CN2063165U - Compensator for water-injecting pipe string - Google Patents
Compensator for water-injecting pipe string Download PDFInfo
- Publication number
- CN2063165U CN2063165U CN 90200906 CN90200906U CN2063165U CN 2063165 U CN2063165 U CN 2063165U CN 90200906 CN90200906 CN 90200906 CN 90200906 U CN90200906 U CN 90200906U CN 2063165 U CN2063165 U CN 2063165U
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- CN
- China
- Prior art keywords
- telescoping tube
- connector
- lock dog
- piston
- packer
- 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.)
- Withdrawn
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Abstract
The utility model relates to a compensator for a water-injecting pipe string used to match with water injecting wells and water injecting pipe strings. The utility model can prevent a packer automatically unsealing and extend the service life of the packer. The compensator for the water-injecting pipe string is composed of an upper part, a lower part and a middle control part. The upper part is axially sheathed in the lower part, and the middle control part is axially sheathed on the exterior of the lower part. The upper part and the lower part can axially make opposite retraction, and the middle control part can make the compensator for the water-injecting pipe string store definite retractable length before the packer is sealed. After the packer is sealed, the stored length can be released. As a consequence, the retractable quantity of the pipe string can be compensated, and thus, the influent for the packer by the retraction of the pipe string can be avoided.
Description
The utility model relates to a kind of instrument that water injection well prevents the automatic deblocking of packer that is used for, and particularly is honored as a queen and can extends automatically and shorten to reduce a kind of instrument of water injection string contractility to the influence in packer life-span with the water injection pressure fluctuation when the water injection packer seat.
In the prior art, during the water injection well base sealed packer, it is the pressure of in oil pipe, just spraining, under this pressure effect, packing element axial compression and Seal Oil cover annular space, simultaneously packer self carries out self-locking and relative fixed at an ad-hoc location and the seat envelope, and in the present envelope process, the axial tension that the tubing string bottom produces will make tubing string elongation certain-length; And when zonal testing, oil pressure changed or stop annotating anti-flushing well, because oil pressure descends, then tubing string shrank resilience again, packer this moment relative fixed and can't moving.So when oil pressure changed or stops annotating, the tubing string screen resilience often made packer be subjected to the effect of axial stress alternation, and the packer deblocking was lost efficacy, and has shortened the application life of packer.
The purpose of this utility model is to provide a kind of water injection string expansion loop, it and water injection string are used, can when causing tubing string flexible, the water injection pressure fluctuation compensate the stroke of tubing string automatically, make packer be not subjected to the tubing string contractility influence and all the time relative fixed prevent the packer deblocking at a certain ad-hoc location, prolong its application life.
The utility model is by top, lower part and middle control section are formed, the draw ring of telescoping tube bottom, top based on interior telescoping tube and in being threaded onto, the top and the top connection of interior telescoping tube spin, beyond the lower part screw thread of telescoping tube and top and outer telescoping tube bottom spin and connector that the screw thread on bottom and outer adapter sleeve top spins to reach outer adapter sleeve be main body, the bottom of outer adapter sleeve is connected with lower contact with screw thread, main points of the present utility model are, top axially is placed among the lower part, two parts are sliding-contact and can relatively move in the axial direction up and down, draw ring is in the bottom surface of connector, the lower contact upper face, in the space that outer adapter sleeve inner surface and interior telescoping tube external surface are surrounded, its axial stroke of the length tubing string that promptly expansion loop compensated for this reason movably in this space, and with piston, shear pin and lock dog are the middle control section that main body is formed, its piston is placed in the external surface on outer telescoping tube bottom and connector top in the axial direction with sliding type, shear pin is fixed piston and connector and is made the screw-on place of piston relative fixed in outer telescoping tube and connector, with on the cross section of the contacted outer telescoping tube part of piston inner surface the lock dog hole is arranged, and interior telescoping tube has corresponding lock dog groove, the inner surface of piston is locked in lock dog in lock dog hole and the lock dog groove and inside and outside telescoping tube can not axially relatively moved, when shear pin is connected head and after piston cuts off, then piston can be up and make lock dog can withdraw from lock dog groove and lock dog hole, and this moment, inside and outside telescoping tube then can move to axial.All there is logical pressure hole at inside and outside telescoping tube position between bottom, lock dog hole and connector upper surface so that the pressure in the tubing string can be delivered between piston and the connector.This expansion loop is installed in the water injection well segment distance position on upper level eccentric injection mandrel or the packer, its top connection is connected with the top tubing string, lower contact is connected with the bottom tubing string, during base sealed packer, the pressure of just spraining in the oil pipe, under this oil pressure effect, when whole tubing string extends, the tubing string internal pressure is delivered between piston and the connector through the logical pressure hole on the inside and outside telescoping tube, after the packer set, continuing pressurization makes shear pin be cut off (shear pin is designed to its pressure reduction when cutting off pressure reduction greater than packer set) by piston and connector, at this moment, piston stroking upward, make lock dog can withdraw from lock dog hole and lock dog groove, inside and outside telescoping tube just can be in axially relative elongation or shortening, and the length of its relative elongation or shortening is by the connector of lower part and the axial length between the lower contact, the draw ring position and the length that can relatively move up and down and deciding thereof betwixt.Therefore, after the packer set, when tubing string was flexible, two parts up and down of expansion loop were also flexible relatively, just offset the stroke of tubing string, avoided the flexible influence to packer of tubing string.
