CN214247322U - Orifice hydraulic device for preventing high-pressure push rod from spraying - Google Patents
Orifice hydraulic device for preventing high-pressure push rod from spraying Download PDFInfo
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- CN214247322U CN214247322U CN202022841531.7U CN202022841531U CN214247322U CN 214247322 U CN214247322 U CN 214247322U CN 202022841531 U CN202022841531 U CN 202022841531U CN 214247322 U CN214247322 U CN 214247322U
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Abstract
The utility model relates to the technical field of coal mine fracturing protection devices, in particular to an orifice hydraulic device for preventing high-pressure push rods from being sprayed, which is arranged between a coal bed and a coal wall, wherein the coal bed is provided with point type hydraulic fracturing drill holes, hole sealing capsules are arranged in the point type hydraulic fracturing drill holes, injector and high-pressure push rod, high-pressure push rod end connection high pressure rubber tube of intaking, the drill way hydraulic means who prevents high-pressure push rod injection includes bearing structure and hydraulic jack, bearing structure's first end seals at some formula hydraulic fracturing drilling drill way, the rubber tube of intaking passes bearing structure's first end and seals and extend some formula hydraulic fracturing drilling, hydraulic jack main part afterbody fixed connection is in bearing structure's second end, hydraulic jack and stroke pole front end pass through the ejection butt at the coal wall, this device ensures that hydraulic fracturing goes on safely, guarantee well point type staff's personal safety and economic benefits maximize.
Description
Technical Field
The patent of the utility model relates to a colliery fracturing protector technical field, especially a prevent drill way hydraulic means that high-pressure push rod sprays.
Background
The gas permeability of the coal seam directly determines the quality of a gas extraction effect, the common gas permeability of the coal seam in China is poor, the mining conditions tend to be more complex along with the gradual increase of the coal mining depth in China, the characteristics of coal bodies with high ground stress, high gas, high heterogeneity and low gas permeability are generated, so that the effective influence range of a single gas extraction drill hole is small, the pre-extraction drill hole is large in engineering quantity, the extraction efficiency is low, the conventional gas extraction method is difficult to play a role, point type hydraulic fracturing permeability improvement takes water as power, primary cracks, secondary cracks and artificial cavities in the coal bodies are communicated, expanded and extended through the supporting and splitting action of high-pressure water, a mutually-interwoven crack network with a certain length is formed, the connectivity inside the coal bodies is enhanced, and channels for gas diffusion and migration are increased, so that the gas permeability of the coal seam is increased, the gas extraction efficiency is improved. The point type fracturing installs the water injector between two sections of hole sealing capsules, and the hole sealing capsule inflation when high-pressure water pours into forms a high pressure and causes the schizogenesis district between two sections of hole sealing capsules, because the biggest pressure of high-pressure rivers can reach 40MPa, in case the hole sealing capsule became invalid, pressure in the drilling is unbalance in the twinkling of an eye, causes the hole sealing capsule to take high-pressure push rod to spout from the drilling, causes very big harm to equipment and personnel outside the mouth of a hole. In order to prevent the safety accident caused by the failure of the hole sealing capsule, a set of orifice hydraulic device for preventing the high-pressure push rod from spraying is specially designed, so that the point type hydraulic fracturing is ensured to be safely carried out, and the personal safety and the economic benefit maximization of underground workers are ensured.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a prevent drill way hydraulic means that high-pressure push rod sprays, this device ensures that point type hydraulic fracturing goes on safely, guarantees staff's personal safety and economic benefits maximize in the pit.
In order to achieve the above object, the utility model adopts the following technical scheme:
in a first technical scheme, the orifice hydraulic device for preventing the high-pressure push rod from being ejected is arranged between a coal seam and a coal wall, wherein the coal seam is provided with a point type hydraulic fracturing drill hole, a hole sealing capsule, a water injector and a high-pressure push rod are installed in the point type hydraulic fracturing drill hole, the tail part of the high-pressure push rod is connected with a high-pressure water inlet rubber pipe, the orifice hydraulic device for preventing the high-pressure push rod from being ejected comprises a supporting structure and a hydraulic jack, a first end of the supporting structure is sealed at the orifice of the point type hydraulic fracturing drill hole, the high-pressure water inlet rubber pipe penetrates through a first end seal of the supporting structure and extends out of the point type hydraulic fracturing drill hole, the tail part of a main body of the hydraulic jack is fixedly connected to a second end of the supporting structure, and the hydraulic jack and the front end of a stroke rod are abutted to the coal wall through the push rod.
In the first technical scheme, preferably, the support structure comprises a main steel pipe and flanges connected to two ends of the main steel pipe, and the tail of the hydraulic jack is connected with the second end of the main steel pipe through the flanges.
In the first technical scheme, preferably, a bracket for supporting the main steel pipe to be aligned with the height of the point hydraulic fracturing drill hole is arranged below the main steel pipe.
In the first technical means, preferably, the coal seam surface and the coal wall surface are parallel to each other, and the main body of the support structure and the hydraulic jack extends in a direction perpendicular to the coal seam surface and the coal wall surface.
In the first aspect, preferably, the front section of the trip lever has a plate-like support structure.
In the first technical scheme, preferably, a pressure release valve and a pressure gauge are arranged on the high-pressure water inlet rubber pipe; the hydraulic jack comprises a water inlet pipe, a water return pipe, a water injection pipe, a drain pipe and a control handle for switching the working state of the hydraulic jack.
Use the utility model discloses a beneficial effect is:
this prevent drill way hydraulic means that high pressure push rod sprays adopts hydraulic pressure drill way protector to have processing simply, and the operation of being convenient for, usable jack adjust stroke pole, is applicable to different intervals, and the device is stable firm fixes point type hydraulic fracturing whole equipment inside drilling completely, even downthehole high pressure unbalance that takes place, also can not produce harm to the outside personnel and the equipment of drilling. After point type hydraulic fracturing is finished, residual pressure water flow in the hole is released through the pressure release valve, and the whole fracturing process is ensured to be safely carried out.
Drawings
Fig. 1 is a schematic structural diagram of the orifice hydraulic device for preventing the high-pressure push rod from spraying according to the present invention.
The reference numerals include:
1-a hydraulic jack; 2-a travel bar; 3-water inlet pipe; 4-a water return pipe; 5-control the handle; 6-water injection pipe; 7-a drain pipe; 8, main body steel pipe; 9-high pressure water inlet rubber pipe; 10-a pressure relief valve; 11-a scaffold; 12-a flange plate; 13-high pressure push rod; 14-hole sealing capsules; 15-a water injector; drilling a 16-point hydraulic fracture; 17-pressure gauge; a-the native coal seam; b-coal wall.
Detailed Description
In order to make the purpose, technical solution and advantages of the present technical solution more clear, the present technical solution is further described in detail below with reference to specific embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present teachings.
Example 1
As shown in fig. 1, the orifice hydraulic device for preventing the high-pressure push rod 13 from being ejected according to the embodiment is disposed between a coal seam a and a coal wall B, wherein the coal seam a is provided with a point-type hydraulic fracturing borehole 16, a hole sealing capsule 14, a water injector 15 and the high-pressure push rod 13 are installed in the point-type hydraulic fracturing borehole 16, a high-pressure water inlet hose 9 is connected to a tail portion of the high-pressure push rod 13, the orifice hydraulic device for preventing the high-pressure push rod 13 from being ejected includes a support structure and a hydraulic jack 1, a first end of the support structure is sealed at an orifice of the point-type hydraulic fracturing borehole 16, the high-pressure water inlet hose 9 penetrates through a first end seal of the support structure and extends out of the point-type hydraulic fracturing borehole 16, a tail portion of a main body of the hydraulic jack 1 is fixedly connected to a second end of the support structure, and front ends of the hydraulic jack 1 and a stroke rod 2 are abutted to the coal wall B through the push jack.
