CN206220876U - A kind of releasing type compensator - Google Patents
A kind of releasing type compensator Download PDFInfo
- Publication number
- CN206220876U CN206220876U CN201621092036.8U CN201621092036U CN206220876U CN 206220876 U CN206220876 U CN 206220876U CN 201621092036 U CN201621092036 U CN 201621092036U CN 206220876 U CN206220876 U CN 206220876U
- Authority
- CN
- China
- Prior art keywords
- central tube
- ring
- overcoat
- lower contact
- releasing type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a kind of releasing type compensator, including inner central tube, exterior central tube, sealing drum assembly, overcoat, the inner central tube outer wall sets gradually the sealing drum assembly and exterior central tube being connected from top to bottom, the exterior central tube and inner central tube are temporarily locked by closing piece, the overcoat is enclosed within exterior central tube outer wall, and the outer casing inner wall opens up the release groove for discharging above-mentioned closing piece.The inner central tube lower end abuts lower contact, is formed between the overcoat and lower contact and piston is set in plunger shaft, plunger shaft, and the piston is temporarily connected in lower contact by shear pin, and the lower contact opens up the radial hole towards plunger shaft.The utility model is provided simultaneously with length away from compensation and examines the function of changing safely, and it is safety-type significant to change tubing string to the raising separate injection tubing string term of validity and inspection.
Description
Technical field
The utility model is related to water injection well in oil fields to be layered injection technique, especially a kind of releasing type compensator.
Background technology
Water filling is the important means of agent for improving oilfield recovery.The subject matter that current separate layer water injection string is present has：(1) manage
Post is setting, water filling, stop the states such as note, well-flushing by elongation occurring under the influence of temperature effect, pressure effect etc. or shortening, and stretches
Power causes tubing string to be wriggled, and causes packing element to destroy, and reduces the life-span of separate injection tubing string；(2) tubing string is for a long time in underground
There is corrosion and scaling by water quality impact, cause the instruments such as packer, hydraulic anchor, the hydraulic slip of tubing string normally to unseal, on
Tubing string is disconnected de- during portion's tube corrosion destruction causes to carry, and causes repetition salvaging, overhaul even well to be scrapped.Prior art exists
Compensator carries out length compensation on tubing string, and carrying out inspection using safety joint changes safe disconnected de-, and the subject matter for existing is：(1) manage
It is more complicated more than post instrument；(2) compensator compensation is away from limited；(3) safety joint need rotation or on put off de-, compensator is typically not
Anti-rotation or anti-rotation ability cause that rotation mode is disconnected de- to have a risk, top tubing string seriously corroded be easily caused during carrying from
Oil pipe weakness is disconnected de-.
Utility model content
The purpose of this utility model is to provide a kind of releasing type compensator, and the tool construction is simple, is provided simultaneously with long away from benefit
The function of changing is repaid and examines safely, it is safety-type significant to change tubing string to the raising separate injection tubing string term of validity and inspection.
The purpose of this utility model can be achieved by the following technical measures：
The releasing type compensator includes inner central tube, exterior central tube, sealing drum assembly, overcoat, the inner central tube outer wall
The sealing drum assembly and exterior central tube being connected are set gradually from top to bottom, and the exterior central tube and inner central tube are temporary by closing piece
Shi Suoding, the overcoat is enclosed within exterior central tube outer wall, and the outer casing inner wall opens up the release groove for discharging above-mentioned closing piece.
The purpose of this utility model can also be achieved by the following technical measures：
The inner central tube lower end abuts lower contact, and plunger shaft is formed between the overcoat and lower contact, is set in plunger shaft
Piston is put, the piston is temporarily connected in lower contact by shear pin, and the lower contact opens up the radial direction towards plunger shaft
Hole.
The overcoat lower end connects lower block cap, and locating ring is provided with the lower contact.
The sealing drum assembly includes sealing shroud, seal, forms annular space between the sealing shroud and inner central tube, the ring
At least two seals are set in empty, and the seal sets spacer ring, the upper end of the top seal and bottom between any two
The lower end connection support ring of seal.
The spacer ring is recessed spacer ring or convex spacer ring.
The sealing set upper side connects fishing head, lower end connection pressure cap, pressure cap lower end connection exterior central tube, the fishing head
Lower surface abuts the support ring of the top seal, and the pressure cap upper surface abuts the support ring of bottom seal.
The inner central tube upper end connects top connection, and regulation ring is installed in top connection, and regulation ring lower surface abuts fishing head
Upper surface.
The utility model has the advantages that：
1st, form a kind of while realizing tubing string flexible compensation and examining the releasing type compensator for changing safely；
2nd, given up using closing piece mechanism controls, under enter safely, reliability of giving up；
3rd, line slip high pressure sealing is entered using multigroup micro- interference seal part, seal pressure is high, is capable of achieving large compensation away from big
Long term seal.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment.
In figure：Top connection 1, regulation ring 2, fishing head 3, inner central tube 4, sealing shroud 5, support ring 6, recessed spacer ring 7, convex spacer ring
8th, seal 9, pressure cap 10, exterior central tube 11, overcoat 12, closing piece 13, piston 14, lower block cap 15, shear pin 16, lower contact 17, fixed
Position ring 18.
Specific embodiment
Relevant detailed description of the present utility model and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing only provides ginseng
Examine and purposes of discussion, not for being any limitation as to the utility model.
According to Fig. 1, releasing type compensator, including inner central tube 4, exterior central tube 11, sealing drum assembly, overcoat 12 are described
Inner central tube outer wall sets gradually the sealing drum assembly and exterior central tube being connected, the exterior central tube and interior center from top to bottom
Pipe is temporarily locked by closing piece 13, and the overcoat is enclosed within exterior central tube outer wall, and the outer casing inner wall is opened up for discharging above-mentioned lock
The release groove of block.The upper end of the sealing shroud 5 connects fishing head 3, and lower end connection pressure cap 10, pressure cap lower end connects exterior central tube,
The fishing head lower surface abuts the support ring of the top seal, and the pressure cap upper surface abuts the support of bottom seal
Ring.The inner central tube upper end connects top connection 1, and regulation ring 2 is installed in top connection, and regulation ring lower surface abuts the upper of fishing head
End face.The sealing drum assembly includes sealing shroud 5, seal 9, forms annular space between the sealing shroud and inner central tube, the ring
At least two seals are set in empty, and the seal sets spacer ring, the upper end of the top seal and bottom between any two
The lower end connection support ring of seal.The spacer ring is recessed spacer ring 7 or convex spacer ring 8.
The inner central tube lower end abuts lower contact 17, plunger shaft is formed between the overcoat and lower contact, in plunger shaft
Piston 14 is set, and the piston is temporarily connected in lower contact by shear pin 16, and the lower contact is opened up towards plunger shaft
Radial hole.The overcoat lower end connection lower block cap 15, is provided with locating ring 18 in the lower contact.
Releasing type compensator applies to the important tool of separated-zone water infection oil field, to meet the permanently effective dispensing of separate injection tubing string
And design.Using the release of closing piece mechanism controls compensation mechanism, under enter during closing piece mechanism keep locking state, it is ensured that tubing string
Enter under safety.Control closing piece to discharge using mode is suppressed in oil pipe, suppressed in oil pipe to certain pressure value, piston movement cutting is cut
Nail, piston be connected with overcoat and together with move down, the groove that puts outward alignment closing piece, closing piece enters overcoat groove, by interior center
Pipe discharges, and completes to give up.Inner central tube upper end is connected with oil pipe, and lower contact is connected with bottom tubing string, and inner central tube can be in compensation
It is up and down in device, but it is not connected with releasing type compensator.Micro- mistake is formed using multigroup elastic sealing element and inner central tube
It is full of cooperation, central tube ensures to be in sealing state in tubing string during up and down.Need inspection change oil pipe when, as long as gently going up
Tubing string is carried, top connection rises for one piece, enters new oil pipe, top connection, inner central tube down again and lose with inner central tube with top oil pipe
Hand formula compensator stays well part to dock, and reduces by a separate layer water injection string.When needing inspection to change separate layer water injection string, first gently above carry
Tubing string, top connection and inner central tube rise for one piece with top oil pipe, then under enter make-up instrument connection fishing head, bottom is layered and is noted
Water pipe post rises.The technique have the advantages that simple structure, under enter safely, reliability of giving up, compensation effect be good, good seal performance,
It is significant to oil field extension water injection string life-span, reduction operating cost.
Operation principle：
Enter under safety：Several closing pieces 13 are installed, closing piece part is stuck in the groove on inner central tube 4 on exterior central tube,
Under enter the locked exterior central tube of state closing piece.
Give up：After entering under tubing string, oil pipe drives overcoat 12 to come downwards to calmly after suppressing the descending cutting shear pin 16 of promotion piston 14
Position ring 18, is provided with groove on the inwall of overcoat 12, closing piece 13 is released into groove.The constraint that exterior central tube 4 loses closing piece 14 can
Freely activity upwards.
High pressure sealing and compensation：Multigroup seal 9 is opened by support ring 6, recessed spacer ring 7, the packing of convex spacer ring 8, with inner central tube 4
Micro- interference fit is formed, central tube ensures to be in sealing state in tubing string during up and down.
Inspection is changed：Top connection 1 can be played out, and to top oil pipe, individually inspection is changed with inner central tube 4, and bottom tubing string is salvaged and salvaged at present
Instrument docking fishing head 3 is carried out to buckle fisher.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the scope of the claims of the present utility model, its
He all should all belong to the scope of the claims of the present utility model with the equivalence changes of patent spirit of the present utility model.
Claims (7)
1. a kind of releasing type compensator, it is characterised in that described including inner central tube, exterior central tube, sealing drum assembly, overcoat
Inner central tube outer wall sets gradually the sealing drum assembly and exterior central tube being connected, the exterior central tube and interior center from top to bottom
Pipe is temporarily locked by closing piece, and the overcoat is enclosed within exterior central tube outer wall, and the outer casing inner wall is opened up for discharging above-mentioned closing piece
Release groove.
2. a kind of releasing type compensator according to claim 1, it is characterised in that the inner central tube lower end connects under abutting
Head, is formed between the overcoat and lower contact and piston is set in plunger shaft, plunger shaft, and the piston is temporarily connected by shear pin
It is connected in lower contact, the lower contact opens up the radial hole towards plunger shaft.
3. a kind of releasing type compensator according to claim 2, it is characterised in that the overcoat lower end connects lower block cap,
Locating ring is installed in the lower contact.
4. a kind of releasing type compensator according to claim 1, it is characterised in that the sealing drum assembly includes sealing
Set, seal, annular space is formed between the sealing shroud and inner central tube, and at least two seals are set in the annular space, described close
Sealing sets spacer ring, the upper end of the top seal and the lower end connection support ring of bottom seal between any two.
5. a kind of releasing type compensator according to claim 4, it is characterised in that the spacer ring be recessed spacer ring or it is convex every
Ring.
6. a kind of releasing type compensator according to claim 4, it is characterised in that the sealing set upper side connection is salvaged
Head, lower end connection pressure cap, pressure cap lower end connection exterior central tube, the fishing head lower surface abuts the support of the top seal
Ring, the pressure cap upper surface abuts the support ring of bottom seal.
7. a kind of releasing type compensator according to claim 4, it is characterised in that connect in the inner central tube upper end connection
Head, installs regulation ring in top connection, regulation ring lower surface abuts the upper surface of fishing head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621092036.8U CN206220876U (en) | 2016-09-29 | 2016-09-29 | A kind of releasing type compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621092036.8U CN206220876U (en) | 2016-09-29 | 2016-09-29 | A kind of releasing type compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206220876U true CN206220876U (en) | 2017-06-06 |
Family
ID=58782643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621092036.8U Expired - Fee Related CN206220876U (en) | 2016-09-29 | 2016-09-29 | A kind of releasing type compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206220876U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882514A (en) * | 2016-09-29 | 2018-04-06 | 中国石油化工股份有限公司 | Releasing type compensator |
| CN114109273A (en) * | 2020-08-26 | 2022-03-01 | 中国石油化工股份有限公司 | Safety device for thickened oil thermal production well |
| CN107882514B (en) * | 2016-09-29 | 2024-05-24 | 中国石油化工股份有限公司 | Release type compensator |
-
2016
- 2016-09-29 CN CN201621092036.8U patent/CN206220876U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882514A (en) * | 2016-09-29 | 2018-04-06 | 中国石油化工股份有限公司 | Releasing type compensator |
| CN107882514B (en) * | 2016-09-29 | 2024-05-24 | 中国石油化工股份有限公司 | Release type compensator |
| CN114109273A (en) * | 2020-08-26 | 2022-03-01 | 中国石油化工股份有限公司 | Safety device for thickened oil thermal production well |
| CN114109273B (en) * | 2020-08-26 | 2024-04-19 | 中国石油化工股份有限公司 | Safety device for thickened oil thermal recovery well |
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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 |
Granted publication date: 20170606 Termination date: 20170929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |