Natural gas acquiring device and method

A technology for obtaining devices and natural gas, which is applied in the fields of earth-moving drilling, production of fluids, wellbore/well components, etc., and can solve problems such as reducing the feasibility of natural gas hydrate development.

Inactive Publication Date: 2016-01-27
QINGDAO INST OF MARINE GEOLOGY
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  • Abstract
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  • Claims
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Problems solved by technology

However, this method requires a large amount of additional heat, which economically reduces the feasibility of gas hydrate development

Method used

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. 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.

[0025] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Please refer to the attached figure 1 And attached figure 2 , figure 1 Schematic diagram of the structure of the natural gas acquisition device provided by the present invention; figure 2...

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Abstract

The invention discloses a natural gas acquiring device comprising a casing and a gravity assisted heat pipe. The outer wall of the heat dissipation section of the casing and the outer wall of the heating section of the casing are provided with perforations. The upper part of the gravity assisted heat pipe is arranged inside the heat dissipation section of the casing. The lower part of the gravity assisted heat pipe is arranged inside the heating section of the casing. In this way, the heat is absorbed by the lower part of the gravity assisted heat pipe and then the absorbed heat is transferred to the gravity assisted heat pipe. After the upper part of the gravity assisted heat pipe is heated, the natural gas hydrate is heated to be decomposed into methane gas and liquid water. Along with the increasing of the content of the decomposed natural gas hydrate, the pressure inside a natural gas hydrate storage layer is increased. When the pressure is increased to a certain degree, the pressure is automatically ejected to the top of the casing. Therefore, the development of the natural gas hydrate is realized. The invention also discloses a natural gas acquiring method, wherein the bottom of the gravity assisted heat pipe is heated by means of a high temperature layer at the bottom of the natural gas hydrate storage layer. As a result, the potential risk of external contamination is eliminated and the development cost is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of natural gas acquisition, in particular to a natural gas acquisition device and method. Background technique [0002] Gas hydrate is widely distributed in deep sea sediments, and it is an ice-like crystalline substance formed by natural gas and water under high pressure and low temperature conditions. The methane content in natural gas hydrate accounts for 80% to 99.9%. Its combustion pollution is much smaller than that of coal, oil, natural gas and other fossil fuels, and its reserves are very rich. It is regarded by various countries as the most promising alternative energy source for oil and gas in the future. Therefore, the economical and effective development of natural gas hydrate resources is of great significance for alleviating my country's energy crisis, ensuring energy reserves, and controlling environmental pollution. The development of natural gas hydrate mainly includes pyrolysis method, dep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/01E21B43/24
CPCE21B41/0099
Inventor 孙治雷魏合龙孙致学徐杨孙强蔡明玉黄勇邓清张明明张现荣
Owner QINGDAO INST OF MARINE GEOLOGY
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