Combustible ice mining method

A mining method and gas recovery technology, applied in the field of combustible ice mining, can solve problems such as low mining efficiency, poor permeability of sediment layers, slow replacement rate, etc., and achieve the effects of avoiding geological collapse, improving repair effect, and improving repair efficiency

Active Publication Date: 2022-01-07
深圳市弘毅海洋智能装备有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, this method has been proved to be feasible in terms of thermodynamics and kinetics, but the replacement rate of carbon dioxide-CH4 in carbon dioxide replacement production is slow, and the poor permeability in the sedimentary layer leads to low production efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Combustible ice mining method
  • Combustible ice mining method
  • Combustible ice mining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention 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 invention, not to limit the present invention.

[0031] It should also be noted that the orientation terms such as left, right, up and down in the embodiments of the present invention are only relative concepts or refer to the normal use state of the product, and should not be regarded as restrictive .

[0032] Please refer to Figure 1 to Figure 3 , The invention provides a combustible ice mining method, comprising the following steps: block division, pipeline laying, mining operation and repair operation.

[0033] Block division: explore the geological conditions and define the mining range according to the geological conditions, and divide t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention is applicable to the technical field of combustible ice mining, and provides a method for mining combustible ice, including: dividing blocks, exploring geological conditions and defining the mining range, and dividing the mining range into multiple operation areas, wherein each operation The area can ensure that no collapse occurs during the mining process; pipeline laying, gas production pipelines, gas transmission pipelines, gas production branch pipes and gas transmission main pipes are laid in the operation area, and the gas production branch pipes and the gas transmission branch pipes are arranged at intervals ; mining operations, decompose combustible ice by reducing pressure and / or increasing temperature, and transport the decomposed methane gas to the storage device; repair operations, inject carbon dioxide into the operation area at high pressure from the gas transmission device, and the carbon dioxide is in the The operation area diffuses and generates carbon dioxide hydrate; the cycle operation completes the mining operation and repair operation of each operation area in sequence. The combustible ice mining method provided by the invention improves the mining efficiency of the combustible ice and simultaneously realizes high-efficiency carbon fixation and restoration of geological layers.

Description

technical field [0001] The invention belongs to the technical field of combustible ice mining, in particular to a method for mining combustible ice. Background technique [0002] Natural gas hydrate (NGH) is also known as combustible ice. In my country, combustible ice mainly exists in the seabed sediments of the South China Sea. At present, only the depressurization method for combustible ice mining has obtained a certain degree of industrial verification. The molecular structure of combustible ice changes during mining, from solid to gas, which changes the mechanical properties of seabed sediments, resulting in weak areas in the bottom layer due to excessive weight loads, which in turn triggers large-scale hydrate landslides and eventually drives The rock layer flows or collapses, which in turn will cause geological disasters, such as sea level rise or tsunami, so safety is one of the important issues to be faced in the commercial exploitation of hydrates [0003] Carbon ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/01E21B43/16
CPCE21B43/01E21B43/164Y02P90/70
Inventor 陈道毅
Owner 深圳市弘毅海洋智能装备有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap