CN116464390B - Mechanical type correction system suitable for polar region ice layer hot melt drilling tool - Google Patents

Mechanical type correction system suitable for polar region ice layer hot melt drilling tool Download PDF

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Publication number
CN116464390B
CN116464390B CN202310348450.9A CN202310348450A CN116464390B CN 116464390 B CN116464390 B CN 116464390B CN 202310348450 A CN202310348450 A CN 202310348450A CN 116464390 B CN116464390 B CN 116464390B
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hot melt
ice layer
cabin
gear
driven bevel
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CN116464390A (en
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王超
孙友宏
李亚洲
李冰
冶宇霆
汪月
李小冰
来兴文
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China University of Geosciences Beijing
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China University of Geosciences Beijing
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/04Directional drilling
    • E21B7/10Correction of deflected boreholes
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/008Drilling ice or a formation covered by ice

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

The invention discloses a mechanical type inclination correction system suitable for a polar region ice layer hot melt drilling tool, which comprises a sealed cabin, a power mechanism and a transmission mechanism, wherein the power mechanism comprises a water-tight connector and a speed reduction motor, and the transmission mechanism comprises a gear transmission assembly, an electromagnetic clutch and a spiral transmission assembly. The water-tight connector provides power for the gear motor and the electromagnetic clutch, controls the gear motor to rotate and the electromagnetic clutch to be attracted, drives the internal thread shaft corresponding to the gear motor to rotate in the transmission mechanism, the screw rod is acted by friction force to generate movement trend, the limiter limits the circumferential rotation of the screw rod to enable the screw rod to do linear movement outwards, and the screw rod stretches out of the sealed cabin to act on the hole wall to provide supporting reaction force, so that inclination correction is realized. After the correction is completed, the control module controls the gear motor to rotate reversely, and the screw rod is retracted. The inclination correction system solves the technical problem that the drilling holes are easy to deviate in the drilling process of the ice layer hot melt drilling tool, realizes underground autonomous inclination correction of the hot melt drilling tool, and is beneficial to realizing vertical drilling of the ice layer hot melt drilling tool.

Description

Mechanical type correction system suitable for polar region ice layer hot melt drilling tool
Technical Field
The invention relates to a mechanical type inclination correction mechanism, in particular to a mechanical type inclination correction system suitable for a polar ice layer hot melt drilling tool.
Background
The north and south poles of the earth develop widely with huge ice covers, which store much ancient climate and ancient environment information. The development of polar ice cap detection has important scientific significance for revealing ice cap formation mechanism, predicting global climate change, exploring unknown life forms and the like. Drilling is one of the most direct and effective technical means in polar ice cap exploration. The hot melt drilling tool usually utilizes heat energy generated by the resistance element to melt the ice layer to realize drilling, is a tool commonly used in ice layer drilling, and plays an important role in polar ice cover detection.
The ice layer hot melt drilling tool is inclined frequently due to the reasons of uneven heating of the ice layer at the bottom, poor structural stability of the drilling tool, higher cable laying speed of the drilling tool than drilling speed and the like in the actual drilling process, so that a drilling hole deviates from a preset track, the drilling hole is bent, and downward vertical drilling cannot be realized. Once the drilling hole deviates from the preset track, if the drilling hole is not corrected in time, the deviation distance of the drilling hole gradually increases along with the increase of the drilling depth, so that the hot-melt drilling tool cannot drill into the target area, and not only can great manpower, material resources and financial resources be wasted, but also extremely precious scientific investigation time can be consumed. In the drilling process of the ice layer hot-melt drilling tool, if the inclination degree of the drilling tool can be measured in real time and corrected, the drilling track can be effectively controlled, and the hot-melt drilling tool is ensured to vertically drill.
At present, no special hot-melt drilling tool inclination correction system exists, most hot-melt drilling tools can only adopt methods of adding a centralizer, a guide rod, a suspension drilling tool and the like to reduce the inclination degree of a drilling hole, but the hot-melt drilling tool inclination correction system has limited action effect and cannot realize rapid and efficient inclination correction of the hot-melt drilling tools. Therefore, the development of an efficient inclination correction system has important significance for vertical drilling of the polar ice layer hot melt drilling tool.
Disclosure of Invention
The invention aims to solve the problem of drilling deflection of the existing hot melt drilling tool in the process of ice layer drilling, and provides a mechanical deflection correction system suitable for the polar ice layer hot melt drilling tool.
In order to achieve the above purpose, the present invention provides the following technical solutions: a mechanical type correcting system suitable for a polar ice layer hot-melt drilling tool comprises a sealed cabin, and a power mechanism and a transmission mechanism which are arranged in the sealed cabin; the power mechanism comprises a watertight connector and a speed reduction motor, and the watertight connector is connected with a watertight cable; the power end of the gear motor is connected with the watertight connector, and the output shaft of the gear motor is connected with a drive bevel gear in the transmission mechanism through a coupler; the transmission mechanism comprises a gear transmission assembly, an electromagnetic clutch and a spiral transmission assembly, wherein the gear transmission assembly consists of a driving bevel gear and three driven bevel gears, the three driven bevel gears are positioned on the same plane and distributed at an interval of 120 DEG, each driven bevel gear is provided with a shaft part and a gear part connected with the shaft part, the gear parts of the driven bevel gears are meshed with the driving bevel gears and connected with each other, the shaft parts of the driven bevel gears are of cylindrical structures, the inner space of the driven bevel gears are used for arranging a limiter and a screw in the spiral transmission assembly, the shaft parts of the driven bevel gears are matched with bearings, and the shaft parts of the driven bevel gears are installed in bearing holes of a high bracket through the bearings; the driven bevel gear is connected with the driving end of the electromagnetic clutch through a key, and the power end of the electromagnetic clutch is connected with the watertight connector; the screw transmission assembly consists of an internal thread shaft, a screw and a limiter, wherein the internal thread shaft is of a cylindrical structure, the inner surface of the internal thread shaft is in threaded fit with the screw, and the internal thread shaft is arranged in a bearing hole of the low bracket through a bearing; the screw is a three-section stepped shaft, the middle section of the screw is provided with external threads matched with the internal thread shaft, the diameters of the two ends of the screw are different, one end with a large diameter is provided with a notch matched with the limiter, one end with a small diameter can extend out of the sealed cabin or retract into the sealed cabin, and a sealing ring is arranged at the contact part of the screw and the sealed cabin; the internal thread shaft is connected with the driven end of the electromagnetic clutch through a key.
Further, the sealed cabin comprises an upper end cover, an upper cabin body and a lower cabin body which are coaxially arranged and sequentially connected from top to bottom, and the upper end and the lower end of the upper cabin body are respectively sealed with the upper end cover and the lower cabin body through sealing rings.
Further, the water-tight connector is mounted on the upper end cap.
Further, the gear motor is fixed at the bottom of the upper cabin body.
Further, the high support and the low support are respectively fixed on the disc base through screws, and the high support is connected with the bottom of the upper cabin through screws; the disc base is fixed at the bottom of the lower cabin body through screws.
The mechanical type inclination correction system suitable for the polar ice layer hot melt drilling tool further comprises a cable guide mechanism, wherein the cable guide mechanism comprises guide wheels, guide wheel brackets and cable guide pipes, the number of the guide wheel brackets is two, and the two guide wheel brackets are respectively fixed on the top of the upper end cover and the bottom of the lower cabin through screws; the guide wheel is arranged on the guide wheel bracket; the cable duct penetrates through the whole sealed cabin, a sealing ring is arranged at the contact position of the upper end of the cable duct and the upper end cover, and a sealing ring is arranged at the contact position of the lower end of the cable duct and the lower cabin body.
Through the design scheme, the invention has the following beneficial effects: the mechanical inclination correction system provided by the invention solves the technical problem that the drilling holes are easy to deviate in the drilling process of the ice layer hot melt drilling tool, realizes underground autonomous inclination correction of the hot melt drilling tool, and is beneficial to realizing vertical drilling of the ice layer hot melt drilling tool. The inclination correction system is communicated with the existing inclination measuring modules and control modules of the hot-melt drilling tools positioned at other cabin sections, so that the underground inclination measuring and inclination correction closed-loop control can be realized without transmitting signals to the ground. The mechanical inclination correction system suitable for the polar ice layer hot melt drilling tool provided by the invention has an important effect on promoting the development of ice layer hot melt drilling technology and polar scientific research.
Drawings
Fig. 1 is a cross-sectional view of a mechanical type inclination correction system for a polar ice layer hot melt drilling tool according to the present invention.
FIG. 2 is a cross-sectional view of the power mechanism;
FIG. 3 is a cross-sectional view of the transmission;
FIG. 4 is a schematic diagram of a transmission layout;
reference numerals illustrate: 1-a guide wheel; 2-a guide wheel bracket; 3-cable conduit; 4-reducing motor; a 5-coupling; 6-a drive bevel gear; 7-driven bevel gears; 8-a limiter; 9-a stopper set screw; 10-screw rod; 11-a disc base; 12-watertight connector; 13-an upper end cap; 14-an upper cabin; 15-an electromagnetic clutch; 16-an internally threaded shaft; 17-high rack; 18-low rack; 19-a lower cabin; 20-bearing.
Detailed Description
The invention will be further described in detail with reference to the drawings and detailed description below in order to make the objects, features and advantages of the invention more comprehensible. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this invention is not limited to the details given herein. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. Well-known methods, procedures, flows, components and circuits have not been described in detail so as not to obscure the nature of the invention.
As shown in fig. 1, 2, 3 and 4, the invention provides a mechanical inclination correction system suitable for a polar ice layer hot melt drilling tool, which comprises a sealed cabin, a power mechanism and a transmission mechanism.
The sealed cabin comprises an upper end cover 13, an upper cabin body 14 and a lower cabin body 19 which are coaxially arranged and sequentially connected from top to bottom, wherein the upper end and the lower end of the upper cabin body 14 are respectively sealed with the upper end cover 13 and the lower cabin body 19 through sealing rings, the upper part of the upper cabin body 14 is connected with the upper end cover 13 through screws, and the upper cabin body 14 provides support for the whole power mechanism; the lower hull 19 provides support for the entire transmission.
The power mechanism comprises a watertight connector 12 and a gear motor 4, wherein the watertight connector 12 is arranged on an upper end cover 13, and the watertight connector 12 is connected with a watertight cable to provide power for the gear motor 4 and an electromagnetic clutch 15. The gear motor 4 is fixed at the bottom of the upper cabin 14 through screws, a power end of the gear motor 4 is connected with a watertight cable, and an output shaft of the gear motor 4 is connected with a drive bevel gear 6 in a transmission mechanism through a coupler 5 to provide power for the whole inclination correction system.
The transmission mechanism comprises a gear transmission assembly, an electromagnetic clutch 15 and a spiral transmission assembly, wherein the gear transmission assembly is composed of a driving bevel gear 6 and three driven bevel gears 7, the three driven bevel gears 7 are located on the same plane and distributed at intervals of 120 degrees, each driven bevel gear 7 is provided with a shaft part and a gear part connected with the shaft part, the gear parts of the driven bevel gears 7 are meshed with the driving bevel gears 6 and connected with each other, the shaft parts of the driven bevel gears 7 are of cylindrical structures, the inner space of each driven bevel gear 7 is used for arranging a limiter 8 and a screw 10, the shaft parts of the driven bevel gears 7 are matched with a bearing 20, and the shaft parts of the driven bevel gears 7 are installed in bearing holes of a high support 17 through the bearing 20. The driven bevel gear 7 is connected with one end of the electromagnetic clutch 15 through a key, the end, connected with the driven bevel gear 7, of the electromagnetic clutch 15 is used as a driving end of the electromagnetic clutch 15, the driving end of the electromagnetic clutch 15 keeps synchronous rotation along with the driven bevel gear 7, and a power end of the electromagnetic clutch 15 is connected with the watertight connector 12; the screw transmission assembly consists of an internal thread shaft 16, a screw rod 10 and a limiter 8, wherein the internal thread shaft 16 is of a cylindrical structure, the inner surface of the internal thread shaft 16 is in threaded fit with the screw rod 10, and the internal thread shaft 16 is installed in a bearing hole of the low bracket 18 through a bearing 20. The screw 10 is a three-section stepped shaft, the middle section of the screw 10 is provided with external threads matched with the internal thread shaft 16, the diameters of the two ends of the screw 10 are different, one end with a large diameter is provided with a notch matched with the limiter 8, the notch is matched with the limiter 8 to limit the circumferential movement of the screw 10, one end with a small diameter can extend out of the lower cabin 19 or retract into the lower cabin 19, and a sealing ring is arranged at the contact part of the screw 10 and the lower cabin 19; the other end of the internal thread shaft 16 is connected with the other end of the electromagnetic clutch 15 through a key, when the electromagnetic clutch 15 is electrified and attracted, the key connection end of the electromagnetic clutch 15 and the internal thread shaft 16 is used as the driven end of the electromagnetic clutch 15 to rotate along with the driving end of the electromagnetic clutch 15, and when the electromagnetic clutch 15 is disconnected, the driven end of the electromagnetic clutch 15 is kept static. The upper bracket 17 and the lower bracket 18 are respectively fixed on the disc base 11 through screws, and the upper bracket 17 is connected with the bottom of the upper cabin 14 through screws. The disc base 11 is fixed at the bottom of the lower cabin 19 through screws. Because the inner space of the lower cabin 19 is smaller, the assembly is inconvenient, so when in assembly, the parts in the lower cabin 19 are firstly installed and fixed on the disc base 11, and then the assembled parts are fixed at the bottom of the lower cabin 19 through the disc base 11 and screws.
The electromagnetic clutch 15 is fixed between the high bracket 17 and the low bracket 18 through a bearing arranged on the high bracket 17 and a shaft shoulder of the internal thread shaft 16, so that the axial displacement of the electromagnetic clutch is limited, and meanwhile, a pin hole is reserved at the driving end of the electromagnetic clutch 15 and is connected with the pin hole on the high bracket 17 through a bolt, so that the shell of the electromagnetic clutch 15 is prevented from rotating.
The cable guiding mechanism comprises a guide wheel 1, a guide wheel bracket 2 and a cable guide pipe 3. A main cable is arranged at the center of the hot melt drilling tool to provide power for the whole drilling tool system. The cable guiding mechanism is used for guiding the cable to the central position of the whole sealed cabin and preventing the cable from being damaged due to the fact that the bending radius of the cable at two ends of the cabin section of the sealed cabin is too small. The cable duct 3 runs through the upper cabin 14 and the lower cabin 19 to provide a channel for the cable, the lower end of the cable duct 3 is connected with the bottom of the lower cabin 19 through a screw, and the joints between the upper end cover 13 and the lower cabin 19 and the upper and lower ends of the cable duct 3 are connected through sealing rings. The number of the guide wheel supports 2 is two, the two guide wheel supports 2 are respectively fixed on the top of the upper end cover 13 and the bottom of the lower cabin 19 through screws, the guide wheel 1 is in interference fit with a threaded shaft, a shaft hole is reserved on the guide wheel support 2, the threaded shaft in interference fit with the guide wheel 1 is fixed on the guide wheel supports 2 through nuts, and the axial displacement of the guide wheel 1 is limited through a shaft sleeve.
It should be noted that, because the other cabin sections of the hot melt drilling tool used in the mechanical inclination correction system provided by the invention are provided with the inclination measuring module and the control module, the inclination measuring module is in communication connection with the control module, the invention does not need to additionally design the inclination measuring module and the control module, and the control module provides power and control signals for the gear motor 4 and the electromagnetic clutch 15 through the watertight cable and the watertight connector 12.
The working principle of the invention is as follows:
in the drilling process of the hot melt drilling tool, if the hot melt drilling tool inclines, the inclinometry module of the hot melt drilling tool can send signals to the control module in the hot melt drilling tool. After the control module judges the inclination direction of the hot-melt drilling tool, the circuit of the gear motor 4 and the corresponding electromagnetic clutch 15 is connected, the watertight connector 12 supplies power for the gear motor 4 and the corresponding electromagnetic clutch 15, the gear motor 4 is controlled to rotate and the electromagnetic clutch 15 is attracted to drive the corresponding internal thread shaft 16 to rotate, the screw 10 is subjected to friction force to generate movement trend due to the fact that the internal thread shaft 16 is connected with the screw 10 through threads, the screw 10 moves linearly outwards due to the fact that the limiter 8 limits circumferential rotation of the screw 10, the screw 10 stretches out of a sealed cabin to act on a hole wall to provide counter force, and therefore inclination correction is achieved. After the correction is completed, the control module controls the gear motor 4 to rotate reversely, and the screw rod 10 is retracted.

Claims (6)

1. The mechanical type inclination correction system suitable for the polar ice layer hot melt drilling tool is characterized by comprising a sealed cabin, and a power mechanism and a transmission mechanism which are arranged in the sealed cabin; the power mechanism comprises a watertight connector (12) and a gear motor (4), and the watertight connector (12) is connected with a watertight cable; the power end of the gear motor (4) is connected with the watertight connector (12), and the output shaft of the gear motor (4) is connected with a drive bevel gear (6) in the transmission mechanism through a coupler (5); the transmission mechanism comprises a gear transmission assembly, an electromagnetic clutch (15) and a spiral transmission assembly, wherein the gear transmission assembly is composed of a driving bevel gear (6) and three driven bevel gears (7), the three driven bevel gears (7) are located on the same plane and distributed at intervals of 120 degrees, each driven bevel gear (7) is provided with a shaft part and a gear part connected with the shaft part, the gear part of each driven bevel gear (7) is in meshed connection with the driving bevel gear (6), the shaft part of each driven bevel gear (7) is of a cylindrical structure, the inner space of the driven bevel gear is used for arranging a limiter (8) and a screw (10) in the spiral transmission assembly, the shaft part of each driven bevel gear (7) is matched with a bearing (20), and the shaft part of each driven bevel gear (7) is installed in a bearing hole of a high bracket (17) through the bearing (20); the driven bevel gear (7) is connected with the driving end of the electromagnetic clutch (15) through a key, and the power end of the electromagnetic clutch (15) is connected with the water-tight connector (12); the screw transmission assembly consists of an internal thread shaft (16), a screw rod (10) and a limiter (8), wherein the internal thread shaft (16) is of a cylindrical structure, the inner surface of the internal thread shaft (16) is in threaded fit with the screw rod (10), and the internal thread shaft (16) is installed in a bearing hole of the low bracket (18) through a bearing (20); the screw (10) is a three-section stepped shaft, the middle section of the screw (10) is provided with external threads matched with the internal thread shaft (16), the diameters of the two ends of the screw (10) are different, the end with the larger diameter is provided with a notch matched with the limiter (8), the end with the smaller diameter can extend out of the sealed cabin or retract into the sealed cabin, and a sealing ring is arranged at the contact position of the screw (10) and the sealed cabin; the internal thread shaft (16) is connected with the driven end of the electromagnetic clutch (15) through a key.
2. The mechanical entanglement system suitable for polar ice layer hot melt drilling tools according to claim 1, wherein: the sealed cabin comprises an upper end cover (13), an upper cabin body (14) and a lower cabin body (19) which are coaxially arranged and sequentially connected from top to bottom, and the upper end and the lower end of the upper cabin body (14) are respectively sealed with the upper end cover (13) and the lower cabin body (19) through sealing rings.
3. The mechanical entanglement system suitable for polar ice layer hot melt drilling tools according to claim 2, wherein: the watertight connector (12) is mounted on the upper end cover (13).
4. The mechanical entanglement system suitable for polar ice layer hot melt drilling tools according to claim 2, wherein: the gear motor (4) is fixed at the bottom of the upper cabin body (14).
5. The mechanical entanglement system suitable for polar ice layer hot melt drilling tools according to claim 2, wherein: the high support (17) and the low support (18) are respectively fixed on the disc base (11) through screws, and the high support (17) is connected with the bottom of the upper cabin (14) through screws; the disc base (11) is fixed at the bottom of the lower cabin (19) through screws.
6. The mechanical entanglement system suitable for polar ice layer hot melt drilling tools according to claim 2, wherein: the cable guide mechanism comprises guide wheels (1), guide wheel supports (2) and cable ducts (3), wherein the number of the guide wheel supports (2) is two, and the two guide wheel supports (2) are respectively fixed on the top of the upper end cover (13) and the bottom of the lower cabin (19) through screws; the guide wheel (1) is arranged on the guide wheel bracket (2); the cable duct (3) penetrates through the whole sealed cabin, a sealing ring is arranged at the contact position of the upper end of the cable duct (3) and the upper end cover (13), and a sealing ring is arranged at the contact position of the lower end of the cable duct (3) and the lower cabin body (19).
CN202310348450.9A 2023-04-04 2023-04-04 Mechanical type correction system suitable for polar region ice layer hot melt drilling tool Active CN116464390B (en)

