CN111677451B - Coal mine underground directional drilling while-drilling hydraulic hole making device, drilling system and method - Google Patents
Coal mine underground directional drilling while-drilling hydraulic hole making device, drilling system and method Download PDFInfo
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- CN111677451B CN111677451B CN202010397189.8A CN202010397189A CN111677451B CN 111677451 B CN111677451 B CN 111677451B CN 202010397189 A CN202010397189 A CN 202010397189A CN 111677451 B CN111677451 B CN 111677451B
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- 238000005553 drilling Methods 0.000 title claims abstract description 171
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000003245 coal Substances 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000010276 construction Methods 0.000 claims abstract description 21
- 239000011435 rock Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004080 punching Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
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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
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
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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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- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
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- Geochemistry & Mineralogy (AREA)
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Abstract
The invention discloses a hydraulic while drilling cave making device, a drilling system and a method for directional drilling under a coal mine, wherein the hydraulic while drilling cave making device comprises an outer pipe, a first control valve, a second control valve and a cave making controller for controlling the opening and closing of the first control valve and the opening and closing of the second control valve; the hole making controller is arranged in the outer pipe, a flow passage for high-pressure water to flow is arranged between the hole making controller and the inner wall of the outer pipe, and a first control valve is arranged in the flow passage; the pipe wall of the outer pipe is provided with a first through hole, and the first through hole is provided with a second control valve. The hydraulic cave-building device and the hydraulic cave-building method can realize the high-pressure hydraulic cave building while drilling in the underground directional drilling construction, can complete the hydraulic cave building at the specific positions such as the coal seam hole section without lifting a drill and replacing the drill, simplify the construction process method and improve the extraction effect.
Description
Technical Field
The invention belongs to the technical field of underground drilling of coal mines, and relates to a device, a system and a method for hydraulic hole making while drilling for underground directional drilling of a coal mine, which are used for realizing hydraulic hole making while drilling in the underground directional drilling construction process.
Background
The existing directional drilling technology is widely applied to underground coal mines and is used for constructing bedding gas extraction drill holes, top/bottom plate comb-shaped gas extraction drill holes and the like, and when the existing underground directional drilling technology adopts one-step hole forming, the hole diameters of all hole sections are basically consistent; in actual production and construction, in order to improve the gas extraction effect, interval local hole sections are required to enlarge the aperture of the bedding directional hole, and comb-shaped drilling or directional perforation of a top plate and a bottom plate is required to punch multiple coal layers and draw coal, so that a certain extraction or outburst elimination effect is achieved.
According to different requirements, the current common methods are methods such as drilling tool reaming after lifting a drill, local drilling tool reaming or hydraulic punching tool replacement for punching, wherein the whole-hole section reaming of the drilling tool needs to be started from an orifice to a designed position, and the reaming engineering quantity is large; and the hole expansion by a local hole expanding drilling tool or the punching by a hydraulic punching drilling tool also needs to be drilled, and particularly for multi-branch directional holes, the process is more complicated and the engineering quantity is larger.
Therefore, in view of the defects and the problems, through research, a device, a drilling system and a method for hydraulic hole making while drilling for directional drilling in the underground coal mine are designed, and are used for realizing hydraulic hole making while drilling in the construction process of the underground directional drilling to overcome the defects.
Disclosure of Invention
In order to solve the problems, the invention provides a hydraulic while-drilling hole making device, a drilling system and a method for directional drilling in an underground coal mine, which solve the problems of complex process and large hole enlarging engineering amount in the conventional hole enlarging drilling process.
In order to solve the technical problems, the invention adopts the following technical scheme:
the hydraulic while drilling hole making device for directional drilling in the underground coal mine comprises an outer pipe, a first control valve, a second control valve and a hole making controller for controlling the opening and closing of the first control valve and the opening and closing of the second control valve;
the hole making controller is arranged in the outer pipe, a flow passage through which high-pressure water flows is arranged between the hole making controller and the inner wall of the outer pipe, and a first control valve is arranged in the flow passage; the pipe wall of the outer pipe is provided with a first through hole, and the first through hole is provided with a second control valve.
Specifically, a jet nozzle is arranged in the first through hole.
Specifically, the whole cave-making controller is of a rod-shaped structure, the cave-making controller is supported in the outer pipe through a fixing sleeve fixed in the outer pipe, and a second through hole communicated with the overflowing channel is formed in the fixing sleeve.
Furthermore, the outer tube is also provided with a centralizer for centralizing the hole-making controller, and the centralizer is provided with a third through hole communicated with the overflowing channel.
The invention also discloses a directional drilling while-drilling hydraulic cave drilling system under the coal mine, which comprises a directional drill bit, a screw drilling tool, the hydraulic cave drilling while-drilling device recorded by the invention, a track measuring instrument, a cable-through drill rod and an orifice monitor which are sequentially connected;
the hydraulic while drilling cave making device is arranged between the screw drill and the track measuring instrument, wherein the track measuring instrument is connected with the cave making controller; the first control valve is positioned on the side of the screw drill, and the second control valve is positioned on the side of the track measuring instrument.
Furthermore, the cable drill rod is connected with a water feeder, and the water feeder is connected with a high-pressure water pump; the high-pressure water pump is provided with a low-pressure gear for drilling and a high-pressure gear for hydraulic hole making.
The invention also discloses a method for directional drilling while drilling hydraulic cave-making drilling under the coal mine, which adopts the drilling system recorded by the invention to drill, and comprises the following steps:
Compared with the prior art, the invention has the beneficial effects that:
(1) the hydraulic cave-making device and the hydraulic cave-making method can realize the hydraulic cave-making with high pressure while drilling in the underground directional drilling construction, can complete the hydraulic cave-making at specific positions such as a coal seam hole section without lifting a drill and replacing the drill, simplify the construction process method and improve the extraction effect.
(2) The drilling system adopts a high-pressure-resistant drilling tool, bears large pressure and does not influence normal drilling; the high-pressure water pump is provided with a drilling gear and a hydraulic hole making gear, so that the construction operation is simple and convenient; and a wired communication measurement and energy supply mode is adopted, so that the stability is good and the reliability is high.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
Fig. 1 is a schematic structural view of a hydraulic while drilling apparatus according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of a hydraulic while drilling cave-making drilling system described in embodiment 1 of the present invention.
The reference numerals in the figures denote:
1-a directional drill bit, 2-a screw drilling tool, 3-a hydraulic drilling device while drilling, 4-a track measuring instrument, 5-a cable-passing drill rod, 6-a water feeder, 7-a high-pressure water pump, 8-an orifice monitor, 9-a rubber pipe and 10-an outer pipe of the track measuring instrument;
31-an outer pipe, 32-a first control valve, 33-a second control valve, 34-a cave-making controller, 35-an overflowing channel, 36-a first through hole, 37-a fixing sleeve and 38-a centralizer.
The details of the present invention are explained in further detail below with reference to the drawings and the detailed description.
Detailed Description
The drilling tool structure used in the coal mine underground directional drilling while-drilling hydraulic cave drilling system is a common directional drilling tool and mainly comprises a directional drilling bit 1, a screw drilling tool 2, a track measuring instrument 4, a non-magnetic drilling rod, a cable-through drilling rod 5 and the like.
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
In the present invention, unless otherwise specified, the use of the terms of orientation such as "upper" and "lower" generally means that they are defined with reference to the drawing plane of the corresponding drawing, and "inner" and "outer" means that they are defined with reference to the outline of the corresponding drawing.
Example 1
The embodiment discloses a hydraulic while drilling device for directional drilling in an underground coal mine, which mainly comprises an outer pipe 31, a first control valve 32, a second control valve 33 and a hole making controller 34 for controlling the opening and closing of the first control valve 32 and the opening and closing of the second control valve 33 as shown in fig. 1.
Wherein, the cave-making controller 34 is arranged in the outer tube 31, a flow-through channel 35 for high pressure water to flow is arranged between the cave-making controller 34 and the inner wall of the outer tube 31, and a first control valve 32 is arranged in the flow-through channel 35. The outer tube 31 is provided with a first through hole 36 on the wall, and the second control valve 33 is arranged in the first through hole 36.
