CN206513343U - Grouting device and pressure break hole sealing device - Google Patents
Grouting device and pressure break hole sealing device Download PDFInfo
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- CN206513343U CN206513343U CN201621338609.0U CN201621338609U CN206513343U CN 206513343 U CN206513343 U CN 206513343U CN 201621338609 U CN201621338609 U CN 201621338609U CN 206513343 U CN206513343 U CN 206513343U
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- plugging
- grouting
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Abstract
The utility model provides a kind of grouting device and pressure break hole sealing device.The grouting device that the utility model is provided, including：Grouting Pipe, first plugging device, second plugging device and switching device, the first grout outlet is provided with Grouting Pipe, second grout outlet and the 3rd grout outlet, first plugging device is arranged at the first grout outlet, second plugging device is arranged at the second grout outlet, Grouting Pipe respectively with the first plugging device and the second plugging device unilaterally connected, switching device is arranged at the 3rd grout outlet, switching device, for when injection slurry enters the first plugging device and the second plugging device, the first sealing of hole layer is formed at the aperture of fracturing borehole, and after predetermined position formation the second sealing of hole layer of fracturing borehole, open the 3rd grout outlet, so that injection slurry enters fracturing borehole.Grouting device and pressure break hole sealing device that the utility model is provided, to the plugging effect of fracturing borehole preferably, can avoid occur during coal bed fracturing aperture metal run out, leak the problem of.
Description
Technical field
The utility model is related to safety of coal mines technology, more particularly to a kind of grouting device and pressure break hole sealing device.
Background technology
Coal and gas prominent is to threaten one of major casualty of Safety of Coal Mine Production.At present, mash gas extraction, drop are relied primarily on
The method of low coal seam gas-bearing capacity prevents and treats coal and gas prominent.For hypotonicity coal seam, the extraction efficiency of gas it is low, it is necessary to
Increase the gas permeability in coal seam by the method in hydraulic fracturing coal seam, and then improve the extraction efficiency of gas, with effectively preventing
Coal and gas prominent.
When using hydraulic fracturing coal seam method pressure break coal seam, liquid is injected to coal seam by pressure break pipe, to inject liquid
Into coal seam, and avoid liquid from being flowed out from operating side, sealing pores need to be carried out to fracturing borehole using hole sealing device.At present, often
Sealing pores are carried out by way of carrying the plugging bag equipped with sealing materials such as polyester ammonia in the end of Grouting Pipe, to logical
Cross the predetermined position formation sealing of hole layer of the dilatancies of the sealing materials such as polyester ammonia in drilling, so by drilling orifice and
Region between sealing of hole layer injects the mode of injection slurry to complete sealing pores.
When using the above method to carry out sealing pores, because the sealing materials such as polyester ammonia have ageing, generally exist
Rapid dilatancy after 10 minutes.So, during it will carry the Grouting Pipe feeding drilling of plugging bag, the sealing of hole such as polyester ammonia
Material can be formed sealing of hole layer, drilling blocked when Grouting Pipe does not also reach precalculated position with regard to dilatancy.Therefore,
When carrying out sealing pores to fracturing borehole using the method for prior art, it is impossible to ensure that sealing of hole layer is located at precalculated position, cause envelope
Hole depth is shallower, so that when injecting fracturing fluid to coal seam by pressure break pipe, pressure break Guan Huicong sealing of holes layer oozes out, occur metalling run out,
The phenomenon of leak, or even also there is a situation where that fracturing fluid breaks through sealing of hole layer to go out fracturing borehole.Therefore, the sealing of hole of prior art
Fracturing effect is bad.
Utility model content
The utility model provides a kind of grouting device and a kind of pressure break hole sealing device, is filled with solving existing pressure break sealing of hole
Put when carrying out sealing pores, it is impossible to ensure that sealing of hole layer is located at precalculated position, cause hole sealing depth shallower, so as to pass through pressure break
During pipe injects fracturing fluid to coal seam, exist metal run out, leak, even pressure break pipe and grouting device integrally go out pressure break
The problem of drilling.
The utility model first aspect provides a kind of grouting device, including：Grouting Pipe, the first plugging device, the second closure
The first grout outlet, the second grout outlet and the 3rd grout outlet are provided with device and switching device, the Grouting Pipe, described first goes out
Starch mouth to be located at the aperture of fracturing borehole, second grout outlet is located at the predetermined position of the fracturing borehole, the described 3rd
Grout outlet is located between first grout outlet and second grout outlet；
First plugging device is arranged at first grout outlet, and second plugging device is arranged on described second
At grout outlet, the Grouting Pipe respectively with first plugging device and the second plugging device unilaterally connected, the switch
Device is arranged at the 3rd grout outlet；
The switching device, for entering first plugging device and second plugging device in injection slurry, in institute
State and the first sealing of hole layer and predetermined position formation the second sealing of hole layer in the fracturing borehole are formed at the aperture of fracturing borehole
Afterwards, the 3rd grout outlet is opened, so that injection slurry enters the fracturing borehole.
Further, first grout outlet connects first plugging device by the first check valve, so that the note
Slurries are unidirectionally flow in first plugging device.
Further, second grout outlet connects second plugging device by the second check valve, so that the note
Slurries are unidirectionally flow in second plugging device.
Further, the switching device is pressure explosive valve.
Further, first plugging device and second plugging device are plugging bag.
The grouting device that the utility model is provided, by setting Grouting Pipe, the first plugging device, the second plugging device and opening
Close and the first grout outlet, the second grout outlet and the 3rd grout outlet are provided with device, and Grouting Pipe, the first grout outlet is bored positioned at pressure break
At the aperture in hole, the second grout outlet is located at the predetermined position of fracturing borehole, and the 3rd grout outlet is located at the first grout outlet and second
Between grout outlet, the first plugging device is arranged at the first grout outlet, and the second plugging device is arranged at the second grout outlet, slip casting
Pipe respectively with the first plugging device and the second plugging device unilaterally connected, switching device is arranged at the 3rd grout outlet, and switch
Device, for when injection slurry enters the first plugging device and the second plugging device, forming first at the aperture of fracturing borehole
Sealing of hole layer and fracturing borehole predetermined position formation the second sealing of hole layer after, open the 3rd grout outlet so that injection slurry enters
Enter fracturing borehole.So, the plugging effect of sealing of hole can be improved, the hole sealing depth of sealing of hole is improved, and then in the process of coal bed fracturing
In, it can prevent aperture from metalling run out, the phenomenon of leak, to improve fracturing effect.
