CN217735438U - Blowout prevention complete device for directional drilling of underground coal mine drilling machine - Google Patents
Blowout prevention complete device for directional drilling of underground coal mine drilling machine Download PDFInfo
- Publication number
- CN217735438U CN217735438U CN202222085017.4U CN202222085017U CN217735438U CN 217735438 U CN217735438 U CN 217735438U CN 202222085017 U CN202222085017 U CN 202222085017U CN 217735438 U CN217735438 U CN 217735438U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- blowout prevention
- main body
- drilling
- communicated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a blowout prevention complete device for directional drilling of a coal mine underground drilling machine, which comprises a blowout prevention main body and a negative pressure box body; the left and right coaxial disassembling of the blowout prevention main body is provided with a drilling pipeline and a third pipeline which are communicated with the inside of the blowout prevention main body, the upper end of the blowout prevention main body is provided with a first pipeline which is communicated with the inside of the blowout prevention main body in a disassembling mode, and the lower end of the blowout prevention main body is provided with a second pipeline which is communicated with the inside of the blowout prevention main body in a disassembling mode; the second pipeline is communicated with the negative pressure box body, the upper end of the negative pressure box body is provided with a fourth pipeline which is communicated with the first pipeline and then communicated with the extraction pipeline, and the lower end of the negative pressure box body is provided with a drain pipe; and one end of the fourth pipeline, which is close to the extraction pipeline, is provided with a valve, and the blowout prevention main body is internally provided with an adjusting component for buffering high-pressure gas or slag water. The complete device for preventing blowout of the directional drilling of the underground coal mine drilling machine is simple and compact in structure, not only effectively discharges high-pressure gas from an extraction pipeline, but also avoids the gas from being rapidly sprayed out and leaked during drilling and avoids overlarge gas impact pressure, and is safer and more reliable.
Description
Technical Field
The utility model relates to a coal mining technical field, concretely relates to colliery is complete sets are prevented spouting in directional drilling of rig in pit.
Background
The directional drilling is a drilling construction technology capable of carrying out accurate directional drilling, the drilling track is measured in real time mainly through a measurement while drilling system, the drilling track is corrected by using a hole bottom motor, the cutting of the drilling is mainly realized by driving the hole bottom motor to drive a drill bit to rotate by high-pressure water, a pinnate branch hole, a top plate comb-shaped branch hole and a bottom plate comb-shaped branch hole can be constructed, the directional drilling has the characteristics of capability of advanced treatment, large pre-pumping area, high extraction efficiency and the like, and is widely applied to the drilling construction of outburst prevention measures in underground areas.
The directional drilling technology has the advantages that the hole spraying phenomenon often occurs in the drilling process of a mine with high gas and threatened by water flood, particularly, the probability of the hole spraying at a geological structure is higher, a large amount of gas sprayed rapidly in the hole spraying process is easy to generate gas spraying holes if measures are not taken in advance, the gas in a roadway is over-limited, the body health of workers working at the leeward side can be damaged, the occurrence of coal and gas outburst accidents can be induced seriously, and huge hidden dangers are brought to the safety production of coal mines;
some blowout preventers mainly adopt great barrel structure in order to ensure to arrange sediment smoothly to be equipped with the mouth of pipe that gas, sediment drainage confession drilling usefulness are arranged to row on barrel structure, it though can realize the different passageways of gas, sediment water, nevertheless because the geological environment of drilling is uncertain, for example when meetting high pressure gas, water, the mouth of pipe department that sediment drainage was arranged will be followed to blowout gas fast and discharge, perhaps too big to the inside impact of barrel, influences its overall sealing nature, still can cause tunnel gas to transfinite.
Disclosure of Invention
An object of the utility model is to provide a colliery is complete sets prevented spouting in directional drilling of rig in pit, simple structure is compact, not only effectively discharges high-pressure gas from taking out the drainage pipeline, and quick spun gas is revealed when avoiding drilling and too big to this device is inside strikeed, safe and reliable more.
In order to achieve the purpose, the complete device for preventing blowout of the directional drilling of the underground coal mine drilling machine comprises a blowout preventing main body;
the left and right coaxial disassembling of the blowout prevention main body is provided with a drilling pipeline and a third pipeline which are communicated with the inside of the blowout prevention main body, the upper end of the blowout prevention main body is provided with a first pipeline which is communicated with the inside of the blowout prevention main body in a disassembling mode, and the lower end of the blowout prevention main body is provided with a second pipeline which is communicated with the inside of the blowout prevention main body in a disassembling mode;
the device also comprises a negative pressure box body;
the second pipeline is communicated with the negative pressure box body, the upper end of the negative pressure box body is provided with a fourth pipeline which is communicated with the first pipeline and then communicated with the extraction pipeline, and the lower end of the negative pressure box body is provided with a drain pipe;
a valve is arranged at one end of the fourth pipeline close to the extraction pipeline, and an adjusting component for buffering high-pressure gas or slag water is arranged in the blowout prevention main body.
Furthermore, an elastic sealing ring or a rubber part with a conical structure is fixedly arranged in the third pipeline.
Furthermore, a first pressure regulating valve is arranged at one end, close to the extraction pipeline, of the fourth pipeline, and a second pressure regulating valve is arranged at one end, close to the negative pressure box body, of the fourth pipeline.
Further, the adjusting assembly comprises a filter plate provided with vent holes;
the filter plate divides the blowout prevention main body into a left part and a right part, and the pipe orifice of the first pipeline and the pipe orifice of the second pipeline are correspondingly positioned on the right part and the left part of the blowout prevention main body.
Further, the adjustment assembly comprises a support sleeve coaxial with the drill rod and rotatably arranged in the blowout prevention main body;
the outer side of the supporting sleeve is provided with a helical blade.
Further, the adjustment assembly comprises a support sleeve coaxial with the drill rod and rotatably arranged in the blowout prevention main body;
the supporting sleeve is provided with a baffle plate which is obliquely arranged, and the baffle plate correspondingly separates the pipe orifices of the first pipeline and the second pipeline.
Furthermore, the lower end of the blowout prevention main body is of a conical structure, and the second pipeline is located at the conical bottom.
Furthermore, a filtering partition plate located below the pipe orifice of the second pipeline is arranged in the negative pressure box body, and filtering cotton is arranged on the filtering partition plate.
Compared with the prior art, the complete device for preventing blowout of the directional drilling of the underground coal mine drilling machine has the advantages that the second pipeline is communicated with the negative pressure box body, the fourth pipeline communicated with the extraction pipeline after being communicated with the first pipeline is arranged at the upper end of the negative pressure box body, so that when a drill rod is used for drilling, high-pressure gas intensively enters the blowout prevention main body, most of the gas enters the extraction pipeline from the first pipeline, and a small part of the gas enters the negative pressure box body and the extraction pipeline from the second pipeline, so that the direct discharge of the gas caused by the direct connection of the second pipeline and a drain pipe in the traditional structure is avoided, the structure is simple and compact, the gas which is rapidly sprayed during drilling is effectively prevented from leaking, and the complete device is safer and more reliable;
because the adjusting assembly is arranged in the blowout prevention main body, high-pressure gas and slag water are rapidly sprayed out for buffering through the adjusting assembly during drilling, damage to a drill rod and the blowout prevention main body due to overlarge impact is avoided, the integral sealing performance is guaranteed, and mutual separation of the gas and the slag water can be realized;
when the adjusting component is a supporting sleeve which is provided with a spiral blade structure and rotates, the impact of high-pressure gas and slag water acts on the spiral blade, so that the supporting sleeve rotates to drive the gas and the slag water to be uniformly discharged from the first pipeline and the second pipeline, the damage of the corresponding pipeline caused by rapid impact is avoided, and the uniform output of the gas and the slag water is ensured;
when the adjusting component is a supporting sleeve which is provided with an inclined baffle and rotates, the high-pressure gas drives the supporting sleeve to rotate, so that the baffle deviates to the first pipeline, and the gas with larger impact is preferentially discharged from the first pipeline; the high-pressure slag water drives the supporting sleeve to rotate, so that the baffle is deviated from the second pipeline, the slag water with larger impact is preferentially discharged from the second pipeline, and the gas and the slag water can be preferentially adjusted and are separated and discharged.
Drawings
Figure 1 is a schematic view of a first embodiment of the overall, and adjustment assembly of the present invention;
FIG. 2 is a schematic view of a second embodiment of the adjusting assembly of the present invention;
FIG. 3 is a schematic view of a third embodiment of the regulating assembly of the present invention during high pressure gas venting;
FIG. 4 is a schematic view of a third embodiment of a regulating assembly of the present invention when discharging high pressure slag water;
in the figure: 1. the blowout prevention body 11, a first pipeline 12, a second pipeline 13, a drilling pipeline 14 and a third pipeline;
2. the device comprises a negative pressure box body 21, a drain pipe 22, a fourth pipeline 23, a filtering partition plate 31, a filtering plate 32, a helical blade 33, a sealing ring 34, a baffle 35 and a supporting sleeve;
41. the system comprises a valve 42, a first pressure regulating valve 43, a second pressure regulating valve 5, an extraction pipeline 6 and a drill rod.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 and 2, the complete device for preventing blowout of directional drilling of the underground coal mine drilling machine comprises a blowout preventing body 1 and a negative pressure box body 2;
a drilling pipeline 13 and a third pipeline 14 which are communicated with the interior of the blowout prevention main body 1 are coaxially disassembled from left to right, a first pipeline 11 communicated with the upper end of the blowout prevention main body is disassembled, and a second pipeline 12 communicated with the lower end of the blowout prevention main body is disassembled;
the second pipeline 12 is communicated with the negative pressure box body 2, a fourth pipeline 22 which is communicated with the first pipeline 11 and then communicated with the extraction pipeline 5 is arranged at the upper end of the negative pressure box body 2, and a drain pipe 21 is arranged at the lower end of the negative pressure box body 2;
a valve 41 is arranged at one end of the fourth pipeline 22 close to the extraction pipeline 5, and an adjusting component for buffering high-pressure gas or slag water is arranged in the blowout prevention main body 1;
specifically, the blowout prevention main body 1 is a four-way structure, is a main blowout prevention supporting structure, and can be a cylinder body or a box body structure as a whole; the first pipeline 11, the second pipeline 12, the drilling pipeline 13 and the third pipeline 14 can be connected to the blowout prevention body 1 through clamps or thread sealing, and communication between the first pipeline and the interior of the blowout prevention body 1 is guaranteed;
the drilling pipeline 13 can be a flange structure or a pipe body structure, and aims to protect the drill rod 6 and mount and position the blowout prevention main body 1, and the blowout prevention main body 1 is connected to a hoisting structure and is convenient to move or lift to a proper construction position;
determining the position of coal seam drilling construction, when the drilling pipeline 13 is of a pipe body structure, firstly drilling a drilling hole with a certain depth into a coal body, fixing the drilling pipeline 13 in the drilling hole, when the drilling pipeline 13 is of a flange structure, directly fixing the drilling pipeline 13 on the drilling position, penetrating the drill rod 6 from the third pipeline 14 to the drilling pipeline 13, and drilling the construction position;
preferably, an elastic sealing ring 33 or a rubber part with a conical structure can be fixedly arranged in the third pipeline 14, the sealing ring 33 or the rubber part ensures that the drill rod 6 passes through the third pipeline 14 to be rotationally sealed, and high-pressure gas or slag water is effectively prevented from being sprayed out of the drilling pipeline 13 and the third pipeline 14;
when the blowout prevention main body 1 is installed, the blowout prevention main body needs to be kept flat and straight and can be hung on a roadway roof through a steel wire rope, a first pipeline 11 on the blowout prevention main body 1 is used for discharging gas, a second pipeline 12 is used for discharging slag water, the first pipeline 11 and the negative pressure box body 2 are respectively connected with an extraction pipeline 5 generating negative pressure, and smooth gas discharge is guaranteed;
when the drill rod 6 drills, high-pressure gas intensively enters the blowout prevention main body 1, most of the gas enters the extraction pipeline 5 from the first pipeline 11 at the upper end, and a small part of the gas enters the negative pressure box body 2 from the second pipeline 12 and then enters the extraction pipeline 5 from the negative pressure box body 2, so that the situation that the gas is directly discharged due to the fact that the second pipeline 12 is directly connected with the drain pipe 21 in a traditional structure is avoided; the slag water of the drilling enters the blowout prevention body 1, flows into the negative pressure tank body 2 from the second pipeline 12, and is finally discharged from the drain pipe 21;
preferentially, one end of the fourth pipeline 22 close to the extraction pipeline 5 is provided with a first pressure regulating valve 42, and one end close to the negative pressure box body 2 is provided with a second pressure regulating valve 43; a valve 41 and a first pressure regulating valve 42 are arranged at one end of the fourth pipeline 22 close to the extraction pipeline 5, a second pressure regulating valve 43 is arranged at one end close to the negative pressure box body 2, the first pressure regulating valve 42 is used for regulating total pressure, namely, the air pressure between the first pipeline 11 and the extraction pipeline 5 is regulated, the second pressure regulating valve 43 is used for regulating the air pressure communicated with the extraction pipeline 5 and the negative pressure box body 2 (the second pipeline 12), and the pressure difference between the first pipeline 11 and the extraction pipeline 5 is larger than the pressure difference between the negative pressure box body 2 and the extraction pipeline 5, so that gas is prevented from entering the negative pressure box body 2 in a centralized manner;
the valve 41 on the side of the fourth pipeline 22 close to the extraction pipeline 5 is a main switch, and the valves 41 for controlling the opening and closing correspondingly, that is, branch switches, can be arranged at one ends of the first pipeline 11, the second pipeline 12 and the fourth pipeline 22 close to the negative pressure box body 2.
The inner part of the blowout prevention main body 1 is provided with an adjusting component, and the aim is to buffer high-pressure gas and slag water during drilling, avoid damage to the drill rod 6 and the blowout prevention main body 1 caused by overlarge impact, ensure the whole sealing property and realize the mutual separation of the gas and the slag water;
as a first embodiment, the adjusting assembly comprises a filter plate 31 provided with ventilation holes;
the filter plate 31 divides the blowout prevention main body 1 into a left part and a right part, and the pipe orifice of the first pipeline 11 and the pipe orifice of the second pipeline 12 are correspondingly positioned on the right part and the left part of the blowout prevention main body 1;
specifically, high-pressure gas is buffered by the filter plate 31 during drilling, enters the right part of the blowout prevention main body 1 through the vent holes in the filter plate 31, and is discharged from the first pipeline 11;
high-pressure slag water is buffered through the filter plate 31 and is discharged from the second pipeline 12 to the negative pressure box body 2 at the left part of the blowout prevention main body 1;
as a second embodiment, as shown in fig. 2, the adjustment assembly comprises a support sleeve 35 coaxial with the drill pipe 6 and rotatably disposed within the blowout preventer body 1;
the outer side of the supporting sleeve 35 is provided with a helical blade 32;
specifically, one end of the third pipe 14 extends into the blowout preventer body 1, and one end of the support sleeve 35 is mounted in the third pipe 14 through a bearing, and the helical blade 32 on the support sleeve is close to the drill pipe 13;
when high-pressure gas and slag water are generated during drilling, high-pressure impact acts on the helical blades 32 to enable the supporting sleeve 35 to rotate, the helical blades 32 uniformly discharge the gas and the slag water from the first pipeline 11 and the second pipeline 12, damage to corresponding pipelines due to rapid impact is avoided, the helical blades 32 can discharge drilled slag, and the drilled slag is prevented from staying in the blowout prevention main body 1;
as a third embodiment, as shown in fig. 3 and 4, the adjustment assembly comprises a support sleeve 35 coaxial with the drill pipe 6 and rotatably disposed within the blowout preventer body 1;
the supporting sleeve 35 is provided with a baffle 34 which is obliquely arranged, and the baffle 34 correspondingly separates the orifices of the first pipeline 11 and the second pipeline 12;
specifically, the support sleeve 35 may be mounted as in the second embodiment;
when the impact of gas is large, as shown in fig. 3, the high-pressure gas drives the baffle 34 and the support sleeve 35 to rotate, so that the upper part of the baffle 34 is deviated to the first pipeline 11, and the gas with large impact is preferentially discharged from the first pipeline 11; when the impact of the slag water is large, as shown in fig. 4, the high-pressure slag water drives the baffle 34 and the support sleeve 35 to rotate, so that the lower part of the baffle 34 is biased to the second pipeline 12, and the slag water with large impact is preferentially discharged from the second pipeline 12;
in addition, in order to avoid the accumulation of drilling slag in the blowout prevention body 1, preferably, the lower end of the blowout prevention body 1 is of a conical structure, and the second pipeline 12 is positioned at the conical bottom;
further, a filtering partition plate 23 positioned below the pipe orifice of the second pipeline 12 is arranged in the negative pressure box body 2, and filtering cotton is arranged on the filtering partition plate 23;
specifically, the slag water of the drill hole is discharged into the negative pressure box body 2 from the second pipeline 12, and the slag stones with different particle sizes are filtered through the filter cotton and the filter partition plate 23, so that the separation of the slag stones and the water is realized; the separated water is discharged from a water discharge pipe 21, and the separated slag can be subjected to subsequent treatment or a discharge port is arranged on the negative pressure box body 2.
When the complete device for directional drilling and blowout prevention of the underground coal mine drilling machine is used, the position of coal bed drilling construction is determined, the first pipeline 11, the second pipeline 12, the drilling pipeline 13 and the third pipeline 14 are correspondingly installed on the blowout prevention main body 1, and the blowout prevention main body 1 is fixedly located at the construction position;
in an initial state, a valve 41 close to the extraction pipeline 5 for a main switch on the fourth pipeline 22 is closed, when the drill rod 6 passes through the third pipeline 14 and the drilling pipeline 13 for directional drilling, the valve 41 is opened, and negative pressure is generated in the extraction pipeline 5;
high-pressure gas and slag water generated by positioning drilling are buffered and adjusted through an adjusting assembly in the blowout prevention box body, at the moment, most of the gas enters the extraction pipeline 5 from the first pipeline 11 at the upper end, and a small part of the gas enters the negative pressure box body 2 from the second pipeline 12, can be stored in the negative pressure box body 2 or enters the extraction pipeline 5 from the negative pressure box body 2, so that the situation that the gas is directly discharged due to the fact that the second pipeline 12 is directly connected with the water discharge pipe 21 in a traditional structure is avoided; the high-pressure slag water generated after drilling enters the blowout preventer body 1, flows into the negative pressure tank 2 from the second pipe 12, and is finally discharged from the drain pipe 21, and can be stored or filtered in the negative pressure tank 2, and is finally discharged from the drain pipe 21.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
Claims (8)
1. The coal mine underground drilling machine directional drilling blowout prevention complete equipment comprises a blowout prevention main body (1);
the left and right of the blowout prevention main body (1) are coaxially and detachably provided with a drilling pipeline (13) and a third pipeline (14) which are communicated with the interior of the blowout prevention main body, the upper end of the blowout prevention main body is detachably provided with a first pipeline (11) which is communicated with the interior of the blowout prevention main body, and the lower end of the blowout prevention main body is detachably provided with a second pipeline (12) which is communicated with the interior of the blowout prevention main body;
it is characterized by also comprising a negative pressure box body (2);
the second pipeline (12) is communicated with the negative pressure box body (2), a fourth pipeline (22) which is communicated with the first pipeline (11) and then communicated with the extraction pipeline (5) is arranged at the upper end of the negative pressure box body (2), and a drain pipe (21) is arranged at the lower end of the negative pressure box body;
one end of the fourth pipeline (22) close to the extraction pipeline (5) is provided with a valve (41), and an adjusting component for buffering high-pressure gas or slag water is arranged in the blowout prevention main body (1).
2. The directional drilling blowout prevention complete device for the coal mine underground drilling machine according to claim 1, wherein an elastic sealing ring (33) or a rubber piece with a conical structure is fixedly arranged in the third pipeline (14).
3. The complete set of device for preventing blowout of directional drilling of the underground coal mine drilling machine according to claim 2, wherein a first pressure regulating valve (42) is arranged at one end of the fourth pipeline (22) close to the extraction pipeline (5), and a second pressure regulating valve (43) is arranged at one end close to the negative pressure box body (2).
4. The coal mine down-hole drill directional drilling blowout prevention complete set according to any one of claims 1 to 3, characterized in that the adjusting assembly comprises a filter plate (31) provided with vent holes;
the filter plate (31) divides the blowout prevention main body (1) into a left part and a right part, and the pipe orifice of the first pipeline (11) and the pipe orifice of the second pipeline (12) are correspondingly positioned on the right part and the left part of the blowout prevention main body (1).
5. The coal mine down-hole drill directional drilling blowout prevention kit according to any one of claims 1 to 3, characterized in that the adjustment assembly comprises a support sleeve (35) coaxial with the drill rod (6) and rotatably arranged in the blowout prevention body (1);
the outer side of the supporting sleeve (35) is provided with a helical blade (32).
6. The coal mine down-hole drill directional drilling blowout prevention kit according to any one of claims 1 to 3, characterized in that the adjustment assembly comprises a support sleeve (35) coaxial with the drill pipe (6) and rotatably arranged within the blowout prevention body (1);
the supporting sleeve (35) is provided with a baffle (34) which is obliquely arranged, and the baffle (34) correspondingly separates the orifices of the first pipeline (11) and the second pipeline (12).
7. The complete set of device for preventing blowout of directional drilling of the underground coal mine drilling machine according to claim 6 is characterized in that the lower end of the blowout preventing body (1) is of a conical structure, and the second pipeline (12) is located at the bottom of the conical structure.
8. The complete set of device for directional drilling and blowout prevention of the underground coal mine drilling machine according to any one of claims 1 to 3, wherein a filtering partition plate (23) is arranged in the negative pressure box body (2) and located below the pipe orifice of the second pipeline (12), and filter cotton is arranged on the filtering partition plate (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222085017.4U CN217735438U (en) | 2022-08-09 | 2022-08-09 | Blowout prevention complete device for directional drilling of underground coal mine drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222085017.4U CN217735438U (en) | 2022-08-09 | 2022-08-09 | Blowout prevention complete device for directional drilling of underground coal mine drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217735438U true CN217735438U (en) | 2022-11-04 |
Family
ID=83814067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222085017.4U Active CN217735438U (en) | 2022-08-09 | 2022-08-09 | Blowout prevention complete device for directional drilling of underground coal mine drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217735438U (en) |
-
2022
- 2022-08-09 CN CN202222085017.4U patent/CN217735438U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109736737B (en) | Method for snubbing tripping of reservoir gas drilling well | |
| CN102337921A (en) | Gas-water separation, water discharging and slag discharge integrated device for drill hole in gas extraction crossheading drill site | |
| CN105401878A (en) | Drilling machine for large-diameter down hole hammer | |
| CN217735438U (en) | Blowout prevention complete device for directional drilling of underground coal mine drilling machine | |
| CN107503680B (en) | Ground large-diameter rapid drilling equipment and method thereof | |
| CN102128047B (en) | Gas-slag separation and recovering system for drilling construction | |
| WO2024088229A1 (en) | Non-rotating down-the-hole hammer drilling machine and use method thereof | |
| CN105298443B (en) | Oil pipe blowout, gaslift and pressure break connection make method under oil pipe float valve and insufficient balance well completion | |
| KR20130032179A (en) | Water powered hammer | |
| CN210033407U (en) | Gas and water synchronous recovery and separation device for high gas mine drilling | |
| CN202250165U (en) | Integration device for separating gas and water and discharging water and slag for drill hole in gas extraction crossheading drill site | |
| CN107575164A (en) | High-pressure hydraulic radial drilling guiding device and method under drilling condition | |
| CN110685735A (en) | Gas pumping and exhausting directional drilling tool and drilling method | |
| CN218200076U (en) | Quick breaking device for blocking screw machine | |
| US3750769A (en) | Drill pipe positioner for earth boring machine | |
| CN214330582U (en) | Comprehensive blowout preventing device for directional drilling construction in underground coal mine | |
| CN210888869U (en) | Water logging closed water-gas separation system | |
| CN212337212U (en) | Device for coal mine tunnel pressurized drilling | |
| CN107747482B (en) | Underground hole dredging device | |
| CN206737865U (en) | Down-the-hole drill is unpowered wet dust separater | |
| CN209724270U (en) | A kind of intraductal atmospheric pressure opening bit | |
| CN205805460U (en) | A kind of driving drill carriage slag cleaning device at the bottom of hole | |
| CN217681553U (en) | Full-rotation casing follow-up driving drill rod device | |
| CN220267653U (en) | Downhole drilling anti-spraying hole device | |
| CN110454214A (en) | A kind of tapping equipment for gas drainage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |