CN104251127B - Controlled hydraulic formula packer - Google Patents
Controlled hydraulic formula packer Download PDFInfo
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- CN104251127B CN104251127B CN201410468700.3A CN201410468700A CN104251127B CN 104251127 B CN104251127 B CN 104251127B CN 201410468700 A CN201410468700 A CN 201410468700A CN 104251127 B CN104251127 B CN 104251127B
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- sliding sleeve
- central canal
- ratchet
- plunger shaft
- shaped
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Abstract
A kind of controlled hydraulic formula packer, the middle part of its central canal is shaped with setting inlet opening, the expanding formation in lower end plunger shaft, and central canal is built with sliding sleeve, and makes sliding sleeve be fixed in lower contact by shear pin；The upper end of sliding sleeve and basepipe seal, middle part is shaped with in plunger shaft inlet opening under inlet opening and plunger shaft, and lower end is shaped with ratchet, and the lower end of ratchet has reducing, and makes ratchet be positioned in the centre bore of lower contact upper end；The middle part of lower contact is shaped with the diameter concentric steps hole more than its centre bore, and makes ratchet be positioned at the top of stepped hole；Inverted " t " type tubular piston is sleeved on sliding sleeve, and piston head is positioned in plunger shaft, and extension is between central canal and sliding sleeve；Piston head is fixed with sliding sleeve by shear pin, and the lower surface area of piston head is more than its upper surface area.The present invention, by installing piston and sliding sleeve in central canal, controls the setting of packer and deblocking, meets in oil-gas mining operation packer set and the controllability of deblocking action.
Description
Technical field
The present invention relates to a kind of hydraulic packer, be a kind of setting and the hydraulic pressure of deblocking controllable type
Packer.
Background technology
Hydraulic packer is a kind of conventional packer, and the oil gas being widely used in oil gas field is opened
Adopt in operation, its operation principle be packer with oil pipe G.I.H, during packer set,
Suppressing in rail, hydraulic pressure is entered between packing element and central canal by the inlet opening on central canal
Space, under fluid pressure effect, packing element expand, packer set；When oil overpressure
After venting, under packing element resilience force effect, removing seal for packer.
Summary of the invention
Object of the present invention is to provide a kind of controlled hydraulic packer, install in its central canal
There are piston and sliding sleeve, in order to control the setting of packer and deblocking, on-the-spot to meet oil-gas mining
To packer set and the controllability of deblocking action in operation.
The technical solution of the present invention is: a kind of controlled hydraulic formula packer, including lower contact,
Central canal, lower sleeve, expansion packing element, upper bush and top connection, lower contact is connected to central canal
Lower end, top connection is connected to the upper end of central canal, and expansion packing element is by upper bush and lower sleeve
Be sleeved on the middle part of central canal, and the upper end of upper bush be tightly connected with top connection, lower sleeve with
Basepipe seal connects, and the middle part of described central canal is shaped with setting inlet opening, the expanding formation in lower end
Plunger shaft, and central canal is built with sliding sleeve, and make sliding sleeve be fixed on down by sliding sleeve shear pin
On joint；Ring-shaped step and basepipe seal, the middle part system of sliding sleeve are passed through in the upper end of described sliding sleeve
Having in plunger shaft inlet opening under inlet opening and plunger shaft, the lower end of sliding sleeve is shaped with ratchet, and ratchet
Lower end there is reducing, and make ratchet be positioned in the centre bore of lower contact upper end；Described lower contact
Middle part be shaped with diameter more than the concentric steps hole of its centre bore, and make ratchet be positioned at stepped hole
Top；Inverted " t " type tubular piston is made up of piston head and extension and is sleeved on outside sliding sleeve
On wall, described piston head is positioned in plunger shaft, and extension is between central canal and sliding sleeve；Institute
State piston head to be fixed with sliding sleeve by piston shear pin, and the lower surface area of piston head is more than
Its upper surface area, and make in plunger shaft inlet opening under inlet opening and plunger shaft lay respectively at piston
The both sides up and down of head.
Described plunger shaft is the inner bore of step that a lower end is uncovered.
Outside described sliding sleeve and ratchet are integral type structure, and the external diameter of ratchet non-reducing section is with sliding sleeve
Footpath is identical.
The present invention has the following advantages and effect:
1, the present invention is when packer enters well, and it is setting that the ring-shaped step of sliding sleeve upper end is positioned at central canal
The top of inlet opening, in oil pipe, during pressurization, liquid can not enter between central canal and packing element, this
Time packer will not start setting.
2, the present invention is when packer set, only need to put into corresponding steel ball from well head, treat that ball falls
After in entering sliding sleeve lower end ratchet and being caught by ball by reducing, under pressure, steel ball drives
Ratchet is descending, opens the setting inlet opening of central canal, and packer starts setting.
3, the present invention is when packer works, and steel ball band pawl goes downwards in the middle part of lower contact big straight
After in the stepped hole of footpath, ratchet reducing release is flared out, and steel ball is crossed from ratchet, at liquid
Under pressure continuous action, liquid is simultaneously in the plunger shaft of the upper and lower both sides of piston head, due to
The difference in areas of piston head upper and lower end face, under pressure, piston head drives and moves on sliding sleeve, closes
Close setting inlet opening, when, after pressure release in oil pipe, packer keeps setting state.
4, the present invention is when removing seal for packer, only need to put into corresponding steel ball from well head, and steel ball falls
Enter in inclined-plane, sliding sleeve upper end, under pressure, after promoting sliding sleeve to come downwards to piston extreme position,
Opening setting inlet opening and cut off cutting off between piston and sliding sleeve, sliding sleeve is no longer with piston
Upper shifting, when after pressure release in oil pipe, packer unseals naturally.
Accompanying drawing explanation
Fig. 1 is the structural representation of original state of the present invention,
Fig. 2 is the structural representation of the setting state of the present invention,
Fig. 3 is A portion structure for amplifying schematic diagram in Fig. 2.
Detailed description of the invention
1-3 describes a kind of embodiment of the present invention below in conjunction with the accompanying drawings.
A kind of controlled hydraulic formula packer, including lower contact 1, central canal 2, lower sleeve 5,
Expansion packing element 6, upper bush 7 and top connection 8, lower contact 1 is connected to the lower end of central canal 2,
Top connection 8 is connected to the upper end of central canal 2, and expansion packing element 6 is by upper bush 7 and lower sleeve
5 middle parts being sleeved on central canal 2, and the upper end of upper bush 7 is tightly connected with top connection 8,
Lower sleeve 5 is tightly connected with central canal 2.
The middle part of described central canal 2 is shaped with setting inlet opening 9, the expanding formation in lower end plunger shaft 14,
And central canal 2 is built with sliding sleeve 3, and sliding sleeve 3 is made to be fixed on by sliding sleeve shear pin 13
In lower contact 1；The upper end of described sliding sleeve 3 is sealed with central canal 2 by ring-shaped step, sliding sleeve
The middle part of 3 is shaped with in plunger shaft inlet opening 12, sliding sleeve 3 times under inlet opening 10 and plunger shaft
End is shaped with ratchet 15, and the lower end of ratchet 15 has reducing, and makes ratchet 15 connect under being positioned at
In the centre bore of 1 upper end；The middle part of described lower contact 1 is shaped with diameter more than its centre bore
Concentric steps hole 16, and make ratchet 15 be positioned at the top of stepped hole 16；Inverted " t " type pipe
Shape piston 4 is made up of piston head 17 and extension 18 and is sleeved on the outer wall of sliding sleeve 3, institute
State piston head 17 to be positioned in plunger shaft 14, extension 18 be positioned at central canal 2 and sliding sleeve 3 it
Between；Described piston head 17 is fixed with sliding sleeve 3 by piston shear pin 11, and piston head
The lower surface area of 17 is more than its upper surface area, and makes inlet opening 10 and piston in plunger shaft
Under chamber, inlet opening 12 lays respectively at the both sides up and down of piston head 17.
Described plunger shaft 14 is the inner bore of step that a lower end is uncovered.Described sliding sleeve 3 and ratchet 15
For integral type structure, and the external diameter of ratchet 15 non-reducing section is identical with sliding sleeve 3 external diameter,
Work process: time setting, falls in the ratchet 15 of sliding sleeve 3 from the steel ball of well head input,
Pressure in lower contact centre bore makes central canal 2 closed by steel ball increases, under pressure, and steel ball
Driving sliding sleeve 3 descending, cut off sliding sleeve shear pin 13, sliding sleeve continues traveling downwardly, setting feed liquor
Hole 9 is opened, and liquid enters the space between packing element 6 and central canal 2, and packer starts setting；
When sliding sleeve 3 comes downwards in the stepped hole 16 of lower contact 1, the ratchet 15 of sliding sleeve 3 loses down
Its constraint is opened by joint 1, and steel ball is crossed ratchet 15 and fallen into down-hole, and sliding sleeve 3 loses
Descending active force.Now, hydraulically full, due to work in the chamber of piston head 17 both sides
The area of chock plug 17 lower surface is more than the area of its upper surface, under the effect of hydraulic pressure,
Piston head 17 drives sliding sleeve 3 the most up, until closing setting by piston shear pin 11
Inlet opening 9, makes packer keep setting state.
When needing deblocking, put into steel ball from well head, fall in the inclined-plane of sliding sleeve 3 endoporus upper end,
Pressure in sliding sleeve 3 endoporus makes central canal 2 closed by steel ball increases, under pressure, and sliding sleeve 3
Descending, when sliding sleeve comes downwards to the extreme position of piston head 17, cut off piston shear pin 11,
Now, setting inlet opening 9 is opened, and sliding sleeve 3 no longer ibid moves with piston 4 one, when in tubing string
After pressure venting, under the resilience force effect of packing element 6, packing element 6 shrinks, removing seal for packer.
Claims (3)
1. a controlled hydraulic formula packer, including lower contact (1), central canal (2), under
Sleeve (5), expansion packing element (6), upper bush (7) and top connection (8), lower contact (1)
Being connected to the lower end of central canal (2), top connection (8) is connected to the upper end of central canal (2),
Expansion packing element (6) is sleeved on central canal (2) by upper bush (7) and lower sleeve (5)
Middle part, and the upper end of upper bush (7) is tightly connected with top connection (8), lower sleeve (5)
It is tightly connected with central canal (2), it is characterized in that: the middle part of described central canal (2) is shaped with seat
Envelope inlet opening (9), the expanding formation in lower end plunger shaft (14), and central canal (2) is built with cunning
Set (3), and make sliding sleeve (3) be fixed in lower contact (1) by sliding sleeve shear pin (13)；
The upper end of described sliding sleeve (3) is sealed with central canal (2) by ring-shaped step, sliding sleeve (3)
Middle part be shaped with inlet opening (12) under inlet opening in plunger shaft (10) and plunger shaft, sliding sleeve (3)
Lower end be shaped with ratchet (15), and the lower end of ratchet (15) has reducing, and makes ratchet (15)
It is positioned in the centre bore of lower contact (1) upper end；The middle part of described lower contact (1) is shaped with diameter
More than the concentric steps hole (16) of its centre bore, and ratchet (15) is made to be positioned at stepped hole (16)
Top；Inverted " t " type tubular piston (4) is by piston head (17) and extension (18)
Constituting and be sleeved on the outer wall of sliding sleeve (3), described piston head (17) is positioned at plunger shaft (14)
In, extension (18) are positioned between central canal (2) and sliding sleeve (3)；Described piston head (17)
Fixed with sliding sleeve (3) by piston shear pin (11), and the lower end of piston head (17)
Face area is more than its upper surface area, and makes to enter under inlet opening in plunger shaft (10) and plunger shaft
Fluid apertures (12) lays respectively at the both sides up and down of piston head (17).
Controlled hydraulic formula packer the most according to claim 1, is characterized in that: described
Plunger shaft (14) is the inner bore of step that a lower end is uncovered.
Controlled hydraulic formula packer the most according to claim 1 and 2, is characterized in that:
Described sliding sleeve (3) and ratchet (15) are integral type structure, and ratchet (15) non-reducing section
External diameter identical with sliding sleeve (3) external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410468700.3A CN104251127B (en) | 2014-09-15 | 2014-09-15 | Controlled hydraulic formula packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410468700.3A CN104251127B (en) | 2014-09-15 | 2014-09-15 | Controlled hydraulic formula packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104251127A CN104251127A (en) | 2014-12-31 |
| CN104251127B true CN104251127B (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410468700.3A Active CN104251127B (en) | 2014-09-15 | 2014-09-15 | Controlled hydraulic formula packer |
Country Status (1)
| Country | Link |
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| CN (1) | CN104251127B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145274A (en) * | 2019-06-14 | 2019-08-20 | 海塔石油科技有限公司 | A kind of controllable K341 inflatable packer |
| CN110735614A (en) * | 2019-10-11 | 2020-01-31 | 中国石油天然气股份有限公司 | fracturing plugging bridge plug and setting and unsetting method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5813456A (en) * | 1996-11-12 | 1998-09-29 | Milner; John E. | Retrievable bridge plug and retrieving tool |
| RU2347062C1 (en) * | 2007-10-16 | 2009-02-20 | Общество с ограниченной ответственностью "Лифт Ойл" | Packer |
| CN102817577A (en) * | 2011-06-08 | 2012-12-12 | 杨成伟 | Double-cylinder hydraulic packer |
| CN102900395A (en) * | 2011-07-29 | 2013-01-30 | 扬州市驰城石油机械有限公司 | Hydraulic packer |
| CN203175469U (en) * | 2013-01-30 | 2013-09-04 | 中国石油天然气股份有限公司 | Hydraulic packer |
| CN103670324A (en) * | 2013-09-07 | 2014-03-26 | 中国石油集团西部钻探工程有限公司 | Claw sleeve type hydraulic packer |
| CN204113196U (en) * | 2014-09-15 | 2015-01-21 | 宝鸡市赛孚石油机械有限公司 | Controlled hydraulic formula packer |
-
2014
- 2014-09-15 CN CN201410468700.3A patent/CN104251127B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5813456A (en) * | 1996-11-12 | 1998-09-29 | Milner; John E. | Retrievable bridge plug and retrieving tool |
| RU2347062C1 (en) * | 2007-10-16 | 2009-02-20 | Общество с ограниченной ответственностью "Лифт Ойл" | Packer |
| CN102817577A (en) * | 2011-06-08 | 2012-12-12 | 杨成伟 | Double-cylinder hydraulic packer |
| CN102900395A (en) * | 2011-07-29 | 2013-01-30 | 扬州市驰城石油机械有限公司 | Hydraulic packer |
| CN203175469U (en) * | 2013-01-30 | 2013-09-04 | 中国石油天然气股份有限公司 | Hydraulic packer |
| CN103670324A (en) * | 2013-09-07 | 2014-03-26 | 中国石油集团西部钻探工程有限公司 | Claw sleeve type hydraulic packer |
| CN204113196U (en) * | 2014-09-15 | 2015-01-21 | 宝鸡市赛孚石油机械有限公司 | Controlled hydraulic formula packer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104251127A (en) | 2014-12-31 |
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