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

Device and method of multi-channel transient electromagnetic method three-dimensional detection

A transient electromagnetic method and three-dimensional detection technology, which is used in measurement devices, electromagnetic/magnetic exploration, radio wave measurement systems, etc., can solve the problems of voltage signal attenuation, unfavorable fine detection, and difficulty in obtaining better quality signals. Achieve the effect of strong applicability and high data collection accuracy

Active Publication Date: 2016-09-07
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
View PDF8 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the above formula that with the increase of the offset r, the received voltage signal will attenuate sharply, and it is difficult to obtain a better quality signal when the offset is large
In addition, conventional methods are not conducive to fine detection in complex geological structures and terrain undulations.

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
  • Device and method of multi-channel transient electromagnetic method three-dimensional detection
  • Device and method of multi-channel transient electromagnetic method three-dimensional detection
  • Device and method of multi-channel transient electromagnetic method three-dimensional detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0072] When the transient electromagnetic work was carried out in a survey area, the ore body was buried at a depth of about 1000m, and it occurred in the Carboniferous Huanglong Formation-Chuanshan Formation. . The ore body spreads widely on the plane, but changes little in depth. The ore body is mainly composed of copper-bearing skarn, copper-bearing pyrite, copper-bearing serpentine, and copper-bearing pyrrhotite. The immediate surrounding rocks of the orebody chassis are rocks of the Gaolishan Formation of the lower Carboniferous system and quartz diorite, mainly hornfelized siltstone. The immediate topping rock of the ore body is the marble of the Huanglong Formation, and the upper part is the marble of the Qixia Formation. The structure of the ore body is simple, and the degree of research is relatively high. There is a good difference in electrical characteristics between the ore body and the surrounding rock. The ore body itself has good electrical conductivity, whi...

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

This invention provides a device and method of multi-channel transient electromagnetic method three-dimensional detection. The device comprises an emitting electrode pair and a distributed collection station which is arranged at a position with a first preset distance to the emitting electrode pair. The distributed collection station comprises multiple electrode pairs which are arranged on multiple measurement lines, and each of the measurement lines is provided with a receiving electrode pair or multiple receiving electrode pairs. The method comprises a step of carrying out equivalent conversion of the transient electromagnetic observation data obtained by the distributed collection station into ground virtual seismic field data, a step of obtaining the virtual seismic data of any point in a ground through the ground virtual seismic field data obtained through conversion, and a step of determining the boundary surface of a ground target body to a surrounding rock according to the seismic data of any point in the ground. The practicability is strong, the data collection precision is high, a fine interpretation cross section can be obtained, and the boundary surface of the ground target body and the surrounding rock is intepreted visually.

Description

technical field [0001] The invention relates to the fields of coalfield hydrogeology and geophysics, in particular to a device and method for three-dimensional detection by multi-channel transient electromagnetic method. Background technique [0002] The original idea of ​​MTEM (Multi-channel Transient Electromagnetic Method) is to estimate the distribution of underground natural gas reservoirs by extracting the difference between EM data acquired at different times at the same location. [0003] like figure 1 As shown in , it is a schematic diagram of the field layout of the device for the multi-channel transient electromagnetic method experiment. The "dot" on the figure indicates the position of each emitter pole in the test, and the "cross" indicates the position of the observation point. In the test, the system conducts array multi-component emission along the survey line, and array multi-field and multi-component observation. The transmitter transmits a bipolar squar...

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): G01V3/08G01V3/38
CPCG01V3/08G01V3/38
Inventor 底青云李貅薛国强侯东洋
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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