A geochemical clogging model with carbonate precipitation rates under hydrothermal conditions

Seung Youl Yoo, Yoshihiro Kuroda, Yoshitada Mito, Toshifumi Matsuoka, Masami Nakagawa, Akiko Ozawa, Kazutoshi Sugiyama, Akira Ueda

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A step-wise numerical calculation method was developed to provide predictions of when and where carbonate deposits might be found through reservoirs during CO2 sequestration. Flow experiments through porous media using a supersaturated carbonate fluid were also performed in order to observe flow rates. In order to evaluate precipitation rates and permeability change in the formation, calculated flow rates based on the proposed geochemical clogging model were compared with the experimentally observed data. Both high and low temperature cases were studied to understand how hydrothermal conditions can affect precipitation rates of carbonate. According to chemical kinetics, growth rates of minerals are generally proportional to the saturation index (S.I.) that depends on temperature. Thus, a supersaturated fluid has the advantage of improving the filtration and the amount of C fixation (σ). However, when the ratio of filtration coefficient (λ) to pore fluid velocity (u) increases, the permeability around the injection point tends to be significantly reduced by carbonate accumulation, and thus, this might result in insufficient injection of CO2. Therefore, it is essential to understand how to control both λ and u so that the precipitation of carbonate can be located as far away from the inlet as possible.

Original languageEnglish
Pages (from-to)67-74
Number of pages8
JournalApplied Geochemistry
Volume30
DOIs
Publication statusPublished - Mar 1 2013
Externally publishedYes

Fingerprint

Carbonates
carbonate
Fluids
fluid
Flow rate
permeability
Reaction kinetics
carbon sequestration
fixation
Minerals
Porous materials
porous medium
Deposits
rate
saturation
kinetics
Temperature
mineral
prediction
experiment

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Pollution
  • Geochemistry and Petrology

Cite this

A geochemical clogging model with carbonate precipitation rates under hydrothermal conditions. / Yoo, Seung Youl; Kuroda, Yoshihiro; Mito, Yoshitada; Matsuoka, Toshifumi; Nakagawa, Masami; Ozawa, Akiko; Sugiyama, Kazutoshi; Ueda, Akira.

In: Applied Geochemistry, Vol. 30, 01.03.2013, p. 67-74.

Research output: Contribution to journalArticle

Yoo, Seung Youl ; Kuroda, Yoshihiro ; Mito, Yoshitada ; Matsuoka, Toshifumi ; Nakagawa, Masami ; Ozawa, Akiko ; Sugiyama, Kazutoshi ; Ueda, Akira. / A geochemical clogging model with carbonate precipitation rates under hydrothermal conditions. In: Applied Geochemistry. 2013 ; Vol. 30. pp. 67-74.
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