CN107620578B - Armoured cable type electric mechanical double-pipe coring drilling tool for drilling ice layer - Google Patents
Armoured cable type electric mechanical double-pipe coring drilling tool for drilling ice layer Download PDFInfo
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- CN107620578B CN107620578B CN201711060963.0A CN201711060963A CN107620578B CN 107620578 B CN107620578 B CN 107620578B CN 201711060963 A CN201711060963 A CN 201711060963A CN 107620578 B CN107620578 B CN 107620578B
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- 238000005553 drilling Methods 0.000 title claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000001802 infusion Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000008676 import Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 19
- 239000000428 dust Substances 0.000 abstract description 15
- 238000009825 accumulation Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 108010066278 cabin-4 Proteins 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The invention discloses an armored cable type electric mechanical double-pipe coring drilling tool for drilling an ice layer, which comprises a cable terminal, a back-twisting device, a pressure cabin, a driving motor, a speed changing system and a double-pipe coring system, wherein the cable terminal is arranged at the top end of a drilling tool body, the back-twisting device, the pressure cabin, the driving motor, the speed changing system and the double-pipe coring system are sequentially arranged at the lower part of the cable terminal, the driving motor drives the speed changing system and the double-pipe coring system to work, the double-pipe coring system consists of an ice pipe, an outer pipe and an ice drill bit, the ice pipe is inserted into the outer pipe, the ice drill bit is connected to the bottoms of the ice pipe and the outer pipe, an ice chip chamber is arranged at the upper part of an inner cavity of the ice pipe, and the inner cavity of the ice drill bit is sequentially communicated with the inner cavity of the lower part of the ice pipe and the inner cavity of the ice chip chamber, and the beneficial effects that: the flow speed of the drilling fluid at the bottom of the hole is improved, the carrying efficiency of ice dust is enhanced, the accumulation of the ice dust at the bottom of the hole and the adhesion of the ice dust on a drill bit can be effectively avoided, and the risks of complex accidents such as sticking the drill bit are reduced.
Description
Technical Field
The invention relates to a double-tube coring drilling tool, in particular to an armored cable type electric mechanical double-tube coring drilling tool for drilling an ice layer.
Background
At present, the north and south poles of the earth are not only global drivers, but also global cold sources, and play an irreplaceable key role in global climate change research. The polar ice cover has the characteristics of large information quantity, good fidelity, high time resolution, large time scale range, wide distribution area and the like compared with other weather substitution indexes, so that the polar ice cover becomes one of the most critical areas for global climate change research. The development of deep ice center drilling projects and the acquisition of high-quality ice centers are important guarantees for the scientific research, and have important scientific significance and social value for human social development and natural cognition. The polar region drilling core is complex under the influence of severe weather and the ice and snow environment on the earth surface. The armored cable type electromechanical coring drilling technology has the advantages of light weight, low power consumption, high drilling efficiency and the like, and is widely applied to polar deep ice core drilling. However, when the method is adopted, after the drilling fluid is discharged from the water pump, the drilling fluid descends through an annular gap between the drilling tool and the hole wall and enters the central passage through the bottom lip surface of the drill bit to return. The flow speed of the drilling fluid near the bottom lip surface of the drill bit is low under the restriction of the working parameters of the built-in water pump. When the drill bit reaches a warm ice layer, the ice chips are in a melting or semi-melting state due to the heat generated by rotary cutting, the ice chips are adhered and coalesced into clusters, the flow rate of drilling fluid is insufficient to timely take the ice chips away from the bottom of a hole, the ice chips are adhered to a cutting tool of the drill bit or other local positions of the drill bit, the drilling efficiency is affected, the circulation of the drilling fluid is affected, the circulation is further deteriorated, the ice chips are accumulated at the bottom of the hole, and the drilling sticking risk is greatly increased. Therefore, how to improve the carrying efficiency of the ice dust and avoid the adhesion and accumulation of the ice dust at the bottom of the hole, thereby reducing the risks of complex accidents such as sticking the drill and the like, and becoming the technical problem to be solved urgently for armored cable type electromechanical drilling tools in the deep ice core drilling engineering.
Disclosure of Invention
The invention aims to improve the carrying efficiency of ice dust, thereby avoiding accumulation of the ice dust at the bottom of a hole and avoiding or reducing the risk of sticking to a drill.
