CN107489387B - A kind of hydraulic pressure back-off device - Google Patents
A kind of hydraulic pressure back-off device Download PDFInfo
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- CN107489387B CN107489387B CN201710937485.0A CN201710937485A CN107489387B CN 107489387 B CN107489387 B CN 107489387B CN 201710937485 A CN201710937485 A CN 201710937485A CN 107489387 B CN107489387 B CN 107489387B
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- 238000004873 anchoring Methods 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 16
- 210000003746 feather Anatomy 0.000 claims description 10
- 239000011324 bead Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 238000012545 processing Methods 0.000 abstract description 6
- 230000008439 repair process Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Classifications
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- 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
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
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- 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)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a kind of hydraulic pressure back-off devices, including anchoring device, pressue device, power transmission and power output device, anchoring device lower part is arranged to add to the pressue device of pressure, the power output device that hydraulic coupling exports is arranged in the power transmission that the setting of pressue device lower part is transmitted for power, power output device lower part；Compared with prior art, use hydraulic-driven for driving force, with axial line shaft, quick change driving head and rotary power axis for main powered actuation mechanism, axial line shaft and fast driving head are used into split structure, conducive to the processing, replacement and repair of parts, power output is designed using double ratchet wheels group, inside and outside ratchet is mutual indepedent, handle ratchet wheel is not influenced by lower part rotary torque, outer ratchet ensures that the reversing torque occurred does not turn round, ensure that the tool it is reliable for operation with it is safe, output torque is big, easy to operate.
Description
Technical field
The present invention relates to oil exploration equipment field, a kind of specifically hydraulic pressure for high-angle wells and horizontal wells falls
Button tool.
Background technology
In recent years, with the continuous decaying of the rapid development of China's economy and oil-gas field development and non-renewable resources,
In order to alleviate the situation that China's petroleum resources depend on import unduly, domestic each elephant is accelerated the exploration to petroleum resources and is opened
It sends out, in the development process of oil/gas well, especially the oil mining later stage, needs to implement well stimulation, repair operation/volume increase in brill and arrange
During applying, tubing string meets card accident frequent occurrence.Once occurring to meet card accident, deal with and bother very much, increases duty cycle
And cost, severe patient cause pit shaft to scrap.
The common treatment measures of tubing string chance card have following several at present：First, by left-hand screw drill pipe to being carried out by stuck point position
Back-off is handled；Second is that being cut to stuck point position in the way of cutting；The technology third, explosion is released, fourth, planetary gear type
Mechanical reversing tool.In actual operating process, these technologies all have larger limitation.Such as：Left-hand screw drill pipe well site
It does not lay in, needs individually to prepare, production cost and transportation cost are all very high, occupy larger construction site.Torque
It is transmitted from well head to shaft bottom, energy loss is very big while reducing the physical life of drilling rod；Tubing string can be made by the way of cutting
Limitation at destruction, and the problems such as due to space can so that operating process is comparatively laborious；Breakouting pack of dynamite tool is to a certain degree
On solve some site problems, can preferably complete operation of releasing during a back-off operation, but secondary, three times
Etc. being unfavorable for operating very much in follow-up back-off operation engineering；Planetary gear reverse buckling equipment tool, since tool sizes limit, planetary gear
Size all very littles, intensity is relatively low, and the output torque of entire tool is smaller, and the back-off operation that cannot meet high torque is wanted
It asks.Currently, the back-off operation of high-angle wells and horizontal wells is the problem of a urgent need to resolve, research and development are a kind of to be suitable for high angle hole
And the large torque reversing tool of horizontal well seems particularly urgent.
Invention content
The purpose of the present invention aims to solve the problem that above-mentioned deficiency of the prior art, anti-by hydraulic-driven tool bottom
Turn, realize back-off operation, solves that the energy loss that common reversing tool occurs during use at the scene is big, output torque
Small, the problems such as application range is small, complicated for operation, while disclosure satisfy that the back-off operation demand of high-angle wells and horizontal wells.