Below in conjunction with accompanying drawing the utility model and enforcement thereof are elaborated.
Fig. 1 is a structural representation of the present utility model.Wherein: 1 is top connection, and 2,3,6,8 and 11 is " O " RunddichtringO, and 4 is outer telescoping tube, and 5 is interior telescoping tube, and 7 is lock dog, and 9 is piston, and 10 is shear pin, and 12 is connector, and 13 is outer adapter sleeve, and 14 is draw ring, and 15 are lower contact.
Top of the present utility model is made up of top connection 1, interior telescoping tube 5 and draw ring 14, the top of interior telescoping tube 5 spins with the bottom of screw thread and top connection 1, its underpart and draw ring 14 usefulness screw threads spin, and the one cross section have logical press the hole with outside in corresponding logical pressure hole together makes on the telescoping tube 4 pressure in the telescoping tube 5 can be delivered between piston 9 and the connector 12, the logical number in hole of pressing depends on the needs, generally have four respectively and get final product, interior telescoping tube 5 is positioned to lead on the cross section of pressing top, hole the lock dog groove.The lower part is made up of outer telescoping tube 4, connector 12, outer adapter sleeve 13 and lower contact 15, the bottom of outer telescoping tube 4 spins with screw thread and connector 12 tops, the bottom of connector 12 spins with screw thread with the top of outer adapter sleeve 13, the bottom of outer adapter sleeve 13 spins with screw thread and lower contact 15, on the outer telescoping tube 4 the lock dog hole is arranged, its number generally has getting final product of four symmetries.Middle control section is by piston 9, lock on the outer telescoping tube 4 the lock dog hole and on the telescoping tube 5 lock dog 7 and the shear pin 10 in the corresponding lock dog groove form, shear pin 10 is fixed as one piston 9 and connector 12, and lock dog 7 by piston 9 and outer telescoping tube 4 contacted inner surfaces it is locked in inside and outside in the lock dog groove and lock dog hole on the telescoping tube, they can not be moved to axial, the lock dog hole is positioned on the cross section of telescoping tube 4 parts outside the inner surface of piston 9 and connector 12 fixing back and piston 9 by shear pin is contacted, and the logical hole of pressing is on the cross section between lock dog hole and connector 12 upper surfaces, on the interior telescoping tube 5 the selected of the position of corresponding logical pressure hole and lock dog groove is in the particular location in the axial space between connector 12 bottoms and lower contact 15 upper surfaces and decides according to draw ring 14 in the design, in the present embodiment is to be in the upper surface place of lower contact 15 and to determine their position by draw ring 14.Top axially is placed among the lower part, can relatively move in the axial direction between two parts, the piston 9 of middle control section axially is placed in the junction of outer telescoping tube 4 and connector 12, shear pin 10 is in the groove or hole of piston 9 outside screw-ins or embedding connector 12 correspondences, make piston 9 and connector 12 relative fixed, and by lock dog 7 and piston 9 inside and outside telescoping tube is locked, they temporarily can not be moved to axial.
The utility model that installs by above structural group, it is sliding-contact up and down between two parts, draw ring is between the bottom surface and lower contact 15 upper surfaces of connector 12 of lower part, piston 9 also is sliding-contact with connector 12, promptly all can move to axial between two parts and between lower part and the middle control section up and down, just they temporarily can not be relatively moved their relative fixed respectively, the static structure of Here it is this expansion loop owing to lock dog 7 and shear pin 10.At this moment, draw ring 14 between connector 12 and lower contact 15 axially movable length and draw ring 14 determining positions betwixt the stroke of the compensable tubing string stored of this expansion loop, and their differences in all can using according to reality require to design.
