CN106154337A - Vertical induced polarization device and method for detecting shale stratum - Google Patents
Vertical induced polarization device and method for detecting shale stratum Download PDFInfo
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- CN106154337A CN106154337A CN201610768311.1A CN201610768311A CN106154337A CN 106154337 A CN106154337 A CN 106154337A CN 201610768311 A CN201610768311 A CN 201610768311A CN 106154337 A CN106154337 A CN 106154337A
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- 230000010287 polarization Effects 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims description 8
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000005259 measurement Methods 0.000 claims description 28
- 230000015572 biosynthetic process Effects 0.000 claims description 15
- 230000005284 excitation Effects 0.000 claims description 5
- 238000011835 investigation Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 2
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- 239000011435 rock Substances 0.000 description 2
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
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- 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
- G01V3/088—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 operating with electric fields
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Abstract
The invention discloses a vertical induced polarization device and a detection method for detecting a shale stratum, wherein the device comprises a current emission source, an induced polarization instrument is arranged on the current emission source, both the positive electrode and the negative electrode of the current emission source are connected with leads, the tail end of the lead connected with the positive electrode on the current emission source is connected with a current emission positive electrode, the device also comprises a current emission negative electrode assembly, the current emission negative electrode assembly comprises a plurality of current emission negative electrodes, the current emission negative electrodes are uniformly distributed on the periphery outside the current emission positive electrode, and all the current emission negative electrodes are connected in parallel and are connected with the negative electrode on the current emission source through leads; the positive and negative poles on the exciter are respectively connected with a non-polarized positive pole and a non-polarized negative pole through leads. The invention has the advantages of large detection depth, high field efficiency and good detection effect, and can be widely applied to induced polarization exploration in the fields of oil gas, engineering and the like.
Description
Technical field
The present invention relates to technical field of geological exploration, be specifically related to a kind of vertical induced polarization device detecting shale formation
And detection method.
Background technology
Rammell is the mineral reserve body of shale gas, and mainly in marine deposit stratum, it has obvious height compared with country rock
Polarizability feature, needs to carry out the exploration of rammell before i.e. needing to exploit the shale gas in rammell, at present, induced polarization method is
A kind of geophysical method of measurement rock mass, conventional induced polarization device is symmetrical four-stage device, with this induced polarization dress
Putting the stratum that can detect more than the 1000 meters degree of depth, the spacing of detection both positive and negative polarity is up to 3000m, and long both positive and negative polarity is away from causing scene
The shortcomings such as wiring difficulty is big, inefficiency, interference signal are complicated, detection accuracy is low, so, the exploration of existing shale gas needs to solve
The certainly technical problems such as exploration cost height, low, the low precision of efficiency.
Content of the invention
It is desirable to provide a kind of vertical induced polarization device detecting shale formation and detection method, existing to solve
The existing detection both positive and negative polarity of shale gas exploration away from excessive, field wiring difficulty big, inefficiency, interference signal complicated, visit
The problems such as precision is low, cost is high, efficiency is low of survey.
The present invention is achieved by following technical solution:
A kind of vertical induced polarization device detecting shale formation, this device includes current emission source, on current emission source
Induced polarization instrument is installed, the both positive and negative polarity in described current emission source is respectively connected with wire, be connected with the positive pole on current emission source
Wire end is connected with current emission positive pole, also includes current emission negative pole assembly, and this current emission negative pole assembly includes some
Current emission negative pole, current emission negative pole is evenly distributed on the circumference outside current emission positive pole, all current emission negative poles
It is in parallel and be connected with the negative pole on current emission source by wire；Both positive and negative polarity on described induced polarization instrument is connected by wire respectively
Have do not polarize positive pole and the negative pole that do not polarizes.
It is in series with constant-current controller on each current emission negative lead road.
The circular configuration radius being made up of all current emission negative poles is r, and r is the 1/5 of max survey depth.
Number n of described current emission negative pole meets n=int (π r/50m).
