CN205876269U - But switch sliding sleeve device - Google Patents
But switch sliding sleeve device Download PDFInfo
- Publication number
- CN205876269U CN205876269U CN201620857741.6U CN201620857741U CN205876269U CN 205876269 U CN205876269 U CN 205876269U CN 201620857741 U CN201620857741 U CN 201620857741U CN 205876269 U CN205876269 U CN 205876269U
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- lock
- sliding sleeve
- lock dog
- sealing gasket
- sleeve body
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Abstract
The utility model provides a but switch sliding sleeve device, but includes the switch sliding sleeve: it is fixed with location coupling and lower clutch respectively about the sliding sleeve body. There is the circular bead on smooth moving valve body's upper portion, and the circular bead outside is fixed with the location lock tube. Open a plurality of vertical logical grooves on the section of thick bamboo wall of location lock tube, have the locking boss on the muscle between vertical logical groove. Location coupling internal surface has upper and lower location locking groove to be used for locking the boss locking. The sliding sleeve body has the sliding sleeve body opening, and smooth moving valve body has the smooth moving valve body hole of matched with. There is sealing mechanism sliding sleeve body opening both sides, and opening tool's docking rod bottom port installs the closing device who compresses tightly with the lock tube. Docking rod fixes the locking piece cover, and the locking piece cover has the locking piece hole, and the downthehole locking piece of establishing of locking piece, locking piece have the inclined plane of flange and downward pin. Elasticity piece and locking piece are all downthehole at the middle part of lock tube, and the elasticity piece is between the locking piece. Lock tube and locking piece cover are by the shearing pin nailed joint. A shank diameter of the instrument of closing is greater than the internal diameter that enters the mouth on the circular bead. Realize the multiple repetition switch. The locking is stable from top to bottom, is suitable for all hole conditions.
Description
Art
This utility model belongs to oil gas field downhole tool, particularly to a kind of switchable sliding bush apparatus, including switchable sliding sleeve
And kit.
Background technology
Switchable sliding sleeve the most used uses the switchable sliding sleeve of mechanical type, the switchable sliding sleeve of hydraulic pressure to open with automatically controlled
Close sliding sleeve.
Switchable sliding sleeve operation principle:
Automatically controlled switchable sliding sleeve: transmit the signal of telecommunication by cable, by the servomotor on switchable sliding sleeve, controls sliding sleeve
Open and close.
The switchable sliding sleeve of mechanical type: control sliding sleeve by lower steel wire connecting valve instrument and open and close.
The switchable sliding sleeve of fluid pressure type: during tubing string operation, if desired for opening sliding sleeve, then suppresses in oil pipe, transmits hydraulic pressure signal
Control sliding sleeve to open and close.
The problem that current switchable sliding sleeve exists:
(1) the switchable sliding sleeve of fluid pressure type opens and closes by suppressing control sliding sleeve, and signal is not easy to judge, signal shows
Showing inconspicuous, signal is the most chaotic.
(2) control sliding sleeve by switching tools under lower steel wire to open and close, it is impossible to be applicable to the big well of gradient or water
Horizontal well, because casing programme affects, the scope of application is limited to.
(3) although automatically controlled switchable sliding sleeve transmission signal is accurate, suitable water horizontal well, high angle hole.But due to instrument cost
Too high, it is unfavorable for promoting.
Utility model content
The purpose of this utility model is to overcome above deficiency, it is provided that a kind of machinery can open the switchable sliding sleeve dress that can close
Put, open and close signal obvious.
The technical scheme is that
A kind of switchable sliding bush apparatus, including switchable sliding sleeve.
Technical points is:
Switchable sliding sleeve includes positioning box cupling, location lock tube, sleeve body, slide valve and lower contact.Position the upper of box cupling
Portion is provided with land in porch.
The upper inner of sleeve body and the fixing connection of location box cupling lower outside.
The lower inside of sleeve body and the fixing connection of the lower outside of lower contact.
The top of slide valve is provided with shoulder, and the lower inside of outside shoulder and location lock tube is fixing to be connected.
Location lock tube is set in inside the box cupling of location.Slide valve is positioned at inside sleeve body.
Location lock tube is the tubular of upper and lower opening, offers multiple vertical groove, the muscle between vertical groove on barrel
Being provided with locking boss, the lower edges of locking boss is inclined-plane.
The inner surface of location box cupling is provided with position and lock groove and lower position and lock groove, and locking boss is used for catching up with positioning lock
Determine groove or lower position and lock slot lock is fixed.
The lower edges of upper position and lock groove is inclined-plane, closes with lock tab edge of table matching form.
The lower edges of lower position and lock groove is inclined-plane, closes with lock tab edge of table matching form.
Offer at least one sliding sleeve body opening on sleeve body, slide valve offers at least one slide-valve body opening, sliding
The position of set body opening and the position of slide-valve body opening cooperate.
The both sides of sliding sleeve body opening are all set with sealing mechanism, and sealing mechanism is between sleeve body and slide valve.
Each sealing mechanism all includes sealing ring, and sealing ring is respectively provided on two sides with first sealing gasket, Mei Ge up and down
It is respectively provided with second sealing gasket outside one sealing gasket, outside each second sealing gasket, is respectively provided with a metal gasket.
Also include opener: opener includes opening box cupling and to extension bar.
Open box cupling and connected by fixing between extension bar.
To offering hole bottom extension bar, the hold down gag that in hole, installing compresses with lock tube.
Extension bar bottom outside is fixedly connected with lock dog set, and lock dog puts and offers at least two lock dog hole, each lock dog
Being equipped with a lock dog in hole, lock dog is provided with upper flange, also has from upper flange edge downwards, simultaneously to docking rod axis direction
The inclined-plane tilted.
Lock dog upper flange is outwards arranged from lock dog hole.
Elastomer block and lock dog are arranged in the mider hole of lock tube, and lock tube lower limb has lock tube boss.Elastomer block is arranged on
Between at least two lock dog.
Lock dog puts and is provided with the lock dog set boss corresponding with lock tube boss, the most spacing.
It is internal that lock tube is set in lock dog set.
Lock tube and lock dog set are connected along the shear pin being radially arranged of lock dog set by least one.Shear pin position
Below lock dog.
Hold down gag includes spring base, spring and fixing plug.
Spring base is arranged on bottom to the hole described in offering bottom extension bar, both ends of the spring respectively with spring base and being arranged on
Fixing plug above lock tube is supported mutually.
At least one pore is offered on lock dog set below shear pin.
Also close instrument: cut out instrument includes cut out box cupling and the pole being mutually permanently connected.
The diameter of pole is more than the internal diameter of slide valve shoulder upper inlet.
The sealing ring of sealing mechanism and sealing gasket can be following structure:
The external surface shape of the upper and lower both sides of sealing ring matches with the first corresponding sealing gasket inner surface configuration respectively, and first
The external surface shape of the upper and lower both sides of sealing gasket matches, on the second sealing gasket with the second corresponding sealing gasket inner surface configuration respectively
The external surface shape of lower both sides matches with corresponding metal gasket inner surface configuration respectively.
The upper sealing ring of installing between sleeve body and location box cupling.
Lower seal is installed between sleeve body and lower contact.
First sealing gasket is politef pad, and the second sealing gasket is rubber blanket.
Sealing ring is annular.
Inner surface arc and the sealing ring surface arc of the first sealing gasket match.
The outer surface of the first sealing gasket is outer convex, and the second sealing gasket inner surface is the outer surface shape with the first sealing gasket
The indent arc that shape matches.
The outer surface of the second sealing gasket is outer convex, and metal gasket inner surface is the external surface shape phase with the second sealing gasket
The indent arc coordinated.
Opener is connected, with sucker rod connection closed instrument during closedown sliding sleeve with sucker rod during open sliding sleeve.
Improve switchable sliding sleeve sealing stability by sealing structure, can realize switch is repeated several times.Connect with sucker rod
Opener and the instrument of closedown open and close switchable sliding sleeve, applicable all hole conditions, and open sliding sleeve and move with closedown sliding sleeve
Make separate,
1, open sliding sleeve: when being to connect, by sucker rod, the slide valve position that opener is lowered into switchable sliding sleeve,
Angle effect is drawn due to inclined-plane in opener lock dog lower end, and lock dog compressing rubber reclaims, and opener can be by platform in slide valve
Shoulder, then on when carrying opener, instrument lock dog upper end convex platform due to without drawing angle, opener lock dog distending and switchable sliding sleeve
The slide valve shoulder of inner chamber tangles, and above carries sucker rod lock dog and drives and be about to sleeve body hole on slide valve and slide-valve body opening leads to
Road open, positioning lock put elastic locking boss by position position and lock groove under box cupling go upward to position box cupling upper position and lock
Groove also locks, and positioning lock set top edge withstands with upper land, and continuation carries sucker rod, and on opener, shear pin is cut off, lock
Block loses spacing, and lock dog reclaims and declines, and drives lock tube to decline, and the spring of hold down gag press against fixing plug auxiliary and helps under lock tube
Fall.When next time uses, reinstall shear pin.
