CN206016757U - Blanking plug - Google Patents
Blanking plug Download PDFInfo
- Publication number
- CN206016757U CN206016757U CN201620974830.9U CN201620974830U CN206016757U CN 206016757 U CN206016757 U CN 206016757U CN 201620974830 U CN201620974830 U CN 201620974830U CN 206016757 U CN206016757 U CN 206016757U
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- Prior art keywords
- setting
- blanking plug
- piston
- valve
- slide
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- 230000007246 mechanism Effects 0.000 claims abstract description 147
- 230000000903 blocking effect Effects 0.000 claims abstract description 39
- 238000011010 flushing procedure Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims description 26
- 238000012856 packing Methods 0.000 claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 abstract description 14
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 241000191291 Abies alba Species 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 239000012224 working solution Substances 0.000 description 6
- 239000000837 restrainer Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 244000147058 Derris elliptica Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses a blanking plug belongs to well workover technical field. The blanking plug comprises: the device comprises a blocking cylinder mechanism, a seat sealing mechanism, a slide valve mechanism and a limiting mechanism; the blocking cylinder mechanism is connected with the seat sealing mechanism, the sliding valve mechanism is connected with the limiting mechanism, the limiting mechanism is connected with the blocking cylinder mechanism, the sliding valve mechanism is located inside the limiting mechanism, and the sliding valve mechanism and the limiting mechanism are located at the lower end of the seat sealing mechanism. The utility model discloses a pressure energy that the jam jar mechanism in the blanking plug provided external equipment turns into mechanical energy, compression seat seals the mechanism, and seat seals the mechanism under the effect that blocks up jar mechanism and stop gear, seals christmas tree tubing hanger, establishes circulation well-flushing passageway through slide valve mechanism, has solved the Christmas tree tubing hanger and has not sealed, can't circulate the problem of well-flushing.
Description
Technical field
This utility model is related to workover treatment technical field, more particularly to a kind of blanking plug.
Background technology
Workover treatment is the important means for keeping oil, gas and water well normally to produce in oilfield development process.In workover treatment
In, generally require well-flushing.
At present, during Oil, Water, Gas well workover treatment, generally require to be circulated well-flushing, and circulation well cleanup is usually
After working solution is injected into well by production tree oil pipe, working solution is in production tree oil pipe internal circulation flow.
Due to general blow-by at production tree tubing hanger, when can cause to circulate, working solution is directly from production tree tubing hanger
Place overflows, and causes working solution circulation short circuit, causes circulation well cleanup operation not reach assignment requirement.Therefore, in order in well-flushing
When set up annular seal space in production tree oil pipe, allow working solution to be recycled to well head through production tree oil pipe, need a kind of sealing to set
Standby production tree tubing hanger is sealed.
Utility model content
In order to solve problem of the prior art, this utility model embodiment provides a kind of blanking plug.The technical scheme
As follows：
A kind of blanking plug is provided, the blanking plug includes：Blocking cylinder mechanism, setting mechanism, slide-valve gear and position restrainer
Structure；
The blocking cylinder mechanism is connected with the setting mechanism, and the blocking cylinder mechanism is used for, in well-flushing, outside being set
The standby pressure energy for providing is converted into mechanical energy, and the mechanical energy that the setting mechanism is used for providing by the blocking cylinder mechanism is carried out
Setting, to seal to production tree tubing hanger；
The slide-valve gear is connected with the position-limit mechanism, and the position-limit mechanism is connected with the blocking cylinder mechanism, described
Slide-valve gear is located inside the position-limit mechanism, and the slide-valve gear and the position-limit mechanism are located under the setting mechanism
End, the one end described in the blanking plug residing for blocking cylinder mechanism are upper end, and the one end residing for the position-limit mechanism is lower end,
The position-limit mechanism is used for the position for limiting the setting mechanism, and the slide-valve gear is used for opening the blanking plug and production tree
Passage between oil pipe is setting up circulation well cleanup passage.