The utility model second aspect provides a kind of pressure break hole sealing device, including：Pressure break pipe, slurry recovering tube and the utility model
Any grouting device that first aspect is provided；Wherein,
The switching device of the grouting device, for entering first plugging device and second closure when injection slurry
During device, the first sealing of hole layer and the predetermined position formation the in fracturing borehole are formed at the aperture of the fracturing borehole
After two sealing of holes layer, the grout outlet of the switching device control is opened, so that injection slurry enters the fracturing borehole, the pressure is blocked
Split the space between space and the slurry recovering tube and the fracturing borehole between pipe and the fracturing borehole.
The pressure break hole sealing device that the utility model is provided, by being set to grouting device to include Grouting Pipe, the first closure
The first grout outlet, the second grout outlet and the 3rd pulp are provided with device, the second plugging device and switching device, and Grouting Pipe
Mouthful, the first grout outlet is located at the aperture of fracturing borehole, and the second grout outlet is located at the predetermined position of fracturing borehole, the 3rd pulp
Mouth is located between the first grout outlet and the second grout outlet, and the first plugging device is arranged at the first grout outlet, the second plugging device
Be arranged at the second grout outlet, Grouting Pipe respectively with the first plugging device and the second plugging device unilaterally connected, switching device sets
Put at the 3rd grout outlet, and switching device, for when injection slurry enters the first plugging device and the second plugging device, in pressure
Split and the first sealing of hole layer is formed at the aperture of drilling and after predetermined position formation the second sealing of hole layer of fracturing borehole, open
The grout outlet of switching device control, so that injection slurry enters fracturing borehole, is blocked between the pressure break pipe and the fracturing borehole
Space and the slurry recovering tube and the fracturing borehole between space.So, the plugging effect of sealing of hole can be improved, envelope is improved
The hole sealing depth in hole, so during coal bed fracturing, can prevent aperture from metalling run out, the phenomenon of leak, to improve pressure break
Effect.
Further, the pressure break pipe includes：Flexible pipe, rigid pipe, screen casing and conveying device, one end of the rigid pipe with
The flexible pipe connection, the other end of the rigid pipe is connected with the screen casing；Second plugging device of the grouting device and institute
State rigid pipe connection；
The conveying device is fixedly connected with the rigid pipe, when the conveying device is promoted in fracturing borehole,
The conveying device drives the pressure break pipe and the grouting device to be moved to the end of the fracturing borehole, so that the screen casing
The end of the fracturing borehole is moved to, and, the Grouting Pipe is moved to the predetermined position.
Further, first plugging device is also connected with the conveying device.
Further, the female silk cap of tool is provided with the outer wall of the rigid pipe, the conveying device has outer
Screw thread, the external screw thread and internal thread matching, the conveying device are fixedly connected by the silk cap with the rigid pipe；
Pipe clamp, the axis coincidence of the axis of the pipe clamp and the silk cap, institute are additionally provided with the outer wall of the rigid pipe
Stating pipe clamp is used for the outer wall of conveying device described in clamping.
Further, the conveying device is also connected with the flexible pipe.
The pressure break hole sealing device that the utility model is provided, by by pressure break pipe be set to include flexible pipe, rigid pipe, screen casing and
Conveying device, and one end of rigid pipe is connected with flexible pipe, the other end of rigid pipe is connected with screen casing, the second closure of grouting device
Device is connected with rigid pipe, and conveying device is fixedly connected with rigid pipe.So, because pressure break pipe includes flexible pipe, and a flexible pipe
Length it is longer, so, the joint quantity of whole pressure break pipe being reduced, to avoid causing the mistake in water delivery because of pressure break pipe joint more
Drainage occurs in journey.In addition, the pressure break hole sealing device that the utility model is provided, when conveying device is pushed away in fracturing borehole
When dynamic, conveying device can drive pressure break pipe and grouting device to be moved to the end of fracturing borehole, so that screen casing is moved to pressure break brill
The end in hole, and, Grouting Pipe is moved to predetermined position, just can be by this way it is not necessary to increase extra auxiliary equipment
Pressure break pipe and grouting device are delivered in fracturing borehole, it is possible to decrease the cost of whole pressure break hole sealing device.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are
Some embodiments of the present utility model, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the grouting device that the utility model embodiment one is provided；
Fig. 2 is the structural representation for the grouting device that the utility model embodiment two is provided；
Fig. 3 is the structural representation for the pressure break hole sealing device that the utility model embodiment three is provided；
The structural representation for the pressure break hole sealing device that Fig. 4 provides for the utility model example IV；
Fig. 5 provides the structural representation of the pressure break pipe in pressure break hole sealing device for the utility model example IV；
What the second plugging device that Fig. 6 provides in pressure break hole sealing device for the utility model example IV coordinated with rigid pipe
Structural representation；
The first plugging device that Fig. 7 is provided for the utility model example IV in pressure break hole sealing device is matched somebody with somebody with conveying device
The structural representation of conjunction；
The structural representation of pressure break pipe in the pressure break hole sealing device that Fig. 8 provides for the utility model embodiment five；
The structural representation of silk cap in the pressure break hole sealing device that Fig. 9 provides for the utility model embodiment five；
The structural representation of conveying device in the pressure break hole sealing device that Figure 10 provides for the utility model embodiment five；
The structure that pipe clamp in the pressure break hole sealing device that Figure 11 provides for the utility model embodiment five coordinates with rigid pipe
Schematic diagram；
The structural representation of pressure break pipe in the pressure break hole sealing device that Figure 12 provides for the utility model embodiment six.