The invention provides an armored cable type electric mechanical double-pipe coring drilling tool for drilling an ice layer, which comprises a cable terminal, a back-twisting device, a pressure cabin, a driving motor, a speed changing system and a double-pipe coring system, wherein the cable terminal is arranged at the top end of a drilling tool body, the back-twisting device, the pressure cabin, the driving motor, the speed changing system and the double-pipe coring system are sequentially arranged at the lower part of the cable terminal, the driving motor drives the speed changing system and the double-pipe coring system to work, the double-pipe coring system consists of an ice pipe, an outer pipe and an ice drill bit, wherein the ice drill bit is inserted into the outer pipe, the ice drill bit is connected to the bottoms of the ice pipe and the outer pipe, an ice chip chamber is arranged at the upper part of the inner cavity of the ice pipe, the inner cavity of the ice drill bit is sequentially communicated with the inner cavity at the lower part of the ice pipe and the inner cavity of the ice chip chamber, a through hole is formed in the side wall at the top end of the ice pipe, an infusion pipeline is formed between the inner wall of the outer pipe and the outer wall of the ice pipe, a nozzle is formed around the nozzle is formed, the inner cavity of the nozzle is communicated with the outlet at the lower end of the infusion pipeline, the inner cavity of the ice drill bit, the through hole is formed between the through hole on the side wall of the ice chip chamber and the side wall at the upper end of the ice pipe and the ice drill bit.
A slip ring is arranged between the cable terminal and the anti-twisting device.
The position of the through hole is provided with a water pump at the top end of the ice tube, and the water pump is connected with the driving motor and driven by the driving motor to work.
The inner pipe wall of the ice dust chamber is surrounded by a filter screen.
A fixing frame or a bearing is arranged between the inner wall of the outer tube and the outer wall of the ice tube, and a through hole is arranged in the middle of the fixing frame or the bearing and is communicated with the infusion channel.
The diameter of the nozzle of the peripheral ring of the ice drill bit is 3-5mm, and the nozzle of the nozzle corresponds to the position of the front cutter face of the cutting tool on the ice drill bit.
The cable terminal, the slip ring, the anti-torsion device, the pressure cabin, the driving motor, the speed change system, the ice drill bit and the water pump are all assembled by the existing equipment, so that specific models and specifications are not further described.
The working principle of the invention is as follows:
when in rotary drilling, the armored cable transmits the surface power to the motor in the electromechanical drilling tool to work. The driving motor drives the double-tube coring system to rotate through the speed change system. When a double-acting double-pipe drilling tool is formed by the fixing frame between the outer pipe and the ice pipe, the outer pipe and the ice pipe of the double-pipe coring system simultaneously rotate and drive the ice drill bit to cut an ice layer, so that drilling is realized. When a bearing is assembled between the outer pipe and the ice pipe to form a single-action double-pipe drilling tool, the outer pipe of the double-pipe coring system rotates to drive the ice drill bit to cut the ice layer, the ice pipe does not rotate, disturbance to the ice core is reduced, and circulating pressure consumption of drilling fluid in the ice pipe and the ice chip chamber is reduced. The driving motor drives the water pump to work simultaneously, drilling fluid enters the infusion channel between the outer tube and the ice tube through the through hole at the upper end of the ice tube and is sprayed out at a high speed through the nozzle on the ice drill bit to form high-speed jet flow, the cutting tool is cooled and impacted to carry ice scraps, the size of the ice scraps can be reduced, the ice scraps are effectively prevented from agglomerating, and the ice scraps are taken away from the bottom of the hole in time. The drilling fluid then passes up through the annular gap between the ice drill bit, the ice center tube and the ice core to the ice chip chamber. The drilling fluid is discharged through a filter screen on the inner pipe of the ice dust chamber and is pumped by a water pump to form circulation. Under the action of the filter screen, the ice scraps are retained in the ice scraps chamber, and the ice scraps are lifted to the surface for treatment after the drilling is finished. And when the return time is over, the ice core blocking device on the ice drill bit blocks off the ice core, the ice core is left in the ice core tube, and the drilling tool is lifted to the ground surface and then is treated together with the ice scraps.
