Enhanced Oil RecoveryRahbord Energy Alborz ltd

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 Methods

•

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

• Screening Criteria

• CO2 EOR Advantage:• Better weep efficiency

• Less Minimum Miscibility Pressure

• Swelling Effect

API=40MMP

T=120f1200psi

T=250f3000psi

• CO2 EOR Successful Projects:• Denver USA , Operator: Shell

• CO2 EOR Successful Projects:• Weyburn Canada

• CO2 EOR & Environment

Global Warming

• Global Warming:

• The Role of CCS in CO2 Mitigation:

• What Is CCS:

Carbon Capture & Safe Sequestration (CCSS) Process

CO2

SourceCapture/

CompressionPipeline Injection/

Storage

Cost breakdown

15%

75%

10%

Capture

StoragePipeline

• CCS & CO2 EOR Projects:

• CCS & CO2 EOR Projects:

• CCS & CO2 EOR Projects:

• Addition of CO2 Market:

• CO2 EOR Opportunity in Middle east:

• CO2 EOR Advantage:• Case Study Iran

ة

Natural Depletion

CO2 -10000MSCF/DayMiscible

N2 -10000MSCF/DayImmiscible

• Kuwait Experimental data:

• Egypt study:

• UEA study:

• Visions :

• Strategic Target :

• More than 50,000,000 Tones CO2 Available

• 2 Million Tons CO2 Ready

• At least 300,000 bbl per Day More Oil