Alternatively, the blocking cylinder mechanism includes：Stroke cylinder, push piston, telescoping tube, cylinder pressure, setting piston, central canal
With piston snap；
The piston that pushes is connected with one end of the telescoping tube, and is inserted in the stroke cylinder；
The other end of the telescoping tube is connected with one end of the central canal, one end of the central canal also with the cylinder pressure
Connection, and be connected by setting shear pin between the setting piston, the setting piston is also connected with the piston snap,
The other end of the central canal is connected with the position-limit mechanism, with by the stroke cylinder, the piston, described flexible of pushing
The annular seal space constituted by pipe, the cylinder pressure, the setting piston, the central canal, the slide-valve gear and the position-limit mechanism,
The pressure energy that external equipment is provided is converted into mechanical energy.
Alternatively, the setting mechanism includes：At least two packing elements, at least one pressure ring and pressure cap；
At least two packing element, at least one pressure ring and the pressure cap are sequentially arranged at the blocking cylinder mechanism
On, and at least one pressure ring is between the adjacent packing element of any two at least two packing element, the pressure cap position
In the lower end of at least two packing element, under the cooperation of the pressure ring and the pressure cap, to compress institute by the setting piston
State packing element, and the expansion after being compressed by the packing element carry out setting.
Alternatively, the slide-valve gear includes：Guiding valve, valve pocket, steel ball and guiding valve snap；
The steel ball is placed in the valve pocket, and the valve pocket is connected with the guiding valve, the guiding valve snap respectively, the valve
Set is connected with the position-limit mechanism also by guiding valve shear pin.
Alternatively, the position-limit mechanism includes：Stop collar and deck；
One end of the stop collar is connected with the other end of the central canal, and the lower end in contact with the setting mechanism,
To limit the position of the setting mechanism；
The other end of the stop collar is connected with the deck, and the stop collar is also by guiding valve shear pin and the guiding valve machine
Structure connects.
Alternatively, the blanking plug also includes well head joint；
One end of the well head joint is connected with the lower end of the stroke cylinder, and the well head joint is same with the stroke cylinder
Axle, for connecting the blanking plug and the production tree oil pipe.
The beneficial effect brought of technical scheme that this utility model embodiment is provided is：
In this utility model embodiment, by blanking plug in blocking cylinder mechanism pressure energy turn that external equipment is provided
Turn to mechanical energy, compression mount sealing mechanism, setting mechanism in the presence of blocking cylinder mechanism and position-limit mechanism, to production tree tubing hanger
Sealed, circulation well cleanup passage is set up by slide-valve gear, solved production tree tubing hanger blow-by, it is impossible to be circulated and wash
The problem of well.
Description of the drawings
For the technical scheme being illustrated more clearly that in this utility model embodiment, below will be to needed for embodiment description
Accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is a kind of schematic diagram of blanking plug that one illustrative examples of this utility model are provided；
Fig. 2 is a kind of schematic diagram of blocking cylinder mechanism that one illustrative examples of this utility model are provided；
Fig. 3 is the schematic diagram of a kind of setting mechanism that one illustrative examples of this utility model are provided；
Fig. 4 is a kind of schematic diagram of slide-valve gear that one illustrative examples of this utility model are provided；
Fig. 5 is a kind of schematic diagram of position-limit mechanism that one illustrative examples of this utility model are provided；
Fig. 6 is the shape of slide-valve gear when another kind of blanking plug passage that one illustrative examples of this utility model are provided is opened
State schematic diagram；
Fig. 7 is the schematic diagram of another kind of blanking plug that one illustrative examples of this utility model are provided.
Wherein, to accompanying drawing in each label declaration as follows：
1 blocking cylinder mechanism, 11 stroke cylinders, 12 push piston, 13 telescoping tubes, 14 cylinder pressures, 15 setting pistons, 16 central canals,
17 piston snaps, 2 setting mechanisms, 21 packing elements, 22 pressure rings, 23 pressure caps, 3, slide-valve gear, 31 guiding valves, 32 valve pockets, 33 steel balls, 34
Guiding valve snap, 4 position-limit mechanisms, 41 stop collars, 42 decks, 5 well head joints.
Specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, new to this practicality below in conjunction with accompanying drawing
Type embodiment is described in further detail.
Fig. 1 is a kind of schematic diagram of the blanking plug according to an exemplary embodiment, as shown in figure 1, blanking plug includes：
Blocking cylinder mechanism 1, setting mechanism 2, slide-valve gear 3 and position-limit mechanism 4；
Blocking cylinder mechanism 1 is connected with setting mechanism 2, and blocking cylinder mechanism 1 is used for the pressure in well-flushing, external equipment being provided
Power can be converted into mechanical energy, and setting mechanism 2 is setting for being carried out by the mechanical energy of 1 offer of blocking cylinder mechanism, with to production tree
Tubing hanger is sealed；
Slide-valve gear 3 is connected with position-limit mechanism 4, and position-limit mechanism 4 is connected with blocking cylinder mechanism 1, and slide-valve gear 3 is located at spacing
Inside mechanism 4, and slide-valve gear 3 and position-limit mechanism 4 are located at the lower end of setting mechanism 2, in blanking plug residing for blocking cylinder mechanism 1
One end be upper end, the one end residing for position-limit mechanism 4 is lower end, and position-limit mechanism 4 is used for limiting the position of setting mechanism, guiding valve machine
Structure 3 sets up circulation well cleanup passage for opening the passage between blanking plug and production tree oil pipe.
In this utility model embodiment, by blanking plug in blocking cylinder mechanism pressure energy turn that external equipment is provided
Turn to mechanical energy, compression mount sealing mechanism, setting mechanism in the presence of blocking cylinder mechanism and position-limit mechanism, to production tree tubing hanger
Sealed, circulation well cleanup passage is set up by slide-valve gear, solved production tree tubing hanger blow-by, it is impossible to be circulated and wash
The problem of well.
Wherein, setting mechanism 2 is enclosed within blocking cylinder mechanism 1, is positioned by position-limit mechanism 4, and slide-valve gear 3 is placed in spacing
In mechanism 4, it is threaded connection, and squeezes into shear pin and fix, position-limit mechanism 4 is threaded connection with blocking cylinder mechanism 1, and is squeezed into
Pin is fixed.
Illustratively, when the blanking plug that this utility model embodiment is provided works, external equipment pressurizes to blanking plug inner chamber, blocks up
The pressure energy that external equipment is provided is converted into mechanical energy by plug cylinder mechanism 1, compression mount sealing mechanism, completes setting, outside is afterwards set
Standby continuation pressurization, cuts off for connecting the guiding valve shear pin of slide-valve gear 3 and position-limit mechanism 4, and 3 spiral of slide-valve gear is descending, works as cunning
When valve system 3 comes downwards to the bottom of position-limit mechanism 4, slide-valve gear 3 stops descending passage between blanking plug and production tree oil pipe
Open, set up circulation well cleanup passage.
Fig. 2 is a kind of schematic diagram of the blocking cylinder mechanism 1 according to an exemplary embodiment, as shown in Fig. 2 blocking cylinder
Mechanism includes：Stroke cylinder 11, push piston 12, telescoping tube 13, cylinder pressure 14, setting piston 15, central canal 16 and piston snap 17；
One end that piston 12 is pushed with telescoping tube 13 is connected, and is inserted in stroke cylinder 11；
The other end of telescoping tube 13 is connected with one end of central canal 16, and one end of central canal 16 is also connected with cylinder pressure 14, with
And be connected by setting shear pin between setting piston 15, setting piston 15 is also connected with piston snap 17, central canal 16 another
One end is connected with position-limit mechanism, to pass through stroke cylinder 11, push piston 12, telescoping tube 13, cylinder pressure 14, setting piston 15, center
The pressure energy that external equipment is provided is converted into mechanical energy by the annular seal space constituted by pipe 16, slide-valve gear 3 and position-limit mechanism 4.
