CN113622836B - Centralizer suitable for strong appearance that shakes in pit - Google Patents
Centralizer suitable for strong appearance that shakes in pit Download PDFInfo
- Publication number
- CN113622836B CN113622836B CN202110924088.6A CN202110924088A CN113622836B CN 113622836 B CN113622836 B CN 113622836B CN 202110924088 A CN202110924088 A CN 202110924088A CN 113622836 B CN113622836 B CN 113622836B
- Authority
- CN
- China
- Prior art keywords
- seismograph
- downhole
- centralizer
- underground
- top plate
- 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.)
- Active
Links
- 230000011664 signaling Effects 0.000 claims abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000019771 cognition Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
- E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Mechanical Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model provides a centralizer suitable for macroseism appearance in pit, include: the device comprises a top plate, a plurality of angle adjusting assemblies, an inclinometer and a controller; the angle adjusting assembly is positioned between the top plate and the underground strong seismograph and comprises a support and a driving part for adjusting the angle of the support; the inclinometer is rigidly connected with the underground strong seismograph and is used for measuring inclination angle signals of the underground strong seismograph; the controller is used for receiving the inclination angle signal and controlling the driving part through the inclination angle signal to adjust the angle of the supporting part, so that the underground strong vibration instrument is in a vertical state. The method can accurately judge the inclination condition of the underground strong seismograph and perform centralization, and improves the measurement accuracy of the underground strong seismograph.
Description
Technical Field
The utility model relates to an engineering macroseism measures the field, in particular to centralizer suitable for strong seismograph in pit.
Background
The strong earthquake observation is an effective way for deepening the scientific cognition of the earthquake, and the underground strong earthquake measurement has important significance for recognizing the field amplification effect of earthquake motion. At present, mature underground strong shock measuring equipment, namely an underground strong shock instrument, is available. An important factor in the strong earthquake measurement is that three earthquake motion components of east-west, north-south and vertical are accurately measured, and the accurate measurement of the three-component earthquake motion has important significance for the analysis of the regional attenuation relation of the earthquake motion, the analysis of the earthquake motion field effect caused by topographic geological conditions, the analysis of earthquake seismographic phase and the like. To achieve accurate measurement of three-component seismic motion, accurate horizontal orientation and vertical righting of the seismograph (ensuring that the inclination of the device is zero) must be achieved.
The underground strong seismograph is an instrument used for measuring underground seismic acceleration in an earthquake and mainly has the function of obtaining the deep underground seismic distribution rule. By utilizing the comparison of the underground strong seismograph and the earth surface strong seismograph, the method is favorable for understanding the amplification or reduction effect of different topographic and geological conditions on seismic oscillation, and is favorable for improving the understanding of the seismic distribution rule under the complex geological conditions. A key problem in the installation and use of the existing underground strong seismograph is how to realize the accurate righting of the strong seismograph, if the accurate righting cannot be realized (namely the strong seismograph has an inclination angle with the vertical direction), the measured three-component seismic motion is not the three components of east-west-south-north-vertical, and the result cannot be compared with the result of the earth surface strong seismograph. The scheme adopted at present is to strictly limit the hole inclination and the hole diameter of a drilling well for installing the strong seismograph, so that the inclination angle of the strong seismograph is in a smaller range (less than 3 degrees) by limiting the hole inclination and the hole diameter, and the measurement error caused by a small inclination angle is ignored. However, the measurement error of the method still has great influence on high-precision seismic motion analysis and cannot be ignored. The limitation on the hole inclination and the hole diameter also can seriously affect the applicability of the underground strong seismograph, the underground strong seismograph cannot be effectively installed and used in regions with complicated geological conditions and large drilling capacity limitation, and the limitation on the increase of the cognition on the seismic motion distribution rule under the complicated geological and topographic conditions is serious.
Disclosure of Invention
The present disclosure is directed to solving one of the problems set forth above.
Therefore, the utility model provides an accessible inclination control realizes rightting the macroseism appearance in the pit to guarantee the centralizer of seismograph high accuracy measurement in the pit, include:
the top plate is positioned above the underground strong seismograph;
the angle adjusting components are uniformly distributed between the top plate and the underground strong vibration instrument along the circumferential direction of the top plate; the angle adjusting assembly comprises a support and a driving part for adjusting the angle of the support, and the bottom end of the support is rigidly connected with the downhole seismograph;
the inclinometer is rigidly connected with the underground strong seismograph and used for measuring inclination angle signals of the underground strong seismograph; and
the controller is electrically connected with the inclinometer and each driving part and used for receiving the inclination angle signal and controlling the driving parts through the inclination angle signal to adjust the angle of the supporting piece, so that the underground seismograph is in a vertical state.
