CN208816120U - A kind of steel gas fracturing pipe - Google Patents
A kind of steel gas fracturing pipe Download PDFInfo
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- CN208816120U CN208816120U CN201821498190.4U CN201821498190U CN208816120U CN 208816120 U CN208816120 U CN 208816120U CN 201821498190 U CN201821498190 U CN 201821498190U CN 208816120 U CN208816120 U CN 208816120U
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Abstract
The utility model is suitable for rock expansion fracturing equipment technical field, disclose a kind of steel gas fracturing pipe, it include: liquid storage pipe, the liquid storage pipe is made of steel material, the liquid storage pipe includes: the liquid storage pipe main body for surrounding gas accommodating space jointly, underseal part and closedtop part with being set in the liquid storage pipe main body and being located at both ends, seal and are fixedly linked between the liquid storage pipe main body and the underseal part；It seals and is fixedly linked between the liquid storage pipe main body and the closedtop part.Compared with the relevant technologies, a kind of liquid storage pipe of steel gas fracturing pipe of the application be thin-wall steel tube, do not have liquid storage function outside hole, cannot fill carbon dioxide be used as explosion object, guarantee fracturing pipe using safe.In the fracturing hole with crack crack that its fracturing pipe for being mainly used for plastic material is not available, liquid storage pipe is filled in hole under the support of hole wall.The mode inflated in hole ensure that being normally carried out and site operation safety for fracturing pipe charging operation.
Description
Technical field
The utility model belongs to rock expansion fracturing equipment technical field more particularly to a kind of steel gas fracturing pipe.
Background technique
Carbon dioxide fracturing equipment is using liquid carbon dioxide by thermal evaporation expansion, and then quick release high pressure gas comes
Achieve the purpose that be broken rock or coal breakage.Many advantages, such as since it is controllable with swelliong power, power is big, does not generate shock wave
Be widely used in city change, the fields such as urban construction and exploitation of mineral resources.
A kind of gas fracturing pipe involved in the relevant technologies, liquid storage pipe are plastic tube, and when filling, liquid storage pipe is placed in fracturing
In hole, under the support of fracturing hole hole wall, charging operation in the hole of liquid storage pipe is realized.The deficiency of the relevant technologies is, the liquid storage
The pipe structure situation relatively intact suitable for the hole wall in fracturing hole, when the hole wall in fracturing hole has the crack of one fixed width, modeling
The liquid storage pipe of material is expected when filling, and fracturing hole hole wall can not provide complete support, when filling high pressure gas, plastic material
Liquid storage pipe breakage may occur because of unbearable expansive force at the position that imperforate wall supports, and lead to gas filling failure and portion
Part damage, or even appear in it is offhand in the case where, high pressure abrupt release, the safety problem of initiation.
Therefore, it is really necessary to provide a kind of new steel gas fracturing pipe solution above-mentioned technical problem.
Utility model content
The utility model provides a kind of steel gas fracturing pipe, it is intended to solve the technical issues of referring in background technique.
The utility model is realized in this way a kind of steel gas fracturing pipe, comprising: liquid storage pipe, the liquid storage pipe are steel
Prepared material is made, and the generally cylinder of the liquid storage pipe, the liquid storage pipe includes: the liquid storage for surrounding gas accommodating space jointly
Pipe main body, and in the liquid storage pipe main body and be located at the underseal part and closedtop part at both ends, the liquid storage pipe main body with
It seals and is fixedly linked between the underseal part；It seals and is fixedly linked between the liquid storage pipe main body and the closedtop part；Its
In: the liquid storage pipe main body is the hollow cylindrical of both ends open；The underseal part includes: the underseal part one of circular plate, and
Circular underseal part two made of being extended as the side wall of the underseal part one, the underseal part two and the liquid storage pipe main body
Inner wall is fixedly linked, and one end of the upper end far from the liquid storage pipe main body of the underseal part one and the liquid storage pipe main body
Lower end is concordantly arranged；The closedtop part includes: the closedtop part one of circular plate, and is extended by the side wall of the closedtop part one
Circular closedtop part two, the closedtop part two and the inner wall of the liquid storage pipe main body are fixedly linked, and the closedtop part one
One end of the lower end far from the liquid storage pipe main body concordant with the upper end of the liquid storage pipe main body be arranged；The liquid storage pipe main body
Wall thickness be 1-5mm.
Preferably, the wall thickness of the liquid storage pipe main body is 1.5mm.
Preferably, the steel gas fracturing pipe further includes check valve assembly；There is closed gas in the liquid storage pipe
Accommodating space, the upper end of the liquid storage pipe are equipped with the aeration aperture for being connected to the gas accommodating space and exterior space；It is described unidirectional
Valve module includes check valve body and the gas tube that is connected with the check valve body；It is empty that the check valve body is set to gas receiving
In, one end of the gas tube is fixedly linked after passing through the aeration aperture with the check valve body；The aeration aperture runs through institute
State closedtop part.
Preferably, the check valve body includes: the first main valve body, the first connection valve body, the first compressed spring, the first ball
Body；First main valve body be equipped with the first spring retention chamber and the first main valve body for being connected to first spring retention chamber into
Stomata；The first spring retention cavity wall is equipped with the first connection internal screw thread, and first compressed spring is set to first bullet
In spring accommodating cavity and one end far from the first main valve body air inlet of first sphere and first compressed spring；Institute
The first connection valve body is stated equipped with the first connection valve body air inlet and the first control for connecting the connection of valve body air inlet with described first
Drilling, the diameter value of first control hole are less than the sphere diameter value of first sphere；The close institute of the first connection valve body
One end outer wall for stating the first main valve body is equipped with and described first connect that internal screw thread matches first connects external screw thread, and described first
One end close to first main valve body of connection valve body connect valve body with described first and is fixedly linked；The gas tube is fixed on
In the first connection valve body air inlet.
Preferably, the first main valve body air inlet is cylindrical hole, and first spring retention chamber is cylindrical hole, institute
The diameter for stating the first main valve body air inlet is less than the diameter of first spring retention chamber.
Preferably, the check valve body includes: the second main valve body, the second spool, the second sealing ring；Second main valve body
Including being formed in second main valve body and sequentially the second main valve body air inlet, the second control hole, the second main valve body that are connected to
Stroke hole, second main valve body further include being formed in intracorporal second main valve body of second main valve to be filled with hole, and described second
It is 1-4 that main valve body, which is filled with hole, and second main valve body is filled with hole and is connected to second control hole；Second control hole is circle
Bellmouth, second spool are the cone shape adaptable with the second control hole shape；The second sealing snare
Set on second spool outer wall, second spool is set in second control hole.
Preferably, the steel gas fracturing pipe further includes lead and igniter, and the igniter is received set on the gas
Hold in space, one end of the lead is connected with the igniter, and the other end of the lead runs through the upper end of the liquid storage pipe
And it stretches out outside the liquid storage pipe.
Preferably, it seals and is fixedly linked between the outer wall of the lead and the liquid storage pipe.
Preferably, the lead includes positive wire and negative wire, and the positive wire and negative wire interval are arranged
And it is located at the opposite two sides of the check valve assembly.
Preferably, it is connected between the underseal part one and the underseal part two for arc transition；The closedtop part one and institute
It states and is connected between closedtop part two for arc transition.
Compared with the relevant technologies, a kind of liquid storage pipe of steel gas fracturing pipe of the application is thin-wall steel tube, because tube wall is relatively thin,
So not having liquid storage function outside the unsupported hole of tube wall, carbon dioxide cannot be filled and be used as explosion object.In this way, can effectively prevent
It has only filled and the fracturing pipe that can be used as explosion object circulates outside, or even abused by criminal, the society that causes damages etc. is existing
As the case where occur, guarantee fracturing pipe using safe.Liquid storage pipe in a kind of steel gas fracturing pipe of the application is thin-walled
Steel pipe is mainly used in the fracturing hole with crack crack that fracturing pipe made of plastic material is not available, liquid storage pipe
Under the support of hole wall, filled in hole.A kind of steel gas fracturing pipe of the application can be suitable for having one fixed width
Crack fracturing hole.Specifically, the intensity of liquid storage pipe is able to satisfy requirement, is not in split when carrying out filling gas in hole
Pipe phenomenon ensure that being normally carried out and site operation safety for fracturing pipe charging operation.In addition to this, a kind of steel of the utility model
Gas fracturing pipe processed is built in the structure of liquid storage pipe using check valve, realizes inflation and automatic packaging in hole.It avoids cumbersome
Packaging technology, therefore also avoid insecurity factor when encapsulation.It ensure that charging operation safety, improve filling for fracturing pipe
Success rate.And the liquid storage pipe in a kind of steel gas fracturing pipe of the application is the steel pipe of thin-walled, on the one hand, the structure energy of thin-walled
The overall weight for enough reducing fracturing pipe, reduces landed cost, while also safer.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of steel gas fracturing pipe of the utility model；
Fig. 2 is a kind of overall structure diagram of check valve assembly in a kind of steel gas fracturing pipe of the utility model；
Fig. 3 is the overall structure diagram of another check valve assembly in a kind of steel gas fracturing pipe of the utility model.
In figure:
Liquid storage pipe 1, check valve assembly 2, lead 3, igniter 4；
Gas accommodating space 11, liquid storage pipe main body 12, underseal part 13, closedtop part 14；
Check valve body 21, gas tube 22；
Positive wire 31, negative wire 32；
Underseal part 1, underseal part 2 132；
Closedtop part 1, closedtop part 2 142, aeration aperture 143；
First main valve body 211, the first connection valve body 212, the first compressed spring 213, the first sphere 214；
First spring retention chamber 2111, the first main valve body air inlet 2112, the first connection internal screw thread 2113；
First connection valve body air inlet 2121, the first control hole 2122, the first connection external screw thread 2123.
Second main valve body 0211, the second spool 0212, the second sealing ring 0213；
Second connection valve body air inlet 02111, the second control hole 02112, the second main valve body stroke hole 02113, second is main
Valve body is filled with hole 02114.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Referring to Fig. 1-3, a kind of steel gas fracturing pipe, comprising: liquid storage pipe 1, check valve assembly 2.Liquid storage pipe 1 is steel material
Material is made, and the wall thickness of liquid storage pipe main body is 1-5mm.More preferably, the wall thickness of liquid storage pipe main body 12 is 1.5mm.Tool in liquid storage pipe 1
There is closed gas accommodating space 11, the upper end of liquid storage pipe 1 is equipped with the aeration aperture of connection gas accommodating space 11 and exterior space
143；Check valve assembly 2 includes check valve body 21 and the gas tube 22 being connected with check valve body 21；Check valve body 21 is set to gas
In accommodating space 11, one end of gas tube 22 is fixedly linked after passing through aeration aperture 143 with check valve body 21.The entirety of liquid storage pipe 1
For cylinder, liquid storage pipe 1 includes: the liquid storage pipe main body 12 for surrounding gas accommodating space 11 jointly, and is set to liquid storage pipe main body 12
Underseal part 13 and closedtop part 14 interior and that be located at both ends, sealing and stationary phase between liquid storage pipe main body 12 and underseal part 13
Even；It seals and is fixedly linked between liquid storage pipe main body 12 and closedtop part 14；Aeration aperture 143 runs through closedtop part 14.Liquid pipe main body 12
For the hollow cylindrical of both ends open；Underseal part 13 includes: the underseal part 1 of circular plate, and the side by underseal part 1
Wall underseal part 2 132 circular made of extending, underseal part 2 132 and the inner wall of liquid storage pipe main body 12 are fixedly linked, and bottom
One end of the separate check valve body 21 of sealing 1 is concordant with the lower end of liquid storage pipe main body 12 to be arranged；Closedtop part 14 includes: circle
The closedtop part 1 of plate, and circular closedtop part 2 142 as made of the side wall extension of closedtop part 1, closedtop part two
142 are fixedly linked with the inner wall of liquid storage pipe main body 12, and one end of the separate check valve body 21 of closedtop part 1 and liquid storage pipe master
The upper end of body 12 is concordantly arranged.
It should be noted that the structure of check valve body 21 can be a variety of.
As a kind of embodiment of the application, referring to fig. 2, check valve body 21 includes: the connection of the first main valve body 211, first
Valve body 212, the first compressed spring 213, the first sphere 214；First main valve body 211 be equipped with the first spring retention chamber 2111 and with
First main valve body air inlet 2112 of the first spring retention chamber 2111 connection；First spring retention chamber, 2111 inner wall is equipped with first and connects
Internal screw thread 2113 is connect, the first compressed spring 213 is set in the first spring retention chamber 2111 and the first sphere 214 and first compresses bullet
One end far from the first main valve body air inlet 2112 of spring 213；First connection valve body 212 is equipped with the first connection valve body air inlet
2121 and the first control hole 2122 for connecting the connection of valve body air inlet 2121 with first, the diameter value of the first control hole 2122 is less than
The sphere diameter value of first sphere 214；One end outer wall close to the first main valve body 211 of first connection valve body 212 is equipped with to be connected with first
The first connection external screw thread 2123 that internal screw thread 2113 matches is connect, first connects the one of close first main valve body 211 of valve body 212
End connect valve body 212 with first and is fixedly linked；Gas tube 22 is fixed in the first connection valve body air inlet 2121.
First main valve body air inlet 2112 is cylindrical hole, and the first spring retention chamber 2111 is cylindrical hole, the first main valve
The diameter of body air inlet 2112 is thusly-formed less than the diameter of the first spring retention chamber 2111 and is used to support the first compressed spring
213 step.First sphere 214 abuts the first control hole 2122 under the action of the first compressed spring 213, for blocking first
Control hole 2122.
When filling gas, high pressure gas is entered by the first connection valve body air inlet 2121, pushes first under the effect of the pressure
Sphere 214 is mobile, and compresses the first compressed spring 213, and the first control hole 2122 is opened at this time, and gas is through control hole, the first master
Valve body air inlet 2112 enters in liquid storage pipe 1, when reaching filling weight, stops inflation, the first sphere 214 is in compressed spring and storage
It is moved under the action of high pressure gas in liquid pipe 1, and blocks the first control hole 2122, realize automatic packaging.
Another embodiment as the application includes the second main valve body 0211, the second spool referring to Fig. 3 check valve body 21
0212,0,213 second main valve body 0211 of the second sealing ring includes being formed in second be connected in the second main valve body 0211 and sequentially
Main valve body air inlet 02111, the second control hole 02112, the second main valve body stroke hole 02113, the second main valve body 0211 further include
The second main valve body being formed in the second main valve body 0211 is filled with hole 02114, and it is 1-4 that the second main valve body, which is filled with hole 02114, the
Two main valve bodies are filled with hole 02114 and are connected to the second control hole 02112；Second control hole 02112 is round taper hole, the second spool 0212
For the cone shape being adapted with 02112 shape of the second control hole；Second sealing ring 0213 is sheathed on outside the second spool 0212
Wall, the second spool 0212 are set in the second control hole 02112.
When filling gas, high pressure gas is entered by the second connection valve body air inlet 02111, pushes second under the effect of the pressure
Spool 0212 is mobile, and the second spool 0212 is moved in the second main valve body stroke hole 02113, at this time 02112 He of the second control hole
Second main valve body is filled with the connection of hole 02114, and high pressure gas is filled with hole 02114 by the second main valve body and enters in liquid storage pipe 1, fills when reaching
When the demand of loading amount, stopping is filled with high pressure gas, to the second control under the action of high pressure gas of second spool 0212 in liquid storage pipe 1
02112 direction of hole is mobile and the second control hole 02112 of closure and the second main valve body are filled with hole 02114, realizes automatic packaging.Second
The conical surface shape of spool 0212 and the second control hole 02112 cooperates, and is conducive to firm closure, and the second sealing ring 0213 is used for
Improve sealing performance.
Steel gas fracturing pipe further includes lead 3 and igniter 4, and igniter 4 is set in gas accommodating space 11, lead 3
One end be connected with igniter 4, the other end of lead 3 through liquid storage pipe 1 upper end and stretch out outside liquid storage pipe 1.
It seals and is fixedly linked between the outer wall and liquid storage pipe 1 of lead 3.
Lead 3 includes positive wire 31 and negative wire 32, and positive wire 31 and negative wire 32 are spaced setting and difference
Positioned at the opposite two sides of check valve assembly 2.
It is connected between underseal part 1 and underseal part 2 132 for arc transition；Closedtop part 1 and closedtop part 2 142 it
Between for arc transition connect.
It should be noted that " upper end of liquid storage pipe " that refers in the application, " lower end of liquid storage pipe " are with gas fracturing
Subject to up and down direction when pipe merging fracturing hole.
A kind of steel gas fracturing pipe filling process of the utility model is as follows: external filling equipment and gas tube 22 are connected
It connects, filling equipment fills high pressure gas into liquid storage pipe 1 after gas tube 22, check valve body 21, after filling, then disconnects outer
Portion's filling equipment cannot be from check valve into the gas that fills in liquid storage pipe 1 due to the effect of the one-way flow of check valve body 21
Reversed evolution, there is no need to encapsulate, avoids packaging technology cumbersome in background technique, therefore also avoids uneasiness when encapsulation
Total factor.It ensure that charging operation safety, while improve fracturing pipe fills success rate.
Compared with the relevant technologies, a kind of liquid storage pipe of steel gas fracturing pipe of the application is thin-wall steel tube, because tube wall is relatively thin,
So not having liquid storage function outside the unsupported hole of tube wall, carbon dioxide cannot be filled and be used as explosion object.In this way, can effectively prevent
It has only filled and the fracturing pipe that can be used as explosion object circulates outside, or even abused by criminal, the society that causes damages etc. is existing
As the case where occur, guarantee fracturing pipe using safe.Liquid storage pipe in a kind of steel gas fracturing pipe of the application is thin-walled
Steel pipe is mainly used in the fracturing hole with crack crack that fracturing pipe made of plastic material is not available, liquid storage pipe
Under the support of hole wall, filled in hole.A kind of steel gas fracturing pipe of the application can be suitable for having one fixed width
Crack fracturing hole.Specifically, the intensity of liquid storage pipe is able to satisfy requirement, is not in split when carrying out filling gas in hole
Pipe phenomenon ensure that being normally carried out and site operation safety for fracturing pipe charging operation.In addition to this, a kind of steel of the utility model
Gas fracturing pipe processed is built in the structure of liquid storage pipe using check valve, realizes inflation and automatic packaging in hole.It avoids cumbersome
Packaging technology, therefore also avoid insecurity factor when encapsulation.It ensure that charging operation safety, improve filling for fracturing pipe
Success rate.And the liquid storage pipe in a kind of steel gas fracturing pipe of the application is the steel pipe of thin-walled, on the one hand, the structure energy of thin-walled
The overall weight for enough reducing fracturing pipe, reduces landed cost, while also safer.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of steel gas fracturing pipe characterized by comprising liquid storage pipe, the liquid storage pipe is made of steel material, described
The generally cylinder of liquid storage pipe, the liquid storage pipe includes: the liquid storage pipe main body for surrounding gas accommodating space jointly, and is set to institute
The underseal part and closedtop part at both ends are stated in liquid storage pipe main body and are located at, it is close between the liquid storage pipe main body and the underseal part
It seals and is fixedly linked；It seals and is fixedly linked between the liquid storage pipe main body and the closedtop part；Wherein: the liquid storage pipe main body
For the hollow cylindrical of both ends open；The underseal part includes: the underseal part one of circular plate, and the side by the underseal part one
Wall underseal part two circular made of extending, the underseal part two and the inner wall of the liquid storage pipe main body are fixedly linked, and institute
The one end for stating the upper end far from the liquid storage pipe main body of underseal part one concordant with the lower end of the liquid storage pipe main body is arranged；It is described
Closedtop part includes: the closedtop part one of circular plate, and circular closedtop part as made of the side wall extension of the closedtop part one
Two, the closedtop part two and the inner wall of the liquid storage pipe main body are fixedly linked, and the separate liquid storage pipe of the closedtop part one
One end of the lower end of main body is concordant with the upper end of the liquid storage pipe main body to be arranged；The wall thickness of the liquid storage pipe main body is 1-5mm.
2. steel gas fracturing pipe according to claim 1, which is characterized in that the wall thickness of the liquid storage pipe main body is
1.5mm。
3. steel gas fracturing pipe according to claim 2, which is characterized in that the steel gas fracturing pipe further includes list
To valve module；There is closed gas accommodating space, the upper end of the liquid storage pipe, which is equipped with, is connected to the gas in the liquid storage pipe
The aeration aperture of accommodating space and exterior space；The check valve assembly includes check valve body and fills with what the check valve body was connected
Tracheae；The check valve body is set in the gas accommodating space, one end of the gas tube pass through after the aeration aperture with institute
Check valve body is stated to be fixedly linked；The aeration aperture runs through the closedtop part.
4. steel gas fracturing pipe according to claim 3, which is characterized in that the check valve body includes: the first main valve
Body, the first connection valve body, the first compressed spring, the first sphere；First main valve body be equipped with the first spring retention chamber and with
First main valve body air inlet of the first spring retention chamber connection；The first spring retention cavity wall is equipped in the first connection
Screw thread, first compressed spring intracavitary and described first sphere and first compressed spring set on first spring retention
Far from the first main valve body air inlet one end；It is described first connection valve body be equipped with first connection valve body air inlet and with
First control hole of the first connection valve body air inlet connection, the diameter value of first control hole are less than first sphere
Sphere diameter value；One end outer wall close to first main valve body of the first connection valve body, which is equipped with, connect interior spiral shell with described first
The first connection external screw thread that line matches, one end and described first close to first main valve body of the first connection valve body
Connection valve body is fixedly linked；The gas tube is fixed in the first connection valve body air inlet.
5. steel gas fracturing pipe according to claim 4, which is characterized in that the first main valve body air inlet is cylinder
Shape hole, first spring retention chamber are cylindrical hole, and the diameter of the first main valve body air inlet is less than first spring
The diameter of accommodating cavity.
6. steel gas fracturing pipe according to claim 3, which is characterized in that the check valve body includes: the second main valve
Body, the second spool, the second sealing ring；Second main valve body includes for being formed in second main valve body and being sequentially connected to
Two main valve body air inlets, the second control hole, the second main valve body stroke hole, second main valve body further includes being formed in described second
Intracorporal second main valve body of main valve is filled with hole, and it is 1-4 that second main valve body, which is filled with hole, and second main valve body is filled with Kong Lian
Lead to second control hole；Second control hole is round taper hole, and second spool is and the second control hole shape
Adaptable cone shape；Second sealing ring is sheathed on second spool outer wall, and second spool is set to described
In second control hole.
7. according to the described in any item steel gas fracturing pipes of claim 4-6, which is characterized in that the steel gas fracturing pipe
It further include lead and igniter, the igniter is set in the gas accommodating space, one end of the lead and the igniting
Device is connected, and the other end of the lead runs through the upper end of the liquid storage pipe and stretches out outside the liquid storage pipe.
8. steel gas fracturing pipe according to claim 7, which is characterized in that the outer wall of the lead and the liquid storage pipe
Between seal and be fixedly linked.
9. steel gas fracturing pipe according to claim 8, which is characterized in that the lead includes positive wire and cathode
Lead, the positive wire and the setting of negative wire interval and the opposite two sides for being located at the check valve assembly.
10. steel gas fracturing pipe according to claim 9, which is characterized in that the underseal part one and the underseal part
It is connected between two for arc transition；It is connected between the closedtop part one and the closedtop part two for arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821498190.4U CN208816120U (en) | 2018-09-13 | 2018-09-13 | A kind of steel gas fracturing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821498190.4U CN208816120U (en) | 2018-09-13 | 2018-09-13 | A kind of steel gas fracturing pipe |
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| Publication Number | Publication Date |
|---|---|
| CN208816120U true CN208816120U (en) | 2019-05-03 |
Family
ID=66276958
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| CN201821498190.4U Active CN208816120U (en) | 2018-09-13 | 2018-09-13 | A kind of steel gas fracturing pipe |
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| CN (1) | CN208816120U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578522A (en) * | 2019-10-25 | 2019-12-17 | 方莹 | Application method of fracturing pipe |
-
2018
- 2018-09-13 CN CN201821498190.4U patent/CN208816120U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578522A (en) * | 2019-10-25 | 2019-12-17 | 方莹 | Application method of fracturing pipe |
| CN110578522B (en) * | 2019-10-25 | 2021-03-02 | 方莹 | Application method of fracturing pipe |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230316 Address after: 516083 No. 23, Shihua Avenue West, Xiangshui River, Daya Bay West District, Huizhou City, Guangdong Province (Research Building) Patentee after: Hunan Kaili Electromechanical Equipment Co.,Ltd. Huizhou Branch Address before: 518114 Floor 2, Zone C, Qianjiang Art Center, Nanwan Street, Longgang District, Shenzhen City, Guangdong Province Patentee before: Fang Ying |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230612 Address after: B902, Building 2, Shenzhen Bay Science and Technology Ecological Park, No. 1809 Shahe West Road, High tech Zone Community, Yuehai Street, Shenzhen City, Guangdong Province, 518063 Patentee after: Guangdong Hongkai Gas Energy Technology Co.,Ltd. Address before: 516083 No. 23, Shihua Avenue West, Xiangshui River, Daya Bay West District, Huizhou City, Guangdong Province (Research Building) Patentee before: Hunan Kaili Electromechanical Equipment Co.,Ltd. Huizhou Branch |