CN208473754U - Tubing plug and tubing string - Google Patents
Tubing plug and tubing string Download PDFInfo
- Publication number
- CN208473754U CN208473754U CN201820788416.8U CN201820788416U CN208473754U CN 208473754 U CN208473754 U CN 208473754U CN 201820788416 U CN201820788416 U CN 201820788416U CN 208473754 U CN208473754 U CN 208473754U
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- China
- Prior art keywords
- opening
- shell
- tubing plug
- upper housing
- tubing
- Prior art date
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- 230000007246 mechanism Effects 0.000 claims abstract description 98
- 238000007789 sealing Methods 0.000 claims description 25
- 239000003921 oil Substances 0.000 abstract description 45
- 239000010779 crude oil Substances 0.000 abstract description 24
- 239000003129 oil well Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 description 9
- 230000009471 action Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
Abstract
The utility model discloses an oil pipe blanking plug and tubular column, it relates to oil well operation field among the oil recovery engineering, and the oil pipe blanking plug includes: the pipe body mechanism at least comprises an outer pipe, and a clamping part is arranged in the outer pipe; a blocking mechanism that can be thrown into the outer tube, the blocking mechanism comprising: the shell is internally provided with a hollow flow channel, and the side wall of the shell is provided with a first opening and a second opening which are respectively communicated with the flow channel; a seal disposed on the housing sidewall, the seal being positioned between the first opening and the second opening; the opening mechanism is arranged on the shell and can be opened along the radial direction of the shell so as to be clamped into the clamping part; and the opening and closing mechanism is arranged in the flow passage and can enable the flow passage to be communicated from the first opening to the second opening. This application can prevent to play tubular column in-process crude oil through oil pipe blowout, takes place blowout accident out of control, and the interior crude oil accumulation of oil pipe can let out the pit shaft when certain height in the operation in-process simultaneously.
Description
Technical field
The utility model relates to oil well operation field in petroleum production engineering, in particular to a kind of tubing plug and tubing string.
Background technique
During daily oil well operation, the blowout prevention of oil sets annular space mainly utilizes wellhead blowout preventor, that is, is occurring
It can use preventer when blowout and carry out blowout prevention processing, and the oil pipe in tubing string can only be urgent into place with the plug valve of installation connection
Processing.
But uncontrollable state is lost at oil pipe during playing lower tubular column, and installed additional and revolved by manual operation in gusher
Casualty accident easily occurs for plug valve, while can inevitably cause certain environmental pollution, this brings a large amount of to postorder processing
Workload.
Utility model content
In order to overcome the drawbacks described above of the prior art, the technical problem to be solved is that provide for the utility model embodiment
A kind of tubing plug and tubing string, can prevent crude oil during lower tubular column from spraying through oil pipe, and blowout out of control accident occurs,
It can be leaked into pit shaft automatically when the crude oil in operation process in oil pipe runs up to certain altitude simultaneously.
The specific technical solution of the utility model embodiment is:
A kind of tubing plug, the tubing plug include:
Tube body mechanism, the tube body mechanism include at least outer tube, have holding section in the outer tube；
The blockage mechanism in the outer tube can be put into, the blockage mechanism includes: shell, during affiliated interior of shell has
Empty runner, the side wall of the shell have the first opening and the second opening being connected respectively with the runner；Setting is in institute
The sealing element on side wall of outer shell is stated, the sealing element is located between first opening and second opening；It is arranged described
Stretching mechanism on shell, the stretching mechanism can be opened along the radial direction of shell, to be caught in the holding section；Setting
Switching mechanism in the runner, the switching mechanism can make the runner be open from described first to second opening
Conducting.
In a preferred embodiment, the holding section is annular groove.
In a preferred embodiment, the shell includes upper housing and the lower case that is connected with upper housing, institute
It states and forms the runner between upper housing and the lower case, first opening is located on the upper housing, and described second opens
Mouth is located in the lower case.
In a preferred embodiment, the upper end of the upper housing has salvaging portion.
In a preferred embodiment, the lower end of the upper housing has external screw thread, and the lower end of the lower case has
There is internal screw thread, the external screw thread of the upper housing lower end is connected with the internal screw thread of the lower case, and the sealing element is arranged in institute
It states outside the external screw thread of upper housing, the upper surface of the lower case resists the sealing element, and the upper end of the sealing element is provided with pad
Ring.
In a preferred embodiment, the lower end of the upper housing has ball seat, and the switching mechanism includes under
The ball cover that shell is mutually fixed offers through hole on the ball cover；The valve ball that can be offseted with the ball seat；It is arranged in the valve ball
Spring between the ball cover.
In a preferred embodiment, the inner wall of the upper housing lower end has chamfering to form the ball seat.
In a preferred embodiment, the lower end of the lower case is in cone-shaped.
In a preferred embodiment, there are two notches being symmetrical set on the side wall of the shell, it is described
Stretching mechanism includes two opening parts by axis connection, and two opening parts can stretch out respectively from the notch, two institutes
State the elastic component for opening and being provided with control opening degree between part.
In a preferred embodiment, the opening part can be caught in the holding section when opening, so that described
Blockage mechanism can not upward sliding.
A kind of tubing string, the tubing string include any of the above-described tubing plug；It is connected to the tubing plug
Bleeder below outer tube.
The technical solution of the utility model have it is following significant the utility model has the advantages that
In use, the tube body mechanism of tubing plug in the application is connected to the top of bleeder, the two is matched
It closes and uses.When needing lift pipe string during oil well operation lift pipe string, then band press liquid is squeezed into from well head or use other way
So that the bleeder of the tube body mechanism lower part of tubing plug is opened, to be let out using the crude oil inside oil pipe by bleeder
Outside oil pipe, eventually fall into pit shaft.The blockage mechanism of tubing plug is put into inside well head at this time, and is squeezed into from well head
Pressure fluid, pressure acts on other components in sealing element and blockage mechanism, due to the throttling action of blockage mechanism, so that stifled
The pressure lower part that plug mechanism top is subject to wants high, and blockage mechanism moves down under the action of this pressure difference at this time.At this point,
Opening mechanism is only in close contact with oil pipe since the effect of oil pipe is in contraction state.When stretching mechanism moves to the card of outer tube
When conjunction portion, i.e., design position is moved at this time, stretching mechanism opening fastens with holding section, so that blockage mechanism can not be transported upwards
It is dynamic.When blowout occurs, crude oil is upwards through spray upwards, oil sets annular space blowout preventer inside oil sets annular space and oil pipe
Device control, and due to the effect of blockage mechanism inside oil pipe, crude oil acts on sealing element and switching mechanism, due to opening/closing machine
Structure can only make the runner be open from described first to the second opening conducting, therefore crude oil can not continue up,
In this way, just having controlled blowout inside oil pipe.Meanwhile crude oil runs up to certain hydraulic height inside oil pipe during operation
When, the pressure of crude oil can make switching mechanism that the runner is open from described first to the second opening conducting, crude oil
It is flow to below blockage mechanism by the first opening by runner, switching mechanism, the second opening, most Zhongdao so reaches into pit shaft
The purpose of draining is arrived.
Referring to following description and accompanying drawings, the particular implementation of the utility model is disclosed in detail, specifies practical
Novel principle can be in a manner of adopted.It should be understood that the embodiments of the present invention in range not thus by
Limitation.In the range of the spirit and terms of appended claims, the embodiments of the present invention includes many changes, modifications
With it is equivalent.The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.
