CN208934650U - A kind of dissolvable oil well pipe plug destroyed - Google Patents
A kind of dissolvable oil well pipe plug destroyed Download PDFInfo
- Publication number
- CN208934650U CN208934650U CN201821846526.1U CN201821846526U CN208934650U CN 208934650 U CN208934650 U CN 208934650U CN 201821846526 U CN201821846526 U CN 201821846526U CN 208934650 U CN208934650 U CN 208934650U
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- CN
- China
- Prior art keywords
- outer sleeve
- plug
- cylindrical body
- dissolvable
- oil well
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Abstract
The utility model discloses the dissolvable oil well pipe plugs that one kind can destroy, including outer sleeve and plug centerbody；Plug centerbody is made of the first cylindrical body and the second cylindrical body, two cylindrical bodies are made of dissolvable alloy material, first cylinder diameter is less than the second cylindrical body, the central axes of two cylindrical bodies are on the same line, the top of first cylindrical body opens up pin hole, annular groove is arranged in middle part, installs the first sealing ring made of resolvability rubber in groove；Outer sleeve is set on the first cylindrical body, and against the second periphery, outer sleeve is fixed on plug centerbody close to pin hole by the pin that can be cut by top for the bottom of outer sleeve, and annular groove is arranged in outer sleeve surface, installs the second sealing ring in groove；Outer sleeve is threadedly coupled tubing string box cupling.The plug can avoid tubing string secondary and go out, and destroys plug centerbody in underground and falls into shaft bottom, plug centerbody and down-hole liquid contact lysis become fine particle or paste return and drains into ground.
Description
Technical field
The utility model belongs to technical field of operation under oil well, and in particular to the dissolvable oil well pipe that one kind can destroy
Plug.
Background technique
During petroleum underground work makes a trip, the inner cavity of tubing string is typically open, when tubing string lower part is not sealed
When stifled, the oil gas in pit shaft can be upwardly formed eruption from tubing string inner cavity, and will cause high-altitude sprinkling when making a trip leads to contaminated matter
Therefore or fire incident.Another situation is that when the liquid of tubing string lower part can not be in aerial drainage to pit shaft, in trip-out process in tubing string
Liquid can be come out with the release of solution gas by gaslift, and also will form high-altitude sprinkling when making a trip leads to contamination accident or fire
Accident.Oil gas water eruption sprinkling in tubing string does not have rule that can follow, and easily causes the pollution of construction site, and cause in construction
It is disconnected, it makes troubles to operation, can also cause fire in special circumstances encountering and cause bigger loss.Therefore need to be arranged one just
In the blocking device of manipulation, it is in the oil pipe inner cavity of unobstructed state in the process to block to make a trip, reaches control pollution and thing
Therefore purpose.After conventional oil well plug completes underground work with tubing string lower going-into-well bottom, needs to play out tubing string again, shed plug again
By tubing string lower going-into-well bottom, the fluid communication channel of tubing string Yu oil well shaft bottom is established.
Utility model content
One purpose of the utility model is after solving conventional oil well plug with the completion underground work of tubing string lower going-into-well bottom, to need
Again to play out tubing string, shed plug again by tubing string lower going-into-well bottom the technical issues of.
To achieve the goals above, the utility model provides a kind of dissolvable oil well pipe plug that can be destroyed, packet
Include outer sleeve and plug centerbody.The plug centerbody is made of the second cylindrical body of first cylindrical body on top and lower part,
Two cylindrical bodies are made of dissolvable alloy material, and the first cylinder diameter is less than the second cylindrical body, the central axes of two cylindrical bodies
On the same line, the top of first cylindrical body offers lateral pin hole, and annular groove, peace in groove is arranged in middle part
Fill the first sealing ring made of resolvability rubber；The outer sleeve is set on the first cylindrical body, and outer sleeve inner wall
It is close to the first periphery, against the second periphery, top, will be outer by pin close to pin hole for the bottom of outer sleeve
Sleeve limit is fixed on plug centerbody, and the pin is the pin that can be cut；The outer sleeve surface lower part setting annular
Groove, groove is interior to install the second sealing ring；Outer sleeve connects string collar.
Preferably, the dissolvable alloy material is that magnesium-based can dissolve metal alloy compositions.
Preferably, the plug centerbody is by the first cylindrical body and the second cylinder body by integral forming.
Preferably, first cylindrical body top is equipped with multiple pin holes in same level, sets in pin hole
Set screw thread, pin hole bottom end is towards the center of circle and equidistantly distributed is in emitting shape.
Preferably, the pin has multiple, corresponds with pin hole, which can be cut made of fragile material
Pin.
Preferably, in the middle part of first cylindrical body setting equidistantly distributed five annular grooves, installation the in groove
One sealing ring.
Preferably, second cylinder bottom is set as the hemispherical outwardly protruded.
Preferably, external screw thread is arranged in the outer sleeve surface top, and outer sleeve is threadedly coupled tubing string box cupling.
Preferably, the outer sleeve surface is equipped with two annular grooves, installs the second sealing ring in groove.
