Geothermal closed-loop working medium circulation mining method
A technology of working medium circulation and mining method, which is applied in the fields of mining fluid, geothermal power generation, drilling equipment and methods, etc., can solve problems such as difficulty in realizing long-term continuous mining
Active Publication Date: 2022-03-18
北京派创石油技术服务有限公司
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[0006] The main purpose of the present invention is to provide a geothermal closed-loop working fluid circulation mining method to solve the problem in the related art that it is difficult to achieve long-term continuous mining in deep-layer high-temperature geothermal mining
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[0026]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. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0027] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include ...
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The invention provides a geothermal closed-loop working medium circulation mining method. The geothermal closed-loop working medium circulation mining method comprises the steps that S10, geological analysis is carried out, and well position selection is carried out; s20, a drilling scheme is determined according to the geological analysis and the selection result of the well position; s30, drilling is conducted according to the drilling scheme to obtain an injection well and a heat recovery well; s40, well drilling is conducted from the bottom of the injection well towards the heat recovery well through a first well drilling tool, well drilling is conducted from the bottom of the heat recovery well towards the injection well through a second well drilling tool, and therefore a directional communication well communicating the injection well with the heat recovery well is obtained; s60, the coiled tubing penetrates into the directional communication well from the injection well and penetrates out of the heat recovery well; and S70, a heat exchange working medium is poured into the continuous oil pipe. According to the technical scheme, the problem that long-term continuous exploitation of deep high-temperature terrestrial heat exploitation in related technologies is difficult to realize is effectively solved.
Description
technical field [0001] The invention relates to the technical field of geothermal mining, in particular to a geothermal closed-loop working fluid circulation mining method. Background technique [0002] The discovery of geothermal resources is usually carried out by means of geophysical prospecting technology, general survey of geothermal and heat flow measurement, gravity, magnetic method, electrical method and other methods to measure the surface and shallow surface strata, so as to find out the changing area and distribution of geothermal anomalies. Conductivity analysis of deep formations, the equivalent resistance map of the resistivity change area in the area, find out the minimum range of resistivity in the area, and at the same time, comprehensively evaluate all geological anomalies in the exploration area according to other geophysical exploration methods , to analyze the lithology, spatial distribution, porosity, permeability of possible geothermal energy reservoir...
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Login to View More IPC IPC(8): E21B7/00E21B43/30E21B21/00F24T10/20
CPCE21B7/00E21B43/30E21B43/305E21B21/00F24T10/20Y02E10/10
Inventor 李东奇付燕
Owner 北京派创石油技术服务有限公司