Using the detection method that shale formation is detected by above-mentioned vertical induced polarization device, the method includes following step
Rapid:
Design annular vertical excitation apparatus: determine sensing point and investigation depth h, set at distance measurement point lateral separation L1
Putting current emission positive pole and the current emission negative pole of annular, determining polarizability receiving point at sensing point opposite side, polarizability receives
Distance between point and current emission positive pole is L2, is symmetrical arranged do not polarize positive pole and not pole in the polarizability receiving point left and right sides
Change negative pole, do not polarize positive pole and the distance not polarized between negative pole is L3；
Device Job readiness: current emission source, weighing apparatus stream controller, induced polarization instrument are connected with power supply, open instrument power source and enter
Enter systems inspection, selective exitation polarization measurement mode, check each circuit supply current of annular, it is desirable to all electric currents are more than
500mA, deviation≤5% with mean value；Earth resistance maximum≤200 Ω；
Depth measurement point designs: on the basis of sensing point, current emission positive pole and current emission negative pole, do not polarize positive pole and not pole
Change negative pole press Log (Li/2) (i=1,2,3 ... k) phase progressively think two side shiftings, point-to-point measurement polarizability in moving process；
Profile survey: choose induced-polarization measurement pattern, inputs related device parameter, power-on time setting >=30s, measurement
Select a half period；Each depth measurement exploratory spot completes the measurement of k pole span altogether, until completing all of depth measurement point on survey line.
L1 minimum of a value in described step (a) is 10m, and L1 maximum is 1.5h；L2=2L1, L3=log (L2).
In described step (c), Log (Li/2) is arithmetic progression, and the minimum 10m of L1, Lk is 1.5hmax to the maximum.
The invention has the beneficial effects as follows:
Compared with prior art, the vertical induced polarization device of the detection shale formation that the present invention provides is pure current field dress
Putting, excitation direction is designed as vertically exciting by this device, produce in the range of measuring point stable, can in depth under relatively deep degree
Vertical excitation current field, can effectively excite rammell, can effectively observe on ground that the polarization of rammell is abnormal, and this device detects
Degree of depth efficiency big, on-the-spot is high, Effect on Detecting is good, can be widely applied to the induced polarization investigation and prospecting in the field such as oil gas, engineering.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the geologic structure figure needing to detect；
Fig. 3 is the use state diagram of the present invention；
Fig. 4 is vertical induced polarization Interpretation On The Results figure；
In figure: 1-current emission source, 2-induced polarization instrument, 3-current emission positive pole, 4-current emission negative pole, 5-current constant control
Device, 6-wire, 7-does not polarize positive pole, and 8-does not polarize negative pole, 9-sensing point, 10-polarizability receiving point.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is described further, but required protection domain does not limit to
In described；
As it is shown in figure 1, the vertical induced polarization device detecting shale formation that the present invention provides, this device includes that electric current is sent out
Penetrate source 1, current emission source 1 is provided with induced polarization instrument 2, the both positive and negative polarity in described current emission source 1 is respectively connected with wire 6, with electricity
Wire 6 end that positive pole on stream emission source 1 is connected is connected with current emission positive pole 3, also includes current emission negative pole assembly, should
Current emission negative pole assembly includes some current emission negative poles 4, and current emission negative pole 4 is evenly distributed on outside current emission positive pole 3
On the circumference in portion, all current emission negative poles 4 are in parallel and are connected with the negative pole on current emission source 1 by wire 6；Described sharp
Both positive and negative polarity on electricity instrument 2 is connected with do not polarize positive pole 7 and the negative pole 8 that do not polarizes respectively by wire 6.
It is in series with constant-current controller 5 on each current emission negative pole 4 connection line.
The circular configuration radius being made up of all current emission negative poles 4 is r, and r is the 1/5 of max survey depth.
Number n of described current emission negative pole 4 meets n=int (π r/50m).
Embodiment:
When using above-mentioned vertical induced polarization device to detect shale formation as shown in Figure 2, first design annular
Vertical excitation apparatus: determine sensing point 9 and investigation depth h, current emission positive pole is set at distance measurement point 9 lateral separation L1
3 and annular current emission negative pole 4, determine polarizability receiving point 10, polarizability receiving point 10 and electric current at sensing point 9 opposite side
The distance launched between positive pole 3 is L2, is symmetrical arranged the positive pole 7 and do not polarize negative of not polarizing in polarizability receiving point 10 left and right sides
Pole 8, does not polarize positive pole 7 and the distance not polarized between negative pole 8 is L3, and L1 minimum of a value is 10m, and L1 maximum is 1.5h；L2=
2L1, L3=log (L2)；Followed by device Job readiness: stream controller the 5th, induced polarization instrument 2 is weighed with power supply even in current emission source the 1st,
Connect, open instrument power source and enter systems inspection, selective exitation polarization measurement mode, check each circuit supply current of annular,
All electric currents are asked to be more than 500mA, deviation≤5% with mean value；Earth resistance maximum≤200 Ω；Next to that depth measurement point sets
Meter: on the basis of sensing point 9, the 4th, current emission positive pole 3 and current emission negative pole do not polarize positive pole 7 and the negative pole 8 that do not polarizes by Log
(Li/2) (i=1,2,3 ... k) progressively think two side shiftings mutually, as it is shown on figure 3, point-to-point measurement polarizability in moving process, Log
(Li/2) being arithmetic progression, the minimum 10m of L1, Lk is 1.5hmax to the maximum；It is finally profile survey: choose induced-polarization measurement
Pattern, inputs related device parameter, power-on time setting >=30s, and a half period is selected in measurement；Each depth measurement exploratory spot has been total to
Becoming the measurement of k pole span, until completing all of depth measurement point on survey line, result of detection is as shown in Figure 4.
Claims (7)
1. the vertical induced polarization device detecting shale formation, it is characterised in that: this device includes current emission source (1),
Induced polarization instrument (2) is installed on current emission source (1), the both positive and negative polarity of described current emission source (1) is respectively connected with wire (6), with
Wire (6) end that positive pole on current emission source (1) is connected is connected with current emission positive pole (3), also includes that current emission is born
Pole assembly, this current emission negative pole assembly includes some current emission negative poles (4), and current emission negative pole (4) is evenly distributed on electricity
Stream is launched on the outside circumference of positive pole (3), and all current emission negative poles (4) are in parallel and by wire (6) and current emission source
(1) negative pole on is connected；Both positive and negative polarity on described induced polarization instrument (2) is connected with the positive pole that do not polarizes (7) and not by wire (6) respectively
Polarization negative pole (8).
2. the vertical induced polarization device of detection shale formation according to claim 1, it is characterised in that: each electric current is sent out
Penetrate and on negative pole (4) connection line, be in series with constant-current controller (5).
3. the vertical induced polarization device of detection shale formation according to claim 1, it is characterised in that: by all electric currents
The circular configuration radius that transmitting negative pole (4) forms is r, and r is the 1/5 of max survey depth.
4. the vertical induced polarization device of detection shale formation according to claim 1, it is characterised in that: described electric current is sent out
Number n penetrating negative pole (4) meets n=int (π r/50m).
5. one kind uses the detection method that shale formation is detected by above-mentioned vertical induced polarization device, it is characterised in that: should
Method comprises the following steps:
A () designs annular vertical excitation apparatus: determine sensing point (9) and investigation depth h, in distance measurement point (9) lateral separation
Current emission positive pole (3) and the current emission negative pole (4) of annular are set at L1, determine that polarizability connects at sensing point (9) opposite side
Sink (10), the distance between polarizability receiving point (10) and current emission positive pole (3) is L2, left in polarizability receiving point (10)
Right bilateral symmetry arranges and does not polarize positive pole (7) and the negative pole (8) that do not polarizes, and do not polarize positive pole (7) and not polarizing between negative pole (8)
Distance is L3；
(b) device Job readiness: current emission source (1), weighing apparatus stream controller (5), induced polarization instrument (2) are connected with power supply, open instrument
Device power supply enters systems inspection, selective exitation polarization measurement mode, checks each circuit supply current of annular, it is desirable to all electric currents
More than 500mA, deviation≤5% with mean value；Earth resistance maximum≤200 Ω；
C () depth measurement point designs: on the basis of sensing point (9), current emission positive pole (3) and current emission negative pole (4), does not just polarize
Pole (7) and do not polarize negative pole (8) by Log (Li/2) (i=1,2,3 ... k) mutually progressively think two side shiftings, pointwise in moving process
Measurement polarizability；
D () profile survey: choose induced-polarization measurement pattern, inputs related device parameter, power-on time setting >=30s, measurement
Select a half period；Each depth measurement exploratory spot completes the measurement of k pole span altogether, until completing all of depth measurement point on survey line.
