2021 International Conference on Resources, Environment and Green Economy (CREGE 2021)
Prof. Fugang Wang

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Personal Web: https://teachers.jlu.edu.cn/wangfugang/zh_CN/index.htm


Biography:

Undertaken more than 40 research projects: including the National Science Foundation, China; Key Research and Development Project of the Ministry of Science and Technology, China; Scientific Research Foundation for the Returned Overseas Chinese Scholars, China Geological Survey Working project, “863” Project of Ministry of Science and Technology, China, etc. Published more than 80 papers, 2 invention patents, Editor in chief of 1 textbook, Participate in writing 3 textbooks and 2 monographs, 1 National standard. Awarded a First Prize of Science and Technology Award of Ministry of Land and Resources, China,a First prize of Hubei Province Science and Technology Progress Award; a First Prize of China Geological Survey Achievement. One published paper was recognized as “Key Scientific Article” by "Advances In Engineering" of Canada.

In recent ten years, Engaging in the study related to geological storage of carbon dioxide. Including the mechanism of the dissolution and precipitation of minerals, the sealing evolution of cap rock, the porosity and permeability evolution of the reservoir and the sealing capability of cap rock system, etc.; And the carbon dioxide migration evolution, storage potential and mechanical response of reservoir system; And the change of water environment characteristics of shallow aquifer caused by injection.


Speech title:

Geological sequestration of carbon dioxide -- to help environmental protection and green economic development


Abstract:

CO2 geological sequestration is a process in which the industrial CO2 is captured and injected into deep strata through injection wells for storage. As one of the most direct ways to reduce CO2, CO2 geological sequestration technology provides an alternative way to solve the contradiction between the current economic development's high dependence on a large amount of fossil energy (which emits a large amount of greenhouse gases mainly composed of CO2 ) and the urgent requirement of carbon emission reduction.

The premise of CO2 geological storage is that there is a suitable storage site. The selection process of sequestration site mainly considers five factors: geological sequestration safety; Storage scale and efficiency; Environmental impacts and risks; Social economy; Constraint conditions of ground engineering. Among the factors to be considered in site selection, it is easier to determine the indicators in terms of social economy and constraints of ground works. However, it is difficult and challenging to consider factors related to the behavior of CO2 in underground geologic bodies, such as the safety of geological storage, the scale and efficiency of storage, and the environmental impact. 

This speech will focus on the seepage, temperature-chemical-stress multi-field coupling physical (fluid migration, phase state transformation, temperature change, stress transfer; changes in porosity and permeability of strata) and chemical (Minerals dissolve and form; Change of water environment characteristics) interaction process. The mechanism of the various process interaction, the quantitative assessment techniques of various physical and chemical processes and its research status are summarized. Suggestions based on science and technology for the future application of CO2 geological sequestration technology are put forward. 

Geological sequestration of carbon dioxide is a systematic project that requires comprehensive consideration of natural conditions and social and economic factors. The wide implementation of this technology can provide an effective solution to the contradiction between rapid economic development and environmental protection of carbon emission reduction.