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公开(公告)号:US10267129B1
公开(公告)日:2019-04-23
申请号:US16058623
申请日:2018-08-08
发明人: Baojiang Sun , Ye Chen , Zhiyuan Wang , Litao Chen , Yonghai Gao , Jiafang Xu , Heen Zhang
摘要: The present invention relates to the field of marine hydrate reserve recovery technology, and discloses a homocentric squares-shaped well structure for marine hydrate reserve recovery utilizing geothermal heat and a method thereof. The present invention employs a homocentric squares-shaped well structure and utilizes heat-carrying fluid to transfer the energy in a geothermal reservoir to a hydrate reservoir to promote dissociation of natural gas hydrates. The homocentric squares-shaped well structure can realize cyclic utilization of the heat-carrying fluid while improving heat conduction efficiency, and has advantages including high recovery rate, low recovery cost, low energy loss, and high heat utilization efficiency, etc.
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公开(公告)号:US20210254438A1
公开(公告)日:2021-08-19
申请号:US16869166
申请日:2020-05-07
申请人: China University of Petroleum (East China) , Selskapet Gudme Stad AS , CIMC Offshore Engineering Research Institute Co. Ltd.
发明人: Baojiang Sun , Ove Tobias Gudmestad , Xuefeng Li , Dahui Liu , Litao Chen
IPC分类号: E21B41/00 , E21B43/30 , E21B43/24 , E21B43/38 , E21B17/01 , E21B43/12 , E21B43/08 , E21B34/06
摘要: The present invention relates to the field of natural gas production, and discloses a well structure for natural gas hydrate production, which comprises: a natural gas production well (12); an injection well (4) capable of extending into a geothermal reservoir and injecting a heat-carrying fluid; a high curvature connecting well (7), the inlet end of the high curvature connecting well (7) is connected to the outlet end of the injection well (4); a hydrate production horizontal well (10), which may be arranged in a shallow hydrate reservoir (9), the high curvature connecting well (7) and the hydrate production horizontal well (10) are connected by an ascending well section (8), and connected with the natural gas production well (12). With the above technical scheme, the high curvature connected well connecting the horizontal well and the vertical well can be located in the bottom layer below the hydrate reservoir, enhancing the stability and production efficiency of the gas hydrate production well.
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