Detailed description of the invention
Attached drawing described here is only used for task of explanation, and is not intended to limit in any way disclosed by the utility model
Range.In addition, shape and proportional sizes of each component in figure etc. are only schematically, to be used to help the reason to the utility model
Solution is not the specific shape and proportional sizes for limiting each component of the utility model.Those skilled in the art is practical new at this
Under the introduction of type, various possible shapes and proportional sizes can be selected to implement the utility model as the case may be.
Fig. 1 is the structural schematic diagram of tubing plug in the utility model embodiment；
Fig. 2 is the structural schematic diagram of the tube body mechanism of tubing plug in the utility model embodiment；
Fig. 3 is the structural schematic diagram of the blockage mechanism of tubing plug in the utility model embodiment.
The appended drawing reference of the figures above:
1, outer tube；11, holding section；2, shell；21, upper housing；211, salvaging portion；22, lower case；23, runner；24,
One opening；25, the second opening；26, notch；3, sealing element；4, stretching mechanism；41, part is opened；42, elastic component；43, axis；5, it opens
Close mechanism；51, ball cover；52, valve ball；53, spring；6, gasket ring；7, ball seat；8, top connection.
Specific embodiment
In conjunction with the description of attached drawing and specific embodiment of the present invention, the utility model can be clearly understood
Details.But specific embodiment of the present utility model described herein, it is only used for explaining the purpose of this utility model, without
It can be understood as being limitations of the present invention in any way.Under the introduction of the utility model, technical staff is contemplated that
Any possible deformation based on the utility model, these are regarded as belonging to the scope of the utility model.It needs to illustrate
It is that when element is referred to as " being set to " another element, it can directly on the other element or there may also be placed in the middle
Element.When an element is considered as " connection " another element, it can be directly to another element or can
Centering elements can be existed simultaneously.Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or
Electrical connection, the connection being also possible to inside two elements can be directly connected, can also indirectly connected through an intermediary,
For the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.Made herein
Term " vertical ", " horizontal ", "upper", "lower", "left", "right" and similar statement simply to illustrate that mesh
, it is not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more
Any and all combinations of relevant listed item.
In order to prevent during lower tubular column crude oil to spray through oil pipe, blowout out of control accident, while operation occurs
Crude oil in journey in oil pipe can leak into pit shaft automatically when running up to certain altitude, and it is stifled to propose a kind of oil pipe in this application
Device is filled in, Fig. 1 is the structural schematic diagram of tubing plug in the utility model embodiment, and Fig. 2 is oil in the utility model embodiment
The structural schematic diagram of the tube body mechanism of blockage device, Fig. 3 are the blockage mechanism of tubing plug in the utility model embodiment
Structural schematic diagram, as shown in Figure 1 to Figure 3, the tubing plug may include: tube body mechanism, and the tube body mechanism is at least wrapped
Outer tube 1 is included, there is holding section 11 in the outer tube 1；The blockage mechanism in the outer tube 1, the blockage mechanism packet can be put into
Include: shell 2 has hollow runner 23 inside affiliated shell 2, the side wall of affiliated shell 2 have respectively with 23 phase of runner
First opening 24 of connection and the second opening 25；Sealing element 3 on 2 side wall of shell is set, and the sealing element 3 is located at institute
It states between the first opening 24 and second opening 25；Stretching mechanism 4 on the shell 2,4 energy of stretching mechanism are set
Enough radial directions along shell 2 are opened, to be caught in the holding section 11；Switching mechanism 5 in the runner 23, institute are set
Stating switching mechanism 5 can make the runner 23 be connected from first opening 24 to second opening 25.