Opener separates with the slide valve shoulder of switchable sliding sleeve, and breakdown action completes.
2, sliding sleeve is closed: be to be lowered into switchable sliding sleeve inner chamber by sucker rod connection closed instrument, owing to closing instrument
Pole external diameter is more than switchable sliding sleeve slide valve upper inlet shoulder internal diameter, drives along with sucker rod tubing string transfers the instrument that turns off
Slide valve resets, and positioning lock puts flexibly positioned locking boss and come downwards to position under box cupling by positioning position and lock groove on box cupling
Position and lock groove also locks, and closing motion completes.
Accompanying drawing explanation
Fig. 1 shows switchable shift sleeve structure schematic diagram.
Fig. 2 shows opener structural representation.
Fig. 3 shows closedown tool construction schematic diagram.
Fig. 4 shows switchable sliding sleeve locking mechanism partial enlarged drawing.(locking boss, upper and lower position and lock groove).
Fig. 5 is the structural representation of location lock tube.
The partial enlarged drawing in C portion in Fig. 6 diagram 1.
Position box cupling 1, location lock tube 2, sleeve body 3, slide valve 4, sealing mechanism 5, lower contact 6, sliding sleeve body opening 7, slide
Moving valve hole 8, vertical groove 9, muscle 10, locking boss 11, upper position and lock groove 12, lower position and lock groove 13, sealing ring 14, the
One sealing gasket the 15, second sealing gasket 16, metal gasket 17, open box cupling 18, to extension bar 19, spring base 20, spring 21, fixing plug
22, lock dog set 23, lock dog hole 24, lock dog 25, upper flange 26, inclined-plane 27, elastomer block 28, lock tube 29, shear pin 30, closedown connect
Hoop 31, pole 32, pore 33 and upper land 34.
Have an advantage in that:
1, the most corresponding opener of the opening and closing of switchable sliding sleeve and switching tools, switchable sliding sleeve is repeatable to be opened
Closing, and action is simple, signal obvious, the property of can determine whether is strong.2, sliding sleeve seal form uses combined labyrinth and carbon gland, seals more reliable.3、
The opening and closing stable load of switchable sliding sleeve, is not to control latching force by traditional shear pin power, but by flexibly positioned lock
Set provides latching force, is not disturbed by other factors, does not haves misoperation.
Detailed description of the invention
A kind of switchable sliding bush apparatus, including switchable sliding sleeve.
Switchable sliding sleeve includes positioning box cupling 1, location lock tube 2, sleeve body 3, slide valve 4 and lower contact 6.Location box cupling
Land 34 it is provided with at the upper entrance of 1.
The upper inner of sleeve body 3 and location box cupling 1 lower outside screwed connection.
The lower inside of sleeve body 3 and the lower outside screwed connection of lower contact 6.
The top of slide valve 4 is provided with shoulder, the lower inside screwed connection of outside shoulder and location lock tube 2.
Location lock tube 2 is set in inside the box cupling 1 of location.Slide valve 4 is positioned at inside sleeve body 3.
Location lock tube 2 is the tubular of upper and lower opening, offers multiple vertical groove 9, between vertical groove 9 on barrel
Muscle 10 is provided with locking boss 11, and the lower edges of locking boss 11 is inclined-plane.Arrange multiple groove 9 to make to position lock tube 2
There is certain elasticity.
The inner surface of location box cupling 1 is provided with position and lock groove 12 and lower position and lock groove 13, when switchable sliding sleeve is opened,
Locking boss 11 and upper position and lock groove 12 coordinate locking, as shown in location A in Fig. 4, when switchable sliding sleeve is closed, lock boss
11 and lower position and lock groove 13 coordinate locking, as shown in B location in Fig. 4.
The lower edges of upper position and lock groove 12 is inclined-plane, matches with the edge shape of locking boss 11.
The lower edges of lower position and lock groove 13 is inclined-plane, matches with the edge shape of locking boss 11.
Offer two the sliding sleeve body openings 7 being arranged on circle diameter on sleeve body 3, slide valve 4 offers setting
Two slide-valve body openings 8 on circle diameter, the position of sliding sleeve body opening 7 is corresponding with the position of slide-valve body opening 8, the most switchable
Sliding sleeve is open mode, and staggering in the position of sliding sleeve body opening 7 and the position of slide-valve body opening 8, the most switchable sliding sleeve is closed mode.