6. the detection method of the vertical induced polarization device of detection shale formation according to claim 1, it is characterised in that:
L1 minimum of a value in described step (a) is 10m, and L1 maximum is 1.5h；L2=2L1, L3=log (L2).
7. the detection method of the vertical induced polarization device of detection shale formation according to claim 1, it is characterised in that:
In described step (c), Log (Li/2) is arithmetic progression, and the minimum 10m of L1, Lk is 1.5hmax to the maximum.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610768311.1A CN106154337A (en) | 2016-08-30 | 2016-08-30 | Vertical induced polarization device and method for detecting shale stratum |
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| CN201610768311.1A CN106154337A (en) | 2016-08-30 | 2016-08-30 | Vertical induced polarization device and method for detecting shale stratum |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007351A (en) * | 2019-05-08 | 2019-07-12 | 桂林理工大学 | An Induced Polarization Method for Detecting Heavy Metal Wastewater |
| CN110068867A (en) * | 2019-05-08 | 2019-07-30 | 桂林理工大学 | A kind of induced polarization method monitoring heavy metal containing sewage leakage method of pre-buried measuring electrode |
| CN112859175A (en) * | 2021-01-04 | 2021-05-28 | 中国石油天然气集团有限公司 | Transmitting electrode structure |
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| US4812766A (en) * | 1987-11-02 | 1989-03-14 | Atlantic Richfield Company | Telluric noise cancellation in induced polarization prospecting |
| CN1536373A (en) * | 2003-04-10 | 2004-10-13 | 中国石油集团东方地球物理勘探有限责 | Network charging potential monitoring method |
| CN101706585A (en) * | 2009-10-28 | 2010-05-12 | 中南大学 | Method for electrically forecasting danger in underground tunneling engineering |
| CN101793973A (en) * | 2010-02-11 | 2010-08-04 | 天津英驰光电科技有限公司 | While-drilling electric method |
| CN205958771U (en) * | 2016-08-30 | 2017-02-15 | 中国电建集团贵阳勘测设计研究院有限公司 | Vertical induced polarization device for detecting shale stratum |
-
2016
- 2016-08-30 CN CN201610768311.1A patent/CN106154337A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4812766A (en) * | 1987-11-02 | 1989-03-14 | Atlantic Richfield Company | Telluric noise cancellation in induced polarization prospecting |
| CN1536373A (en) * | 2003-04-10 | 2004-10-13 | 中国石油集团东方地球物理勘探有限责 | Network charging potential monitoring method |
| CN101706585A (en) * | 2009-10-28 | 2010-05-12 | 中南大学 | Method for electrically forecasting danger in underground tunneling engineering |
| CN101793973A (en) * | 2010-02-11 | 2010-08-04 | 天津英驰光电科技有限公司 | While-drilling electric method |
| CN205958771U (en) * | 2016-08-30 | 2017-02-15 | 中国电建集团贵阳勘测设计研究院有限公司 | Vertical induced polarization device for detecting shale stratum |
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| Title |
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| 熊光楚: "《金属矿区物探方法概论》", 30 April 1980, 科学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007351A (en) * | 2019-05-08 | 2019-07-12 | 桂林理工大学 | An Induced Polarization Method for Detecting Heavy Metal Wastewater |
| CN110068867A (en) * | 2019-05-08 | 2019-07-30 | 桂林理工大学 | A kind of induced polarization method monitoring heavy metal containing sewage leakage method of pre-buried measuring electrode |
| CN110007351B (en) * | 2019-05-08 | 2024-06-21 | 桂林理工大学 | Induced polarization method for detecting heavy metal sewage |
| CN112859175A (en) * | 2021-01-04 | 2021-05-28 | 中国石油天然气集团有限公司 | Transmitting electrode structure |
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Application publication date: 20161123 |