General Prospecting Institute of China National Administration of Coal Geology

Degao Zhang

Zhe Jiang

Xiao Zhang

Yan Ding

Sitong Song

Yinglin Fan

Yonghan Liu

Song Du

Qiaohui Che

Provided is a drilling method for a storage well for liquid-gas two-phase combined geological storage, including the following steps: drilling down from a ground to the bottom of a potable aquifer, and installing a first section wellbore; dividing a second section wellbore into multiple segments of second section sub-wellbores, arranging multiple first bases on an inner wall in advance, forming an vent hole in a sidewall of the second section sub-wellbore corresponding to a gas storage layer, and closing a bottom surface of the second section sub-wellbore at the bottom, with a drill-through hole at the center; drilling down to the bottom of the gas storage layer, and installing the second section wellbore; dividing a third section wellbore into multiple segments of third section sub-wellbores, and arranging multiple second bases on an outer wall in advance.

Drilling method for storage well for liquid-gas two-phase combined geological storage

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Beijing, China

Degao Zhang