The both sides of sliding sleeve body opening 7 are all set with sealing mechanism 5, and sealing mechanism 5 is between sleeve body 3 and slide valve 4.
Each sealing mechanism 5 all include sealing ring 14, sealing ring about 14 be respectively provided on two sides with an inner surface configuration and
The first sealing gasket 15 that sealing ring 14 external surface shape matches, is respectively provided with an inner surface shape outside each first sealing gasket 15
The second sealing gasket 16 that shape and the first sealing gasket 15 external surface shape match, is respectively provided with one outside each second sealing gasket 16
The metal gasket 17 that inner surface configuration and the second sealing gasket 16 external surface shape match.
Also include opener: opener includes opening box cupling 18 and to extension bar 19.
Open box cupling 18 and pass through screwed connection between extension bar 19.
To offering hole bottom extension bar 19, the hold down gag that in hole, installing compresses with lock tube 29.
Hold down gag includes spring base 20, spring 21 and fixing plug 22.
Spring base 20 is arranged on bottom to the hole offered bottom extension bar 19, spring 21 two ends respectively with spring base 20 and arrange
Fixing plug 22 phase above lock tube 29 is supported.
Extension bar 19 bottom outside screwed connection is had lock dog set 23, lock dog set 23 offers two and is arranged on circle diameter
On lock dog hole 24, be equipped with a lock dog 25 in each lock dog hole 24, lock dog 25 is provided with upper flange 26, also have from upper flange 26
Edge downwards, simultaneously to the inclined-plane 27 that extension bar 19 axis direction is tilted.
According to the most inside and outside movement position of lock dog 25, the length that upper flange 26 stretches out lock dog hole 24 is different.Two lock dogs
Elastomer block 28 it is provided with between 25.
Lock dog 25 upper flange 26 is outwards arranged from lock dog hole 24.
Elastomer block 28 and lock dog 25 are arranged in the mider hole of lock tube 29, and lock tube 29 lower limb has lock tube boss.
Lock dog set 23 is provided with the lock dog set boss corresponding with lock tube boss, the most spacing.
It is internal that lock tube 29 is set in lock dog set 23.
When opener is in off working state:
Lock tube 29 and lock dog set 23 are connected by two shear pins 30 arranged along the diametric(al) of lock dog set 23.Cut
Cut pin 30 to be positioned at below lock dog 25.
Two pores 33 are offered on lock dog set 23 below shear pin 30.
Also close instrument: cut out instrument includes cut out box cupling 31 and the pole 32 of mutual screwed connection.
The diameter of pole 32 is more than the internal diameter of slide valve 4 shoulder upper inlet.
The upper sealing ring of installing between sleeve body 3 and location box cupling 1.
Lower seal is installed between sleeve body 3 and lower contact 6.
First sealing gasket 15 is politef pad, and the second sealing gasket 16 is rubber blanket.
Sealing ring 14 is annular.
Inner surface arc and the sealing ring 14 surface arc of the first sealing gasket 15 match.
The outer surface of the first sealing gasket 15 is outer convex, the second sealing gasket 16 inner surface be with the first sealing gasket 15 outside
The indent arc that surface configuration matches.
The outer surface of the second sealing gasket 16 is outer convex, and metal gasket 17 inner surface is and the outer surface of the second sealing gasket 16
The indent arc that matching form closes.
Elastomer block 28 is made for compressing rubber.Metal gasket 17 is copper packing.
Open sliding sleeve: be connected between two packers enter down by oil pipe the most respectively during the work of switchable sliding sleeve
To production operation layer.
Switchable sliding sleeve original state is closed mode (as shown in Figure 1), and the locking boss 11 of location lock tube 2 is locked in location
In 1 time position and lock groove 13 of box cupling, provide initial lock power for valve body assembly, lock when without opener effect reliably,
Firmly.
