Natural gas underground storageand
• Beer soft drinks, dry cleaning, food packaging
  Every day life

5
Yara CO2-tankers, 1500 m3 capacity
6
The Sleipner field CO2 Treatment and Injection
7

• CO2 Injection Well in "Utsira"

Sleipner A
T
Sleipner
0
500m
CO
Injection
W
ell
2
1000m
CO
2
Utsir
a
F
or
mation
1500m
Sleipner Øst
Production and Injection
W
ells
2000m
0
1000m
500m
1500m
2500m
Heimdal Formation

8
The Utsira Formation
9
SALINE AQUIFER CO2 STORAGE PROJECT
BGS BRGM GEUS IFP NITG-TNO SINTEF
Statoil BP ExxonMobil Total Norsk Hydro Vattenfall
IEA Greenhouse Gas RD Programme Schlumberger
Research NO, DK, NL, FR UK Authorities
10
Time-lapse seismic datasets of CO2 stored in
Utsira formation
11
CO2 distribution June 2006
Plume extension top Utsira time map

• 8,4 million tonnes injected over 10 years
• Plume area 2,8 km2 (1,3 km2 in 2001)
• Plume long axis 3760 m
• Maximum distance from injection point 2560m
• Maximum speed of front since 2004 250 m/year,
• Distance from CO2 to wells
• Exploration well 15/9-13 430m, decreasing about
  12 m/year
• D-template about 2 km straight west of northern
  plume
• 15/9-19 wells about 4,5 km north of plume

saddle
3,76 km
Injection point
15/9-13
Seismic section
Plume outline June 2006
430m
Plume outline Oct 2001
Amplitude maps of the uppermost horizon, in 2001
(left), 2004 (middle) and 2006 (right). Hot
colours represent higher amplitudes and thicker
CO2 accumulation.
12
Simulated picture of the distribution of CO2
after three years. Radius of largest bubble 800 m
and the total plume 200 m high. Ref SINTEF
Petroleum 2001
13
Dissolution of CO2 in the Utsira Brine
Year 2412
Year 2021
Year 2621
Year 5019
Year 7018
Source Gemini No. 1, 2004 (NTNU and Sintef)
14

• SACS Project 1998-2002

• WHAT WE DID ACHIEVE
• 3D Seismic proven, Gravimetry tested
• Reservoir simulation tools partly proven
• Geology and Geochemistry of Utsira mapped
• Reason to expect the CO2 to stay for thousands of
  years DOCUMENTATION
• SACS Best Practice Manual, 1.version.
• Download from www.co2store.org, see page SACS.

15
Demonstrations of CO2 storage
SLEIPNER
SNØHVIT
WEYBURN
KETZIN
IN SALAH
FRIO BRINE
Nagaoka
GORGON
K12B
Source IEA GHG
16
Sleipner CO2 Injection
17
SAFETY STRATEGY

• - Prepare
• Detect
• Remediate

18
What is keeping the CO2 down?

• Trapping Mechanisms
• Closure - from day one faults?
• Micro-pore trapping - during injection - lasting
• Dissolution in water - sinking to the bottom
  centuries
• Mineral binding - precipitating solids
  centuries/millennia

19
Possible Leakage?

• Leakage ways?
• WELLS - Corrosion of cement steel
• Faults/Cracks Overpressure critical
• Underground fluid mobility Site specific
  Prevention
• Detection
• Remediation

20
Monitoring and safety over TIME?

• Before start Site selection, Planning and Risk
  assessment gtlicence
• During injection Monitoring Watch the barn
  doors gt report
• Closure Monitoring and long-term risk gt
  agreement
• Post-closure Monitoring gradually less gt
  hand-over? Safety against leakage will be
  better over time!

21
CO2 Capture and Storage (CCS) needs two legs to
walk!

• Leg 2 COST of Capture
• Energy use
• Costs
• ? Better technologies

• Leg 1 TRUST in Storage
• Methods from oil and gas industry
• Geology varies from place to place
• ? More demonstrations

• Pace CO2 Transport
• Pipeline
• Ship
• ? Large projects

22
Vision

23
SLEIPNER - 10 years of CO2 Storage

• THANKS for your attention!
• QUESTIONS?