The outer pipe 31 is designed to be a high pressure resistant structure, and normal use is not affected under the action of bearing high pressure water.
The first control valve 32 and the second control valve 33 in this embodiment are commercially available solenoid valves.
In the present embodiment, the hole-making controller 34 is provided with a control circuit, a communication interface, and the like, and the control circuit is a conventional logic circuit.
The outer contour of the cavitation controller 34 in this embodiment is a rod-shaped structure, the cavitation controller 34 is supported in the outer tube 31 by a fixing sleeve 37 fixed in the outer tube 31, and a second through hole (not shown) communicating with the flow passage 35 is provided on the fixing sleeve 37.
Specifically, the fixing sleeve 37 is an annular sleeve, the outer diameter of the annular sleeve is slightly larger than the inner diameter of the outer tube 31, and the annular sleeve is nested in the outer tube 31. The first through holes 36 are uniformly provided in plurality around the circumference of the outer tube 31.
Preferably, the cross-sectional area of the overflow channel 35 is larger than the cross-sectional area of the first through hole 36, and when the overflow channel 35 is closed, water is suppressed at the first through hole 36, so that high-pressure water is formed to jet from the first through hole 36 to ream and cave the side of the coal seam.
Further, a jet nozzle may be disposed in the first through hole 36, such that high-pressure water passes through the jet nozzle to form high-pressure water jet, thereby breaking and making cave for the surrounding coal.
Further, in order to increase the stability of the cavitation controller 34 in the outer tube, a centralizer 38 for centralizing the cavitation controller 34 is disposed in the outer tube 31, and a third through hole (not labeled in the figure) communicating with the flow passage 35 is disposed on the centralizer 38. A centralizer 38 and a retaining sleeve 37 are mounted at both ends of the controller.
Example 2
The embodiment discloses a directional drilling while-drilling hydraulic cave drilling system in a coal mine, and as shown in fig. 2, the drilling system mainly comprises a directional drill bit 1, a screw drill 2, a hydraulic cave drilling device 3 recorded in the embodiment 1, a track measuring instrument 4 and a cable drill rod 5 which are sequentially connected. In addition to this, a water feeder 6, a high-pressure water pump 7, and an orifice monitor 8 are provided.
Wherein, the directional drill bit 1, the screw drill 2, the water feeder 6 and the like are all in the conventional configuration.
The hydraulic while drilling cave making device 3 is arranged between the screw drill 2 and the track measuring instrument 4, wherein the track measuring instrument 4 is connected with the cave making controller 1. The second control valve 33 and the first control valve 32 are connected at the middle position of the hole making controller 34 and at the end near the screw drill 2, respectively, so that the first control valve 32 is located on the screw drill side and the second control valve 33 is disposed on the trajectory measuring instrument side.
The cavitation controller 34 is connected to the orifice monitor 8 via a cable, and the cavitation controller 34 controls the opening and closing of the first control valve 32 and the second control valve 33 upon receiving a command signal transmitted from the orifice monitor 8.
The track measuring instrument 4 is arranged in an outer tube 10 of the track measuring instrument, and the outer tube 10 of the track measuring instrument is made of nonmagnetic materials and belongs to a conventional measurement device while drilling. The casing structure of the track measuring instrument is designed into a high-pressure resistant structure, and normal use is not influenced under the action of bearing high-pressure water pressure.
The high-pressure water pump 7 is connected with the water feeder 6 through a rubber tube 9, and the high-pressure water pump 7 is provided with a low-pressure gear for drilling and a high-pressure gear for hydraulic hole making. The low-pressure output flow and pressure are used for normal directional drilling construction, and the high-pressure output flow and pressure are used for high-pressure hydraulic cave-making.
Preferably, a section of non-magnetic drill rod is arranged between the track measuring instrument 4 and the cable drill rod 5, and a section of non-magnetic drill rod is arranged between the hydraulic hole making device while drilling 3 and the screw drill tool, so that the interference of an external magnetic field is avoided.
Through setting up logical cable drilling rod 5, adopt wired communication measurement and energy supply mode, stability is good, and the reliability is high.
By the drilling system, high-pressure hydraulic cave construction while drilling in underground directional drilling construction can be realized, hydraulic cave construction at specific positions such as coal seam hole sections can be completed without lifting and replacing drilling tools, the construction process is simplified, and the extraction effect is improved.
Example 3
The embodiment discloses a method for directional drilling while drilling hydraulic cave-making drilling in an underground coal mine, wherein the method adopts the drilling system described in the embodiment 2 to drill.
If the water pump is not provided with a high-pressure gear and a low-pressure gear, the drilling method comprises the following steps:
And 3, stopping the pump to relieve pressure after hydraulic hole making is finished, sending a stop command to the orifice monitor 8, and controlling the first control valve 32 to be opened and the second control valve 33 to be closed after the hole making controller 34 receives the command. At this time, the overflowing channel 35 is opened, and the first through hole 36 is closed;
Preferably, in order to increase the hydraulic cavitation effect, the water pump is provided with a high pressure gear and a low pressure gear, and the drilling method comprises the following steps:
By the method, high-pressure hydraulic cave construction can be realized while drilling in underground directional drilling construction, hydraulic cave construction at specific positions such as coal seam hole sections can be completed without lifting a drill and replacing a drilling tool, the construction process is simplified, and the extraction effect is improved.
In the above description, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be understood broadly, and may be, for example, fixedly connected or detachably connected or integrated; either a direct connection or an indirect connection, and the like. The specific meaning of the above terms in the present technical solution can be understood according to specific situations by a person of ordinary skill in the art.
The respective specific technical features described in the above-described embodiments may be combined in any suitable manner without contradiction as long as they do not depart from the gist of the present invention, and should also be regarded as being disclosed in the present invention.
Claims (5)
1. The method is characterized in that a coal mine underground directional drilling while-drilling hydraulic cave-making drilling system is adopted for drilling;
the underground coal mine directional drilling while-drilling hydraulic cave-making drilling system comprises a directional drill bit (1), a screw drilling tool (2), a track measuring instrument (4), a cable-through drill rod (5), an orifice monitor (8) and a while-drilling hydraulic cave-making device (3) which are sequentially connected; the hydraulic while drilling cave making device (3) is arranged between the screw drilling tool (2) and the track measuring instrument (4);
the hydraulic while drilling cave making device (3) comprises an outer pipe (31), a first control valve (32), a second control valve (33) and a cave making controller (34) for controlling the opening and closing of the first control valve (32) and the opening and closing of the second control valve (33); the hole-making controller (34) is arranged in the outer pipe (31), a flow-through channel (35) for high-pressure water to flow is arranged between the hole-making controller (34) and the inner wall of the outer pipe (31), and a first control valve (32) is arranged in the flow-through channel (35); a first through hole (36) is formed in the wall of the outer pipe (31), and a second control valve (33) is arranged in the first through hole (36);
wherein, the track measuring instrument (4) is connected with the hole-making controller (34); the first control valve (32) is positioned on the side of the screw drill (2), and the second control valve (33) is positioned on the side of the track measuring instrument (4);
the drilling method comprises the following steps:
step 1, a well-installed drilling tool is put into a hole, high-pressure water is input into the drilling tool, the high-pressure water flows to the bottom of the hole through an overflow channel (35) of a hydraulic hole-making device (3) while drilling, a screw drilling tool (2) is driven to run rock crushing, directional drilling construction is started, and a constructed directional drilling track is measured through a track measuring instrument (4);
step 2, when drilling to a preset depth or position, stopping drilling, sending a hole making command through an orifice monitor (8), controlling a first control valve (32) to be closed and a second control valve (33) to be opened by a hole making controller (34), enabling high-pressure water to enter a hydraulic hole making device (3) while drilling and jet out from a first through hole (36), and operating a drilling tool to perform backward rotary hydraulic hole making or forward rotary hydraulic hole making;
step 3, after hydraulic hole making is completed, stopping inputting high-pressure water into the drilling tool, sending a stop command to the orifice monitor (8), and controlling the first control valve (32) to be opened and the second control valve (33) to be closed by the hole making controller (34);
step 4, inputting high-pressure water into the drilling tool again, and continuing normal directional drilling according to the step 1; and (3) during the drilling process, if hydraulic hole making is required, operating according to the steps 2 to 3.
2. The method for directional drilling while drilling the hydraulic power cave in the coal mine underground according to claim 1, wherein the cable drill rod (5) is connected with a water feeder (6), and the water feeder (6) is connected with a high-pressure water pump (7); the high-pressure water pump (7) is provided with a low-pressure gear for drilling and a high-pressure gear for hydraulic cave making.
3. The method for directional drilling while drilling hydraulic cavitation in the coal mine underground according to claim 1, characterized in that a jet nozzle is arranged in the first through hole (36).
4. The method for directional drilling while drilling hydraulic power cave drilling in coal mine underground according to claim 1, characterized in that the cave-making controller (34) is integrally rod-shaped, the cave-making controller (34) is supported in the outer tube (31) through a fixing sleeve (37) fixed in the outer tube (31), and the fixing sleeve (37) is provided with a second through hole communicated with the overflowing channel (35).
5. The method for directional drilling while drilling hydraulic cavitation in the coal mine underground according to claim 1, characterized in that a centralizer (38) for centralizing the cavitation controller (34) is further arranged in the outer pipe (31), and a third through hole communicated with the overflowing channel (35) is arranged on the centralizer (38).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010397189.8A CN111677451B (en) | 2020-05-12 | 2020-05-12 | Coal mine underground directional drilling while-drilling hydraulic hole making device, drilling system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010397189.8A CN111677451B (en) | 2020-05-12 | 2020-05-12 | Coal mine underground directional drilling while-drilling hydraulic hole making device, drilling system and method |
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| CN111677451A CN111677451A (en) | 2020-09-18 |
| CN111677451B true CN111677451B (en) | 2022-05-10 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412335A (en) * | 2020-11-06 | 2021-02-26 | 山西晋城无烟煤矿业集团有限责任公司 | Directional hydraulic coal drawing device and method |
| CN112593998B (en) * | 2020-12-11 | 2023-10-13 | 山西晋煤集团技术研究院有限责任公司 | Progressive gas control method for soft low-permeability outburst coal seam area |
| CN113090186B (en) * | 2021-03-22 | 2023-01-31 | 中煤科工集团西安研究院有限公司 | Coal mine underground bundling type large-diameter directional drilling and expanding integrated tool and method |
| CN113107364B (en) * | 2021-03-30 | 2022-06-24 | 中煤科工集团西安研究院有限公司 | Integrated drilling tool for directional drilling and reaming underground coal mine and directional drilling reaming-while-drilling method |
| CN113266281B (en) * | 2021-05-26 | 2023-08-22 | 中煤科工集团沈阳研究院有限公司 | Directional rotary drilling tool and use method thereof |
| CN114033312B (en) * | 2021-11-23 | 2023-05-26 | 河南理工大学 | Hydraulic combined mechanical reaming and permeability-increasing device and method |
| CN114876373A (en) * | 2022-07-13 | 2022-08-09 | 陕西太合工程技术服务有限责任公司 | Integrated drilling and punching equipment and method for directional long drilling in underground coal mine |
| CN114893127A (en) * | 2022-07-14 | 2022-08-12 | 陕西太合工程技术服务有限责任公司 | Directional hydraulic drilling and mining integrated mining device and method for thin coal seam |
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| CN109915011B (en) * | 2015-02-24 | 2020-11-06 | 特种油管有限责任公司 | Guiding system for downhole hydraulic injection nozzle and steerable borehole excavation apparatus |
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| CN201810206U (en) * | 2009-09-30 | 2011-04-27 | 重庆飞尔达机械有限责任公司 | High pressure water jet drilling and expanding integrated device |
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