首页|Analysis of pressure response at an observation well against pressure build-up by early stage of CO2 geological storage project

Analysis of pressure response at an observation well against pressure build-up by early stage of CO2 geological storage project

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To ensure a safe and stable CO2 storage,pressure responses at an observation well are expected to be an important and useful field monitoring item to estimate the CO2 storage behaviors and the aquifer pa-rameters during and after injecting CO2,because it can detect whether the injected CO2 leaks to the ground surface or the bottom of the sea.In this study,pressure responses were simulated to present design factors such as well location and pressure transmitter of the observation well.Numerical simu-lations on the pressure response and the time-delay from pressure build-up after CO2 injection were conducted by considering aquifer parameters and distance from the CO2 injection well to an observation well.The measurement resolution of a pressure transmitter installed in the observation well was pre-sented based on numerical simulation results of the pressure response against pressure build-up at the injection well and CO2 plume front propagations.Furthermore,the pressure response at an observation well was estimated by comparing the numerical simulation results with the curve of CO2 saturation and relative permeability.It was also suggested that the analytical solution can be used for the analysis of the pressure response tendency using pressure build-up and dimensionless parameters of hydraulic diffu-sivity.Thus,a criterion was established for selecting a pressure transducer installed at an observation well to monitor the pressure responses with sufficient accuracy and resolution,considering the distance from the injection well and the pressure build-up at the injection well,for future carbon capture and storage(CCS)projects.

CO2 storageSaline aquiferObservation wellPressure responseCO2 saturation

Qiang Sun、Kyuro Sasaki、Qinxi Dong、Zhenni Ye、Hui Wang、Huan Sun

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School of Civil Engineering and Architecture,Hainan University,Haikou,570228,China

Faculty of Engineering,Kyushu University,744 Motooka,Nishi-ku,Fukuoka,819-0385,Japan

Key Laboratory of Equipment Safety and Intelligent Technology for Guangzhou Rail Transit System,Guangzhou,510430,China

Research Fund for the special projects in key fields of Guangdong UniversitiesJapan Society for the Promotion of ScienceScientific Research Fund of Hainan University

2021ZDZX4074JP-20K21163KYQDZR-22122

2024

10.1016/j.jrmge.2023.03.013

岩石力学与岩土工程学报(英文版)
中国科学院武汉岩土力学所中国岩石力学与工程学会武汉大学

岩石力学与岩土工程学报(英文版)

CSTPCD
影响因子：0.404
ISSN：1674-7755
年,卷(期)：2024.16(2)
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