CN105986778B - Interior compression hydraulically-controlled type packer - Google Patents
Interior compression hydraulically-controlled type packer Download PDFInfo
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- CN105986778B CN105986778B CN201510072102.9A CN201510072102A CN105986778B CN 105986778 B CN105986778 B CN 105986778B CN 201510072102 A CN201510072102 A CN 201510072102A CN 105986778 B CN105986778 B CN 105986778B
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- packing element
- piston
- outer barrel
- top connection
- lower contact
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Abstract
The invention discloses interior compression hydraulically-controlled type packers, including sequentially connected top connection, outer barrel, lower contact from top to bottom, the outer barrel sets packing element, packing element bottom connects piston, the piston is temporarily fixed by shear pin with lower contact, and the packing element upper end is connected by regulation ring with top connection, and the regulation ring, packing element, piston form inner tube structure, annular space is formed between the outer barrel and inner tube structure, the top connection and lower contact open up the axial pressure transmission hole towards above-mentioned annular space.Supporter is set between the packing element and outer barrel, supporter upper end is connected with top connection.It connects for stairstepping end face between the packing element upper end and regulation ring lower end, is also connected between the packing element lower end and piston upper end for stairstepping end face.The present invention solves the problems, such as that inner and outer pipes shunting in the prior art is unreliable, anti-flushing well is obstructed, it is cumbersome to test envelope.
Description
Technical field
The present invention relates to downhole packer, specifically interior compression hydraulically-controlled type packer.
Background technology
The water injection technology that marine water injection well uses at present adjusts integrated skill for open-core type separate zone waterflooding technology, using concentric survey
Art carries out water injection well online survey and adjusts.Due to being limited by hole deviation, bottom pressure it is big, it is temperature high condition constrain, largely effect on
Power is measured and tuned into, constrains the active demand of the marine water filling that becomes more meticulous.
Concentric double pipe water filling can realize effective seperated layer water injection of big pressure difference oil reservoir, and ground allotment, with surveying, tune is simple, matches somebody with somebody
It notes the characteristics of accurate, while need not individually carry out test allotment, save substantial amounts of workload.Therefore, two-tube water filling is relatively more suitable
Together in field use at sea.At sea oil field has obtained effective implementation to concentric double pipe water injection technology.To realize shaft bottom
Stablize shunting between inner and outer pipes, devise internal sealed current divider, but the technique is equally limited in the application by hole deviation, well
Bottom pressure is big, the constraint of temperature high condition.Exist in application process in the technology：Under outer tube in place after, tripping in bottom band
Have the inner tube of sealing plug, when hole deviation is larger or well in environment it is dirtier when, inner tube sealing plug and internal sealed current divider
Inner sealing surface is unable to fitted seal.Particularly with Dongying Formation deep-well, when water filling operating mode changes, string creep, high temperature are high
Pressure causes inner sealing surface to damage, and causes inner and outer pipes that cannot effectively shunt, and affects offshore oilfield and becomes more meticulous the effect of water filling.This
Outside, inner tube weight is all added in outer tube top by the use of interior sealing current divider, adds the probability of outer tube failure.
The content of the invention
It is an object of the invention to provide interior compression hydraulically-controlled type packers, solve inner and outer pipes in the prior art point
Flow unreliable, anti-flushing well is obstructed, test envelope it is cumbersome the problem of.
In order to achieve the above objectives, present invention employs following technical solution, interior compression hydraulically-controlled type packer, including from upper
Sequentially connected top connection, outer barrel, lower contact under and, the outer barrel set packing element, packing element bottom connection piston, the work
Plug is temporarily fixed by shear pin with lower contact, and the packing element upper end is connected by regulation ring with top connection, the regulation ring, glue
Cylinder, piston form inner tube structure, annular space are formed between the outer barrel and inner tube structure, the top connection and lower contact open up axis
To the pressure transmission hole towards above-mentioned annular space.
Supporter is set between the packing element and outer barrel, supporter upper end is connected with top connection.
Connected between the packing element upper end and regulation ring lower end for stairstepping end face, the packing element lower end and piston upper end it
Between also for stairstepping end face connect.
Screw thread is opened up at the pressure transmission hole port.