The technical scheme adopted by the invention to solve the technical problem is that：A kind of hydraulic pressure back-off device, including anchoring device, plus
Pressure device, power transmission and power output device, the anchoring device lower part are arranged to add to the pressurization dress of pressure
It sets, the power transmission that pressue device lower part setting is transmitted for power, the power output device lower part is set
Set the power output device of hydraulic coupling output.
As an optimization, the anchoring device include anchoring top connection, slips cover, central tube, feather key, anchor and fall
Connector is buckled, the anchoring top connection lower part is fixed with spring strut, and the lower end of the spring strut is provided with slips cover, described
Central tube is arranged in the inside of anchoring top connection, slips cover, and central tube upper end and the lower end of anchoring top connection inner via hole pass through spiral shell
Line is attached, and the feather key is located in central tube keyway, and is attached slips by holding screw and is arranged in slips
In cover rectangular through holes, the slips is provided with anchor block hole, and feather key is moved together with central tube in slips cover, institute
The anchoring device stated includes slips and anchor block, and the anchor block is arranged in anchor block hole, tight with tube wall by anchor block at work
Close connection；Central tube lower end, which is connected through a screw thread, is provided with back-off top connection；
As an optimization, the pressue device include valve pocket component, first stage piston group, flow control valve, axial line shaft,
Second piston group, seal pipe, baffle, the valve pocket component lower part are provided with first stage piston group, and the second piston group is set
It sets in the lower part of first stage piston group, the flow control valve is arranged between first stage piston group and second piston group, lives in level-one
Seal pipe and baffle are additionally provided between plug group and second piston group；
As an optimization, the power transmission includes rotary power axis, fast driving head, the axial line shaft
Lower end is fast driving head, the lower end of fast driving head is spring baffle ring, axial line shaft, fast driving head, spring baffle ring
Inside is rotary power axis, and the rotary power axis top is provided with seal head, and seal head is located in rotary power axis upper end
Between surface and seal pipe lower end outer surface by the upper shoulder of rotary power axis clamp spring and rotary power axis upper end inner surface into
Row limit；
As an optimization, the power output device includes two-level spring set, ratchet device and lower contact, the ratchet
Device includes handle ratchet wheel group, outer ratchet I, outer ratchet II, outer ratchet spring and sealing inner joint and lower conversion head, the interior spine
Wheel group is arranged in two-level spring set inside, and handle ratchet wheel group upper end inner surface and lower end inner surface are both provided with spline
Slot is simultaneously used with the spline fitted of rotary power axis lower end outer surface, and the sealing inner joint is arranged in rotary power axis lower end
Inside, the sealing inner joint lower end are provided with lower crossover sub, and the lower crossover sub outer surface is evenly distributed with 4 flowers
Key is coordinated with handle ratchet wheel group spline, and the lower crossover sub lower end is stuck in lower contact endoporus to be connected by screw thread
It connects, the outer surface of the lower crossover sub is disposed with outer ratchet I, outer ratchet II, outer ratchet spring, the outer ratchet I
Lower end is outer ratchet II, and the lower end of outer ratchet II is outer ratchet spring, the lower end that the outer ratchet spring passes through outer ratchet II
Face and the upper surface of lower contact are limited.
As an optimization, the inner surface of the slips is provided with zigzag card slot, the sawtooth with the lower external face of central tube
It is matched in shape card slot, the outer surface of the slips is boss cylindrical surface, is provided on the boss cylindrical surface and uniformly divides
The anchor block hole of cloth.
As an optimization, the valve pocket component includes valve pocket, valve rod gear cap, valve rod and valve plate, the valve pocket and back-off
Top connection is connected through a screw thread, and the valve rod gear cap, valve rod and valve plate are arranged in valve pocket, valve rod gear cap lower end and valve
Bar is threadedly coupled, and the valve plate is arranged between valve rod and valve pocket, and the valve rod is threadedly coupled with first stage piston group.
As an optimization, the first stage piston group includes first stage piston set, first stage piston and connector, the valve rod and
First stage piston is threadedly coupled, and first stage piston set lower part is provided with connector；The connector lower part is provided with axial dynamic
Power axis, the second piston group include second piston set, second piston, and the second piston is located at the interior of second piston set
It portion and is sealed by star sealing ring, the axial line shaft is located at the inside of second piston set and upper end and two
Grade piston bush between be sealed by star sealing ring, between first stage piston and second piston by first stage piston lower end at
Groove is connect with the threaded hole of second piston upper end using screw, and the outer circular bead surface of second piston is interior with axial line shaft upper end
Circular bead surface is attached by screw thread；The first stage piston lower part is provided with seal pipe, passes through between first stage piston and seal pipe
Baffle shoulder is adjusted and limits；The flow control valve is arranged between first stage piston group and second piston group, described
First stage piston lower end inside be attached by screw thread with bulb, the bulb across baffle central through hole, the flow
Control valve spring is located at the outside of bulb and by nut and baffle limiting, the lower end of bulb by shoulder in seal pipe upper end into
Row limit.
As an optimization, the slips cover upper end is designed for shoulder, and the lower half portion of slips cover is provided with equally distributed 3
There is shoulder at the both ends of a rectangular through holes and 3 key groove shape through-holes, rectangular through holes, are respectively arranged on two shoulders and uniformly divide
The tapped through hole of cloth.
As an optimization, it is sealed by O-ring between the central tube and anchoring top connection, slips cover, central tube 3
Middle section be provided with shoulder, the middle section of central tube is provided with equally distributed 2 through-holes, the lower half of central tube 3
Set up separately and be equipped with equally distributed 3 keyways, 2 tapped blind holes are provided in keyway,
As an optimization, equally distributed 26 anchor block holes are provided on the boss cylindrical surface of the slips.
As an optimization, it is provided with equally distributed 4 splines on the second piston, is arranged again on each spline
There are equally distributed 6 through-holes.
As an optimization, the fast driving head upper surface is provided with equally distributed spline, fast driving head it is interior
Portion is provided with equally distributed helicla flute.
As an optimization, the axial line shaft and fast driving head use split structure, be conducive to parts processing,
It replaces and repairs, reduce cost, while carrying out 12CoWC spray coating alloy processing on the contact surface, to reduce friction loss,
It is serious due to rubbing during back-off, easily damage.
The beneficial effects of the invention are as follows：Compared with prior art,
1, a kind of hydraulic pressure back-off device of the invention, uses hydraulic-driven for driving force, with axial line shaft, quick change driving head
It is main powered actuation mechanism with rotary power axis, by the axial line shaft of original integrated design with fast driving head using split type
Structure is conducive to processing, replacement and the repair of parts, cost is reduced, while carrying out thermal spraying treatment on the contact surface, to subtract
Few frictional dissipation, it is serious due to rubbing during back-off, easily damage.
2, the present invention controls the stroke of hydraulic pressure back-off device by valve pocket component, and only need to continue pumping liquid on ground can
Meet the continuous work demand of tool, operation is very easy.
3, the present invention devises flow control valve, convenient for cleaning top of fish, while intraluminal fluid can be discharged when upper lifting pipe post
Body avoids the pollution to well site surrounding enviroment.
4, the present invention is designed using double ratchet wheels group, and inside and outside ratchet is mutual indepedent, and handle ratchet wheel is not by the shadow of lower part rotary torque
Ring, outer ratchet ensures that the reversing torque occurred does not turn round, ensure that the tool it is reliable for operation with it is safe.
Novel hydraulic reverse buckling equipment output torque disclosed by the invention is big, it is easy to operate, have a wide range of application, especially in level
There is big advantage in well and high angle hole.
Description of the drawings
Fig. 1 is hydraulic pressure back-off device structural schematic diagram；
Fig. 2 is the faces A-A schematic cross-section；
Fig. 3 is slips and anchor block structural schematic diagram；
Fig. 4 is ratchet group structural schematic diagram；
Fig. 5 is axial line shaft and fast driving header structure schematic diagram；
1, it is anchored top connection；2, spring strut；3, central tube；4, slips cover；5, feather key；6, slips；7, anchor block；8, it falls
Buckle connector；9, valve rod gear cap；10, valve rod；11, valve pocket；12, valve plate；13, first stage piston set；14, first stage piston；15, even
Connector；16, bulb；17, flow control valve；18, baffle；19, second piston；20, seal pipe；21, second piston set；22, axis
To line shaft；23, seal head；24, rotary power axis；25, fast driving head；26, spring baffle ring；27, two-level spring set；28、
Handle ratchet wheel group；29, sealing inner joint；30, outer ratchet I；31, lower crossover sub；32, outer ratchet II；33, outer ratchet spring；34、
Lower contact.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.Therefore, below to the reality of the present invention provided in the accompanying drawings
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In conjunction with shown in attached drawing 1-5, a kind of hydraulic pressure back-off device, including anchoring device, pressue device, power transmission and dynamic
Power output device, the anchoring device include anchoring top connection 1, slips cover 4, central tube 3, feather key 5, anchor and back-off
Top connection 8,1 lower part of anchoring top connection are fixed with spring strut 2, and the lower end of the spring strut 2 is provided with slips cover 4, institute
4 upper end of slips cover stated is equipped with shoulder, and the central tube 3 is arranged in the inside of anchoring top connection 1, slips cover 4, central tube 3
Upper end and the lower end of anchoring 1 inner via hole of top connection are attached by screw thread, and the feather key 5 is located in 3 keyway of central tube,
And slips 6 is attached by holding screw and is arranged in 4 rectangular through holes of slips cover, the slips 6 is provided with anchor block hole,
The feather key 5 is moved in slips cover 4 together with central tube 3, and the anchoring device includes slips 6 and anchor block 7, institute
The anchor block 7 stated is arranged in anchor block hole, is closely connect with tube wall by anchor block 7 at work；3 lower end of central tube is connected by screw thread
It connects and is provided with back-off top connection 8；
The pressue device includes valve pocket component, first stage piston group, flow control valve 17, axial line shaft 22, two level
Piston group, seal pipe 20, baffle 18, the valve pocket component lower part are provided with first stage piston group, and the second piston group is set
It sets in the lower part of first stage piston group, the flow control valve 17 is arranged between first stage piston group and second piston group, in level-one
Seal pipe 20 and baffle 18 are additionally provided between piston group and second piston group；
The power transmission includes rotary power axis 24, fast driving head 25, under the axial line shaft 22
End is fast driving head 25, and the lower end of fast driving head 25 is spring baffle ring 26, axial line shaft 22, fast driving head 25, bullet
The inside of spring baffle ring 26 is rotary power axis 24, and 22 top of rotary power axis is provided with seal head 23, seal head 23
It is dynamic with rotation by 24 clamp spring of rotary power axis between 20 lower end outer surface of 24 upper end inner surface of rotary power axis and seal pipe
The upper shoulder of 24 upper end inner surface of power axis is limited；
The power output device includes two-level spring set 27, ratchet device and lower contact 34, the ratchet device
Including handle ratchet wheel group 28, outer ratchet I 30, outer ratchet II 32, outer ratchet spring 33 and sealing inner joint 29 and lower conversion head 31, institute
The handle ratchet wheel group 28 stated is arranged in inside two-level spring set 27, table in 28 upper end inner surface of the handle ratchet wheel group and lower end
Face is both provided with spline and is used with the spline fitted of 24 lower end outer surface of rotary power axis, and the sealing inner joint 29 is set
It sets inside 24 lower end of rotary power axis, 29 lower end of the sealing inner joint is provided with lower crossover sub 31, the lower conversion
31 outer surface of connector is evenly distributed with 4 splines and is coordinated with 28 spline of handle ratchet wheel group, under the lower crossover sub 31
End is stuck in 34 endoporus of lower contact and is attached by screw thread, and the outer surface of the lower crossover sub 31 is disposed with outer ratchet
I 30, the lower end of outer ratchet II 32, outer ratchet spring 33, the outer ratchet I 30 is outer ratchet II 32, the lower end of outer ratchet II 32
For outer ratchet spring 33, the outer ratchet spring 33 by the lower face of outer ratchet II 32 and the upper surface of lower contact 34 into
Row limit.
