Enhanced geothermal system construction method and device based on magnetic guidance

Abstract

The invention provides an enhanced geothermal system construction method and device based on magnetic guidance. The enhanced geothermal system construction method comprises the steps that after an injection well is drilled and an artificial thermal storage crack is formed, a magnetic proppant is controlled to be injected into the artificial thermal storage crack; a geomagnetic field signal affected by the magnetic proppant is obtained; the well drilling trajectory of a production well is determined according to the geomagnetic field signal; and well drilling operation of the production well iscontrolled to be completed according to the well drilling trajectory of the production well. According to the enhanced geothermal system construction method and device based on magnetic guidance, thethermal storage crack position of hot dry rock is positioned through magnetic guidance, thus the problem that a crack and a production well cannot communicate accurately in the construction process of an enhanced geothermal system can be effectively solved, and the off-target risk and cost of the production well are reduced to a great extent.

Description

technical field [0001] The invention relates to the technical field of geothermal resource development, in particular to a method and device for constructing an enhanced geothermal system based on magnetic guidance. Background technique [0002] At present, my country's energy consumption structure is dominated by fossil energy, which brings about increasingly severe environmental and climate problems. As an important renewable and clean energy, geothermal energy has the advantages of low-carbon environmental protection, good stability, and recyclability. A clean and renewable new energy, in line with the major strategic needs of my country's energy development. my country has abundant reserves of geothermal resources and great potential for development and utilization. Promoting the efficient development of hot dry rock geothermal resources in my country is of great significance for promoting energy conservation and emission reduction, improving the environment and improvi...

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Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for constructing an enhanced geothermal system based on magnetic guidance. Using magnetic guidance to locate the cracks in the hot dry rock storage can effectively solve the problem that the fractures and production wells cannot be accurately connected during the construction of the enhanced geothermal system. problems, greatly reducing the off-target risk and cost of production wells

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