Frozen soil layer natural gas hydrate horizontal branch well pattern mining system and method
A technology of horizontal branch wells and mining methods, which is applied in the fields of fluid extraction, earth drilling, directional drilling, etc. It can solve the problems of aggravating the greenhouse effect, changes in global temperature, and degradation of permafrost, and achieves weakening the risk of environmental damage and reasonable design , production efficiency and economic benefit improvement effect
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[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0027] See Figure 1~3 , A horizontal branch well pattern mining system for natural gas hydrate in frozen soil, including main drilling 1, production area 2, production well 3, regional multilateral well 4, production area boundary 5, filling body 6, decomposition enhancement area 7, main Drilling horizontal section 8, main drilling vertical section 8', branch well 9, decomposition circle 11 and arch structure 12; the main well 1, region...
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