CN108222857B - A kind of injection well pipe column vibration damping abrasionproof compensator and method - Google Patents
A kind of injection well pipe column vibration damping abrasionproof compensator and method Download PDFInfo
- Publication number
- CN108222857B CN108222857B CN201710251281.1A CN201710251281A CN108222857B CN 108222857 B CN108222857 B CN 108222857B CN 201710251281 A CN201710251281 A CN 201710251281A CN 108222857 B CN108222857 B CN 108222857B
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- China
- Prior art keywords
- outer tube
- bar shaped
- leaf spring
- pipe
- closing piece
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
- E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs
- E21B17/1028—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs with arcuate springs only, e.g. baskets with outwardly bowed strips for cementing operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
Abstract
The invention discloses a kind of injection well pipe column vibration damping abrasionproof compensator and methods, injection well pipe column vibration damping abrasionproof compensator includes outer tube, central tube, it further include compensation pipe, bar shaped leaf spring, interstage sleeve, the central tube is mounted on outer tube bore, the compensation pipe is installed between central tube and outer tube in annular space, the interstage sleeve is connected to outer tube lower end, the bar shaped leaf spring setting is between compensation pipe and outer tube in annular space, bar shaped leaf spring upper end is fixed on the outside of compensation pipe, lower end is then connected to interstage sleeve upper end, the outer tube side is equipped with axial elongated rectangular holes, compensation pipe can pull downward on bar shaped leaf spring make bar shaped plate-shaped spring bends processus aboralis for elongated rectangular holes outside.The problem of present invention improves water injection strings to vibrate the delivery context to casing, solves the fretting wear between oil pipe and casing, leads to electrochemical corrosion.
Description
Technical field
The present invention relates to oil water well down-hole string flexible compensation tool, specifically a kind of injection well pipe column vibration damping abrasionproof
Compensator and method.
Background technique
Country's conventional waterflooding well is all to be pressurized under the unified adjusting of ground water-injection station using booster pump at present, is infused by ground
Water pipeline enters well.Due to the vibration characteristics and waterflood-transmission line unstability of water-injection station booster pump, it is also easy to produce injection liquid stream
Fast is unstable, and injection well pipe column is made to be also easy to produce axial vibration and oscillation crosswise, causes water injection string working environment to deteriorate, especially
It is that compensator section oscillation crosswise is obvious in tubing string, is also easy to produce collision, the fretting wear of oil pipe and casing, causes oil pipe and casing anti-
Rotten layer rupture, causes tubular column system chemical attack and galvano-cautery.
According to current water injection well in oil fields status and oil-water well long-life demand, vibration damping abrasionproof compensator is devised, effectively
Improve water injection string and vibrate the transmitting to casing, prevents the generation of the fretting wear between oil pipe and casing.
By retrieval, it is found that many compensators are all nose balances.Lateral is mostly the righting without compensation function
Device, such as application number: 200520113584.X, the applying date: 2005-07-15 discloses a kind of self-sealed compensated beam-pumping stabilizer,
The function of self-sealed compensated oil pumping is played during to rod string process righting.It is to be connect in sucker rod boss with external screw thread
Supporting positive cover is added between box cupling after clamping shelves ring, and the nested crescent seal leather cup on shelves ring.The self-sealed compensated oil pumping righting
Device is played the role of using sealing cup self-sealed compensated above and below sucker rod in operational process, the height of sealing cup marginal portion is resistance to
It grinds coating and supporting positive cover plays centralizing function, avoid the eccentric wear of sucker rod.
The technical solution and principle of technology and the application disclosed above be entirely different, also without any technical inspiration that plays
Technical characteristic.In addition the application can be with nose balance while radial compensation.
Summary of the invention
The purpose of the present invention is to provide a kind of injection well pipe column vibration damping abrasionproof compensator and methods, improve water injection string
The problem of vibrating the delivery context to casing, solving the fretting wear between oil pipe and casing, lead to electrochemical corrosion.
In order to achieve the above objectives, present invention employs following technical solution, a kind of injection well pipe column vibration damping abrasionproof compensation
Device, including outer tube, central tube, further include compensation pipe, bar shaped leaf spring, interstage sleeve, and the central tube is mounted on outer tube bore, the benefit
It repays pipe to be installed between central tube and outer tube in annular space, the interstage sleeve is connected to outer tube lower end, and the bar shaped leaf spring setting is being mended
It repays between pipe and outer tube in annular space, bar shaped leaf spring upper end is fixed on the outside of compensation pipe, and lower end is then connected to interstage sleeve upper end, institute
The outer tube side stated is equipped with axial elongated rectangular holes, and compensation pipe, which can pull downward on bar shaped leaf spring, makes protrusion after bar shaped plate-shaped spring bends
In outside elongated rectangular holes.
The bar shaped leaf spring compensation Guan Shangwei be evenly equipped with it is multiple, the elongated rectangular holes on the outer tube be equally evenly equipped with and
The identical quantity of bar shaped leaf spring, bar shaped leaf spring and elongated rectangular holes correspond.
The radial rectangle closing piece hole for being used to place closing piece is opened up on the compensation pipe, offers correspondence on the inside of the interstage sleeve
In rectangle closing piece hole and can make closing piece enter annular groove.
The central tube lower outside also is provided with annular groove corresponding to rectangle closing piece hole and that closing piece can be made to enter.
Outside is arc-shaped, lower end outside chamfering in the closing piece, and chamfering radial dimension is closing piece radial thickness.
The compensation pipe lower part is axially evenly distributed with 4 or 6 rectangle closing piece holes.
The compensation pipe upper end is equipped with positioning step, prevents bar shaped leaf spring from moving up.
The bar shaped leaf spring is arch.
With counterbore pin fastener on the outside of compensation pipe, lower end is fastened on outer tube with screw for bar shaped leaf spring upper end.
Ring-shaped step is equipped on the inside of the outer tube upper end, ring-shaped step is equipped with radial screw bore, and threaded hole installs shear pin,
Shear pin centre of location pipe axial position.
The central tube upper outside is equipped with a step, corresponding with the ring-shaped step of outer tube.
It is sealed on the inside of the central tube upper outside and outer tube by sealing ring, the central tube lower outside and compensation are managed
Between pass through sealing ring seal.
The outer tube upper end connects top connection.
The top connection and outer effective pin for suppressing metal fasten.
The top connection and outer effective sealing ring seal.
In order to reach above-mentioned another object, present invention employs following technical solution, a kind of injection well pipe column vibration damping abrasionproof
Compensation method, which is characterized in that be connected to injection well pipe column vibration damping abrasionproof compensator after going into the well in water injection string, in water injection pipe
Beat in column hydraulic, central tube will move down under the action of hydraulic pressure difference, and shear pin is cut power and cuts, and central tube is displaced downwardly to and outer tube
Positioning step upper end face contact, central tube annular groove position is corresponding with compensation pipe rectangle closing piece hole at this time, compensates pipe in tubing string
It is moved down under gravity, closing piece is slid onto inwardly in central tube annular groove, and compensation pipe continues to move down compensation water injection pipe axis of a cylinder
To strain, while bar shaped leaf spring outwardly protrudes, and touches water filling casing, constitutes elastic righting structure, prevent water injection string and
Casing contacts firmly, improves stress and is driven environment, reduces fretting wear.
Compared to the prior art, the invention has the following advantages:
(1) alternative water injection well centering device prevents fretting wear between oil pipe and casing.
(2) vibration transmit to casing of water injection string is improved by compensation pipe and bar shaped leaf spring, at the same by compensation manage with
Bar shaped leaf spring can also improve the vibration of tubing string axial direction.
(3) down-hole strings such as deep-well, ultradeep well are applicable to and vibrate biggish water injection well, steam injection well etc..
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of injection well pipe column vibration damping abrasionproof compensator of the invention；
Fig. 2 is the schematic shapes of bar shaped leaf spring；
Fig. 3 is closing piece overlooking structure diagram；
Fig. 4 is closing piece longitudinal sectional drawing.
In figure: top connection 1, outer tube 2, central tube 3 compensate pipe 4, bar shaped leaf spring 5, closing piece 6, interstage sleeve 7.
Specific embodiment
Detailed description for the present invention and technology contents, cooperation Detailed description of the invention is as follows, however attached drawing is only to refer to and say
It is bright to be used, it is not intended to limit the present invention.
As shown in attached drawing 1 to 4, a kind of injection well pipe column vibration damping abrasionproof compensator, the tool is mainly by top connection 1, outer tube
2, central tube 3 compensates pipe 4, bar shaped leaf spring 5, and closing piece 6 and interstage sleeve 7 form, and the top connection 1 is threadedly coupled with outer tube 2, is used in combination
Pin for suppressing metal 201 fastens, and is sealed with sealing ring 101, and the central tube 3 is mounted on 2 inner cavity of outer tube, and the compensation pipe 4 is installed on
Between central tube 3 and outer tube 2 in annular space, the bar shaped leaf spring 5 is mounted between compensation pipe 4 and outer tube 2 in annular space, the interstage sleeve
7 connect with 2 lower thread of outer tube, and are fastened with pin for suppressing metal 702, and the closing piece 6 is mounted on the rectangle lock of compensation 4 lower portion of pipe
In 7 groove 703 of block hole 402 and interstage sleeve.