Description of reference numerals：
100：First plugged zone；
200：Second plugged zone；
1：Grouting Pipe；
11：First grout outlet；
12：Second grout outlet；
13：3rd grout outlet；
2：First plugging device；
21：Second cylindrical hole；
22：Second connecting rope；
3：Second plugging device；
31：First cylindrical hole；
32：First connecting rope；
4：Switching device；
51：First check valve；
52：Second check valve；
500：Grouting device；
6：Pressure break pipe；
61：Screen casing；
62：Flexible pipe；
63：Rigid pipe；
631：First connecting portion；
64：Conveying device；
641：Second connecting portion；
642：External screw thread；
65：Silk cap；
651：The axis of silk cap；
66：Pipe clamp；
661：The axis of pipe clamp；
67：Rubber hose coupling；
68：Screw thread；
7：Slurry recovering tube；
9：Fracturing borehole：
91：The aperture of fracturing borehole；
92：The predetermined position of fracturing borehole；
10：Tie string.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
The utility model provides a kind of grouting device and a kind of pressure break hole sealing device, to solve existing pressure break hole sealing device
When carrying out sealing pores, it is impossible to ensure that sealing of hole layer is located at precalculated position, cause hole sealing depth shallower, so as to pass through pressure break pipe
To coal seam injection fracturing fluid during, exist metal run out, leak, even pressure break pipe and grouting device integrally go out pressure break brill
The problem of hole.
Grouting device and pressure break hole sealing device that the utility model is provided, can be applied to coal bed fracturing field.For example, can answer
The grouting device provided with the utility model carries out sealing pores to fracturing borehole, and then is injected using pressure break pipe into coal seam
Fracturing fluid, to pass through fracturing fluid pressure break coal seam.
Fig. 1 is the structural representation for the grouting device that the utility model embodiment one is provided.It refer to Fig. 1, the present embodiment
The grouting device of offer, including：In Grouting Pipe 1, the first plugging device 2, the second plugging device 3 and switching device 4, Grouting Pipe 1
The first grout outlet 11, the second grout outlet 12 and the 3rd grout outlet 13 are provided with, the first grout outlet 11 is located at the aperture of fracturing borehole 9
At 91, the second grout outlet 12 is located at the predeterminated position 92 of fracturing borehole 9, and the 3rd grout outlet 13 is located at the first grout outlet 11 and the
Between two grout outlets 12；
First plugging device 2 is arranged at the first grout outlet 11, and the second plugging device 3 is arranged at the second grout outlet 12,
Grouting Pipe 1 respectively with the first plugging device 2 and the unilaterally connected of the second plugging device 3, switching device 4 is arranged on the 3rd grout outlet 13
Place；
Switching device 4, for when injection slurry enters the first plugging device 2 and the second plugging device 3, in fracturing borehole 9
Aperture 91 at form the first sealing of hole layer 100 and formed at the predeterminated position 92 of fracturing borehole 9 after second sealing of hole layer 200,
The 3rd grout outlet 13 is opened, so that injection slurry enters fracturing borehole 9.
Specifically, Grouting Pipe 1 can be hard tube, or flexible pipe, for example, Grouting Pipe 1 can be steel pipe, polyvinyl chloride
Pipe, sebific duct etc..In addition, the first grout outlet 11, the second grout outlet 12 and the 3rd grout outlet 13 are provided with Grouting Pipe 1, specifically,
First grout outlet 1 is arranged on the top of Grouting Pipe 1, and the second grout outlet 12 is arranged on the end of Grouting Pipe 1, and the 3rd grout outlet 13 is set
Put in the middle part of Grouting Pipe 1.Also, inject injection slurry to fracturing borehole 9 in the grouting device provided using the present embodiment
When, Grouting Pipe 1 need to be delivered in fracturing borehole 9, now, need to ensure that the first grout outlet 11 is located at the aperture 91 of fracturing borehole 9
Place, the second grout outlet 12 is located at the predeterminated position 92 of fracturing borehole 9.It should be noted that predeterminated position 92 is according to reality
Production it needs to be determined that, for example, it may be at seat earth, can also at roof, can also be at coal seam, in a word,
When carrying out sealing pores to fracturing borehole using grouting device, it is ensured that the second grout outlet is located at screen casing close to fracturing borehole hole
The end of mouth.
Alternatively, the first plugging device 2 and the second plugging device 3 can be plugging bag, for example, can be canvas bag etc..
It should be noted that Grouting Pipe 1 passes through the first grout outlet 11 and the unilaterally connected of the first plugging device 2.Similarly, Grouting Pipe 1 is led to
Cross the second grout outlet 12 and the unilaterally connected of the second plugging device 3.So, when inputting injection slurry to Grouting Pipe 1, injection slurry can pass through
First grout outlet 11 flows into the first plugging device 2, to form the first plugged zone 100 at the aperture 91 of fracturing borehole 9；Equally
Ground, injection slurry can also be flowed into the second plugging device 3 by the second grout outlet 12, with the predeterminated position 92 of fracturing borehole 9
Form the second plugged zone 200.
It should be noted that in the present embodiment, specific fit system not to the first plugging device 2 and Grouting Pipe 1 and
Second plugging device 3 and the specific fit system of Grouting Pipe 1 are defined, as long as can realize that Grouting Pipe 1 passes through the first pulp
Mouth 11 is unilaterally connected by the second grout outlet 12 and the second plugging device 3 with the unilaterally connected of the first plugging device 2, Grouting Pipe 1
Fit system, belongs to the protection domain of the present embodiment.
