CN211692448U - Scale calibration device suitable for cable type natural gamma instrument - Google Patents
Scale calibration device suitable for cable type natural gamma instrument Download PDFInfo
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- CN211692448U CN211692448U CN202020086902.2U CN202020086902U CN211692448U CN 211692448 U CN211692448 U CN 211692448U CN 202020086902 U CN202020086902 U CN 202020086902U CN 211692448 U CN211692448 U CN 211692448U
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Abstract
The utility model belongs to the technical field of oil gas logging, in particular to a scale calibration device suitable for a cable type natural gamma instrument, a groove steel support and a welding slide rail are fixed on a movable platform surface through bolts; the channel steel support is fixedly provided with a high-level module and a low-level module through bolts, through holes for instruments to pass through are formed in the middle of the high-level module and the low-level module, and the high-level module and the low-level module are coaxially arranged along the axis of a central through hole; the front end of the high-level module is provided with a righting sleeve; the welding slide rail is connected with a telescopic bracket in a sliding way; the tail end of the telescopic support is provided with a lifting support, and the lifting support is connected with the V-shaped roller through a pin shaft. The utility model discloses a natural stone material compares with traditional yellow infantees, scale support, scale tile etc. as the scale radiation source, and its energy spectrum constitutes nature gamma promptly rather than simulation nature gamma, and the energy spectrum response is unanimous with real stratum, is favorable to improving measurement accuracy.
Description
Technical Field
The utility model belongs to the technical field of oil gas logging, especially, relate to a scale calibration equipment suitable for cable type nature gamma instrument.
Background
Currently, the closest prior art: both natural gamma and natural gamma energy spectral logging are methods of logging using the natural radioactivity of the rock in the formation. Natural gamma-ray logging is a method of investigating the properties of well-section strata by measuring the total radioactive intensity of rocks with a gamma-ray detector, and can be used to classify lithology and permeability layers and to determine the shale content. The natural gamma-ray spectral logging is a most basic logging method in radioactive logging, and is different from natural gamma-ray logging in that the content of uranium, thorium and potassium in a stratum can be quantitatively measured by adopting a spectral analysis method, and the total gamma-ray radioactive intensity of the stratum is given. Therefore, the natural gamma-ray spectrum logging can solve more stratum problems and plays an important role in the aspects of reservoir layer identification, shale content calculation, sedimentation environment identification, clay mineral type identification and the like.
The logging curves of the natural gamma and the natural gamma energy spectrum are all based on API as a unit, and the logging instrument needs to be regularly calibrated to obtain accurate natural gamma logging information. Calibration is the process of calibrating the tool. A three-level management system is generally implemented in a natural gamma metering standard device in China, namely a highest standard-working standard-graduator in the natural gamma industry.
The graduator is mainly used for on-site graduations of well logging, and the conventional graduator mainly comprises yellow cloth, a graduating frame, graduated tiles and the like. The interior of each of the yellow wrapping cloth and the scale tiles is provided with a mixed medium, and three radioactive mineral elements of potassium, uranium and thorium are uniformly distributed in the mixed medium. Part of the calibration frame is calibrated by using a point-shaped gamma source as a radioactive source. When the yellow wrapping cloth, the scale frame and the scale tiles are used for scaling, the measurement result is very sensitive to the position difference of the graduator, the scale coefficients are different due to different positions, and the measurement is influenced; when the measurement is carried out by using the yellow wrapping cloth, the difference of the magnitude of the API can be generated due to the elasticity of the wrapping cloth; when the scale rack and the scale tiles are used, the placing position of the graduator is slightly inaccurate, and great influence on the measurement result can be generated; meanwhile, the yellow wrapping cloth, the scale frame, the scale tiles and the like have high radioactivity and have certain harm to the human health of operators; finally, the scale calibration devices such as the yellow wrapping cloth, the scale frame and the scale tiles are generally small, and the scale calibration process is easily influenced by environmental background factors, so that the measurement is influenced.
In summary, the problems of the prior art are as follows:
(1) in the prior art, when the yellow wrapping cloth, the scale frame and the scale tiles are used for scaling, the measurement result is very sensitive to the position difference of the graduator, the scale coefficients are different due to different positions, and the measurement is influenced; when the measurement is carried out by using the yellow wrapping cloth, the difference of the magnitude of the API can be generated due to the elasticity of the wrapping cloth; when the scale rack and the scale tiles are used, the placing position of the graduator is slightly misaligned, and thus, the measuring result is possibly greatly influenced.
(2) The radioactivity of the yellow wrapping cloth, the scale frame, the scale tiles and the like is large, and certain harm is caused to the human health of operators.
(3) The scale calibration devices such as the yellow wrapping cloth, the scale frame and the scale tiles are generally small, and the scale calibration process is very easily influenced by environmental background factors, so that the measurement is influenced.
The difficulty of solving the technical problems is as follows: the structure of the device is changed, the position sensitivity of the calibration device during calibration is reduced, the repeated measurement precision is improved, the influence of the environmental background on the measurement is reduced, and the radiation hazard of the device to workers is reduced; generally, the scale device has large integral volume and is inconvenient to move due to excessive pursuit of high repeated measurement precision, environment background shielding and gamma radiation shielding protection; therefore, in order to solve the above-mentioned problems, the portability of the scale device must be considered, and strong adaptability to various fields is required.
The significance of solving the technical problems is as follows: the measuring precision of the calibration device is improved, and the measuring error is reduced; meanwhile, the radiation hazard of the calibration device to workers is reduced, so that the calibration device can be suitable for more places.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides a scale calibration equipment suitable for cable type nature gamma instrument.
The utility model is realized in such a way that the scale calibration device suitable for the cable type natural gamma instrument is provided with a movable platform, and a grooved steel support is fixed on the table surface of the movable platform through bolts; the channel steel support is fixedly provided with a high-level module and a low-level module through bolts, through holes for instruments to pass through are formed in the middle of the high-level module and the low-level module, and the high-level module and the low-level module are coaxially arranged along the axis of a central through hole; the front end of the high-level module is provided with a righting sleeve.
A welding slide rail is fixed at the middle position of the movable platform through a bolt, and the welding slide rail is connected with a telescopic bracket in a sliding manner; the tail end of the telescopic support is provided with a lifting support, and the lifting support is connected with the V-shaped roller through a pin shaft.
The device is provided with a centering sleeve, and the centering state of the instrument in the module can be ensured all the time by manufacturing centering devices with different inner diameters; by arranging the telescopic bracket and the lifting bracket, the lifting bracket can be finely adjusted according to different sizes of the scale instruments; through being provided with V type gyro wheel, make things convenient for the scale in-process to adjust instrument axial position. The device is provided with a high-level module and a low-level module which are coated by natural stone, and the volumes of the high-level module and the low-level module are larger than that of yellow wrapping cloth, a scale frame and scale tiles, so that the device has a good shielding effect on gamma rays at the background of the environment and reduces the influence of the background on the scales; and the energy spectrum composition is natural gamma instead of simulated natural gamma, so that the simulation performance is better than that of yellow wrapping cloth, a scale frame, scale tiles and the like, the energy spectrum response is consistent with that of a real stratum, and the measurement precision is improved.
The utility model discloses well module volume is great, measures the obvious increase in plateau district, greatly reduced the device to the sensitivity of position, improved the scale precision.
Further, the inside natural granite that is filled of high-voltage amplifier module, the module shell cladding has ordinary carbon steel board, offers the trompil that is used for the instrument to pass on the high-voltage amplifier module.
The inside limestone that is filled of low module of putting, the shell cladding has ordinary carbon steel board, offers the trompil that is used for the instrument to pass on the low module of putting.
The common carbon steel plate is covered on the module shell, so that the radiation of gamma rays of the module to operators can be shielded, and the personal health of the operators is protected.
Furthermore, lifting lugs are welded at the upper ends of the shells of the high-level module and the low-level module and used for hoisting the whole module.
Furthermore, the lower end of the movable platform is fixedly provided with universal wheels and fixed wheels through bolts, and the device can move integrally and has stronger adaptability to the field environment.
To sum up, the utility model discloses an advantage and positive effect do: in the utility model, the middle-high-level module and the low-level module are coaxially arranged, and the calibration operation can be completed only by moving the instrument once in the calibration process; the high-level module and the low-level module are arranged on the movable platform, so that the device can integrally move and has stronger adaptability to the field environment;
the utility model discloses well high-voltage module is inside to be filled with natural granite, makes the module with natural stone material, and more than yellow infantees, scale frame, scale tile isovolumic great, has good shielding effect to environment background gamma ray, has reduced the influence of background to the scale; and the energy spectrum composition is natural gamma instead of simulated natural gamma, so that the simulation performance is better than that of yellow wrapping cloth, a scale frame, scale tiles and the like, and the energy spectrum response is consistent with that of a real stratum. Meanwhile, the volume of the module in the utility model is larger, the measuring plateau area is obviously enlarged, the sensitivity of the device to the position is greatly reduced, and the scale precision is improved; the outer layer of the module is coated with a layer of carbon steel plate, so that the irradiation of gamma rays of the module to operators can be shielded, and the personal health of the operators is protected.
Drawings
Fig. 1 is a scale calibration device schematic diagram suitable for cable type gamma logging instrument that the embodiment of the utility model provides.
Fig. 2 is a schematic diagram of a non-operating state structure of the scale calibration apparatus provided by the embodiment of the present invention.
Fig. 3 is a schematic diagram of a working state structure of the scale calibration apparatus provided by the embodiment of the present invention.
Fig. 4 is a schematic diagram of a high-scale state structure of the scale calibration apparatus provided by the embodiment of the present invention.
Fig. 5 is a schematic diagram of a low-scale state structure of the scale calibration apparatus provided by the embodiment of the present invention.
In the figure: 1. a movable platform; 2. welding a bracket; 3. a channel steel support; 4. welding the sliding rail; 5. a telescoping support; 6. a lifting support; 7. a V-shaped roller; 8. a centralizing sleeve; 9. a high-level module; 10. lifting lugs; 11. and a low amplifier module.
