T300 Carbon Sequestration in Underground Reservoirs

Wednesday, 25 September 2019
1:30 PM - 5:30 PM
Room 127ABC, North Building

IN-SITU RAMAN SPECTROSCOPIC STUDY OF THE DISSOLUTION AND REACTION PROCESS DURING CO-INJECTION SO2 WITH CO2 INTO PORE SPACE AT CONDITIONS RELEVANT TO CARBON CAPTURE AND STORAGE

Paper number: T300-15
Program: Technical Sessions
Time: 5:00 PM – 5:15 PM

Authors

  • Huirong Guo Presenting Author
    China University of Geosciences (Wuhan), School of environmental studies,China, Wuhan,Hubei
  • Qian Zhou
    China University of Geosciences (Wuhan), School of environmental studies,China, Wuhan,Hubei
  • Zhe Wang
    China University of Geosciences (Wuhan), School of environmental studies,China, Wuhan,Hubei

Abstract

Co-injection SO2 with CO2 can reduce the total capture cost, but result to highly reactive water-rock interactions and increase risk of leakage from the storage site. We used Raman spectroscopic imaging method to monitor the multiphase reactive transport processes of co-injection of SO2 together with CO2 in optical cell and micro-model at conditions relevant to carbon capture and storage (CCS). Based on a large number of calibration experiments, we established the quantitative relationship between the Raman spectral parameters and the concentration of SO2-CO2, determined the phase equilibria of the ternary mixture of SO2−CO2−H2O, and observed the dynamic partitioning of the gases between the CO2 rich phase and aqueous phase. Additional, in order to understand the interaction among acid gas, water, and rocks, we observed the reaction of CO2-SO2 mixtures with water saturated silicate particles, we found that SO2 can accelerate the dissolution of silicate and results of precipitation of sulfates, when SO2 is consumed, carbonate precipitation will be produced. Such reaction definitely affects the pore structure and permeability of rocks at some injection sites.

Geological Society of America Abstracts with Programs. Vol. 51, No. 5

doi: 10.1130/abs/2019AM-337962

© Copyright 2019 The Geological Society of America (GSA), all rights reserved. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes. Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information. All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.