Preferably, the supporting structure comprises a main steel pipe 8 and flanges 12 connected to two ends of the main steel pipe 8, and the tail of the hydraulic jack 1 is connected to the second end of the main steel pipe 8 through the flanges 12.
In order to adapt to the height of the point hydraulic fracturing borehole 16, a bracket 11 for supporting the main steel pipe 8 in height alignment with the point hydraulic fracturing borehole 16 is arranged below the main steel pipe 8.
The surface of the coal seam A and the surface of the coal wall B are parallel to each other, and the extending directions of the supporting structure and the main body of the hydraulic jack 1 are vertical to the surface of the coal seam A and the surface of the coal wall B. The front section of the stroke rod 2 is provided with a plate-shaped supporting structure, so that the front end of the stroke rod 2 is prevented from slipping, and meanwhile, the pressure received by the coal wall B is reduced, and the support is more stable.
In order to facilitate the switching control of the working state of the device, a pressure release valve 10 and a pressure gauge 17 are arranged on the high-pressure water inlet rubber pipe 9; the hydraulic jack 1 comprises a water inlet pipe 3, a water return pipe 4, a water injection pipe 6, a water discharge pipe 7 and a control handle 5 for switching the working state of the hydraulic jack 1.
Example 2
In this embodiment, the method for using the orifice hydraulic device for preventing the high-pressure push rod 13 from jetting is provided, and with the orifice hydraulic device for preventing the high-pressure push rod 13 from jetting provided in embodiment 1, after the point-type hydraulic fracturing borehole 16 of the coal seam a is constructed first, the hole sealing capsule 14 and the water injector 15 are sent into the point-type hydraulic fracturing borehole 16 by the high-pressure push rod 13; then, a main steel pipe 8 and a jack are erected by a support 11, a flange plate 12 is aligned to a point type hydraulic fracturing drill hole 16, a high-pressure rubber pipe is connected with a high-pressure push rod 13, a control handle 5 is connected with a hydraulic jack 1 by a water inlet pipe 3 and a water return pipe 4, and a water injection pipe 6 and a water discharge pipe 7 are installed on the control handle 5; and (3) finishing assembling the orifice hydraulic device for preventing the high-pressure push rod 13 from jetting, operating the control handle 5 to adjust the stroke rod 2 of the hydraulic jack 1, enabling the orifice hydraulic device for preventing the high-pressure push rod 13 from jetting to be supported between the coal wall B and the coal seam A, and sealing the point type hydraulic fracturing drill hole 16.
Specifically, as shown in fig. 1, a point type hydraulic fracturing permeability-increasing point is selected as a point type hydraulic fracturing permeability-increasing point, and after a point type hydraulic fracturing borehole 16 is constructed, a hole sealing capsule 14, a water injector 15 and a high-pressure push rod 13 are connected and then sent to a predetermined fracturing position in the borehole.
The main steel pipe 8 and the jack are erected by a support 11, the flange 12 is aligned to a point type hydraulic fracturing drill hole 16, a high-pressure water inlet rubber pipe 9 is connected with a high-pressure push rod 13, the control handle 5 is connected with the hydraulic jack 1 through a water inlet pipe 3 and a water return pipe 4, and a water inlet pipe 6 and a water outlet pipe 7 are installed on the control handle 5. At this time, the assembly of the orifice protection device is completed, and the control handle 5 is operated to adjust the stroke rod 2 of the hydraulic jack 1, so that the whole device is completely fixed between the coal wall B and the coal seam A.
Starting point type fracturing, enabling high-pressure water flow to pass through a high-pressure hydraulic rubber pipe water injection drill hole, waiting for more than 10 minutes after fracturing is successful, ensuring that the reading of a pressure gauge 17 is basically stabilized below 1MPa, then opening a pressure relief valve 10, releasing all residual pressure in the hole, then dismantling an orifice protection device, pulling out a high-pressure push rod 13, and performing next-stage point type fracturing.