The invention has the beneficial effects that:
the double-pipe design of the bottom coring drilling tool system of the armored cable type electric mechanical coring drilling tool for drilling the ice layer forms an annular space in the drilling tool below the circulation system, and a plurality of nozzles are arranged on the ice drilling bit. Drilling fluid descends from the annular space and forms a high velocity jet as it passes through the bit nozzle. The high-speed jet flow directly acts on the front cutter surface of the drill bit cutting tool, so that the cutting tool can be directly cooled, the temperature of the cutting tool is reduced, and the jet flow impact force can break large-size ice scraps with high plasticity into small ice scraps. In addition, the high-speed jet greatly improves the flow speed of drilling fluid near the cutting tool, enhances the carrying capacity of the drilling fluid, and is favorable for timely taking ice scraps away from the bottom of the hole. When the drilling tool structure is a single-action double-pipe coring drilling tool, the inner pipe does not rotate along with the drilling tool, so that disturbance of the drilling tool to the ice core is reduced, the ice chip chamber and the inner pipe of the ice core pipe do not rotate, circulation pressure consumption of drilling fluid is greatly reduced, flow of the water pump is improved, and the carrying effect of ice chips is further improved. Therefore, the armored cable type electric mechanical double-pipe coring drilling tool greatly improves the flow field at the bottom of the hole, improves the flow velocity at the bottom of the drilling fluid hole, enhances the carrying efficiency of ice dust, can effectively avoid the accumulation of the ice dust at the bottom of the hole and the adhesion of the ice dust on a drill bit, and reduces the risks of complex accidents such as sticking the drill and the like.
Drawings
Fig. 1 is a schematic diagram of the whole structure of the drilling tool according to the present invention.
Fig. 2 is a schematic structural diagram of the dual-tube coring system according to the present invention.
Fig. 3 is a schematic diagram of a cross-sectional structure of the ice drill bit according to the invention.
1. The device comprises a cable terminal 2, a back-twisting device 3, a pressure cabin 4, a driving motor 5, a speed changing system 6, a double-pipe coring system 7, an ice pipe 8, an outer pipe 9, an ice drill bit 10, an ice dust chamber 11, a through hole 12, an infusion channel 13, a nozzle 14, a slip ring 15, a water pump 16, a filter screen 17, a fixing frame 18, a bearing 19 and a front cutter surface of a cutting tool.
Detailed Description
Please refer to fig. 1 to 3:
the invention provides an armored cable type electric mechanical double-tube coring drilling tool for drilling ice layers, which comprises a cable terminal 1, a back-twisting device 2, a pressure cabin 3, a driving motor 4, a speed changing system 5 and a double-tube coring system 6, wherein the cable terminal 1 is arranged at the top end of a drilling tool body, the back-twisting device 2, the pressure cabin 3, the driving motor 4, the speed changing system 5 and the double-tube coring system 6 are sequentially arranged at the lower part of the cable terminal 1, the driving motor 4 drives the speed changing system 5 and the double-tube coring system 6 to work, the double-tube coring system 6 consists of an ice tube 7, an outer tube 8 and an ice drill bit 9, the ice tube 7 is inserted in the outer tube 8, the ice drill bit 9 is connected at the bottoms of the ice tube 7 and the outer tube 8, the upper portion of the inner cavity of the ice core tube 7 is provided with an ice chip chamber 10, the inner cavity of the ice drill bit 9 is sequentially communicated with the inner cavity of the lower portion of the ice core tube 7 and the inner cavity of the ice chip chamber 10, a through hole 11 is formed in the side wall of the top end of the ice core tube 7, an infusion channel 12 is formed between the inner wall of the outer tube 8 and the outer wall of the ice core tube 7, a nozzle 13 is formed in the periphery of the ice drill bit 9, an inlet of the nozzle 13 is communicated with an outlet of the lower end of the infusion channel 12, and a circulation channel is formed by the inner cavity of the ice drill bit 9, the inner cavity of the lower portion of the ice core tube 7, the inner cavity of the ice chip chamber 10, the through hole 11 in the side wall of the upper end of the ice core tube 7, the infusion channel 12 between the outer tube 8 and the ice core tube 7 and the nozzle 13 on the ice drill bit 9.
A slip ring 14 is fitted between the cable termination 1 and the anti-twist device 2.