Preferably, the outer sleeve is made of steel material.
Compared with prior art, the utility model has the following beneficial effects:
(1) the oil well pipe plug can directly destroy plug centerbody in underground in ground pressure, can be to avoid pipe
Secondary of column go out, and plug centerbody by can dissolve magnesium base alloy material be made, the first sealing ring on plug centerbody by
Resolvability rubber is made, and the plug centerbody and the first sealing ring for falling into shaft bottom are contacted with underground liquid, and plug centerbody is whole
Dissolution becomes fine particle, and soluble type rubber is finally dissolved into paste, then returns and drain into ground.
(2) plug can also be applied to well, oil recovery integrated pipe column, after completion practice, by increasing tubing string
Plug is squeezed into shaft bottom by Fluid pressure, is established circulation passage and is directly started production testing operation.The plug can optimize oil well
Well operations technique can preferably save the time, and cost is improved benefit, and obtain bigger economic benefit.
The further advantage, target and feature of the utility model will be partially reflected by the following instructions, and part will also pass through
Research and practice to the utility model and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the dissolvable oil well pipe plug that can be destroyed, using this figure as abstract of description attached drawing.
Fig. 2 is the structural schematic diagram of plug centerbody.
Sectional view of the plug centerbody along the cross section A-A that Fig. 3 is Fig. 2.
Fig. 4 is the structural schematic diagram of outer sleeve.
Figure label:
Outer sleeve 1, external screw thread 2, the second sealing ring 3, plug centerbody 4, the first cylindrical body 41, the second cylindrical body 42, pin
Nail hole 5, pin 6, the first sealing ring 7, limiting platform 8.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art referring to explanation
Book text can be implemented accordingly.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other elements or combinations thereof.
As shown in Figs 1-4, the utility model provides a kind of dissolvable oil well pipe plug that can be destroyed comprising housing
Cylinder 1 and plug centerbody 4.The plug centerbody is made of the second cylindrical body 42 of first cylindrical body 41 on top and lower part.
It further limits, the plug centerbody is by the first cylindrical body and the second cylinder body by integral forming.Two cylindrical bodies are by dissolvable
Alloy material is made, and preferably dissolvable alloy material is that can dissolve magnesium-base metal alloy material.First cylinder diameter is less than
Second cylindrical body, the central axes of two cylindrical bodies are on the same line.The top of first cylindrical body offers lateral pin
Hole 5.Preferred structure, first cylindrical body top are equipped with multiple pin holes in same level, setting in pin hole
Screw thread, pin hole bottom end is towards the center of circle and equidistantly distributed is in emitting shape.Matching used pin 6 have it is multiple, with pin hole
It corresponds, which is that pin can be cut made of fragile material.Annular groove, peace in groove are set in the middle part of the first cylindrical body
Fill the first sealing ring 7 made of resolvability rubber.Preferred structure, the five of the first cylindrical body middle part setting equidistantly distributed
Annular groove installs the first sealing ring in groove.Second cylinder bottom is set as the hemispherical outwardly protruded.Second cylinder
Body upper surface not is limiting platform 8 by the ring-shaped platform that the first cylindrical body occupies.The outer sleeve is made of steel material, outside
Sleeve is set on the first cylindrical body, and outer sleeve inner wall is close to the first periphery, and the bottom of outer sleeve is against second
Outer sleeve limit is fixed on plug close to pin hole, by the pin 6 that can be cut by the mounting platform of cylindrical body upper surface, top
On centerbody.Annular groove is arranged in the outer sleeve surface lower part, installs the second sealing ring 3 in groove.Preferably, outer sleeve
Surface is equipped with two annular grooves, installs the second sealing ring 3 in groove.External screw thread 2, outer sleeve spiral shell is arranged in outer sleeve surface top
Line connects string collar.
Working principle of the utility model is: outer sleeve and tubing string are threadedly coupled, it is common together with the two seals of outer sleeve
Guarantee the sealing between tubing string and outer sleeve, while being provided with five sealing rings between plug centerbody and outer sleeve and guaranteeing plug center
Sealing between body and outer sleeve, plug overall tightness are secure；It, only need to be by adding to fluid in tubing string after the completion of plug effect
Pressure, the pin on plug centerbody top will occur shearing with outer sleeve and disconnect, and plug centerbody will under the effect of gravity certainly
It is dynamic to move down disengaging tubing string, shaft bottom is fallen into, while tubing string and shaft bottom also form channel；The plug centerbody is can using magnesium-based
Alloy is dissolved, the plug centerbody and the first sealing ring for falling into shaft bottom are contacted with underground liquid, and all dissolution becomes plug centerbody
Fine particle, soluble type rubber is finally dissolved into paste, then returns and drain into ground, will not generate damage to oil-gas Layer.Actual use
In the process, it can adjust in tubing string when pin intensity and pin quantity destroy plug centerbody to set according to actual needs
Pressure.The end cap optimizes operation technique, can preferably save time, cost, obtains bigger economic benefit.
