Transcript Industry Experience of CCS : In Salah

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Industry Experience of CCS : In Salah
Tony Espie, Advisor, CO2 Storage
In Salah Gas Project
Lisbon
Hassi
R’Mel
S P A I N
Cordoba
Cartagena
Skikda
Algiers
<0.3% CO2
Tunis
48” 455km
Tangiers
Krechba
38” 60km
Hassi Bir
Rekaiz
Hassi R’Mel
M O R O C C O
Hassi Messaoud
REB
Proposed ISG Pipeline
Tegentour
24” 62km
24” 13km
Krechba
Teg
ALGERIA
L I B YA
Reg
Garet el
Befinat
In Salah
5-10% CO2
Reg
Hassi Moumene
Tiguentourine (BP)
Gour Mahmoud
Garet el
Befinat
MAURITANIA
M A L I
Hassi
Moumene
In Salah Gas Project
In Salah
N I G E R
Gour
Mahmoud
02151093
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In Salah CO2 Re-injection Project
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In Salah CO2 Profile
1,600,000
Venting - Without CO2 Re-Injection
1,400,000
Venting - Storage Tanks
Flaring - Process
1,200,000
Fugitives - Process
Combustion - Emergency Power
Tonnes
1,000,000
Combustion - Compression
Combustion - Power Generation
800,000
Combustion - Process Heat
600,000
400,000
200,000
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0
Year
Separated (yellow) CO2 stored
Combustion CO2 (blue) vented
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Krechba Overview
Surface
Vadose
Overburden
Reservoir
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KRECHBA FIELD – WITH LANDSAT
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Where is the CO2 going?
• Simple simulation – high porosity, does not capture lateral heterogeneity or
faults/fractures
Saturation
2yrs
5yrs
Pressure: up to ~6000psi
2yrs
5yrs
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CO2 Injection to mid 2007
Vented
l-0
• 70% of total produced
CO2 injected to date with
3 injectors on line
Sales Gas
Re-injected
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O
ct
-0
4
Ja
n05
Ap
r-0
5
Ju
l-0
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O
ct
-0
5
Ja
n06
Ap
r-0
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Ju
l-0
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O
ct
-0
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Ja
n07
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
Ju
%
Cumulative Produced CO2
• Some injectivity decline
due to reservoir pressure
increase (not decline in
injectivity index), could
be improved with greater
WHP.
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Risk Based Approach to Monitoring
• Injection well :
Ongoing pressure
monitoring
• Early CO2 Breakthrough: Modelling, tracers,
seismic imaging,
observation wells
• Vertical leakage :
Seismic imaging,
microseismic, aquifer
studies, soil gas
sampling, surface flux,
gravity, tiltmeters,
satellite imagery
• Wellbore leakage:
Annulus monitoring, soil
gas sampling,
continuous surface
monitoring, through
casing logging
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Monitoring Technology: Prioritization
Low
Microbiology
Flowmeters
JIP Benefit
Aquifer
studies
Dynamic
Modelling
Water
Seawater
chemistry
Chemistry
Cement
CO2 work
Surface flux
Geochemistry
Geomechanics 4D gravity
Tracers
Just Do It
High
Wellhead
monitoring
Wellbore
sampling
Low
Surface EM
Park
Tiltmeters
Airborne Satellite
Flux Imaging
Annulus
Sampling
Cross-well
EM
Microseismic
Soil gas
JIP Cost
Logging
4D VSP
Observation
Wells
Optimise
4D
Seismic
High
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Questions ?
120-2079
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