CN208534445U - A kind of gas well device for plugging and gas well drilling equipment - Google Patents
A kind of gas well device for plugging and gas well drilling equipment Download PDFInfo
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- CN208534445U CN208534445U CN201821320802.0U CN201821320802U CN208534445U CN 208534445 U CN208534445 U CN 208534445U CN 201821320802 U CN201821320802 U CN 201821320802U CN 208534445 U CN208534445 U CN 208534445U
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- curved portion
- snap ring
- gas well
- plugging
- well device
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Abstract
The utility model relates to gas well apparatus fields, in particular to a kind of gas well device for plugging and gas well drilling equipment.Gas well device for plugging include: with matched first snap ring of production casing, the first snap ring includes the first curved portion being detachably connected, the second curved portion；With matched second snap ring of surface pipe, the second snap ring includes the third curved portion being detachably connected, the 4th curved portion, and the third snap ring being sheathed on outside the first snap ring and the second snap ring, third snap ring includes the 5th curved portion, the 6th curved portion being detachably connected.First snap ring is arranged in outside production casing, and the second snap ring is arranged in outside surface pipe, and third snap ring fastens the first snap ring and the second snap ring, can achieve the effect of leak stopping.Coal seam gas leakage at the well head doughnut-shaped steel plate of coal bed gas well is repaired, weld job is avoided, is inherently eliminated a possibility that Lighting-blast casualty occurs, reduces the security risk of welding procedure personnel.
Description
Technical field
The utility model relates to gas well apparatus fields, set in particular to a kind of gas well device for plugging and gas well drilling
It is standby.
Background technique
Coal bed gas well production year limit for length, average out to 15 years or more, and because of the unique casing programme of coal bed gas well, free segment
Production casing is outer without cement sheath, outside the production casing of free segment directly and combination of zones, meanwhile, doughnut-shaped steel plate has a single function,
It is merely able to suspension production casing, does not seal the function of surface pipe Yu production casing annular space, production casing is because of burn into set
Damage, cementing quality difference etc. influence, and with the extension of production time, in subsequent production, coal bed gas easily occurs from surface pipe
Annular space between production casing is migrated to well head doughnut-shaped steel plate, is leaked in well head.
It is repaired in the prior art by welding manner, by doughnut-shaped steel plate upper and lower end face and surface pipe, production casing
It is respectively welded, to achieve the purpose that sealing.
Utility model content
The purpose of this utility model is to provide a kind of gas well device for plugging and gas well drilling equipment, are intended to improve existing
Gas well leakage repairing remedy the big and ineffective problem of difficulty.
The utility model provides a kind of technical solution:
A kind of gas well device for plugging, gas well device for plugging include:
With matched first snap ring of production casing, the first snap ring includes the first curved portion being detachably connected, the second arc
Portion, the first curved portion are connect with the second curved portion by the first connector；
With matched second snap ring of surface pipe, the second snap ring includes the third curved portion being detachably connected, the 4th arc
Portion, third curved portion are connect with the 4th curved portion by the second connector；
The third snap ring being sheathed on outside the first snap ring and the second snap ring, third snap ring include the 5th arc being detachably connected
Portion, the 6th curved portion, the 5th curved portion are connect with the 6th curved portion by third connector.
In the other embodiments of the utility model, above-mentioned third snap ring is provided with greasing hole, and third card is run through in greasing hole
Ring and the gap area between the first snap ring, the second snap ring.
In the other embodiments of the utility model, check valve is provided in above-mentioned greasing hole.
In the other embodiments of the utility model, above-mentioned first curved portion, the second curved portion, third curved portion, the 4th
Curved portion inner wall is respectively connected with seal rubber piece.
In the other embodiments of the utility model, the end of the above-mentioned seal rubber piece for being set to the first curved portion inner wall
It being obliquely installed along first direction, the end for being set to the seal rubber piece of the second curved portion inner wall is obliquely installed in a second direction,
First direction is reversed with second direction.
In the other embodiments of the utility model, the above-mentioned seal rubber piece for being set to the first curved portion inner wall is in first
Arc end surface extends to the first curved portion outer wall；The seal rubber piece of the second curved portion inner wall is set in the second curved portion end
Face extends to the second curved portion outer wall.
In the other embodiments of the utility model, above-mentioned 5th curved portion, the 6th curved portion inner wall are respectively connected with sealing
Sheet rubber.
In the other embodiments of the utility model, the material of above-mentioned seal rubber piece is hydrogenated nitrile-butadiene rubber.
In the other embodiments of the utility model, the free end of above-mentioned first curved portion and the free end of the second curved portion
The distance between be 2-3mm.
The utility model also provides a kind of technical solution:
A kind of gas well drilling equipment, gas well drilling equipment include above-mentioned gas well device for plugging.
The beneficial effect of gas well device for plugging provided by the embodiment of the utility model and gas well drilling equipment is:
First snap ring is arranged in outside production casing, and the second snap ring is arranged in outside surface pipe, the first card of third snap ring fastening
Ring and the second snap ring, can achieve the effect of leak stopping.Coal seam gas leakage at the well head doughnut-shaped steel plate of coal bed gas well is robbed
It repairs, avoids weld job, be inherently eliminated a possibility that Lighting-blast casualty occurs, reduce the safety wind of welding procedure personnel
Danger.
Gas well device for plugging is designed for the shaft collar of coal bed gas well, has with strong points, and structure is simple, cost
It is cheap.The repairing tool simple installation, quick relative to weld job, the set-up time is short, and the labour for alleviating construction personnel is strong
Degree improves production efficiency.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 shows the structural schematic diagram of gas well device for plugging provided by the embodiment of the utility model,
Fig. 2 shows the structural schematic diagrams of gas well gas production；
Fig. 3 shows the structural schematic diagram of the first snap ring provided by the embodiment of the utility model；
Fig. 4 shows the structural schematic diagram of the first snap ring provided by the embodiment of the utility model, the second snap ring；
Fig. 5 shows the structure for two seal rubber pieces that the first snap ring inner wall provided by the embodiment of the utility model is sticked
Schematic diagram.
Icon: 100- gas well device for plugging；101- production casing；102- surface pipe；103- seal rubber piece；110-
One snap ring；The first curved portion of 111-；The second curved portion of 112-；The first connector of 113-；The second snap ring of 120-；121- third arc
Portion；The 4th curved portion of 122-；The second connector of 123-；130- third snap ring；The 5th curved portion of 131-；The 6th curved portion of 132-；
133- third connector；134- greasing hole.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the utility model embodiment, it is to be understood that term " center ", "upper", "lower", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "inner", "outside" is orientation based on the figure or position
The relationship utility model product using when the orientation or positional relationship usually put or those skilled in the art
The orientation or positional relationship usually understood, is merely for convenience of describing the present invention and simplifying the description, rather than instruction or dark
Show that signified equipment or element must have a particular orientation, is constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the utility model.
In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, it is not understood to indicate or imply
Relative importance.
In the description of the utility model embodiment, it is also necessary to which explanation is unless specifically defined or limited otherwise, art
Language " setting ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachable
Connection, or be integrally connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The connection in portion.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
Embodiment
Fig. 1 shows the structural schematic diagram of gas well device for plugging 100 provided by the embodiment of the utility model, please refers to Fig. 1.
The present embodiment provides a kind of gas well device for plugging 100, the leakage being mainly used at the well head doughnut-shaped steel plate of coal bed gas well.It can manage
Solution, the utility model are not defined the purposes of gas well device for plugging 100.
In the present embodiment, gas well device for plugging 100 includes the first snap ring 110, the second snap ring 120 and third snap ring
130；First snap ring 110, the second snap ring 120 and third snap ring 130 are coaxially disposed.Third snap ring 130 is sheathed on the first card
Outside ring 110, the second snap ring 120.
Fig. 2 shows the structural schematic diagram of gas well gas production, Fig. 3 shows the first snap ring provided by the embodiment of the utility model
110 structural schematic diagram；Please refer to Fig. 2 and Fig. 3.
First snap ring 110 includes the first curved portion 111, the second curved portion 112 being detachably connected, the first curved portion 111
It is connect with the second curved portion 112 by the first connector 113；
In the present embodiment, the first connector 113 is bolt, and the first connector 113 passes through the first curved portion 111 and second
Curved portion 112 connects.
First snap ring 110 is matched with production casing 101.The first snap ring 110 is set to be arranged in outside production casing 101.First
Snap ring 110 is realized by the cooperation of the first connector 113 and the first curved portion 111, the second curved portion 112 and is fixed.
Further, in the present embodiment, in order to reduce the requirement of 110 inner wall precision of the first snap ring, in the present embodiment,
First curved portion 111, the second curved portion 112 inner wall be respectively provided with (such as bonding) and have seal rubber piece 103；First connector
After 113 connect the first curved portion 111 with the second curved portion 112, the seal rubber piece 103 of two sides can be also bonded.
It in the present embodiment, is not a complete ring after the first curved portion 111, the fitting of the second curved portion 112.The
The distance between the free end of one curved portion 111 and the free end of the second curved portion 112 are 3mm.In other words, the first curved portion
111, after the connection of the second curved portion 112, the gap of the first curved portion 111 and 112 junction of the second curved portion with 3mm.
Gas well device for plugging 100 is mainly used for the gas well of pressure smaller (0.3mPa or less).It is sent out by the experiment of inventor
Existing, sealing performance is preferable when the first curved portion 111 has 2-3mm with 112 junction of the second curved portion.
The gap that first curved portion 111 is connect with the second curved portion 112 is smaller or does not have, the first curved portion 111, second
Curved portion 112, which generates deformation, will increase the gap between the first snap ring 110 and production casing 101, and plugging effect is poor, and rigidity the
One curved portion 111, the second curved portion 112 under the influence of gas can phase mutual friction cause generate gap, end-face deformation.
When the gap that first curved portion 111 is connect with the second curved portion 112 is larger, since the coal gas of leakage has a level pressure
Power (0.3mPa or so) will lead to the first snap ring 110 and concentrate on the first connector 113, gas pair to the stress of production casing 101
It will lead to the first curved portion 111 after its action time is longer and 112 gap of the second curved portion be excessive, plugging effect is poor.
Fig. 4 shows the structural schematic diagram of the first snap ring 110 provided by the embodiment of the utility model, the second snap ring 120, asks
Refering to Fig. 2 and Fig. 4.
In the present embodiment, the shape of the second snap ring 120 is similar to the shape of the first snap ring 110, is only that size is not identical,
Second snap ring 120 is matched with surface pipe 102, and the outer diameter of the internal diameter and surface pipe 102 of the second snap ring 120 matches.
The outer diameter of second snap ring 120 is identical as the outer diameter of the first snap ring 110.
Correspondingly, the second snap ring 120 includes third curved portion 121, the 4th curved portion 122 being detachably connected, third arc
Shape portion 121 is connect with the 4th curved portion 122 by the second connector 123.
Further, third curved portion 121, the 4th curved portion 122 inner wall be respectively provided with (such as bonding) and have seal rubber
Piece 103.
Correspondingly, in the present embodiment, the gap of third curved portion 121,122 junction of the 4th curved portion with 3mm.
Referring to Fig. 1, in the present embodiment, third snap ring 130 include be detachably connected the 5th curved portion 131,
6th curved portion 132, the 5th curved portion 131 are connect with the 6th curved portion 132 by third connector 133.
From the above, in the present embodiment, the internal diameter of third snap ring 130 and the second snap ring 120, the first snap ring 110 it is outer
Diameter matches.
Correspondingly, the 5th curved portion 131, the 6th curved portion 132 inner wall be respectively provided with (such as bonding) and have seal rubber piece
103.5th curved portion 131,132 junction of the 6th curved portion have the gap of 3mm.
First snap ring 110 is arranged in outside production casing 101, and the second snap ring 120 is arranged in outside surface pipe 102, third card
Ring 130 fastens the first snap ring 110 and the second snap ring 120, can achieve the effect of leak stopping.
Further, in the present embodiment, in order to increase the effect of leak stopping, third snap ring 130 is provided with greasing hole 134,
Third snap ring 130 and the gap area between the first snap ring 110, the second snap ring 120 are run through in greasing hole 134.
Stop-leak compound is injected into hole by greasing hole 134, it can be by the first snap ring 110, the second snap ring 120, third snap ring
Gap sealing between 130.
Further, in order to avoid sealing ester is flow backwards out of greasing hole 134, in the present embodiment, setting in greasing hole 134
There is check valve.Check valve can flow back to avoid the sealing ester in greasing hole 134.
In the present embodiment, the structure of check valve, construction and its connection relationship are all made of the prior art, and the present embodiment is not
It repeats again.
From the above, the first snap ring 110, the second snap ring 120,130 inner wall of third snap ring are provided with seal rubber piece
103。
In the present embodiment, the material of seal rubber piece 103 is hydrogenated nitrile-butadiene rubber.Hydrogenated nitrile-butadiene rubber tool is good resistance to
Hot property, excellent resistance to chemical corrosion (to freon, acid, alkali have good resistance), excellent ozone resistance
Can, higher incompressible permanent deformation performance；Hydrogenated nitrile-butadiene rubber also has high intensity, high tear energy, wear-resisting property simultaneously
The features such as excellent is one of supereminent rubber of comprehensive performance.
The seal rubber piece 103 being prepared using hydrogenated nitrile-butadiene rubber is durable, and sealing performance is good.
In the present embodiment, seal rubber piece 103 is arc-shaped, with the first snap ring 110, the second snap ring 120 or third card
Ring 130 matches.
Be illustrated below with two seal rubber pieces 103 that 110 inner wall of the first snap ring is sticked, the second snap ring 120 or
The set-up mode for the seal rubber piece 103 that 130 inner wall of third snap ring is sticked is identical.
Fig. 5 shows two seal rubber pieces 103 that 110 inner wall of the first snap ring provided by the embodiment of the utility model is sticked
Structural schematic diagram, please refer to Fig. 5.
In the present embodiment, in the present embodiment, it is placed in the end of the seal rubber piece 103 of 111 inner wall of the first curved portion
It is obliquely installed along first direction, the end for being set to the seal rubber piece 103 of 112 inner wall of the second curved portion tilts in a second direction
Setting, first direction are reversed with second direction.
In detail, in the present embodiment, the second curved portion 112 and the first curved portion 111 are connected by the first connector 113
It connects, the end of two seal rubber pieces 103 accordingly contacts.The port of seal rubber piece 103 is obliquely installed, two inclined ends
Contact under the action of the first connector 113 is overlapped, and avoids 103 gauffer of seal rubber piece, dislocation.
In the present embodiment, the first snap ring 110 is arranged in outside vertically set production casing 101, in the present embodiment
In, the port tilt angle of seal rubber piece 103 is 30 °, in other words, the end of 103 port of seal rubber piece and seal rubber
The length direction angle of piece 103 is 30 °, and seal rubber piece 103 is most not easy gauffer dislocation under the angle.In other embodiments
In, the port tilt angle of seal rubber piece 103 may be other, for example, 25 °, 40 ° etc..
In the other embodiments of the utility model, seal rubber piece 103 may be set to be other shapes, for example, setting
The seal rubber piece 103 for being placed in 111 inner wall of the first curved portion extends to outside the first curved portion 111 in 111 end face of the first curved portion
Wall；The seal rubber piece 103 for being set to 112 inner wall of the second curved portion extends to the second curved portion in 112 end face of the second curved portion
112 outer walls.
In other words, the length of seal rubber piece 103 is greater than the arc length of 112 inside of the first curved portion 111 or the second curved portion,
Seal rubber piece 103 extends to the first curved portion 111 or the second arc on the inside of the first curved portion 111 or the second curved portion 112
112 outside of portion, seal rubber piece 103 cover the end face of the first curved portion 111 or the second curved portion 112.
After first connector 113 connects the first curved portion 111 and the second curved portion 112, the first curved portion 111 of covering or
The seal rubber piece 103 of the end face of second curved portion 112 is bonded under the action of the first connector 113, is avoided between both
Gap.
From the above, the first connector 113 is bolt, is bolted the first curved portion 111 and the second curved portion 112.?
In the present embodiment, the first curved portion 111 is equipped with connecting hole with the second curved portion 112 and connect for the first connector 113.
In the other embodiments of the utility model, the first curved portion 111 is provided with the pin hole being connected to connecting hole, accordingly
Ground, the first connector 113 are also equipped with and the matched through-hole of pin hole；Correspondingly, the second curved portion 112 is provided with connects with connecting hole
Logical pin hole, correspondingly, the first connector 113 are also equipped with and the matched through-hole of pin hole.
First connector 113 passes through after connecting hole connect with the first curved portion 111, the second curved portion 112, and two pins are distinguished
It is connect across above-mentioned pin hole with the first curved portion 111 or the second curved portion 112.Two pins can also avoid the first connector 113
It is loosened with the first curved portion 111, the second curved portion 112, can be avoided causes under the action of gas pressure the first connector 113 loose
It is dynamic.
Correspondingly, the second connector 123, third connector 133 setting relationship be also referred to the first connector 113,
This embodiment is not repeated.
The major advantage of gas well device for plugging 100 provided by the embodiment of the utility model is:
First snap ring 110 is arranged in outside production casing 101, and the second snap ring 120 is arranged in outside surface pipe 102, third card
Ring 130 fastens the first snap ring 110 and the second snap ring 120, can achieve the effect of leak stopping.
Coal seam gas leakage at the well head doughnut-shaped steel plate of coal bed gas well is repaired, weld job is avoided, from basic
A possibility that Lighting-blast casualty, occurs for upper elimination, reduces the security risk of welding procedure personnel.
Gas well device for plugging 100 is designed for the shaft collar of coal bed gas well, has with strong points, and structure is simple,
It is low in cost.The repairing tool simple installation, quick relative to weld job, the set-up time is short, alleviates the labor of construction personnel
Fatigue resistance improves production efficiency.
The utility model also provides a kind of technical solution: a kind of gas well drilling equipment, gas well drilling equipment include above-mentioned
Gas well device for plugging 100.
Further, gas well drilling equipment further includes production casing 101, doughnut-shaped steel plate and surface pipe 102 etc..
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of gas well device for plugging, which is characterized in that the gas well device for plugging includes:
With matched first snap ring of production casing, first snap ring includes the first curved portion being detachably connected, the second arc
Portion, first curved portion are connect with second curved portion by the first connector；
With matched second snap ring of surface pipe, second snap ring includes the third curved portion being detachably connected, the 4th arc
Portion, the third curved portion are connect with the 4th curved portion by the second connector；
The third snap ring being sheathed on outside first snap ring and second snap ring, the third snap ring includes being detachably connected
5th curved portion, the 6th curved portion, the 5th curved portion are connect with the 6th curved portion by third connector.
2. gas well device for plugging according to claim 1, which is characterized in that the third snap ring is provided with greasing hole, institute
Greasing hole is stated through the third snap ring and the gap area between first snap ring, second snap ring.
3. gas well device for plugging according to claim 2, which is characterized in that be provided with check valve in the greasing hole.
4. gas well device for plugging according to claim 1, which is characterized in that first curved portion, second arc
Portion, the third curved portion, the 4th curved portion inner wall are respectively connected with seal rubber piece.
5. gas well device for plugging according to claim 4, which is characterized in that be set to the institute of the first curved portion inner wall
The end for stating seal rubber piece is obliquely installed along first direction, is set to the seal rubber piece of the second curved portion inner wall
End be obliquely installed in a second direction, the first direction and the second direction are reversed.
6. gas well device for plugging according to claim 4, which is characterized in that be set to the institute of the first curved portion inner wall
It states seal rubber piece and extends to the first curved portion outer wall in the first arc end surface；It is described to be set to second arc
The seal rubber piece of shape portion inner wall extends to the second curved portion outer wall in the second arc end surface.
7. gas well device for plugging according to claim 1, which is characterized in that the 5th curved portion, the 6th arc
Portion's inner wall is respectively connected with seal rubber piece.
8. according to the described in any item gas well device for plugging of claim 4-7, which is characterized in that the material of the seal rubber piece
For hydrogenated nitrile-butadiene rubber.
9. gas well device for plugging according to claim 1, which is characterized in that the free end of first curved portion with it is described
The distance between free end of second curved portion is 2-3mm.
10. a kind of gas well drilling equipment, which is characterized in that the gas well drilling equipment includes described in claim any one of 1-9
Gas well device for plugging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821320802.0U CN208534445U (en) | 2018-08-15 | 2018-08-15 | A kind of gas well device for plugging and gas well drilling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821320802.0U CN208534445U (en) | 2018-08-15 | 2018-08-15 | A kind of gas well device for plugging and gas well drilling equipment |
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| Publication Number | Publication Date |
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| CN208534445U true CN208534445U (en) | 2019-02-22 |
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ID=65378278
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| CN201821320802.0U Active CN208534445U (en) | 2018-08-15 | 2018-08-15 | A kind of gas well device for plugging and gas well drilling equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716377A (en) * | 2018-08-15 | 2018-10-30 | 杨福苗 | A kind of gas well device for plugging and gas well drilling equipment |
-
2018
- 2018-08-15 CN CN201821320802.0U patent/CN208534445U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716377A (en) * | 2018-08-15 | 2018-10-30 | 杨福苗 | A kind of gas well device for plugging and gas well drilling equipment |
| CN108716377B (en) * | 2018-08-15 | 2024-04-16 | 杨福苗 | Gas well plugging device and gas well drilling equipment |
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