The Potential Effect of CO2-Water-Rock Reaction on The Caprock Formation (Mudstone) Case Study

2012 ◽  
Vol 518-523 ◽  
pp. 140-143 ◽  
Author(s):  
Yan Li ◽  
Hai Long Tian ◽  
Zou Zhuo ◽  
Yuan Sun
Keyword(s):  
Water Environment ◽  
Potential Effect ◽  
Geometrical Model ◽  
Geological Storage ◽  
Co2 Leakage ◽  
Co2 Geological Storage ◽  
Result Show ◽  
Leakage Assessment ◽  
Selection Of

By using a 1D column geometrical model this paper carried out research on the effects of CO2 penetration on the caprock properties. The result show that due to CO2 ingression the formation water environment changed greatly. The pH reduced to 3.8 from initial 7.48 and then buffered to 5.6; The supercritical CO2 reached to 0.006 m in the caprock, but aqueous CO2 reached to 1.1 m. The self-sealing efficiency worked after about 25 years, and the relevant minerals were calcite, quartz, kaolinite and calcite. The research will provide some technical reference for site selection of CO2 geological storage projects and CO2 leakage assessment.

scholarly journals Study on Field-scale of CO2 Geological Storage Combined with Saline Water Recovery: A Case Study of East Junggar Basin of Xinjiang

2018 ◽  
Vol 154 ◽  
pp. 36-41 ◽  
Author(s):  
Xin Ma ◽  
Xufeng Li ◽  
Guodong Yang ◽  
Wang Huang ◽  
Yujie Diao ◽  
...  
Keyword(s):  
Saline Water ◽  
Junggar Basin ◽  
Water Recovery ◽  
Geological Storage ◽  
Co2 Geological Storage ◽  
Field Scale

scholarly journals Numerical Study of CO2 Geological Storage in Saline Aquifers without the Risk of Leakage

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5259
Author(s):  
Yuan-Heng Li ◽  
Chien-Hao Shen ◽  
Cheng-Yueh Wu ◽  
Bieng-Zih Hsieh
Keyword(s):  
Supercritical Co2 ◽  
Numerical Study ◽  
Simulation Method ◽  
Co2 Injection ◽  
Geological Storage ◽  
Co2 Leakage ◽  
Co2 Geological Storage ◽  
Index Method ◽  
Deep Saline Aquifer ◽  
Supercritical Co2 Injection

The purpose of this study is to reduce the risk of leakage of CO2 geological storage by injecting the dissolved CO2 solution instead of the supercritical CO2 injection. The reservoir simulation method is used in this study to evaluate the contributions of the different trapping mechanisms, and the safety index method is used to evaluate the risk of CO2 leakage. The function of the dissolved CO2 solution injection is performed by a case study of a deep saline aquifer. Two scenarios are designed in this study: the traditional supercritical CO2 injection and the dissolved CO2 solution injection. The contributions of different trapping mechanisms, plume migrations, and the risk of leakage are evaluated and compared. The simulation results show that the risk of leakage via a natural pathway can be decreased by the approach of injecting dissolved CO2 solution instead of supercritical CO2. The amount of the CO2 retained by the safe trapping mechanisms in the dissolved CO2 solution injection scenario is greater than that in the supercritical CO2 scenario. The process of CO2 mineralization in the dissolved CO2 solution injection scenario is also much faster than that in the supercritical CO2 scenario. Changing the injection fluid from supercritical CO2 to a dissolved CO2 solution can significantly increase the safety of the CO2 geological storage. The risk of CO2 leakage from a reservoir can be eliminated because the injected CO2 can be trapped totally by safe trapping mechanisms.

scholarly journals Application of SWMM 5.1 in flood simulation of sponge airport facilities

2020 ◽  
Vol 81 (6) ◽  
pp. 1264-1272 ◽  
Author(s):  
Jing Peng ◽  
Lei Yu ◽  
Yanyu Cui ◽  
Ximin Yuan
Keyword(s):  
Control Strategies ◽  
Water Environment ◽  
Storage Tanks ◽  
Runoff Simulation ◽  
Flood Simulation ◽  
Impervious Area ◽  
Rainwater Runoff ◽  
Airport Runway ◽  
Selection Of

Abstract Construction of an airport runway makes the impervious area of the airport high, which leads to the deterioration of the water environment and frequent waterlogging disasters. The selection of sponge airport facilities (e.g., pump, multi-functional storage tanks, green roof) to mitigate airport flooding has been a crucial issue in China. This study aims to develop a conceptual rainwater-runoff simulation model, which can take into account the effects of such facilities of a sponge airport. Taking catchment N1 of Beijing Daxing Airport as a case study, SWMM 5.1 was implemented to develop three sponge airport models (one pump, two pumps, combination of pump and multi-functional storage tanks). A sensitivity analysis was carried out to guarantee the robustness of the developed models. A 1-hour rainfall scenario with a 5-year return period was employed on the three sponge airport models. The results showed that the effect rankings of the control strategies on the water depth, volume and peak inflow of catchment N1 were comparable – combined strategies (combination of pump and multi-functional storage tanks) > one pump and two pumps. The conceptual and hydrological models developed in this study can serve as a simulation tool for implementing a real-time rainwater drainage control system in Beijing Daxing Airport.

scholarly journals New Equipment for Complementary Petrophysical Characterization of Rocks for Deep Geological Storage

Proceedings ◽  
2018 ◽  
Vol 2 (23) ◽  
pp. 1494
Author(s):  
Pablo Cienfuegos-Suárez ◽  
Efrén García-Ordiales ◽  
Jorge Enrique Soto-Yen
Keyword(s):  
Co2 Sequestration ◽  
Chemical Processes ◽  
Geological Storage ◽  
Co2 Geological Storage ◽  
Coal Seams ◽  
Geological Formation ◽  
Physical And Chemical ◽  
Geological Formations ◽  
Selection Of

The geological storage of CO2 in coal seams is an emerging option in the portfolio of mitigation actions for reduction of atmospheric greenhouse gas concentrations. A background study focused to the selection of favorable sites for CO2 geological storage are necessary steps, and in the selection of reservoirs for CO2 sequestration a complete petrophysical characterization of the sample is necessary. To complement the classical petrophysical parameters measured on the rocks of the geological formation with potential to be used to store the injected CO2, a new equipment has been designed and constructed to simulate at a laboratory scale the inter-action between the rock and the injected CO2, at different pressure conditions simulating depths of the geological formations up to 1000 m. The design and construction of this equipment allows us to investigate known physical and chemical processes that occur between the rocks store/seal and the fluid injected into geological storage. Essays focused to study the alterability of the rock in contact with CO2 either in subcritical or supercritical state, as well as essays for CO2 injectivity on the rock can be accomplished.

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