CN107288563A - Releasing tool - Google Patents
Releasing tool Download PDFInfo
- Publication number
- CN107288563A CN107288563A CN201610202766.7A CN201610202766A CN107288563A CN 107288563 A CN107288563 A CN 107288563A CN 201610202766 A CN201610202766 A CN 201610202766A CN 107288563 A CN107288563 A CN 107288563A
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- China
- Prior art keywords
- connector
- mandrel
- releasing tool
- mandrel component
- limiting section
- Prior art date
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- 238000007789 sealing Methods 0.000 claims abstract description 130
- 230000002093 peripheral effect Effects 0.000 claims abstract description 42
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 42
- 238000010008 shearing Methods 0.000 claims description 37
- 230000007246 mechanism Effects 0.000 claims description 26
- 230000033001 locomotion Effects 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000003019 stabilising effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
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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)
- Earth Drilling (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention provides a kind of releasing tool, for sealing drum to be stayed in precalculated position, including：Mandrel component a, part for mandrel component is stretched into sealing drum；Connector, at least a portion of connector is folded between the outer peripheral face of mandrel component and the inner peripheral surface of sealing drum so that connector is rotated with the rotation of mandrel component, and connector and sealing drum are threadedly coupled；Limiting section, limiting section is located between the outer peripheral face of mandrel component and the inner peripheral surface of sealing drum, limiting section has the first operating position and the second operating position, when limiting section is in the first operating position, and limiting section is abutted with connector so that connector is in screw-threaded coupling state with sealing drum；When limiting section is in the second operating position, limiting section is separated with connector so that connector releases state with sealing drum in screw thread.The present invention solve releasing tool of the prior art complete to give up operation poor reliability the problem of.
Description
Technical field
The present invention relates to oilfield well completion apparatus field, in particular to a kind of releasing tool.
Background technology
Existing releasing tool generally has two kinds, and one kind is hydraulic releasing tool, and another is mechanical releasing tool.
The mode that hydraulic releasing tool uses " shear pin "+" suppressing " carries out operation of giving up.On the one hand, well is entered in tubing string
During, shear pin is easily produced fatigue deformation by extraneous shock loading or surprisingly cut, and the pressure that causes to give up is forbidden,
Or give up in advance；On the other hand, shear pin is easily under " upper button " effect that tube post is produced, because the relative motion between part by
Power and it is tired, the pressure that causes to give up is forbidden, or is given up in advance.
A mechanical releasing tool part is given up using " left-hand thread " mode, and a part is carried out using " directly pushing " mode
Give up." left-hand thread " mode can not under fashionable rotating forward tubing string, this considerably increases tubing string tripping in difficulty, extend fashionable under tubing string
Between；" directly pushing " mode is easy to conflict with " being hampered " after tubing string tripping in horizontal segment so that ground judges that downhole conditions are stranded
Difficulty, operation difficulty is big, easily causes and gives up in advance, which has limited use of this kind of instrument in horizontal well.
The content of the invention
It is a primary object of the present invention to provide a kind of releasing tool, operation of giving up is completed to solve releasing tool of the prior art
Poor reliability the problem of.
To achieve these goals, the invention provides a kind of releasing tool, for sealing drum to be stayed in precalculated position, including：
Mandrel component a, part for mandrel component is stretched into sealing drum；Connector, at least a portion of connector is folded in mandrel component
Outer peripheral face and sealing drum inner peripheral surface between so that connector is rotated with the rotation of mandrel component, connector and sealing drum spiral shell
Line is connected；Limiting section, limiting section is located between the outer peripheral face of mandrel component and the inner peripheral surface of sealing drum, and limiting section has the first work
Make position and the second operating position, when limiting section be in the first operating position when, limiting section abutted with connector so that connector and
Sealing drum is in screw-threaded coupling state；When limiting section is in the second operating position, limiting section is separated with connector so that connector
With sealing drum state is released in screw thread.
Further, connector is cylindrical in shape, and the first circumferential drive mechanism, mandrel are provided with the inner peripheral surface of tubular connector
The second circumferential drive mechanism being engaged with the first circumferential drive mechanism is provided with the outer peripheral face of component.
Further, the first circumferential drive mechanism is at least one projection stretched out by the inner circumferential of connector towards mandrel component side,
Second circumferential drive mechanism is the groove being engaged by clamping with projection.
Further, it is raised for multiple, multiple raised inner peripheral surfaces interval settings around connector.
Further, the outer peripheral face of connector has an outer silk screw thread, outer silk screw thread have along the axial direction of connector open up to
A few deformation otch.
Further, when releasing tool is in use state, limiting section is located at the lower section of connector, when limiting section is in first
During operating position, the upper end of limiting section is abutted with the lower end of connector；When limiting section is in the second operating position, limiting section
Upper end is separated with the lower end of connector.
Further, the first circumferential drive mechanism is arranged on the side of the remote limiting section of connector, and outer silk screw thread is arranged on connection
The side of the close limiting section of part.
Further, there is space, when limiting section is worked from the first operating position to second between mandrel component and connector
During change in location, space is used to make connector relative to the change in location of sealing drum.
Further, the first stop configurations for being circumferentially provided with the stretching of orientation movements space of mandrel component, the first stop configurations position
Abut or separate in the axial direction of mandrel component in the lower section of connector and with connector, when limiting section is in the first operating position,
First stop configurations separate with connector and form movement clearance, and movement clearance is a part for space.
Further, limiting section includes：The support component for abutting or separating with connector；First shearing shear pin, support component is led to
Cross the first shearing shear pin to be arranged on mandrel component, when the first shearing shear pin, which is in, does not cut state, limiting section is in the first work
Make position so that connector is in screw-threaded coupling state with sealing drum, when the first shearing shear pin is in cutting state, at limiting section
In the second operating position, limiting section is separated with connector so that connector releases state with sealing drum in screw thread.
Further, support component includes：The support set on the outside of mandrel component is set in, support set is abutted or separated with connector；
Along the first movable part of the axial direction support support set of mandrel component, the first movable part is arranged on mandrel component by the first shearing shear pin
On, when limiting section is in the first operating position, the first movable part and support set towards the side of mandrel component and mandrel component
Outer peripheral face between form pressure pocket, the side wall of mandrel component has the first pressure transmission through hole, and the inwall of mandrel component passes through first and passed
Pressure through hole is connected with pressure pocket.
Further, the first movable part has the second stop configurations stretched out towards mandrel component side, and the second stop configurations will be held
It is the first sub- cavity and the second sub- cavity along the axially spaced of mandrel component to press chamber, and the first sub- cavity is close relative to the second sub- cavity
The side of connector, the first pressure transmission through hole is connected with the second sub- cavity；First movable part has second connected with the first sub- cavity
Pressure transmission through hole, the side wall of sealing drum has the 3rd pressure transmission through hole, and the second pressure transmission through hole is connected with the 3rd pressure transmission through hole.
Further, support component also includes：Seal, seal is arranged on the outer peripheral face of the second stop configurations and mandrel component
Between；And/or safety collar, safety collar is arranged between support set and the outer peripheral face of mandrel component.
Further, releasing tool also includes：It is set in the biography that can be slided on mandrel component and along the axial direction of mandrel component
Square portion, passing square portion, there is decentralization to pass square position and biography square position of giving up；Second shearing shear pin, passes square portion and passes through the second shearing shear pin
It is connected with mandrel component；When the second shearing shear pin, which is in, does not cut state, passes square portion and pass square position in decentralization so as to pass square portion
It is connected with sealing drum locking and the moment of torsion of mandrel component is passed into sealing drum；When the second shearing shear pin is in cutting state, pass
Square portion is in biography square position of giving up and is separated with sealing drum so as to pass square portion and the moment of torsion of mandrel component is passed into connector.
Further, releasing tool also includes baffle ring, and baffle ring is set on mandrel component to limit the motion in biography square portion, passed
Square portion is in being located axially between baffle ring and sealing drum along mandrel component.
Further, passing the end face of the one end towards sealing drum in square portion has first to pass square structure, and sealing drum has to be passed with first
The second biography square structure that square structure is engaged.
Further, the first biography square structure and the second biography square structure are the concave-convex fit structures of mutual clamping.
Further, at least one sliding elongated hole that the side wall that passing square portion, there is insertion to pass square portion is set, slides the length side of elongated hole
To the axial direction for mandrel component.
Further, there is mandrel component at least one moment of torsion to transmit block, and each slide is embedded with a moment of torsion transmission block in elongated hole.
Further, adjusting set and the second movable part that square portion includes being sequentially connected with along the axial direction of mandrel component are passed, adjusting set and the
Two movable parts are threadedly coupled.
Further, adjusting set and the second movable part that square portion includes being sequentially connected with along the axial direction of mandrel component are passed, adjusting set and the
Two movable parts are threadedly coupled；Second movable part has first to pass square structure.
Further, adjusting set and the second movable part that square portion includes being sequentially connected with along the axial direction of mandrel component are passed, adjusting set and the
Two movable parts are threadedly coupled；Second movable part has sliding elongated hole.
Further, between adjusting set and the second movable part the screw thread rotation between screw thread rotation direction and connector and sealing drum
In the opposite direction.
Further, the outer peripheral face of connector has outer silk screw thread, and outer silk screw thread is left-handed outer silk male thread.
Further, mandrel component includes top connection, upper mandrel and the lower mandrel being axially sequentially connected with along mandrel component, top connection
With the connection of upper mandrel thread, upper mandrel and the connection of lower mandrel thread.
Further, the screw thread rotation direction between top connection and upper mandrel and connector and sealing drum screw thread rotation are in opposite direction；
Screw thread rotation direction and connector and sealing drum screw thread rotation between upper mandrel and lower mandrel is in opposite direction.
Apply the technical scheme of the present invention, due to being threadedly coupled between connector and sealing drum, moment of torsion can be passed by mandrel component
Connector is delivered to, so the separation of connector and sealing drum just can be realized by way of machinery rotation, so that sealing drum be stayed
In precalculated position, the operation of giving up of releasing tool is completed.Because limiting section has the first operating position, when limiting section is in first
During operating position, limiting section is abutted with connector so that connector and sealing drum are in screw-threaded coupling state, so, sealing drum with
Sealing drum just can be delivered to precalculated position by releasing tool formation integrative-structure, releasing tool.Because limiting section has the second work
Make position, limiting section is separated with connector so that connector releases state with sealing drum in screw thread, so, in connector and close
In the case that the helicitic texture of sealed tube is not damaged, realize the disengaging between connector and sealing drum, thus by lifting with
The mandrel component that connector is connected just can make connector separate sealing drum staying in precalculated position with sealing drum.Therefore, originally
The releasing tool of invention can complete operation of giving up by two ways, and when a certain kind mode of giving up fails, releasing tool is still
The effect of giving up can be completed using another mode of giving up.So, the use reliability of releasing tool is not only increased, also makes guarantee
Releasing tool completes to give up the reliability of operation, also effectively extends the service life of releasing tool.Meanwhile, of the invention loses
The characteristics of hand-held tool also has simple in construction and safe operation.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows a kind of structural representation of the releasing tool with sealing drum of alternative embodiment according to the present invention；And
Fig. 2 shows the partial enlarged drawing at A in Fig. 1.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, sealing drum；101st, the 3rd pressure transmission through hole；102nd, second square structure is passed；112nd, pressure pocket；1121st, the first sub- chamber
Body；1122nd, the second sub- cavity；20th, mandrel component；21st, top connection；211st, the 4th pressure transmission through hole；212nd, moment of torsion transmission block；
22nd, upper mandrel；221st, the first stop configurations；222nd, the first pressure transmission through hole；23rd, lower mandrel；30th, connector；31st,
One circumferential drive mechanism；32nd, outer silk screw thread；33rd, space；331st, movement clearance；40th, limiting section；41st, support group
Part；411st, support set；412nd, the first movable part；4121st, the second stop configurations；4122nd, the second pressure transmission through hole；413rd, it is close
Sealing；414th, safety collar；42nd, the first shearing shear pin；50th, square portion is passed；51st, adjusting set；52nd, the second movable part；521、
First passes square structure；522nd, elongated hole is slid；53rd, snap ring；60th, the second shearing shear pin；70th, baffle ring.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can be mutually combined.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless otherwise finger
Bright, all technologies used herein and scientific terminology have what is be generally understood that with the application person of an ordinary skill in the technical field
Identical meanings.
In the present invention, in the case where not making opposite explanation, the noun of locality used is typically directed to accompanying drawing institute as " upper and lower "
For the direction shown, or on vertical, vertical or gravity direction；Similarly, for ease of understanding and describing,
" left and right " is typically for shown in the drawings left and right；" inside and outside " refers to the inside and outside of the profile relative to each part in itself,
But the above-mentioned noun of locality is not intended to limit the invention.
In order to solve releasing tool of the prior art complete to give up operation poor reliability and complicated, not easy-operating ask
Topic, the invention provides a kind of releasing tool.
As depicted in figs. 1 and 2, it is of the invention be used for by sealing drum 10 stay the releasing tool in precalculated position include mandrel component 20,
Connector 30 and limiting section 40, a part for mandrel component 20 are stretched into sealing drum 10；At least a portion folder of connector 30
It is located between the inner peripheral surface of the outer peripheral face of mandrel component 20 and sealing drum 10 so that connector 30 is with the rotation of mandrel component 20
And rotate, connector 30 and sealing drum 10 are threadedly coupled；Limiting section 40 is located at the outer peripheral face and sealing drum 10 of mandrel component 20
Inner peripheral surface between, limiting section 40 have the first operating position and the second operating position, when limiting section 40 be in the first working position
When putting, limiting section 40 is abutted with connector 30 so that connector 30 is in screw-threaded coupling state with sealing drum 10；Work as limiting section
40 when being in the second operating position, limiting section 40 separated with connector 30 so that connector 30 and sealing drum 10 to be in screw thread loose
De- state.
Due to being threadedly coupled between connector 30 and sealing drum 10, moment of torsion can be delivered to connector 30 by mandrel component 20,
The separation of connector 30 and sealing drum 10 just so can be realized by way of machinery rotation, so as to sealing drum 10 be stayed in pre-
Positioning is put, and completes the operation of giving up of releasing tool.
Because limiting section 40 has the first operating position, when limiting section 40 is in the first operating position, limiting section 40 is with being connected
Part 30 is abutted so that connector 30 is in screw-threaded coupling state with sealing drum 10, and so, sealing drum 10 is formed with releasing tool
Sealing drum 10 just can be delivered to precalculated position by integrative-structure, releasing tool.
Because limiting section 40 has the second operating position, limiting section 40 is separated with connector 30 so that connector 30 and sealing drum
10 release state in screw thread, so, in the case where the helicitic texture of connector 30 and sealing drum 10 is not damaged, real
The disengaging between connector 30 and sealing drum 10 is showed, so that by lifting the mandrel component 20 being connected with connector 30 just
Connector 30 can be made to separate sealing drum 10 staying in precalculated position with sealing drum 10.Therefore, releasing tool energy of the invention
Operation of giving up enough is completed by two ways, and when a certain kind mode of giving up fails, releasing tool remains to give up using another
Mode completes the effect of giving up.So, the use reliability of releasing tool is not only increased, also makes to ensure that releasing tool completes to lose
The reliability of manual task, also effectively extends the service life of releasing tool.Meanwhile, releasing tool of the invention also has structure
The characteristics of simple and safe operation.
As shown in figure 1, in an alternate embodiment of the present invention where, connector 30 is cylindrical in shape, tubular connector 30
It is provided with the first circumferential drive mechanism 31, the outer peripheral face of mandrel component 20 and is provided with and the first circumferential drive mechanism on inner peripheral surface
31 the second circumferential drive mechanisms being engaged.So, the first circumferential circumferential drive mechanism snap-fit of drive mechanism 31 and second with
The first circumferential circumferential drive mechanism circumferential clocking of turbine of drive mechanism 31 and second is set to rotate, so as to ensure that mandrel component 20 will
Its moment of torsion being subject to stably passes to connector 30, connector 30 is rotated with the rotation of mandrel component 20, enters
And ensure that the reliability of releasing tool work.
Alternatively, the first circumferential drive mechanism 31 is at least one stretched out by the inner circumferential of connector 30 towards the side of mandrel component 20
Individual projection, the second circumferential drive mechanism is the groove being engaged by clamping with projection.Using this optional embodiment, not only ensure
The stability that moment of torsion is transmitted between mandrel component 20 and connector 30, and also simplify mandrel component 20 and connector 30
Assembly or disassembly process, so as to improve the convenience of releasing tool.
Still optionally further, it is raised for multiple, multiple raised inner peripheral surfaces interval settings around connector 30.In this optional reality
Apply in mode, mandrel component 20 delivers torque to connector 30, mandrel component 20 and connector 30 can be effectively increased
Between contact area so that the twisting resistance between the first circumferential circumferential drive mechanism of drive mechanism 31 and second is evenly distributed,
Avoid releasing tool because local pressure is excessive and caused by damage of components, and then improve the service life of releasing tool.
As shown in figure 1, when releasing tool is in use state, limiting section 40 is located at the lower section of connector 30, works as limiting section
40 be in the first operating position when, the upper end of limiting section 40 is abutted with the lower end of connector 30；When limiting section 40 is in the second work
When making position, the upper end of limiting section 40 is separated with the lower end of connector 30.So, between limiting section 40 and mandrel component 20
Constraint disappear after, limiting section 40 can be changed from the first operating position to the second operating position under gravity,
So that the abutting power between limiting section 40 and connector 30 disappears.
As depicted in figs. 1 and 2, the outer peripheral face of connector 30 has outer silk screw thread 32, and outer silk screw thread 32 has along connector 30
At least one deformation otch (not shown) for opening up of axial direction.So, the upper end of limiting section 40 and the lower end of connector 30
During separation, due to the presence of deformation otch, connector 30 can produce certain undergauge deformation in the radial direction thereof, so that connector
Restriction ability reduction between the thread segment of 30 certain and sealing drum 10 with deformation otch.So so that connector 30
In the external force by the axial direction along mandrel component 20, more swimmingly it can be separated from sealing drum 10, so that really
Having protected releasing tool and sealing drum 10 can be smoothly detached, and then ensure that the reliability of the operation of giving up of releasing tool.
Alternatively, the first circumferential drive mechanism 31 is arranged on the side of the remote limiting section 40 of connector 30, outer silk screw thread 32
It is arranged on the side of the close limiting section 40 of connector 30.This way it is ensured that connector 30 is during transmission moment of torsion, connection
There is farthest distance, so as to increase the arm of force between the position of the incoming moment of torsion of part 30 and the position for spreading out of moment of torsion, it is ensured that turn round
Square is stably transmitted.
As depicted in figs. 1 and 2, there is space 33, when limiting section 40 is by first between mandrel component 20 and connector 30
During operating position changes to the second operating position, space 33 is used to make connector 30 relative to the position of sealing drum 10
Put change.Due to having space 33 between mandrel component 20 and connector 30, thus space 33 is connector 30
Mandrel component 20 axial direction and/or in the radial direction position movement provide headroom so that in the upper of limiting section 40
End is with the lower end of connector 30 when separating, connector 30 can the sealing drum 10 motionless relative to position move so that company
Fitting 30 and sealing drum 10 are gradually released, it is ensured that the stability that connector 30 and sealing drum 10 are separated.
As depicted in figs. 1 and 2, the first stop configurations 221 for being circumferentially provided with the stretching of orientation movements space 33 of mandrel component 20,
First stop configurations 221 are located at the lower section of connector 30 and abut or separate in the axial direction of mandrel component 20 with connector 30,
When limiting section 40 is in the first operating position, the first stop configurations 221 separate with connector 30 and form movement clearance 331,
Movement clearance 331 is a part for space 33.
Due to being provided with the first stop configurations 221, thus after the upper end of limiting section 40 is separated with the lower end of connector 30, connection
Part 30 can be moved downward because of its own Action of Gravity Field, and the first stop configurations 221 and the second movable part 52 coordinate connector 30
First circumferential drive mechanism 31 is effectively spacing in movement clearance 331, so as to when reclaiming releasing tool, make connector 30
Also it is retracted simultaneously.
In an optional embodiment (not shown), connector is multiple, and multiple connectors are set around the circumferentially-spaced of mandrel component
Put, each connector is threadedly coupled at the first operating position with sealing drum.And each connector is also in the first circumferential transmission
In the presence of structure, relative to mandrel component synchronous axial system.Connector is at the first operating position, and limiting section is under connector
Side is supported to connector.Because connector and limiting section are in inclined-plane mated condition, thus limiting section is in the footpath along mandrel component
A support force is provided on to direction makes connector be fitted close with sealing drum.After limiting section and connector depart from, connector by
The radial support power arrived disappears, and now, restraining force of the connector with sealing drum diametrically can reduce, so that connector is in mandrel
When component is detached upwards, connector can be separated from mandrel component with sealing drum.
As depicted in figs. 1 and 2, limiting section 40 includes the shear scissors of support component 41 and first for abutting or separating with connector 30
Nail 42；Support component 41 is arranged on mandrel component 20 by the first shearing shear pin 42, when the first shearing shear pin 42 is in not
During cutting state, limiting section 40 is in the first operating position so that connector 30 and sealing drum 10 are in screw-threaded coupling state, when
When first shearing shear pin 42 is in cutting state, limiting section 40 is in 30 points of the second operating position, limiting section 40 and connector
From so that connector 30 releases state with sealing drum 10 in screw thread.
During decentralization releasing tool and sealing drum 10, because the first shearing shear pin 42 is not affected by the effect of external force, thus
Support component 41 can be caused to keep the abutting with connector 30, now the first shearing shear pin 42, which is in, does not cut state.At this moment,
Support component 41 and mandrel component 20 are fixed together so that connector 30 is supported component all the time by the first shearing shear pin 42
The effect of 41 abutting power, and then ensure that connector 30 is in screw-threaded coupling state all the time with sealing drum 10, it is ensured that connection
Connection reliability between part 30 and sealing drum 10.Moreover, after sealing drum 10 reaches predeterminated position, the first shear scissors
After nail 42 is cut off, support component 41 is moved downward so that connector 30 is not in the support of component 41 that is supported, now,
Just the separation of releasing tool and sealing drum 10 can be realized by above carrying mandrel component 20 and releasing tool is reclaimed.
As shown in figure 1, support component 41 includes being set in the support set 411 in the outside of mandrel component 20 and along mandrel component 20
The first movable part 412 of support set 411 is axially supported, support set 411 is abutted or separated with connector 30；First movable part 412
It is arranged on by the first shearing shear pin 42 on mandrel component 20, when limiting section 40 is in the first operating position, the first movable part
Pressure pocket 112, core are formed between 412 and the outer peripheral face towards the side of mandrel component 20 and mandrel component 20 of support set 411
The side wall of shaft assembly 20 has the first pressure transmission through hole 222, and the inwall of mandrel component 20 passes through the first pressure transmission through hole 222 and pressure pocket
112 connections.So, liquid can enter in pressure pocket 112 to cut the first shearing shear pin 42 by the first pressure transmission through hole 222.
As shown in figure 1, the first movable part 412 has the second stop configurations 4121 stretched out towards the side of mandrel component 20, second
Pressure pocket 112 is the first sub- cavity 1122 of sub- cavity 1121 and second along the axially spaced of mandrel component 20 by stop configurations 4121,
First sub- cavity 1121 is relative to the second sub- cavity 1122 close to the side of connector 30, the first pressure transmission through hole 222 and the second son
Cavity 1122 is connected；First movable part 412 has the second pressure transmission through hole 4122 connected with the first sub- cavity 1121, sealing drum
10 side wall has the 3rd pressure transmission through hole 101, and the second pressure transmission through hole 4122 is connected with the 3rd pressure transmission through hole 101.So, it is ensured that
The first sub- sub- cavity 1122 of cavity 1121 or the second is entered, so that the first movable part 412 is by downward work liquid stabilising
Firmly cut first and shear shear pin 42.
As depicted in figs. 1 and 2, support component 41 also includes seal 413 and safety collar 414, and seal 413 is arranged on the
Between two stop configurations 4121 and the outer peripheral face of mandrel component 20；And/or safety collar 414 is arranged on support set 411 and mandrel group
Between the outer peripheral face of part 20.Because seal 413 is arranged between the second stop configurations 4121 and the outer peripheral face of mandrel component 20,
So as to ensure that the sealing between the first pressure transmission through hole 222 and the second sub- cavity 1122.Because safety collar 414 is arranged on support
Between set 411 and the outer peripheral face of mandrel component 20, so that when limiting section 40 is in the first operating position, 414 pairs of branch of safety collar
Support set 411 has position-limiting action, and when limiting section 40 is in the second operating position, safety collar 414 can be along away from mandrel group
The direction of part 20 departs from mandrel component 20 and lost to the position-limiting action of support set 411 so that support set 411 is moved downward.
As shown in figure 1, releasing tool also includes being set on mandrel component 20 and can slided along the axial direction of mandrel component 20
The dynamic shearing of biography square portion 50 and second shear pin 60, passing square portion 50, there is decentralization to pass square position and biography square position of giving up；Pass square portion 50
It is connected by the second shearing shear pin 60 with mandrel component 20；When the second shearing shear pin 60, which is in, does not cut state, square portion 50 is passed
Square position, which is passed, in decentralization is connected with the locking of sealing drum 10 so as to pass square portion 50 and the moment of torsion of mandrel component 20 is passed into sealing drum
10；When the second shearing shear pin 60 is in cutting state, square portion 50 is passed in biography square position of giving up so as to pass square portion 50 and sealing
Cylinder 10 separates and the moment of torsion of mandrel component 20 is passed into connector 30.
Due to being provided with the second shearing shear pin 60, so that when the second shearing shear pin 60 is before and after the state of cutting, it is ensured that pass
Square portion 50 passes square position from decentralization and moved to biography square position of giving up.Specifically, in the mistake of decentralization releasing tool and sealing drum 10
Cheng Zhong, passes square portion 50 and passes square position (as shown in Figure 1) in decentralization, now, mandrel component 20 can by pass square portion 50 by
The moment of torsion itself being subject to is delivered to square portion 50, and the moment of torsion that biography square portion 50 is subject to again is delivered to sealing drum 10, so that close
Sealed tube 10 is rotated with the rotation of releasing tool, when the overall tubing string with releasing tool and sealing drum 10 is lowered into bore hole water
Flat section and when meeting with obstruction, overall tubing string can be made to be continued traveling downwardly through obstruction by rotational release instrument.Work as sealing drum
10 are reached after predeterminated position, and shear pin 60 is sheared in cut-out second, are passed the overall motion upwards in square portion 50, are passed square portion 50 and reach biography of giving up
Square position (not shown), now, mandrel component 20 is by being no longer transmitted to sealing drum 10 after moment of torsion, but the company of being directly delivered to
Fitting 30, accordingly even when when limiting section 40 is in the first operating position, can also be realized and lost by way of rotational release instrument
The separation of hand-held tool and sealing drum 10, so that sealing drum 10 is stayed in into precalculated position, realizes the recovery of releasing tool.
Pass the overall mode moved upwards in square portion 50 as follows：The 4th pressure transmission through hole 211 is provided with square portion 50 as shown in figure 1, passing,
Pass and be surrounded by sealing cavity between square portion 50 and mandrel component 20, in the inner circumferential side for passing square portion 50 and the periphery of mandrel component 20
Side has one respectively to be used for the sealed O-ring seal of sealing cavity；4th pressure transmission through hole 211 is connected with sealing cavity, this
Sample, liquid can be entered in sealing cavity by the 4th pressure transmission through hole 211, and sealing cavity bears pressure so that the second shearing shear pin
60 are cut by shearing force, are moved upwards in the presence of liquid thrust so that passing square portion 50, to complete to pass square portion
50 pass the motion process that square position passes square position to giving up from decentralization.
As shown in figure 1, releasing tool also includes baffle ring 70, baffle ring 70 is set on mandrel component 20 passes square portion to limit
50 motion, passes square portion 50 in being located axially between baffle ring 70 and sealing drum 10 along mandrel component 20.So, keep away
The upward excessive movement in square portion 50 is exempted to pass and has been collided damage with the other structures part outside releasing tool.
As shown in figure 1, the end face for passing the one end towards sealing drum 10 in square portion 50 has first to pass square structure 521, sealing drum
10 have be engaged with the first biography square structure 521 second to pass square structure 102.First, which passes square structure 521 and second, passes square structure
102 be the concave-convex fit structure of mutual clamping.So, when passing square portion 50 in decentralization biography square position, it is ensured that mandrel component
20 moment of torsion stably passes to sealing drum 10.
As shown in figure 1, passing at least one the sliding elongated hole 522 for the side wall setting that there is insertion to pass square portion 50 in square portion 50, sliding length
The length direction in hole 522 is the axial direction of mandrel component 20.There is mandrel component 20 at least one moment of torsion to transmit block 212, each sliding
Move and a moment of torsion transmission block 212 is embedded with elongated hole 522.So, square position is passed to giving up when biography square portion 50 passes square position from decentralization
In the motion process put, moment of torsion transmission block 212 is just in the length direction motion of sliding elongated hole 522, and sliding elongated hole 522 is also acted as
The effect for the displacement that limitation mandrel component 20 is moved upwards.When mandrel component 20 is rotated, moment of torsion transmission block 212 is connected to
In the interior side wall for sliding elongated hole 522, so that the moment of torsion of mandrel component 20 is efficiently transferred to pass in square portion 50 all the time.
As shown in figure 1, the movable part 52 of adjusting set 51 and second that square portion 50 includes being sequentially connected with along the axial direction of mandrel component 20 is passed,
The movable part 52 of adjusting set 51 and second is threadedly coupled.Pass the regulation that square portion 50 includes being sequentially connected with along the axial direction of mandrel component 20
The movable part 52 of set 51 and second, the movable part 52 of adjusting set 51 and second is threadedly coupled；Second movable part 52 has first to pass square
Structure 521.Pass the movable part 52 of adjusting set 51 and second that square portion 50 includes being sequentially connected with along the axial direction of mandrel component 20, regulation
The movable part 52 of set 51 and second is threadedly coupled；Second movable part 52 has sliding elongated hole 522.The movable part of adjusting set 51 and second
The screw thread rotation between screw thread rotation direction and connector 30 and sealing drum 10 between 52 is in opposite direction.So, when pass through rotation
Turn connector 30 and make during connector 30 separates with sealing drum 10, it is to avoid the movable part 52 of adjusting set 51 and second leads to
The phenomenon crossed rotational release and cause releasing tool to fail, so as to improve the stability of releasing tool work.
As shown in figure 1, the snap ring 53 that square portion 50 also includes being arranged between the outer peripheral face of adjusting set 51 and mandrel component 20 is passed,
During being moved upwards in the presence of liquid thrust when biography square portion 50, also with passing, square portion 50 is upward to move snap ring 53, by
There is one-way movement characteristic in snap ring 53, it can hold mandrel component 20 tightly during moving upwards, so as to avoid biography square portion
50 are caused moment of torsion transmission wrong and cause the consequence of releasing tool work actual effect by being dropped in the presence of self gravitation, and then ensure
The reliability of releasing tool work.
Alternatively, the snap ring 53 is c-type snap ring.
As shown in figure 1, mandrel component 20 include axially being sequentially connected with along mandrel component 20 top connection 21, upper mandrel 22 and under
Mandrel 23, top connection 21 and upper mandrel 22 are threadedly coupled, and upper mandrel 22 and lower mandrel 23 are threadedly coupled.Top connection 21 and upper
Screw thread rotation direction and connector 30 and the screw thread rotation of sealing drum 10 between mandrel 22 is in opposite direction；Upper mandrel 22 and lower core
Screw thread rotation direction and connector 30 and the screw thread rotation of sealing drum 10 between axle 23 is in opposite direction.So, connect when by rotating
Fitting 30 and make during connector 30 separates with sealing drum 10, it is to avoid top connection 21 and upper mandrel 22 be threadedly coupled with
And upper mandrel 22 and lower mandrel 23 cause the phenomenon that releasing tool fails by rotational release, so as to improve releasing tool work
The stability of work.
Alternatively, the outer peripheral face of connector 30 has outer silk screw thread 32, and outer silk screw thread 32 is left-handed outer silk male thread.Now,
The movable part 52 of adjusting set 51 and second, top connection 21 and upper mandrel 22 are threadedly coupled, between upper mandrel 22 and lower mandrel 23
Screw thread is right-handed thread.
Two kinds of modes of giving up of the releasing tool of the lower mask body narration present invention：
Mode one：When the overall tubing string with releasing tool and sealing drum 10 transfers to the predeterminated position of sealing drum 10 and completes liquid
After pressing hanging packer setting, tool is squeezed into the space (not shown) between the top of hanging packer, the outside of tubing string and sleeve pipe
There is the liquid of pressure, entered by the 3rd pressure transmission through hole 101 and the second pressure transmission through hole 4122 in the first sub- cavity 1121, so that
Acted on to pressure on the first movable part 412, make the first movable part 412 by downward power, when fluid pressure reaches the value of setting
When, the power acted on the first movable part 412 can cut the first shearing shear pin 42, so that the first movable part 412 is moved downward,
Safety collar 414 loses limit function, and support set 411 is moved down, so, and the bottom of connector 30 just loses the branch of support set 411
Support, it is upper carry mandrel component 20 when, the part with outer silk screw thread 32 of connector 30 is inside contracted so that connector 30 and
Sealing drum 10 is disengaged, and above proposes the operation of giving up that releasing tool is realized after mandrel component 20.
Mode two：When hydraulic suspension packer is in setting suppress, liquid enters sealing cavity from the 4th pressure transmission through hole 211, makes biography
Square portion 50 is by upward power, when the fluid pressure in sealing cavity reaches the value of setting, acts on the power meeting passed in square portion 50
Cut second and shear shear pin 60, moved up so that passing square portion 50 so that pass the first of square portion 50 pass square structure 521 with it is close
Second biography square structure 102 of the upper end of sealed tube 10 is separated, while snap ring 53 shrinks, prevents that passing square portion 50 falls after rise, then mandrel group
Part 20, makes releasing tool and sealing drum 10 bear drag load, then rotary core shaft component 20, make the screw thread of connector 30 with it is close
The screw thread of sealed tube 10 is disengaged, and last directly releasing tool realizes operation of giving up.
The releasing tool of the present invention can also realize that, to the setting of hanging packer, detailed process is as follows：When with releasing tool
With occur fortuitous event in the overall tubing string decentralization process of sealing drum 10 and when can not carry out setting hanging packer according to normal procedure,
Ball can be put into the central tube (not shown) of releasing tool, ball is fallen at the conical surface of setting ball seat, then inside tubing string
Suppress, liquid enters the inside of hydraulic suspension packer by the pressure transmission hydrophthalmia at the middle part of lower mandrel 23, make hanging packer seat
Envelope；Then realized by the above-mentioned mode of giving up and send giving up for well instrument operation and to reclaim releasing tool.
The releasing tool of the present invention also has the following advantages that：
1. using the releasing tool of the present invention give up before and after operation, the screw thread of the upper end of sealing drum 10 be it is intact and it is exposed outside
, tieback string can be thus descended again, carry out follow-up construction.
2. the releasing tool of the present invention is simple in construction and safe and reliable, the problems in construction can be solved.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root according to this Shen
Illustrative embodiments please.As used herein, unless the context clearly indicates otherwise, otherwise singulative is also intended to
Including plural form, additionally, it should be understood that, when using term "comprising" and/or " comprising " in this manual,
It indicates existing characteristics, step, work, device, component and/or combinations thereof.
It should be noted that term " first ", " second " in the description and claims of this application and above-mentioned accompanying drawing etc.
It is for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that the data so used
It can exchange in the appropriate case, so that presently filed embodiment described herein can be with except illustrating or describing herein
Order beyond those is implemented.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made, etc.
With replacement, improvement etc., it should be included in the scope of the protection.
Claims (26)
1. a kind of releasing tool, for sealing drum (10) to be stayed in precalculated position, it is characterised in that including：
Mandrel component (20) a, part for the mandrel component (20) is stretched into the sealing drum (10)；
Connector (30), at least a portion of the connector (30) is folded in the outer peripheral face of the mandrel component (20)
So that the connector (30) turning with the mandrel component (20) between the inner peripheral surface of the sealing drum (10)
Move and rotate, the connector (30) and the sealing drum (10) threaded connection；
Limiting section (40), the limiting section (40) is located at the outer peripheral face and the sealing drum (10) of the mandrel component (20)
Inner peripheral surface between, the limiting section (40) have the first operating position and the second operating position, when the limiting section (40)
During in first operating position, the limiting section (40) is abutted with the connector (30) so that the connector
(30) it is in screw-threaded coupling state with the sealing drum (10)；When the limiting section (40) is in the described second work
During position, the limiting section (40) is separated with the connector (30) so that the connector (30) and the sealing
Cylinder (10) releases state in screw thread.
2. releasing tool according to claim 1, it is characterised in that the connector (30) is cylindrical in shape, tubular institute
The first circumferential drive mechanism (31), the periphery of the mandrel component (20) are provided with the inner peripheral surface for stating connector (30)
The second circumferential drive mechanism being engaged with the described first circumferential drive mechanism (31) is provided with face.
3. releasing tool according to claim 2, it is characterised in that the described first circumferential drive mechanism (31) is by described
At least one projection that the inner circumferential of connector (30) is stretched out towards the mandrel component (20) side, described second is circumferential
The groove that drive mechanism is and the projection is engaged by clamping.
4. releasing tool according to claim 3, it is characterised in that the projection is multiple, and multiple projections are around described
The inner peripheral surface of connector (30) is arranged at intervals.
5. releasing tool according to claim 2, it is characterised in that the outer peripheral face of the connector (30) has outer silk spiral shell
Line (32), the outer silk screw thread (32) has at least one deformation that the axial direction along the connector (30) is opened up
Otch.
6. releasing tool according to claim 5, it is characterised in that described when the releasing tool is in use state
Limiting section (40) is located at the lower section of the connector (30), when the limiting section (40) is in first working position
When putting, the upper end of the limiting section (40) is abutted with the lower end of the connector (30)；When limiting section (40) is in
During second operating position, the upper end of the limiting section (40) is separated with the lower end of the connector (30).
7. releasing tool according to claim 6, it is characterised in that the described first circumferential drive mechanism (31) is arranged on institute
The side of the remote limiting section (40) of connector (30) is stated, the outer silk screw thread (32) is arranged on the connection
The side of the close limiting section (40) of part (30).
8. releasing tool according to claim 6, it is characterised in that the mandrel component (20) and the connector (30)
Between there is space (33), when the limiting section (40) is from first operating position to second operating position
During change, the space (33) is used to make the connector (30) relative to the sealing drum (10)
Change in location.
9. releasing tool according to claim 8, it is characterised in that the mandrel component (20) is circumferentially provided with direction
The first stop configurations (221) that the space (33) is stretched out, first stop configurations (221) are located at the company
The lower section of fitting (30) simultaneously abuts or separated in the axial direction of the mandrel component (20) with the connector (30),
When the limiting section (40) is in first operating position, first stop configurations (221) and the connector
(30) separate and form movement clearance (331), the movement clearance (331) is one of the space (33)
Point.
10. releasing tool according to claim 1, it is characterised in that the limiting section (40) includes：
The support component (41) for abutting or separating with the connector (30)；
First shearing shear pin (42), the support component (41) is arranged on described by the described first shearing shear pin (42)
On mandrel component (20), when the described first shearing shear pin (42), which is in, does not cut state, the limiting section (40)
In first operating position so that the connector (30) is in screw-threaded coupling state with the sealing drum (10),
When the first shearing shear pin (42) is in cutting state, the limiting section (40) is in second operating position, institute
Limiting section (40) is stated to separate with the connector (30) so that the connector (30) and the sealing drum (10) place
State is released in screw thread.
11. releasing tool according to claim 10, it is characterised in that the support component (41) includes：
It is set in the support set (411) on the outside of the mandrel component (20), the support set (411) and the connector
(30) abut or separate；
Support the first movable part (412) of the support set (411) along the axial direction of the mandrel component (20), described the
One movable part (412) is arranged on the mandrel component (20) by the described first shearing shear pin (42), when the limit
When position portion (40) is in first operating position, first movable part (412) and the support set (411)
Towards formation pressure pocket (112) between the outer peripheral face of the side of the mandrel component (20) and the mandrel component (20),
The side wall of the mandrel component (20) has the first pressure transmission through hole (222), and the inwall of the mandrel component (20) passes through
The first pressure transmission through hole (222) connects with the pressure pocket (112).
12. releasing tool according to claim 11, it is characterised in that first movable part (412) has towards the core
The second stop configurations (4121) that shaft assembly (20) side is stretched out, second stop configurations (4121) are by the pressure-bearing
Chamber (112) is the first sub- cavity (1121) and the second sub- cavity (1122) along the axially spaced of the mandrel component (20),
The first sub- cavity (1121) relative to the described second sub- cavity (1122) close to the connector (30) side,
The first pressure transmission through hole (222) connects with the described second sub- cavity (1122)；First movable part (412) has
The the second pressure transmission through hole (4122) connected with the described first sub- cavity (1121), the side wall of the sealing drum (10) has
3rd pressure transmission through hole (101), the second pressure transmission through hole (4122) connects with the 3rd pressure transmission through hole (101).
13. releasing tool according to claim 12, it is characterised in that the support component (41) also includes：
Seal (413), the seal (413) is arranged on second stop configurations (4121) and the mandrel group
Between the outer peripheral face of part (20)；And/or
Safety collar (414), the safety collar (414) is arranged on the support set (411) and the mandrel component (20)
Outer peripheral face between.
14. releasing tool according to claim 1, it is characterised in that the releasing tool also includes：
It is set in the biography square that can be slided on the mandrel component (20) and along the axial direction of the mandrel component (20)
There is decentralization to pass square position and biography square position of giving up for portion (50), described pass square portion (50)；
Second shearing shear pin (60), pass square portion (50) pass through the described second shearing shear pin (60) and the mandrel group
Part (20) is connected；
When the described second shearing shear pin (60), which is in, does not cut state, the biography square portion (50) is in the decentralization and passed
Square position is so that the locking of the biography square portion (50) and the sealing drum (10) is connected and by the mandrel component (20)
Moment of torsion passes to the sealing drum (10)；When the described second shearing shear pin (60) is in cutting state, the biography square portion
(50) in the biography square position of giving up so that the biography square portion (50) separates with the sealing drum (10) and will be described
The moment of torsion of mandrel component (20) passes to the connector (30).
15. releasing tool according to claim 14, it is characterised in that the releasing tool also includes baffle ring (70), institute
Baffle ring (70) is stated to be set on the mandrel component (20) to limit the motion of biography square portion (50), the biography
Square portion (50) is being located axially at the baffle ring (70) and the sealing drum (10) along the mandrel component (20)
Between.
16. releasing tool according to claim 14, it is characterised in that the direction sealing drum (10) of the biography square portion (50)
One end end face have first pass square structure (521), the sealing drum (10) have and described first pass square structure (521)
Second be engaged passes square structure (102).
17. releasing tool according to claim 16, it is characterised in that described first passes square structure (521) and described second
Pass the concave-convex fit structure that square structure (102) is mutual clamping.
18. releasing tool according to claim 14, it is characterised in that the biography square portion (50), which has, passes square portion described in insertion
(50) at least one sliding elongated hole (522) that side wall is set, the length direction of the sliding elongated hole (522) is described
The axial direction of mandrel component (20).
19. releasing tool according to claim 18, it is characterised in that the mandrel component (20) has at least one moment of torsion
Transmit in block (212), each sliding elongated hole (522) and be embedded with a moment of torsion transmission block (212).
20. releasing tool according to claim 14, it is characterised in that the biography square portion (50) is included along the mandrel component
(20) adjusting set (51) and the second movable part (52) that axial direction is sequentially connected with, the adjusting set (51) and described
Two movable parts (52) are threadedly coupled.
21. releasing tool according to claim 16, it is characterised in that the biography square portion (50) is included along the mandrel component
(20) adjusting set (51) and the second movable part (52) that axial direction is sequentially connected with, the adjusting set (51) and described
Two movable parts (52) are threadedly coupled；Second movable part (52) has described first to pass square structure (521).
22. releasing tool according to claim 18, it is characterised in that the biography square portion (50) is included along the mandrel component
(20) adjusting set (51) and the second movable part (52) that axial direction is sequentially connected with, the adjusting set (51) and described
Two movable parts (52) are threadedly coupled；Second movable part (52) has the sliding elongated hole (522).
23. releasing tool according to claim 20, it is characterised in that the adjusting set (51) and second movable part (52)
Between screw thread rotation direction and the connector (30) and the sealing drum (10) between screw thread rotation it is in opposite direction.
24. releasing tool according to claim 23, it is characterised in that the outer peripheral face of the connector (30) has outer silk spiral shell
Line (32), the outer silk screw thread (32) is left-handed outer silk male thread.
25. releasing tool according to claim 1, it is characterised in that the mandrel component (20) is included along the mandrel group
Top connection (21), upper mandrel (22) and lower mandrel (23) that part (20) is axially sequentially connected with, the top connection (21)
It is threadedly coupled with the upper mandrel (22), the upper mandrel (22) and the lower mandrel (23) threaded connection.
26. releasing tool according to claim 25, it is characterised in that the top connection (21) and the upper mandrel (22)
Between screw thread rotation direction and the connector (30) and the sealing drum (10) screw thread rotation it is in opposite direction；It is described
Screw thread rotation direction and the connector (30) and the sealing between upper mandrel (22) and the lower mandrel (23)
Cylinder (10) screw thread rotation is in opposite direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202766.7A CN107288563B (en) | 2016-03-31 | 2016-03-31 | Releasing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202766.7A CN107288563B (en) | 2016-03-31 | 2016-03-31 | Releasing tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107288563A true CN107288563A (en) | 2017-10-24 |
| CN107288563B CN107288563B (en) | 2023-04-25 |
Family
ID=60087478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610202766.7A Active CN107288563B (en) | 2016-03-31 | 2016-03-31 | Releasing tool |
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| Country | Link |
|---|---|
| CN (1) | CN107288563B (en) |
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| Publication number | Publication date |
|---|---|
| CN107288563B (en) | 2023-04-25 |
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