Specifically, in the present embodiment, switching device 4 can be automatic valve, and the actuation time of the automatic valve is predetermined threshold value,
For example, above-mentioned predetermined threshold value can be 20 minutes.So, after 20 points of 1 slip casting of Grouting Pipe, above-mentioned automatic valve is opened.So, exist
During continuing slip casting using Grouting Pipe 1, in first 20 minutes of slip casting, injection slurry enters the first plugging device 2 and second
Plugging device 3, forms the first sealing of hole layer 100 and the predeterminated position 92 in fracturing borehole 9 at the aperture 91 of fracturing borehole 9
Place forms the second sealing of hole layer 200, when the slip casting time reaching 20 minutes, and above-mentioned automatic valve is opened, now, in Grouting Pipe 1
Injection slurry pass through the 3rd grout outlet 13 and enter in the fracturing borehole 9 between the first plugged zone 100 and the second plugged zone 200.
It should be noted that switching device 4 can also have for other in device of similar functions, the present embodiment, it is not right
The specific constructive form of switching device 4 is defined.
It following is a brief introduction of the concrete principle that the grouting device that the present embodiment is provided can solve the problem that technical problem.Specifically
Ground, before the grouting device provided using the present embodiment carries out slip casting, is first delivered to specifying for fracturing borehole 9 by grouting device
Position, makes the second grout outlet 12 of Grouting Pipe 1 be located at the predeterminated position 92 of fracturing borehole 9, and be located at the first grout outlet 11
At the aperture 91 of fracturing borehole 9, after grouting device is delivered into specified location, injection slurry is injected into Grouting Pipe 1, now,
Injection slurry enters the first plugging device 2 by the first grout outlet 11, the first sealing of hole layer is formed at the aperture 91 of fracturing borehole 9
100, and the second plugging device 3 is entered by the second grout outlet 12, second is formed at the predeterminated position 92 of fracturing borehole 9 and is blocked
Layer 200, after the first plugged zone 100 and the second plugged zone 200 are formed, switching device 4 opens the 3rd grout outlet 13, Grouting Pipe 1
The fracturing borehole 9 that interior injection slurry enters between the first plugged zone 100 and the second plugged zone 200.So, it is ensured that the first closure
Layer 100 is formed at the aperture 91 of fracturing borehole 9, and the second plugged zone 200 is formed at the predeterminated position 92 of fracturing borehole 9, is entered
And sealing of hole is extended to predetermined position from fracturing borehole aperture, hole sealing depth is deeper, so, can improve the closure of sealing of hole
Effect, and then improve fracturing effect.
The grouting device that the present embodiment is provided, by setting Grouting Pipe, the first plugging device, the second plugging device and opening
Close and the first grout outlet, the second grout outlet and the 3rd grout outlet are provided with device, and Grouting Pipe, the first grout outlet is bored positioned at pressure break
At the aperture in hole, the second grout outlet is located at the predetermined position of fracturing borehole, and the 3rd grout outlet is located at the first grout outlet and second
Between grout outlet, the first plugging device is arranged at the first grout outlet, and the second plugging device is arranged at the second grout outlet, slip casting
Pipe respectively with the first plugging device and the second plugging device unilaterally connected, switching device is arranged at the 3rd grout outlet, and switch
Device, for when injection slurry enters the first plugging device and the second plugging device, forming first at the aperture of fracturing borehole
Sealing of hole layer and fracturing borehole predetermined position formation the second sealing of hole layer after, open the 3rd grout outlet so that injection slurry enters
Enter fracturing borehole.So, the plugging effect of sealing of hole can be improved, the hole sealing depth of sealing of hole is improved, and then in the process of coal bed fracturing
In, it can prevent aperture from metalling run out, the phenomenon of leak, to improve fracturing effect.
A specific embodiment is given below, the grouting device for describing the utility model offer in detail.
Fig. 2 is the structural representation for the grouting device that the utility model embodiment two is provided.On the basis of above-described embodiment
On, as shown in Fig. 2 the grouting device that the present embodiment is provided, the first grout outlet 11 is blocked by the first check valve 51 connection first
Device 2, so that the injection slurry is unidirectionally flow in the first plugging device 2.
Specifically, Fig. 2 is refer to, the first check valve 51 is arranged on the first grout outlet, and the first check valve 51 is located at the
In one plugging device 2, Grouting Pipe 1 passes through the first check valve 51 and the unilaterally connected of the first plugging device 2.
Further, Fig. 2 is continued referring to, the grouting device that the present embodiment is provided, the second grout outlet 12 is single by second
The second plugging device 3 is connected to valve 52, so that the injection slurry is unidirectionally flow in the second plugging device 3.
Specifically, Fig. 2 is refer to, the second check valve 52 is arranged on the second grout outlet 12, and the second check valve 52 is located at
In second plugging device 3, Grouting Pipe 1 passes through the second check valve 52 and the unilaterally connected of the second plugging device 3.
Further, in the present embodiment, switching device 4 is pressure explosive valve.
Specifically, the burst pressure of above-mentioned pressure explosive valve is 1.6MPa.So, when injecting injection slurry to Grouting Pipe 1,
Injection slurry is separately flowed into the first plugging device 2 and the second plugging device by the first grout outlet 11 and the second grout outlet 12 first
3, and the first plugged zone 100 is formed at the aperture 91 of fracturing borehole 9, second is formed at the predeterminated position 92 of fracturing borehole 9
Plugged zone 200, so, after the first plugged zone 100 and the second plugged zone 200 are formed, the first plugging device 2 and the second closure
The injection slurry being full of in device 3 in injection slurry, Grouting Pipe 1 can not be further continued for being flowed into the first plugging device 2 and the second closure dress
Put in 3, the pressure rise of the liquid in Grouting Pipe 1, when the pressure of liquid reaches the burst pressure of pressure explosive valve, pressure burst
Broken valve is opened, and the injection slurry in Grouting Pipe 1 flows into fracturing borehole 9 by the 3rd grout outlet 13.
