CN113482597A - Geological core drilling parameter hole bottom automatic monitoring device - Google Patents
Geological core drilling parameter hole bottom automatic monitoring device Download PDFInfo
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- CN113482597A CN113482597A CN202110941984.3A CN202110941984A CN113482597A CN 113482597 A CN113482597 A CN 113482597A CN 202110941984 A CN202110941984 A CN 202110941984A CN 113482597 A CN113482597 A CN 113482597A
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- 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
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- 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
- E21B47/06—Measuring temperature or pressure
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- 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
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
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- 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
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a device for automatically monitoring a geological core drilling parameter hole bottom. The device includes: the measuring short section comprises a measuring short section body, a power supply module and a hole bottom drilling parameter measuring module. The measuring nipple body is connected with the drill rod at the upper end, is connected with the drill bit at the lower end, is hollow inside, and is provided with a measuring groove in the outer wall. The hole bottom drilling parameter measuring module is sealed in the measuring groove and comprises at least one of a hole inclination module, a rotating speed module, a temperature module, a drilling pressure and torque module, an outer ring air pressure module and an inner ring air pressure module. The hole inclination module, the rotating speed module, the temperature module, the bit pressure and torque module, the outer ring air pressure module and the inner ring air pressure module are respectively used for measuring hole inclination, rotating speed, hole bottom temperature, hole bottom bit pressure and drilling torque, outer annular pressure and inner annular pressure. The power module is used for at least providing electric energy for the bottom hole drilling parameter measuring module. The invention realizes the measurement of the real drilling parameters at the drill bit.
Description
Technical Field
The invention relates to the field of geological core drilling, in particular to a device for automatically monitoring a geological core drilling parameter hole bottom.
Background
In the geological drilling process, parameters such as bit pressure, rotating speed, torque, annular flushing fluid pressure and the like need to be monitored so as to monitor the drilling condition of the bottom of a hole in time. The traditional method is adopted at present to collect all parameter information at equipment such as a surface drilling machine, a water pump and the like and a slurry circulating system, and the hole bottom temperature and hole inclination parameters at the position close to a drill bit cannot be collected in the drilling process. Due to the fact that the depth, the hole body track, the drilling structure and the slurry performance of the drilled hole are different, all drilling parameters collected on the earth surface cannot reflect the real drilling parameter conditions of the drill bit at the bottom of the hole, and misjudgment is often caused to further cause an accident in the hole or influence the drilling efficiency.
Disclosure of Invention
The invention aims to provide a geological core drilling parameter hole bottom automatic monitoring device capable of measuring real drilling parameters at a drill bit at the hole bottom.
In order to achieve the purpose, the invention provides the following scheme:
a geological core drilling parameter hole bottom automatic monitoring device comprises: the measuring short section comprises a measuring short section body, a power supply module and a hole bottom drilling parameter measuring module;
the upper end of the measuring nipple body is used for being connected with a drill rod, the lower end of the measuring nipple body is used for being connected with a drill bit, the measuring nipple body is hollow inside, and a measuring groove is formed in the outer wall of the measuring nipple body;
the hole bottom drilling parameter measuring module is sealed in the measuring groove and comprises at least one of a hole inclination module, a rotating speed module, a temperature module, a drilling pressure and torque module, an outer ring air pressure module and an inner ring air pressure module;
the hole inclination module is used for measuring hole inclination, the rotating speed module is used for measuring rotating speed, the temperature module is used for measuring hole bottom temperature, the bit pressure and torque module is used for measuring hole bottom bit pressure and drilling torque, the outer annular pressure module is used for measuring outer annular pressure, the inner annular pressure module is used for measuring inner annular pressure, the outer annular pressure is the pressure of an outer ring space, the inner annular pressure is the pressure of an inner ring space, the outer ring space is the space between the outer wall of the measuring nipple body and a drilled hole, and the inner ring space is the pressure of the inner space of the measuring nipple body;
the power module is used for at least providing electric energy for the bottom hole drilling parameter measuring module.
Optionally, the method further includes: and the measurement while drilling system is used for transmitting the parameter information acquired by the bottom hole drilling parameter measurement module to a ground monitoring platform.
Optionally, the method further includes: and the master control transmitting system is used for transmitting the parameter information acquired by the bottom hole drilling parameter measuring module to the measurement while drilling system.
Optionally, the method further includes: the device comprises a communication interface and a storage module, wherein the storage module is used for storing the parameter information acquired by the downhole drilling parameter measuring module, and the communication interface is used for reading the parameter information in the storage module from the outside.
Optionally, the weight-on-bit and torque module comprises: four foil gage sensors, four the center of foil gage sensor is located measure on the same cross section of nipple joint body, it is adjacent the center of foil gage sensor arrives the perpendicular line mutually perpendicular of the axis of measuring nipple joint body, and adjacent the center of foil gage sensor arrives the distance of the axis of measuring nipple joint body equals.
Optionally, any one of the strain gauge sensors comprises a weight-on-bit strain gauge sensor for measuring weight-on-bit at the bottom of the hole and a torque strain gauge sensor for measuring drilling torque.
Optionally, the measuring groove includes a groove body, a sealing member and a cover plate, and the groove body is sealed by the sealing member and the cover plate.
Optionally, the measuring tank includes: at least one of a hole inclination module measuring groove, a rotating speed module measuring groove, a temperature module measuring groove, a bit pressure and torque module measuring groove, an outer ring air pressure module measuring groove and an inner ring air pressure module measuring groove.
Optionally, the pressure relief module further comprises a pressure relief groove, a pressure relief channel and a pressure relief plug, wherein the pressure relief channel communicates the measurement groove with the pressure relief groove, and the pressure relief plug plugs the pressure relief groove.
Optionally, the power module and the master control transmitting system are sealed in the measuring tank.
According to the specific embodiment provided by the invention, the following technical effects are disclosed: the application provides a geology rock core drilling parameter hole bottom automatic monitoring device creeps into parameter measurement module including measuring nipple joint body, power module and hole bottom. The upper end of the measuring nipple body is used for being connected with a drill rod, the lower end of the measuring nipple body is used for being connected with a drill bit, and a measuring groove is formed in the outer wall of the measuring nipple body. The hole bottom drilling parameter measuring module is sealed in the measuring groove and comprises at least one of a hole inclination module, a rotating speed module, a temperature module, a drilling pressure and torque module, an outer ring air pressure module and an inner ring air pressure module. The hole inclination module is used for measuring hole inclination, the rotating speed module is used for measuring rotating speed, the temperature module is used for measuring hole bottom temperature, the bit pressure and torque module is used for measuring hole bottom bit pressure and drilling torque, the outer annular pressure module is used for measuring outer annular air pressure of the short section measuring body, and the inner annular pressure module is used for measuring inner annular pressure of the short section measuring body. The device is connected with the drill bit and drills together with the drill bit, so that the bottom hole drilling parameter measuring module arranged on the device can measure the real drilling parameters of the drill bit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of an automatic hole bottom monitoring device for geological core drilling parameters in an embodiment of the invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
fig. 4 is a schematic diagram of arrangement of slot bottom strain gage sets in an embodiment of the invention.
1. The measuring short section comprises a measuring short section body, 2 and a master control transmitting system; 3. a hole inclination module; 4. a cover plate; 5. a rotation speed module; 6. a temperature module; 7. a socket; 8. a first strain gage sensor; 9. a pressure relief module; 10. a second strain gauge sensor; 11. an outer ring air pressure module; 12. a third strain gage sensor; 13. a communication interface; 14. a fourth strain gage sensor; 15. an inner annulus pressure module; 16. a battery compartment; 17. a measurement while drilling system; 31. a fluxgate sensor; 32. a main control processing circuit board; 33. an acceleration sensor; 81. a first strain gauge group; 82. a first strain gage cover; 83. a first O-ring; 84. a first weight-on-bit and torque conditioning plate; 101. a second strain gage set; 102. a second strain gauge cover; 103. a second O-ring; 104. a second weight-on-bit and torque conditioning plate; 111. an outer ring air pressure sensor; 112. a first gland; 113. a fifth O-ring; 121. a third strain gage group; 122. a third strain gage cover; 123. a third O-ring; 124. a third weight-on-bit and torque conditioning plate; 141. a fourth strain gage group; 142. a fourth strain gage cover; 143. a fourth O-ring; 144. a fourth weight-on-bit and torque conditioning plate; 151. an inner ring air pressure sensor; 152. a second gland; 153. and a sixth O-ring.
Detailed Description
In the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same or similar items having substantially the same function and action. For example, the first wireless communication module and the second wireless communication module are only used for distinguishing different wireless communication modules, and the sequence order thereof is not limited. Those skilled in the art will appreciate that the words "first," "second," and the like do not limit the number or order of execution.
It is noted that, in the present application, words such as "exemplary" or "for example" are used to mean exemplary, illustrative, or descriptive. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a geological core drilling parameter hole bottom automatic monitoring device capable of measuring real drilling parameters at a drill bit at the hole bottom.
Referring to fig. 1 to 3, the automatic monitoring device for the drilling parameter of the geological core at the bottom of the hole provided by the embodiment includes: the measuring short section comprises a measuring short section body 1, a power supply module and a hole bottom drilling parameter measuring module. The automatic monitoring device for the geological core drilling parameter hole bottom is applied to geological core drilling equipment.
Wherein, measure the upper end of nipple joint body 1 and be used for being connected with geological core drilling equipment's drilling rod, the lower extreme is used for being connected with geological core drilling equipment's drill bit, opens in the outer wall and is equipped with the measuring tank.
The hole bottom drilling parameter measuring module is sealed in the measuring groove and comprises at least one of a hole inclination module 3, a rotating speed module 5, a temperature module 6, a drilling pressure and torque module, an outer ring air pressure module 11 and an inner ring air pressure module 15. The hole inclination module 3 is used for measuring hole inclination, the rotating speed module 5 is used for measuring rotating speed, the temperature module 6 is used for measuring hole bottom temperature, the bit pressure and torque module is used for measuring hole bottom bit pressure and drilling torque, the outer ring air pressure module 11 is used for measuring outer ring pressure, and the inner ring air pressure module 15 is used for measuring inner ring pressure. Wherein, outer annular pressure is the pressure in outer ring space, and interior annular pressure is the pressure in interior annular space. The outer ring space is the space between the outer wall of the measuring nipple body and the drill hole, and the inner ring space is the pressure of the inner space of the measuring nipple body. The outer annular space and the inner annular space are communicated through a mud channel on the drill bit.
The power module is used for at least providing electric energy for the bottom hole drilling parameter measuring module. It should be noted that the power supply module may supply power to any device requiring power in the device for automatically monitoring the drilling parameter of the geological core at the bottom of the hole, for example, in addition to the above-mentioned parameter measurement module for drilling at the bottom of the hole, the power supply module may also supply power to a main control transmitting system 2, a measurement while drilling system 17, a storage module, a communication interface, and the like, which are described later.
The geological core drilling parameter hole bottom automatic monitoring device can realize the measurement of 7 parameters of bit pressure, torque, rotating speed, inner annular pressure, outer annular pressure, hole bottom temperature and hole inclination at the drill bit.
Further, in some embodiments, the automatic monitoring device for the drilling parameter of the geological core at the bottom of the hole further includes: a master control transmitting system 2 and a measurement while drilling system 17. The main control transmitting system 2 is used for transmitting the parameter information acquired by the downhole drilling parameter measuring module to the measurement while drilling system 17. The measurement while drilling system 17 is used for transmitting the parameter information acquired by the bottom hole drilling parameter measurement module to the ground monitoring platform. If monitoring while drilling is adopted, a measurement while drilling system is required to be installed, and a surface instrument on a monitoring platform can receive parameter information transmitted from the bottom of the hole, so that the drilling parameters of the bottom of the hole can be monitored at any time.
In some embodiments, the automatic monitoring device for the drilling parameter of the geological core at the bottom of the hole further comprises: the device comprises a communication interface 13 and a storage module, wherein the storage module is used for storing the parameter information acquired by the downhole drilling parameter measuring module, and the communication interface 13 is used for reading the parameter information stored in the storage module from the outside.
The automatic monitoring device for the drilling parameter of the geological core at the bottom of the hole has the double functions of storage and measurement while drilling. If the measurement while drilling function is not needed, a hole bottom parameter storage mode is adopted, after the drill is pulled out, the communication interface 13 is opened, and the hole bottom parameter data of different hole depths and time periods can be taken out or read out by connecting with a computer. The interval of data values stored in the hole bottom parameters can be set manually, the minimum interval is 2 seconds, and the maximum continuous working time of storage can reach 200 hours. If the measurement while drilling function is adopted, the parameters are wirelessly transmitted to the ground monitoring platform through the mud positive pulse mode by the hole bottom measurement while drilling system 17, the data is decoded and displayed, and the hole bottom working condition can be displayed in real time.
The above-mentioned modules will be described in detail
The hole bottom drilling parameter measuring module, the master control transmitting system 2, the power supply module and the like are all arranged and distributed on the nonmagnetic measuring nipple body 1. Sensors, chips and data acquisition information systems with different functions are respectively arranged in the hole inclination module 3, the rotating speed module 5, the temperature module 6, the bit pressure and torque module, the outer ring air pressure module 11 and the inner ring air pressure module 15, and each parameter measuring module transmits the measuring information to the main control transmitting system; the main control transmitting system mainly undertakes functions of communication, real-time clock, storage, sensor data acquisition and processing, wireless transmission and the like. And the power supply module supplies power to devices needing electric energy in the whole geological core drilling parameter hole bottom automatic monitoring device. The measurement while drilling system 17 is installed in a non-magnetic drill pipe (or drill collar) inner ring at the upper end of the hole bottom measuring device and used for receiving and transmitting parameter information to the ground.
The lower end of the measuring nipple body 1 is connected with a drill bit (or a drilling tool), and the upper end is connected with a drill rod (or a drill collar). A plurality of grooves are formed in the periphery of the outer ring of the measuring nipple body 1, each parameter measuring module, the main control system and the power supply system are installed in the corresponding groove, and a sealing piece, such as an O-shaped ring, is arranged and sealed by a gland or a cover plate 4. The sealing performance reaches 140MPa, and the temperature resistance reaches 175 ℃.
The hole bottom drilling parameter measuring module, the master control transmitting system 2, the power supply module and the like are all arranged in the outer ring periphery of the nonmagnetic stainless steel measuring nipple body 1 and are used for high-degree sealing treatment. The diameter of the inner hole of the measuring nipple body 1 is matched with the outer diameter of the rope coring inner tube, and rope coring drilling can be achieved.
The hole inclination module 3 is provided with a main control processing circuit board 32 and a high-precision high-temperature quartz flexible acceleration sensor 33 in the three-axis direction, and is used for acquiring three-axis data and fitting hole inclination numerical values.
According to the actual drilling construction process, when the instrument string does not rotate, the static well deviation data are not updated, and after the rotation vibration is sensed, the static well deviation data are sent through the 485 unit. And the main control transmitting system 2 stores and saves the static well deviation data after receiving the static well deviation data.
Above-mentioned weight-on-bit and moment of torsion module adopt the foil gage sensor (first foil gage sensor 8, second foil gage sensor 10, third foil gage sensor 12, fourth foil gage sensor 14) to respond to the deflection of measuring nipple joint body 1, respectively carry out the paster in 4 symmetric positions in the outer ring week of measuring nipple joint body 1, two adjacent positions are 90 each other, it is concrete, the center of four foil gage sensors is located the same cross section of measuring nipple joint body 1, the center of adjacent foil gage sensor is to the perpendicular line mutually perpendicular of the axis of measuring nipple joint body 1, and the center of adjacent foil gage sensor equals to the distance of the axis of measuring nipple joint body 1. The strain gauges corresponding to the 4 positions are connected to form a drilling pressure bridge circuit and a torque bridge circuit, deformation is induced through the strain gauges on the bridge circuits, then a change signal is output, and the signal is processed and converted into a drilling pressure numerical value and a torque numerical value. The strain gauge sensor comprises a strain gauge set, and the strain gauge set comprises a drilling pressure strain gauge sensor used for measuring drilling pressure at the bottom of a hole and a torque strain gauge sensor used for measuring drilling torque. Referring to fig. 4, the drilling pressure strain gauge sensor is a single-feather strain gauge, and the torque strain gauge sensor is a double-feather strain gauge.
The weight on bit mainly causes variations in the axial and radial body, so that the measuring strain gauges are placed in the axial and radial directions, respectively. The torque mainly causes a change in the body in the shear direction, and therefore the gauge strain gauges are placed separately in the shear direction. The drilling pressure and torque strain gauges form a Wheatstone measuring bridge circuit respectively to output differential signals. And the differential signal is subjected to primary amplification, voltage deviation, filtering and secondary amplification through a signal conditioning board and then is output to a master control transmitting system. The main control launching system carries out special AD modulus processing, and finally obtains the numerical values of the bit pressure and the torque output through a special proportion formula, a temperature drift formula, a correction formula and the like.
The rotating speed module 5 adopts a two-axis magnetoresistive sensor, two paths of signals are amplified, flow into a special single chip microcomputer for comparison processing, are converted into visual rotating speed numerical values through a rotating speed program model, and are transmitted to a master control transmitting system through a 485 bus.
The temperature module 6 collects and processes temperature by adopting a temperature sensitive chip, wherein the chip is a monolithic integrated two-end temperature sensing current source, and the output current of the chip is proportional to absolute temperature. And outputting the signals to a master control transmitting system, carrying out special AD analog-to-digital processing on the master control transmitting system, and finally obtaining a temperature output numerical value through a special proportional formula, a correction formula and the like.
The inner annular pressure module 15 and the outer annular pressure module 11 are respectively installed at 180-degree symmetrical positions (one is used for monitoring the inner annular pressure, and the other is used for monitoring the outer annular pressure) on the periphery of the measuring nipple body 1. The pressure sensor is adopted to measure the liquid pressure of the inner annulus and the outer annulus, a Wheatstone measuring bridge circuit is formed by the strain gauges of the internal circuits of the pressure sensor, differential signals are output, and the differential signals are subjected to primary amplification, voltage migration, filtering and secondary amplification through the signal conditioning board and then output to the master control transmitting system 2. The main control transmitting system 2 carries out special AD modulus processing, and finally obtains the output numerical values of the inner ring air pressure and the outer ring air pressure through a special proportion formula, a temperature drift formula, a correction formula and the like.
Above-mentioned geology rock core drilling parameter hole bottom automatic monitoring device still includes pressure release module 9, and pressure release module 9 includes pressure release groove, pressure release channel and pressure release stopper, and pressure release channel will measure groove and pressure release groove intercommunication, and pressure release stopper covers pressure release groove.
It should be noted that the master control transmitting system, the power module, the rotating speed module 5, and the temperature module 6 may be disposed in the same measuring groove, or the power module may be disposed in another battery compartment 16, which is also a groove disposed in the outer wall of the measuring nipple body 1.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The utility model provides a geological core drilling parameter hole bottom automatic monitoring device which characterized in that includes: the measuring short section comprises a measuring short section body, a power supply module and a hole bottom drilling parameter measuring module;
the upper end of the measuring nipple body is used for being connected with a drill rod, the lower end of the measuring nipple body is used for being connected with a drill bit, the measuring nipple body is hollow inside, and a measuring groove is formed in the outer wall of the measuring nipple body;
the hole bottom drilling parameter measuring module is sealed in the measuring groove and comprises at least one of a hole inclination module, a rotating speed module, a temperature module, a drilling pressure and torque module, an outer ring air pressure module and an inner ring air pressure module;
the hole inclination module is used for measuring hole inclination, the rotating speed module is used for measuring rotating speed, the temperature module is used for measuring hole bottom temperature, the bit pressure and torque module is used for measuring hole bottom bit pressure and drilling torque, the outer annular pressure module is used for measuring outer annular pressure, the inner annular pressure module is used for measuring inner annular pressure, the outer annular pressure is the pressure of an outer ring space, the inner annular pressure is the pressure of an inner ring space, the outer ring space is the space between the outer wall of the measuring nipple body and a drilled hole, and the inner ring space is the pressure of the inner space of the measuring nipple body;
the power module is used for at least providing electric energy for the bottom hole drilling parameter measuring module.
