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Method for monitoring natural earthquake

A natural and seismic wave technology, applied in the field of seismic exploration data acquisition, can solve the problems of lack of real-time acquisition site, applicability and high efficiency, and the inability to predict the intensity of earthquakes, etc., to achieve the effect of real-time guidance and guarantee of acquisition operations

Inactive Publication Date: 2011-09-14
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the restriction of observation methods and observation parameters, the above-mentioned patents can only carry out preventive protection for engineering facilities, while geophysical field acquisition is carried out in a wider area and carried out in stages. warning signal, and cannot predict the intensity of an earthquake that will occur
Therefore, this patented technology lacks the real-time performance, applicability and efficiency of the acquisition site, and is not applicable in the field of geophysical prospecting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for monitoring natural earthquakes, comprising the steps of:

[0022] a. At the field acquisition site of seismic exploration, a plurality of geophones connected with seismic instruments are arranged, and the seismic instruments continuously record the seismic waves generated by natural earthquakes received by the geophones;

[0023] b. Identify seismic waves generated by natural earthquakes in background records;

[0024] c. Classifying the identified seismic wave energy by dB range to obtain monitoring results.

[0025] In the step a, a detection line is firstly measured, and the geophones are embedded at the measurement marks of the detection line according to the measured track spacing, and multiple geophones are connected with the seismic instruments through optical / cables, and the seismic instruments continuously Records the seismic waves generated by natural earthquakes received by the geophones.

[0026] In the b step, the background record refers to ...

Embodiment 2

[0030] At the field acquisition site of seismic exploration, by laying out a section of the detection line, seismic instruments are used to record the seismic waves generated by natural earthquakes. The seismic waves generated by natural earthquakes have the characteristics of linear, low-frequency, linear and low-frequency mixed, etc., in the background Seismic waves generated by natural earthquakes are identified in the record. Natural earthquakes can be divided into four levels of "red, yellow, yellow-white, and white" according to their intensity, and the corresponding color scales can be defined. The color scales of each level correspond to the different dB ranges of the monitoring gain of the seismic instrument screen. The monitoring gain of the seismic instrument screen is 66dB, and the colors displayed on the screen are observed and recorded. It is not sure whether there are weak aftershocks in the "green" color of the screen display, and the AGC gain of the screen dis...

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PUM

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Abstract

The invention discloses a method for monitoring natural earthquake, comprising the following steps: arranging a plurality of wave detectors connected with an earthquake instrument on the earthquake prospecting field acquisition scene, continuously recording the earthquake wave which is received by the wave detector and generated by the natural earthquake by using the earthquake instrument; identifying the earthquake wave generated by the natural earthquake from the background record; classifying the identified earthquake wave energy according to the dB range to obtain the monitoring result. The invention monitors the earthquake wave generated by the natural earthquake, identifies the earthquake wave generated by the natural earthquake and quantitatively determines the strength of the natural earthquake by using the quiet period between the continuous natural earthquakes in the natural earthquake frequent period; the natural earthquake monitor on the earthquake prospecting field acquisition scene forecasts the quiet period between the continuous natural earthquakes so as to perform the earthquake prospecting field acquisition in the quiet period of the aftershock.

Description

technical field [0001] The invention relates to a method for monitoring natural earthquakes, which is mainly applicable to the monitoring of natural earthquakes and belongs to the technical field of seismic exploration data collection. Background technique [0002] At present, there is no technology for detecting natural earthquakes in the geophysical prospecting field. In other fields, Patent No. "86107762" discloses the prediction and observation of natural and artificially induced seismicity and the preventive protection method for engineering facilities. Its application date is November 14, 1986, and its publication date is December 1987. On January 2, it simultaneously and continuously measured geophysical, physical, geochemical, geodesic, biological and microbiological parameters at least two deep (height) degrees on the ground, underground and above the ground, at least one of which was measured underground, and these The parameters and their changes over time are tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/00
Inventor 司阳涛文中平文向东刘伟杨智超魏文阁张毅周晓冀
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD