scholarly journals Prediction of Pressure Response at A Monitoring well in Initial Injection Stages of CO2 Geological Storage into A Deep Aquifers

2021 ◽  
Vol 137 (1) ◽  
pp. 17-23
Author(s):  
Qiang SUN ◽  
Kyuro SASAKI ◽  
Yuichi SUGAI ◽  
Ronald NGUELE
Keyword(s):  
Pressure Response ◽  
Geological Storage ◽  
Monitoring Well ◽  
Deep Aquifers ◽  
Initial Injection

Research on the Mechanism and Capacity of CO2 Stored in Abandoned Coal Mine Gob

2014 ◽  
Vol 522-524 ◽  
pp. 196-200
Author(s):  
Xing Wu Hou ◽  
Ding Guo Huang ◽  
Hang Zheng Li ◽  
Hai Feng Chen ◽  
Xuan Peng
Keyword(s):  
Coal Mine ◽  
Future Research ◽  
Geological Storage ◽  
Storage Mechanism ◽  
Deep Aquifers ◽  
Sequestration Potential ◽  
The Future ◽  
Seal Strength ◽  
Abandoned Coal Mine ◽  
Overburden Strata

To explore new pathways of CO2 geological storage, the mechanism of CO2 stored in abandoned coal mine gob was analyzed through the investigation of the gobs exploitation current situation. Methods to calculate the capacity to store CO2 was proposed based on establishing mathematical model. This paper presented suggestions about how to carry out research in the future. Research suggests that after the coal mine is abandoned, there are large underground spaces consisting of rock cavities of gob caving zone, rock fissures of fractured zone, and permanent residual laneways, which CO2 can be stored, and there will be tremendous sequestration potential. Compared with deep aquifers storage, the space has the advantages of larger scale porosity, simpler storage mechanism, easier injection, more abundant geological data, etc. At the same time, the space also remains problems such as lower seal strength and failure of overburden strata easily causing CO2 leaks, etc. This paper suggests that six aspects should be further researched in the future.

Capillary effect on the tidal response of buried aquifers – an interaction between shallow and deep groundwater systems

2021 ◽  
Author(s):  
Aiyu Zhu ◽  
Chi-Yuen Wang
Keyword(s):  
Capillary Force ◽  
Effective Means ◽  
Two Dimensional ◽  
Capillary Effect ◽  
Deep Groundwater ◽  
Monitoring Well ◽  
Deep Aquifers ◽  
Groundwater Systems ◽  
Thick Layers ◽  
Tidal Response

<p>The interaction between the shallow and deep groundwater systems is important for a number of issues on water resources and the environment but is difficult to evaluate directly. Here we use two-dimensional numerical simulations to show that the tidal response of deep aquifers may be significantly affected by capillary force on the water table. We propose a criterion to evaluate the capillary effect and apply the model to interpret the tidal response of the Arbuckle aquifer in a USGS deep monitoring well in Oklahoma. Our study suggests that the shallow and deep groundwater systems may interact across thick layers of intervening aquitards and that the analysis of the tidal response of deep aquifers may be an effective means to evaluate such interaction.</p>

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