Be its dynamic structure below.
The water injection string expansion loop that will be in static structure is installed in the water injection well, that is: generally it is installed in the water injection well a segment distance position on upper level eccentric injection mandrel or the packer, its top connection 1 is connected with the top tubing string, and lower contact 15 is connected with the bottom tubing string.During base sealed packer, the pressure of just spraining in the tubing string, when reaching packer set pressure reduction, packer axial compression and Seal Oil cover annular space, packer self carries out self-locking and relative fixed in a certain position and the seat envelope simultaneously.In this process, will extend under the effect of the present envelope of tubing string pressure reduction.After the packer set, continue pressurization make shear pin 10 be connected 12 and piston 9 cut off (shear pin 10 be designed to its cut off pressure reduction get final product) greater than the seat envelope pressure reduction of packer in the shearing force that axially forms, promptly, shear pin 10 is fixed piston 9 and connector 12 no longer, then piston 9 is axially up with relative connector 12 under pressure, the lock dog 7 in the lock dog groove and lock dog hole can withdraw to the space between piston 9 and the connector 12 on the inside and outside telescoping tube and be locked to, and interior telescoping tube 5 reaches outer telescoping tube 4 and becomes and can move to axial by not moving to axial.Thereby, when the pressure reduction, during the tubing string retraction, interior telescoping tube 5 can move down to axial, outer telescoping tube 4 and bottom tubing string and packer etc. then relatively still are in original position and motionless, and the amount of contraction of tubing string is compensated, and packer no longer is subjected to the effect of the screen resilience of tubing string.Present embodiment draw ring 14 is in the upper surface place of lower contact 15 among Fig. 1 in static structure, be after considering packer set, tubing string is relative elongation, and the influence that pressure changes packer mainly is will shrink resilience because of tubing string, promptly in actual production, mainly be that the convergent force of top tubing string produces to the influence of packer.If consider the influence of the elongation of tubing string, only need when expansion loop is in static structure, is designed to make draw ring 14 to be in lower contact 15 upper spaces and gets final product.Owing to all be that form with sliding-contact connects between top, lower part and the middle control section, thereby " O " RunddichtringO 2,3,6,8 and 11 be installed in their junction.
During concrete the installation, suggestion is installed on upper level and compiles 10---20 rice on heart injection well downhole flow regulator or the packer.When being connected, using pipe wrench and block top connection 1, should block lower contact 15 when being connected with the bottom oil pipe with the top tubing string.
The utility model and water filling tubing string are used, and can reduce the fluctuation of pressure in the water injection well to the impact of packer, have prolonged changing the envelope cycle of packer, are that the more satisfactory packer that prevents is separated the instrument of envelope automatically at present.
Claims (5)
1, be used for the water injection string expansion loop that water injection well prevents the automatic deblocking of packer, the top of draw ring by telescoping tube bottom based on interior telescoping tube and in being threaded onto, telescoping tube and top and outer telescoping tube bottom is with screw thread spin the connector that bottom and outer adapter sleeve top spins based on screw thread and the lower part and the middle control section composition of outer adapter sleeve in addition, the bottom of outer adapter sleeve is connected with lower contact with screw thread, it is characterized in that, top axially is placed among the lower part, two parts are sliding-contact and can move to axial up and down, draw ring is in the bottom surface of connector, the lower contact upper surface, in the space that outer adapter sleeve inner surface and interior telescoping tube external surface are surrounded, the logical hole of pressing is all arranged on the inside and outside telescoping tube, with piston, shear pin and lock dog are control section in the middle of main body is formed, its the axis of the piston telescoping tube bottom and connector outer surface of upper and it and connector are fixed outside being placed in sliding type by shear pin, piston places the lock dog hole of outer telescoping tube to reach the lock dog groove of interior telescoping tube lock dog and inside and outside telescoping tube is locked at this moment, after shear pin is cut off, piston can axially be gone up the enforcement lock dog and withdraw from, and inside and outside telescoping tube can move to axial.
2, water injection string expansion loop according to claim 1, it is characterized in that, draw ring by connector bottom surface, lower contact upper surface, outer adapter sleeve inner surface and in the space that surrounded of telescoping tube external surface movably axial length be the stroke of the tubing string that compensated.
3, water injection string expansion loop according to claim 1 is characterized in that, on the cross section of the outer telescoping tube part that is contacted with the piston inner surface after the lock dog hole on the outer telescoping tube is positioned at piston and connector is fixed by shear pin.
4, water injection string expansion loop according to claim 1 is characterized in that, shear pin cut off the pressure reduction of pressure reduction greater than packer set.
According to claim 1 or 3 described water injection string expansion loops, it is characterized in that 5, the logical pressure hole of inside and outside telescoping tube is on a cross section between lock dog hole and the connector upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90200906 CN2063165U (en) | 1990-01-19 | 1990-01-19 | Compensator for water-injecting pipe string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90200906 CN2063165U (en) | 1990-01-19 | 1990-01-19 | Compensator for water-injecting pipe string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2063165U true CN2063165U (en) | 1990-10-03 |
Family
ID=4882621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90200906 Withdrawn CN2063165U (en) | 1990-01-19 | 1990-01-19 | Compensator for water-injecting pipe string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2063165U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942971A (en) * | 2010-09-04 | 2011-01-12 | 李永祥 | Elastic expansion device |
| CN102733760A (en) * | 2012-07-09 | 2012-10-17 | 中国海洋石油总公司 | Constant-pressure releasing and stretching tool capable of preventing interlayer tubular column from creeping for water injection well |
| 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 |
| CN104726685A (en) * | 2015-02-12 | 2015-06-24 | 宁波宝新不锈钢有限公司 | Combustion-supporting air conduit and stainless steel hood-type annealing furnace with same |
| CN104963640A (en) * | 2015-07-22 | 2015-10-07 | 中国石油化工股份有限公司 | Horizontal well coiled tubing lock type hydraulic bit feeding and alarming system |
| CN105089586A (en) * | 2015-08-20 | 2015-11-25 | 中国石油天然气股份有限公司 | Bidirectional balancer and layered water injecting method |
| CN105649586A (en) * | 2016-04-08 | 2016-06-08 | 中国石油化工股份有限公司 | Pressure extension and retraction compensator for water injection tubular column |
| CN108343385A (en) * | 2017-12-29 | 2018-07-31 | 中国石油天然气股份有限公司 | Telescopic device and its processing method and tubing string |
| CN112855098A (en) * | 2021-02-19 | 2021-05-28 | 大庆市天德忠石油科技有限公司 | Water plugging pipe column |
-
1990
- 1990-01-19 CN CN 90200906 patent/CN2063165U/en not_active Withdrawn
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942971B (en) * | 2010-09-04 | 2014-03-26 | 李永祥 | Elastic expansion device |
| CN101942971A (en) * | 2010-09-04 | 2011-01-12 | 李永祥 | Elastic expansion device |
| CN102733760A (en) * | 2012-07-09 | 2012-10-17 | 中国海洋石油总公司 | Constant-pressure releasing and stretching tool capable of preventing interlayer tubular column from creeping for water injection well |
| CN103075135B (en) * | 2013-01-10 | 2015-10-14 | 中国石油天然气股份有限公司 | Compensator for water injection pipe |
| 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 |
| CN104726685A (en) * | 2015-02-12 | 2015-06-24 | 宁波宝新不锈钢有限公司 | Combustion-supporting air conduit and stainless steel hood-type annealing furnace with same |
| CN104726685B (en) * | 2015-02-12 | 2017-03-08 | 宁波宝新不锈钢有限公司 | A kind of comburent air duct and the stainless steel cover type annealing furnace being provided with this comburent air duct |
| CN104963640A (en) * | 2015-07-22 | 2015-10-07 | 中国石油化工股份有限公司 | Horizontal well coiled tubing lock type hydraulic bit feeding and alarming system |
| CN105089586A (en) * | 2015-08-20 | 2015-11-25 | 中国石油天然气股份有限公司 | Bidirectional balancer and layered water injecting method |
| CN105089586B (en) * | 2015-08-20 | 2018-01-05 | 中国石油天然气股份有限公司 | A kind of bidirectional balanced device and layered water injection method |
| CN105649586A (en) * | 2016-04-08 | 2016-06-08 | 中国石油化工股份有限公司 | Pressure extension and retraction compensator for water injection tubular column |
| CN108343385A (en) * | 2017-12-29 | 2018-07-31 | 中国石油天然气股份有限公司 | Telescopic device and its processing method and tubing string |
| CN112855098A (en) * | 2021-02-19 | 2021-05-28 | 大庆市天德忠石油科技有限公司 | Water plugging pipe column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |