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

Ground natural potential data acquisition processing method based on minor cycle plane multipolar synchronous base point

A self-potential and small-cycle technology, applied in the field of geophysical exploration, can solve problems such as unguaranteed data quality, difficult drift control, and difficulty in distinguishing true and false natural potentials.

Active Publication Date: 2010-06-02
PETROCHINA CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Only observe along the direction of the survey line, without considering the base point problem and the rapid closure of the observation to suppress the change of the natural electric field and electrode range over time. In addition, only one value is randomly measured between each pair of electrodes, which is prone to random interference Impact
[0009] The above-mentioned observation methods often have poor observation repeatability, extremely poor drift is difficult to control, and the influence of time-varying changes is not recorded, and only the gradient along the survey line is observed. The data cannot be monitored in real time during data collection, and the quality of the data cannot be guaranteed.
In the end, it affected the processing and interpretation in the room, and made it difficult to distinguish the true from the false of the spontaneous potential abnormality

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
  • Ground natural potential data acquisition processing method based on minor cycle plane multipolar synchronous base point
  • Ground natural potential data acquisition processing method based on minor cycle plane multipolar synchronous base point
  • Ground natural potential data acquisition processing method based on minor cycle plane multipolar synchronous base point

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] Embodiment 1: The following is the data acquisition method of multi-pole synchronous base point data on the ground natural potential small cycle plane. The implementation steps are as follows:

[0110] (1) Choose to lay out a base point in a place where the terrain in the work area is flat and far away from industrial power grids, substations and other equipment. The base point electrode layout method adopts two electrodes, the deep layer electrode b2 and the shallow layer electrode b1, which are arranged longitudinally. The buried depth of the deep layer electrode is 130cm, and the buried depth of the shallow layer electrode is 30cm. During the daily construction period, an instrument automatically records the natural potential time series of the deep and shallow electrodes at the base point (synchronized with ordinary measuring points) U b2 (t i ), (i=1, n); U b1 (t i ), (i=1, n). Calculate the difference ΔU b (t i ) = U b1 (t i )-U b2 (t i ), (i=1, n).

...

Embodiment 2

[0148] Embodiment 2: The following is the data acquisition method of multi-pole synchronous base point data on the ground natural potential small cycle plane. The implementation steps are as follows:

[0149] (1) Choose to lay out a base point near the work area where the terrain is flat and away from industrial power grids, substations and other equipment. The base point electrode layout method adopts two electrodes, the deep layer electrode b2 and the shallow layer electrode b1, which are arranged longitudinally. The buried depth of the deep layer electrode is 130cm, and the buried depth of the shallow layer electrode is 30cm. During the daily construction period, an instrument automatically records the natural potential time series of the deep and shallow electrodes at the base point (synchronized with ordinary measuring points) U b2 (t i ), (i=1, n); U b1 (t i ), (i=1, n). Calculate the difference ΔU b (t i ) = U b1 (t i )-U b2 (t i ), (i=1, n).

[0150] (2) Di...

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 ground spontaneous potential data acquiring and processing method based on a small circulation plane multi-electrode synchronization base point. The method comprises the following steps that: a position which has smooth terrain and smaller human interference is selected near a work area to preset a base point, electrodes are arranged by a method that a deep-layer electrode and a shallow-layer electrode are longitudinally arranged; two adjacent measuring lines are divided into a plurality of sections according to the situation of the work area, a plurality of small cycles are formed at a certain section; general measuring point electrodes are arranged on a plane, each measuring point is provided with five electrodes; and a digital multi-channel observation instrument is utilized to synchronously observe a spontaneous potential time sequence of the five electrodes, a spontaneous potential time sequence of the base point is utilized to correct the spontaneous potential time sequences of general measuring points, five spontaneous potential values of each general measuring point can form gradients in three directions and obtain ten gradient values, thereby effectively reducing or partially eliminating the interference of various noises to obtain a reliable and steady spontaneous electric field.

Description

technical field [0001] The invention relates to a geophysical prospecting method, in particular to a method for collecting and processing ground natural potential data based on a multi-pole synchronous base point on a small cycle plane, and a data collecting and processing method capable of improving the precision and quality of ground natural potential exploration. Background technique [0002] Under natural conditions, there is no need to supply power to the ground, and a certain potential difference can usually be observed between two points on the ground, which indicates that there is a natural electric field underground, referred to as the natural electric field. It is a passive source electrical exploration method-spontaneous potential exploration that uses the natural potential generated by the electrochemical action of rocks and ores in the surrounding area to carry out prospecting, mapping, hydrogeological and oil and gas exploration problems. Because this method do...

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): G01V3/08
Inventor 杨辉张研文百红于辉胡庆辉
Owner PETROCHINA CO LTD
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