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CN116464390B true CN116464390B (en) 2023-09-15

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Citations (10)

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Publication number Priority date Publication date Assignee Title
FR1113213A (en) * 1954-10-26 1956-03-26 Improvements to the methods of digging wells or galleries and to the equipment applying these methods
WO1996030616A1 (en) * 1995-03-28 1996-10-03 Japan National Oil Corporation Device for controlling the drilling direction of drill bit
RU2010112878A (en) * 2010-04-02 2011-10-10 Общество с ограниченной ответственностью "Фирма "Радиус-Сервис" (RU) HYDRAULIC BOTTOM ENGINE MISSION REGULATOR
CN102852460A (en) * 2012-08-31 2013-01-02 吉林大学 Downhole deflecting device for drilling ice layer of polar region and downhole deflecting method
CN108060896A (en) * 2018-01-24 2018-05-22 西南石油大学 The mechanical underground instrument of vertical drilling is realized using pin cam
CN207776794U (en) * 2018-01-24 2018-08-28 西南石油大学 The downhole tool of automatic vertical drilling is realized using cam four-bar mechanism
CN114086882A (en) * 2022-01-20 2022-02-25 中国地质科学院勘探技术研究所 Device and method suitable for polar ice cover drilling
CN114635644A (en) * 2022-02-23 2022-06-17 中国矿业大学 While-drilling deviation correcting device of anti-impact drilling robot for rock burst
CN114991669A (en) * 2022-06-15 2022-09-02 青岛地质工程勘察院(青岛地质勘查开发局) Intelligent drilling equipment for hydrogeological exploration
CN115788277A (en) * 2023-01-29 2023-03-14 河北正灿御景建筑工程有限公司 Soil rock drilling device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1113213A (en) * 1954-10-26 1956-03-26 Improvements to the methods of digging wells or galleries and to the equipment applying these methods
WO1996030616A1 (en) * 1995-03-28 1996-10-03 Japan National Oil Corporation Device for controlling the drilling direction of drill bit
RU2010112878A (en) * 2010-04-02 2011-10-10 Общество с ограниченной ответственностью "Фирма "Радиус-Сервис" (RU) HYDRAULIC BOTTOM ENGINE MISSION REGULATOR
CN102852460A (en) * 2012-08-31 2013-01-02 吉林大学 Downhole deflecting device for drilling ice layer of polar region and downhole deflecting method
CN108060896A (en) * 2018-01-24 2018-05-22 西南石油大学 The mechanical underground instrument of vertical drilling is realized using pin cam
CN207776794U (en) * 2018-01-24 2018-08-28 西南石油大学 The downhole tool of automatic vertical drilling is realized using cam four-bar mechanism
WO2019144507A1 (en) * 2018-01-24 2019-08-01 西南石油大学 Mechanical downhole tool for vertical well drilling using screw cam
CN114086882A (en) * 2022-01-20 2022-02-25 中国地质科学院勘探技术研究所 Device and method suitable for polar ice cover drilling
CN114635644A (en) * 2022-02-23 2022-06-17 中国矿业大学 While-drilling deviation correcting device of anti-impact drilling robot for rock burst
CN114991669A (en) * 2022-06-15 2022-09-02 青岛地质工程勘察院(青岛地质勘查开发局) Intelligent drilling equipment for hydrogeological exploration
CN115788277A (en) * 2023-01-29 2023-03-14 河北正灿御景建筑工程有限公司 Soil rock drilling device

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