Geothermal system construction method, geothermal system and geothermal acquisition method

A geothermal and dry heat technology, applied in geothermal energy systems, geothermal energy, geothermal energy power generation, etc., can solve problems such as excessive temperature drop and reduced flow of heat medium

Pending Publication Date: 2021-02-26
ENN SCI & TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a method for constructing a geothermal system, which solves the problems of the heat medium flow rate decreasing and the temperature dropping too fast in the single well thermal cycle

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  • Geothermal system construction method, geothermal system and geothermal acquisition method
  • Geothermal system construction method, geothermal system and geothermal acquisition method
  • Geothermal system construction method, geothermal system and geothermal acquisition method

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] In describing the present invention, it is to be understood that the terms, "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer" etc. indicate orientation Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element...

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Abstract

The invention discloses a geothermal system construction method, a geothermal system and a geothermal acquisition method, relates to the technical field of geothermal exploitation, and aims to solve the problems that in single-well thermal circulation, the flow of a thermal medium is reduced, and the temperature is reduced too quickly. The geothermal system construction method comprises the stepsthat a well penetrating into a rock stratum is obtained; at least three layers of fractures are formed by fracturing the part, located in the rock stratum, of the well, wherein every two adjacent layers of fractures communicate with each other, and at least three layers of fractures comprise a bottom-layer fracture, a middle-layer fracture and a top-layer fracture; the part, close to the well wall, of the middle-layer fracture is blocked, and the middle-layer fracture is blocked by a preset length in the preset direction from the communication position of the middle-layer fracture and the well; a production pipe column is installed in the well, and an annulus is formed between the production pipe column and the well wall; and the annulus between the top-layer fracture and the bottom-layerfracture is packed, and the geothermal system is formed. The geothermal system construction method is used for constructing the geothermal system.

Description

technical field [0001] The invention relates to the technical field of geothermal exploitation, in particular to a method for constructing a geothermal system, a geothermal system and a geothermal acquisition method. Background technique [0002] Geothermal heat is a renewable form of thermal energy deep within the earth, arising from the decay of the earth's molten magma and radioactive materials. EGS (enhanced geothermal system or engineered geothermal system, enhanced geothermal system) is proposed on the basis of hot dry rock technology. It is a method of artificially forming geothermal reservoirs to economically extract deep thermal energy from low-permeability rock masses. artificial geothermal system. Geothermal systems usually consist of water injection wells, deep artificial fracture systems and production wells, and the heat produced can be used for power generation, heating, agricultural utilization, etc. The thermal cycle of the geothermal system is divided int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B43/30F24T50/00
CPCE21B43/261E21B43/30F24T50/00Y02E10/10
Inventor 刘舟波陈培培
Owner ENN SCI & TECH DEV
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