Ring-shaped step 202 is equipped on the inside of 2 upper end of outer tube, ring-shaped step 202 is equipped with threaded hole, installs in positioning
The shear pin 203 of 3 axial position of heart pipe.
2 side of outer tube is equipped with axially uniformly distributed 6 or 8 elongated rectangular holes 204.
4 upper end of compensation pipe is equipped with positioning step 401, prevents bar shaped leaf spring 5 from moving up.
4 lower part of compensation pipe is axially evenly distributed with 4 or 6 rectangle closing piece holes 402.
According to fig. 2, the bar shaped leaf spring 5 is arch.
The bar shaped leaf spring 5 has 6 or 8, is evenly arranged in the elongated rectangular holes 204 of outer tube 2.
5 upper end of bar shaped leaf spring is mounted on 4 outside of compensation pipe, and is fastened with counterbore pin 501, and lower end is mounted on outer tube
2 lower end insides, 7 upper surface 701 of interstage sleeve, and be fastened on outer tube 2 with screw 702.
3 upper outside of central tube is sealed on the inside of outer tube 2 by sealing ring 301.
3 upper outside of central tube is equipped with a step 304, corresponding with 2 ring-shaped step 202 of outer tube.
3 lower outside of central tube is equipped with annular groove 302, corresponding with 6 size of closing piece.
It is sealed between 3 lower outside of central tube and compensation pipe 4 by sealing ring 303.
Annular groove 703 is equipped on the inside of the interstage sleeve 7, it is corresponding with 6 size of closing piece.
According to Fig. 3, outside is arc-shaped, lower end outside chamfering in the closing piece 6, and chamfering radial dimension is 6 diameter of closing piece
To thickness.
In field tool installation, according to Fig. 1, bar shaped leaf spring 5 is first fastened on compensation 4 upper end of pipe by counterbore pin 501,
Compensate pipe 4 to be inserted into from 2 lower end of outer tube, pile butter in rectangle closing piece hole 402, closing piece 6 is put into rectangle closing piece hole 402, outside with
It is concordant to compensate 4 external cylindrical surface of pipe, adjustment bar shaped leaf spring 5 is directed at 2 elongated rectangular holes 204 of outer tube, is threadedly coupled interstage sleeve 7 to outer tube 2
Lower end, and bar shaped leaf spring 5 and outer tube 2 are fastened with screw 502, closing piece 6 is pressed one by one from compensation 4 lower end of pipe by auxiliary tool
Into in 7 annular groove 703 of interstage sleeve, central tube 3 is inserted into from upper end finally and compensates pipe 4, installation top connection 1 to 2 upper end of outer tube,
It pushes central tube 3 to move up behind 3 upper surface of central tube and 1 lower end face contact of top connection by auxiliary tool, shear pin is installed
203。
During field operation is implemented, according to Fig. 1, injection well pipe column vibration damping abrasionproof compensator and method are connected in water injection string
After going into the well, to be beaten in water injection string hydraulic, central tube 3 will move down under the action of hydraulic pressure difference, and shear pin 203 is cut power cutting,
Central tube 3 is displaced downwardly to the 202 upper end face contact of positioning step with outer tube 2, at this time 3 annular groove of central tube, 302 position and compensation
4 rectangle closing piece hole 402 of pipe is corresponding, and compensation pipe 4 moves down under tubing string gravity, and closing piece 6 slides onto 3 annular of central tube inwardly
In groove 302, compensation pipe 4 continues to move down compensation water injection string axial strain, while bar shaped leaf spring 5 outwardly protrudes, and touches note
Well casing constitutes elastic righting structure, prevents water injection string and casing from contacting firmly, improves stress and is driven environment, reduces friction
Abrasion.
The foregoing is merely presently preferred embodiments of the present invention, non-to limit the scope of the patents of the invention, other are with this
The equivalence changes of patent of invention spirit should all belong to the scope of the patents of the invention.
Claims (1)
1. a kind of injection well pipe column vibration damping abrasionproof compensator, including outer tube, central tube, which is characterized in that further include compensation pipe, item
Shape leaf spring, interstage sleeve, the central tube are mounted on outer tube bore, and the compensation pipe is installed between central tube and outer tube in annular space,
The interstage sleeve is connected to outer tube lower end, and the bar shaped leaf spring setting is managed between outer tube in annular space in compensation, the bar shaped leaf spring
Upper end is fixed on the outside of compensation pipe, and lower end is then connected to interstage sleeve upper end, and the outer tube side is equipped with axial elongated rectangular holes,
Compensation pipe can pull downward on bar shaped leaf spring make bar shaped plate-shaped spring bends processus aboralis for elongated rectangular holes outside；The bar shaped leaf spring is compensating
Guan Shangwei is evenly equipped with multiple, and the elongated rectangular holes on the outer tube are equally evenly equipped with quantity identical with bar shaped leaf spring, stripe board
Spring and elongated rectangular holes correspond；Opened up on the compensation pipe it is radial be used to place carve type closing piece carve type closing piece hole, institute
It states to offer on the inside of interstage sleeve and corresponds to carving type closing piece hole and the annular groove for carving the entrance of type closing piece can be made；
The central tube lower outside also is provided with corresponding to carving type closing piece hole and can make the annular groove for carving the entrance of type closing piece；
Described carve on the outside of in type closing piece is arc-shaped, lower end outside chamfering, and chamfering radial dimension is to carve type closing piece radial thickness；
The compensation pipe lower part is axially evenly distributed with 4 or 6 and carves type closing piece hole, and the compensation pipe upper end is equipped with positioning step, prevents
Bar shaped leaf spring moves up, and the bar shaped leaf spring is arch, and bar shaped leaf spring upper end is outer in compensation pipe with counterbore pin fastener
Side, lower end are fastened on outer tube with screw, and ring-shaped step is equipped on the inside of the outer tube upper end, and ring-shaped step is equipped with radial screw thread
Hole, threaded hole install shear pin, and shear pin centre of location pipe axial position, the central tube upper outside is equipped with a step, with outer tube
Ring-shaped step it is corresponding, the outer tube upper end connects top connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710251281.1A CN108222857B (en) | 2017-04-17 | 2017-04-17 | A kind of injection well pipe column vibration damping abrasionproof compensator and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710251281.1A CN108222857B (en) | 2017-04-17 | 2017-04-17 | A kind of injection well pipe column vibration damping abrasionproof compensator and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108222857A CN108222857A (en) | 2018-06-29 |
| CN108222857B true CN108222857B (en) | 2019-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710251281.1A Active CN108222857B (en) | 2017-04-17 | 2017-04-17 | A kind of injection well pipe column vibration damping abrasionproof compensator and method |
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| CN (1) | CN108222857B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120761A (en) * | 2020-03-03 | 2020-05-08 | 程思哲 | Anti-seismic flexible interface and working method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2551763Y (en) * | 2002-05-22 | 2003-05-21 | 中国石化胜利油田有限公司海洋石油开发公司 | Sea water injection pipeline compensator |
| WO2007031723A3 (en) * | 2005-09-14 | 2007-05-31 | Petrowell Ltd | Packer |
| CN201661268U (en) * | 2010-01-05 | 2010-12-01 | 李垂忠 | Compensation type pilot-operated water injection packer |
| CN103075135A (en) * | 2013-01-10 | 2013-05-01 | 中国石油天然气股份有限公司 | Compensator for water injection pipe |
| RU2547029C1 (en) * | 2014-04-15 | 2015-04-10 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | System of water injection into injectors |
-
2017
- 2017-04-17 CN CN201710251281.1A patent/CN108222857B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2551763Y (en) * | 2002-05-22 | 2003-05-21 | 中国石化胜利油田有限公司海洋石油开发公司 | Sea water injection pipeline compensator |
| WO2007031723A3 (en) * | 2005-09-14 | 2007-05-31 | Petrowell Ltd | Packer |
| CN201661268U (en) * | 2010-01-05 | 2010-12-01 | 李垂忠 | Compensation type pilot-operated water injection packer |
| CN103075135A (en) * | 2013-01-10 | 2013-05-01 | 中国石油天然气股份有限公司 | Compensator for water injection pipe |
| RU2547029C1 (en) * | 2014-04-15 | 2015-04-10 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | System of water injection into injectors |
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| Publication number | Publication date |
|---|---|
| CN108222857A (en) | 2018-06-29 |
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