The position of the through hole 11 arranged at the top end of the ice tube 7 is provided with a water pump 15, and the water pump 15 is connected with the driving motor 4 and driven by the driving motor 4 to work.
The inner pipe wall of the ice dust chamber 10 is surrounded by a filter screen 16.
A fixing frame 17 or a bearing 18 is arranged between the inner wall of the outer tube 8 and the outer wall of the ice tube 7, and a through hole is arranged in the middle of the fixing frame 17 or the bearing 18 and is communicated with the infusion channel 12.
The diameter of the nozzle 13 of the periphery of the ice drill bit 9 is 3-5mm, and the nozzle opening of the nozzle 13 corresponds to the position of the front cutter surface 19 of the cutting tool on the ice drill bit 9.
The cable terminal 1, the slip ring 14, the anti-twisting device 2, the pressure cabin 3, the driving motor 4, the speed changing system 5, the ice drill bit 9 and the water pump 15 are all assembled by the existing equipment, so specific models and specifications are not further described.
The working principle of the invention is as follows:
during rotary drilling, the armored cable transmits surface power to the driving motor 4 in the electromechanical drilling tool to work. The driving motor 4 drives the double-tube coring system 6 to rotate through the speed change system 5. When a double-acting double-pipe drilling tool is formed by the fixing frame 17 between the outer pipe 8 and the ice pipe 7, the outer pipe 8 and the ice pipe 7 of the double-pipe coring system 6 simultaneously rotate and drive the ice drill bit 9 to cut ice layers, so that drilling is realized. When a bearing 18 is assembled between the outer tube 8 and the ice tube 7 to form a single-action double-tube drilling tool, the outer tube 8 of the double-tube coring system 6 rotates to drive the ice drill bit 9 to cut an ice layer, the ice tube 7 does not rotate, disturbance to an ice core is reduced, and circulating pressure consumption of drilling fluid in the ice tube 7 and the ice chip chamber 10 is reduced. The driving motor 4 drives the water pump 15 to work at the same time, drilling fluid enters the infusion channel 12 between the outer tube 8 and the ice center tube 7 through the through hole 11 at the upper end of the ice center tube 7 and descends, and is ejected out at a high speed through the nozzle 13 on the ice drill bit 9 to form a high-speed jet flow, so that the cutting tool is cooled and impacted to carry ice scraps, the size of the ice scraps can be reduced, the ice scraps are effectively prevented from agglomerating, and the ice scraps are timely taken away from the bottom of the hole. The drilling fluid then passes back up the annular gap between the ice drill bit 9, the ice tube 7 and the ice core to the ice chip chamber. The drilling fluid is discharged through a filter screen 16 on the inner tube of the ice dust chamber 10 and is pumped by a water pump 15 to form a circulation. Under the action of the filter screen 16, the ice scraps are retained in the ice scraps chamber 10, and the ice scraps are lifted to the surface for treatment after the drilling back time is finished. And when the return time is over, the ice core blocking device on the ice drill bit 9 blocks off the ice core, the ice core is left in the ice core pipe 7, and the drilling tool is lifted to the ground surface and then is processed together with the ice scraps.
Claims (2)
1. The utility model provides an armoured cable formula electric mechanical double-barrelled drilling tool for ice layer is bored, including the cable termination, turn round the device in the back, the pressure cabin, driving motor, speed change system and double-barrelled system of coring, wherein the cable termination sets up the top at the drilling tool body, turn round the device in the back, the pressure cabin, driving motor, speed change system and double-barrelled system of coring establish in proper order in the lower part at the cable termination, driving motor drive speed change system and double-barrelled system of coring work, double-barrelled system of coring comprises the ice core pipe, outer tube and ice drill bit, wherein the ice core pipe is inserted and is established in the outer tube, the bottom at ice core pipe and outer tube is connected to the ice drill bit, the upper portion of ice core pipe inner chamber is provided with the ice bits room, the inner chamber of ice drill bit and ice core pipe lower part inner chamber and ice bits room's inner chamber are linked together in proper order, the through-hole has been seted up on the lateral wall at ice core pipe top's the inner wall, be formed with the transfer line between the inner wall of outer tube and the ice core pipe outer wall, the nozzle has been seted up to the border of ice drill bit, the import of nozzle is linked together with the export of transfer line lower extreme, the inner chamber of ice drill bit, ice bit lower part inner chamber, the through-hole and ice bit side wall, the through-hole and the through-hole on the side wall and the upper side wall of ice bit side wall and ice bit form the circulation channel, the characteristics lies in the circulation channel. The water pump is assembled at the position where the through hole is arranged at the top end of the ice tube, is connected with the driving motor and is driven by the driving motor to work; a bearing is arranged between the inner wall of the outer tube and the outer wall of the ice tube, and a through hole is arranged in the middle of the bearing and is communicated with the infusion channel.