It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above
Listed utilization.It can be applied to various fields suitable for the present invention completely.For those skilled in the art,
Other modifications may be easily implemented.Therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
It is not limited to specific details and legend shown and described herein with novel.
Claims (10)
1. the dissolvable oil well pipe plug that one kind can destroy, which is characterized in that including outer sleeve and plug centerbody；It is described stifled
Head centerbody is made of first cylindrical body on top and the second cylindrical body of lower part, and two cylindrical bodies are by dissolvable alloy material system
At, the first cylinder diameter less than the second cylindrical body, the central axes of two cylindrical bodies on the same line, first cylindrical body
Top offers lateral pin hole, and annular groove is arranged in middle part, and installation is first close made of resolvability rubber in groove
Seal；The outer sleeve is set on the first cylindrical body, and outer sleeve inner wall is close to the first periphery, the bottom of outer sleeve
Outer sleeve limit is fixed on plug centerbody against the second cylindrical body upper surface, top close to pin hole, by pin by portion；
The pin is the pin that can be cut；Annular groove is arranged in the outer sleeve surface lower part, installs the second sealing ring in groove；Outside
Sleeve connection string collar.
2. the dissolvable oil well pipe plug that can be destroyed as described in claim 1, which is characterized in that the dissolvable alloy material
Material is that magnesium-based can dissolve metal alloy compositions.
3. the dissolvable oil well pipe plug that can be destroyed as claimed in claim 2, which is characterized in that the plug centerbody by
First cylindrical body and the second cylinder body by integral forming.
4. the dissolvable oil well pipe plug that can be destroyed as claimed in claim 3, which is characterized in that on first cylindrical body
Portion is equipped with multiple pin holes in same level, screw thread is arranged in pin hole, pin hole bottom end is towards the center of circle and between waiting
It is in emitting shape away from distribution.
5. the dissolvable oil well pipe plug that can be destroyed as claimed in claim 4, which is characterized in that the pin have it is multiple,
It is corresponded with pin hole, which is that pin can be cut made of fragile material.
6. the dissolvable oil well pipe plug that can be destroyed as claimed in claim 5, which is characterized in that in first cylindrical body
Five annular grooves of equidistantly distributed are arranged in portion, install the first sealing ring in groove.
7. the dissolvable oil well pipe plug that can be destroyed as claimed in claim 6, which is characterized in that second cylindrical body bottom
Portion is set as the hemispherical outwardly protruded.
8. the dissolvable oil well pipe plug that can be destroyed as described in claim 1, which is characterized in that in the outer sleeve surface
External screw thread is arranged in portion, and outer sleeve is threadedly coupled tubing string box cupling.
9. the dissolvable oil well pipe plug that can be destroyed as claimed in claim 8, which is characterized in that the outer sleeve surface is set
There are two annular grooves, the second sealing ring is installed in groove.
10. the dissolvable oil well pipe plug that can be destroyed as claimed in claim 9, which is characterized in that the outer sleeve is by steel
Material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821846526.1U CN208934650U (en) | 2018-11-10 | 2018-11-10 | A kind of dissolvable oil well pipe plug destroyed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821846526.1U CN208934650U (en) | 2018-11-10 | 2018-11-10 | A kind of dissolvable oil well pipe plug destroyed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208934650U true CN208934650U (en) | 2019-06-04 |
Family
ID=66727268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821846526.1U Expired - Fee Related CN208934650U (en) | 2018-11-10 | 2018-11-10 | A kind of dissolvable oil well pipe plug destroyed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208934650U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439499A (en) * | 2019-09-05 | 2019-11-12 | 陕西臻易石油技术有限公司 | Inhibition soluble type blanking plug and its minimizing technology suitable for speed column end |
| CN110952949A (en) * | 2019-11-22 | 2020-04-03 | 中国石油天然气股份有限公司 | Soluble plugging tool for tail end of velocity string and using method thereof |
| CN110952963A (en) * | 2019-10-30 | 2020-04-03 | 中国石油化工股份有限公司 | Structure and method for producing tubular column with pressing-down gas lift |
| CN112302572A (en) * | 2020-11-09 | 2021-02-02 | 百勤能源科技（惠州）有限公司 | Soluble pump plug |
-
2018
- 2018-11-10 CN CN201821846526.1U patent/CN208934650U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439499A (en) * | 2019-09-05 | 2019-11-12 | 陕西臻易石油技术有限公司 | Inhibition soluble type blanking plug and its minimizing technology suitable for speed column end |
| CN110952963A (en) * | 2019-10-30 | 2020-04-03 | 中国石油化工股份有限公司 | Structure and method for producing tubular column with pressing-down gas lift |
| CN110952949A (en) * | 2019-11-22 | 2020-04-03 | 中国石油天然气股份有限公司 | Soluble plugging tool for tail end of velocity string and using method thereof |
| CN112302572A (en) * | 2020-11-09 | 2021-02-02 | 百勤能源科技（惠州）有限公司 | Soluble pump plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190604 Termination date: 20191110 |