In use, the tube body mechanism of tubing plug in the application is connected to the top of bleeder, the two is matched
It closes and uses.When needing lift pipe string during oil well operation lift pipe string, then band press liquid is squeezed into from well head or use other way
So that the bleeder of the tube body mechanism lower part of tubing plug is opened, to be let out using the crude oil inside oil pipe by bleeder
Outside oil pipe, eventually fall into pit shaft.The blockage mechanism of tubing plug is put into inside well head at this time, and is squeezed into from well head
Pressure fluid, pressure acts on other components in sealing element 3 and blockage mechanism, due to the throttling action of blockage mechanism, so that
The pressure lower part that blockage mechanism top is subject to wants high, and blockage mechanism moves down under the action of this pressure difference at this time.At this point,
Stretching mechanism 4 is only in close contact with oil pipe since the effect of oil pipe is in contraction state.When stretching mechanism 4 moves to outer tube 1
Holding section 11 when, i.e., move to design position at this time, the opening of stretching mechanism 4 fastens with holding section 11, so that blockage mechanism
It can not move upwards.When blowout occurs, crude oil is upwards through spray upwards, oil sets annular space inside oil sets annular space and oil pipe
It is controlled with wellhead blowout preventor, and due to the effect of blockage mechanism inside oil pipe, crude oil acts on sealing element 3 and switching mechanism 5
On, it is former since switching mechanism 5 can only make the runner 23 from first opening 24 to 25 conducting of the second opening
Oil can not continue up, in this way, just having controlled blowout inside oil pipe.Meanwhile it is former inside oil pipe during operation
When oil runs up to certain hydraulic height, the pressure of crude oil can make switching mechanism 5 that the runner 23 is open by described first
24 to 25 conducting of the second opening, and crude oil is flow to by the first opening 24 by runner 23, the opening of switching mechanism 5, second 25 stifled
It fills in below mechanism, most Zhongdao has so achieved the purpose that draining into pit shaft.
In order to be better understood by the tubing plug in the application, it will be further explained and will be illustrated below.
As shown in Fig. 2, the tubing plug includes: tube body mechanism；The blockage mechanism in the outer tube 1 can be put into.Wherein, described
Tube body mechanism includes at least outer tube 1, has holding section 11 in the outer tube 1, which is used for and in blockage mechanism
Opening mechanism 4 fastens under open configuration, so that blockage mechanism is prevented to move up under the action of crude oil in blowout, thus
Achieve the purpose that control well.In a kind of feasible embodiment, the holding section 11 is annular groove, since annular groove has
Step, therefore step can be resisted after the opening of stretching mechanism 4, so that blockage mechanism can not move up.
The lower section of tube body mechanism middle external tube 1 can connect bleeder, reconnect corresponding other components, so that being formed has
The tubing string of certain function.The top and bottom of outer tube 1 can be machined with external screw thread, in order to be convenient for the upper end of outer tube 1
It is connected with oil pipe, tube body mechanism can also include top connection 8, and the top and bottom of top connection 8 are machined with internal screw thread, to make
The lower end for obtaining top connection 8 can be connected with outer tube 1, and the upper end of top connection 8 can be connected with other oil pipes.
As shown in figures 1 and 3, the blockage mechanism may include: shell 2, have hollow runner inside affiliated shell 2
23；Sealing element 3 on 2 side wall of shell is set；Stretching mechanism 4 on the shell 2 is set and is arranged described
Switching mechanism 5 in runner 23.Wherein, due to needing to form hollow runner 23 in shell 2, for the ease of processing and assembling,
In a kind of feasible embodiment, the shell 2 may include upper housing 21 and the lower case being connected with upper housing 21 22,
The runner 23 is formed between the upper housing 21 and the lower case 22.The lower end of the upper housing 21 has external screw thread, institute
The lower end for stating lower case 22 has internal screw thread, and the external screw thread of 21 lower end of upper housing is connected with the internal screw thread of the lower case 22
It connects.The side wall of the shell 2 have be connected respectively with the runner 23 first opening 24 and second opening 25, described first
Opening 24 can be located on the upper housing 21, and second opening 25 can be located in the lower case 22, and circulation can lead to
It crosses the first opening 24 to enter in runner 23, then passes through switching mechanism 5, then flow out from the second opening 25.
As shown in Figure 1, sealing element 3 between shell 2 and oil pipe for closing.In a kind of feasible embodiment
In, the sealing element 3 can be set outside the external screw thread of the upper housing 21, and the upper surface of the lower case 22 resists described close
The upper end of sealing 3, the sealing element 3 is provided with gasket ring 6.By the upper surface of gasket ring 6 and lower case 22 can to sealing element 3 into
Row is effectively fixed.Sealing element 3 can use the form of leather cup, and the direction along the second opening 25 extends, and so can effectively hinder
Only crude oil breaks through sealing element 3.
As shown in Figure 1, the upper end of the upper housing 21 can have salvaging portion 211.After in blockage mechanism investment tubing string,
If blockage mechanism goes wrong, has not been able to smoothly be snapped down at outer tube 1 under the action of pressure fluid, then fishing tool can be used
Blockage mechanism is salvaged, pulls it from tubing string out.The lower end of the lower case 22 can be in cone-shaped, so can be so as to
In downslide of the blockage mechanism in tubing string, prevent from blocking.
As shown in figures 1 and 3, in a kind of feasible embodiment, the lower end of the upper housing 21 has ball seat 7, institute
Stating switching mechanism 5 includes the ball cover 51 fixed with 22 phase of lower case, offers through hole on the ball cover 51；It can be with the ball seat
7 valve balls 52 to offset；Spring 53 of the valve ball 52 between the ball cover 51 is set.It is former inside oil pipe during operation
When oil runs up to certain hydraulic height, the pressure of crude oil is acted on valve ball 52, the lower pressing spring 53 of valve ball 52, so that spring
53 shrink, and valve ball 52 moves down, so that ball seat 7 is detached from, at this point, the runner 23 is open by switching mechanism 5 by described first
24 to 25 conducting of the second opening, crude oil by the first opening 24 by runner 23, by ball cover 51 through hole, second open
Mouth 25 is flow to below blockage mechanism, and most Zhongdao has so achieved the purpose that draining into pit shaft.In other feasible embodiment party
In formula, the inner wall of 21 lower end of upper housing has chamfering to form the ball seat 7.
Crude oil above blockage mechanism in tubing string is leaked into pit shaft in order to realize, it can also be on ground by squeezing into flushing fluid
It is handled, in this way, can realize draining purpose in the case where crude oil is not up to hydraulic height.
As shown in figures 1 and 3, there is two notches 26 being symmetrical set, the opening machine on the side wall of the shell 2
Structure 4 may include the two opening parts 41 connected by axis 43, which extends along the diametrical direction of shell 2, open 41 energy of part
Being opened or being shunk in the radial direction in shell 2, two opening parts 41 can stretch out respectively from the notch 26, and two
It is described to open the elastic component 42 that control opening degree is provided between part 41.Elastic component 42 can use spring 53, support respectively
The firmly inside of two opening parts 41, opening has limiting section on part 41, limiting section can resist the inner wall of shell 2, to limit
The opening degree for opening part 41 prevents it from opening transition.Under the action of elastic component 42, oil pipe can be resisted by opening part 41, when
When stretching mechanism 4 is lowered into 11 position of holding section of outer tube 1, under the action of elastic component 42, opens part 41 and further open,
It opens part 41 and is caught in holding section 11, so just complete the fixation of blockage mechanism.
It also proposed a kind of tubing string in this application, which may include the oil pipe blocking as described in power is any of the above-described
Device；It is connected to the bleeder of 1 lower section of outer tube of the tubing plug.
Tubing plug and tubing string in the application can reach the function of oil pipe blowout during oil well lift pipe string, from
And guarantee to be in controllable state in operation process inside oil pipe, it is difficult that the application not will increase any operation during application
Degree, is conducive to promote and apply.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.Describing combined term " substantially by ... constitute " should include identified element, ingredient, component or step and reality
Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or
" comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component
Or the embodiment that step is constituted.Here by using term " can with ", it is intended to illustrate that " can with " includes described any
Attribute is all optional.Multiple element, ingredient, component or step can be mentioned by single integrated component, ingredient, component or step
For.Alternatively, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation
Suddenly.For describe the open "a" or "an" of element, ingredient, component or step do not say in order to exclude other elements, at
Point, component or step.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.Above-described embodiment is only
Illustrate the technical ideas and features of the present invention, it is practical new its object is to allow person skilled in the art that can understand this
The content of type is simultaneously implemented accordingly, does not limit the protection scope of the present invention.It is all real according to the spirit of the present invention
Equivalent change or modification made by matter, should be covered within the scope of the utility model.
Claims (11)
1. a kind of tubing plug, which is characterized in that the tubing plug includes:
Tube body mechanism, the tube body mechanism include at least outer tube, have holding section in the outer tube；
The blockage mechanism in the outer tube can be put into, the blockage mechanism includes: shell, and affiliated interior of shell has hollow
Runner, the side wall of the shell have the first opening and the second opening being connected respectively with the runner；Setting is described outer
Sealing element on shell side wall, the sealing element are located between first opening and second opening；It is arranged in the shell
On stretching mechanism, the stretching mechanism can be opened along the radial direction of shell, to be caught in the holding section；Setting is in institute
State the switching mechanism in runner, the switching mechanism can the runner be open from described first to lead to second opening
It is logical.
2. tubing plug according to claim 1, which is characterized in that the holding section is annular groove.
3. tubing plug according to claim 1, which is characterized in that the shell include upper housing and with upper housing phase
The lower case of connection, forms the runner between the upper housing and the lower case, first opening is located at the upper casing
On body, second opening is located in the lower case.
4. tubing plug according to claim 3, which is characterized in that the upper end of the upper housing has salvaging portion.
5. tubing plug according to claim 3, which is characterized in that the lower end of the upper housing has external screw thread, institute
The lower end for stating lower case has internal screw thread, and the external screw thread of the upper housing lower end is connected with the internal screw thread of the lower case, institute
It states sealing element to be arranged in outside the external screw thread of the upper housing, the upper surface of the lower case resists the sealing element, the sealing
The upper end of part is provided with gasket ring.
6. tubing plug according to claim 3, which is characterized in that the lower end of the upper housing has ball seat, described
Switching mechanism includes the ball cover mutually fixed with lower case, offers through hole on the ball cover；The valve that can be offseted with the ball seat
Ball；Spring of the valve ball between the ball cover is set.
7. tubing plug according to claim 6, which is characterized in that the inner wall of the upper housing lower end have chamfering with
Form the ball seat.
8. tubing plug according to claim 3, which is characterized in that the lower end of the lower case is in cone-shaped.
9. tubing plug according to claim 1, which is characterized in that have on the side wall of the shell and be symmetrical set
Two notches, the stretching mechanism includes two opening parts by axis connection, and two opening parts respectively can be from described
Notch stretches out, and the elastic component of control opening degree is provided between two opening parts.
10. tubing plug according to claim 9, which is characterized in that the opening part can be caught in institute when opening
Holding section is stated, so that the blockage mechanism can not upward sliding.
11. a kind of tubing string, which is characterized in that the tubing string includes the tubing plug as described in any in claims 1 to 10；
The bleeder being connected to below the outer tube of the tubing plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820788416.8U CN208473754U (en) | 2018-05-25 | 2018-05-25 | Tubing plug and tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820788416.8U CN208473754U (en) | 2018-05-25 | 2018-05-25 | Tubing plug and tubing string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208473754U true CN208473754U (en) | 2019-02-05 |
Family
ID=65218590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820788416.8U Active CN208473754U (en) | 2018-05-25 | 2018-05-25 | Tubing plug and tubing string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208473754U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2018
- 2018-05-25 CN CN201820788416.8U patent/CN208473754U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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