2. The armored cable type electromechanical double-tube coring drilling tool for drilling ice layers according to claim 1, wherein: the diameter of the nozzle of the peripheral ring of the ice drill bit is 3-5mm, and the nozzle of the nozzle corresponds to the position of the front cutter face of the cutting tool on the ice drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711060963.0A CN107620578B (en) | 2017-11-02 | 2017-11-02 | Armoured cable type electric mechanical double-pipe coring drilling tool for drilling ice layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711060963.0A CN107620578B (en) | 2017-11-02 | 2017-11-02 | Armoured cable type electric mechanical double-pipe coring drilling tool for drilling ice layer |
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| Publication Number | Publication Date |
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| CN107620578A CN107620578A (en) | 2018-01-23 |
| CN107620578B true CN107620578B (en) | 2023-12-12 |
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| CN201711060963.0A Active CN107620578B (en) | 2017-11-02 | 2017-11-02 | Armoured cable type electric mechanical double-pipe coring drilling tool for drilling ice layer |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625775B (en) * | 2018-07-09 | 2023-09-15 | 吉林大学 | Rotary cutting type ice layer hot melting drilling device |
| CN109042568A (en) * | 2018-09-30 | 2018-12-21 | 滦南建国科技有限公司 | The drilling equipment of circular pipe type ice-breaking on ice |
| CN110454085B (en) * | 2019-09-10 | 2020-06-09 | 吉林大学 | Armored cable type electric mechanical impact rotary drilling tool for polar drilling |
| CN111255375A (en) * | 2020-02-18 | 2020-06-09 | 吉林大学 | Plasma ice layer drill bit and plasma ice layer drilling equipment |
| CN111236838A (en) * | 2020-03-02 | 2020-06-05 | 吉林大学 | Ice layer hole wall coring system and coring method |
| CN111307505B (en) * | 2020-03-20 | 2021-05-25 | 吉林大学 | Ice layer high-temperature flame ice melting drilling tool |
| CN112324374B (en) * | 2021-01-04 | 2021-04-20 | 成都理工大学 | Stress-preserving coring device and method |
| CN113216834B (en) * | 2021-06-21 | 2022-06-10 | 吉林大学 | Hole wall directional hot melting coring drilling tool for ice layer |
| CN114215489B (en) * | 2021-12-24 | 2022-09-23 | 吉林大学 | Dry hole type thermal shock rotary coring drilling tool |
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| CN102828689A (en) * | 2012-07-25 | 2012-12-19 | 吉林大学 | Cable suspending type air partial reverse circulating motor mechanical core bit |
| CN103643913A (en) * | 2013-12-05 | 2014-03-19 | 吉林大学 | Ice layer air turbine reverse circulation continuous coring downhole power drilling tool |
| CN207377523U (en) * | 2017-11-02 | 2018-05-18 | 吉林大学 | A kind of ice sheet drilling two-tube core drill of armored cable formula motor machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO332113B1 (en) * | 2010-08-05 | 2012-06-25 | Tomax As | Device at pump located at a drill bit. |
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2017
- 2017-11-02 CN CN201711060963.0A patent/CN107620578B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828689A (en) * | 2012-07-25 | 2012-12-19 | 吉林大学 | Cable suspending type air partial reverse circulating motor mechanical core bit |
| CN103643913A (en) * | 2013-12-05 | 2014-03-19 | 吉林大学 | Ice layer air turbine reverse circulation continuous coring downhole power drilling tool |
| CN207377523U (en) * | 2017-11-02 | 2018-05-18 | 吉林大学 | A kind of ice sheet drilling two-tube core drill of armored cable formula motor machine |
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