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A Shale Gas Leaking Incident in Fuling Shale Gas Field in Chongqing, China: A Case Study

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  • Ye Zhang

    (National Joint Engineering Research Center for Shale Gas Exploration and Development, Chongqing Institute of Geology & Mineral Resources, Chongqing 401120, China
    Key Laboratory of Shale Gas Exploration, Ministry of Natural Resources, Chongqing Institute of Geology & Mineral Resources, Chongqing 401120, China)

  • Haijun Mao

    (State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
    Wuhan Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China)

  • Zhiping Zhang

    (National Joint Engineering Research Center for Shale Gas Exploration and Development, Chongqing Institute of Geology & Mineral Resources, Chongqing 401120, China
    Key Laboratory of Shale Gas Exploration, Ministry of Natural Resources, Chongqing Institute of Geology & Mineral Resources, Chongqing 401120, China)

  • Shu Jiang

    (Key Laboratory of Tectonics and Petroleum Resources, Ministry of Education, China University of Geosciences, Wuhan 430074, China)

  • Yiming Liu

    (School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China)

Abstract

A ground natural gas leaking event at the Fuling shale gas field is reported in this paper. Thirteen leakage spots were discovered in two places near the SW-1 and SW-2 drilling wells. The biggest leak rate was above 1000 m 3 per day, and no H 2 S was identified in any of the 13 leaking spots, according to the field study. The chemical components, carbon isotope properties of the leaking gases, and the geological context of the leaking location were researched in order to determine the reason for the leaking incident. From the geological conditions, the Shimen 1# fault belt cuts the whole strata from bottom to top, according to seismic reverse time migration (RTM), and the fault and leaking spots are located in the range of the surface projection of the horizontal section of the adjacent shale gas well. The fracture development evaluation shows that the Wufeng–Longmaxi Formation, which is also the producing layer of the Fuling shale gas field, has a very high possibility of fracture development. From the geochemical view, the carbon isotope of the leaking gases lies in the range of the Wufeng–Longmaxi Formation, showing that the Wufeng–Longmaxi Formation is the gas source of the leaking gas.

Suggested Citation

  • Ye Zhang & Haijun Mao & Zhiping Zhang & Shu Jiang & Yiming Liu, 2022. "A Shale Gas Leaking Incident in Fuling Shale Gas Field in Chongqing, China: A Case Study," Energies, MDPI, vol. 15(14), pages 1-11, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:14:p:5261-:d:867260
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    References listed on IDEAS

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    1. Robert Howarth & Renee Santoro & Anthony Ingraffea, 2012. "Venting and leaking of methane from shale gas development: response to Cathles et al," Climatic Change, Springer, vol. 113(2), pages 537-549, July.
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