CN209539322U - A kind of deblocking time stage stress packer group - Google Patents
A kind of deblocking time stage stress packer group Download PDFInfo
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- CN209539322U CN209539322U CN201920188863.4U CN201920188863U CN209539322U CN 209539322 U CN209539322 U CN 209539322U CN 201920188863 U CN201920188863 U CN 201920188863U CN 209539322 U CN209539322 U CN 209539322U
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- packer
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- extending
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Abstract
The utility model belongs to oil field well field of tool, more particularly to a kind of deblocking time stage stress packer group, including level-one packer and second level packer, the structure of level-one packer includes top connection, lower contact, packing element component, setting mechanism and central tube, and top connection and lower contact are threadedly attached in the upper and lower ends of central tube respectively；Packing element component, including bushing pipe and packing element, packing element and set piston and are sleeved on bushing pipe, and liner sleeve is on central tube；Lower shell is cased on the outside of the lower contact upper end, the second level packer is only that the length of extending and central tube is different from the difference of level-one packer, in second level packer, the length of extending and central tube is longer than the length of extending and central tube in level-one packer.The utility model has carried out difference design to the packers at different levels of underground different layers position, realizes abnormal reliable gradually deblocking function, the dependable with function of gradually deblocking packer has been effectively ensured.
Description
Technical field
The utility model belongs to oil field well field of tool more particularly to a kind of deblocking time stage stress packer group.
Background technique
The advantages of gradually deblocking packer is a kind of novel packer, this packer is that the packers at different levels of full well exist
Stress one by one when deblocking, therefore unseal power very little, will not occur unsealing as common packer power it is excessive be difficult to unseal ask
Topic.However, existing gradually deblocking packer is to realize this function of gradually deblocking by complicated solution sealing mechanism mostly, by
In mechanism complexity, it is very easy to break down under the complex working condition of underground, the reliability for solving sealing mechanism is poor.
Utility model content
The utility model provides a kind of deblocking time stage stress packer group, including level-one packer and second level packer,
The structure of level-one packer includes top connection, lower contact, packing element component, setting mechanism and central tube, and top connection and lower contact divide
It is not threadedly attached in the upper and lower ends of central tube；
Packing element component, including bushing pipe and packing element, packing element are sleeved on bushing pipe, and liner sleeve is on central tube；
Setting mechanism, including piston, circlip, clip spring seat and retaining set are set, it sets piston and clip spring seat and is sleeved on institute
On the bushing pipe stated, clip spring seat is connected on bushing pipe by unsealing pin, and the circlip is mounted on the annular groove on the outside of clip spring seat
Interior, the retaining set is threadedly attached in the lower end for setting piston, is provided with phase on the outside of the inside of retaining set and circlip
The retaining screw thread mutually engaged；
Lower shell is cased on the outside of the lower contact upper end, the lower end of lower shell is connected to lower contact by setting pin
On, extending is provided between lower shell and retaining set, the upper and lower ends of extending pass through screw thread and retaining set and lower cylinder respectively
Body is fixedly connected, and the liquid pass hole for being connected to space inside and outside central tube is provided in lower contact；
The second level packer is only that the length of extending and central tube is different from the difference of level-one packer, second level
In packer, the length of extending and central tube is longer than the length of extending and central tube in level-one packer.
The utility model has the following beneficial effects:
1, the utility model has carried out difference design to the packers at different levels of underground different layers position, realizes abnormal reliable
The dependable with function of gradually deblocking packer has been effectively ensured in gradually deblocking function.
2, in the utility model, central tube can axial motion (prolong by vibration range foundation in a big way after the completion of setting
The length of long cylinder determines), it can be provided when length variation occurs due to internal pressure changes or expands with heat and contract with cold for oil pipe for oil pipe
One activity surplus prevents stress from concentrating on packing element adversely affecting the reliability that sets of packer.
Detailed description of the invention
Fig. 1 is the overall structure diagram of level-one packer in the utility model；
Fig. 2 is the overall structure diagram of second level packer in the utility model.
In figure: 1- top connection, 2- packing element, 3- bushing pipe, 4- set piston, 5- circlip, 6- clip spring seat, 7- deblocking pin, 8-
Retaining set, 9- extending, 10- lower shell, 11- lower contact, 12- set pin, 13- liquid pass hole, 14- central tube, 15- retaining spiral shell
Line.
Specific embodiment
The utility model is described further below in conjunction with attached drawing:
The present embodiment includes level-one packer and second level packer, at different levels packings of the utility model to underground different layers position
Device has carried out difference design, realizes abnormal reliable gradually deblocking function, the reliable of gradually deblocking packer has been effectively ensured
Property and practicability.
The structure of level-one packer includes top connection 1, lower contact 11, packing element component, setting mechanism and central tube 14, is above connect
First 1 and lower contact 11 be threadedly attached in the upper and lower ends of central tube 14 respectively.Packing element component, including bushing pipe 3 and packing element 2,
Packing element 2 is sleeved on bushing pipe 3, and bushing pipe 3 is sleeved on central tube 14；Setting mechanism, including set piston 4, circlip 5, clip spring seat 6
With retaining set 8, sets piston 4 and circlip 5 are sleeved on the bushing pipe 3, clip spring seat 6 is connected to by unsealing pin 7
On bushing pipe 3, the circlip 5 is mounted in the annular groove in 6 outside of clip spring seat, and the retaining set 8 is threadedly attached in seat
The lower end of piston 8 is sealed, the inside of retaining set 8 and the outside of circlip 5 are provided with intermeshing retaining screw thread 15.Although big above
Common structure in mostly existing packer, but it is the necessary structure for realizing function described in the utility model, it cannot be random
Replacement.
Lower shell 10 is cased on the outside of 11 upper end of lower contact, the lower end of lower shell 10 is connected to by setting pin 12
In lower contact 11, be provided with extending 9 between lower shell 10 and retaining set 8, the upper and lower ends of extending 9 pass through respectively screw thread with
Retaining set 8 is fixedly connected with lower shell 10, and the liquid excessively for being connected to space inside and outside central tube 14 is provided in lower contact 11
Hole 13.The second level packer is only that the length of extending 9 and central tube 14 is different from the difference of level-one packer, second level
In packer, the length of extending 9 and central tube 14 is longer than the length of extending 9 and central tube 14 in level-one packer.
When installation, extending 9 and the longer packer of central tube 14 are mounted on upper layer, and extending 9 and central tube 14 are shorter
Packer be mounted on lower layer, when deblocking, above mention central tube 14, lower contact 11 cuts deblocking pin 7 after colliding the lower end of bushing pipe 3
It is disconnected, complete level-one removing seal for packer, after level-one removing seal for packer, second level packer since the sliding distance of central tube 14 is longer,
Therefore can't with level-one packer simultaneously stress unseal, to realize the purpose of gradually deblocking.
In the utility model, central tube 14 can axial motion (prolong by vibration range foundation in a big way after the completion of setting
The length of long cylinder 9 determines), it can be mentioned when length variation occurs due to internal pressure changes or expands with heat and contract with cold for oil pipe for oil pipe
For an activity surplus, prevent stress from concentrating on packing element 2 adversely affecting the reliability that sets of packer.
Claims (1)
1. a kind of deblocking time stage stress packer group, it is characterised in that: including level-one packer and second level packer, level-one envelope
Every the structure of device include top connection (1), lower contact (11), packing element component, setting mechanism and central tube (14), top connection (1) and
Lower contact (11) is threadedly attached in the upper and lower ends of central tube (14) respectively；
Packing element component, including bushing pipe (3) and packing element (2), packing element (2) are sleeved on bushing pipe (3), and bushing pipe (3) is sleeved on central tube
(14) on；
Setting mechanism, including piston (4), circlip (5), clip spring seat (6) and retaining set (8) are set, set piston (4) and circlip
(5) seat is sleeved on the bushing pipe (3), and clip spring seat (6) is connected on bushing pipe (3) by unsealing pin (7), the card
Spring (5) is mounted in the annular groove on the outside of clip spring seat (6), and the retaining set (8), which is threadedly attached in, sets piston (4)
Lower end is provided with intermeshing retaining screw thread (15) on the outside of the inside of retaining set (8) and circlip (5)；
It is cased with lower shell (10) on the outside of lower contact (11) upper end, the lower end of lower shell (10) is by setting pin (12) even
It connects on lower contact (11), is provided between lower shell (10) and retaining set (8) extending (9), the upper and lower ends of extending (9)
It is fixedly connected respectively by screw thread with retaining set (8) and lower shell (10), lower contact is provided on (11) for being connected to central tube
(14) liquid pass hole (13) in space inside and outside；
The second level packer is only that the length of extending (9) and central tube (14) is different from the difference of level-one packer,
In second level packer, the length of extending (9) and central tube (14) is longer than extending (9) and central tube (14) in level-one packer
Length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920188863.4U CN209539322U (en) | 2019-02-05 | 2019-02-05 | A kind of deblocking time stage stress packer group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920188863.4U CN209539322U (en) | 2019-02-05 | 2019-02-05 | A kind of deblocking time stage stress packer group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209539322U true CN209539322U (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920188863.4U Active CN209539322U (en) | 2019-02-05 | 2019-02-05 | A kind of deblocking time stage stress packer group |
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| CN (1) | CN209539322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360431A (en) * | 2020-11-11 | 2021-02-12 | 中石化石油工程技术服务有限公司 | Oil and gas well multilayer testing device and testing method |
-
2019
- 2019-02-05 CN CN201920188863.4U patent/CN209539322U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360431A (en) * | 2020-11-11 | 2021-02-12 | 中石化石油工程技术服务有限公司 | Oil and gas well multilayer testing device and testing method |
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