CN104358536B - A kind of speed tubing string coiled tubing hanger - Google Patents
A kind of speed tubing string coiled tubing hanger Download PDFInfo
- Publication number
- CN104358536B CN104358536B CN201410629076.0A CN201410629076A CN104358536B CN 104358536 B CN104358536 B CN 104358536B CN 201410629076 A CN201410629076 A CN 201410629076A CN 104358536 B CN104358536 B CN 104358536B
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- CN
- China
- Prior art keywords
- mesopore
- coiled tubing
- middle casing
- slips
- upper shell
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- 238000007789 sealing Methods 0.000 claims abstract description 29
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 239000000725 suspension Substances 0.000 claims abstract description 9
- 241000239290 Araneae Species 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipe Accessories (AREA)
- Supports For Pipes And Cables (AREA)
Abstract
nullThe present invention relates to a kind of speed tubing string coiled tubing hanger,Including coiled tubing、I-shaped flange、Upper slips assembly、Lower slips assembly、Upper shell、Middle casing and lower house，Described upper shell、Middle casing and lower house all offer the mesopore of up/down perforation，Described I-shaped flange is fixedly installed on the top of described upper shell，Described coiled tubing sequentially passes through described I-shaped flange、Upper shell、Middle casing and the mesopore of lower house，Described upper slips assembly is connected on the mesopore inwall of described upper shell，Described lower slips assembly is positioned at the mesopore of described middle casing，On the mesopore inwall of described middle casing、Described suspension is supported to be fixedly installed connecting leg sealing group below set，On the mesopore inwall of described middle casing and lower house、The lower section of described connecting leg sealing group is provided with at least one secondary driving piston，Described middle casing with the sidewall of lower house are respectively equipped with and connect the upper hydraulic fluid port of described driving piston and lower hydraulic fluid port.Provide the benefit that and can hang coiled tubing etc..
Description
Technical field
The present invention relates to a kind of coiled tubing speed tubing string operation auxiliary equipment, specifically a kind of speed tubing string coiled tubing hanger.
Background technology
Exploiting the intermediary and later stages at water-producing gas well, owing to the decline of payzone pressure, the water yield increase, output water can not be discharged in time, so that gas well yield reduces, even occurs killing well.Coiled tubing speed tubing string water drainage-gas recovery technology technology be in former well under insufficient balance condition under enter the less oil pipe of diameter and hang on well head, captured area is risen by reducing gas, according to fluid mechanics principle, fluid velocity in relatively rill bulk area increases, the carrying capacity of production fluid is greatly enhanced by high velocity air, can effectively slow down the time of gas well water breakthrough.This technology has that the engineering time is short, volume increase instant effect, production cycle length and avoid kill-job to advantages such as stratum damage；Coiled tubing speed tubing string production technology is the diameter 1 of certain design length～the coiled tubing of 2 inches to be lowered in original production tubing string with special coiled tubing speed tubing string hanger, forming new flow string to produce, coiled tubing speed pipe string technology can play an important role in the increasing both production and income in gas well later stage.
But problems with occurs in the coiled tubing speed tubing string operation of region, high pressure gas field:
Coiled tubing speed tubing string hanger cannot seal bottom pressure, cannot realize sealing at coiled tubing speed tubing string hanger annular space, leave hidden danger for job safety.
Coiled tubing speed tubing string hanger cannot realize hanging the function of oil pipe；Coiled tubing upward sliding under bottom pressure effect occurs, it is impossible to implement continuous oil pipe operation technique, and leave hidden danger for well head safe operation.
Summary of the invention
The technical problem to be solved is to provide the outer annular space of a kind of coiled tubing that can seal in coiled tubing speed tubing string operation process, hangs the speed tubing string coiled tubing hanger of coiled tubing, safe and reliable.
nullThe technical scheme is that a kind of speed tubing string coiled tubing hanger，Including coiled tubing and I-shaped flange，Also include upper slips assembly、Lower slips assembly、Upper shell、Middle casing and lower house，Described upper shell、Middle casing and lower house is the most vertically arranged and all offers the mesopore of up/down perforation，Described I-shaped flange、Upper shell、The mesopore of middle casing and lower house is the most just to setting，Described I-shaped flange is fixedly installed on the top of described upper shell，And sealed by sealing gasket，The mesopore of described I-shaped flange and the mesopore of described upper shell are just to setting，Described coiled tubing sequentially passes through described I-shaped flange from the top down、Upper shell、Middle casing and the mesopore of lower house，And stretch out described lower house，In the mesopore of described I-shaped flange、The upper end of described coiled tubing is provided with secondary seal bag，In the mesopore of described I-shaped flange、Described secondary seal bag be arranged over clamp nut，Described secondary seal bag is compressed by described clamp nut and is sealed the upper end of described coiled tubing；
nullDescribed upper slips assembly is connected on the mesopore inwall of described upper shell，And be socketed on described coiled tubing，The sidewall of described upper shell is provided with the first jackscrew group of the mesopore stretching into described upper shell，The end conical surface of described first jackscrew group holds out against with the upper end-face edge of described upper slips assembly，The mesopore top circumference of described middle casing offers cannelure，The inwall of described cannelure is fixedly installed suspension and supports set，Described lower slips assembly is connected to described suspension and supports that set is interior，And be socketed on described coiled tubing，On the mesopore inwall of described middle casing、Described suspension is supported to be fixedly installed connecting leg sealing group below set，In the mesopore of described middle casing、Circumferentially fixed below described connecting leg sealing group it is provided with sealing group support set，On the mesopore inwall of described middle casing and lower house、The lower section of described sealing group support set is fixedly installed at least one secondary driving piston，Described middle casing with the sidewall of lower house are respectively equipped with and connect the upper hydraulic fluid port of described driving piston and lower hydraulic fluid port，The sidewall of described lower house is provided with the second jackscrew group of the mesopore stretching into described lower house，The end conical surface of described second jackscrew group holds out against with the lower edge of described driving piston.
The invention has the beneficial effects as follows:
1, described connecting leg sealing group is upwards compressed by described driving piston, seal the outer annular space of described coiled tubing, operate described second jackscrew group simultaneously and lock described driving piston, keep the sealing of the outer annular space to described coiled tubing, sealing reliability is high, avoid the oil and gas leakage problem during oil and gas gathering, safe and reliable.
2, by hanging described coiled tubing towards contrary upper slips assembly and lower slips assembly, avoid described coiled tubing speed tubing string operation process is slided up and down by bottom pressure and the effect of weight of described coiled tubing, coiled tubing speed tubing string operation technique can be implemented smoothly, it is ensured that the safety of shaft mouth operation.
3, economical and practical, use the present invention that the producing well such as high pressure, high hydrogen sulfide can be made to realize stimulation work in the case of no killing well, be greatly saved production cost, decrease the production operation time, saved human cost, improve production efficiency simultaneously.
On the basis of technique scheme, the present invention can also do following improvement.
nullFurther，To the suspension of described coiled tubing and ensure that it hangs reliability in view of realizing described upper slips assembly and lower slips assembly，Described upper slips assembly and lower slips assembly are by slip spider、Slips、Support screw、Guider screw、Closure screws and slips lock-screw composition，Described slip spider is made up of half slip spider of two block-shaped consistent size，Two and half slip spiders connect by described closure screws is fixing，Described slips is arranged on the inside of described slip spider，Described support screw is fixed through side wall upper part and the described slips of described slip spider and is connected，Gathering sill is offered in the middle part of the sidewall of described slip spider，Described guider screw is positioned at described gathering sill，And fix through sidewall and the described slips of described slip spider and to be connected，Described slips lock-screw is through the sidewall bottom of described slip spider，And upwards hold out against described slips.
Further, it is contemplated that ensure that the reliability that described I-shaped flange is fixing with described upper shell, described I-shaped flange and upper shell connect by the first studs of band nut is fixing.
Further, it is contemplated that being easy to the present invention and connect corollary equipment (external equipment of the fixing present invention), the top of described I-shaped flange is vertically fixedly installed the second studs of many band nuts.
Further, it is contemplated that promote the reliability that described coiled tubing upper end is sealed further, the top of described I-shaped flange, described clamp nut are socketed with sealing ring.
Further, it is contemplated that ensure that the reliability that described upper shell is fixing with described middle casing, described upper shell and middle casing connect by soket head cap screw is fixing.
