The mechanical behavior of anhydrite and the effect of CO2 injection

Suzanne Hangx; Christopher Spiers; Colin Peach

doi:10.1016/j.egypro.2009.02.140

The mechanical behavior of anhydrite and the effect of CO2 injection

Suzanne Hangx^*, Christopher Spiers, Colin Peach

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › Academic › peer-review

Abstract

Maintaining caprock integrity is important to long-term geological CO₂ storage. Worldwide, many depleted oil and gas reservoirs, and several current injection sites, are capped by anhydrite caprock. We investigated the effect of CO₂ on the mechanical strength of Zechstein anhydrite, which caps many potential CO₂ storage sites in the Netherlands. No short-term chemical effects of CO₂ and pore fluid on the strength of anhydrite were observed. Reaction of bulk anhydrite with CO₂-saturated solution was slow, though the relative fast reaction of fault gouge material (anhydrite+CO₂+H₂O→carbonates) could affect long-term mechanical behavior and transport properties.

Original language	English
Pages (from-to)	3485-3492
Number of pages	8
Journal	Energy Procedia
Volume	1
Issue number	1
DOIs	https://doi.org/10.1016/j.egypro.2009.02.140
Publication status	Published - Feb 2009
Event	9th International Conference on Greenhouse Gas Control Technologies, GHGT-9 - Washington DC, United States Duration: 16 Nov 2008 → 20 Nov 2008

Bibliographical note

Funding Information:
This research was funded by Shell International Exploration and Production and performed within WorkPackage 4.1 Subsurface mineralisation of the Dutch national research project CATO, CO2 capture, transport and storage. We thank Eimert de Graaff, Gert Kastelein, and Peter van Krieken for technical assistance.

Funding

This research was funded by Shell International Exploration and Production and performed within WorkPackage 4.1 Subsurface mineralisation of the Dutch national research project CATO, CO2 capture, transport and storage. We thank Eimert de Graaff, Gert Kastelein, and Peter van Krieken for technical assistance.

Keywords

anhydrite
caprock integrity
CO effect
failure behaviour
healing
mechanical strength

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10.1016/j.egypro.2009.02.140

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title = "The mechanical behavior of anhydrite and the effect of CO2 injection",

abstract = "Maintaining caprock integrity is important to long-term geological CO2 storage. Worldwide, many depleted oil and gas reservoirs, and several current injection sites, are capped by anhydrite caprock. We investigated the effect of CO2 on the mechanical strength of Zechstein anhydrite, which caps many potential CO2 storage sites in the Netherlands. No short-term chemical effects of CO2 and pore fluid on the strength of anhydrite were observed. Reaction of bulk anhydrite with CO2-saturated solution was slow, though the relative fast reaction of fault gouge material (anhydrite+CO2+H2O→carbonates) could affect long-term mechanical behavior and transport properties.",

keywords = "anhydrite, caprock integrity, CO effect, failure behaviour, healing, mechanical strength",

author = "Suzanne Hangx and Christopher Spiers and Colin Peach",

note = "Funding Information: This research was funded by Shell International Exploration and Production and performed within WorkPackage 4.1 Subsurface mineralisation of the Dutch national research project CATO, CO2 capture, transport and storage. We thank Eimert de Graaff, Gert Kastelein, and Peter van Krieken for technical assistance.; 9th International Conference on Greenhouse Gas Control Technologies, GHGT-9 ; Conference date: 16-11-2008 Through 20-11-2008",

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doi = "10.1016/j.egypro.2009.02.140",

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T1 - The mechanical behavior of anhydrite and the effect of CO2 injection

AU - Hangx, Suzanne

AU - Spiers, Christopher

AU - Peach, Colin

N1 - Funding Information: This research was funded by Shell International Exploration and Production and performed within WorkPackage 4.1 Subsurface mineralisation of the Dutch national research project CATO, CO2 capture, transport and storage. We thank Eimert de Graaff, Gert Kastelein, and Peter van Krieken for technical assistance.

PY - 2009/2

Y1 - 2009/2

N2 - Maintaining caprock integrity is important to long-term geological CO2 storage. Worldwide, many depleted oil and gas reservoirs, and several current injection sites, are capped by anhydrite caprock. We investigated the effect of CO2 on the mechanical strength of Zechstein anhydrite, which caps many potential CO2 storage sites in the Netherlands. No short-term chemical effects of CO2 and pore fluid on the strength of anhydrite were observed. Reaction of bulk anhydrite with CO2-saturated solution was slow, though the relative fast reaction of fault gouge material (anhydrite+CO2+H2O→carbonates) could affect long-term mechanical behavior and transport properties.

AB - Maintaining caprock integrity is important to long-term geological CO2 storage. Worldwide, many depleted oil and gas reservoirs, and several current injection sites, are capped by anhydrite caprock. We investigated the effect of CO2 on the mechanical strength of Zechstein anhydrite, which caps many potential CO2 storage sites in the Netherlands. No short-term chemical effects of CO2 and pore fluid on the strength of anhydrite were observed. Reaction of bulk anhydrite with CO2-saturated solution was slow, though the relative fast reaction of fault gouge material (anhydrite+CO2+H2O→carbonates) could affect long-term mechanical behavior and transport properties.

KW - anhydrite

KW - caprock integrity

KW - CO effect

KW - failure behaviour

KW - healing

KW - mechanical strength

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U2 - 10.1016/j.egypro.2009.02.140

DO - 10.1016/j.egypro.2009.02.140

M3 - Conference article

SN - 1876-6102

VL - 1

SP - 3485

EP - 3492

JO - Energy Procedia

JF - Energy Procedia

IS - 1

T2 - 9th International Conference on Greenhouse Gas Control Technologies, GHGT-9

Y2 - 16 November 2008 through 20 November 2008

ER -

The mechanical behavior of anhydrite and the effect of CO2 injection

Abstract

Bibliographical note

Funding

Keywords

Access to Document

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