China University of Petroleum

Selskapet Gudme Stad as

Cimc Offshore Engineering Research Institute Co. Ltd.

Dahui Liu

Baojiang Sun

Litao Chen

Ove Tobias Gudmestad

Xuefeng Li

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 (); an injection well () capable of extending into a geothermal reservoir and injecting a heat-carrying fluid; a curved connecting well (), the inlet end of the curved connecting well () is connected to the outlet end of the injection well (); a hydrate production horizontal well (), which may be arranged in a shallow hydrate reservoir (), the curved connecting well () and the hydrate production horizontal well () are connected by an ascending well section (). 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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Yantai, China

Dahui Liu