Experimental and numerical study of residual CO2 trapping in porous sandstone

Keigo Kitamura, Tetsuya Kogure, Osamu Nishizawa, Ziqiu Xue

    Research output: Contribution to journalConference articlepeer-review

    6 Citations (Scopus)

    Abstract

    To understand the structural and residual CO2 trapping mechanism, we conducted laboratory experiments and 2-D fluid flow simulations. The results of elastic wave velocity measurements indicate that there are strong effects of injected CO2 volume on elastic wave velocities. We calculated CO2 saturation from changes of Vs and estimated the irreducible water saturation and residual CO2saturation. We also discovered the strong effect of small-scale heterogeneity of pore structure on fluid behavior by 2-D fluid flow simulation. The simulation results indicated that the laminae restricted fluid flow and stored CO2 as the residual trapped CO2. These results indicate that the smallscale heterogeneity is important to forming residual trapped CO2.

    Original languageEnglish
    Pages (from-to)4093-4098
    Number of pages6
    JournalEnergy Procedia
    Volume37
    DOIs
    Publication statusPublished - 2013
    Event11th International Conference on Greenhouse Gas Control Technologies, GHGT 2012 - Kyoto, Japan
    Duration: Nov 18 2012Nov 22 2012

    All Science Journal Classification (ASJC) codes

    • Energy(all)

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