When needs switchable sliding sleeve place produced layer produce time, use corresponding sucker rod to connect after opener, under enter
In flow string, transfer opener to contacting with switchable sliding sleeve.Continuing to transfer opener, transferring load increases to institute
After needing load, after opener lock dog 25 elasticity of compression block 28 rubber, lock dog 25 shrinks, and opener enters in slide valve 4
Portion, owing to latus rectum becomes the expansion of big lock dog 25, now opener and slide valve 4 shoulder successful connection.Opener is carried on again
To required initial load, the locking boss 11 of location lock tube 2 separates with location 1 time position and lock groove 13 of box cupling, above puies forward process
The locking boss 11 of middle location lock tube 2 enters the upper position and lock groove 12 of location box cupling 1, and slide valve 4 is lockable, switchable cunning
Set is opened successfully, and sliding sleeve body opening 7 and slide-valve body opening 8 are to upper.Carry opener in continuation and open work to required disengagement load
Tool separates with switchable valve body.Just this production layer can be carried out production operation after taking out opener.
Close sliding sleeve: when needs produce layer stopping production to sliding sleeve place, use corresponding sucker rod connection closed instrument
After, it is lowered in flow string, transfers closedown instrument to contacting with sliding sleeve inner valve body assembly.Continue to transfer closedown instrument to reach to close
After closing initial load, owing to the diameter of pole 32 is more than the internal diameter of shoulder upper inlet, the locking of the location lock tube 2 of switchable sliding sleeve
Boss 11 separates with position and lock groove 12 on the box cupling 1 of location, and locking boss 11 enters the lower position and lock groove 13 of location box cupling 1
In, sliding sleeve valve body assembly is successfully closed.Just other can be produced layer after taking out closedown instrument and carry out production operation.
Claims (10)
1. a switchable sliding bush apparatus, including switchable sliding sleeve；It is characterized in that:
Switchable sliding sleeve includes positioning box cupling (1), location lock tube (2), sleeve body (3), slide valve (4) and lower contact (6)；Fixed
It is provided with land (34) at the upper entrance of position box cupling (1)；
The upper inner of sleeve body (3) and the fixing connection of location box cupling (1) lower outside；
The lower inside of sleeve body (3) and the fixing connection of the lower outside of lower contact (6)；
The top of slide valve (4) is provided with shoulder, and the lower inside of outside shoulder and location lock tube (2) is fixing to be connected；
Location lock tube (2) is set in inner side, location box cupling (1)；Slide valve (4) is positioned at sleeve body (3) inner side；
Location lock tube (2) is the tubular of upper and lower opening, offers multiple vertical groove (9), between vertical groove (9) on barrel
Muscle (10) be provided with locking boss (11), locking boss (11) lower edges be inclined-plane；
The inner surface of location box cupling (1) is provided with position and lock groove (12) and lower position and lock groove (13), and locking boss (11) is used
In catching up with position and lock groove (12) or lower position and lock groove (13) locking；
The lower edges of upper position and lock groove (12) is inclined-plane, matches with the edge shape of locking boss (11)；
The lower edges of lower position and lock groove (13) is inclined-plane, matches with the edge shape of locking boss (11)；
Offering at least one sliding sleeve body opening (7) on sleeve body (3), slide valve offers at least one slide valve on (4)
Hole (8), the position of sliding sleeve body opening (7) and the position of slide-valve body opening (8) cooperate；
The both sides of sliding sleeve body opening (7) are all set with sealing mechanism (5), and sealing mechanism (5) is positioned at sleeve body (3) and slide valve (4)
Between；
Each sealing mechanism (5) all includes that sealing ring (14), sealing ring (14) are respectively provided on two sides with first sealing gasket up and down
(15), each first sealing gasket (15) outside is respectively provided with second sealing gasket (16), and each second sealing gasket (16) outside is all
One metal gasket (17) is set.
The switchable sliding bush apparatus of one the most according to claim 1, it is characterised in that
Also include opener: opener includes opening box cupling (18) and to extension bar (19)；
Open box cupling (18) and connect fixing between extension bar (19)；
Hole is offered in extension bar (19) bottom, the hold down gag that in hole, installing and lock tube (29) compress；
Extension bar (19) bottom outside is fixedly connected with lock dog set (23), lock dog set (23) offers at least two lock dog hole
(24), being equipped with a lock dog (25) in each lock dog hole (24), lock dog (25) is provided with upper flange (26), also has from upper flange
(26) edge is downwards, simultaneously to the inclined-plane (27) tilting extension bar (19) axis direction；
Lock dog (25) upper flange (26) is outwards arranged from lock dog hole (24)；
Elastomer block (28) and lock dog (25) are arranged in the mider hole of lock tube (29), and lock tube (29) lower limb has lock tube boss；
Elastomer block (28) is arranged between at least two lock dog (24)；
Lock dog set (23) is provided with the lock dog set boss corresponding with lock tube boss, the most spacing；
It is internal that lock tube (29) is set in lock dog set (23)；
Lock tube (29) and lock dog set (23) are connected along the shear pin (30) being radially arranged of lock dog set (23) by least one
Connect；Shear pin (30) is positioned at lock dog (25) lower section.
The switchable sliding bush apparatus of one the most according to claim 2, it is characterised in that: hold down gag includes spring base
(20), spring (21) and fixing plug (22)；
Spring base (20) is arranged on bottom to the described hole offered, extension bar (19) bottom, spring (21) two ends respectively with spring base
(20) support mutually with the fixing plug (22) being arranged on lock tube (29) top.
The switchable sliding bush apparatus of one the most according to claim 2, it is characterised in that:
The lock dog set (23) of shear pin (30) lower section offers at least one pore (33).
The switchable sliding bush apparatus of one the most according to claim 1, it is characterised in that: also close instrument: close instrument
Including the closedown box cupling (31) being mutually permanently connected and pole (32)；
The diameter of pole (32) is more than the internal diameter of slide valve (4) shoulder upper inlet.
The switchable sliding bush apparatus of one the most according to claim 1, it is characterised in that: outside sealing ring (14) both sides up and down
Surface configuration matches with corresponding the first sealing gasket (15) inner surface configuration respectively, outside the first sealing gasket (15) both sides up and down
Surface configuration matches with corresponding the second sealing gasket (16) inner surface configuration respectively, outside the second sealing gasket (16) both sides up and down
Surface configuration matches with corresponding metal gasket (17) inner surface configuration respectively.
The switchable sliding bush apparatus of one the most according to claim 1, it is characterised in that: sleeve body (3) and location box cupling (1)
Between the upper sealing ring of installing；
Lower seal is installed between sleeve body (3) and lower contact (6)；
First sealing gasket (15) is politef pad, and the second sealing gasket (16) is rubber blanket；
Sealing ring (14) is annular；
Inner surface arc and sealing ring (14) the surface arc of the first sealing gasket (15) match；
The outer surface of the first sealing gasket (15) is outer convex, and the second sealing gasket (16) inner surface is and the first sealing gasket (15)
The indent arc that external surface shape matches；
The outer surface of the second sealing gasket (16) is outer convex, and metal gasket (17) inner surface is and the appearance of the second sealing gasket (16)
The indent arc that face matching form closes.
The switchable sliding bush apparatus of one the most according to claim 2, it is characterised in that: elastomer block (28) is compressing rubber system
Become；Metal gasket (17) is copper packing.
The switchable sliding bush apparatus of one the most according to claim 1, it is characterised in that: sliding sleeve body opening (7) is two, arranges
Position corresponding on sleeve body (3) circle diameter,
Slide-valve body opening (8) is two, is arranged on position corresponding on slide valve (4) circle diameter.
The switchable sliding bush apparatus of one the most according to claim 2, it is characterised in that:
Lock dog hole (24) is two, is arranged on position corresponding on lock dog set (23) circle diameter, and shear pin (30) is two
Individual.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620857741.6U CN205876269U (en) | 2016-08-10 | 2016-08-10 | But switch sliding sleeve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620857741.6U CN205876269U (en) | 2016-08-10 | 2016-08-10 | But switch sliding sleeve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205876269U true CN205876269U (en) | 2017-01-11 |
Family
ID=57703988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620857741.6U Active CN205876269U (en) | 2016-08-10 | 2016-08-10 | But switch sliding sleeve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205876269U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723410A (en) * | 2019-03-24 | 2019-05-07 | 西南石油大学 | A kind of umbrella-type exploitation tool of gas hydrates solid state fluidizing exploitation |
| CN117514076A (en) * | 2023-10-26 | 2024-02-06 | 西南石油大学 | Infinite pole switchable positioning sliding sleeve system |
-
2016
- 2016-08-10 CN CN201620857741.6U patent/CN205876269U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723410A (en) * | 2019-03-24 | 2019-05-07 | 西南石油大学 | A kind of umbrella-type exploitation tool of gas hydrates solid state fluidizing exploitation |
| CN109723410B (en) * | 2019-03-24 | 2021-10-01 | 西南石油大学 | Umbrella type mining tool for solid-state fluidization mining of natural gas hydrate |
| CN117514076A (en) * | 2023-10-26 | 2024-02-06 | 西南石油大学 | Infinite pole switchable positioning sliding sleeve system |
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