Wherein, the one end for pushing piston 12 with telescoping tube 13 is threaded connection, and squeezes into pin and fix.Telescoping tube 13
The other end be threaded connection with one end of central canal 16, and squeeze into pin and fix, one end of central canal 16 also with cylinder pressure 14
Connect, connected mode is threaded connection, and squeeze into pin and fix, central canal 16 also connects with setting piston 15, and connected mode is
It is threadedly coupled, connection screw thread is left-handed anti-back screw thread, and squeezes into setting shear pin and fixes.Certainly, in actual applications, block cylinder machine
Parts in structure also have other connected modes, this utility model embodiment to be not especially limited this.
Illustratively, stroke cylinder 11, push piston 12, telescoping tube 13, cylinder pressure 14, setting piston 15, central canal 16, guiding valve machine
The annular seal space that structure 3 and position-limit mechanism 4 are constituted, when external equipment pressurizes to blanking plug, the pressure energy that external equipment is provided turns
Turn to mechanical energy, promote and push piston 12, telescoping tube 13, cylinder pressure 14, setting piston 15, central canal 16, piston snap 17, setting
Mechanism 2, slide-valve gear 3 and position-limit mechanism 4 are descending together, when push piston 12 come downwards to push piston land when, push piston
12nd, under telescoping tube 13, cylinder pressure 14, central canal 16, piston snap 17, setting mechanism 2, slide-valve gear 3 and position-limit mechanism 4 stop
OK, external equipment persistent pressure, the setting shear pin for connecting central canal 16 and setting piston 15 are cut off, under 15 spiral of setting piston
OK, compression mount sealing mechanism 2, is carried out setting.
Fig. 3 is the schematic diagram of a kind of setting mechanism 2 according to an exemplary embodiment, as shown in figure 3, setting mechanism
Including：Packing element 21, pressure ring 22 and pressure cap 23；
Packing element 21, pressure ring 22 and pressure cap 23 are sequentially arranged in blocking cylinder mechanism, and pressure ring 22 is adjacent positioned at any two
Packing element 21 between, pressure cap 23 be located at packing element 21 lower end, under the cooperation of pressure ring 22 and pressure cap 23, to be pressed by setting piston 15
Contracting packing element 21, and the expansion after being compressed by packing element 21 carry out setting.
It should be noted that the mounting means of packing element 21, pressure ring 22 and pressure cap 23 is as shown in figure 1, be inserted in blocking cylinder successively
On central canal 16 in mechanism, and by set piston 15 and position-limit mechanism 4 carry out spacing.The number of the packing element 21 in setting mechanism
Amount at least two, the quantity of pressure ring 22 are at least one, it is preferable that the quantity of the packing element 21 in setting mechanism is three, pressure
The quantity of ring 22 is two.
Illustratively, after setting shear pin is cut off, 15 spiral of setting piston is descending, in pressure ring 22, pressure cap 23 and position-limit mechanism 4
In the presence of, setting piston 15 compresses packing element 21, and packing element 21 is expanded after being compressed, contacted with production tree tube inner wall, to recovering the oil
Tree tubing hanger is sealed, and after the completion of sealing, piston snap 17 works, and setting piston 15 is locked in current location, setting completes.
Fig. 4 is a kind of schematic diagram of the slide-valve gear 3 according to an exemplary embodiment, as shown in figure 4, slide-valve gear
Including：Guiding valve 31, valve pocket 32, steel ball 33 and guiding valve snap 34；
Steel ball 33 is placed in valve pocket 32, and valve pocket 32 is connected with guiding valve 31, guiding valve snap 34 respectively, and valve pocket 32 is gone back and position restrainer
Structure 4 connects.
Wherein, valve pocket 32 and guiding valve 31 are threaded connection, and squeeze into pin and fix, and guiding valve snap 34 is placed on valve pocket 32
On, valve pocket 32 is threaded connection with position-limit mechanism 4, and connection screw thread is left-handed anti-back screw thread, and squeezes into guiding valve shear pin and fix.When
So, in actual applications, the parts in slide-valve gear also have other connected modes, this utility model embodiment not to make this
Concrete restriction.
