CN209457914U - A kind of back-washable self-test sealing packer of oilfield exploitation - Google Patents
A kind of back-washable self-test sealing packer of oilfield exploitation Download PDFInfo
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- CN209457914U CN209457914U CN201822037629.XU CN201822037629U CN209457914U CN 209457914 U CN209457914 U CN 209457914U CN 201822037629 U CN201822037629 U CN 201822037629U CN 209457914 U CN209457914 U CN 209457914U
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- tube
- center tube
- packing element
- liquid storage
- storage chamber
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Abstract
The utility model discloses a kind of back-washable self-test sealing packers of oilfield exploitation, including the top connection pipe axially concatenated from top to bottom, backwash set, first packing element assembly, second packing element assembly, lock sleeve, first piston set, second piston set and lower contact pipe, it is connected between the bottom end and lower contact pipe of the second piston set by the first shear pin, central tube is set at the center of the packer, central tube includes upper center tube and lower center tube, wherein, the upper end of upper center tube is connect with top connection pipe screw thread, lower end and the upper end of lower center tube are socketed, the lower end of lower center tube is connect with the lower contact pipe screw thread；The back-washable self-test sealing packer of the utility model oilfield exploitation meets high flow rate washover, remove the pollution of foul layer over the ground in pit shaft in time in process of production to oil-water well, it improves development effectiveness and substantially reduces the various risks in operation process because packer has washing well function.
Description
Technical field
The utility model relates to a kind of oilfield exploitation tools, use more particularly, to a kind of layering of oil field multilayer back-washable
Self-test sealing packer.
Background technique
Oil field at home is mainly adopted using layering open at present, mainly insulated using packer in separate zone production,
Lower layer position, achievees the purpose that separate zone production.Ready-made cooking technique has Y341, Y541, Y241, Y221, tests the packers such as envelope certainly, although
Their performances, function respectively have feature, and Y341, Y541, Y241, Y221 packer can be carried out backwash function, but they are more again
It in grade use process, to ensure packer sealing performance, requires down dedicated seal-checking instrument device and carries out testing envelope test jobs, test envelope and survey
During studying industry, easily generation Ka Jing, the accidents such as de- of breaking, test jobs large labor intensity, operating cost height.Part well is because of technique
Special envelope test jobs of testing can not carry out；Although self-test sealing packer solves the problems, such as itself to test envelope, but can not carry out anti-flushing well work
Skill requirement.Therefore above-mentioned various packers deposit different degrees of be restricted in practical applications.
Therefore, it is necessary on the basis of existing technology, designs a kind of reasonable in design, that is, has backwashing wells function
Can, but also with the function of testing envelope certainly, meet the needs of oil field layered exploitation.
Utility model content
Purpose of utility model: purpose of the utility model is to solve the deficiencies in the prior art, provide a kind of structure conjunction
Reason, that is, have backwashing wells function, but also with the function of testing envelope certainly.Convenient and reliable operation, reduce labor intensity, reduce operation at
This, efficient back-washable self-test sealing packer.
Technical solution: in order to achieve the goal above, technical solution adopted in the utility model are as follows:
A kind of back-washable self-test sealing packer of oilfield exploitation, comprising: the top connection pipe that axially concatenates from top to bottom, anti-
Set, the first packing element assembly, the second packing element assembly, lock sleeve, first piston set, second piston set and lower contact pipe are washed, it is described
It is connected between the bottom end and lower contact pipe of second piston set by the first shear pin, central tube is set at the center of the packer,
It is characterized in that central tube includes upper center tube and lower center tube, wherein
The upper end of upper center tube is connect with top connection pipe screw thread, the upper end socket of lower end and lower center tube, lower center tube
Lower end is connect with the lower contact pipe screw thread；
The upper center tube, first piston set and lower center tube three form first annular liquid storage chamber after being tightly connected；
First fuel feed hole, is arranged on the tube wall of upper center tube, is connected with the first annular liquid storage chamber；
The lower center tube, second piston set and lower contact pipe three form the second annular liquid storage chamber after being tightly connected；
Second fuel feed hole, is arranged on the tube wall of lower center tube, is connected with the described second annular liquid storage chamber；
One exterior central tube is arranged between the upper center tube and two gum cover assemblies, exterior central tube and the upper center
There is third annular liquid storage chamber between pipe；
The top connection pipe, backwash set and the first packing element assembly three form fourth annular liquid storage chamber after being tightly connected,
A backwash piston is equipped in fourth annular liquid storage chamber；
The backwash casing wall is equipped with cleaning solution inlet opening；
The tube wall of the lock sleeve is equipped with cleaning solution fluid hole；
The cleaning solution inlet opening, fourth annular liquid storage chamber, third annular liquid storage chamber and cleaning solution fluid hole, which are formed, to be used
In the backwash channel of well-flushing；
The middle part of the central tube and exterior central tube is equipped with interconnecting piece, and interconnecting piece is equipped with explosive valve.
The packing element assembly includes: two rubber tube seats and the packing element that is connected between two rubber tube seats.
Packing element shoulder protector is equipped between the both ends and rubber tube seat of the packing element.
Retaining ring is equipped between the upper center tube and lock sleeve, the lock sleeve mutually interlocks after contacting with the retaining ring
Tightly.
External screw thread connection locking ring seat in the middle part of the upper center tube, locks installation locking ring in ring seat, and locking ring seat is upper
One support ring is connected with by the second shear pin in the lower part of retaining ring, support ring is for limiting retaining ring.
The upper end of the backwash set is connect by third shear pin with top connection pipe, the lower end of backwash set and the glue of the first packing element
It is threadedly coupled between cylinder base.
The utility model has the advantages that the back-washable self-test sealing packer of oilfield exploitation provided by the utility model is compared to the prior art
It has the advantage that
The back-washable self-test sealing packer of oilfield exploitation described in the utility model, structurally reasonable, convenient and reliable operation,
Meet high flow rate washover.The pollution for removing foul layer over the ground in pit shaft in time in process of production to oil-water well improves exploitation effect
Fruit.During workover treatment, because packer has washing well function, the various risks in operation process are substantially reduced.
The back-washable self-test sealing packer simplifies compared with the packers such as the prior art Y341, Y541, Y241, Y221
Job execution program greatly reduces down the job execution risk of dedicated seal-checking instrument device, reduces labor intensity, reduce operation at
This.And two groups of compression type glue barrels more effectively realize that interlayer separates.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of back-washable self-test sealing packer provided by the utility model.
Wherein, 1, top connection pipe；2. third shear pin；(3,12,29,30,33) sealing ring；6. cleaning solution inlet opening；4.
Upper center tube；5. backwash set；7. backwash piston；8. pressure cap；9.T type circle；10. retaining ring；The first rubber tube seat of (11,15)；Outside 13.
Central tube；14. spacer ring；16. explosive valve；17. clamp nut；The second rubber tube seat of (18,22)；19. packing element shoulder protector；20. side glue
Cylinder；Packing element in 21.；23. locking ring seat；24. retaining ring；25. support ring；26. the second shear pin；27. lock sleeve；28. first is living
Plug sleeve；29. first annular liquid storage chamber；30. the second annular liquid storage chamber；31. lower center tube；32. second piston set；34. lower contact
Pipe；35. the first shear pin；36. anticollision ring；37. the first fuel feed hole；38. the second fuel feed hole；39. fourth annular liquid storage chamber；40. the
Three annular liquid storage chambers；41. cleaning solution fluid hole；
Fig. 2 is upper center tube and exterior central tube combined connecting structure schematic diagram in the utility model；
Fig. 3 is the side view of Fig. 2.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the utility model is furtherd elucidate, it should be understood that these embodiments are only used for
Illustrate the utility model rather than limitation the scope of the utility model, after having read the utility model, art technology
Personnel fall within the application range as defined in the appended claims to the modification of the various equivalent forms of the utility model.
As shown in Figure 1, a kind of back-washable self-test sealing packer of oilfield exploitation, comprising: axially concatenate from top to bottom
Top connection pipe 1, backwash cover the 5, first packing element assembly, the second packing element assembly, lock sleeve 27, first piston and cover 28, second piston set
32 and lower contact pipe 34, it is connected between the bottom end and lower contact pipe 34 of the second piston set 32 by the first shear pin 35, institute
Setting central tube at the center of packer is stated, central tube includes upper center tube 4 and lower center tube 31, wherein
The upper end of upper center tube 4 is threadedly coupled with top connection pipe 1, and the upper end of lower end and lower center tube 4 is socketed, lower center tube
31 lower end is threadedly coupled with the lower contact pipe 34；
The upper center tube 4, first piston set 28 and 31 three of lower center tube form first annular storage after being tightly connected
Sap cavity 29；
First fuel feed hole 37, is arranged on the tube wall of upper center tube 4, is connected with the first annular liquid storage chamber 29；
The lower center tube 31, second piston set 32 and 34 three of lower contact pipe form the second annular storage after being tightly connected
Sap cavity 30；
Second fuel feed hole 38, is arranged on the tube wall of lower center tube 31, is connected with the described second annular liquid storage chamber 30；
One exterior central tube 13, be arranged between the upper center tube 4 and two gum cover assemblies, exterior central tube 13 and it is described on
There is third annular liquid storage chamber 40 between central tube 4；
The top connection pipe 1, backwash set 5 and the first packing element assembly three form fourth annular liquid storage chamber after being tightly connected
39, fourth annular liquid storage chamber 39 is interior to be equipped with a backwash piston 7；
The backwash covers 5 tube walls and is equipped with cleaning solution inlet opening 6；
The tube wall of the lock sleeve 27 is equipped with cleaning solution fluid hole 41；
The cleaning solution inlet opening 6, fourth annular liquid storage chamber 39, third annular liquid storage chamber 40 and cleaning solution fluid hole 41
Form the backwash channel for being used for well-flushing；
The middle part of the upper center tube and exterior central tube is equipped with interconnecting piece, and interconnecting piece is equipped with explosive valve 16.
As a preferred embodiment of technical solutions of the utility model, the packing element assembly include: two rubber tube seats with
And it is connected to the packing element between two rubber tube seats.
As a preferred embodiment of technical solutions of the utility model, it is equipped between the both ends and rubber tube seat of the packing element
Packing element shoulder protector 19.
As a preferred embodiment of technical solutions of the utility model, set between the upper center tube 4 and lock sleeve 27
It is mutually locked after thering is retaining ring 24, the lock sleeve 27 to contact with the retaining ring 24.
As a preferred embodiment of technical solutions of the utility model, 4 middle part external screw thread of the upper center tube connection lock
Tight ring seat 23, locks installation locking ring 24 in ring seat 23, and the locking upper lower part in retaining ring of ring seat is connected by the second shear pin 26
It is connected to a support ring 25, support ring 25 is for limiting retaining ring 24.
As a preferred embodiment of technical solutions of the utility model, the upper end of backwash set by third shear pin with
It is fixedly connected between top connection pipe, is threadedly coupled between the lower end and the rubber tube seat of the first packing element of backwash set.
A kind of back-washable self-test sealing packer of oilfield exploitation of the utility model tests encapsulation method certainly, adds into central tube
Pressure, hydraulic oil enter first annular liquid storage chamber through first fuel feed hole, enter the second annular liquid storage through second fuel feed hole
Chamber, when pressure reaches certain value, first shear pin is destroyed, under the pressure of hydraulic oil, second piston set, first piston
Set, lock sleeve sequence are moved axially upwards along central tube, and the first packing element assembly of final extruding and the second packing element assembly expand
Deformation insulates the annular oil cavity between packer and sleeve after two packing element expansions, at this point, phase between lock sleeve and retaining ring
Contact is locked；After packer setting, continue to improve oil pressure, the explosive valve in high hydraulic lower generation explosion, by exterior central tube and
The tube wall of upper center tube destroys, and the pressure fluid between the first packing element assembly and the second packing element assembly outer wall is externally entering center
It in pipe, carries out testing envelope, if the pressure suppressed in oil pipe does not reduce, it was demonstrated that packing element is set completely；If beaten in oil pipe
The pressure reduction of pressure, it was demonstrated that packing element is set not exclusively.
The back-washing method of the back-washable self-test sealing packer of oilfield exploitation described in the utility model is, when needing well-flushing
When, cleaning solution is inculcated in annular space between phase casing and oil pipe, and since packer is by casing off, cleaning solution is from clear
Washing lotion inlet opening enters fourth annular liquid storage chamber and pushes up the backwash piston upwards, after backwash piston moves up, cleaning solution into
Enter third annular liquid storage chamber, be in contact and lock with retaining ring since lock sleeve has moved up under the action of oil pressure, at this point, lock
Cleaning solution fluid hole on fixed is just connected with the lower end of the third annular liquid storage chamber, and cleaning solution can pass through cleaning solution
The internal surface of sleeve pipe below packer is cleaned in fluid hole discharge.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (6)
1. a kind of back-washable self-test sealing packer of oilfield exploitation characterized by comprising what is axially concatenated from top to bottom is upper
Junction block, backwash set, the first packing element assembly, the second packing element assembly, lock sleeve, first piston set, second piston set and under connect
Head tube is connected by the first shear pin between the bottom end and lower contact pipe of the second piston set, is set at the center of the packer
Central tube is set, it is characterized in that, central tube includes upper center tube and lower center tube, wherein
The upper end of upper center tube is connect with top connection pipe screw thread, the upper end socket of lower end and lower center tube, the lower end of lower center tube
It is connect with the lower contact pipe screw thread；
The upper center tube, first piston set and lower center tube three form first annular liquid storage chamber after being tightly connected；
First fuel feed hole, is arranged on the tube wall of upper center tube, is connected with the first annular liquid storage chamber；
The lower center tube, second piston set and lower contact pipe three form the second annular liquid storage chamber after being tightly connected；
Second fuel feed hole, is arranged on the tube wall of lower center tube, is connected with the described second annular liquid storage chamber；
One exterior central tube is arranged between the upper center tube and two gum cover assemblies, exterior central tube and the upper center tube it
Between have third annular liquid storage chamber；
Formation fourth annular liquid storage chamber after the top connection pipe, backwash set and the first packing element assembly three are tightly connected, the 4th
A backwash piston is equipped in annular liquid storage chamber；
The backwash casing wall is equipped with cleaning solution inlet opening；
The tube wall of the lock sleeve is equipped with cleaning solution fluid hole；
The cleaning solution inlet opening, fourth annular liquid storage chamber, third annular liquid storage chamber and cleaning solution fluid hole are formed for washing
The backwash channel of well；
The middle part of the central tube and exterior central tube is equipped with interconnecting piece, and interconnecting piece is equipped with explosive valve.
2. the back-washable self-test sealing packer of oilfield exploitation according to claim 1, which is characterized in that the packing element is total
At the packing element for including: two rubber tube seats and being connected between two rubber tube seats.
3. the back-washable self-test sealing packer of oilfield exploitation according to claim 2, which is characterized in that the packing element
Packing element shoulder protector is equipped between both ends and rubber tube seat.
4. the back-washable self-test sealing packer of oilfield exploitation according to claim 1, which is characterized in that the upper center
Retaining ring is equipped between pipe and lock sleeve, the lock sleeve is mutually locked after contacting with the retaining ring.
5. the back-washable self-test sealing packer of oilfield exploitation according to claim 4, which is characterized in that the upper center
External screw thread connection locking ring seat in the middle part of pipe, locks installation locking ring in ring seat, and the locking upper lower part in retaining ring of ring seat passes through
Second shear pin is connected with a support ring, and support ring is for limiting retaining ring.
6. the back-washable self-test sealing packer of oilfield exploitation according to claim 2, which is characterized in that the backwash set
Upper end connect with top connection pipe by third shear pin, be threadedly coupled between the lower end that backwash covers and the rubber tube seat of the first packing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822037629.XU CN209457914U (en) | 2018-12-06 | 2018-12-06 | A kind of back-washable self-test sealing packer of oilfield exploitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822037629.XU CN209457914U (en) | 2018-12-06 | 2018-12-06 | A kind of back-washable self-test sealing packer of oilfield exploitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209457914U true CN209457914U (en) | 2019-10-01 |
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ID=68038899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822037629.XU Expired - Fee Related CN209457914U (en) | 2018-12-06 | 2018-12-06 | A kind of back-washable self-test sealing packer of oilfield exploitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209457914U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441397A (en) * | 2018-12-06 | 2019-03-08 | 盐城市森鑫石油机械有限公司 | The back-washable self-test sealing packer of oilfield exploitation and its envelope, anti-flushing well method are tested certainly |
-
2018
- 2018-12-06 CN CN201822037629.XU patent/CN209457914U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441397A (en) * | 2018-12-06 | 2019-03-08 | 盐城市森鑫石油机械有限公司 | The back-washable self-test sealing packer of oilfield exploitation and its envelope, anti-flushing well method are tested certainly |
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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: 20191001 Termination date: 20211206 |