CN207315294U - Washing well double leather cup packer - Google Patents
Washing well double leather cup packer Download PDFInfo
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- CN207315294U CN207315294U CN201721299868.1U CN201721299868U CN207315294U CN 207315294 U CN207315294 U CN 207315294U CN 201721299868 U CN201721299868 U CN 201721299868U CN 207315294 U CN207315294 U CN 207315294U
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- cup packer
- sliding sleeve
- working tube
- outer working
- deflector hole
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Abstract
It the utility model is related to a kind of washing well double leather cup packer.The washable double leather cup packer of the utility model includes top connection, lower contact and it is threaded in, central tube between lower contact, the central tube outer cover is equipped with outer working tube and the annular space formed a seal, cup packer assembly and down cup packing element assembly are fixedly connected with the outer working tube in opposite directions, outer working tube above the upper cup packer assembly is equipped with upper deflector hole, outer working tube below the down cup packing element assembly is equipped with lower deflector hole, on described, the sliding sleeve coordinated with annular space sealing is equipped with annular space between lower deflector hole, the sliding sleeve is connected by shear pin with outer working tube, the length of annular space is not less than sliding sleeve axial length on the downside of the lower deflector hole.The washable double leather cup packer of the utility model possesses well-flushing and tests envelope function while being blocked to casing leakage point.
Description
Technical field
The utility model belongs to oil extraction in oil field technical field, and in particular to a kind of washing well double leather cup packer.
Background technology
Oil well pipe in oil exploitation includes flow string and casing, and flow string includes oil pipe, sucker rod and oil pumping
Pump, well recovery is realized by the way that flow string is lowered into casing.And carry out the frequent undergrounds such as water filling, gas injection due to long-term
Different degrees of breakage occurs in the corrosion of operation, casing material itself and environment to casing, casing.Casing damage can cause
Water content of oil well rises, so as to reduce recovery ratio.In order to ensure the normal production of oil well, it is necessary to the casing of underground breakage into
Row processing.
The casing local damage leakage treatment process of oil field maturation has three kinds at present, the first is change casing, its advantage
It is that can effect a radical cure local damage, but treatment cost is higher, need to spend about 600,000；Second is to carry out casing patching, its advantage is energy
It is enough preferable to administer damaged leakage situation, but there are casing inner diameter while cost is higher to diminish, and is only capable of tripping in small diameter tools
The shortcomings that resuming production；The third is to use the temporary closure of packer, its advantage is that cost is low, but existing packer is difficult same
When possess and well-flushing and test envelope function, there is the shortcomings that scene is poor for applicability.
Utility model content
The purpose of this utility model is to provide a kind of washing well double leather cup packer；It can block casing leakage point
While possess well-flushing and test envelope function.
To achieve the above object, the technical solution of the washing well double leather cup packer of the utility model is：Technical solution 1：
Washing well double leather cup packer includes top connection, lower contact and the central tube being threaded between upper and lower connector, the center
Pipe outer cover is equipped with outer working tube and the annular space formed a seal, and leather cup glue is fixedly connected with opposite directions on the outer working tube
Cylinder assembly and down cup packing element assembly, the outer working tube above the upper cup packer assembly is equipped with upper deflector hole, under described
Outer working tube below cup packer assembly is equipped with lower deflector hole, is equipped with the annular space between the upper and lower deflector hole and ring
The sliding sleeve that sky sealing coordinates, the sliding sleeve are connected by shear pin with outer working tube, and the annular space length on the downside of the lower deflector hole is not
Less than sliding sleeve axial length.
In use, oil pipe is connected with packer and is transferred to 3 ~ 5m of casing leakage overlying regions, to oil pipe and oil
Suppressed in set annular space, since sliding sleeve blocks the annular space between the central tube and outer working tube in packer, down cup packing element
Assembly, which is pressurized, opens support on casing wall, if the oil jacket pressure stability above down cup assembly illustrates that down cup packing element assembly has
Good leakproofness, can continue to transfer packer to oil pipe circulation zone, oil pipe leakage position is placed in upper and lower cup packer total
Between, under strata pressure, upper and lower cup packer assembly is realized self-styled, and after continuing pressurization, sliding sleeve slides, the leakage of lower deflector hole
Go out, well-flushing passage connection.
Technical solution 2, on the basis of technical solution 1：The upper cup packer assembly, down cup packing element assembly are removable
It is connected on outer working tube.If upper and lower cup packer assembly is damaged, be conducive to replace it.
Technical solution 3, on the basis of technical solution 2：The outer working tube has the tubular structure of step, institute for outer wall
State upper and lower cup packer assembly and be set in step both sides, the upper and lower cup packer assembly is distinguished away from the end of step
Equipped with the spacing ring coordinated with its block.Be conducive to make upper and lower cup packer assembly be stabilized on outer working tube.
Technical solution 4, on the basis of technical solution 1：The upper and lower deflector hole is distributed on outer working tube to be circumferential
Circular hole.Circumferentially it is distributed on outer working tube and is conducive to balance outer working tube pressure.
Technical solution 5, on the basis of technical solution 1：The sliding sleeve passes through the sealing ring that is arranged on the inside and outside wall of sliding sleeve
Realize and coordinate with annular space sealing.Be conducive to sliding sleeve and realize sealing with annular space.
Technical solution 6, on the basis of 1 ~ 5 any technical solution of technical solution：The sliding sleeve be located at the lower part of annular space and
Lower deflector hole is completely covered.Be conducive to sliding sleeve to block lower deflector hole.
Technical solution 7, on the basis of technical solution 6：The sealing ring of the sliding sleeve outer wall is two, and under being located at respectively
The upper and lower both sides of deflector hole.Be conducive to prevent the liquid outside lower deflector hole from entering annular space.
Technical solution 8, on the basis of technical solution 6：The shear pin is located on the downside of lower deflector hole.Still can after shear pin fracture
Stay in hole；If shear pin is located on the sliding sleeve above lower deflector hole, after shear pin fracture, under pressure, outside outer working tube
Shear pin can be rushed out, exist injury reservoir risk.
Brief description of the drawings
Fig. 1 is the structure diagram of the embodiment 1 of the washable double leather cup packer of the utility model；
Fig. 2 is the structure diagram of the embodiment 2 of the washable double leather cup packer of the utility model；
Fig. 3 is the structure diagram of the embodiment 3 of the washable double leather cup packer of the utility model；
In attached drawing：1st, top connection；2nd, central tube；3rd, outer working tube；4th, upper limit ring；5th, upper cup packer assembly；6th, under
Cup packer assembly；7th, lower limit ring；8th, sealing ring；9th, sliding sleeve；10th, shear pin；11st, lower contact；12nd, upper deflector hole；13rd, led under
Discharge orifice；14th, sliding sleeve；15th, sealing ring；16th, shear pin.
Embodiment
The embodiment of the utility model is described further below in conjunction with the accompanying drawings.
The specific embodiment 1 of the washable double leather cup packer of the utility model, as shown in Figure 1, a kind of washable double skins
Bowl packer includes top connection 1, lower contact 11 and the central tube 2 being threaded between top connection 1 and lower contact 11, center
2 outer cover of pipe is equipped with outer working tube 3, and central tube 2 forms annular space with outer working tube 3, and annular space is tightly connected with upper and lower connector 11.
Outer working tube 3 in the present embodiment has the tubular structure of step for outer wall, and step is located at the middle part of outer working tube 3, step
Both ends are set with cup packer assembly 5 and down cup packing element assembly 6 in opposite directions, and the top of upper cup packer assembly 5 has to upper
The spacing upper limit ring 4 of cup packer assembly 5, upper limit ring 4 are fixedly connected on outer working tube 3.Down cup packing element assembly 6
Lower part has the lower limit ring 7 spacing to down cup packing element assembly 6, and lower limit ring 7 is fixedly connected on outer working tube 3.The upper limit
There is upper deflector hole 12, upper deflector hole 12 is some circular hole and is circumferentially distributed in outer working tube on the outer working tube 3 of 4 top of position ring
On 3.There is lower deflector hole 13, lower deflector hole 13 is some circular hole and is circumferentially distributed on the outer working tube 3 of the lower section of lower limit ring 7
On outer working tube 3.Annular space lower part between outer working tube 3 and central tube 2 has sliding sleeve 9, and sliding sleeve 9 is mainly used for blocking lower water conservancy diversion
Hole 13.The tubular structure that sliding sleeve 9 in the present embodiment is, inner wall have a ring-shaped groove, two ring-shaped grooves of outer wall, wherein interior
Wall and outer wall upper end ring-shaped groove installation sealing ring 8；Sliding sleeve 9 outer wall, two grooves are distributed in the lower water conservancy diversion of 3 lower end of outer working tube
13 both sides of hole.9 lower part of sliding sleeve has shear pin 10, and shear pin 10 is broken after sliding sleeve 9 is subject to certain pressure, the annular space of the lower section of sliding sleeve 9
Length is snapped down to the length for leaking out lower deflector hole 13 completely more than sliding sleeve 9.
Washing well double leather cup packer in the present embodiment by oil pipe with packer in use, be connected, and by packer
At tripping in casing local damage leak position 3 ~ 5m of top, apply hydraulic pressure to the annular space of oil pipe and casing with pump truck, due to
Sliding sleeve 9 encloses the annular space between central tube 2 and outer working tube 3, while 6 outside diameter of down cup packing element assembly is more than in casing
Footpath, down cup packing element assembly 6 can be realized self-styled and can bear top hydraulic pressure.By suppressing rear pressure stability situation, hypodermis is judged
The leakproofness of bowl packing element assembly 6, it is ensured that the leakproofness of down cup packing element assembly 6.If pressure stability illustrates hypodermis in certain numerical value
Bowl packing element 6 leakproofness of assembly are good, can continue to be lowered into the position of casing leakage by the washing well double leather cup packer of the present embodiment
Put.It is damaged if pressure declines very fast explanation down cup packing element assembly 6 during tripping in, packer should be risen, weight
New configuration down cup packing element assembly 6.If testing sealing lattice, can continue to transfer packer, it is ensured that leak position is located at upper cup packer
Between assembly 5 and down cup packing element assembly 6.Under strata pressure, upper cup packer assembly 5 and down cup packing element assembly 6 is realized
Closure to leak source；Then proceed to be forced into design predetermined pressure, the shear pin 10 of 9 lower end of sliding sleeve is cut, and sliding sleeve 9 comes downwards to down
The downside of deflector hole 13, realizes that the upper deflector hole 12 on packer is connected with lower deflector hole 13, and well-flushing passage is opened.To oil jacket ring
It is aerial to be passed through flushing fluid, flushing fluid by the oil jacket annular space under at the 13 sleeve pipe leakage of upper deflector hole 12 and lower deflector hole,
Flushing fluid is back to ground by oil pipe, realizes well-flushing.
The specific embodiment 2 of the washable double leather cup packer of the utility model, as shown in Fig. 2, in the present embodiment it is upper,
Down cup packing element assembly is bonded on outer working tube, and spacing ring is not provided with above upper cup packer assembly, and down cup packing element is total
Into lower section be also not provided with spacing ring.It is to be not provided with spacing ring on packer to help to mitigate packing using the advantages of this design
The weight of device, but also there is upper and lower cup packer assembly to fix unstable shortcoming.Other are same as Example 1, repeat no more.
The specific embodiment 3 of the washable double leather cup packer of the utility model, as shown in figure 3, the cunning in the present embodiment
Set 14 is located at lower deflector hole top, and sliding sleeve 14 is tubular structure, and inner wall has a ring-shaped groove, two ring-shaped grooves of outer wall, its
Middle inner and outer wall upper end ring-shaped groove installation sealing ring 15, sliding sleeve 14 outer wall, two grooves are distributed in 3 lower end of outer working tube
Lower 13 both sides of deflector hole, 14 lower part of sliding sleeve have shear pin 16.Other are same as Example 1, repeat no more.
Claims (8)
1. washing well double leather cup packer, including top connection, lower contact and the central tube being threaded between upper and lower connector,
The central tube outer cover is equipped with outer working tube and the annular space formed a seal, it is characterised in that：Phase on the outer working tube
To being fixedly connected with upper cup packer assembly and down cup packing element assembly, on the outer working tube above the upper cup packer assembly
Equipped with upper deflector hole, the outer working tube below the down cup packing element assembly is equipped with lower deflector hole, the upper and lower deflector hole it
Between annular space in be equipped with the sliding sleeve coordinated with annular space sealing, the sliding sleeve is connected by shear pin with outer working tube, the lower water conservancy diversion
The length of annular space is not less than sliding sleeve axial length on the downside of hole.
2. washing well double leather cup packer according to claim 1, it is characterised in that：The upper cup packer assembly, under
The equal releasable connection of cup packer assembly is on outer working tube.
3. washing well double leather cup packer according to claim 2, it is characterised in that：The outer working tube has for outer wall
The tubular structure of step, the upper and lower cup packer assembly are set in step both sides, the upper and lower cup packer assembly
The spacing ring coordinated with its block is respectively equipped with away from the end of step.
4. washing well double leather cup packer according to claim 1, it is characterised in that：The upper and lower deflector hole is circumferential
The circular hole being distributed on outer working tube.
5. washing well double leather cup packer according to claim 1, it is characterised in that：The sliding sleeve is by being arranged at sliding sleeve
Sealing ring on inside and outside wall coordinates with annular space sealing.
6. according to claim 1 ~ 5 any one of them washing well double leather cup packer, it is characterised in that：The sliding sleeve is located at ring
Empty lower part and lower deflector hole is completely covered.
7. washing well double leather cup packer according to claim 6, it is characterised in that：The sealing ring of the sliding sleeve outer wall is
Two, and it is located at the upper and lower both sides of lower deflector hole respectively.
8. washing well double leather cup packer according to claim 6, it is characterised in that：The shear pin is located under lower deflector hole
Side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721299868.1U CN207315294U (en) | 2017-10-10 | 2017-10-10 | Washing well double leather cup packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721299868.1U CN207315294U (en) | 2017-10-10 | 2017-10-10 | Washing well double leather cup packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207315294U true CN207315294U (en) | 2018-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721299868.1U Active CN207315294U (en) | 2017-10-10 | 2017-10-10 | Washing well double leather cup packer |
Country Status (1)
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| CN (1) | CN207315294U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837610A (en) * | 2021-02-02 | 2022-08-02 | 中国石油天然气股份有限公司 | Damaged petroleum casing pipe plugging device and method |
-
2017
- 2017-10-10 CN CN201721299868.1U patent/CN207315294U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837610A (en) * | 2021-02-02 | 2022-08-02 | 中国石油天然气股份有限公司 | Damaged petroleum casing pipe plugging device and method |
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