Experimental study of the capillary pressure of supercritical CO 2

Masao Sorai, Takahiro Funatsu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Relating to the assessment of the cap rock integrity on CO2 geological sequestration, we measured threshold pressure for upercritical CO2 under pressure and temperature conditions of 1,000 m depth (i.e., 10 MPa and 40°C). The present study aims to quantify various factors which affect the variability of rock's threshold pressure and to model the threshold pressure range of a cap rock. We prepared sintered compacts composed of uniformly-sized silica glass beads (0.2-10 μm), and examined a correlation between threshold pressure and permeability for each diameter. The result revealed that threshold pressure of sintered compacts increased drastically with a decrease of component particle size. Moreover, there existed a good linearity between the logarithm of threshold pressure and the logarithm of permeability. The fitted line is an important basis specifically from a viewpoint of safety assessment because it corresponds to the lower limit of threshold pressure of homogeneous rocks.

Original languageEnglish
Pages (from-to)5024-5028
Number of pages5
JournalEnergy Procedia
Volume4
DOIs
Publication statusPublished - Jan 1 2011
Externally publishedYes

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Capillarity
Rocks
Fused silica
Particle size

All Science Journal Classification (ASJC) codes

  • Energy(all)

Cite this

Experimental study of the capillary pressure of supercritical CO 2 . / Sorai, Masao; Funatsu, Takahiro.

In: Energy Procedia, Vol. 4, 01.01.2011, p. 5024-5028.

Research output: Contribution to journalArticle

Sorai, Masao ; Funatsu, Takahiro. / Experimental study of the capillary pressure of supercritical CO 2 In: Energy Procedia. 2011 ; Vol. 4. pp. 5024-5028.
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