CN108873077A - A kind of new natural electric field exploitation method - Google Patents
A kind of new natural electric field exploitation method Download PDFInfo
- Publication number
- CN108873077A CN108873077A CN201810881101.2A CN201810881101A CN108873077A CN 108873077 A CN108873077 A CN 108873077A CN 201810881101 A CN201810881101 A CN 201810881101A CN 108873077 A CN108873077 A CN 108873077A
- Authority
- CN
- China
- Prior art keywords
- electric field
- natural electric
- point
- natural
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/081—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the magnetic field is produced by the objects or geological structures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/38—Processing data, e.g. for analysis, for interpretation, for correction
Abstract
A kind of new natural electric field exploitation method.This method using a measurement natural electric field equipment according to certain time interval acquire known to some particle natural electric field signal, it is corrected according to natural electric field data of the time parameter of natural electric field to other measuring points, to reject the random variation and interference of natural electric field signal, the entire natural electric field quality of data surveyed in area is improved, exploration effects are improved.
Description
Technical field
The present invention relates to a kind of new natural electric fields of the raising natural electric field exploration effects in Key words exploration geophysics field to survey
Spy method.
Background technique
There is a kind of frequency selection method that geological prospecting is carried out using measurement natural electric field in electrical prospecting.This method uses two
The measuring electrode of ground connection directly measures the electric field signal intensity of the natural electric field different frequency of the earth, without measuring the day of the earth
Right magnetic field, without arrangement artificial electric field, therefore the working efficiency of this method is higher, exploration cost is low, anti-human message magnetic disturbance energy
Power is strong, has obvious advantage in geological prospecting.But the driving source of the natural electric field signal due to forming the earth is not
Be it is stable, not only the signal strength of the driving source of different frequency is different, even the signal strength of the driving source of identical frequency
Also it can vary over, therefore the natural electric field signal strength of the identical frequency of different moments acquisition is different；Separately due to people
Literary electric jamming changes also with the time；If the natural electric field data obtained to different moments are directly interpreted, can
Since the excitation source signal intensity of different moments is different with humane electric jamming, the natural electric field data for causing different moments to obtain
Comparativity reduces, to influence the exploration effects of this method.This is also frequency selection method at present more as qualitative exploration early period
Main cause.
Based on the above problem present in current natural electric field, to improve the exploration effects of this method, therefore propose that one kind mentions
The electrical prospecting method of high natural electric field exploration effects.
Summary of the invention：
The purpose of the present invention is the natural electric field signal comparativity based on different moments present in existing frequency selection method is low, exploration
The problems such as effect is poor proposes a kind of new natural electric field exploitation method, reduces different moments due to the driving source of natural electric field
Signal and the changed influence of humane electric field, to improve the surveying accuracy and effect of natural electric field.
A kind of new natural electric field exploitation method, specific step is as follows：
A) measurement is laid naturally in the known point that choice of prospective area for exploration geological condition is of substantially known, humane electric jamming is small
The electrical method equipment of electric field, according to the natural electric field signal U of fixed time interval measurement some period of known point0(t) and remember
At the acquisition moment of record measurement natural electric field, form the natural electric field signal time sequence data of known point；The selection of known point can
To combine the achievement of the geology etc. of early period to be selected, selection geological condition is simple as far as possible, stratum is stable, interference is small ground
The electrical method equipment of point arrangement known point；The time interval of measurement can according to the storage size of instrument, field measuring point it is how many,
Surveying accuracy requirement etc. is selected；Record the measuring electrode MN distance of electrical method equipment；For the natural electric field letter for improving known point
Number stability, using unpolarizable electrode as measuring electrode；Survey can be set in the electrical method equipment of the measurement natural electric field of known point
Measure the total field signal of natural electric field or natural electric field frequency domain signal；The work ginseng of the electrical method equipment of the measurement natural electric field of known point
Number is identical as the measurement electrical method equipment of natural electric field of measuring point, but the time interval of data acquisition can be different；The survey of known point
The time of measuring range of the measurement natural electric field of measuring point is completely covered in the time of measuring range of amount natural electric field.
B) the natural electricity of measuring point in exploration area is measured using the electrical method equipment of other measurement natural electric fields in exploration area
Field data Un(t) and record acquires the moment, and wherein n is natural number, represents the number of different measuring points；More or one can be used
Measure the natural electric field data of all measuring points in the electrical method device measuring exploration area of natural electric field；To improve exploration effects, to institute
There is the electrical method equipment of measurement natural electric field to carry out coherence measurement, obtains the System level gray correlation between distinct device；Measurement on measuring point
The electrical method equipment of natural electric field improves working efficiency as measuring electrode using copper electrode to reduce field work difficulty；It surveys
The running parameter of the electrical method equipment of the natural electric field of the running parameter and known point of the electrical method equipment of the measurement natural electric field of point is complete
It is exactly the same；When the time of measuring range of the measurement natural electric field of measuring point is completely contained in the measurement of measurement natural electric field of known point
Between within the scope of.
C) to the natural electric field signal time sequence data U of step a) known point collected0(t), using interpolation method
Interpolation, the time series data U of the natural electric field signal after obtaining the interpolation of known point are carried out to time series dataC(t)；Number
According to the methods of the preferable Quadratic Spline Interpolation of interpolation method, Lagrange's interpolation；Result after interpolation is not to change primitive curve
Subject to general morphology.
D) moment is acquired according to the natural electric field data of measuring point in step b), after the interpolation of the known point obtained from step c)
Natural electric field signal time series data UC(t) it selects in and is acquired with the natural electric field data of corresponding measuring point in step b)
Moment TnThe mutually natural electric field signal U after the interpolation of known point in the same timeC(Tn), the acquisition moment T that step b) is obtainedn's
The natural electric field data U of measuring pointn(Tn) use Fn=Un(Tn)/UC(Tn) formula calculated, obtain the F of corresponding measuring pointnData；
If there are System level gray correlations for the electrical method equipment of difference measurement natural electric field, to FnData carry out System level gray correlation correction, reject different instruments
Between systematic error, further increase exploration effects；The F of all measuring points handled in the above mannernData eliminate by
The data variation caused by different, humane electric jamming difference of excitation source signal intensity of different moments natural electric field etc., and increase
The comparativity for having added the natural electric field data of measuring point in entire survey area, to improve exploration effects and surveying accuracy.
E) the known geological condition for combining known point, to the F of corresponding measuring pointnData are carried out into map analysis and interpretation, judgement
The geological condition of corresponding measuring point；Geological layering, the electrical property feature etc. of known point are obtained, and otherwise achievement is combined to draw ground
Electric section；The geological informations such as the geoelectric cross section according to known point, in conjunction with the F of all measuring pointsnData divide the geology of all measuring points
Layering, geological anomalous body etc..
The natural electric field signal and data obtained on known point and measuring point in above step is according to the measurement of respective point
Electrode MN distance carries out range normalization processing, to reduce the signal due to caused by the measuring electrode length difference of different measuring points
Difference also can be the measuring electrode for more meeting field condition in field work according to the actual conditions of different measuring points arrangement, reduce
Field work difficulty enhances the field adaptability and flexibility ratio of this method.
Detailed description of the invention：
Fig. 1 is the new natural electric field exploitation method flow chart of one kind of the invention；
Fig. 2 is existing natural electric field common exploration method flow chart；
Fig. 3 is the new natural electric field exploitation method field arrangement schematic diagram of one kind of the invention.
A is known point known to geological condition in Fig. 3, and 1~36 is the number of 36 measuring points, and solid cruciform symbol indicates
The position of known point, solid dot symbol indicate the position of measuring point.
Specific embodiment：
Referring to Fig. 1, Fig. 2, Fig. 3 combination specific embodiment, the present invention will be further described.
As shown in figure 3, needing to carry out 36 measuring points in the exploration area in Fig. 3 new method proposed by the invention carries out day
Right electric field exploration, specific step is as follows：
1) the electrical method equipment for selecting two measurement natural electric fields, first carries out the uniformity test of two electrical method equipment, two
The System level gray correlation of platform instrument controls the System level gray correlation in error range or obtaining two instruments, using a wherein electrical instrument as base
Standard carries out system compensation to another measurement result.
2) one is laid in the known point A that choice of prospective area for exploration geological condition is of substantially known, humane electric jamming is small pass through two
The electrical method equipment of a measuring electrode measurement natural electric field resultant field；For the natural electric field signal stabilization for improving known point, it is known that point A
On the measuring electrode that uses using unpolarizable electrode, and measuring electrode MN distance is 20 meters；When according to measuring primary per minute
Between be spaced, measure known point A natural electric field signal U0(t) and and the acquisition moment for measuring natural electric field every time, formation are recorded
The natural electric field signal time sequence data of known point A.
3) 36 measuring points that number 1~36 is arranged in exploration area, when the electrical method equipment on known point A starts acquisition naturally
After electric field data, then using the electrical method equipment of another measurement natural electric field resultant field, pass through the measuring electrode of each point layout
MN acquires the natural electric field data acquisition of each measuring point, and the MN distance for being provided with each measuring point is 20 meters；Record 36
The natural electric field data U of measuring pointi(ti) (i=1,2,3..., 36), wherein ti(i=1,2,3..., 36)) it is that each measuring point acquires
At the time of when natural electric field data；The electrical method equipment of measurement natural electric field on each measuring point is using copper electrode as measurement electricity
Pole, it is possible to reduce field work difficulty improves working efficiency；Measuring point measurement natural electric field electrical method equipment instrument parameter with
The instrument parameter of the electrical method equipment of the natural electric field of known point A is identical, but the time interval of two electrical method devices collect datas can
With difference；After the natural electric field data acquisition of 36 measuring points of this exploration area, then stop the natural electric field number of known point A
According to collecting work.
4) the natural electric field signal time sequence data U of known point A collected to step 2)0(t), using quadratic spline
Interpolation method carries out interpolation to time series data, the time series number of the natural electric field signal after obtaining the interpolation of known point A
According to UC(t)。
5) moment t is acquired according to the natural electric field data of 36 measuring points in step 3)i(i=1,2,3..., 36)), from step
The time series data U of natural electric field signal after the interpolation of the rapid known point A 4) obtainedC(t) it selects and phase in step 3)
The natural electric field data of measuring point are answered to acquire moment ti(i=1,2,3..., 36)) the mutually day after the interpolation of known point A in the same time
Right electric field signal UC(ti), the acquisition moment t that step 3) is obtainedi(i=1,2,3..., 36)) corresponding to measuring point natural electricity
Field data Ui(ti) (i=1,2,3..., 36) use Fi=Ui(ti)/UC(ti) formula calculated, obtain the F of corresponding measuring pointiNumber
According to；If there are System level gray correlations for the electrical method equipment of difference measurement natural electric field, to FiData carry out System level gray correlation correction, reject different instrument
Systematic error between device, further increases exploration effects；；The F of all measuring points handled in the above mannernData eliminate
The data variation due to caused by different, humane electric jamming difference of the excitation source signal intensity of different moments natural electric field etc., and
The entire comparativity for surveying the natural electric field data of measuring point in area is increased, to improve exploration effects and surveying accuracy.
6) the known geological condition for combining known point, to the F of corresponding measuring pointiData are carried out into map analysis and interpretation, judgement
The geological condition of corresponding measuring point；Geological layering, the electrical property feature etc. of known point are obtained, and otherwise achievement is combined to draw ground
Electric section；The geological informations such as the geoelectric cross section according to known point, in conjunction with the F of all measuring pointsiData divide the geology of all measuring points
Layering, geological anomalous body etc..
The natural electric field signal and data obtained on known point A and 1~36 measuring point in above step is according to corresponding
The measuring electrode MN distance of point carries out range normalization processing, due to the survey on known point A in present embodiment and 36 measuring points
Electrode MN is measured apart from identical, therefore is only considered from this exploration area, then range normalization processing can not be carried out to electric field data；If needing
The data to survey areas with other compare and analyze, then or guarantee the measuring electrode MN of each point apart from identical or press
Range normalization processing is carried out according to measuring electrode MN distance.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should be included in the present invention.
Claims (2)
1. a kind of new natural electric field exploitation method, specific step is as follows：
A) a measurement natural electric field is laid in the known point that choice of prospective area for exploration geological condition is of substantially known, humane electric jamming is small
Electrical method equipment, according to fixed time interval measurement some period of known point natural electric field signal and record every time survey
At the acquisition moment for measuring natural electric field, form the natural electric field signal time sequence data U of known point0(t)；
B) the natural electric field number of measuring point in exploration area is measured using the electrical method equipment of other measurement natural electric fields in exploration area
According to Un(t) and record acquires moment Tn, wherein n is natural number, represents the number of different measuring points；
C) to the natural electric field signal time sequence data U of step a) known point collected0(t), using interpolation method to the time
Sequence data carries out interpolation, the time series data U of the natural electric field signal after obtaining the interpolation of known pointC(t)；
D) moment T is acquired according to the natural electric field data of measuring point in step b)n, wherein n is natural number, represents the volume of different measuring points
Number；The time series data U of natural electric field signal after the interpolation of the known point obtained from step c)C(t) it selects and walks in
It is rapid b) in corresponding measuring point natural electric field data acquire moment TnThe mutually natural electric field signal U after the interpolation of known point in the same timeC
(Tn), the acquisition moment T that step b) is obtainednMeasuring point natural electric field data Un(Tn) use Fn=Un(Tn)/UC(Tn) formula
It is calculated, obtains the F of corresponding measuring pointnData；
E) the known geological condition for combining known point, to the F of corresponding measuring pointnData carry out judging corresponding survey at map analysis and interpretation
The geological condition of point.
2. a kind of new natural electric field exploitation method as described in claim 1, it is characterised in that：It is obtained on known point and measuring point
Natural electric field signal and data carry out range normalization processing according to the measuring electrode MN distance of respective point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810881101.2A CN108873077A (en) | 2018-08-04 | 2018-08-04 | A kind of new natural electric field exploitation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810881101.2A CN108873077A (en) | 2018-08-04 | 2018-08-04 | A kind of new natural electric field exploitation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108873077A true CN108873077A (en) | 2018-11-23 |
Family
ID=64307789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810881101.2A Pending CN108873077A (en) | 2018-08-04 | 2018-08-04 | A kind of new natural electric field exploitation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108873077A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018521A (en) * | 2019-05-17 | 2019-07-16 | 中南大学 | A kind of natural electric field diurnal correction method |
| CN110703346A (en) * | 2019-11-14 | 2020-01-17 | 张道清 | Same-frequency and same-source ratio measurement method for natural electric field |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3136943A (en) * | 1956-04-30 | 1964-06-09 | New Jersey Zinc Co | Geophysical prospecting method utilizing the electric field component of the earth's natural transient electromagnetic fields |
| CN1945358A (en) * | 2006-10-19 | 2007-04-11 | 张东来 | High precision measuring method for deep resource based on natural electric field idealization and detecting instrument |
| CN105911603A (en) * | 2016-05-04 | 2016-08-31 | 湖南科技大学 | Natural electric field based four-dimensional geophysical prospecting method |
-
2018
- 2018-08-04 CN CN201810881101.2A patent/CN108873077A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3136943A (en) * | 1956-04-30 | 1964-06-09 | New Jersey Zinc Co | Geophysical prospecting method utilizing the electric field component of the earth's natural transient electromagnetic fields |
| CN1945358A (en) * | 2006-10-19 | 2007-04-11 | 张东来 | High precision measuring method for deep resource based on natural electric field idealization and detecting instrument |
| CN105911603A (en) * | 2016-05-04 | 2016-08-31 | 湖南科技大学 | Natural electric field based four-dimensional geophysical prospecting method |
Non-Patent Citations (2)
| Title |
|---|
| 刘国辉: "声频大地电场法中的两种资料处理方法", 《河北地质学院学报》 * |
| 张辉等: "天然电磁场日变规律实验观测", 《四川理工学院学报(自然科学版)》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018521A (en) * | 2019-05-17 | 2019-07-16 | 中南大学 | A kind of natural electric field diurnal correction method |
| CN110703346A (en) * | 2019-11-14 | 2020-01-17 | 张道清 | Same-frequency and same-source ratio measurement method for natural electric field |
| CN110703346B (en) * | 2019-11-14 | 2021-06-11 | 张道清 | Same-frequency and same-source ratio measurement method for natural electric field |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8030934B2 (en) | Method for hydrocarbon reservoir mapping and apparatus for use when performing the method | |
| CN101382070B (en) | Electromagnetical method for dynamically monitoring oil reservoir injection-production | |
| US20040232917A1 (en) | Detection of subsurface resistivity contrasts with application to location of fluids | |
| CN103869371A (en) | Manual field source frequency domain full-gradient electromagnetic measuring method | |
| CN111812724B (en) | Hidden karst pipeline detection method and system | |
| Chalikakis et al. | MRS applicability for a study of glacial sedimentary aquifers in Central Jutland, Denmark | |
| CN106896415A (en) | A kind of short offset distance transient electromagnetic detecting method of ground well grounded source | |
| CN103995301A (en) | Method and device for evaluating total organic carbon content in shale gas reservoir | |
| CN109782360A (en) | A kind of low-resistance area of coverage deep sand body detection method | |
| CN206378448U (en) | Polluted Soil detection arrangement of measuring-line structure based on comprehensive geophysical prospecting methods | |
| CN108761540B (en) | A kind of frequency domain natural electric field three-dimensional exploitation method | |
| CN108957560A (en) | A kind of electrical prospecting method suitable for the detection of the cities and towns underground space | |
| CN110187394A (en) | Double field source electromagnetic depth methods obtain the anisotropic method and device of formation resistivity | |
| CN108873077A (en) | A kind of new natural electric field exploitation method | |
| JP2939334B2 (en) | Sub-audio low-frequency magnetometer | |
| CN108732630B (en) | A kind of sharp electric surface sweeping method that 4 supply terminals are powered simultaneously | |
| CN108919361A (en) | A kind of frequency domain natural electric field annular three-dimensional exploitation method of identification underground fluid flow direction | |
| CN110018521A (en) | A kind of natural electric field diurnal correction method | |
| CN108957562B (en) | A kind of natural electric field exploitation method based on multichannel natural electric-field frequency selector | |
| CN110109184A (en) | A kind of passive field source class three-dimensional electric field exploitation method based on more days heights | |
| Linder et al. | Geomagnetic secular variation recorded by sediments deposited during the Cretaceous normal superchron at low latitude | |
| CN109884714A (en) | A kind of controllable source method for electromagnetically measuring, device and its storage medium | |
| CN110058318A (en) | A kind of one-dimensional square bearing calibration of the natural electric field based on measuring electrode coordinate | |
| CA2782353C (en) | A system for scanning of earth's self-potential field | |
| CN110927632A (en) | Frequency domain horizontal X-direction magnetic field component observation and data processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181123 |