Further, it is contemplated that ensure that the reliability that described middle casing is fixing with described lower house, described middle casing and lower house connect by the 3rd studs of band nut is fixing.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of the present invention；
Fig. 2 is the structure sectional view of upper slips assembly of the present invention and lower slips assembly；
Fig. 3 is upper slips assembly of the present invention and the structural representation of lower slips assembly.
In accompanying drawing, the list of parts representated by each label is as follows:
1, second studs, 2, sealing ring, 3, clamp nut, 4, secondary seal bag, 5, first studs, 6, I-shaped flange, 7, sealing gasket, 8, soket head cap screw, 9, first jackscrew group, 10, upper shell, 11, upper slips assembly, 12, lower slips assembly, 13, hang and support set, 14, connecting leg sealing group, 15, sealing group support set, 16, middle casing, 17, drive piston, 17-1, upper hydraulic fluid port, 17-2, lower hydraulic fluid port, 18, second jackscrew group, 19, 3rd studs, 20, lower house, 21, coiled tubing, 22, slip spider, 23, slips, 24, support screw, 25, guider screw, 26, slips lock-screw, 27, closure screws.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, example is served only for explaining the present invention, is not intended to limit the scope of the present invention.
nullAs shown in Figure 1，A kind of speed tubing string coiled tubing 21 hanger，Including coiled tubing 21 and I-shaped flange 6，Also include upper slips assembly 11、Lower slips assembly 12、Upper shell 10、Middle casing 16 and lower house 20，Upper shell 10、Middle casing 16 and lower house 20 are the most vertically arranged and all offer the mesopore of up/down perforation，I-shaped flange 6、Upper shell 10、The mesopore of middle casing 16 and lower house 20 is the most just to setting，I-shaped flange 6 is fixedly installed on the top of upper shell 10，And sealed by sealing gasket 7，The mesopore of the mesopore of I-shaped flange 6 and upper shell 10 is just to setting，Coiled tubing 21 sequentially passes through I-shaped flange 6 from the top down、Upper shell 10、Middle casing 16 and the mesopore of lower house 20，And stretch out lower house 20，In the mesopore of I-shaped flange 6、The upper end of coiled tubing 21 is provided with secondary seal bag 4，In the mesopore of I-shaped flange 6、Secondary seal bag 4 be arranged over clamp nut 3，Secondary seal bag 4 compresses and seals the upper end of coiled tubing 21 by clamp nut 3；
nullUpper slips assembly 11 is connected on the mesopore inwall of upper shell 10，And be socketed on coiled tubing 21，The sidewall of upper shell 10 is provided with the first jackscrew group 9 of the mesopore stretching into upper shell 10，The end conical surface of the first jackscrew group 9 holds out against with the upper end-face edge of upper slips assembly 11，The mesopore top circumference of middle casing 16 offers cannelure，The inwall of cannelure is fixedly installed suspension and supports set 13，Lower slips assembly 12 is connected to hang in supporting set 13，And be socketed on coiled tubing 21，The distance controlling of the opposing end surface of upper slips assembly 11 and lower slips assembly 12 is between 40～60mm，On the mesopore inwall of middle casing 16、Hang and support to be fixedly installed connecting leg sealing group 14 below set 13，In the mesopore of middle casing 16、Circumferentially fixed below connecting leg sealing group 14 it is provided with sealing group support set 15，On the mesopore inwall of middle casing 16 and lower house 20、The lower section of sealing group support set 15 is fixedly installed two secondary driving pistons 17，Middle casing 16 with the sidewall of lower house 20 are respectively equipped with and connect the upper hydraulic fluid port 17-1 and lower hydraulic fluid port 17-2 driving piston 17，The sidewall of lower house 20 is provided with the second jackscrew group 18 of the mesopore stretching into lower house 20，The end conical surface of the second jackscrew group 18 holds out against with the lower edge driving piston 17.
Such as Fig. 1, shown in Fig. 2 and Fig. 3, in the present embodiment, upper slips assembly 11 and lower slips assembly 12 are by slip spider 22, slips 23, support screw 24, guider screw 25, closure screws 27 and slips lock-screw 26 form, slip spider 22 is made up of half slip spider of two block-shaped consistent size, two and half slip spiders connect by closure screws 27 is fixing, slips 23 is arranged on the inside of slip spider 22, support that screw 24 is fixed through the side wall upper part of slip spider 22 with slips 23 to be connected, gathering sill is offered in the middle part of the sidewall of slip spider 22, guider screw 25 is positioned at gathering sill, and fix through sidewall and the slips 23 of slip spider 22 and to be connected, slips lock-screw 26 is through the sidewall bottom of slip spider 22, and upwards hold out against slips 23.I-shaped flange 6 and upper shell 10 connect by the first studs 5 of band nut is fixing.The top of I-shaped flange 6 is vertically fixedly installed the second studs 1 of many band nuts.It is socketed with sealing ring 2 on the top of I-shaped flange 6, clamp nut 3.Upper shell 10 and middle casing 16 connect by soket head cap screw 8 is fixing.Middle casing 16 and lower house 20 connect by the 3rd studs 19 of band nut is fixing.
Operation principle:
Suppressed by Hydraulic Station downward hydraulic fluid port 17-2, driving piston 17 is made upwards to compress connecting leg sealing group 14, seal the outer annular space of coiled tubing 21, and operate the second jackscrew group 18 locking driving piston 17, keep the sealing of the outer annular space of coiled tubing 21 is wanted depressurization, the second jackscrew group 18 can be unclamped, and suppressed by Hydraulic Station upwards hydraulic fluid port 17-1.When secondary seal bag 4 is not switched on, bottom pressure is to coiled tubing 21 thrust upwards more than the deadweight of the coiled tubing 21 hung, and coiled tubing 21 upward sliding, at this moment the slips 23 at upper slips assembly 11 hangs coiled tubing 21 thrust upwards under acting on；When secondary seal bag 4 is opened, the dynamic balance of lower section on coiled tubing 21, at this moment under the effect of coiled tubing 21 deadweight, coiled tubing 21 slide downward, the slips 23 of lower slips assembly 12 works, and stops coiled tubing 21 slide downward and hangs the deadweight of coiled tubing 21.Thus i.e. seal the outer annular space of coiled tubing 21, coiled tubing 21 can be hung again up and down, it is ensured that being normally carried out of coiled tubing 21 speed tubing string operation.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (7)
1. a speed tubing string coiled tubing hanger, including coiled tubing (21) and I-shaped flange (6),
It is characterized in that: also include upper slips assembly (11), lower slips assembly (12), upper shell (10),
Middle casing (16) and lower house (20), described upper shell (10), middle casing (16) and under
Housing (20) is the most vertically arranged and all offers the mesopore of up/down perforation, described I-shaped method
The mesopore of blue (6), upper shell (10), middle casing (16) and lower house (20) is the most right
Arranging, described I-shaped flange (6) is fixedly installed on the top of described upper shell (10), and by close
Packing (7) seals, and the mesopore of described I-shaped flange (6) is the most right with the mesopore of described upper shell (10)
Arranging, described coiled tubing (21) sequentially passes through described I-shaped flange (6), upper shell from the top down
(10), middle casing (16) and the mesopore of lower house (20), and stretch out described lower house (20),
The mesopore of described I-shaped flange (6) is interior, the upper end of described coiled tubing (21) is provided with secondary seal bag
(4) in the mesopore of, described I-shaped flange (6), described secondary seal bag (4) be arranged over pressure
Jack panel (3), described secondary seal bag (4) compresses and seals institute by described clamp nut (3)
State the upper end of coiled tubing (21)；
Described upper slips assembly (11) is connected on the mesopore inwall of described upper shell (10), and is socketed
On described coiled tubing (21), the sidewall of described upper shell (10) is provided with and stretches into described upper shell
(10) the first jackscrew group (9) of mesopore, the end conical surface of described first jackscrew group (9) is with described
The upper end-face edge of upper slips assembly (11) holds out against, and the mesopore top circumference of described middle casing (16) is opened
Be provided with cannelure, the inwall of described cannelure is fixedly installed suspension support set (13), described under
Slips assembly (12) is connected to described suspension and supports that set (13) is interior, and is socketed in described coiled tubing (21)
On, fix on the mesopore inwall of described middle casing (16), below described suspension support set (13) and set
Being equipped with connecting leg sealing group (14), the mesopore of described middle casing (16) is interior, described connecting leg sealing group (14)
Lower section is circumferentially fixed is provided with sealing group support set (15), described middle casing (16) and lower house (20)
Mesopore inwall on, the lower section of described sealing group support set (15) is fixedly installed at least one secondary driving and lives
Plug (17), is respectively equipped with on described middle casing (16) with the sidewall of lower house (20) and connects institute
State upper hydraulic fluid port (17-1) and lower hydraulic fluid port (17-2), the described lower house (20) driving piston (17)
Sidewall be provided with the second jackscrew group (18) of the mesopore stretching into described lower house (20), described second
The end conical surface of jackscrew group (18) holds out against with the lower edge of described driving piston (17).
A kind of speed tubing string coiled tubing hanger the most according to claim 1, it is characterised in that:
Described upper slips assembly (11) and lower slips assembly (12) by slip spider (22), slips (23),
Support screw (24), guider screw (25), closure screws (27) and slips lock-screw (26)
Composition, described slip spider (22) is made up of half slip spider of two block-shaped consistent size, two and half slips
Seat connects by described closure screws (27) is fixing, and described slips (23) is arranged on described slip spider (22)
Inside, described support screw (24) is through side wall upper part and the described slips of described slip spider (22)
(23) fixing connection, offers gathering sill, described guiding in the middle part of the sidewall of described slip spider (22)
Screw (25) is positioned at described gathering sill, and passes the sidewall of described slip spider (22) and described slips
(23) fixing connection, described slips lock-screw (26) is through at the bottom of the sidewall of described slip spider (22)
Portion, and upwards hold out against described slips (23).
A kind of speed tubing string coiled tubing hanger the most according to claim 1 and 2, its feature
It is: described I-shaped flange (6) and the upper shell (10) the first studs (5) by band nut
Fixing connection.
A kind of speed tubing string coiled tubing hanger the most according to claim 3, it is characterised in that:
The top of described I-shaped flange (6) is vertically fixedly installed second studs (1) of many band nuts.
A kind of speed tubing string coiled tubing (21) hanger the most according to claim 4, it is special
Levy and be: on the top of described I-shaped flange (6), described clamp nut (3), be socketed with sealing ring (2).
A kind of speed tubing string coiled tubing hanger the most according to claim 1 and 2, its feature
It is: described upper shell (10) and middle casing (16) connect by soket head cap screw (8) is fixing.
A kind of speed tubing string coiled tubing hanger the most according to claim 4, it is characterised in that:
Described middle casing (16) and lower house (20) are fixed by the 3rd studs (19) of band nut
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410629076.0A CN104358536B (en) | 2014-11-10 | 2014-11-10 | A kind of speed tubing string coiled tubing hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410629076.0A CN104358536B (en) | 2014-11-10 | 2014-11-10 | A kind of speed tubing string coiled tubing hanger |
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| Publication Number | Publication Date |
|---|---|
| CN104358536A CN104358536A (en) | 2015-02-18 |
| CN104358536B true CN104358536B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410629076.0A Active CN104358536B (en) | 2014-11-10 | 2014-11-10 | A kind of speed tubing string coiled tubing hanger |
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|---|---|---|---|---|
| US5092400A (en) * | 1989-06-08 | 1992-03-03 | Fritz Jagert | Coiled tubing hanger |
| CN201250626Y (en) * | 2008-09-09 | 2009-06-03 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Wellhead suspension device adopting coiled tubing as production string |
| CN203050597U (en) * | 2013-01-15 | 2013-07-10 | 宝鸡市赛孚石油机械有限公司 | Suspension device of coiled tubing |
| CN203476263U (en) * | 2013-08-20 | 2014-03-12 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Coiled tubing speed tubular column hanger |
| CN203603824U (en) * | 2013-12-11 | 2014-05-21 | 中国石油集团川庆钻探工程有限公司 | Double-slip type well mouth coiled tubing hanging device |
| CN204225813U (en) * | 2014-11-10 | 2015-03-25 | 杰瑞能源服务有限公司 | A kind of speed tubing string coiled tubing hanger |
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2014
- 2014-11-10 CN CN201410629076.0A patent/CN104358536B/en active Active
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| CN104358536A (en) | 2015-02-18 |
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