Between the top connection and outer barrel, between top connection and supporter, between supporter and piston, piston and lower contact
Between, between lower contact and outer barrel be equipped with washer and cushion rubber.
Compared to the prior art, the invention has the advantages that：
The plugging device for separating inner and outer pipes, interior compression hydraulically-controlled type packing are used for the invention belongs to oil field concentric double pipe water injection well
Device controls packing element inwardly to set by geostatic pressure, realizes the reliable and stable shunting of inner and outer pipes.Ground pressure release can be real
Existing removing seal for packer, realizes huge discharge anti-flushing well.The deblocking that sets of packer is realized by the way of hydraulic control, it is easy to operate, again
It is reliable and stable.Disclosure satisfy that marine high angle hole, hp-ht well two-tube water filling needs.Meanwhile inner and outer pipes are not mutually dry
Relate to, solve former inner tube by under inner tube sealing plug on outer tube, cause outer tube stress too big easily failure the problem of.
Description of the drawings
Fig. 1 is the structure diagram of the interior compression hydraulically-controlled type packer of the present invention.
In figure, 1 top connection, 2 regulation rings, 3 packing elements, 4 spacer rings, 5 supporters, 6 washers, 7 cushion rubbers, 8 outer barrels, 9 pistons, 10 are cut
Nail, 11 lower contacts, 12 pipe nipples, pressure transmission hole, 14 times pressure transmission holes on 13.
Specific embodiment
Detailed description for the present invention and technology contents, cooperation description of the drawings it is as follows, however attached drawing only provide reference with
Purposes of discussion is not used for being any limitation as the present invention.
According to Fig. 1, it is interior compression hydraulically-controlled type packer, including sequentially connected top connection 1 from top to bottom, outer barrel 8, under
Connector 11, outer barrel set packing element 3, packing element bottom connection piston 9, and piston is temporarily fixed by shear pin 10 with lower contact, glue
Cylinder upper end is connected by regulation ring 2 with top connection, and regulation ring, packing element, piston form inner tube structure, between outer barrel and inner tube structure
Annular space is formed, top connection and lower contact open up the axial pressure transmission hole towards above-mentioned annular space.It is set between packing element and outer barrel
Supporter 5, supporter upper end are connected with top connection.It is connected between packing element upper end and regulation ring lower end for stairstepping end face, packing element
It is also connected between lower end and piston upper end for stairstepping end face.Pressure transmission hole opens up screw thread at port.Between top connection and outer barrel,
It is equipped with padding between top connection and supporter, between supporter and piston, between piston and lower contact, between lower contact and outer barrel
Circle and cushion rubber.
Packing element can suitably adjust glue when will be designed as ladder type end side, while installing to prevent from coming off by regulation ring
Cooperation between cylinder, spacer ring and piston；Using complex fire resistant wear-resistant material, adapting to hp-ht well makes for packing element, washer, cushion rubber
With.
Top connection 1 is drilled with pressure transmission hole 13, and screw thread cooperation installation silk plug, the upper part of top connection are drilled in upper pressure transmission hole 13
Internal cutting thread is connected with water filling outer tube, and lower part inside cutting thread is connected with the regulation ring 2, vehicle outside top connection lower part
Screw thread is connected with the supporter, and the packing element 3, spacer ring 4, the cooperation installation of piston 9 are drilled with through hole on piston, with it is described under connect
The shear pin 10 is installed in first 11 cooperation, and part is threadedly coupled with top connection on the outer barrel 8, outer barrel lower part and lower contact screw thread
It connects, is drilled with lower pressure transmission hole 14 in lower contact, internal cutting thread is connected with the pipe nipple 12, and being drilled with screw thread in lower pressure transmission hole 14 matches somebody with somebody
Close installation liquid controling pipe line connector.In concentric double pipe water injection string, interior compression hydraulically-controlled type packer is connected with outer tube, on packer
Portion connects liquid controling pipe line to well head by the lower pressure transmission hole 14, and upper pressure transmission hole 13 connects silk plug.To ensure marine well control safety
It is required that installation two-switch control safety valve in well.Inner and outer pipes install the screen casing of correspondingly-sized as water outlet respectively.When outer tube and interior
When under managing all in place, geostatic pressure enters packer intracavitary by liquid controling pipe line, lower pressure transmission hole 14, when reaching certain pressure,
The shear pin is cut, piston promotes packing element, spacer ring to squeeze together until blocking inner and outer pipes annular space completely.Meanwhile oil reservoir pair
The layer separating packer answered also has been set.Inner tube water filling at this time directly injects lower floor by inner tube screen casing, and outer tube water filling passes through outer
Pipe screen casing injects upper strata, so as to have the function that two-tube dispensing.Pass through ground release, you can realize the quick solution of packing element
Envelope, you can realize the anti-flushing well of huge discharge.It is easy to operate, it is reliable and stable.
