Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Continental margin hydrate environment geology dynamic monitoring system and method

A dynamic monitoring and hydrate technology, used in surveying, earth-moving drilling, and fluid extraction

Active Publication Date: 2020-06-05
QINGDAO INST OF MARINE GEOLOGY
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of the existing technology that it is difficult to accurately evaluate the environmental risks in the process of gas hydrate resource exploration and development, the present invention proposes a dynamic monitoring system and method for hydrate environment and geology at the continental margin, and conducts monitoring for slopes where natural gas hydrates occur at the continental margin. Comprehensive monitoring of landslides and environmental changes, so as to grasp the mechanism and law of geological disasters that may be induced by hydrates, and provide technical support for the hydrate mining process

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
  • Continental margin hydrate environment geology dynamic monitoring system and method
  • Continental margin hydrate environment geology dynamic monitoring system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1, a kind of continental margin hydrate environmental geological dynamic monitoring system, such as figure 1 As shown, 1 is a hydrate reservoir, because its shallow part is affected by bottom water temperature and tidal fluctuations, earthquakes and self-weight, it often decomposes, and a weak layer in the formation, that is, a potential landslide line 2, has the potential to occur The risk of landslides, in order to monitor the deep deformation and trend development of potential landslides, is mainly based on the following technologies:

[0029]The monitoring system includes an inclinometer unit, a free methane monitoring unit, a seawater environment parameter monitoring unit, a data acquisition unit 10 and an in-situ data receiving unit; the inclinometer unit and the free methane monitoring unit are arranged along the landslide line 2, and the inclinometer unit It is used to monitor the deep deformation degree of the landslide body, to use the deformation m...

Embodiment 2

[0036] Embodiment 2. Based on the dynamic monitoring system for environmental geology of hydrates at the continental margin disclosed in Embodiment 1, this embodiment proposes a corresponding monitoring method, which includes the following steps:

[0037] (1) Determine the landslide line according to the location of the survey target. In the actual investigation, use the special structure (landslide step 17) on the seabed micro-topography and combine the fractures interpreted on the shallow strata section to determine the actual landslide line. Location;

[0038] (2) vertically drill a hole on the landslide mass of the investigation target position, the bottom of the borehole passes through the landslide line, and lay an inclinometer unit for monitoring the deep deformation degree of the landslide mass in the borehole;

[0039] During specific implementation, the appropriate position where the landslide step 17 occurs on the landslide body is drilled vertically, and the lower ...

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 invention discloses a continental margin hydrate environment geology dynamic monitoring system and method. The method comprises the steps of monitoring the dissolved methane flux, the dissolved oxygen content, the pH value, the Eh value and other parameters of a leakage source in a water body on the basis of a seabed multi-parameter sensor technology; monitoring the free methane flux leaked ina bubble plume mode by combining an ultrasonic flowmeter; based on a distributed optical fiber technology, monitoring the stress and strain of a potential unstable slope, so that comprehensive monitoring of landslide and environmental changes for the slope with natural gas hydrate existing on a continental margin is achieved; and through the establishment of a small-scale submarine observation network, unified power supply and data acquisition, monitoring the dynamic activity of a hydrate reservoir and the resulting environmental effects, so that the in-situ, long-term and continuous monitoring and early warning capabilities are formed, the mechanism and rules of geological hazards possibly induced by hydrates are mastered, technical support is provided for the hydrate exploitation process, the practical value is high and implementability is high.

Description

technical field [0001] The invention belongs to the technical field of marine natural gas hydrate environmental effect evaluation engineering, and in particular relates to a dynamic monitoring system and method for environmental geological disasters caused by continental margin hydrates. Background technique [0002] Natural gas hydrates (hereinafter referred to as "hydrates") are widely distributed in the seabed of the world, accounting for more than 10% of the entire ocean area, and the continental margin is the most abundant location of hydrates. There is already established evidence that ongoing anthropogenic or natural processes can cause hydrate dissociation, triggering submarine slides at many points along the continental margin. [0003] The mechanism by which hydrates contribute to submarine landslides is that if exposed to lower pressure and / or higher temperature conditions, hydrates dissociate, which can lead to disturbance of less compacted sediments and trigger ...

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
IPC IPC(8): E21B43/01E21B49/00E21B47/00E21B47/022
CPCE21B43/01E21B47/022E21B49/001
Inventor 孙治雷张喜林耿威翟滨曹红张现荣徐翠玲王利波闫大伟李鑫
Owner QINGDAO INST OF MARINE GEOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com