CN107178336A - A kind of outburst prevention device of packing element - Google Patents
A kind of outburst prevention device of packing element Download PDFInfo
- Publication number
- CN107178336A CN107178336A CN201710412961.7A CN201710412961A CN107178336A CN 107178336 A CN107178336 A CN 107178336A CN 201710412961 A CN201710412961 A CN 201710412961A CN 107178336 A CN107178336 A CN 107178336A
- Authority
- CN
- China
- Prior art keywords
- fan shape
- packing element
- shape baffle
- top board
- prevention device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012856 packing Methods 0.000 title claims abstract description 55
- 230000002265 prevention Effects 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Gasket Seals (AREA)
Abstract
The invention belongs to oil-gas field development technical field, a kind of outburst prevention device of packing element is disclosed, anti-lug structure is provided with；Protrusion-dispelling structure setting has top board and lower platen；Spring is carried between top board and lower platen；There are multiple connecting rods the lower surface of top board by pin-hinges；Multiple connecting rods are arranged in order on the lower surface circumference of top board；The circumferential end surfaces of lower platen have multiple first fan shape baffles and multiple second fan shape baffles by hinge；First fan shape baffle and the second fan shape baffle are spaced；First fan shape baffle and the second fan shape baffle pass through pin-hinges connecting rod.The present invention radially can strut into a full circle with the compression of sealing structure; the annular gap at packing element two ends can effectively be filled up; the phenomenon of shoulder can be avoided producing in the course of the work because of high pressure with protecting packer packing element; improve the bearing capacity and useful working life of packing element; and it is simple in construction; easy to process, cost is relatively low.
Description
Technical field
The invention belongs to oil-gas field development technical field, more particularly to a kind of outburst prevention device of packing element.
Background technology
Packer be it is a kind of be used to seal between tubing string and well and between tubing string and tubing string annular space underground work
Tool, packer is mainly made up of central tube, piston, upper cone, slips, packing element etc., wherein, packing element makes packer more key
Element, plays a part of sealing annular space.In process of production, the operting differential pressure that the top and bottom of packing element are born is a kind of friendship
Varying load, during packer sealing, packing element can further be compressed in the presence of operting differential pressure, so that the glue at packing element two ends
Cylinder shoulder causes packing element shoulder to protrude deformation aggravation, is easily caused packing element shoulder to the inventionannulus flow between Pressure Block and sleeve pipe
Tear, damage because of excessive extrusion, high pressure can not be born by finally directly resulting in the sealing of packing element formation, significantly reduce packer
Sealing property.
In summary, the problem of prior art is present be：
In the prior art, packing element caused by compressed and shoulder protrusion packing element two ends stress concentration so as to causing to tear
Rhegma is bad, causes packing element sealing property to decline and causes packing element deformation failure.
The content of the invention
The problem of existing for prior art, the invention provides a kind of outburst prevention device of packing element.
The present invention is achieved in that a kind of outburst prevention device of packing element, the outburst prevention device of the packing element
It is provided with anti-lug structure；The protrusion-dispelling structure setting has top board and lower platen；Carried between the top board and lower platen
Spring；The top and bottom of the spring are bushed in the groove that top board and lower platen are opened up respectively；Under the top board
End face has multiple connecting rods by pin-hinges；The multiple connecting rod is arranged in order on the lower surface circumference of top board；
The circumferential end surfaces of the lower platen have multiple first fan shape baffles and multiple second fan shape baffles by hinge；
First fan shape baffle and the second fan shape baffle are spaced；
First fan shape baffle and the second fan shape baffle pass through pin-hinges connecting rod.
Further, it is inlaid with limited block on first fan shape baffle.
Further, the second fan shape baffle central angle is 60 °, and central angle is 24 ° outside first fan shape baffle, interior
Edge is 45 °.The design of this angle so that do not have the distance between two plate washers there was only 2-3mm so that baffle plate and packing element connect
Contacting surface product is maximized, and is torn damage beneficial to packing element is reduced, is improved sealing property.It is arranged to other angles, then opening can not
A complete circle is formed, and has interference in opening procedure between adjacent screen or baffle plate and pressing plate.
Further, the square groove interval with holes point that second fan shape baffle and the first fan shape baffle are enclosed along lower platen circumference one
Cloth, the hinge is in square groove with holes；Second fan shape baffle and the first fan shape baffle form a full circle after strutting
Shape.
Further, the inner ring of the top board, lower platen, spring is through there is central tube；The top board, lower platen it is outer
Part don't push is pressed with centrum and hypocentrum；The upper centrum and hypocentrum are slidably socketed on central tube.
Further, the anti-lug structure is two；Sealing structure is extruded between two anti-lug structures；The sealing structure
Including the upper packing element, packing element spacer ring and lower rubber cylinder being sequentially connected, the upper and lower ends of the upper packing element and lower rubber cylinder are respectively set
There is circular cone chamfering.
Advantages of the present invention and good effect are：
(1) annular gap at packing element two ends can be effectively filled up using the present invention, packing element can be avoided worked
The phenomenon of shoulder is produced in journey because of high pressure.
(2) present invention can recover deformation, from without disturbing removing seal for packer process.
(3) present invention can improve the sealability and useful working life of packing element.
Brief description of the drawings
Fig. 1 is the outburst prevention device schematic diagram of packing element provided in an embodiment of the present invention.
Fig. 2 is the structural representation of the contraction state of the outburst prevention device of packing element provided in an embodiment of the present invention.
Fig. 3 is the structural representation of the open mode of the outburst prevention device of packing element provided in an embodiment of the present invention.
In figure, 1, central tube；2nd, upper cone；3rd, spring；4th, connecting rod；5th, the first fan shape baffle；6th, sealing structure；7th, upper pressure
Plate；8th, the second fan shape baffle；9th, lower platen；10th, lower cone；11st, limited block.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The application principle of the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the outburst prevention device of packing element provided in an embodiment of the present invention, is provided with anti-lug structure；It is described
Protrusion-dispelling structure setting has top board 7 and lower platen 9；Spring 3 is carried between the top board 7 and lower platen 9；The spring 3
Top and bottom be bushed in respectively in the groove that top board 7 and lower platen 9 are opened up；The lower surface of the top board 7 passes through pin
Nail is hinged with multiple connecting rods 4；The multiple connecting rod 4 is arranged in order on the lower surface circumference of top board 7；
The circumferential end surfaces of the lower platen 9 have multiple first fan shape baffles 5 and multiple second fan-shaped gears by hinge
Plate 8；The fan shape baffle 8 of first fan shape baffle 5 and second is spaced；
The fan shape baffle 8 of first fan shape baffle 5 and second passes through pin-hinges connecting rod 4.
The outburst prevention device of packing element provided in an embodiment of the present invention, in addition to central tube 1, upper cone 2, sealing structure
6 and lower cone 10；The upper cone 2, sealing structure 6 and lower cone 10 are sequentially sleeved on central tube 1, and the anti-lug structure is enclosed on
On the packer central tube 1, and one is respectively installed in the upper and lower ends of sealing structure 6.
Top board 7 and lower platen 9 edge is all evenly distributed with 8 square grooves with holes.The center of circle of second fan shape baffle 8
Angle is 60 °, and the outside central angle of the first fan shape baffle 5 is 24 °, and inside edge is to be accepted on 45 °, first fan shape baffle 5
The limited block 11 that the side of sealing structure 6 is conformed with.
The square groove with holes that the fan shape baffle 5 of second fan shape baffle 8 and first is enclosed along the circumference one of lower platen 9 is spaced apart,
And diameter is adapted to after strutting and forms a full circle shape.
Sealing structure 6 includes the upper packing element, packing element spacer ring and the lower rubber cylinder that are sequentially connected, the upper packing element and lower rubber cylinder it is upper
Lower two ends are respectively provided with circular cone chamfering.
Below in conjunction with the accompanying drawings and operation principle the invention will be further described.
As shown in Figures 2 and 3, the outburst prevention device of novel packer packing element provided in an embodiment of the present invention, when packer not
When working, outburst prevention device is not deformed upon into contraction state, spring 3 in initial position, now top board 7 and lower platen 9
Distance is maximum, and connecting rod 4 is close to vertical, so as to drive the second fan shape baffle 8 and the first fan shape baffle 5 to erect；When packer is by applying
Work is required in tripping in sleeve pipe, by the axially loaded compression seal structure 6 of the setting mechanism of packer, its deformation is close to sleeve pipe
On, while outburst prevention device is also by load, the same compression loaded of spring 3, top board 7 and lower platen 9 are close to each other, the company of drive
Bar 4 struts the second fan shape baffle 8 and the first fan shape baffle 5 one full circle shape of formation, the second fan shape baffle 8 and the first fan-shaped gear
The outward flange of plate 5 can close to internal surface of sleeve pipe, the external diameter of full circle be more than on upper packing element, packing element spacer ring and the lower rubber cylinder of sealing structure 6 by
Maximum outside diameter after compressive strain, prevents that shoulder is protruded sealing mechanism 6 because compressed, packing element, packing element spacer ring and lower glue in reduction
Cylinder is torn damage, improves the sealing property of packer sealing structure 6.
After packer completion work, upper lifting pipe post loses after load sealing structure 6 and recovers deformation, and spring 3 is from compression shape
State returns to initial position, and top board 7 and lower platen 9 are located remotely from each other, and drivening rod 4 packs up the second fan shape baffle 8 and the first fan
Shape baffle plate 5, the second fan shape baffle 8 encases the first fan shape baffle 5 and erected again, from without disturbing removing seal for packer process.
The outburst prevention device is made using steel alloy or non-ferrous metal or engineering plastics.
The setting of second fan shape baffle 8 and the central angle angle of the first fan shape baffle 5, make its opening can be formed one it is complete
Circle, and interference is had in opening procedure between adjacent screen or baffle plate and pressing plate so that do not have the distance between two plate washers only
2-3mm, maximizes the second fan shape baffle 8, the first fan shape baffle 5 and the contact area of sealing structure, beneficial to reduction gluing
Cylinder, packing element spacer ring and lower rubber cylinder are torn damage, improve sealing property.
Top board 7 is connected with upper cone 2, and its external diameter should be consistent with upper cone bottom external diameter, and internal diameter is enclosed on central tube 1,
Internal diameter is consistent with central tube；Lower platen 9 connects with sealing mechanism 6, the packing element maximum outside diameter one that its external diameter should be with sealing structure 6
Cause, internal diameter is enclosed on central tube 1, and internal diameter is consistent with central tube 1.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (6)
1. a kind of outburst prevention device of packing element, it is characterised in that the outburst prevention device of the packing element is provided with protrusion-dispelling
Structure；The protrusion-dispelling structure setting has top board and lower platen；Spring is carried between the top board and lower platen；The bullet
The top and bottom of spring are bushed in the groove that top board and lower platen are opened up respectively；The lower surface of the top board passes through pin
It is hinged with multiple connecting rods；The multiple connecting rod is arranged in order on the lower surface circumference of top board；
The circumferential end surfaces of the lower platen have multiple first fan shape baffles and multiple second fan shape baffles by hinge；It is described
First fan shape baffle and the second fan shape baffle are spaced；
First fan shape baffle and the second fan shape baffle pass through pin-hinges connecting rod.
2. the outburst prevention device of packing element as claimed in claim 1, it is characterised in that inlayed on first fan shape baffle
Limited location block.
3. the outburst prevention device of packing element as claimed in claim 1, it is characterised in that the second fan shape baffle central angle
For 60 °, central angle is 24 ° outside first fan shape baffle, and inside edge is 45 °.
4. the outburst prevention device of packing element as claimed in claim 1, it is characterised in that second fan shape baffle and first
The square groove with holes that fan shape baffle is enclosed along lower platen circumference one is spaced apart, and the hinge is in square groove with holes；Described second
Fan shape baffle and the first fan shape baffle form a full circle shape after strutting.
5. the outburst prevention device of packing element as claimed in claim 1, it is characterised in that the top board, lower platen, spring
Inner ring through there is central tube；The top board, the outer portion don't push of lower platen are pressed with centrum and hypocentrum；The upper centrum
It is slidably socketed with hypocentrum on central tube.
6. the outburst prevention device of packing element as claimed in claim 1, it is characterised in that the anti-lug structure is two；Two
Sealing structure is extruded between individual anti-lug structure；The sealing structure includes upper packing element, packing element spacer ring and the lower glue being sequentially connected
Cylinder, the upper and lower ends of the upper packing element and lower rubber cylinder are respectively provided with circular cone chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710412961.7A CN107178336A (en) | 2017-06-05 | 2017-06-05 | A kind of outburst prevention device of packing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710412961.7A CN107178336A (en) | 2017-06-05 | 2017-06-05 | A kind of outburst prevention device of packing element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107178336A true CN107178336A (en) | 2017-09-19 |
Family
ID=59835163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710412961.7A Pending CN107178336A (en) | 2017-06-05 | 2017-06-05 | A kind of outburst prevention device of packing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107178336A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179991A (en) * | 2017-12-18 | 2018-06-19 | 中国石油天然气股份有限公司 | Bridge plug capable of being salvaged after fracturing |
| CN109538156A (en) * | 2018-12-20 | 2019-03-29 | 中国石油集团川庆钻探工程有限公司 | Design method of packer rubber cylinder for oil testing |
| CN113123755A (en) * | 2021-05-10 | 2021-07-16 | 盐城市崇达石化机械有限公司 | Double-acting packer for oil well pipeline |
| CN113513287A (en) * | 2021-09-14 | 2021-10-19 | 东营光年石油科技有限公司 | Negative pressure setting packer |
| CN113565464A (en) * | 2021-09-27 | 2021-10-29 | 东营市金旺石油机械制造有限公司 | Adjustable packer for oil well pipeline for oil exploitation |
| CN116446820A (en) * | 2023-04-27 | 2023-07-18 | 盐城市弘通石油机械有限公司 | Tail pipe top packer |
| CN118462097A (en) * | 2024-07-15 | 2024-08-09 | 成都托克密封件有限责任公司 | Underground packing tool |
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| GB190703252A (en) * | 1907-02-09 | 1908-01-30 | Alfred Julius Boult | Improvements in or relating to Phonographs and other Sound-producing Machines. |
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2017
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179991A (en) * | 2017-12-18 | 2018-06-19 | 中国石油天然气股份有限公司 | Bridge plug capable of being salvaged after fracturing |
| CN108179991B (en) * | 2017-12-18 | 2020-08-07 | 中国石油天然气股份有限公司 | Bridge plug capable of being salvaged after fracturing |
| CN109538156A (en) * | 2018-12-20 | 2019-03-29 | 中国石油集团川庆钻探工程有限公司 | Design method of packer rubber cylinder for oil testing |
| CN109538156B (en) * | 2018-12-20 | 2021-02-05 | 中国石油集团川庆钻探工程有限公司 | Design method of packer rubber cylinder for oil testing |
| CN113123755A (en) * | 2021-05-10 | 2021-07-16 | 盐城市崇达石化机械有限公司 | Double-acting packer for oil well pipeline |
| CN113513287A (en) * | 2021-09-14 | 2021-10-19 | 东营光年石油科技有限公司 | Negative pressure setting packer |
| CN113513287B (en) * | 2021-09-14 | 2021-12-24 | 东营光年石油科技有限公司 | Negative pressure setting packer |
| CN113565464A (en) * | 2021-09-27 | 2021-10-29 | 东营市金旺石油机械制造有限公司 | Adjustable packer for oil well pipeline for oil exploitation |
| CN116446820A (en) * | 2023-04-27 | 2023-07-18 | 盐城市弘通石油机械有限公司 | Tail pipe top packer |
| CN116446820B (en) * | 2023-04-27 | 2023-10-31 | 盐城市弘通石油机械有限公司 | Tail pipe top packer |
| CN118462097A (en) * | 2024-07-15 | 2024-08-09 | 成都托克密封件有限责任公司 | Underground packing tool |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170919 |
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| RJ01 | Rejection of invention patent application after publication |