Fig. 5 is a kind of schematic diagram of the position-limit mechanism according to an exemplary embodiment, as shown in figure 5, position-limit mechanism
Including：Stop collar 41 and deck 42；
One end of stop collar 41 is connected with the other end of central canal 16, and the lower end in contact with setting mechanism 2, to limit seat
The position of sealing mechanism 2；
The other end of stop collar 41 is connected with deck 42, and stop collar 41 is connected with valve pocket 32 also by guiding valve shear pin.
Wherein, one end of stop collar 41 is to be threadedly coupled with the connected mode of the other end of central canal 16, and squeezes into pin
Fixed, the other end of stop collar 41 is to be threadedly coupled with the connected mode of deck 42, and squeezes into shear pin and fix, stop collar 41 and valve
Cover 32 to be threaded connection, connection screw thread is left-handed anti-back screw thread, and squeeze into guiding valve shear pin and fix.Certainly, in actual applications,
Parts in position-limit mechanism 4 also have other connected modes, this utility model embodiment to be not especially limited this.
Illustratively, after the completion of setting, external equipment continues to pressurize blanking plug, is now used for fixing valve pocket 32 and stop collar
41 guiding valve shear pin is cut off, and 4 spiral of slide-valve gear is descending, when the bottom of valve pocket 32 touches the upper surface of deck 42, stops
Descending, guiding valve snap 34 works, and slide-valve gear 3 is locked in current location, as shown in fig. 6, between blanking plug and production tree oil pipe
Passage open.So far, the sealing of production tree tubing hanger and circulation well cleanup Path Setup are completed, during circulation well cleanup, well-flushing working solution
Inject from well head, the stroke cylinder 11, telescoping tube 13, central canal 16 and stop collar 41 in blanking plug, by 41 side of stop collar
Hole on wall enters oil pipe, is circulated well-flushing.
Further, as shown in fig. 7, blanking plug also includes well head joint 5；
One end of well head joint 5 is connected with the lower end of stroke cylinder 11, and well head joint 5 is coaxial with stroke cylinder 11, for even
Connect blanking plug and production tree oil pipe.
Wherein, one end of well head joint 5 is connected for pin with the connected mode of the lower end of stroke cylinder 11, and certainly, reality should
With in, one end of well head joint 5 can also be attached by other connected modes with the lower end of stroke cylinder 11, and this practicality is new
Type embodiment is illustrated by taking pin connection as an example, and this is not specifically limited.
It should be noted that in this utility model embodiment, stroke cylinder 11 and piston 12 is pushed, piston 12 is pushed and is stretched
The draw 13, telescoping tube 13 and well head joint 5, telescoping tube 13 and central canal 16, cylinder pressure 14 and setting piston 15,15 and of setting piston
Junction between central canal 16, central canal 16 and stop collar 41, stop collar 41 and guiding valve 31, guiding valve 31 and valve pocket 32 can be with
Sealing ring is installed, the sealing ring can be sealed to each connecting portion.
In this utility model embodiment, by blanking plug in blocking cylinder mechanism pressure energy turn that external equipment is provided
Turn to mechanical energy, compression mount sealing mechanism, setting mechanism in the presence of blocking cylinder mechanism and position-limit mechanism, to production tree tubing hanger
Sealed, circulation well cleanup passage is set up by slide-valve gear, solved production tree tubing hanger blow-by, it is impossible to be circulated and wash
The problem of well.
Preferred embodiment of the present utility model is the foregoing is only, not in order to limit this utility model, all in this practicality
Within new spirit and principle, any modification, equivalent substitution and improvements that is made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (6)
1. a kind of blanking plug, it is characterised in that the blanking plug includes：Blocking cylinder mechanism, setting mechanism, slide-valve gear and spacing
Mechanism；
The blocking cylinder mechanism is connected with the setting mechanism, and the blocking cylinder mechanism is used for, in well-flushing, external equipment being carried
For pressure energy be converted into mechanical energy, the setting mechanism is used for carrying out seat by the mechanical energy of blocking cylinder mechanism offer
Envelope, to seal to production tree tubing hanger；
The slide-valve gear is connected with the position-limit mechanism, and the position-limit mechanism is connected with the blocking cylinder mechanism, the guiding valve
Mechanism is located inside the position-limit mechanism, and the slide-valve gear and the position-limit mechanism are located at the lower end of the setting mechanism,
One end described in the blanking plug residing for blocking cylinder mechanism is upper end, and the one end residing for the position-limit mechanism is lower end, institute
Position-limit mechanism is stated for limiting the position of the setting mechanism, the slide-valve gear is used for opening the blanking plug with production tree oil
Passage between pipe is setting up circulation well cleanup passage.