The centralizer suitable for strong seismograph in pit that this is disclosed has following characteristics and beneficial effect:
the centralizer suitable for the underground strong seismograph provided by the disclosure utilizes the driving part to control the angle of the supporting part, and adjusts the inclination degree of the underground strong seismograph and the centralizer through the change of the angle of the supporting part. And the reading of the inclinometer is utilized to continuously reduce the inclination angle of the underground strong seismograph, and finally, the underground strong seismograph is accurately righted. Because the centralizer suitable for the underground strong seismograph is rigidly connected to the upper part of the underground strong seismograph, the inclination condition of the underground strong seismograph can be accurately judged and centralization can be carried out, the measurement of the underground strong seismograph cannot be influenced, and the underground strong seismograph can be accurately centralized.
In some embodiments, the driving member is fixedly connected to the top plate, and the driving member has an output end connected to a top end of the support.
In some embodiments, the driving part controls the support to move in a radial direction of the top plate.
In some embodiments, the support member includes a plurality of rods pivotally connected to each other, a top end of the rod located at the uppermost position is connected to the output end of the driving member, and a bottom end of the rod located at the lowermost position is rigidly connected to the downhole seismograph.
In some embodiments, during lowering of the downhole seismograph, each of the supports is in a straightened state.
In some embodiments, each of the supports is in an open state when the downhole seismograph reaches the bottom of the borehole.
In some embodiments, during lowering of the downhole seismograph, the outer diameter of the centralizer does not exceed the outer diameter of the downhole seismograph; the centralizer has an outer diameter between the outer diameter of the downhole seismograph and the inner diameter of the borehole when the downhole seismograph reaches the bottom of the borehole.
Drawings
Fig. 1 is a schematic overall structural diagram of a centralizer suitable for a downhole seismograph according to an embodiment of the present disclosure;
fig. 2 (a), (b), and (c) the present disclosure provides a schematic diagram of a centralizer for a downhole tool during a downhole process, where (a) is a schematic diagram of a state of the centralizer and the downhole tool during a downhole stage, (b) is a schematic diagram of a state of the centralizer and the downhole tool during the centralization process, and (c) is a schematic diagram of a state of the centralizer and the downhole tool after the centralization.
Reference numerals:
1: top plate, 2: angle adjustment assembly, 21: support, 22: drive member, 3: inclinometer, 4: controller, 5: connecting piece, 6: downhole seismograph, 7: and (6) drilling.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
On the contrary, this application is intended to cover any alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the application as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present application. It will be apparent to one skilled in the art that the present application may be practiced without these specific details.
Referring to fig. 1, the centralizer suitable for borehole strong seismograph that this disclosed embodiment provided sets up in the top of borehole strong seismograph, includes:
the top plate 1 is positioned above the underground strong seismograph 6;
the angle adjusting components 2 are uniformly distributed on the top plate 1 along the circumferential direction of the top plate 1; each angle adjusting component 2 comprises a supporting piece 21 and a driving part 22 for adjusting the angle of the supporting piece 21, and the bottom end of the supporting piece 21 is rigidly connected with the downhole strong vibration instrument 6;
the inclinometer 3 is rigidly connected with the underground strong seismograph 6 and used for measuring inclination angle signals of the underground strong seismograph 6; and
and the controller 4 is electrically connected with the inclinometer 3 and each driving part 22 and is used for receiving an inclination angle signal measured by the inclinometer 3, and controlling the driving part 22 through the inclination angle signal to adjust the angle of the support 21 so that the downhole seismograph 6 is in a vertical state.
In some embodiments, the top plate 1 is a flat plate with a certain thickness as a base for mounting the angle adjusting assembly 2, and the driving member 22 is uniformly mounted on the top plate 1, for example, fixed to the upper surface of the top plate 1, or fixed to the side surface or the bottom surface of the top plate 1.
In some embodiments, each driving part 22 in the angle adjusting assembly 2 employs a driving motor, an output end of each driving motor is connected to a top end of a corresponding one of the supporting members 21, and an included angle of an axial direction of the corresponding supporting member 21 with respect to a vertical plane can be changed by the driving part 22, so as to change an included angle of the downhole seismograph 6 with respect to a plumb plane. Specifically, the driving member 22 may drive the top end of the supporting member 21 to move in the radial direction of the top plate 1, or the driving member 22 may rotate the top end of the supporting member 21 without changing the position of the top end of the supporting member 21 in the radial direction of the top plate 1.
In some embodiments, each of the supporting members 21 in the angle adjusting assembly 2 has the same structure and includes a plurality of rods 211 pivotally connected to each other, and the bottom end of the rod located at the bottom is rigidly connected to the top of the downhole seismograph 6 through a connecting member 5, specifically, one end of the connecting member 5 is pivotally connected to the bottom end of the rod located at the bottom, and the other end of the connecting member 5 is rigidly connected to the downhole seismograph 6.
In some embodiments, the inclinometer 3 is rigidly connected with the downhole seismograph 6 through the connecting piece 5, so that the measurement of the inclination angle of the downhole seismograph can be realized. The measured inclination angle is transmitted to the controller 4 on the ground through a cable, the inclination degree and the direction of the downhole seismograph 6 are judged according to the inclination angle condition, and then the controller 4 adjusts the opening degree of the support piece 21 through the driving part 22, so that the centralizing effect is achieved.
In some embodiments, in order to ensure that the centralizer of the embodiments of the present disclosure meets the installation requirement of drilling (the diameter of a drilled well where the centralizer is suitable for installation is 90mm to 250mm), when the downhole strong vibration instrument 6 is in the downhole installation stage, the outer diameter of the whole centralizer does not exceed the outer diameter of the downhole strong vibration instrument 6, and the outer diameter of the downhole strong vibration instrument is 70 mm to 110 mm; when the downhole seismograph 6 reaches a specified depth, the angle of each support 21 is adjusted to centralise the downhole seismograph 6, at which stage the outer diameter of the overall centraliser is between the outer diameter of the downhole seismograph 6 and the inner diameter of the borehole 7.
The working process of the centralizer disclosed by the embodiment of the disclosure is as follows:
referring to fig. 2 (a), in the descending stage of the downhole strong seismograph 6, each support 21 is in a straight state (i.e. an initial state) under the action of the gravity of the downhole strong seismograph 6, and the maximum outer diameter of the whole centralizer is 90mm and is consistent with the outer diameter of the downhole strong seismograph 6, so that a drilled well with the diameter larger than 90mm can be smoothly put down. The process can be realized only by the self gravity of the underground strong vibration instrument 6 without any electronic control equipment, and the operation is simple and the reliability is high.
When the underground strong seismograph 6 reaches the bottom of the well 7 and contacts with rock or sandy soil at the bottom of the well, because the gravity of the underground strong seismograph 6 is offset with the supporting force at the bottom of the well, each supporting piece 21 extends outwards under the action of the top plate 1 and the gravity of the supporting piece, so that the outer diameter of the whole centralizer is increased until each supporting piece 21 is expanded to be consistent with the diameter of the well, and at the moment, each supporting piece 21 is supported on the wall of the well to play a role in fixing the underground strong seismograph 6. However, since the borehole wall may have a certain inclination and is not completely vertical, the downhole seismograph 6 may have a certain inclination and is not vertical.
Because the downhole strong seismograph 6 has a certain inclination angle, the inclination state of the downhole strong seismograph 6 needs to be further adjusted to realize accurate underground righting. Firstly, the controller reads the reading of the inclinometer 3, adjusts the driving motor according to the reading of the inclinometer 3, and controls the opening of the corresponding support piece 21 to change, thereby reducing the inclination angle of the downhole seismograph 6. Such as: referring to fig. 2 (b), when the readings of the inclinometer 3 show that the downhole seismograph 6 inclines to the right (the left side is high and the right side is low), the opening degree of the left side supporting piece is increased and the opening degree of the right side supporting piece is reduced through the driving motor, and the readings of the inclination angles in the left and right directions can be zero through slow adjustment. By repeatedly reading the readings of the inclinometer and controlling the opening of the supporting piece by using the driving motor, the readings in two directions of the inclinometer can be zero, and at the moment, the accurate righting of the underground strong seismograph 6 is realized, which is shown in (c) of fig. 2.
In summary, the centralizer suitable for the downhole strong vibration instrument provided by the embodiment of the disclosure can accurately judge the inclination condition of the downhole strong vibration instrument, and utilize the driving part to control the opening degree of the supporting piece to centralize the downhole strong vibration instrument, and cannot influence the measurement of the downhole strong vibration instrument, thereby finally realizing the accurate centralization of the downhole strong vibration instrument.
Claims (5)
1. A centralizer suitable for a downhole seismograph, comprising:
the top plate is positioned above the underground strong seismograph;
the angle adjusting components are uniformly distributed between the top plate and the underground strong vibration instrument along the circumferential direction of the top plate; the angle adjusting assembly comprises a supporting piece and a driving part used for adjusting the angle of the supporting piece, the driving part is fixedly connected with the top plate, the driving part is provided with an output end, the output end is connected with the top end of the supporting piece, the bottom end of the supporting piece is rigidly connected with the underground strong vibration instrument, the supporting piece comprises a plurality of rod pieces which are pivoted, the top end of the rod piece positioned at the uppermost position is connected with the output end of the driving part, and the bottom end of the rod piece positioned at the lowermost position is rigidly connected with the underground strong vibration instrument;
the inclinometer is rigidly connected with the underground strong seismograph and used for measuring inclination angle signals of the underground strong seismograph; and
the controller is electrically connected with the inclinometer and each driving part and used for receiving the inclination angle signal and controlling the driving parts through the inclination angle signal to adjust the angle of the supporting piece, so that the underground seismograph is in a vertical state.
2. The centralizer of claim 1, wherein the drive member controls movement of the support in a radial direction of the top plate.
3. The centralizer of claim 1, wherein each support is in a straightened state during lowering of the downhole seismograph.
4. The centralizer of claim 1, wherein each of the supports is in an expanded state when the downhole seismograph reaches the bottom of the borehole.
5. A centralizer as claimed in any one of claims 1 to 4 wherein during descent of the downhole seismograph, the outer diameter of the centralizer does not exceed the outer diameter of the downhole seismograph; the centralizer has an outer diameter between the outer diameter of the downhole seismograph and the inner diameter of the borehole when the downhole seismograph reaches the bottom of the borehole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110924088.6A CN113622836B (en) | 2021-08-12 | 2021-08-12 | Centralizer suitable for strong appearance that shakes in pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110924088.6A CN113622836B (en) | 2021-08-12 | 2021-08-12 | Centralizer suitable for strong appearance that shakes in pit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113622836A CN113622836A (en) | 2021-11-09 |
| CN113622836B true CN113622836B (en) | 2022-08-16 |
Family
ID=78384827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110924088.6A Active CN113622836B (en) | 2021-08-12 | 2021-08-12 | Centralizer suitable for strong appearance that shakes in pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113622836B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2361488B (en) * | 2000-04-20 | 2004-05-26 | Sondex Ltd | Roller centralizer for wireline tools |
| US6920936B2 (en) * | 2002-03-13 | 2005-07-26 | Schlumberger Technology Corporation | Constant force actuator |
| CN102493801B (en) * | 2011-12-28 | 2015-01-21 | 中国石油天然气股份有限公司 | Full hole multiprobe oil gas flow measurement device |
| US9611705B2 (en) * | 2013-10-11 | 2017-04-04 | Antelope Oil Tool & Mfg. Co. | Centralizer preconditioning and testing apparatus and method |
| CN210564401U (en) * | 2019-08-31 | 2020-05-19 | 新汶矿业集团地质勘探有限责任公司 | Novel probe tube lower righting device for reducing drilling well logging |
-
2021
- 2021-08-12 CN CN202110924088.6A patent/CN113622836B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113622836A (en) | 2021-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7942204B2 (en) | Method and apparatus for rescaling measurements while drilling in different environments | |
| JP2010271324A (en) | Method and system for seismic signal detection | |
| CN111878068B (en) | High-temperature solid-state resonance gyroscope and drilling measurement system composed of same | |
| CN110186442B (en) | Drilling directional measurement device and method fixed on drilling machine | |
| CN114076587B (en) | Ground subsidence monitoring device for tunnel construction and detection method thereof | |
| CN113622836B (en) | Centralizer suitable for strong appearance that shakes in pit | |
| CN216110679U (en) | Stabilizer suitable for strong appearance that shakes in pit | |
| CN208310756U (en) | A kind of bore inclining gage probe | |
| CN219365935U (en) | Geological survey drilling device | |
| RU2066749C1 (en) | Method for determination of wellbore inclination and direction of cased well | |
| CN216360996U (en) | Cylindrical drilling clinometer | |
| CN107340535B (en) | Two-part type underground sensor horizontal adjusting device | |
| CN214408147U (en) | Portable geological survey is with drilling sampling device | |
| CN109655923A (en) | A kind of measuring electrode wall built-up directed fixing device and its measurement method | |
| JP2644963B2 (en) | Measuring device for inner surface of anchor hole | |
| AU2015387501A1 (en) | Geophone with magnetic self-damping system | |
| CN204666824U (en) | Down-hole broadband seismometer level is divided to levelling gear | |
| WO2019190504A1 (en) | In-situ calibration of borehole gravimeters | |
| CN214276884U (en) | Novel inclinometer integrating inclinometry, torsion measurement and torsion measurement | |
| CN108344535B (en) | Horizontal effective ground stress test method and test device considering drilling fluid pressure | |
| CN112098140A (en) | Geological exploration equipment and exploration method thereof | |
| CN219265740U (en) | Geological exploration sampling device | |
| CN221169499U (en) | Righting device for geological geophysical prospecting logging instrument | |
| CN107905751B (en) | Underground mechanical coupling positioning device | |
| CN220302118U (en) | High-efficient position gamma detects nipple joint with shockproof effect |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |