Natural gas hydrate depressurization exploitation well and natural gas hydrate depressurization exploitation method

• Main Authors: BI WENXIN, CHANG LONG, KEIJO, WANG HAIGE, ZHANG FUCHENG, GE YUNHUA, YU JING, ZHUO LUBIN, CUI LONGLIAN, LIU LI
• Format: Patent
• Language: Chinese; English
• Published: 08.07.2022
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention provides a natural gas hydrate depressurization exploiting well and a natural gas hydrate depressurization exploiting method, and the natural gas hydrate depressurization exploiting well comprises a gas exploiting well which is provided with a gas exploiting vertical section, a first gas exploiting deflecting section and a first gas exploiting horizontal section; the first drainage well is provided with a first drainage vertical section, a first drainage upper deflecting section, a first drainage upper horizontal section, a first drainage lower deflecting section and a first drainage lower horizontal section, the first drainage upper horizontal section and the first drainage lower horizontal section both extend towards the gas recovery well, and the first gas recovery horizontal section extends towards the first drainage well; the first drainage upper horizontal section is located above the first gas production horizontal section, and the first drainage lower horizontal section is located below