alternativenergy

Industry Experience of CCS : In Salah

Tony Espie, Advisor, CO2 Storage

2

Krechba

Teg

Reg

Garet elBefinat Hassi Moumene

In SalahGour Mahmoud

Proposed ISG P ipeline

R EB

Hassi B irRekaiz

H assi Messaoud

H assi R ’Mel

Tiguentourine (BP)

02151093

Algiers

Tangiers

Lisbon

Cordoba

Cartagena

M O R O C C O

A L G E R I A

S P A I N

L I B Y A

MAURITANIA M A L I

SkikdaTunis

N I G E R

In Salah Gas Project

Krechba

Tegentour

Reg

Garet elBefinat

HassiMoumene

HassiR’Mel

In SalahGourMahmoud

48” 455km

38” 60km

24” 13km

24” 62km

Krechba

Tegentour

Reg

Garet elBefinat

HassiMoumene

HassiR’Mel

In SalahGourMahmoud

48” 455km

38” 60km

24” 13km

24” 62km

5-10% CO2

<0.3% CO2

In Salah Gas Project

3

In Salah CO2 Re-injection Project

4

In Salah CO2 Profile

Chart 1 - Process Facilities CO2 Emissions by Source - Without CO2 Re-Injection Scheme

0

200,000

400,000

600,000

800,000

1,000,000

1,200,000

1,400,000

1,600,000

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025

2026

2027

2028

2029

2030

Year

Tonn

es

Venting - Without CO2 Re-Injection

Venting - Storage Tanks

Flaring - Process

Fugitives - Process

Combustion - Emergency Power

Combustion - Compression

Combustion - Power Generation

Combustion - Process Heat

Separated (yellow) CO2 stored

Combustion CO2 (blue) vented

5

Krechba Overview

Surface

Vadose

Overburden

Reservoir

6

KRECHBA FIELD – WITH LANDSAT

7

Where is the CO2 going?• Simple simulation – high porosity, does not capture lateral heterogeneity

or faults/fractures

2yrs 5yrs 2yrs 5yrs

Saturation Pressure: up to ~6000psi

8

CO2 Injection to mid 2007

• 70% of total produced CO2 injected to date with 3 injectors on line

• Some injectivity decline due to reservoir pressure increase (not decline in injectivity index), could be improved with greater WHP.

Cumulative Produced CO2

0.010.020.030.040.050.060.070.080.090.0

100.0

%

Vented

Sales Gas

Re-injected

9

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

10

Monitoring Technology: PrioritizationJI

P B

enef

it

JIP CostLow High

Low

High

SatelliteImaging

Geochemistry

Micro-seismic

Flowmeters

Wellheadmonitoring

4D gravityTracers

Dynamic Modelling

Wellbore sampling

Annulus Sampling

4D VSP

Cement CO2 work

4DSeismic

Tiltmeters

Cross-wellEM

Geomechanics

Logging

SeawaterChemistry

Waterchemistry

Surface EM

Aquifer studies

Microbiology

Soil gas

Surface fluxObservation

Wells

Airborne Flux

Park

Optimise

Just Do It

11

Questions ?

120-2079