It should be noted that the hydraulic circuit of the device needs to ensure a tight connection without leakage points. Before assembling the orifice protecting device, the control handle 5 is adjusted to ensure that the water inlet and the water return of the hydraulic jack 1 are smooth, and the travel rod 2 runs normally. When the pressure release valve 10 is opened, no personnel near the water outlet is ensured, and the personnel is prevented from being sprayed by residual pressure water flow.
The foregoing is only a preferred embodiment of the present invention, and many variations can be made in the specific embodiments and applications of the present invention by those skilled in the art without departing from the spirit of the present invention.
Claims (6)
1. The utility model provides a prevent drill way hydraulic means that high pressure push rod sprayed, sets up between this coal seam and coal wall, and wherein point type hydraulic fracturing drilling is seted up in this coal seam, installs hole sealing capsule, water injector and high pressure push rod in the point type hydraulic fracturing drilling, and high pressure push rod end connection high pressure rubber tube of intaking, its characterized in that: the orifice hydraulic device for preventing the high-pressure push rod from jetting comprises a supporting structure and a hydraulic jack, wherein the first end of the supporting structure is sealed at an orifice of a point type hydraulic fracturing drill hole, a high-pressure water inlet rubber pipe penetrates through the first end seal of the supporting structure and extends out of the point type hydraulic fracturing drill hole, the tail part of a main body of the hydraulic jack is fixedly connected to the second end of the supporting structure, and the hydraulic jack and the front end of a stroke rod are abutted against a coal wall through a pushing head.
2. The port hydraulic apparatus for preventing high-pressure pushrod injection of claim 1, wherein: the supporting structure comprises a main steel pipe and flange plates connected to two ends of the main steel pipe, and the tail of the hydraulic jack is connected with the second end of the main steel pipe through the flange plates.
3. The port hydraulic apparatus for preventing high-pressure pushrod injection of claim 2, wherein: and a support for supporting the main steel pipe to be aligned with the point type hydraulic fracturing drill hole in height is arranged below the main steel pipe.
4. The port hydraulic apparatus for preventing high-pressure pushrod injection of claim 1, wherein: the coal bed surface and the coal wall surface are parallel to each other, and the extending directions of the main bodies of the supporting structure and the hydraulic jack are perpendicular to the coal bed surface and the coal wall surface.
5. The port hydraulic apparatus for preventing high-pressure pushrod injection of claim 1, wherein: the front section of the travel bar has a plate-like support structure.
6. The orifice hydraulic apparatus for preventing high-pressure pushrod injection of any one of claims 1 to 5, wherein: a pressure release valve and a pressure gauge are arranged on the high-pressure water inlet rubber pipe; the hydraulic jack comprises a water inlet pipe, a water return pipe, a water injection pipe, a drain pipe and a control handle for switching the working state of the hydraulic jack.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022841531.7U CN214247322U (en) | 2020-12-01 | 2020-12-01 | Orifice hydraulic device for preventing high-pressure push rod from spraying |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022841531.7U CN214247322U (en) | 2020-12-01 | 2020-12-01 | Orifice hydraulic device for preventing high-pressure push rod from spraying |
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| CN214247322U true CN214247322U (en) | 2021-09-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392483A (en) * | 2020-12-01 | 2021-02-23 | 煤科集团沈阳研究院有限公司 | Orifice hydraulic device for preventing high-pressure push rod from jetting and using method |
| CN113818878A (en) * | 2021-10-28 | 2021-12-21 | 烟台杰瑞石油装备技术有限公司 | Hydraulic fracturing rock breaking method and system |
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2020
- 2020-12-01 CN CN202022841531.7U patent/CN214247322U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392483A (en) * | 2020-12-01 | 2021-02-23 | 煤科集团沈阳研究院有限公司 | Orifice hydraulic device for preventing high-pressure push rod from jetting and using method |
| CN112392483B (en) * | 2020-12-01 | 2024-05-03 | 中煤科工集团沈阳研究院有限公司 | Orifice hydraulic device for preventing high-pressure push rod from being sprayed and use method |
| CN113818878A (en) * | 2021-10-28 | 2021-12-21 | 烟台杰瑞石油装备技术有限公司 | Hydraulic fracturing rock breaking method and system |
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