CO2 geological sequestration In Salah Gas Algeria

19 Pages·2011·1.08 MB·English

CO2 geological sequestration
In Salah Gas
Algeria
Mohamed Keddam
September 2011
Project location Hassi Messaoud
Compression
Hassi R’Mel
Station
CNDG
38”/5 km
Krechba
21
Phase 1:
38”/60 km Teg
12
Drilling of 25 wells
- 22 producers 24”/13 km
- 3 injectors 24”/62 km
32”/83 km
Reg
Construction of 3 CPF 14
32”/39 km
Compression Station at Hassi R’Mel
Hassi
A 48” Pipeline, 460 km long 3
Moumene
3
Garet el 32”/36 km
Befinat
In Salah
10
30”/37 km
Gour Mahmoud
10
CNDG
Phase 1
Hassi R’Mel
Reserves: 24 BCM
Carb.
CO2: 1%
173 bars / 102C
Krechba Reserves: 21.4 BCM
CO2: 9.1% Dev.
325 bars / 144C
Reserves: 76.5 BCM
Teguentour
CO2: 8.6%
290 bars / 149C
Reserves: 45.4 BCM
CO2: 3.8%
Reg
178 bars / 108C
Key elements
A multi-phase Project, of multiples fields
 Reserves in place 340 BCM
 Recoverable Reserves 232 BCM
 Start of the Project, phase 1 November 2001
 First gas July 2004
 Plateau 9 BCM / year
 Duration of the plateau 14 years
 Duration of the Contract 30 years
 Investment phase 1 1.7 billion dollars
 Compression start up As from 2010
 Investment for Compression 0.8 Billion dollars
 Southern Fields Production As from 2012
 2.3 billion dollars
Estimated investment for Southern Fields
 73
Total number of wells for the two phases
Production profiles
0.42
12
Compression
0.35
10
) 0.28
M 8
C
B
(

n (
0.21 t
o 6 c
i f
t )
c
u
d
o
r 4 0.14
P
0.07
2
0.00
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Year
CO2 produced by source
1,800,000
1,600,000
1,400,000
CO2 extracted from gas
1,200,000
CO extrait sdue gqazuestrated
2
1,000,000
800,000
600,000
400,000
Autre CO
2
200,000
0
Year
Year
Some Figures
• 0,7 billion of m3 per year of CO re-injected
2
• 60% reduction of greenhouse effect gas
• 20 Million tons of CO2 re-injected through out the
life of the project
• Analogies
• Equivalent of 200 000 cars running 30 000 km / year
• 200 km2 forest equivalent
• Re-injection Capex: 100 Million
• Estimated Re-injection Opex: 10 Million/year
SEQUESTRATION OPTIONS
• Site choice criteria
• Integrity and tightness of the reservoirs
• Sufficient storage capacity
• Good porosity
• Moderate Pressure
• Carboniferous Reservoir at Krechba
• Tight reservoir and high storage capacity
• Availability of seismic data.
• Existence of exploration and evaluation wells
• A unique facility of CO2 extraction
CO2 extraction
and dehydration
CO2 content Water content
Stripper
CO
2
Absorber
Future
Compression
Glycol
Krechba
regeneration
Glycol Contactor
Gas
preheating
Inter-field
pipelines
To amine regeneration
CO2 to re-injection
Pigging trap Fuel
Amine regeneration Gas
Train 2
Pipeline
To R'Mel
Pigging