The inner surface of the slips 6 is provided with zigzag card slot, in the zigzag card slot of the lower external face of central tube 3
It matches, the outer surface of the slips 6 is boss cylindrical surface, and equally distributed anchor block is provided on the boss cylindrical surface
Hole,
The valve pocket component includes valve pocket 11, valve rod gear cap 9, valve rod 10 and valve plate 12, the valve pocket 11 and back-off
Top connection 8 is connected through a screw thread, and the valve rod gear cap 9, valve rod 10 and valve plate 12 are arranged in valve pocket 11, the valve rod gear cap
9 lower ends are threadedly coupled with valve rod 10, and the valve plate 12 is arranged between valve rod 10 and valve pocket 11, the valve rod 10 and level-one
Piston group is threadedly coupled.
The first stage piston group includes first stage piston set 13, first stage piston 14 and connector 15,10 He of valve rod
First stage piston 14 is threadedly coupled, and the first stage piston covers 13 lower parts and is provided with connector 15；15 lower part of the connector is arranged
It includes second piston set 21, second piston 19, the second piston 19 to have axial line shaft 22, the second piston group
It is sealed in the inside of second piston set 21 and by star sealing ring, the axial line shaft 22 is located at second piston
It is sealed by star sealing ring between the inside and upper end of set 21 and second piston set 21, first stage piston 14 and two level are lived
It is connect using screw with the threaded hole of 19 upper end of second piston by the groove at 14 lower end of first stage piston between plug 19, two level is lived
The outer circular bead surface of plug 19 and the interior circular bead surface of 22 upper end of axial line shaft are attached by screw thread；14 lower part of the first stage piston
It is provided with seal pipe 20, is adjusted and limits by 18 shoulder of baffle between first stage piston 14 and seal pipe 20；The stream
Control valve 17 is arranged between first stage piston group and second piston group, logical with bulb 16 inside 14 lower end of first stage piston
It crosses screw thread to be attached, the bulb 16 passes through the central through hole of baffle, the flow control valve spring to be located at the outer of bulb 16
Face is simultaneously limited by nut and baffle 18, and the lower end of bulb 16 is limited by shoulder in seal pipe upper end.
4 upper end of slips cover is designed for shoulder, the lower half portion of slips cover 4 be provided with equally distributed 3 it is rectangular
There is shoulder at the both ends of shape through-hole and 3 key groove shape through-holes, rectangular through holes, and equally distributed spiral shell is respectively arranged on two shoulders
Line through-hole.
It is sealed by O-ring between the central tube 3 and anchoring top connection 1, slips cover 4, the centre of central tube 3
Part is provided with shoulder, and the middle section of central tube 3 is provided with equally distributed 2 through-holes, the lower half portion setting of central tube 3
There are equally distributed 3 keyways, 2 tapped blind holes are provided in keyway, is provided on the boss cylindrical surface of the slips 6 uniformly
26 anchor block holes of distribution are provided with equally distributed 4 splines on the second piston 19, are set again on each spline
It is equipped with equally distributed 6 through-holes.
25 upper surface of fast driving head is provided with equally distributed spline, the inside setting of fast driving head 25
There is equally distributed helicla flute.The axial line shaft uses split structure with fast driving head, is conducive to adding for parts
Work, replacement and repair reduce cost, while carrying out spray coating alloy processing on the contact surface and being buckled to reducing friction loss
During, it is serious due to rubbing, easily damage.
In the present embodiment, it when arriving designated position under anchoring device, is suppressed to the interior latus rectum of anchoring top connection 1, pressure
Outflow pushes slips cover 4 to move upwards out of central tube 3 side opening, slips 6 can be driven to move together simultaneously during movement
And 6 contained spring of slips be pressurized, this moment, slips 6 can be flared out and by the anchor block 7 on slips 6 tightly be anchored on casing
On wall；When release, due to the effect of top tubing string gravity, the anchor block 7 on slips 6 can be made the more to block the more tight；When flow is more than
After certain value, flow control valve 17 will close, at this point, a part of flow will be flowed out by the side opening of 10 lower end of valve rod,
Another part flow is flowed out from the side opening of the lower end of first stage piston 13 simultaneously, and the flow flowed out from the side opening of 10 lower end of valve rod pushes
14 downlink of first stage piston and compressed spring, the flow flowed out from 14 lower end side opening of first stage piston push second piston 19, seal pipe
20, axial line shaft 22 moves downward, and drives fast driving head 25, spring baffle ring 26 to move downwardly together by axial line shaft 22
Compressed spring, while rotary power axis 24 being driven to be reversely rotated, rotary power axis 24 drives the upper ratchet of handle ratchet wheel group 28
It is rotated, the upper ratchet of handle ratchet wheel group 28 drives the bottom ratchet wheel of handle ratchet wheel group 28 to be rotated, the bottom ratchet wheel of handle ratchet wheel group 28
Lower crossover sub 31 and lower contact 34 can be driven to rotate together, complete a back-off process.Under first stage piston 14, second piston 19
When row is to bottom dead centre, stroke control valve, overpressure release are automatically opened.First stage piston 14, second piston 19 are in spring force
Effect is lower to be resetted.When first stage piston 14, second piston 19 are up to top dead-centre, flow control valve is automatically closed.Repeat the above step
Suddenly, next round back-off operation is completed.
First stage piston 14, second piston 19 reseting procedure in, the reaction torque of bottom tubing string is acted on by lower contact 34
On outer ratchet II 32, outer ratchet II 32 acts on outer ratchet I 30, and outer ratchet I 30 acts on anchoring dress by tool outer tube
It sets.It since anchoring device is fixed on internal surface of sleeve pipe, can not rotate, this process forces bottom tubing string can only Opposite side loading torsion
Square, to complete back-off operation.
The present invention novel hydraulic reverse buckling equipment, use hydraulic-driven for driving force, with axial line shaft, quick change driving head and
Rotary power axis is main powered actuation mechanism, and the axial line shaft of original integrated design is used split type knot with fast driving head
Structure is conducive to processing, replacement and the repair of parts, reduces cost, while carrying out at 12CoWC spray coating alloys on the contact surface
Reason, it is serious due to rubbing during back-off to reduce friction loss, easily damage.
The present invention controls the stroke of hydraulic pressure back-off device by valve pocket component, and only need to continue pumping liquid on ground can expire
The continuous work demand of sufficient tool, operation is very easy.
The present invention devises flow control valve, convenient for cleaning top of fish, while liquid in pipe can be discharged when upper lifting pipe post,
Avoid the pollution to well site surrounding enviroment.
The present invention is designed using double ratchet wheels group, and inside and outside ratchet is mutual indepedent, and handle ratchet wheel is not influenced by lower part rotary torque,
Outer ratchet ensures that the reversing torque occurred does not turn round, ensure that the tool it is reliable for operation with it is safe.
Novel hydraulic reverse buckling equipment output torque disclosed by the invention is big, it is easy to operate, have a wide range of application, especially in level
There is big advantage in well and high angle hole.
Above-mentioned specific implementation mode is only the specific case of the present invention, and scope of patent protection of the invention includes but not limited to
The product form and style of above-mentioned specific implementation mode, any technical field that meet claims of the present invention and any
Those of ordinary skill's appropriate changes or modifications that it is done, all shall fall within the protection scope of the present invention.
