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Research Project Profile

Mechanisms and Kinetics of Multiphase Fluid-formation Mineral Reactions in CO2 Geologic Sequestration

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PI: Young-Shin Jun, Washington University in St. Louis
Co-PIs: Daniel Giammar, Washington University in St. Louis; Anurag Mehra, Indian Institute of Technology, Bombay; Sohei Shimada, University of Tokyo, Japan

Goal 1

Identify controlling parameters which can affect GS operation in enhanced oil recovery, deep saline aquifer, enhanced methane bed recovery sites
(Jun and Shimada)

Goal 2

Enhance mineral trapping in carbonate formation using batch CO2-water-rock experiments
(Giammar and Mehra)

Goal 3

Incorporate the experimental information into simple batch geochemical simulations of the evolution of solution and solid phase compositions in potential reservoirs
(Collective Team Effort)
 


Deep Saline Aquifer

Deep saline aquifer

AFM images

 
Coal Seams and Shales
concentration

CO2 concentration in coal seams and overlying rocks for 20 years
after CO2 injection

 


particle

Magnesium carbonate precipitation on a magnesium silicate particle

chart

Reaction and precipitation and concentration profiles for
the four dissolved species in a penetration element in
CO2-Ca(OH)2-CaCO3 system

 

Project summary

Our team's efforts will advance understanding of the mechanisms and kinetics of multiphase fluid-formation reaction with rock or coal under GS conditions. The project will focus on (1) identifying parameters controlling GS operation by multiscale investigation of the fate and transport of injected CO2 in GS sites, (2) linking physical property changes (e.g., porosity and permeability) with geochemical reactions, (3) enhancing mineral trapping in carbonate formation by understanding nucleation rates and mechanisms in CO2-water-rock systems, (4) scaling-up from nanoscale observations to macroscale predictions, and (5) delineating the differences and similarities among GS methods. The proposed research will use multiscale and multidisciplinary techniques and state-of-the-art experimental approaches to improve monitoring and modeling techniques of GS and provide more accurate geochemical and geophysical parameters. The findings can be used to maintain the quality of drinking water, public health, and the environment.

WU Engineering IIT Bombay U. of Tokyo