The foregoing is merely presently preferred embodiments of the present invention, and non-to limit the scope of the claims of the present invention, other are with this
The equivalence changes of the patent spirit of invention should all belong to the scope of the claims of the present invention.
Claims (5)
- Compression hydraulically-controlled type packer in 1., including sequentially connected top connection, outer barrel, lower contact from top to bottom, which is characterized in that The outer barrel sets packing element, packing element bottom connection piston, and the piston is temporarily fixed by shear pin with lower contact, the glue Cylinder upper end is connected by regulation ring with top connection, and the regulation ring, packing element, piston form inner tube structure, the outer barrel and inner cylinder Annular space is formed between structure, the top connection and lower contact open up the axial pressure transmission hole towards above-mentioned annular space.
- 2. interior compression hydraulically-controlled type packer according to claim 1, which is characterized in that be set between the packing element and outer barrel There is supporter, supporter upper end is connected with top connection.
- 3. interior compression hydraulically-controlled type packer according to claim 1, which is characterized in that under the packing element upper end and regulation ring It connects for stairstepping end face between end, is also connected between the packing element lower end and piston upper end for stairstepping end face.
- 4. interior compression hydraulically-controlled type packer according to claim 1, which is characterized in that opened up at the pressure transmission hole port Screw thread.
- 5. interior compression hydraulically-controlled type packer according to claim 2, which is characterized in that between the top connection and outer barrel, It is equipped with padding between top connection and supporter, between supporter and piston, between piston and lower contact, between lower contact and outer barrel Circle and cushion rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072102.9A CN105986778B (en) | 2015-02-11 | 2015-02-11 | Interior compression hydraulically-controlled type packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510072102.9A CN105986778B (en) | 2015-02-11 | 2015-02-11 | Interior compression hydraulically-controlled type packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105986778A CN105986778A (en) | 2016-10-05 |
| CN105986778B true CN105986778B (en) | 2018-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510072102.9A Active CN105986778B (en) | 2015-02-11 | 2015-02-11 | Interior compression hydraulically-controlled type packer |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019193B (en) * | 2016-11-02 | 2023-09-05 | 中国石油化工股份有限公司 | Hollow measuring and adjusting integrated polymer injection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2467788Y (en) * | 2001-02-13 | 2001-12-26 | 张宝有 | Cleanable well packer |
| CN2720104Y (en) * | 2004-08-13 | 2005-08-24 | 阜新市石油工具厂 | Fully-closed hydraulic packer |
| CN202690023U (en) * | 2012-07-05 | 2013-01-23 | 中国石油化工股份有限公司 | Inside seal type flow divider |
| CN204436325U (en) * | 2015-02-11 | 2015-07-01 | 中国石油化工股份有限公司 | Compression packer in hydraulically-controlled type |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070012460A1 (en) * | 2005-07-13 | 2007-01-18 | Baker Hughes Incorporated | Hydrostatic-set open hole packer with electric, hydraulic and/or optical feed throughs |
-
2015
- 2015-02-11 CN CN201510072102.9A patent/CN105986778B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2467788Y (en) * | 2001-02-13 | 2001-12-26 | 张宝有 | Cleanable well packer |
| CN2720104Y (en) * | 2004-08-13 | 2005-08-24 | 阜新市石油工具厂 | Fully-closed hydraulic packer |
| CN202690023U (en) * | 2012-07-05 | 2013-01-23 | 中国石油化工股份有限公司 | Inside seal type flow divider |
| CN204436325U (en) * | 2015-02-11 | 2015-07-01 | 中国石油化工股份有限公司 | Compression packer in hydraulically-controlled type |
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| Publication number | Publication date |
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| CN105986778A (en) | 2016-10-05 |
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