CN104678442B - Seismometer downhole device - Google Patents
Seismometer downhole device Download PDFInfo
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- CN104678442B CN104678442B CN201510105334.XA CN201510105334A CN104678442B CN 104678442 B CN104678442 B CN 104678442B CN 201510105334 A CN201510105334 A CN 201510105334A CN 104678442 B CN104678442 B CN 104678442B
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- stress
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Abstract
The invention discloses a kind of seismometer downhole device, it is related to downhole seismic observation technical field.Structure of the invention is：Cable（60）, centralizer（20）, external seal cylinder（40）And positioning seat（50）It is sequentially connected；Stress relieving device（10）Installed in connection centralizer（20）The cable of one end（60）On；Steel cable（70）It is connected to stress relieving device（10）Stress claw（13）And centralizer（20）Sliding block（24）On；In outer sealing drum（40）Inside it is provided with interior sealing cylinder（30）, in interior sealing cylinder（30）Inside it is provided with borehole seismic meter（00）.The present invention can reduce the operation noise of seismometer, improve the resolution ratio of seismometer；Drilling cost is substantially reduced, for the popularization of borehole apparatus provides good technical support.
Description
Technical field
The present invention relates to downhole seismic observation technical field, more particularly to a kind of seismometer downhole device.
Background technology
Geoscience is the multidisciplinary synthesis science based on observation, and the signal to noise ratio for how improving observation is observation all the time
Most important problem in research.In industrialization, urbanization, the today for modernizing high development, various traffic, industry etc. are artificially made an uproar
Sound, the change of ambient temperature, air pressure fluctuation and ground inclination etc. all make the zero drift of instrument, cause very big dry on record
Disturb.Observation with the long-period seismograph is carried out on the ground, can usually bring serious ambient noise to disturb, the normal record of influence.For
The influence of ground noise jamming is excluded as much as possible, observation signal to noise ratio is improved, and recent domestic earthquake observating station starts
Develop from ground to Deep Underground, establish a large amount of deep-well observation stations and constitute deep-well sighting opportunity.
Japan started deep bore hole seismic observation before and after 1980, and by 2000, existing 22 deep-wells observation station, achieved
High accuracy, the seismological observation material of high s/n ratio that only ground sighting opportunity cannot be obtained, in terms of having promoted earthquake prediction
Research.Because borehole observation has far-reaching scientific meaning, since the nineties in 20th century, the state such as the U.S., Germany, Holland is successive
The underground long-term observation station is established, China just proceeds by the development of related downhole instrument from the later stage nineties, develops well
Lower short period seismometer, achieves certain observation data and achievement in research.
It is installing instruments for many years experience have shown that, mounted in deep under ground sensor generally than be arranged on ground or near-earth
Table will stablize.Here it is why those bomb shelters, discarded underground mine is often used as the seismographic station platform location of low noise.
But, the place that build platform can not always find ready-made hole body or deep-well.And drill for this provide one it is practicable
Anywhere solution, almost can be mounted in depths by seismic sensor.
It is a very stable running environment in drilling, because temperature stabilization, pressure is constant in closing drilling, it is possible to
The operation precision instrument in drilling.The temperature and pressure change of broad-band sensor is the main cause for producing noise.For handle
Temperature influence is reduced to acceptable level, and the instrument requirements in earth's surface or cellar have insulation.Similar, to eliminate
The noise that pressure causes, it is desirable to well-designed pressure vessel, especially vertically to long period instrument.With going out for broadband instrument
It is existing, it is considered to which that pressure and temperature effect becomes even more important.Because this quasi-instrument is very wide by the sensitive frequency scope of ectocine, make
It is more difficult from ectocine.Due to the inertia of huge hot material and the surrounding earth, the closing drilling of middle deep can
Fabulous temperature stability is provided.And, built with very thick steel sleeve, this sleeve pipe constitutes one for most of earthquake drillings
Rigid container, greatly reduces the atmospheric pressure change in drilling.
The content of the invention
The purpose of the present invention is that the shortcoming and defect for overcoming prior art to exist, there is provided a kind of seismometer is gone into the well dress
Put, allow to seismometer is effectively ensured and smoothly go into the well, realize the good coupling of instrument and the borehole wall.
The object of the present invention is achieved like this：
The present apparatus includes borehole seismic meter；
It is provided with stress relieving device, centralizer, interior sealing cylinder, external seal cylinder, positioning seat, cable and steel cable；
Its position and annexation are：
Cable, centralizer, external seal cylinder and positioning seat are sequentially connected；
Stress relieving device is arranged on the cable of connection centralizer one end；
Steel cable is connected on the sliding block of the stress claw of stress relieving device and centralizer；
Interior sealing cylinder is provided with outer sealing drum, borehole seismic meter is provided with interior sealing cylinder.
The present invention has following advantages and good effect：
1. the operation noise of seismometer can be reduced, the resolution ratio of seismometer is improved；
2. drilling cost is substantially reduced, for the popularization of borehole apparatus provides good technical support.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the structural representation of stress relieving device；
Fig. 3 is the structural representation of centralizer.
In figure：
00-borehole seismic meter；
10-stress relieving device,
11-stress bars, 12-spring, 13-stress claw, 14-substrate；
20-centralizer,
21-fixing axle, 22-righting connecting rod, 23-righting claw,
24-sliding block, 241-lower nahlock；
25-external seal cover, 251-upper nahlock；
30-interior sealing cylinder；
40-external seal cylinder；
50-positioning seat；
60-cable；
70-steel cable.
Specific embodiment
Describe in detail with reference to the accompanying drawings and examples：
First, it is overall
Such as Fig. 1, the present apparatus includes borehole seismic meter 00；
It is provided with stress relieving device 10, centralizer 20, interior sealing cylinder 30, external seal cylinder 40, positioning seat 50, cable 60 and steel
Rope 70；
Its position and annexation are：
Cable 60, centralizer 20, external seal cylinder 40 and positioning seat 50 are sequentially connected；
Stress relieving device 10 is arranged on the cable 60 of connection centralizer 20 one end；
Steel cable 70 is connected on the sliding block 24 of the stress claw 13 of stress relieving device 10 and centralizer 20；
Interior sealing cylinder 30 is provided with outer sealing drum 40, borehole seismic meter 00 is provided with interior sealing cylinder 30.
2nd, functional part
1st, stress relieving device 10
Such as Fig. 1,2, stress relieving device 10 includes stress bars 11, spring 12, stress claw 13 and substrate 14；
Its position and annexation are：
In 2 points of one end for being connected to stress bars 11 and stress claw 13, stress bars up and down of substrate 14
11 and the other end of stress claw 13 be connected with spring 12.
The function of stress relieving device 10 is：
The influence of the interference to borehole seismic meter 00 of rocking of its upper cable 60 is minimized, it is ensured that borehole seismic meter 00
Accuracy.
Its working mechanism is：During going into the well, under the active force of steel cable 70, the downward extension spring of stress claw 13
12, whole device is smoothly gone into the well；To behind shaft bottom under the whole device, steel cable 70 disappears to the active force of stress claw 13, this
Shi Yingli claws 13 are pulled up under the active force of spring 12, finally block the borehole wall, maintain static stress relieving device 10, from
And prevent rocking for cable 60.
* stress bars 11
Stress bars 11 is a kind of rectangle stick, and its two ends is respectively arranged with left and right aperture, left aperture connecting spring
12 upper end, right aperture is connected by screw the upper point of substrate 14.
Its function is to fix the upper end of spring 12.
* spring 12
Spring 12 is a kind of general helical spring, and its upper and lower ends connects stress bars 11 and stress claw 13 respectively
Left end；
Its function is connection stress bars 11 and stress claw 13.
* stress claw 13
Stress claw 13 is a kind of elongated stick, and left end is inclined-plane, and its two ends is respectively arranged with left and right aperture, left aperture
The lower end of connecting spring 12, right aperture is connected by screw the lower point of substrate 14；
Its function is whole device is blocked the borehole wall after going into the well.
* substrate 14
Substrate 14 is a kind of rectangular blocks, and its upper and lower 2 points are respectively arranged with two circular holes, and the stress that is connected respectively connects
The right-hand member of extension bar 11 and stress claw 13；
Its function is stress relieving device 10 is fixed on cable 60.
2nd, centralizer 20
Such as Fig. 1,3, centralizer 20 includes fixing axle 21, righting connecting rod 22, righting claw 23, sliding block 24 and external seal cylinder
Lid 25.
Its position and annexation are：
Sealing cover 25 upper surface center is vertically installed with fixing axle 21 outside, has sliding block in the upper socket of fixing axle 21
24,3 one end of righting connecting rod 22 are connected with the periphery of lower nahlock 241 of sliding block 24 is equidistant, cover 25 is sealed outside
The periphery of upper nahlock 251 is equidistant to be connected with 3 one end of righting claw 23, the other end and righting claw 23 of righting connecting rod 22
One end be connected by screw；Sliding block 24 is connected by steel cable 70 and stress claw 13.
* fixing axle 21
Fixing axle 21 is a kind of circular shaft.
* righting connecting rod 22
Righting connecting rod 22 is a kind of rectangle stick, and its two ends is respectively arranged with upper and lower aperture.
* righting claw 23
Righting claw 23 is a kind of elongated stick, and one end is inclined-plane, and its two ends is respectively arranged with upper and lower aperture.
* sliding block 24
Sliding block 24 is a kind of up big and down small ladder nahlock, and it is provided centrally with through hole, on the circumference of lower bullet 241
It is evenly arranged with 3 earholes.
* external seal cover 25
External seal cover 25 is a kind of small ladder nahlock big up and down, and it is provided centrally with through hole, in upper bullet 251
3 earholes are evenly arranged with circumference.
The working mechanism of centralizer 20 is：Sliding block 24 can be in moving longitudinally up and down in fixing axle 21；During going into the well
The righting claw 23 of centralizer 20 is packed up under spring force, and righting claw 23 opens the clamping borehole wall, and whole device is helped vertically
Just in seismological observation well center.
3rd, interior sealing cylinder 30
Such as Fig. 1, interior sealing cylinder 30 is a kind of cylinder；
The inwall bottom surface connection of the lower surface and external seal cylinder 40 of interior sealing cylinder 30；
Interior sealing cylinder 30 function be：Seismic wave is delivered to borehole seismic meter 00 by positioning seat 50 and interior sealing cylinder 30
Sensor.
4th, external seal cylinder 40
Such as Fig. 1, external seal cylinder 40 is a kind of cylinder；
The upper surface of external seal cylinder 40 is connected with the bottom surface of centralizer 20, and lower surface is connected with the upper surface of positioning seat 50.
External seal cylinder 40 function be：Air pressure, variation in water pressure in shielding wellhole, prevent the change of ambient pressure from being delivered to
Interior sealing cylinder 30.
5th, positioning seat 50
Such as Fig. 1, positioning seat 50 is a kind of bullet, is fixed on the lower surface of external seal cylinder 40.
The function of positioning seat 50 is：The bottom of firm whole device.
6th, cable 60
Such as Fig. 1, cable 60 is a kind of general part；One end connects centralizer 20, control system on another termination well.
The function of cable 60 is：One is the weight that device is undertaken when device is gone into the well, and two are connected with borehole seismic meter 00.
7th, steel cable 70
Such as Fig. 1, steel cable 70 is a kind of general part；The claw 13 of one end connection stress relieving device 10, other end connection righting
The sliding block 24 of device 20；
The function of steel cable 70 is：During going into the well, steel cable 70 receives the claw 23 of centralizer under the active force of spring 12
Rise.
3rd, the working mechanism of the present apparatus：
Stress relieving device 10 is arranged on the cable 60 of connection centralizer 20 one end, and rocking for its upper cable 60 is dry
Disturb the influence to borehole seismic meter 00 to be minimized, it is ensured that the accuracy of the record of borehole seismic meter 00；
Centralizer 20 is arranged on the upper end of external seal cylinder 40, and the claw 23 of centralizer 20 is acted in steel cable 70 during going into the well
Under pack up, claw 23 opens the clamping borehole wall, and the vertical righting of whole device is in seismological observation well center；
The sensor and its floor installation of borehole seismic meter 00 in interior sealing cylinder 30, then with centralizer 20 and bottom
Positioning seat 50 is connected, and makes seismic wave that the sensor of borehole seismic meter 00 is delivered to by positioning seat 50 and centralizer 20；External seal
Cylinder 40 shields air pressure and variation in water pressure in wellhole, prevents the change of ambient pressure from being delivered to interior sealing cylinder 30；The present apparatus along
Wellhole is vertically inserted into shaft bottom；One key property of the present apparatus is during whole device is gone into the well and need not adjust positioning seat
50 direction, after the present apparatus is put into underground, no matter the sensor of borehole seismic meter 00 be in any direction, can by
Installed on well only one of which level point to well on seismometer, and its sensitive direction of principal axis is pointed to geographical northern south orientation or thing
To, after the data that two horizontal directions of the sensor of borehole seismic meter 00 are recorded carry out angular transition, by well with underground
Equidirectional data carry out coherent analysis, obtain borehole seismic meter 00 with geographic orientation differential seat angle, by this differential seat angle
The number with angular transition function is brought into adopt.
Claims (1)
1. a kind of seismometer downhole device, including borehole seismic meter (00)；It is characterized in that：
It is provided with stress relieving device (10), centralizer (20), interior sealing cylinder (30), external seal cylinder (40), positioning seat (50), cable
And steel cable (70) (60)；
Its position and annexation are：
Cable (60), centralizer (20), external seal cylinder (40) and positioning seat (50) are sequentially connected；
Stress relieving device (10) is on the cable (60) of connection centralizer (20) one end；
Steel cable (70) is connected on the sliding block (24) of the stress claw (13) of stress relieving device (10) and centralizer (20)；
Interior sealing cylinder (30) is provided with outer sealing drum (40), borehole seismic meter (00) is provided with interior sealing cylinder (30)；
The structure of described stress relieving device (10) is：
Including stress bars (11), spring (12), stress claw (13) and substrate (14)；
In 2 points of one end for being connected to stress bars (11) and stress claw (13) up and down of substrate (14), stress connection
The other end of bar (11) and stress claw (13) is connected with spring (12)；
The structure of described centralizer (20) is：
Including fixing axle (21), righting connecting rod (22), righting claw (23), sliding block (24) and external seal cover (25)；
Sealing cover (25) upper surface center is vertically installed with fixing axle (21) outside, has cunning in the upper socket of fixing axle (21)
Block (24), is connected with 3 one end of righting connecting rod (22) lower nahlock (241) periphery of sliding block (24) is equidistant, close outside
Upper nahlock (251) periphery of sealed tube lid (25) is equidistant to be connected with 3 one end of righting claw (23), righting connecting rod (22)
The other end of the other end and righting claw (23) is connected by screw；Sliding block (24) is connected by steel cable (70) and stress claw (13)
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510105334.XA CN104678442B (en) | 2015-03-11 | 2015-03-11 | Seismometer downhole device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510105334.XA CN104678442B (en) | 2015-03-11 | 2015-03-11 | Seismometer downhole device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104678442A CN104678442A (en) | 2015-06-03 |
| CN104678442B true CN104678442B (en) | 2017-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510105334.XA Active CN104678442B (en) | 2015-03-11 | 2015-03-11 | Seismometer downhole device |
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| CN (1) | CN104678442B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356959B (en) * | 2017-06-27 | 2023-05-23 | 中国地震局工程力学研究所 | Integrated sensor level adjusting device |
| CN114325841B (en) * | 2021-12-31 | 2022-08-12 | 北京港震科技股份有限公司 | Installation device for underground seismometer |
| CN114518602B (en) * | 2022-02-17 | 2022-11-22 | 广东省有色矿山地质灾害防治中心 | Ground penetrating radar device of single Kong Tance boulder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2086792U (en) * | 1991-04-23 | 1991-10-16 | 华北石油管理局测井公司 | Centralising apparatus for oil well logging |
| JP5302151B2 (en) * | 2009-09-18 | 2013-10-02 | 帝石削井工業株式会社 | How to install a seismometer at the seismic observation well |
| JP5302255B2 (en) * | 2010-04-01 | 2013-10-02 | 帝石削井工業株式会社 | Seismometers and seismometer installation methods at seismic wells |
| CN204556852U (en) * | 2015-03-11 | 2015-08-12 | 中国地震局地震研究所 | A kind of seismometer downhole device |
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| CN104678442A (en) | 2015-06-03 |
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Effective date of registration: 20171106 Address after: 430071 Hongshan Road, Wuchang District, Hubei, No. 40, No. Co-patentee after: Wuhan Institute of Scientific Instruments Co., Ltd. Patentee after: Earthquake Inst., China Earthquake Bureau Address before: 430071 Hongshan Road, Wuchang District, Hubei, No. 40, No. Patentee before: Earthquake Inst., China Earthquake Bureau |