Abstract
Shale gas is a relatively clean-burning fossil fuel, produced by hydraulic fracturing. This technology may be harmful to the environment; therefore, environmentally friendly methods to extract shale gas have attracted considerable attention from researchers. Unlike previous studies, this study is a comprehensive investigation that uses systematic analyses and detailed field data. The environmental challenges associated with shale gas extraction, as well as measures to mitigate environmental impacts from the source to end point are detailed, using data and experience from China’s shale gas production sites. Environmental concerns are among the biggest challenges in practice, mainly including seasonal water shortages, requisition of primary farmland, leakage of drilling fluid and infiltration of flowback fluid, oil-based drill cuttings getting buried underground, and induced seismicity. China’s shale gas companies have attempted to improve methods, as well as invent new materials and devices to implement cleaner processes for the sake of protecting the environment. Through more than 10-year summary, China’s clean production model for shale gas focuses on source pollution prevention, process control, and end treatment, which yield significant results in terms of resource as well as environmental protection, and can have practical implications for shale gas production in other countries, that can be duplicated elsewhere.
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Acknowledgements
This work was supported by the National Key Technology R & D Program of China (No. 2011ZX05028-002). The authors acknowledge colleagues from the PetroChina Research Institute of Petroleum Exploration and Development for their help with this study.
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Shikui Gao received her B.Sc. and M.Sc. Degrees in Economics from China University of Geosciences, China and a Ph.D. in Economics and Management from China University of Petroleum (Beijing), China. She is an associate professor at China University of Geosciences (Beijing), China. associate prof. Gao’s research is broadly interdisciplinary, anchored on a core expertise in economic evaluation and in environmental systems. She has published about 30 peer-reviewed articles, often collaboratively, in areas including environmental science; economics and management; and petroleum science.
Quanzhong Guan received his M.S. and Ph.D. in Geological Resources and Geological Engineering from PetroChina Research Institute of Petroleum Exploration and Development, and China University of Petroleum (Beijing), China. He is a lecturer in Petroleum Geology at the College of Energy, Chengdu University of Technology, China. His research explores the unconventional reservoirs of gas shales, and environmental risks. He has published 45 peer-reviewed articles and is an editor for Natural Gas Industry Journal.
Dazhong Dong received his M.S. and Ph.D. in Geological Resources and Geological Engineering from PetroChina Research Institute of Petroleum Exploration and Development, and China University of Petroleum (Beijing), China. He is a professor in Petroleum Geology at the PetroChina Research Institute of Petroleum Exploration and Development, China. His research focuses on petroleum geology and energy exploration evaluations. He has published 73 peer-reviewed articles and is an editor for core journals on petroleum science.
Fang Huang earned his BA in management from China University of Geosciences (Beijing) and is currently a master’s student in the University.
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Gao, S., Guan, Q., Dong, D. et al. Environmental risks of shale gas exploitation and solutions for clean shale gas production in China. Front. Earth Sci. 15, 406–422 (2021). https://doi.org/10.1007/s11707-020-0850-0
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DOI: https://doi.org/10.1007/s11707-020-0850-0