Oil Recovery
• Primary recovery (Natural Depletion)
•Secondary recovery (IOR)
•Tertiary recovery (EOR)
WATERINJ.
(+ 15%)NATURAL
DEPLETION(30%)
NP
WATER-CUT
IRM (+ 5%)
EOR(+ 10%)
Time YearsDiagnosis
Fiel
d O
il R
ate
NP
3rdTYPE
EOR Projects USA
•
0
50
100
150
200
250
1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006
Thermal Chemical
Gas CO2 Miscible
CO2 Immiscible Microbial
EOR Methods
•
0
100
200
300
400
500
600
1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006
Oil
Prod
uctio
n (M
STB
/D)
Thermal Chemical
Gas CO2 Miscible
CO2 Immiscible Microbial
• CO2 EOR Advantage:• Better weep efficiency
• Less Minimum Miscibility Pressure
• Swelling Effect
API=40MMP
T=120f1200psi
T=250f3000psi
Carbon Capture & Safe Sequestration (CCSS) Process
CO2
SourceCapture/
CompressionPipeline Injection/
Storage
Cost breakdown
15%
75%
10%
Capture
StoragePipeline
• CO2 EOR Advantage:• Case Study Iran
ة
Natural Depletion
CO2 -10000MSCF/DayMiscible
N2 -10000MSCF/DayImmiscible