Detailed Description
In order to further understand the contents, features and functions of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
To the problem that prior art exists, the utility model provides a scale calibration equipment suitable for cable type nature gamma instrument, it is right to combine the attached drawing below the utility model discloses do detailed description.
As shown in fig. 1, the scale calibration device suitable for the cable-type natural gamma instrument provided by the embodiment of the present invention is provided with a movable platform 1, a universal wheel and a fixed wheel are fixed at the lower end of the movable platform 1 through bolts, a channel steel support 3 is fixed on the table top of the movable platform 1 through bolts, a welding support 2 is welded on the module housing, and the welding support 2 is connected with the channel steel support 3 through bolts; a high-level module 9 and a low-level module 11 are fixed on the channel steel support 3 through bolts, a through hole for an instrument to pass through is formed in the middle of the high-level module 9 and the low-level module 11, and the modules are coaxially arranged along the axis of the through hole.
A welding slide rail 4 is fixed in the middle of the movable platform 1 through bolts, and the welding slide rail 4 is connected with a telescopic bracket 5 in a sliding manner; the upper end of the telescopic bracket 5 is provided with a lifting bracket 6, and the lifting bracket 6 is connected with a V-shaped roller 7 through a pin shaft.
Preferably, natural granite is filled in the high-level module 9, and the shell of the high-level module 9 is coated with a common carbon steel plate; the external dimension of the high-power module 9 is square (400mmX400mmX400 mm); the high-level module 9 is provided with an opening for the instrument to pass through.
Preferably, the thickness of the shell of the high-level module 9 can be selected from 5mm to 20mm according to different required shielding protection capabilities.
Preferably, the interior 11 of the low-level module is filled with limestone, and the shell is coated with a common carbon steel plate; the low module has a square shape (400mmX400mmX400mm), and an opening for the instrument to pass through is formed in the low module.
Preferably, the telescopic bracket 5 is provided with 60X60 square steel and a lifting bracket 6, and the square steel can move in a sliding rail; according to the different sizes of the scale instruments, the lifting support can be finely adjusted.
Preferably, the centering sleeve 8 can be manufactured into different inner diameters according to different outer diameters of required scale instruments, and the instrument is always in a centered state in the module.
Preferably, the opening of the module is 105mm, and the centering sleeve 8 is made of nylon and is suitable for instruments with the outer diameter less than 105 mm.
Preferably, the lifting lugs 10 are used for lifting the whole module, and the high-level module 9 and the low-level module 11 are fixed through the channel steel support 3.
Preferably, the V-shaped roller 7 is convenient for adjusting the axial position of the instrument in the calibration process.
The utility model discloses a theory of operation does: determining the center position of the instrument detector in the instrument, and marking the instrument shell 200mm and 600mm away from the center point by using a paint pen; the telescopic bracket 5 of the scale device is pulled out to a proper length; installing a centralizing sleeve 8; the instrument is plugged into the scale module hole, the 200mm mark is flush with the end face of the centering sleeve 8, the lifting support is adjusted to a proper position, the instrument is ensured to be centered in the module, and the high-level scale preparation work is completed; the instrument is electrified, and the counting of the detector is recorded according to the scale requirement; completing the scaling of the high-level module 9 and preparing for low-level scaling; pushing the instrument inwards to enable the 600mm mark to be complete with the end face of the centering sleeve 8, and preparing to perform low scale; recording the detector count according to the scale requirement; completing low-level scaling; and (4) finishing the instrument calibration, and taking the instrument out of the calibration module.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.
Claims (2)
1. The utility model provides a scale verifying unit suitable for cable type nature gamma instrument, its characterized in that, scale verifying unit is provided with:
a movable platform;
a grooved steel support and a welded sliding rail are fixed on the table top of the movable platform through bolts; the channel steel support is fixedly provided with a high-level module and a low-level module through bolts, the high-level module and the low-level module are coaxially arranged, and the front end of the high-level module is provided with a centering sleeve;
the welding slide rail is connected with a telescopic bracket in a sliding way; the tail end of the telescopic support is provided with a lifting support, and the lifting support is connected with the V-shaped roller through a pin shaft.
2. The calibration verification device suitable for the cable-type natural gamma instrument according to claim 1, wherein the high-level module is filled with natural granite, and a shell of the high-level module is coated with a common carbon steel plate;
the interior of the low-voltage module is filled with limestone, and the shell is coated with a common carbon steel plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020086902.2U CN211692448U (en) | 2020-01-15 | 2020-01-15 | Scale calibration device suitable for cable type natural gamma instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020086902.2U CN211692448U (en) | 2020-01-15 | 2020-01-15 | Scale calibration device suitable for cable type natural gamma instrument |
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| CN211692448U true CN211692448U (en) | 2020-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002756A (en) * | 2021-12-07 | 2022-02-01 | 中国煤炭地质总局一二九勘探队 | Automatic scale device of neutron probe |
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2020
- 2020-01-15 CN CN202020086902.2U patent/CN211692448U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002756A (en) * | 2021-12-07 | 2022-02-01 | 中国煤炭地质总局一二九勘探队 | Automatic scale device of neutron probe |
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