2. blanking plug as claimed in claim 1, it is characterised in that the blocking cylinder mechanism includes：Stroke cylinder, push piston,
Telescoping tube, cylinder pressure, setting piston, central canal and piston snap；
The piston that pushes is connected with one end of the telescoping tube, and is inserted in the stroke cylinder；
The other end of the telescoping tube is connected with one end of the central canal, and one end of the central canal is also connected with the cylinder pressure
Connect, and be connected by setting shear pin between the setting piston, the setting piston is also connected with the piston snap, institute
The other end for stating central canal is connected with the position-limit mechanism, with by the stroke cylinder, described push piston, the telescoping tube,
The annular seal space constituted by the cylinder pressure, the setting piston, the central canal, the slide-valve gear and the position-limit mechanism, will
The pressure energy that external equipment is provided is converted into mechanical energy.
3. blanking plug as claimed in claim 1, it is characterised in that the setting mechanism includes：At least two packing elements, at least one
Individual pressure ring and pressure cap；
At least two packing element, at least one pressure ring and the pressure cap are sequentially arranged in the blocking cylinder mechanism, and
At least one pressure ring is located at least two packing element between the adjacent packing element of any two, and the pressure cap is located at described
The lower end of at least two packing elements, under the cooperation of the pressure ring and the pressure cap, to compress the packing element by the setting piston,
And the expansion after being compressed by the packing element carry out setting.
4. blanking plug as claimed in claim 1, it is characterised in that the slide-valve gear includes：Guiding valve, valve pocket, steel ball and cunning
Valve snap；
The steel ball is placed in the valve pocket, and the valve pocket is connected with the guiding valve, the guiding valve snap respectively, and the valve pocket is also
It is connected with the position-limit mechanism by guiding valve shear pin.
5. blanking plug as claimed in claim 1, it is characterised in that the position-limit mechanism includes：Stop collar and deck；
One end of the stop collar is connected with the other end of the central canal, and the lower end in contact with the setting mechanism, to limit
The position of the fixed setting mechanism；
The other end of the stop collar is connected with the deck, and the stop collar is connected with the slide-valve gear also by guiding valve shear pin
Connect.
6. blanking plug as claimed in claim 1, it is characterised in that the blanking plug also includes well head joint；
One end of the well head joint is connected with the lower end of the stroke cylinder, and the well head joint is coaxial with the stroke cylinder,
For connecting the blanking plug and the production tree oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620974830.9U CN206016757U (en) | 2016-08-29 | 2016-08-29 | Blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620974830.9U CN206016757U (en) | 2016-08-29 | 2016-08-29 | Blanking plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206016757U true CN206016757U (en) | 2017-03-15 |
Family
ID=58254685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620974830.9U Active CN206016757U (en) | 2016-08-29 | 2016-08-29 | Blanking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206016757U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107780875A (en) * | 2016-08-29 | 2018-03-09 | 中国石油天然气股份有限公司 | Blanking plug |
| CN114075939A (en) * | 2022-01-07 | 2022-02-22 | 胜利油田北方实业集团有限责任公司 | Oil pipe plug convenient to operation |
-
2016
- 2016-08-29 CN CN201620974830.9U patent/CN206016757U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107780875A (en) * | 2016-08-29 | 2018-03-09 | 中国石油天然气股份有限公司 | Blanking plug |
| CN107780875B (en) * | 2016-08-29 | 2023-09-26 | 中国石油天然气股份有限公司 | Plug device |
| CN114075939A (en) * | 2022-01-07 | 2022-02-22 | 胜利油田北方实业集团有限责任公司 | Oil pipe plug convenient to operation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |