CN108333631B - Body strain gauge righting device - Google Patents
Body strain gauge righting device Download PDFInfo
- Publication number
- CN108333631B CN108333631B CN201810286643.5A CN201810286643A CN108333631B CN 108333631 B CN108333631 B CN 108333631B CN 201810286643 A CN201810286643 A CN 201810286643A CN 108333631 B CN108333631 B CN 108333631B
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- China
- Prior art keywords
- pressing block
- probe
- upper pressing
- steel cylinder
- rod
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- 239000000523 sample Substances 0.000 claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 238000005553 drilling Methods 0.000 claims description 13
- 239000004568 cement Substances 0.000 abstract description 7
- 239000011435 rock Substances 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 239000004677 Nylon Substances 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
- G01V1/52—Structural details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/01—Measuring or predicting earthquakes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
- G01V1/52—Structural details
- G01V2001/526—Mounting of transducers
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a body strain gauge righting device, which comprises a shell steel cylinder, wherein a body strain gauge main body is arranged in the shell steel cylinder, an upper pressing block is arranged in the shell steel cylinder above the body strain gauge main body, and a lower pressing block is arranged in the shell steel cylinder below the body strain gauge main body; the upper pressing block is in a reverse cone shape, a lifting beam is fixed on the top surface of the upper pressing block, an upper pressing rod is arranged on the side wall of the shell steel cylinder corresponding to the side conical surface of the upper pressing block, the inner end of the upper pressing rod is propped against the side conical surface of the upper pressing block, and the upper pressing rod is provided with an upper side pressing spring; the lower pressing block is cone-shaped, the top surface of the lower pressing block is provided with a lower pressure spring, the bottom surface of the lower pressing block is provided with a probe base, the side wall of the shell steel cylinder corresponding to the side conical surface of the lower pressing block is provided with a lower pressing rod, the inner end of the lower pressing rod is propped against the side conical surface of the lower pressing block, and the lower pressing rod is provided with a lower side pressure spring. The upper part and the lower part of the probe can be fixed at the center of the well hole respectively through the upper pressing block and the lower pressing block which are pressed by the springs, so that the cement coupling layer is uniform, the instrument can accurately observe the stress change of rock conduction, and reliable data are provided for earthquake prediction.
Description
Technical Field
The invention relates to a drilling strain observation device applied to seismic precursor observation and the like, in particular to a body strain gauge righting device.
Background
The body strain gauge is arranged in a drill hole with the depth of 60-200 m, the size of the drill hole is larger than the outer diameter of the body strain gauge, after the body strain gauge is put into the well, a centering device is needed to fix the body strain gauge at the center of the drill hole, and then the instrument and the rock wall of the drill hole are coupled together by special cement around the body strain gauge. If the body strain gauge cannot be guaranteed to be in the center of the drill hole, one side of the cement coupling layer is thicker, and the other side of the cement coupling layer is thinner, so that the cement coupling effect is affected, and further the instrument observation data is affected.
The original righting device is characterized in that three rubber rods are arranged on the base part of a body strain gauge, and six nylon screws are arranged on the periphery of the top. The length of the rubber rod is close to the diameter of the drilling hole, and the top point of the rubber rod contacts the wall of the drilling hole, so that the bottom of the instrument is ensured to be positioned at the center of the drilling hole; after six nylon screws are arranged on the periphery of the top, the diameter is slightly smaller than the diameter of the drilling hole, so that the top can be ensured to be in the center of the drilling hole, and the instrument is positioned in the center of the drilling hole.
The existing mode has great defects, the three rubber rods at the bottom are elastic, and when the instrument is placed at the bottom of the well, the elastic force of the rubber rods does not need to enable the bottom of the instrument to bounce back to the center of a drilling hole because the weight of the body strain gauge is close to 40 kg; the six nylon screws at the top are scraped by the rock on the well wall in the process of the probe descending, even if the rock is not scraped completely, because the outer diameter of the probe after the nylon screws are added to the probe is also required to be smaller than the diameter of a drilled hole in consideration of the smoothness of instrument descending (otherwise, the instrument is hung by a tiny probe stone in the drilled hole to cause descending accidents), and thus the top of the probe cannot be positioned in the center of the drilled hole.
Disclosure of Invention
The invention aims to provide a body strain gauge righting device.
The invention aims at realizing the following technical scheme:
the body strain gauge righting device comprises a shell steel cylinder, wherein a body strain gauge main body is arranged in the shell steel cylinder, and the body strain gauge righting device is characterized in that an upper pressing block is arranged in the shell steel cylinder above the body strain gauge main body, and a lower pressing block is arranged in the shell steel cylinder below the body strain gauge main body;
the upper pressing block is in an inverted cone shape, a lifting beam is fixed on the top surface of the upper pressing block, an upper pressing rod is arranged on the side wall of the shell steel cylinder corresponding to the side conical surface of the upper pressing block, the inner end of the upper pressing rod is propped against the side conical surface of the upper pressing block, and the upper pressing rod is provided with an upper side pressure spring;
the lower pressing block is cone-shaped, the top surface of the lower pressing block is provided with a lower pressure spring, the bottom surface of the lower pressing block is provided with a probe base, the side wall of the shell steel cylinder corresponding to the side conical surface of the lower pressing block is provided with a lower pressing rod, the inner end of the lower pressing rod is propped against the side conical surface of the lower pressing block, and the lower pressing rod is provided with a lower side pressure spring.
According to the technical scheme provided by the invention, the body strain gauge righting device provided by the embodiment of the invention is divided into an upper part and a lower part, and the upper part and the lower part of the probe can be respectively fixed at the center of a well hole by pressing the upper pressing block and the lower pressing block through the springs, so that the cement coupling layer is uniform, and the instrument can accurately observe the stress change of rock conduction.
Drawings
Fig. 1 is a schematic diagram of a structure of a body strain gauge righting device in a retracted state of a top rod according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an extension state of a top rod of a body strain gauge righting device according to an embodiment of the present invention.
In the figure:
1. the device comprises a handle, 2, a fixing nut, 3, an upper pressure spring, 4, an upper pressing block, 5, an upper side pressure spring, 6, an upper top rod, 7, a shell steel cylinder, 8, a body strain gauge main body, 9, a lower pressure spring, 10, a lower side pressure spring, 11, a lower top rod, 12, a lower pressing block, 13 and a probe base.
Detailed Description
Embodiments of the present invention will be described in further detail below. What is not described in detail in the embodiments of the present invention belongs to the prior art known to those skilled in the art.
The body strain gauge righting device of the invention has the following preferred specific embodiments:
the device comprises a shell steel cylinder, wherein a body strain gauge main body is arranged in the shell steel cylinder, and is characterized in that an upper pressing block is arranged in the shell steel cylinder above the body strain gauge main body, and a lower pressing block is arranged in the shell steel cylinder below the body strain gauge main body;
the upper pressing block is in an inverted cone shape, a lifting beam is fixed on the top surface of the upper pressing block, an upper pressing rod is arranged on the side wall of the shell steel cylinder corresponding to the side conical surface of the upper pressing block, the inner end of the upper pressing rod is propped against the side conical surface of the upper pressing block, and the upper pressing rod is provided with an upper side pressure spring;
the lower pressing block is cone-shaped, the top surface of the lower pressing block is provided with a lower pressure spring, the bottom surface of the lower pressing block is provided with a probe base, the side wall of the shell steel cylinder corresponding to the side conical surface of the lower pressing block is provided with a lower pressing rod, the inner end of the lower pressing rod is propped against the side conical surface of the lower pressing block, and the lower pressing rod is provided with a lower side pressure spring.
When the lifting beam is in a natural sagging state under the lifting of the pull rope, the upper pressing block is in an upper position, the lower pressing block is in a lower position, and the upper top rod and the lower top rod are both retracted along the side conical surface and retracted into the shell steel cylinder;
when the probe base touches the bottom and the pull rope is in a loose state, the upper pressing block is in a lower position, the lower pressing block is in an upper position, and the upper top rod and the lower top rod slide outwards along the side conical surface and extend out of the shell steel cylinder.
The body strain gauge centralizing device is divided into an upper part and a lower part, the upper part and the lower part of the probe can be respectively fixed at the center of a well hole by extruding the upper pressing block and the lower pressing block through the springs, so that a cement coupling layer is uniform, and the instrument can accurately observe the stress change of rock conduction.
Specific examples:
as shown in fig. 1, the righting device is divided into an upper part and a lower part. When the probe is installed and lowered into the well, the probe Dan Kazhu instrument is not required to be retracted in order to smoothly lower the well.
The braided rope is tied on the lifting beam 1, the lifting beam 1 and the upper pressing block 4 are welded together, the probe falls down under the action of dead weight, the pulling force is transmitted to the lifting beam 1 through the braided rope, the instrument slowly falls down, the upper pressing spring 3 is extruded and deformed under the action of the dead weight and the upper pulling force of the probe, the upper pressing block 4 moves upwards relative to the steel cylinder 7 of the probe shell, the upper side pressing spring 5 enables the upper pressing block 6 to prop against the side surface of the upper pressing block 4 to move towards the middle of the probe through elasticity, and the probe is retracted.
The probe base 13 at the lower part moves downwards relative to the probe shell steel cylinder 7 under the action of the dead weight and the lower pressure spring 9, the lower pressing block 12 and the probe base 13 are connected together through bolts to move downwards, the lower side pressure spring 10 enables the lower top rod 11 to prop against the side surface of the lower pressing block 12 to move towards the middle part of the probe through elasticity, and the probe is retracted.
As shown in fig. 2, when the probe reaches the bottom of the borehole, the upper and lower pins need to extend to rest against the borehole wall in order to hold the probe in the center of the borehole.
The pulling force on the handle 1 and the upper pressing block 4 is not enough, the upper pressing block 4 is extruded downwards under the elasticity of the upper pressure spring 3, the upper pressing block 4 side face ejects the upper ejection rod 6, the upper ejection rod 6 is ejected on the well wall, and the upper part of the instrument is ensured to be positioned in the center of drilling.
After the probe base 13 contacts the bottom of the well, the probe presses the lower pressure spring 9 under the action of dead weight, the lower pressure spring 9 is extruded to be shortened, the lower pressing block 12 moves upwards relative to the shell steel cylinder, the side surface of the lower pressing block 12 ejects the lower ejection rod 11, so that the lower ejection rod 11 is ejected on the well wall, and the lower part of the instrument is ensured to be positioned in the center of drilling.
Compared with the prior art, the invention has considerable beneficial effects, can enable the body strain gauge to be arranged at the center of the drilling hole, and provides reliable data for earthquake prediction.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (1)
1. The body strain gauge righting device comprises a shell steel cylinder, wherein a body strain gauge main body is arranged in the shell steel cylinder, and the body strain gauge righting device is characterized in that an upper pressing block is arranged in the shell steel cylinder above the body strain gauge main body, and a lower pressing block is arranged in the shell steel cylinder below the body strain gauge main body;
the upper pressing block is in an inverted cone shape, a lifting beam is fixed on the top surface of the upper pressing block, an upper pressing rod is arranged on the side wall of the shell steel cylinder corresponding to the side conical surface of the upper pressing block, the inner end of the upper pressing rod is propped against the side conical surface of the upper pressing block, and the upper pressing rod is provided with an upper side pressure spring;
the lower pressing block is cone-shaped, the top surface of the lower pressing block is provided with a lower pressure spring, the bottom surface of the lower pressing block is provided with a probe base, the side wall of the shell steel cylinder corresponding to the side conical surface of the lower pressing block is provided with a lower top rod, the inner end of the lower top rod is propped against the side conical surface of the lower pressing block, and the lower top rod is provided with a lower side pressure spring;
when the probe is installed and lowered into the well:
the braided rope is tied on the lifting beam, the lifting beam and the upper pressing block are welded together, the probe falls down under the action of dead weight, the pulling force is transmitted to the lifting beam through the braided rope, so that the instrument slowly falls down, the upper pressing spring is extruded and deformed under the action of the dead weight and the upward pulling force of the probe, the upper pressing block moves upwards relative to the steel cylinder of the probe shell, and the upper pressing block pushes the upper pressing rod to move towards the middle of the probe from the side surface of the upper pressing block through elasticity by the upper side pressing spring and is retracted into the probe;
the probe base at the lower part moves downwards relative to the probe shell steel cylinder under the action of dead weight and the lower pressure spring, the lower pressing block and the probe base are connected together through a bolt to move downwards, the lower side pressure spring enables the lower top rod to prop against the side surface of the lower pressing block to move towards the middle part of the probe through elasticity, and the lower top rod is retracted into the probe;
after the probe reaches the bottom of the borehole:
the tension on the lifting beam and the upper pressing block is not high, the upper pressing block is extruded to move downwards under the elasticity of the upper pressure spring, and the side surface of the upper pressing block ejects the upper ejection rod, so that the upper ejection rod is ejected on the well wall, and the upper part of the instrument is ensured to be positioned in the center of drilling;
after the probe base contacts the bottom of the well, the probe presses the lower pressure spring under the action of dead weight, the lower pressure spring is extruded to be shortened, the lower pressing block moves upwards relative to the shell steel cylinder, the side surface of the lower pressing block ejects the lower ejection rod, so that the lower ejection rod is ejected on the well wall, and the lower part of the instrument is ensured to be positioned in the center of drilling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810286643.5A CN108333631B (en) | 2018-03-30 | 2018-03-30 | Body strain gauge righting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810286643.5A CN108333631B (en) | 2018-03-30 | 2018-03-30 | Body strain gauge righting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108333631A CN108333631A (en) | 2018-07-27 |
| CN108333631B true CN108333631B (en) | 2024-04-16 |
Family
ID=62932557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810286643.5A Active CN108333631B (en) | 2018-03-30 | 2018-03-30 | Body strain gauge righting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108333631B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100074A (en) * | 1986-01-10 | 1987-10-21 | 河南省地震局 | String-frequency borehole strainmeter |
| CN201391245Y (en) * | 2009-04-17 | 2010-01-27 | 中国石油天然气集团公司 | Underground logging centralizer |
| CN203905848U (en) * | 2014-06-25 | 2014-10-29 | 中国石油大学(北京) | Downhole self-adaptive elastic centralizer |
| CN204225867U (en) * | 2014-09-22 | 2015-03-25 | 中国石油大学(北京) | A kind of relief well detection system Electrodes In Shallow Wells device |
| CN105486752A (en) * | 2016-01-27 | 2016-04-13 | 江苏省特种设备安全监督检验研究院 | Gas storage well shaft detection system based on ultrasonic phased array technology and detection method thereof |
| CN205484210U (en) * | 2016-01-27 | 2016-08-17 | 江苏省特种设备安全监督检验研究院 | Gas storage well pit shaft detecting system based on ultrasonic phased array technique |
| CN105928488A (en) * | 2016-06-15 | 2016-09-07 | 中国地震局地壳应力研究所 | Borehole vertical line strain gauge |
| CN207924159U (en) * | 2018-03-30 | 2018-09-28 | 中国地震局地壳应力研究所 | A kind of body strain instrument erection device |
-
2018
- 2018-03-30 CN CN201810286643.5A patent/CN108333631B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100074A (en) * | 1986-01-10 | 1987-10-21 | 河南省地震局 | String-frequency borehole strainmeter |
| CN201391245Y (en) * | 2009-04-17 | 2010-01-27 | 中国石油天然气集团公司 | Underground logging centralizer |
| CN203905848U (en) * | 2014-06-25 | 2014-10-29 | 中国石油大学(北京) | Downhole self-adaptive elastic centralizer |
| CN204225867U (en) * | 2014-09-22 | 2015-03-25 | 中国石油大学(北京) | A kind of relief well detection system Electrodes In Shallow Wells device |
| CN105486752A (en) * | 2016-01-27 | 2016-04-13 | 江苏省特种设备安全监督检验研究院 | Gas storage well shaft detection system based on ultrasonic phased array technology and detection method thereof |
| CN205484210U (en) * | 2016-01-27 | 2016-08-17 | 江苏省特种设备安全监督检验研究院 | Gas storage well pit shaft detecting system based on ultrasonic phased array technique |
| CN105928488A (en) * | 2016-06-15 | 2016-09-07 | 中国地震局地壳应力研究所 | Borehole vertical line strain gauge |
| CN207924159U (en) * | 2018-03-30 | 2018-09-28 | 中国地震局地壳应力研究所 | A kind of body strain instrument erection device |
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| Publication number | Publication date |
|---|---|
| CN108333631A (en) | 2018-07-27 |
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Country or region after: China Address after: 100085, Anning Road, Haidian District, Beijing, 1, Xisanqi Applicant after: National natural disaster prevention and Control Research Institute Ministry of emergency management Address before: 100085, Anning Road, Haidian District, Beijing, 1, Xisanqi Applicant before: THE INSTITUTE OF CRUSTAL DYNAMICS, CHINA EARTHQUAKE ADMINISTRATION Country or region before: China |
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