Claims (7)
1. a kind of hydraulic pressure back-off device, including anchoring device, pressue device, power transmission and power output device, feature
It is：The anchoring device includes being anchored top connection, slips cover, central tube, feather key, anchor and back-off top connection, institute
The anchoring top connection lower part stated is fixed with spring strut, and the lower end of the spring strut is provided with slips cover, central tube setting
In anchoring top connection, the inside of slips cover, central tube upper end and the lower end of anchoring top connection inner via hole are attached by screw thread,
The feather key is located in central tube keyway, and is attached slips by holding screw and is arranged in slips cover rectangular through holes
Interior, the slips is provided with anchor block hole, and feather key is moved together with central tube in slips cover, the anchoring device
Including slips and anchor block, the anchor block is arranged in anchor block hole, is closely connect with tube wall by anchor block at work；Central tube
Lower end, which is connected through a screw thread, is provided with back-off top connection；The anchoring device lower part is arranged to add to the pressurization dress of pressure
It sets；The power transmission that the pressue device lower part setting is transmitted for power；The power output device lower part is set
The power output device of hydraulic coupling output is set, the power output device includes two-level spring set, ratchet device and lower contact,
The ratchet device includes handle ratchet wheel group, outer ratchet I, outer ratchet II, outer ratchet spring and sealing inner joint and lower conversion head,
The handle ratchet wheel group is arranged in two-level spring set inside, and handle ratchet wheel group upper end inner surface and lower end inner surface are equal
It is provided with spline and is used with the spline fitted of rotary power axis lower end outer surface, sealing inner joint setting is dynamic in rotation
Inside power axis lower end, the sealing inner joint lower end is provided with lower crossover sub, and the lower crossover sub outer surface is uniformly divided
It is furnished with spline with handle ratchet wheel group spline to be coordinated, the lower crossover sub lower end, which is stuck in lower contact endoporus, passes through screw thread
It is attached, the outer surface of the lower crossover sub is disposed with outer ratchet I, outer ratchet II, outer ratchet spring, the outer spine
The lower end of wheel I is outer ratchet II, and the lower end of outer ratchet II is outer ratchet spring, and the outer ratchet spring passes through outer ratchet II
Lower face and the upper surface of lower contact limited, the pressue device includes valve pocket component, first stage piston group, flow
Control valve, axial line shaft, second piston group, seal pipe, baffle, the valve pocket component lower part are provided with first stage piston group,
The second piston group is arranged in the lower part of first stage piston group, and the flow control valve is arranged first stage piston group and lives with two level
Between plug group, seal pipe and baffle are additionally provided between first stage piston group and second piston group, the valve pocket component includes
Valve pocket, valve rod gear cap, valve rod and valve plate, the valve pocket are connected through a screw thread with back-off top connection, the valve rod gear cap, valve
Bar and valve plate are arranged in valve pocket, and valve rod gear cap lower end is connect with threaded stem, and the valve plate is arranged in valve rod and valve
Between set, the valve rod is threadedly coupled with first stage piston group.
2. a kind of hydraulic pressure back-off device according to claim 1, it is characterised in that：The power transmission includes rotation
Line shaft, fast driving head, the axial line shaft lower end are fast driving head, and the lower end of fast driving head is spring catch
Ring, axial line shaft, fast driving head, spring baffle ring inside be rotary power axis, the rotary power axis top setting
There are seal head, seal head to be located between rotary power axis upper end inner surface and seal pipe lower end outer surface through rotary power axis card
The upper shoulder of spring and rotary power axis upper end inner surface is limited.
3. a kind of hydraulic pressure back-off device according to claim 1, it is characterised in that：The inner surface of the slips is provided with sawtooth
Shape card slot, and matches in the zigzag card slot of the lower external face of central tube, and the outer surface of the slips is boss cylinder
Face is provided with equally distributed anchor block hole on the boss cylindrical surface.
4. a kind of hydraulic pressure back-off device according to claim 1, it is characterised in that：The first stage piston group includes that level-one is lived
Plug sleeve, first stage piston and connector, the valve rod and first stage piston are threadedly coupled, and first stage piston set lower part is provided with
Connector；The connector lower part is provided with axial line shaft, and the second piston group includes second piston set, two level work
Plug, the second piston are located at the inside of second piston set and are sealed by star sealing ring, and the axial direction is dynamic
Power axle position is sealed between the inside that second piston covers and upper end and second piston set by star sealing ring, and level-one is lived
It is connect using screw with the threaded hole of second piston upper end by the groove at first stage piston lower end between plug and second piston, two
The outer circular bead surface of grade piston and the interior circular bead surface of axial line shaft upper end are attached by screw thread；The first stage piston lower part is set
It is equipped with seal pipe, is adjusted and limits by baffle shoulder between first stage piston and seal pipe；The flow control valve is set
It sets between first stage piston group and second piston group, is attached by screw thread with bulb inside the first stage piston lower end,
The bulb passes through the central through hole of baffle, the flow control valve spring to be located at the outside of bulb and limited by nut and baffle
Position, the lower end of bulb is limited by shoulder in seal pipe upper end.
5. a kind of hydraulic pressure back-off device according to claim 3, it is characterised in that：It is arranged on the boss cylindrical surface of the slips
There are 26 anchor block holes.
6. a kind of hydraulic pressure back-off device according to claim 2, it is characterised in that：Fast driving head upper surface is provided with
Equally distributed spline, fast driving head are internally provided with equally distributed helicla flute.
7. a kind of hydraulic pressure back-off device according to claim 2, it is characterised in that：The axial line shaft and fast driving
Head uses split structure, the axial direction line shaft to be coated with 12CoWC alloy coats in the contact Tooth of fast driving head.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710937485.0A CN107489387B (en) | 2017-09-30 | 2017-09-30 | A kind of hydraulic pressure back-off device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710937485.0A CN107489387B (en) | 2017-09-30 | 2017-09-30 | A kind of hydraulic pressure back-off device |
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| CN107489387A CN107489387A (en) | 2017-12-19 |
| CN107489387B true CN107489387B (en) | 2018-08-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111058789A (en) * | 2018-10-16 | 2020-04-24 | 中国石油化工股份有限公司 | Underground hydraulic reversing device and method |
| CN111042751A (en) * | 2019-11-25 | 2020-04-21 | 贵州高峰石油机械股份有限公司 | Pulse torsion reversing device for well repair |
| CN117514163B (en) * | 2024-01-05 | 2024-03-12 | 贵州桥梁建设集团有限责任公司 | Rock mining device with dust removal function |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2597544B1 (en) * | 1986-04-22 | 1988-07-29 | Elf Aquitaine | ANCHORING DEVICE ON THE WALLS OF A WELL OF MEASUREMENT AND RECORDING EQUIPMENT |
| CN1415840A (en) * | 2002-08-07 | 2003-05-07 | 中国石化胜利油田有限公司采油工艺研究院 | Hydraulic inversive fastening set for well |
| CN201137469Y (en) * | 2007-12-20 | 2008-10-22 | 中国石化集团胜利石油管理局井下作业二公司 | Down-hole hydraulic reversing device |
| CN201567995U (en) * | 2009-07-31 | 2010-09-01 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Positive inverted back-off device assembly |
| CN101761318A (en) * | 2010-02-25 | 2010-06-30 | 中国石油化工股份有限公司 | Underground hydraulic pressure back-off device |
| CN103147700B (en) * | 2013-04-08 | 2014-10-29 | 盘锦勇盛利石油科技开发有限公司 | Hydraulic power reversing device |
| CN203905876U (en) * | 2014-06-13 | 2014-10-29 | 盘锦勇盛利石油科技开发有限公司 | Reverse buckling device |
| CN204113177U (en) * | 2014-10-13 | 2015-01-21 | 秦立松 | Hydraulic returnable back-off fisher |
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