2. The apparatus for automatically monitoring the drilling parameters of geological cores at the bottom of a hole according to claim 1, further comprising: and the measurement while drilling system is used for transmitting the parameter information acquired by the bottom hole drilling parameter measurement module to a ground monitoring platform.
3. The apparatus of claim 2, further comprising: and the master control transmitting system is used for transmitting the parameter information acquired by the bottom hole drilling parameter measuring module to the measurement while drilling system.
4. The apparatus for automatically monitoring the drilling parameters of geological cores at the bottom of a hole according to claim 3, further comprising: the device comprises a communication interface and a storage module, wherein the storage module is used for storing the parameter information acquired by the downhole drilling parameter measuring module, and the communication interface is used for reading the parameter information in the storage module from the outside.
5. The apparatus of claim 1, wherein the weight-on-bit and torque module comprises: four foil gage sensors, four the center of foil gage sensor is located measure on the same cross section of nipple joint body, it is adjacent the center of foil gage sensor arrives the perpendicular line mutually perpendicular of the axis of measuring nipple joint body, and adjacent the center of foil gage sensor arrives the distance of the axis of measuring nipple joint body equals.
6. The device for automatically monitoring the drilling parameters of the geological core at the bottom of the hole according to claim 5, wherein any one of the strain gauge sensors comprises a weight-on-bit strain gauge sensor for measuring the weight on the bottom of the hole and a torque strain gauge sensor for measuring the drilling torque.
7. The device for automatically monitoring the drilling parameters of the geological core at the bottom of the hole according to claim 1, wherein the measuring groove comprises a groove body, a sealing piece and a cover plate, and the groove body is sealed by the sealing piece and the cover plate.
8. The apparatus of claim 1, wherein the measurement slot comprises: at least one of a hole inclination module measuring groove, a rotating speed module measuring groove, a temperature module measuring groove, a bit pressure and torque module measuring groove, an outer ring air pressure module measuring groove and an inner ring air pressure module measuring groove.
9. The device for automatically monitoring the drilling parameter of the geological core at the hole bottom according to claim 1, further comprising a pressure relief module, wherein the pressure relief module comprises a pressure relief groove, a pressure relief channel and a pressure relief plug, the pressure relief channel communicates the measuring groove with the pressure relief groove, and the pressure relief plug plugs the pressure relief groove.
10. The device for automatically monitoring the drilling parameters of the geological core at the bottom of the hole according to claim 3, wherein the power module and the main control launching system are sealed in the measuring tank.
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Cited By (6)
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| CN113931615A (en) * | 2021-10-22 | 2022-01-14 | 中国石油大学(华东) | Near-bit engineering parameter real-time measurement-while-drilling device |
| CN114165212A (en) * | 2021-11-26 | 2022-03-11 | 中国地质科学院勘探技术研究所 | Drilling parameter acquisition test device for small-caliber core drilling |
| CN114198014A (en) * | 2021-12-06 | 2022-03-18 | 北京信息科技大学 | A torsional impactor with self-monitoring working state |
| CN114293978A (en) * | 2021-12-28 | 2022-04-08 | 北京信息科技大学 | Drill bit with data monitoring function |
| CN115680607A (en) * | 2022-11-17 | 2023-02-03 | 中国石油天然气集团有限公司 | Underground bit pressure torque measuring system |
| CN116104485A (en) * | 2021-11-11 | 2023-05-12 | 中国石油天然气集团有限公司 | Measurement while drilling device |
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