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Title: Exploratory Research on Simulation of CO2-Brine-Mineral Interactions

Abstract

Application of many carbon sequestration strategies requires knowledge of thermodynamic properties for the extremely complex chemical system of CO{sub 2}-SO{sub 2}-H{sub 2}O-NaCl-CaCl{sub 2}-MgCl{sub 2}. This University Coal Research Phase I program has been successful and highly productive in exploring an approach to develop an equation of state (EOS) to describe thermodynamic properties in the above chemical system. We have compiled available laboratory experimental data and thermodynamic models, and evaluated their appropriateness for the carbon sequestration process. Based on this literature review, we provided an improved CO{sub 2} solubility model for the CO{sub 2}-H{sub 2}O-NaCl system, which incorporates newly available experimental measurements funded by DOE, and is valid in temperature range from 273 to 533 K, pressure from 0 to 2000 bar, and salinity from 0 to 4.5 molality of NaCl equivalent. The improved model also greatly improves the computational efficiency of CO{sub 2} solubility calculations and thus is better suited to be incorporated into large computer simulation models (e.g., reservoir simulation models). The literature review and model development provided insights of the data needs and directions for future work. Synergetic collaboration with DOE scientists has resulted in simulations of injected CO{sub 2} fate in sandstone aquifer with a one-dimensional numericalmore » coupled reactive transport model. We evaluated over 100 references on CO{sub 2} solubility and submitted two manuscripts to peer-reviewed journals. One paper has been accepted for publication in ''Environmental Geosciences''.« less

Authors:
;
Publication Date:
Research Org.:
University of Pittsburgh
Sponsoring Org.:
USDOE
OSTI Identifier:
862200
DOE Contract Number:
FG26-03NT41806
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; AQUIFERS; CARBON SEQUESTRATION; COAL; COMPUTERIZED SIMULATION; EFFICIENCY; SALINITY; SANDSTONES; SIMULATION; SOLUBILITY; THERMODYNAMIC MODEL; THERMODYNAMIC PROPERTIES; TRANSPORT

Citation Formats

Chen Zhu, and Shiao hung Chiang. Exploratory Research on Simulation of CO2-Brine-Mineral Interactions. United States: N. p., 2005. Web. doi:10.2172/862200.
Chen Zhu, & Shiao hung Chiang. Exploratory Research on Simulation of CO2-Brine-Mineral Interactions. United States. doi:10.2172/862200.
Chen Zhu, and Shiao hung Chiang. Tue . "Exploratory Research on Simulation of CO2-Brine-Mineral Interactions". United States. doi:10.2172/862200. https://www.osti.gov/servlets/purl/862200.
@article{osti_862200,
title = {Exploratory Research on Simulation of CO2-Brine-Mineral Interactions},
author = {Chen Zhu and Shiao hung Chiang},
abstractNote = {Application of many carbon sequestration strategies requires knowledge of thermodynamic properties for the extremely complex chemical system of CO{sub 2}-SO{sub 2}-H{sub 2}O-NaCl-CaCl{sub 2}-MgCl{sub 2}. This University Coal Research Phase I program has been successful and highly productive in exploring an approach to develop an equation of state (EOS) to describe thermodynamic properties in the above chemical system. We have compiled available laboratory experimental data and thermodynamic models, and evaluated their appropriateness for the carbon sequestration process. Based on this literature review, we provided an improved CO{sub 2} solubility model for the CO{sub 2}-H{sub 2}O-NaCl system, which incorporates newly available experimental measurements funded by DOE, and is valid in temperature range from 273 to 533 K, pressure from 0 to 2000 bar, and salinity from 0 to 4.5 molality of NaCl equivalent. The improved model also greatly improves the computational efficiency of CO{sub 2} solubility calculations and thus is better suited to be incorporated into large computer simulation models (e.g., reservoir simulation models). The literature review and model development provided insights of the data needs and directions for future work. Synergetic collaboration with DOE scientists has resulted in simulations of injected CO{sub 2} fate in sandstone aquifer with a one-dimensional numerical coupled reactive transport model. We evaluated over 100 references on CO{sub 2} solubility and submitted two manuscripts to peer-reviewed journals. One paper has been accepted for publication in ''Environmental Geosciences''.},
doi = {10.2172/862200},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 01 00:00:00 EST 2005},
month = {Tue Nov 01 00:00:00 EST 2005}
}

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