Combustible ice mining method

A mining method and technology in an operating area, applied in the field of combustible ice mining, can solve the problems of large failure risk and low mining efficiency of combustible ice, and achieve the effects of improving safety, reducing failure risk, and protecting geology

Pending Publication Date: 2022-03-22
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present application is to provide a method for mining combustible ice to solve the problems in the prior art that the mining efficiency of combustible ice is low and faces a greater risk of failure

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Embodiment Construction

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0030] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specify...

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Abstract

The invention provides a combustible ice mining method. The combustible ice mining method comprises the following steps of equipment laying, wherein a horizontal well, a temperature sensor and a pressure sensor are laid on the stratum where combustible ice of an operation area is located; exploiting operation: exploiting the combustible ice in the operation area by adopting a depressurization method, and monitoring the geological change of the stratum where the combustible ice is located in the operation area; when the mining operation reaches a set condition, stopping the mining operation; and repairing operation: injecting geological repairing gas into the stratum where the combustible ice of the operation area is located so as to recover the pressure of the stratum where the combustible ice of the operation area is located. According to the combustible ice mining method, combustible ice is mined through a depressurization method, the mining efficiency is improved, and the failure risk is reduced; a temperature sensor and a pressure sensor are laid on the stratum where the combustible ice is located, and the geological change of the stratum where the combustible ice is located in an operation area is monitored in the mining operation process, so that the state of the stratum where the combustible ice is located is temporarily controlled, mining operation is stopped in time, the geology is repaired, the geology is protected, and safety is improved.

Description

technical field [0001] The application belongs to the technical field of combustible ice mining, and more specifically relates to a combustible ice mining method. Background technique [0002] Natural gas hydrate is combustible ice, which is an ice-like crystalline substance formed by natural gas and water under high pressure and low temperature conditions. Natural gas hydrate has the characteristics of large occurrence, wide distribution, high energy density and clean combustion (combustion products are water and carbon dioxide). It is considered to be a promising alternative energy source in the 21st century, and its research and development have important strategic significance. . In recent years, various countries have successively carried out natural gas hydrate trial production projects. The main production methods include depressurization method, heat injection method, inhibitor injection method, carbon dioxide replacement method and solid fluidization method. Among...

Claims

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Application Information

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IPC IPC(8): E21B43/01E21B43/18E21B43/16E21B47/06E21B47/07E21B49/00
CPCE21B41/0099E21B43/18E21B43/164E21B43/168E21B47/06E21B47/07E21B49/00
Inventor 陈道毅牛梦雅吴国钟殷振元孙漪霏
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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