CN114017012B - Calibration device for underground bit pressure torque measurement nipple - Google Patents

Calibration device for underground bit pressure torque measurement nipple Download PDF

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Publication number
CN114017012B
CN114017012B CN202111273682.XA CN202111273682A CN114017012B CN 114017012 B CN114017012 B CN 114017012B CN 202111273682 A CN202111273682 A CN 202111273682A CN 114017012 B CN114017012 B CN 114017012B
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China
Prior art keywords
support
short section
nipple
worm
lead screw
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CN202111273682.XA
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Chinese (zh)
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CN114017012A (en
Inventor
黄崇君
李雷
张继川
陆灯云
白璟
谢意
李枝林
贾利春
周长虹
范黎明
杨晓峰
何超
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China National Petroleum Corp
CNPC Chuanqing Drilling Engineering Co Ltd
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China National Petroleum Corp
CNPC Chuanqing Drilling Engineering Co Ltd
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Priority to CN202111273682.XA priority Critical patent/CN114017012B/en
Publication of CN114017012A publication Critical patent/CN114017012A/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/06Measuring temperature or pressure
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B44/00Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • E21B44/02Automatic control of the tool feed
    • E21B44/04Automatic control of the tool feed in response to the torque of the drive ; Measuring drilling torque
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B44/00Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • E21B44/02Automatic control of the tool feed
    • E21B44/06Automatic control of the tool feed in response to the flow or pressure of the motive fluid of the drive
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells

Abstract

The invention discloses a calibration device for a downhole bit pressure torque measurement nipple, which belongs to the technical field of downhole drilling engineering, and comprises a base, and is characterized in that: the short section fixing support is connected with a short section fixing head, a measuring short section is arranged between the short section fixing support and the short section righting support, a short section conversion head is connected onto the measuring short section, a lead screw is arranged between the lead screw support and the short section righting support, one end of the lead screw is connected with a variable connecting sleeve, a worm gear shaft is arranged between the worm gear support and the lead screw support, a worm gear is installed on the worm gear shaft, one end of the worm gear shaft is connected with a transmission connecting sleeve, the other end of the lead screw is installed on the worm gear support, the other end of the lead screw is connected with the transmission connecting sleeve, one end of the worm is connected with a clutch, and the other end of the worm is connected with a reel. The invention adopts full mechanical structure transmission, has two modes of weight calibration and quick calibration, and can correct the calibration device through weight calibration, thereby improving the calibration precision and the calibration efficiency.

Description

Calibration device for measuring nipple joint of underground drilling pressure and torque
Technical Field
The invention relates to the technical field of underground while-drilling engineering, in particular to a calibration device for an underground bit pressure and torque measurement nipple.
Background
Along with the continuous deepening of petroleum exploration and development, oil and gas field exploitation develops towards the directions of low-pressure hypotonic and special position stratum, deep layer and thin layer, deep wells, ultra-deep wells and small well bores are more and more, the underground working conditions are more and more complex, the underground working conditions are only dependent on a ground logging sensor, the real drilling working conditions of the well bottom cannot be reflected in time, the premonition of the underground complex conditions cannot be found and correctly processed in time, the underground working conditions need to be accurately mastered, and usually, engineering parameters are measured in real time by utilizing engineering parameter measuring short joints.
The underground engineering parameter measuring nipple is mainly used for measuring underground drilling pressure and torque by forming a bridge through a strain gauge and converting the strain of a drill collar into an electric signal so as to obtain the drilling pressure and the torque at the bottom of a well. After the underground engineering parameter measuring nipple is used for a certain time, the measured electric signal and the real stress can drift, so that the measurement of the bit pressure and the torque is inaccurate, and the calibration of the bit pressure and the torque becomes very important.
The Chinese patent document with the publication number of CN 1948708 and the publication number of 2020, 07, 28 discloses a bit pressure and torque calibration test device and a calibration method, the method adopts the lever principle to calibrate, the load is applied by the combination of a force arm with a fixed length and weights with the weight/number capable of being increased and decreased, the calibration process of the engineering parameter measurement short joint is realized, and the calibration method is simple. The problems with this measuring device are:
1. static loading and unloading calibration can be realized only, and the measured bit weight torque is a discrete point and cannot reflect the dynamic response characteristic of the measuring short section;
2. the amplification factor of the force is limited by adopting the lever principle, if the bit pressure of 30 tons needs to be calibrated, the length ratio of the force arm is 10, the weight of the weight reaches 3 tons, the weight of the weight is reduced by continuously increasing the length of the force arm, and the longer force arm is easy to deform, so that the calibration precision is influenced, and meanwhile, the weight with large mass is inconvenient to carry.
Chinese patent publication No. CN 211452821U, published as 2020, 09/08/h, discloses a device for calibrating drilling pressure and torque of a downhole drilling tool, which comprises a transmission shaft and a hydraulic motor, and is characterized in that the hydraulic motor, a magnetic powder brake and a pressure torquer are sequentially fixed on an installation base provided with pulleys, a hydraulic cylinder is fixed in a hydraulic cylinder fixing base, a piston rod of the hydraulic cylinder is connected with an end plate of the installation base, and a drilling tool to be tested is fixed on a testing drilling tool base through a fixing clamp; the hydraulic motor, the magnetic powder brake, the pressure torquemeter and the measured drilling tool are all connected through the transmission shaft and the coupler, and the pressure sensor is arranged between the measured drilling tool and the transmission shaft.
The calibration device for the drilling pressure and the torque of the underground drilling tool disclosed by the patent document can expose the technical hidden danger of the drilling tool before underground construction, improve the success rate of well repair or well drilling, and avoid the loss caused by the success rate. However, the calibration device consists of a hydraulic system and a sensor, and the calibration device is prone to generate errors after the hydraulic system and the sensor are used for a long time, so that the calibration precision of the measuring short section is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a calibration device for a downhole bit pressure torque measurement nipple.
The invention is realized by the following technical scheme:
the utility model provides a calibration device of pressure-on-bit torque measurement nipple joint in pit, includes the base, its characterized in that: the base is fixedly connected with a short section fixing support, a short section righting support, a screw support, a worm wheel support, a worm support and a motor support, the short section fixing support is connected with a short section fixing head, a measuring short section is arranged between the short section fixing support and the short section righting support, a short section conversion head is connected with the measuring short section, a screw is arranged between the screw support and the short section righting support, the screw is connected onto the screw support through threads, one end of the screw is connected with a variable connecting sleeve, the short section conversion head is connected with the variable connecting sleeve, a worm wheel shaft is arranged between the worm wheel support and the screw support, a worm wheel is arranged on the worm wheel shaft, one end of the worm wheel shaft is connected with a transmission connecting sleeve, the other end of the worm wheel shaft is arranged on the worm wheel support, the other end of the screw is connected with the transmission connecting sleeve, and a worm matched with the worm wheel is arranged on the worm support, the motor support is fixed with a motor, the motor is connected with a clutch, one end of the worm is connected with the clutch, the other end of the worm is connected with a reel, two steel wire ropes in opposite directions are wound on the reel, and the steel wire ropes are connected with a loading weight tray and an unloading weight tray.
One end of the measuring short section penetrates through the short section righting support, the other end of the measuring short section is connected with the short section fixing head, and the measuring short section moves axially and rotates circumferentially in the short section righting support.
And the clutch is used for disconnecting when the weight is loaded or unloaded and combining when the motor is loaded and unloaded.
The dial is installed on the reel, and the worm support is provided with scale marks for observing the rotation angle of the worm wheel.
The base is provided with a connecting groove, and the short section fixing support, the short section righting support, the screw rod support, the worm wheel support, the worm support and the motor support are fixed on the base through the connecting groove.
The measuring nipple is provided with a threaded buckle, the nipple fixing head is provided with a female buckle, and the measuring nipple is connected with the female buckle of the nipple fixing head through the threaded buckle.
And a male buckle is arranged on the short section conversion head, and the measuring short section is connected with the male buckle of the short section conversion head through a thread buckle.
The loading weight tray and the unloading weight tray are the same in size. The diameter of the measuring nipple is larger than that of the lead screw.
The base is cuboid.
The working principle of the invention is as follows:
when the bit pressure calibration is carried out, the measuring nipple is only stressed and is not affected by torque, after the calibration device is connected, weights are not placed on the unloading scale tray, the weights are gradually added on the loading scale tray, the reel rotates anticlockwise to drive the worm shaft and the worm gear to rotate, the worm gear shaft transmits torque to the screw rod through the transmission connecting sleeve, the screw rod transmits pressure to the nipple conversion head through the variable connecting sleeve, and axial pressure is applied to the measuring nipple; the moment is amplified through the large reduction ratio of the worm gear and the worm, and the application of large axial force is realized; in the unloading process, weights are added on the unloading weight tray, and meanwhile, the weights on the loading weight tray are reduced, so that the screw rod and the worm gear rotate reversely, and the axial load on the measuring nipple is continuously reduced.
When torque calibration is carried out, the measuring short section is only acted by torque and is not acted by pressure; after the calibration device is connected, when torque is loaded, the same principle as the transmission process of bit pressure loading is carried out, weights are not placed on the unloading scale tray, the weights are gradually added on the loading scale tray, the reel rotates anticlockwise to drive the worm shaft and the worm gear to rotate, the worm gear shaft transmits torque to the screw rod through the transmission connecting sleeve, the screw rod transmits the torque to the nipple conversion head through the variable connecting sleeve, and in the torque transmission process, the screw rod rotates to apply torque to the variable connecting sleeve, the nipple conversion head and the measuring nipple, but axial load cannot be applied to the measuring nipple, so that independent loading of the torque is realized; in the unloading process, weights are added on the unloading weight tray, and meanwhile, the weights on the loading weight tray are reduced, so that the screw rod and the worm gear rotate in the reverse direction, and the axial load on the measuring nipple is continuously reduced.
Through the loading process, the actual load loaded on the measuring nipple can be calculated by utilizing the weight of the weight and the conversion of the transmission ratio, and the calibration of the measuring nipple is realized. On the other hand, the positions of the dial scales under different loads are recorded, the worm shaft can be driven by the motor to rotate to the same position, and the quick loading and unloading of the measuring nipple are achieved.
The beneficial effects of the invention are mainly shown in the following aspects:
1. the invention is characterized in that a short section fixing support, a short section righting support, a screw support, a worm wheel support, a worm support and a motor support are fixedly connected to a base, a short section fixing head is connected to the short section fixing support, a measuring short section is arranged between the short section fixing support and the short section righting support, a short section conversion head is connected to the measuring short section, a screw is arranged between the screw support and the short section righting support, the screw is connected to the screw support through threads, one end of the screw is connected with a variable connecting sleeve, the short section conversion head is connected with the variable connecting sleeve, a worm wheel shaft is arranged between the worm wheel support and the screw support, a worm wheel is arranged on the worm wheel shaft, one end of the worm wheel shaft is connected with a transmission connecting sleeve, the other end of the worm wheel shaft is arranged on the worm wheel support, the other end of the screw is connected with the transmission connecting sleeve, a worm matched with the worm wheel is arranged on the worm support, and a motor is fixed on the motor support, the motor is connected with a clutch, one end of the worm is connected with the clutch, the other end of the worm is connected with a reel, two steel wire ropes in opposite directions are wound on the reel, the steel wire ropes are connected with a loading scale tray and an unloading scale tray, the full-mechanical-structure transmission mode is adopted, two modes of weight calibration and quick calibration are provided, the calibration device can be calibrated and corrected through the weight calibration, and the calibration precision and the calibration efficiency are improved.
2. According to the invention, the worm gear transmission mechanism is used for reducing speed, so that high transmission ratio is realized, the torque is amplified, large bit pressure and torque calibration can be realized by using smaller force, and the precision of the calibration device is improved.
3. According to the invention, the gradual loading and unloading of the micro load can be realized by using the worm gear mechanism, so that the control precision is greatly improved.
4. According to the invention, after weight calibration, the motor can be used for fast loading and unloading without repeatedly increasing or decreasing weights, so that the whole calibration operation is more convenient, and the calibration efficiency is improved.
5. According to the invention, the whole calibration device realizes the conversion of transmitted bit pressure and torque by using a clutch principle, amplifies axial thrust by using the lead screw mechanism, amplifies torque by using the worm gear mechanism, establishes a relation by using the rotation angle of the dial on the worm gear and the weight of the weight, calibrates the test device by the weight, and then drives the worm to rotate by using the motor, so that the calibration efficiency can be improved, and the calibration precision can be improved.
6. The invention can be used for applying dynamic bit pressure and torque to the measuring nipple and testing the dynamic response characteristic of the strain sensor when the gauge is not calibrated.
7. According to the invention, the screw rod mechanism and the worm gear mechanism are organically combined, so that the pressure and the torque can be amplified, and further, the large bit pressure and the large torque output can be realized.
8. According to the invention, the weights are firstly used for accurate calibration, then the weights and the dial are used, the motor provides power to quickly calibrate the measuring short section, and the control precision can be effectively ensured.
9. According to the invention, through the variable connecting sleeve and the nipple conversion head, the conversion of axial force transmission and torque transmission between the screw rod and the measuring nipple is realized, and further the independent calibration of the bit pressure and the torque can be realized.
Drawings
The invention will be further described in detail with reference to the drawings and the following detailed description, in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a sectional view A-A of FIG. 1;
fig. 3 is a schematic view of a reel according to the present invention;
the mark in the figure is: 1. the device comprises a base, 2, a support fixing bolt, 3, a nipple fixing support, 4, a nipple fixing head, 5, a measuring nipple, 6, a nipple righting support, 7, a nipple conversion head, 8, a variable connecting sleeve, 10, a lead screw, 11, a lead screw support, 12, a transmission connecting sleeve, 13, a worm wheel shaft, 14, a worm wheel support, 15, a worm wheel, 16, a loading weight disc, 17, a steel wire rope, 18, a dial disc, 19, a winding wheel, 20, a worm, 21, a worm support, 22, a motor support, 23, a clutch, 24, a motor, 25 and an unloading weight disc.
Detailed Description
Example 1
Referring to fig. 1-3, a calibration device for a downhole drilling pressure torque measurement nipple comprises a base 1, wherein a nipple fixing support 3, a nipple righting support 6, a lead screw support 11, a worm gear support 14, a worm support 21 and a motor support 22 are fixedly connected to the base 1, a nipple fixing head 4 is connected to the nipple fixing support 3, a measurement nipple 5 is arranged between the nipple fixing support 3 and the nipple righting support 6, a nipple conversion head 7 is connected to the measurement nipple 5, a lead screw 10 is arranged between the lead screw support 11 and the nipple righting support 6, the lead screw 10 is connected to the lead screw support 11 through a thread, a variable connection sleeve 8 is connected to one end of the lead screw 10, the nipple conversion head 7 is connected to the variable connection sleeve 8, a worm gear shaft 13 is arranged between the worm gear support 14 and the lead screw support 11, and a worm gear 15 is arranged on the worm gear shaft 13, one end of a worm wheel shaft 13 is connected with a transmission connecting sleeve 12, the other end of the worm wheel shaft 13 is installed on a worm wheel support 14, the other end of the lead screw 10 is connected with the transmission connecting sleeve 12, a worm 20 matched with the worm wheel 15 is installed on a worm support 21, a motor 24 is fixed on a motor support 22, a clutch 23 is connected on the motor 24, one end of the worm 20 is connected with the clutch 23, the other end of the worm 20 is connected with a winding wheel 19, two steel wire ropes 17 in opposite directions are wound on the winding wheel 19, and a loading weight disc 16 and an unloading weight disc 25 are connected on the steel wire ropes 17.
The embodiment is the most basic embodiment, a short section fixing support 3, a short section righting support 6, a screw support 11, a worm gear support 14, a worm support 21 and a motor support 22 are fixedly connected to a base 1, a short section fixing head 4 is connected to the short section fixing support 3, a measuring short section 5 is arranged between the short section fixing support 3 and the short section righting support 6, a short section conversion head 7 is connected to the measuring short section 5, a screw 10 is arranged between the screw support 11 and the short section righting support 6, the screw 10 is connected to the screw support 11 through threads, one end of the screw 10 is connected with a variable connection sleeve 8, the short section conversion head 7 is connected with the variable connection sleeve 8, a worm gear shaft 13 is arranged between the worm gear support 14 and the screw support 11, a worm gear 15 is mounted on the worm gear shaft 13, one end of the worm gear shaft 13 is connected with a transmission connection sleeve 12, and the other end of the worm gear shaft 13 is mounted on the worm gear support 14, the other end of the lead screw 10 is connected with a transmission connecting sleeve 12, a worm 20 matched with the worm wheel 15 is installed on a worm support 21, a motor 24 is fixed on a motor support 22, a clutch 23 is connected on the motor 24, one end of the worm 20 is connected with the clutch 23, the other end of the worm 20 is connected with a winding wheel 19, two steel wire ropes 17 in opposite directions are wound on the winding wheel 19, a loading scale disc 16 and an unloading scale disc 25 are connected on the steel wire ropes 17, the full-mechanical-structure transmission mode is adopted, two modes of weight calibration and quick calibration are provided, and the calibration device can be corrected through weight calibration, so that the calibration precision and the calibration efficiency are improved.
Example 2
Referring to fig. 1-3, a calibration device for a downhole drilling pressure torque measurement nipple comprises a base 1, wherein a nipple fixing support 3, a nipple righting support 6, a lead screw support 11, a worm gear support 14, a worm support 21 and a motor support 22 are fixedly connected to the base 1, a nipple fixing head 4 is connected to the nipple fixing support 3, a measurement nipple 5 is arranged between the nipple fixing support 3 and the nipple righting support 6, a nipple conversion head 7 is connected to the measurement nipple 5, a lead screw 10 is arranged between the lead screw support 11 and the nipple righting support 6, the lead screw 10 is connected to the lead screw support 11 through a thread, a variable connection sleeve 8 is connected to one end of the lead screw 10, the nipple conversion head 7 is connected to the variable connection sleeve 8, a worm gear shaft 13 is arranged between the worm gear support 14 and the lead screw support 11, and a worm gear 15 is arranged on the worm gear shaft 13, one end of a worm wheel shaft 13 is connected with a transmission connecting sleeve 12, the other end of the worm wheel shaft 13 is installed on a worm wheel support 14, the other end of the lead screw 10 is connected with the transmission connecting sleeve 12, a worm 20 matched with the worm wheel 15 is installed on a worm support 21, a motor 24 is fixed on a motor support 22, a clutch 23 is connected on the motor 24, one end of the worm 20 is connected with the clutch 23, the other end of the worm 20 is connected with a winding wheel 19, two steel wire ropes 17 in opposite directions are wound on the winding wheel 19, and a loading weight disc 16 and an unloading weight disc 25 are connected on the steel wire ropes 17.
One end of the measuring short section 5 penetrates through the short section righting support 6, the other end of the measuring short section 5 is connected with the short section fixing head 4, and the measuring short section 5 moves axially and rotates circumferentially in the short section righting support 6.
The embodiment is a preferred embodiment, the high transmission ratio is realized by using the speed reduction principle of the worm wheel 15 and the worm 20 transmission mechanism, the torque is amplified, the large bit pressure and the torque calibration can be realized by using smaller force, and the precision of the calibration device is improved.
Example 3
Referring to fig. 1-3, a calibration device for a downhole drilling pressure torque measurement nipple comprises a base 1, wherein a nipple fixing support 3, a nipple righting support 6, a lead screw support 11, a worm gear support 14, a worm support 21 and a motor support 22 are fixedly connected to the base 1, a nipple fixing head 4 is connected to the nipple fixing support 3, a measurement nipple 5 is arranged between the nipple fixing support 3 and the nipple righting support 6, a nipple conversion head 7 is connected to the measurement nipple 5, a lead screw 10 is arranged between the lead screw support 11 and the nipple righting support 6, the lead screw 10 is connected to the lead screw support 11 through a thread, a variable connection sleeve 8 is connected to one end of the lead screw 10, the nipple conversion head 7 is connected to the variable connection sleeve 8, a worm gear shaft 13 is arranged between the worm gear support 14 and the lead screw support 11, and a worm gear 15 is arranged on the worm gear shaft 13, one end of a worm wheel shaft 13 is connected with a transmission connecting sleeve 12, the other end of the worm wheel shaft 13 is installed on a worm wheel support 14, the other end of a lead screw 10 is connected with the transmission connecting sleeve 12, a worm 20 matched with a worm wheel 15 is installed on a worm support 21, a motor 24 is fixed on a motor support 22, a clutch 23 is connected on the motor 24, one end of the worm 20 is connected with the clutch 23, the other end of the worm 20 is connected with a reel 19, two steel wire ropes 17 in opposite directions are wound on the reel 19, and a loading weight disc 16 and an unloading weight disc 25 are connected on the steel wire ropes 17.
One end of the measuring short section 5 penetrates through the short section righting support 6, the other end of the measuring short section 5 is connected with the short section fixing head 4, and the measuring short section 5 moves axially and rotates circumferentially in the short section righting support 6.
The clutch 23 is used for disconnecting when the weight is loaded or unloaded and combining when the motor 24 is loaded or unloaded.
The reel 19 is provided with a dial 18, and the worm support 21 is provided with scale marks for observing the rotating angle of the worm wheel 15.
The present embodiment is a further preferred embodiment, and by using the worm wheel 15 and worm 20 mechanism, gradual loading and unloading of a tiny load can be realized, and the control precision is greatly improved.
The motor 24 can be used for loading and unloading quickly after the weight calibration, and the weights do not need to be increased or decreased repeatedly, so that the whole calibration operation is more convenient, and the calibration efficiency is improved.
Example 4
Referring to fig. 1-3, a calibration device for a downhole drilling pressure torque measurement nipple comprises a base 1, wherein a nipple fixing support 3, a nipple righting support 6, a lead screw support 11, a worm gear support 14, a worm support 21 and a motor support 22 are fixedly connected to the base 1, a nipple fixing head 4 is connected to the nipple fixing support 3, a measurement nipple 5 is arranged between the nipple fixing support 3 and the nipple righting support 6, a nipple conversion head 7 is connected to the measurement nipple 5, a lead screw 10 is arranged between the lead screw support 11 and the nipple righting support 6, the lead screw 10 is connected to the lead screw support 11 through a thread, a variable connection sleeve 8 is connected to one end of the lead screw 10, the nipple conversion head 7 is connected to the variable connection sleeve 8, a worm gear shaft 13 is arranged between the worm gear support 14 and the lead screw support 11, and a worm gear 15 is arranged on the worm gear shaft 13, one end of a worm wheel shaft 13 is connected with a transmission connecting sleeve 12, the other end of the worm wheel shaft 13 is installed on a worm wheel support 14, the other end of a lead screw 10 is connected with the transmission connecting sleeve 12, a worm 20 matched with a worm wheel 15 is installed on a worm support 21, a motor 24 is fixed on a motor support 22, a clutch 23 is connected on the motor 24, one end of the worm 20 is connected with the clutch 23, the other end of the worm 20 is connected with a reel 19, two steel wire ropes 17 in opposite directions are wound on the reel 19, and a loading weight disc 16 and an unloading weight disc 25 are connected on the steel wire ropes 17.
One end of the measuring short section 5 penetrates through the short section righting support 6, the other end of the measuring short section 5 is connected with the short section fixing head 4, and the measuring short section 5 moves axially and rotates circumferentially in the short section righting support 6.
The clutch 23 is used for disconnecting when the weight is loaded or unloaded and combining when the motor 24 is loaded or unloaded.
The reel 19 is provided with a dial 18, and the worm support 21 is provided with scale marks for observing the rotating angle of the worm wheel 15.
The base 1 is provided with a connecting groove, and the nipple fixing support 3, the nipple righting support 6, the screw rod support 11, the worm gear support 14, the worm support 21 and the motor support 22 are fixed on the base 1 through the connecting groove.
In the embodiment, the whole calibration device utilizes the principle of the clutch 23 to realize the conversion of transmitted bit pressure and torque, utilizes the screw rod 10 mechanism to amplify axial thrust, utilizes the worm wheel 15 and worm 20 mechanism to amplify torque, establishes a relationship between the rotation angle of the dial 18 on the worm wheel 15 and weight of the weight, calibrates the test device through the weight, and then utilizes the motor 24 to drive the worm 20 to rotate, thereby not only improving the calibration efficiency, but also improving the calibration precision.
Example 5
Referring to fig. 1-3, a calibration device for a downhole drilling pressure torque measurement nipple comprises a base 1, wherein a nipple fixing support 3, a nipple righting support 6, a lead screw support 11, a worm gear support 14, a worm support 21 and a motor support 22 are fixedly connected to the base 1, a nipple fixing head 4 is connected to the nipple fixing support 3, a measurement nipple 5 is arranged between the nipple fixing support 3 and the nipple righting support 6, a nipple conversion head 7 is connected to the measurement nipple 5, a lead screw 10 is arranged between the lead screw support 11 and the nipple righting support 6, the lead screw 10 is connected to the lead screw support 11 through a thread, a variable connection sleeve 8 is connected to one end of the lead screw 10, the nipple conversion head 7 is connected to the variable connection sleeve 8, a worm gear shaft 13 is arranged between the worm gear support 14 and the lead screw support 11, and a worm gear 15 is arranged on the worm gear shaft 13, one end of a worm wheel shaft 13 is connected with a transmission connecting sleeve 12, the other end of the worm wheel shaft 13 is installed on a worm wheel support 14, the other end of the lead screw 10 is connected with the transmission connecting sleeve 12, a worm 20 matched with the worm wheel 15 is installed on a worm support 21, a motor 24 is fixed on a motor support 22, a clutch 23 is connected on the motor 24, one end of the worm 20 is connected with the clutch 23, the other end of the worm 20 is connected with a winding wheel 19, two steel wire ropes 17 in opposite directions are wound on the winding wheel 19, and a loading weight disc 16 and an unloading weight disc 25 are connected on the steel wire ropes 17.
One end of the measuring short section 5 penetrates through the short section righting support 6, the other end of the measuring short section 5 is connected with the short section fixing head 4, and the measuring short section 5 moves axially and rotates circumferentially in the short section righting support 6.
The clutch 23 is used for disconnecting when weights are loaded or unloaded and for combining when the motor 24 is loaded or unloaded.
The reel 19 is provided with a dial 18, and the worm support 21 is provided with scale marks for observing the rotating angle of the worm wheel 15.
The short section fixing support 3, the short section righting support 6, the lead screw support 11, the worm wheel support 14, the worm support 21 and the motor support 22 are fixed on the base 1 through the connecting grooves.
The measuring nipple 5 is provided with a thread buckle, the nipple fixing head 4 is provided with a female buckle, and the measuring nipple 5 is connected with the female buckle of the nipple fixing head 4 through the thread buckle.
This embodiment is a further preferred embodiment and can be used to apply dynamic weight-on-bit and torque to the gauging nipple 5 and test the dynamic response characteristics of the strain sensor when not calibrated.
Example 6
Referring to fig. 1-3, a calibration device for a downhole drilling pressure torque measurement nipple comprises a base 1, wherein a nipple fixing support 3, a nipple righting support 6, a lead screw support 11, a worm gear support 14, a worm support 21 and a motor support 22 are fixedly connected to the base 1, a nipple fixing head 4 is connected to the nipple fixing support 3, a measurement nipple 5 is arranged between the nipple fixing support 3 and the nipple righting support 6, a nipple conversion head 7 is connected to the measurement nipple 5, a lead screw 10 is arranged between the lead screw support 11 and the nipple righting support 6, the lead screw 10 is connected to the lead screw support 11 through a thread, a variable connection sleeve 8 is connected to one end of the lead screw 10, the nipple conversion head 7 is connected to the variable connection sleeve 8, a worm gear shaft 13 is arranged between the worm gear support 14 and the lead screw support 11, and a worm gear 15 is arranged on the worm gear shaft 13, one end of a worm wheel shaft 13 is connected with a transmission connecting sleeve 12, the other end of the worm wheel shaft 13 is installed on a worm wheel support 14, the other end of a lead screw 10 is connected with the transmission connecting sleeve 12, a worm 20 matched with a worm wheel 15 is installed on a worm support 21, a motor 24 is fixed on a motor support 22, a clutch 23 is connected on the motor 24, one end of the worm 20 is connected with the clutch 23, the other end of the worm 20 is connected with a reel 19, two steel wire ropes 17 in opposite directions are wound on the reel 19, and a loading weight disc 16 and an unloading weight disc 25 are connected on the steel wire ropes 17.
One end of the measuring short section 5 penetrates through the short section righting support 6, the other end of the measuring short section 5 is connected with the short section fixing head 4, and the measuring short section 5 moves axially and rotates circumferentially in the short section righting support 6.
The clutch 23 is used for disconnecting when weights are loaded or unloaded and for combining when the motor 24 is loaded or unloaded.
The reel 19 is provided with a dial 18, and the worm support 21 is provided with scale marks for observing the rotating angle of the worm wheel 15.
The short section fixing support 3, the short section righting support 6, the lead screw support 11, the worm wheel support 14, the worm support 21 and the motor support 22 are fixed on the base 1 through the connecting grooves.
The measuring nipple 5 is provided with a thread buckle, the nipple fixing head 4 is provided with a female buckle, and the measuring nipple 5 is connected with the female buckle of the nipple fixing head 4 through the thread buckle.
And a male buckle is arranged on the short section conversion head 7, and the measuring short section 5 is connected with the male buckle of the short section conversion head 7 through a threaded buckle.
The loading weight tray 16 and the unloading weight tray 25 are the same in size. The diameter of the measuring nipple 5 is larger than that of the lead screw 10.
The base 1 is rectangular.
The embodiment is the best mode, and the screw rod 10 mechanism and the worm wheel 15 and worm 20 mechanism are organically combined, so that the pressure and the torque can be amplified, and further, the large bit pressure and the large torque output can be realized.
Firstly, the weights are used for accurate calibration, then the weights and the dial 18 are used, the motor 24 provides power to calibrate the measuring nipple 5 quickly, and the control precision can be effectively guaranteed.
Through variable adapter sleeve 8 and nipple joint conversion head 7, realized the conversion of transmission axial force and transmission moment of torsion between lead screw 10 and the measurement nipple joint 5, and then can realize the independent demarcation of weight on bit and moment of torsion.

Claims (10)

1. The utility model provides a calibration device of pressure-on-bit torque measurement nipple joint in pit, includes base (1), its characterized in that: the device is characterized in that a short section fixing support (3), a short section righting support (6), a lead screw support (11), a worm gear support (14), a worm support (21) and a motor support (22) are fixedly connected to the base (1), a short section fixing head (4) is connected to the short section fixing support (3), a measuring short section (5) is arranged between the short section fixing support (3) and the short section righting support (6), a short section conversion head (7) is connected to the measuring short section (5), a lead screw (10) is arranged between the lead screw support (11) and the short section righting support (6), the lead screw (10) is connected to the lead screw support (11) through threads, one end of the lead screw (10) is connected with a variable connecting sleeve (8), the short section conversion head (7) is connected with the variable connecting sleeve (8), and a worm gear shaft (13) is arranged between the worm gear support (14) and the lead screw support (11), the worm gear mechanism is characterized in that a worm gear (15) is mounted on a worm gear shaft (13), one end of the worm gear shaft (13) is connected with a transmission connecting sleeve (12), the other end of the worm gear shaft (13) is mounted on a worm gear support (14), the other end of a lead screw (10) is connected with the transmission connecting sleeve (12), a worm (20) matched with the worm gear (15) is mounted on a worm support (21), a motor (24) is fixed on the motor support (22), a clutch (23) is connected on the motor (24), one end of the worm (20) is connected with the clutch (23), the other end of the worm (20) is connected with a reel (19), two steel wire ropes (17) in opposite directions are wound on the reel (19), and a loading scale (16) and an unloading scale (25) are connected on the steel wire ropes (17).
2. The calibration device of the downhole weight-on-bit torque measurement nipple of claim 1, wherein: one end of the measuring short section (5) penetrates through the short section righting support (6), the other end of the measuring short section (5) is connected with the short section fixing head (4), and the measuring short section (5) moves axially and rotates circumferentially in the short section righting support (6).
3. The calibration device of the downhole weight-on-bit torque measurement nipple of claim 2, wherein: the clutch (23) is used for disconnecting when the weight is loaded or unloaded and combining when the motor (24) is loaded or unloaded.
4. The calibration device of the downhole weight-on-bit torque measurement nipple of claim 3, wherein: a dial (18) is mounted on the reel (19), and scale marks for observing the rotation angle of the worm wheel (15) are arranged on the worm support (21).
5. The calibration device of the downhole weight-on-bit torque measurement nipple of claim 4, wherein: the pipe joint centering device is characterized in that a connecting groove is formed in the base (1), and the pipe joint fixing support (3), the pipe joint centering support (6), the screw rod support (11), the worm gear support (14), the worm support (21) and the motor support (22) are fixed to the base (1) through the connecting groove.
6. The calibration device of the downhole weight-on-bit torque measurement nipple of claim 5, wherein: the measuring nipple (5) is provided with a threaded buckle, the nipple fixing head (4) is provided with a female buckle, and the measuring nipple (5) is connected with the female buckle of the nipple fixing head (4) through the threaded buckle.
7. The calibration device of the downhole weight-on-bit torque measurement nipple of claim 6, wherein: the nipple joint conversion head (7) is provided with a male buckle, and the measuring nipple joint (5) is connected with the male buckle of the nipple joint conversion head (7) through a threaded buckle.
8. The calibration device of the downhole weight-on-bit torque measurement nipple of claim 1, wherein: the loading weight tray (16) and the unloading weight tray (25) are the same in size.
9. The calibration device of the downhole weight-on-bit torque measurement nipple of claim 1, wherein: the diameter of the measuring nipple (5) is larger than that of the lead screw (10).
10. The calibration device of the downhole weight-on-bit torque measurement nipple of claim 1, wherein: the base (1) is cuboid.
CN202111273682.XA 2021-10-29 2021-10-29 Calibration device for underground bit pressure torque measurement nipple Active CN114017012B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080127711A1 (en) * 2006-12-04 2008-06-05 Farag Tarek A Z Force and Torque Measurements with Calibration and Auto Scale
US20110214477A1 (en) * 2010-03-02 2011-09-08 Gray Nathan D Torque calibrating system
CN202391405U (en) * 2011-06-20 2012-08-22 中国石油化工集团公司 Scaling device of MWD (measurement while drilling) apparatus for drilling pressure and torque in petroleum drilling
CN102839961A (en) * 2011-06-20 2012-12-26 中国石油化工集团公司 Calibration device of bit pressure/torque measurement while drilling apparatus in oil drilling and method
CN109632183A (en) * 2019-01-22 2019-04-16 北京邮电大学 A kind of pressure sensor calibrating experimental provision based on worm and gear
CN109781340A (en) * 2019-01-22 2019-05-21 西南石油大学 A kind of bit pressure and torque rating test device and scaling method
CN211452821U (en) * 2020-02-17 2020-09-08 中石化石油工程技术服务有限公司 Device for calibrating drilling pressure and torque of downhole drilling tool

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080127711A1 (en) * 2006-12-04 2008-06-05 Farag Tarek A Z Force and Torque Measurements with Calibration and Auto Scale
US20110214477A1 (en) * 2010-03-02 2011-09-08 Gray Nathan D Torque calibrating system
CN202391405U (en) * 2011-06-20 2012-08-22 中国石油化工集团公司 Scaling device of MWD (measurement while drilling) apparatus for drilling pressure and torque in petroleum drilling
CN102839961A (en) * 2011-06-20 2012-12-26 中国石油化工集团公司 Calibration device of bit pressure/torque measurement while drilling apparatus in oil drilling and method
CN109632183A (en) * 2019-01-22 2019-04-16 北京邮电大学 A kind of pressure sensor calibrating experimental provision based on worm and gear
CN109781340A (en) * 2019-01-22 2019-05-21 西南石油大学 A kind of bit pressure and torque rating test device and scaling method
CN211452821U (en) * 2020-02-17 2020-09-08 中石化石油工程技术服务有限公司 Device for calibrating drilling pressure and torque of downhole drilling tool

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