The grouting device that the present embodiment is provided, the first grout outlet connects the first plugging device by the first check valve, so that
Injection slurry is unidirectionally flow in the first plugging device, and the second grout outlet connects the second plugging device by the second check valve, so that note
Slurries are unidirectionally flow in the second plugging device, and switching device is pressure explosive valve.So, it is ensured that forming the first plugged zone
After the second plugged zone, switching device opens the 3rd grout outlet, can improve the plugging effect of sealing of hole, and the sealing of hole for improving sealing of hole is deep
Degree, so during coal bed fracturing, can prevent aperture from metalling run out, the phenomenon of leak, to improve fracturing effect.
The utility model second aspect provides a kind of pressure break hole sealing device.Fig. 3 is what the utility model embodiment three was provided
The structural representation of pressure break hole sealing device.It refer to Fig. 3, the pressure break hole sealing device that the utility model is provided, including：Pressure break pipe 6,
Slurry recovering tube 7 and the grouting device 500 as described in embodiment one or embodiment two；
The switching device 4 of grouting device 500, for entering the first plugging device 2 and the second plugging device 3 when injection slurry
When, the first sealing of hole layer 100 is formed at the aperture 91 of fracturing borehole 9 and the is formed at the predeterminated position 92 of fracturing borehole 9
After two sealing of holes layer 200, open the grout outlet that switching device 4 is controlled so that injection slurry enters fracturing borehole 9, closure pressure break pipe 6 with
The space between space and slurry recovering tube 7 and fracturing borehole 9 between fracturing borehole 9.
Specifically, pressure break pipe 6 can use pressure break pipe of the prior art, for example, it may be being made up of steel pipe and screen casing
Pressure break pipe, can also be the pressure break pipe being made up of polyvinyl chloride pipe and screen casing.In addition, slurry recovering tube 7 can for steel pipe, iron pipe,
Sebific duct etc..In addition, Fig. 3 is refer to, and when the hole sealing device provided using the present embodiment carries out sealing pores to fracturing borehole, pressure
The screen casing 61 for splitting pipe 6 is located at the end of fracturing borehole 9.It should be noted that the pressure break hole sealing device that the present embodiment is provided, slip casting
The concrete structure and operation principle of device 500 may refer to the description of embodiment one or embodiment two, and here is omitted.
The pressure break hole sealing device provided using the present embodiment is provided sealing pores are carried out to fracturing borehole
When specific method.Specifically, when the pressure break hole sealing device provided using the present embodiment carries out sealing pores to fracturing borehole,
Specific method for sealing may comprise steps of：
Step 1: pressure break pipe 6, grouting device 500 and slurry recovering tube 7 are placed to the precalculated position in fracturing borehole 9 respectively,
Wherein, place after terminating, the screen casing 61 of pressure break pipe 6 is located at the end of fracturing borehole 9, the second grout outlet 12 of grouting device 500
(end of the screen casing 61 close to aperture 91 is particularly located at the predeterminated position 92 of fracturing borehole 9)；
Step 2: continuing to inject injection slurry to Grouting Pipe 1, so that injection slurry is flowed into the first plugging device 2 from Grouting Pipe 1
With the second plugging device 3, the first sealing of hole layer 100 is formed at the aperture 91 of fracturing borehole 9 and in the default of fracturing borehole 9
The second sealing of hole layer 200 is formed at position 92；
Step 3: continuing to inject injection slurry to Grouting Pipe 1, so that the switching device 4 of grouting device 500, enters in injection slurry
Enter the first plugging device 2 and the second plugging device 3, the first sealing of hole layer 100, Yi Ji are formed at the aperture 91 of fracturing borehole 9
Formed at the predeterminated position 92 of fracturing borehole 9 after second sealing of hole layer 200, open the grout outlet that switching device 4 is controlled, and then make note
Slurries enter fracturing borehole 9；
Step 4: when slurry recovering tube 7 returns slurry, blocking slurry recovering tube 7, and continue to inject injection slurry to Grouting Pipe 1；
Step 5: when the pressure of Grouting Pipe 1 reaches predetermined threshold value, stopping slip casting, sealing of hole and terminating.
One description in conjunction with the embodiments, the pressure break hole sealing device that the present embodiment is provided, by the way that grouting device is set into bag
Include Grouting Pipe, the first plugging device, be provided with the first grout outlet, second on the second plugging device and switching device, and Grouting Pipe
Grout outlet and the 3rd grout outlet, the first grout outlet are located at the aperture of fracturing borehole, and the second grout outlet is located at the pre- of fracturing borehole
If at position, the 3rd grout outlet is located between the first grout outlet and the second grout outlet, and the first plugging device is arranged on the first pulp
Mouthful at, the second plugging device is arranged at the second grout outlet, Grouting Pipe respectively with the first plugging device and the second plugging device list
To connection, switching device is arranged at the 3rd grout outlet, and switching device, for entering the first plugging device and the when injection slurry
During two plugging devices, the first sealing of hole layer is formed at the aperture of fracturing borehole and is formed in the predetermined position of fracturing borehole
After second sealing of hole layer, open the grout outlet of switching device control so that injection slurry enters fracturing borehole, block the pressure break pipe with
The space between space and the slurry recovering tube and the fracturing borehole between the fracturing borehole.So, sealing of hole can be improved
Plugging effect, improve sealing of hole hole sealing depth, and then during coal bed fracturing, can prevent aperture from metalling run out, leak
Phenomenon, to improve fracturing effect.
The structural representation for the pressure break hole sealing device that Fig. 4 provides for the utility model example IV；Fig. 5 is the utility model
Example IV provides the structural representation of the pressure break pipe in pressure break hole sealing device.Fig. 4 and Fig. 5 are refer to, what the present embodiment was provided
Fracturing borehole device, pressure break pipe 6 includes：Flexible pipe 62, rigid pipe 63, screen casing 61 and conveying device 64, one end of rigid pipe 63 with
Flexible pipe 62 is connected, and the other end of rigid pipe 63 is connected with screen casing 61；The second plugging device 3 and rigid pipe 63 of grouting device 500
Connection；
Conveying device 64 is fixedly connected with rigid pipe 63, when conveying device 63 is promoted in fracturing borehole 9, conveying dress
Put 64 drive pressure break pipes 6 and grouting device 500 to move to the end of fracturing borehole 9, so that screen casing 61 is moved to fracturing borehole 9
End, and, Grouting Pipe 1 is moved at predeterminated position 92.
It should be noted that in the present embodiment, the water-supply-pipe of flexible pipe 62, rigid pipe 63 and the composition pressure break of screen casing 61 pipe 6, its
In, the length of a flexible pipe 62 is longer, usually 30 meters, so so that the joint negligible amounts of whole pressure break pipe 6.
In addition, rigid pipe 63 can be metal tube, or non-metallic pipe, as long as ensureing that rigid pipe 63 has enough
Intensity and resistance to pressure.It should be noted that conveying device 64 is rod-like structure, and the conveying device 64 is made by power
Used time does not deform, for example, conveying device 64 can be iron, metal tube, non-metallic pipe etc..
It should be noted that the mode that rigid pipe 63 and flexible pipe 62 can be connected through a screw thread is connected, can also be by connecing
Head or screwed connection.Similarly, the mode that rigid pipe 63 and screen casing 61 can be connected through a screw thread is connected, can also be by connecing
Head or screwed connection.In addition, rigid pipe 63 can also be connected with flexible pipe 62, screen casing 61 by other means, specific connection
Mode is not repeated one by one herein.
Further, Fig. 5 is refer to, conveying device 64 is fixedly connected with rigid pipe 63.Specifically, when rigid pipe 63 is gold
Category pipe, and conveying device 64 is when being the conveying device being made of metal material, not only can will conveying dress by way of welding
64 are put to be fixedly connected with rigid pipe 63, can also be by being arranged the annular buckle (annular on the outer wall of conveying device 64
Buckle is fixed on the outer wall of conveying device 64), an annular buckle is arranged on the outer wall of rigid pipe 63, and (the annular buckle is consolidated
On the outer wall for being scheduled on rigid pipe 63), and then the two annular buckles are fixedly connected, will be conveyed by the two annular buckles
Device 64 is fixedly connected with rigid pipe 63.Similarly, when conveying device 64 and rigid pipe 63 are non-metallic pipe, can by
An annular buckle (the annular buckle is fixed on the outer wall of conveying device 64) is arranged on the outer wall of conveying device 64, in rigidity
It is arranged an annular buckle (the annular buckle is fixed on the outer wall of rigid pipe 63) on the outer wall of pipe 63, and then by the two rings
Shape buckle is fixedly connected, to be fixedly connected with conveying device 64 with rigid pipe 63 by the two annular buckles.Need explanation
It is, can also be by the above method by conveying device 64 when conveying device 64 is metal tube, and rigid pipe 63 is non-metallic pipe
It is fixedly connected with rigid pipe 63.It should be noted that in the present embodiment, not to conveying device 64 and the connected mode of rigid pipe 63
It is defined.
Further, in the present embodiment, the second plugging device 3 of grouting device 500 is fixedly connected with rigid pipe 63.Example
Such as, the second plugging device 3 can be banded on the outer wall of rigid pipe 63 by connecting rope (can be iron wire), to realize the second envelope
Block apparatus 3 is fixedly connected with rigid pipe 63.Fig. 6 shows that the structure that a kind of second plugging device 3 coordinates with rigid pipe 63 is shown
It is intended to, as shown in fig. 6, in this kind of implementation, the second plugging device 3 can be the plugging bag with the first cylindrical hole 31
(for example, can be the structure of similar water wing), and the first connecting rope 32, rigid pipe are provided with the side of the first cylindrical hole 31
First connecting portion 631 is provided with 63 outer wall, so, rigid pipe 63 can be located in the first cylindrical hole 31, and by first
Connecting rope 32 is bundled in first connecting portion 631, to realize being fixedly connected for the second plugging device 3 and rigid pipe 63.Need
It is bright, when second plugging device 3 is fixed on rigid pipe 63 by the first connecting rope 32, the side of the first cylindrical hole 31
Outer wall with rigid pipe 63 is brought into close contact.
Furthermore, it is necessary to which explanation, Fig. 6 illustrate only the connected mode of a kind of second plugging device 3 and rigid pipe 63, also
The second plugging device 3 can be fixedly connected on rigid pipe 63 by other means, on specific method herein not one by one
Repeat.
It should be noted that carrying out sealing pores to fracturing borehole in the pressure break hole sealing device provided using the present embodiment
When, by way of promoting conveying device 64 conveying device 64 can be made to be moved in fracturing borehole 9 to the end of fracturing borehole,
Because conveying device 64 is fixedly connected with rigid pipe 63, and rigid pipe 63 is connected with the second plugging device 3 of grouting device 500,
Therefore, when conveying device 64 is moved in fracturing borehole 9, pressure break pipe 6 and grouting device 500 can be driven to move, by screen casing
61 are delivered to the end of drilling 9, and Grouting Pipe 1 is delivered at predeterminated position 92.So, can by conveying device 64, it is convenient,
Pressure break pipe 6 and grouting device 500 are reliably delivered to the specified location in fracturing borehole 9, it is not necessary to increase extra auxiliary
Equipment, it is possible to decrease the cost of whole pressure break hole sealing device.Further, the pressure break hole sealing device that the present embodiment is provided, due to pressure
Splitting pipe 6 includes flexible pipe 62, and the length of a flexible pipe 62 is longer, so so that the joint negligible amounts of pressure break pipe 6, so,
During using 6 water delivery pressure break coal seam of pressure break pipe, it can further avoid occurring drainage.
The pressure break hole sealing device that the present embodiment is provided, by being set to include flexible pipe, rigid pipe, screen casing and defeated by pressure break pipe
Device is sent, and one end of rigid pipe is connected with flexible pipe, the other end of rigid pipe is connected with screen casing, the second closure dress of grouting device
Put and be connected with rigid pipe, conveying device is fixedly connected with rigid pipe.So, because pressure break pipe includes flexible pipe, and flexible pipe
Length is longer, so, can reduce the joint quantity of whole pressure break pipe, to avoid because of pressure break pipe joint causing in water delivery pressure break coal more
Occurs drainage during layer.In addition, the pressure break hole sealing device that the present embodiment is provided, when conveying device is in fracturing borehole
When being promoted, conveying device can drive pressure break pipe and grouting device to be moved to the end of fracturing borehole, so that screen casing is moved to pressure
The end of drilling is split, and, Grouting Pipe is moved to predetermined position, this way it is not necessary to increase extra auxiliary equipment, just may be used
So that pressure break pipe and grouting device are delivered into specified location, it is possible to decrease the cost of whole pressure break hole sealing device.
Further, the first plugging device 2 is also connected with conveying device 64.
Specifically, the first plugging device 2 can be connected by connecting rope with conveying device 64.For example, can (can by connecting rope
Think iron wire) the first plugging device 2 is banded on the outer wall of conveying device 64, to realize that the first plugging device 2 and conveying are filled
The connection put.Fig. 7 shows the structural representation that a kind of first plugging device 2 coordinates with conveying device 64, this kind of realization side
In formula, the first plugging device 2 can be the plugging bag with the second cylindrical hole 21 (for example, can be the knot of similar water wing
Structure), and be provided with the side of the second cylindrical hole 21 on second connecting rope 22, the outer wall of conveying device 64 and be provided with the second connection
Conveying device 64, so, can be located in the second cylindrical hole 21, and the second connecting rope 22 is bundled in into the second connection by portion 641
In portion 641, to realize the first plugging device 3 and the connection of conveying device 63.It should be noted that Fig. 6 is refer to, when the first envelope
When block apparatus 2 is the plugging bag with the second cylinder 21, flexible pipe 62 and slurry recovering tube 7 can also be also located in the second cylindrical hole 21
It is interior.First plugging device 2 is fixed in conveying device 64 by the second connecting rope 22 in addition, working as, and by flexible pipe 62 and returns slurry
When pipe 7 is located in the second cylindrical hole, the side of the second cylindrical hole 21 will respectively with flexible pipe 62, slurry recovering tube 7 and conveying device 64
It is brought into close contact.
It should be noted that Fig. 7 illustrate only the connected mode of a kind of second plugging device 2 and conveying device 64, may be used also
So that the first plugging device 2 is connected in conveying device 64 by other means, do not repeated one by one herein on specific method.
The pressure break hole sealing device that the present embodiment is provided, by the way that the first plugging device is connected with conveying device, so, can prevent
Only Grouting Pipe occurs bending, stacks phenomenon, to reduce the frictional resistance in course of conveying, successfully conveys pressure break hole sealing device
To precalculated position.
A specific embodiment is given below, to describe the specific connected mode of conveying device and rigid pipe in detail.
The structural representation of pressure break pipe in the pressure break hole sealing device that Fig. 8 provides for the utility model embodiment five；Fig. 9 is
The structural representation of silk cap in the pressure break hole sealing device that the utility model embodiment five is provided；Figure 10 is implemented for the utility model
The structural representation of conveying device in the pressure break hole sealing device that example five is provided；Figure 11 is what the utility model embodiment five was provided
The structural representation that pipe clamp in pressure break hole sealing device coordinates with rigid pipe.It refer to Fig. 8 to Figure 11, the pressure that the present embodiment is provided
Split and the female silk cap 66 of tool be provided with hole sealing device, the outer wall of rigid pipe 63, conveying device 64 has external screw thread 642,
External screw thread 642 and the matching of above-mentioned internal thread, conveying device 64 are fixedly connected by silk cap 66 with rigid pipe 63；
Pipe clamp 65 is additionally provided with the outer wall of rigid pipe 63, the axis 651 of pipe clamp 65 and the axis 661 of silk cap 66 are overlapped,
Pipe clamp 65 is used for the outer wall of clamping conveying device 64.
Specifically, the coal bed fracturing pipe that the present embodiment is provided, flexible pipe 62 is sebific duct, and rigid pipe 63 is metal tube, conveying dress
It is metal tube to put 64.Alternatively, rigid pipe 63 is steel pipe, and conveying device 64 is many iron pipes, and iron pipe is using tube coupling connection.And
One end of rigid pipe 63 is connected by rubber hose coupling 67 with flexible pipe 62, and the other end of rigid pipe 63 is connected by screw thread 68 with screen casing 61
Connect.It should be noted that the concrete structure of rubber hose coupling 67 and screw thread 68 may refer to description of the prior art, herein no longer
Repeat.
Specifically, refer to Fig. 8 and Fig. 9, silk cap 66 is arranged on rigid pipe 63 and is close to one end of screen casing 61, and silk cap 66
There is internal thread (not shown) on hollow cylindrical shape structure, the inwall of cylinder.It should be noted that silk cap 66 is adopted
It is made of metal material, and silk cap 66 is fixed on the outer wall of rigid pipe 63 that (specifically, silk cap 66 passes through by way of welding
Side is welded on rigid pipe 63).
It refer in Figure 10, the present embodiment, there is external screw thread 642, and external screw thread 642 and silk on the outer wall of conveying device 64
Internal thread matching on cap 66.Further, referring to Fig. 8 to Figure 10, in the present embodiment, conveying device 64 passes through silk cap
66 are fixedly connected with rigid pipe 63.
Further, Fig. 8 and Figure 11 be refer to, pipe clamp 65 is welded on the outer wall of rigid pipe 63 that (specifically, pipe clamp 65 is welded
Rigid pipe 63 is connected on close to one end of flexible pipe 62), and after pipe clamp 65 is welded on the outer wall of rigid pipe 63, the axle of pipe clamp 65
Line 651 is overlapped with the axis 661 of silk cap 66, so, conveying device 64 can also cross silk cap 66 and pipe clamp 65, and with silk cap
66 are threadably secured, and pipe clamp 65 is then fastened on the outer wall of conveying device 64.
It should be noted that in the present embodiment, the concrete structure of pipe clamp 65 may refer to description of the prior art, herein
Repeat no more.
The structural representation of pressure break pipe in the pressure break hole sealing device that Figure 12 provides for the utility model embodiment six.Upper
State on the basis of embodiment, the pressure break hole sealing device that the present embodiment is provided, conveying device 64 is also connected with flexible pipe 62.
Specifically, referring to Figure 12, conveying device 64 can be connected by tie string 10 with flexible pipe 62.
In the present embodiment, conveying device 64 is connected with flexible pipe 62, so, is promoting conveying device 64, whole coal seam is pressed
Split during pipe is delivered in fracturing borehole 9, can prevent flexible pipe 62 from bending, stacking, and then reduce the friction in course of conveying
Resistance, smoothly can be transported to precalculated position by pressure break hole sealing device.
The pressure break hole sealing device that the present embodiment is provided, by the way that conveying device and flexible pipe are connected, so, pressure break pipe is defeated
When delivering in fracturing borehole, flexible pipe can be avoided to occur the frictional resistance in bending, the phenomenon stacked, and then reduction course of conveying,
Pressure break hole sealing device smoothly can be transported to precalculated position.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
1. a kind of grouting device, it is characterised in that including：Grouting Pipe, the first plugging device, the second plugging device and switch dress
Put, the first grout outlet, the second grout outlet and the 3rd grout outlet are provided with the Grouting Pipe, first grout outlet is located at pressure break
At the aperture of drilling, second grout outlet is located at the predetermined position of the fracturing borehole, and the 3rd grout outlet is located at institute
State between the first grout outlet and second grout outlet；
First plugging device is arranged at first grout outlet, and second plugging device is arranged on second pulp
Mouthful at, the Grouting Pipe respectively with first plugging device and the second plugging device unilaterally connected, the switching device
It is arranged at the 3rd grout outlet；
The switching device, for when injection slurry enters first plugging device and second plugging device, described
The first sealing of hole layer and predetermined position formation the second sealing of hole layer in the fracturing borehole are formed at the aperture of fracturing borehole
Afterwards, the 3rd grout outlet is opened, so that injection slurry enters the fracturing borehole.
2. device according to claim 1, it is characterised in that first grout outlet connects described by the first check valve
First plugging device, so that the injection slurry is unidirectionally flow in first plugging device.
3. device according to claim 2, it is characterised in that second grout outlet connects described by the second check valve
Second plugging device, so that the injection slurry is unidirectionally flow in second plugging device.
4. the device according to claim any one of 1-3, it is characterised in that the switching device is pressure explosive valve.
5. device according to claim 4, it is characterised in that first plugging device and second plugging device are equal
For plugging bag.
6. a kind of pressure break hole sealing device, it is characterised in that including：Pressure break pipe, slurry recovering tube and as described in claim any one of 1-5
Grouting device；Wherein,
The switching device of the grouting device, for entering first plugging device and second plugging device when injection slurry
When, the first sealing of hole layer and predetermined position the second envelope of formation in fracturing borehole are formed at the aperture of the fracturing borehole
After aperture layer, the grout outlet of the switching device control is opened, so that injection slurry enters the fracturing borehole, the pressure break pipe is blocked
The space between space and the slurry recovering tube and the fracturing borehole between the fracturing borehole.
7. device according to claim 6, it is characterised in that the pressure break pipe includes：Flexible pipe, rigid pipe, screen casing and defeated
Device is sent, one end of the rigid pipe is connected with the flexible pipe, and the other end of the rigid pipe is connected with the screen casing；The note
Second plugging device of sizing device is fixedly connected with the rigid pipe；
The conveying device is fixedly connected with the rigid pipe, described when the conveying device is promoted in fracturing borehole
Conveying device drives the pressure break pipe and the grouting device to be moved to the end of the fracturing borehole, so that the screen casing is moved
To the end of the fracturing borehole, and, the Grouting Pipe is moved to the predetermined position.
8. device according to claim 7, it is characterised in that first plugging device also connects with the conveying device
Connect.
9. device according to claim 8, it is characterised in that tool is provided with the outer wall of the rigid pipe female
Silk cap, the conveying device has external screw thread, the external screw thread and internal thread matching, and the conveying device passes through the silk
Cap is fixedly connected with the rigid pipe；
Pipe clamp, the axis coincidence of the axis of the pipe clamp and the silk cap, the pipe are additionally provided with the outer wall of the rigid pipe
Block the outer wall for conveying device described in clamping.
10. device according to claim 9, it is characterised in that the conveying device is also connected with the flexible pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621338609.0U CN206513343U (en) | 2016-12-07 | 2016-12-07 | Grouting device and pressure break hole sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621338609.0U CN206513343U (en) | 2016-12-07 | 2016-12-07 | Grouting device and pressure break hole sealing device |
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| Publication Number | Publication Date |
|---|---|
| CN206513343U true CN206513343U (en) | 2017-09-22 |
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ID=59862425
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621338609.0U Active CN206513343U (en) | 2016-12-07 | 2016-12-07 | Grouting device and pressure break hole sealing device |
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| CN (1) | CN206513343U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708768A (en) * | 2018-06-04 | 2018-10-26 | 徐州中国矿大岩土工程新技术发展有限公司 | Slip casting tube head, grouting device and its construction method |
| CN108845373A (en) * | 2018-04-20 | 2018-11-20 | 大连理工大学 | It is classified the detection method of buck borehole fissure |
-
2016
- 2016-12-07 CN CN201621338609.0U patent/CN206513343U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108845373A (en) * | 2018-04-20 | 2018-11-20 | 大连理工大学 | It is classified the detection method of buck borehole fissure |
| CN108845373B (en) * | 2018-04-20 | 2019-08-30 | 大连理工大学 | It is classified the detection method of buck borehole fissure |
| CN108708768A (en) * | 2018-06-04 | 2018-10-26 | 徐州中国矿大岩土工程新技术发展有限公司 | Slip casting tube head, grouting device and its construction method |
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