CN109083594B - Coal seam hydraulic direction adjustable drilling device - Google Patents
Coal seam hydraulic direction adjustable drilling device Download PDFInfo
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- CN109083594B CN109083594B CN201810943024.9A CN201810943024A CN109083594B CN 109083594 B CN109083594 B CN 109083594B CN 201810943024 A CN201810943024 A CN 201810943024A CN 109083594 B CN109083594 B CN 109083594B
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- water inlet
- joint
- hole
- water
- water outlet
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- 238000005553 drilling Methods 0.000 title claims abstract description 25
- 239000003245 coal Substances 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 125
- 210000001503 joint Anatomy 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 claims description 20
- 239000011148 porous material Substances 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- 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
-
- 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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- 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)
- Nozzles (AREA)
Abstract
The invention provides a coal seam hydraulic direction adjustable drilling device which comprises a nozzle, an intermediate joint, a water inlet joint and a rotary connecting assembly, wherein the nozzle is arranged at the middle part of the nozzle; the water outlet end of the intermediate joint is fixedly connected with the nozzle, the end face of the water inlet end of the intermediate joint sinks to form a spherical groove, the water outlet end of the water inlet joint is of a spherical structure and is embedded in the spherical groove, and the intermediate joint and the water inlet joint can rotate relatively; the water inlet joint is coaxially provided with a main water inlet channel, the water inlet joint is provided with four direction adjusting channels, and the direction adjusting channels are uniformly arranged along the circumferential direction of the main water inlet channel; the spherical surface of the water outlet end of the water inlet joint is provided with four limiting grooves, the direction adjusting channel is communicated with the limiting grooves, and the side wall of the spherical surface groove of the middle joint is provided with four direction adjusting water outlet holes; the rotating connecting assembly is arranged in the limiting groove and the direction adjusting water outlet hole; the hole forming efficiency of the beam-shaped holes can be improved.
Description
Technical Field
The invention relates to coal mine construction equipment, in particular to a coal seam hydraulic direction adjustable drilling device.
Background
Coal bed gas (coal mine gas) is unconventional natural gas which is associated with coal and is mainly stored in a coal bed in an adsorption state, is abundant in China, and has the functions of adjusting an energy structure, improving coal mine safety and protecting the ecological environment with great importance in development and utilization.
However, most coal seams in China have the characteristics of heterogeneity, low pressure, low permeability, low gas saturation and the like, the low permeability and the heterogeneity of the coal seams cause difficulty in effective gas extraction by using a conventional method, and the multi-branch bundle-shaped holes are effective ways for improving the gas extraction efficiency of the coal seams.
The traditional directional drilling machine beam hole forming technology is complex, equipment is expensive, the curvature radius of the beam hole is large, and frequent deflection guiding and deflecting are needed in the hole forming process, so that the utilization of the technology in the underground coal mine is limited.
Therefore, in order to solve the above technical problems, it is necessary to provide a new device.
Disclosure of Invention
In view of the above, the present invention provides a coal seam hydraulic direction adjustable drilling device, which can avoid deflecting and deflecting operations during drilling, and can automatically adjust the drilling inclination according to the actual construction condition, thereby greatly reducing the hole forming process of the beam-shaped hole, improving the hole forming efficiency of the beam-shaped hole, and the whole device has a simple structure and low manufacturing cost and use cost.
The invention comprises a nozzle, an intermediate joint, a water inlet joint and a rotary connecting assembly; the water outlet end of the intermediate joint is fixedly connected with the nozzle, the end face of the water inlet end of the intermediate joint sinks to form a spherical groove, the water outlet end of the water inlet joint is of a spherical structure and is embedded in the spherical groove, and the intermediate joint and the water inlet joint can rotate relatively;
the water inlet joint is coaxially provided with a main water inlet channel, the water inlet joint is provided with four direction adjusting channels, and the direction adjusting channels are uniformly arranged along the circumferential direction of the main water inlet channel;
the water inlet joint is characterized in that four limiting grooves are formed in the spherical surface of the water outlet end of the water inlet joint, the direction adjusting channel is communicated with the limiting grooves, four direction adjusting water outlet holes are formed in the side wall of the spherical surface groove of the middle joint, the direction adjusting water outlet holes correspond to the limiting grooves one to one, and the rotating connecting assembly is arranged in the limiting grooves and the direction adjusting water outlet holes.
Furthermore, the rotary connecting assembly comprises a spring and a rolling ball, one end of the spring is fixedly arranged on the direction adjusting water outlet hole, and the other end of the spring is abutted against the rolling ball and applies pretightening force to the rolling ball so that the rolling ball is partially embedded into the limiting groove; the rolling ball is provided with a through hole along the diameter direction.
Furthermore, the middle bottom of the limiting groove is provided with a locking groove.
Further, the nozzle is provided with a water spray hole, the water spray hole is respectively provided with a conical hole and a straight hole along the water flow direction, the small opening end of the conical hole is connected with the straight hole, the included angle between the conical hole wall and the axis of the conical hole is 20 degrees, and the length ratio of the conical hole to the straight hole is 2: 1.
Further, the water supply connector is provided with four self-entering jet channels with the same structure, the outer side of the water supply connector is communicated with the main water inlet channel through the self-entering jet channels, the self-entering jet channels are obliquely arranged from the water inlet direction to the water outlet direction, and an included angle between the axis of the self-entering jet channels and the axis of the main water inlet channel is larger than 45 degrees and smaller than 90 degrees.
The invention has the beneficial effects that: according to the invention, the spray head with the adjustable hydraulic driving direction rotates without a drill rod and an inclination guide device, so that the pore-forming inclination of the beam-shaped hole is adjusted, the radial beam-shaped hole construction with small curvature turning radius is realized, the inclination guide and deflection operation can be avoided in the drilling process, the drilling inclination can be automatically adjusted according to the actual construction condition, the pore-forming procedures of the beam-shaped hole are greatly reduced, the pore-forming efficiency of the beam-shaped hole is improved, the whole device has a simple structure, and the manufacturing cost and the use cost are low.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of another embodiment of the present invention.
FIG. 3 is a schematic structural diagram of the construction condition of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings, in which:
the invention comprises a nozzle 108, an intermediate joint 107, a water inlet joint 103 and a rotary connecting assembly; the water outlet end of the intermediate joint is fixedly connected with the nozzle, the end face of the water inlet end of the intermediate joint sinks to form a spherical groove, the water outlet end of the water inlet joint is of a spherical structure and is embedded in the spherical groove, and the intermediate joint and the water inlet joint can rotate relatively; wherein, the middle joint and the nozzle are fixedly connected by threads;
the water inlet joint 103 is coaxially provided with a main water inlet channel 100, the water inlet joint is provided with four direction adjusting channels 101, and the direction adjusting channels 103 are uniformly arranged along the circumferential direction of the main water inlet channel 100; of course, the intermediate joint is also provided with a water flow channel;
four limiting grooves 106 are arranged on the spherical surface of the water outlet end of the water inlet joint 103, the four limiting grooves are uniformly arranged along the circumferential direction of the cross section of the water inlet joint, the direction adjusting channel 101 is communicated with the limiting grooves 106, the side wall of the spherical surface groove of the intermediate joint is provided with four direction adjusting water outlet holes 111, the direction adjusting water outlet holes 111 are in one-to-one correspondence with the limiting grooves 106, and the rotating connecting component is arranged in the limiting grooves and the direction adjusting water outlet holes, wherein high-pressure water is input into the main water inlet channel and the direction adjusting channel, as shown in fig. 3, the high-pressure water is provided by a high-pressure pump 9, and in actual working conditions, in order to provide high-pressure water for the drilling device, equipment is further arranged, namely a main pipeline 2 for communicating the high-pressure pump with the main water inlet channel, a branch pipeline 3 for communicating the direction adjusting, The device comprises a support 7, a pipe coiling device 8 and the like, which belong to the prior art, wherein 4 is a drilling main hole, 5 is a beam-shaped hole, and through the structure, high-pressure water enters a main water inlet channel, passes through an intermediate joint and then is sprayed by a nozzle to realize drilling; after the rotation direction of the nozzle is adjusted, stopping supplying water to the direction adjusting channel, supplying water to the direction adjusting channel again when readjustment is needed, and supplying water to different direction adjusting channels in different directions; in the structure, the shower nozzle rotates with adjustable through water conservancy driving direction, need not the drilling rod and lead oblique device, thereby adjust the pore-forming inclination in beam form hole, realize the radial beam form hole construction that the radius was turned round in the little curvature, can avoid leading oblique and the operation of deflecting in the drilling process, can creep into the inclination according to actual construction situation automatically regulated, thereby the pore-forming process in beam form hole that has significantly reduced, improve the pore-forming efficiency in beam form hole, and whole device simple structure, low in manufacturing cost and use cost.
In this embodiment, the rotating connection assembly includes a spring 112 and a rolling ball 113, one end of the spring 112 is fixedly disposed in the direction adjustment water outlet, and the other end of the spring abuts against the rolling ball and applies a pre-tightening force to the rolling ball so that the rolling ball is partially embedded in the limiting groove; rolling ball 113 is provided with through-hole 115 along the diameter direction, in order to fix the spring, the apopore is adjusted to the direction and is the step hole structure, and the bore of the play water end in step hole is less than the bore of the end of intaking, and the diameter of the water inlet that the apopore was adjusted to the diameter of rolling ball and direction equals, and the rolling ball part imbeds in the end of intaking that the delivery port was adjusted to the direction, thereby guarantee the rolling regularity of rolling ball, and then guarantee the stability of whole structure, through above-mentioned structure, can realize the connection between water supply connector and the intermediate head on the one hand, on the other hand, can ensure that the intermediate head takes place to rotate for the water supply connector, the normal flow of rivers can be guaranteed.
In this embodiment, a locking groove 114 is arranged at the middle bottom of the limiting groove 106, in the structure of the limiting groove, the bottom of the limiting groove is in a convex arc surface structure, the size of the limiting groove is larger than the diameter of the rolling ball, and the convex arc surface is parallel to the spherical surface of the water inlet joint; in order to ensure that the water flow for direction adjustment only passes through the direction adjustment water outlet, a plurality of sealing rings 105 are arranged between the end surface of the water outlet end of the water inlet joint and the spherical groove, and the gap between the water inlet joint and the middle joint at the position of the limiting groove is sealed, so that the sensitivity of rotation direction adjustment and the sensitivity and accuracy of rotation curvature adjustment are ensured.
In the embodiment, the nozzle is provided with the water spraying hole, the water spraying hole is respectively provided with the tapered hole 109 and the straight hole 110 along the water flow direction, the small opening end of the tapered hole is connected with the straight hole, the included angle between the tapered hole wall and the axis of the tapered hole is 20 degrees, the length ratio of the tapered hole to the straight hole is 2:1, when hydraulic drilling is carried out, drilling can be achieved only by high water pressure, otherwise, water flow cannot break the coal bed, through the structure, when the water spraying hole of the high-pressure water flow channel nozzle is used, water flow is converged and accelerated by the tapered hole, so that the water pressure and the water flow speed are further improved, the whole device can be guaranteed to break the coal bed smoothly, and the drilling effect is better under the parameters of the tapered hole and the straight hole.
In this embodiment, the water inlet joint is provided with four self-jet flow pore canals 104 (the self-jet flow pore canals 104 are indicated by dotted lines due to the direction shown in the figure), the self-jet flow pore canals communicate the outer side of the water inlet joint with the main water inlet channel, the self-jet flow pore canals are obliquely arranged from the water inlet direction to the water outlet direction, an included angle between the axis of the self-jet flow pore canals and the axis of the main water inlet channel is more than 45 degrees and less than 90 degrees, and the optimal inclined angle is 60 degrees, although the coal seam is broken by water flow sprayed by a nozzle in the drilling process, the whole device is completed by the structure, because high-pressure water flow is sprayed by the self-jet flow pore canals, the high-pressure water flow moves towards the drilling direction together with the whole drilling device under the reaction force of the water flow, and the inclined angle of the self-jet flow pore canals is too, if the jet is too large, the jet can be in a reaming working state and cannot play a propelling role.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (4)
1. The utility model provides an adjustable drilling equipment of coal seam water conservancy orientation which characterized in that: comprises a nozzle, an intermediate joint, a water inlet joint and a rotary connecting assembly; the water outlet end of the intermediate joint is fixedly connected with the nozzle, the end face of the water inlet end of the intermediate joint sinks to form a spherical groove, the water outlet end of the water inlet joint is of a spherical structure and is embedded in the spherical groove, and the intermediate joint and the water inlet joint can rotate relatively;
the water inlet joint is coaxially provided with a main water inlet channel, the water inlet joint is provided with four direction adjusting channels, and the direction adjusting channels are uniformly arranged along the circumferential direction of the main water inlet channel;
the spherical surface of the water outlet end of the water inlet joint is provided with four limiting grooves, the direction adjusting channel is communicated with the limiting grooves, the side wall of the spherical surface groove of the middle joint is provided with four direction adjusting water outlet holes, the direction adjusting water outlet holes correspond to the limiting grooves one to one, and the rotating connecting assembly is arranged in the limiting grooves and the direction adjusting water outlet holes;
the rotary connecting assembly comprises a spring and a rolling ball, one end of the spring is fixedly arranged on the direction adjusting water outlet hole, and the other end of the spring is abutted against the rolling ball and applies pretightening force to the rolling ball so that the rolling ball is partially embedded into the limiting groove; the rolling ball is provided with a through hole along the diameter direction.
2. The coal seam hydraulic direction adjustable drilling device of claim 1, wherein: and a locking groove is formed in the middle bottom of the limiting groove.
3. The coal seam hydraulic direction adjustable drilling device of claim 1, wherein: the nozzle is provided with a water spraying hole, the water spraying hole is respectively provided with a conical hole and a straight hole along the water flow direction, the small opening end of the conical hole is connected with the straight hole, the included angle between the hole wall of the conical hole and the axis of the conical hole is 20 degrees, and the length ratio of the conical hole to the straight hole is 2: 1.
4. The coal seam hydraulic direction adjustable drilling device of claim 1, wherein: the water inlet joint is provided with four self-inlet jet flow pore passages with the same structure, the outer side of the water inlet joint is communicated with the main water inlet channel through the self-inlet jet flow pore passages, the self-inlet jet flow pore passages are obliquely arranged from the water inlet direction to the water outlet direction, and the included angle between the axis of the self-inlet jet flow pore passages and the axis of the main water inlet channel is larger than 45 degrees and smaller than 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810943024.9A CN109083594B (en) | 2018-08-17 | 2018-08-17 | Coal seam hydraulic direction adjustable drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810943024.9A CN109083594B (en) | 2018-08-17 | 2018-08-17 | Coal seam hydraulic direction adjustable drilling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109083594A CN109083594A (en) | 2018-12-25 |
| CN109083594B true CN109083594B (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810943024.9A Active CN109083594B (en) | 2018-08-17 | 2018-08-17 | Coal seam hydraulic direction adjustable drilling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110318677B (en) * | 2019-08-06 | 2023-12-19 | 吉林大学 | Dry-hot rock high-energy hydraulic down-the-hole hammer jet reaming device |
| JP7293497B2 (en) * | 2021-05-26 | 2023-06-19 | 中煤科工集団沈陽研究院有限公司 | Hydraulic inclined directional drilling rig and method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201225100Y (en) * | 2008-06-18 | 2009-04-22 | 何应春 | Screw drilling tool universal joint |
| US9145736B2 (en) * | 2010-07-21 | 2015-09-29 | Baker Hughes Incorporated | Tilted bit rotary steerable drilling system |
| CN203201467U (en) * | 2013-03-18 | 2013-09-18 | 王建生 | Steering tool for jet drilling radial well through hydraulic-controlled hollow spherical joint connection |
| CN203394348U (en) * | 2013-07-19 | 2014-01-15 | 中国石油天然气集团公司 | Adjustable pressure guniting short fitting for directional drilling crossing |
| CN104033106B (en) * | 2014-06-17 | 2016-02-24 | 中国石油大学(华东) | Radial sidetracking rotates self-advancing type multiple jet drill bit |
| CN105443038B (en) * | 2014-09-28 | 2017-10-10 | 中国石油化工集团公司 | Waterpower distance type vector nozzle |
| CN105507809B (en) * | 2016-02-01 | 2018-01-26 | 西南石油大学 | Cut rock crushing tool in a kind of alternation track |
| CN107288544B (en) * | 2016-04-01 | 2019-01-01 | 中国石油化工股份有限公司 | A kind of directional drilling device |
| CN107882543B (en) * | 2016-09-30 | 2020-10-09 | 中国石油天然气股份有限公司 | Horizontal well horizontal jet fracturing device |
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| CN109083594A (en) | 2018-12-25 |
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