CN108661592A - Tubing plug - Google Patents
Tubing plug Download PDFInfo
- Publication number
- CN108661592A CN108661592A CN201710194060.5A CN201710194060A CN108661592A CN 108661592 A CN108661592 A CN 108661592A CN 201710194060 A CN201710194060 A CN 201710194060A CN 108661592 A CN108661592 A CN 108661592A
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- China
- Prior art keywords
- outer barrel
- piston
- inlet opening
- tubing plug
- shear pin
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
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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)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a kind of tubing plugs, belong to field of petroleum exploitation.The tubing plug includes：Top connection, middle core bar, fishing head, outer barrel, packer, sheath, locking device, home record head, piston, piston bush and lower contact；It is provided with sealing ring in the piston bush, the cavity that the lower contact, the piston are formed with the piston bush is divided into first annular seal space body and the second seal cavity by the sealing ring, it is provided with the first inlet opening on the piston positioned in first annular seal space body, it is provided with the second inlet opening on the piston being located in the second seal cavity, third inlet opening is provided on the center-pole.The present invention on piston by being arranged the first inlet opening and the second inlet opening so that tubing plug not only can be setting, but also can unseal, and solves the problems, such as that the use scope of the tubing plug of the prior art is smaller.The present invention is for blocking oil pipe.
Description
Technical field
The present invention relates to field of petroleum exploitation, more particularly to a kind of tubing plug.
Background technology
Currently, when Oil Field carries out operation, in order to keep stratum energy, mitigates environmental pollution, work with pressure is usually taken
Industry mode.When carrying out Operating Pressure, it usually needs blocked to oil pipe.
The prior art is exactly to be blocked to oil pipe using tubing plug before lower oil tube, ensures Operating Pressure
Be smoothed out.In practical applications, it when tubing string occur and the situations such as blocking, needs to take out tubing plug, and it is current
In used tubing plug, can realize taking-up is all preset type oil-pipe blanking plug, that is, needs to match with preset seating nipple
Set uses.It is set due to current tubing plug once putting into, the setting force of itself can not be eliminated, so once coming into operation
Cannot pull out come, can only with tubing string rise pit shaft, once tubing string pulled out by card it is motionless, there are well will heavy repair task wind
Danger.
In the implementation of the present invention, the inventor finds that the existing technology has at least the following problems：
Due to preset seating nipple, position is fixed, thus defines the placement position of tubing plug, leads to oil
The use scope of blockage device is smaller, therefore the applicability of current tubing plug is relatively low.
Invention content
Use scope in order to solve the problems, such as the tubing plug of the prior art is smaller, and the present invention provides a kind of oil
Blockage device.The technical solution is as follows：
A kind of tubing plug is provided, including：
Top connection, middle core bar, fishing head, outer barrel, packer, sheath, locking device, home record head, piston, piston bush and under
Connector；
One end of the middle core bar is connect with the top connection, the fishing head, the outer barrel, the piston and it is described under
Connector is sequentially connected with, and the outer sleeve is sequentially socketed with the packer and the shield on the middle core bar on the outer barrel
Set, the locking device are arranged in the cavity that the outer barrel and the sheath are formed, the home record head be located at the piston and
In the cavity that the core bar is formed；
Packer includes：Pressing plate when the pressing plate is clamped with the outer barrel, generates resistance to the box cupling gap of oil pipe, makes
The pressure board is in the box cupling gap of the oil pipe；
It is provided with sealing ring in the piston bush, the sealing ring is by the lower contact, the piston and the piston bush
The cavity of formation is divided into first annular seal space body and the second seal cavity, is set on the piston positioned in first annular seal space body
It is equipped with the first inlet opening, the second inlet opening, the center-pole are provided on the piston being located in the second seal cavity
On be provided with third inlet opening；
It is both provided with sealing structure in first inlet opening, second inlet opening and third inlet opening both sides；
The fishing head and the middle core bar are connect by the first shear pin of giving up, and the piston bush passes through with the lower contact
Second gives up shear pin connection, and the packer and the outer barrel are connect by the first deblocking shear pin, the home record head and it is described in
Core bar is unsealed shear pin by third with the sheath and is connect by the second deblocking shear pin connection, the locking device；
Wherein, when lifting the top connection, the described first shear pin of giving up is cut, and the first annular seal space body passes through institute
It states the first inlet opening and enters liquid, so that the described second shear pin of giving up is cut under pressure, the piston bush is to the shield
Set, the locking device and the packer act power, can make the sky between the packer sealing outer barrel and oil pipe
Between, when the locking device is locked, complete setting；
When lifting the fishing head, the first deblocking shear pin and third deblocking shear pin are cut, the outer barrel
Mobile, the locking device unlock makes the pressing plate be released with the outer barrel and is clamped, and the pressing plate stitches the box cupling of the oil pipe
After the resistance of gap disappears, when lift the top connection, described second, which unseals shear pin, is cut, second inlet opening with it is described
Third inlet opening is connected to, and second seal cavity enters liquid, and the packer releases the space between outer barrel and oil pipe
Deblocking is completed in sealing.
Optionally, the locking device includes：The pawl and the sheath that are arranged on the outer barrel predeterminated position with
Fixed ring, lock ring and the shelves ring being arranged between the outer barrel, the fixed ring, the lock ring and the shelves ring are sequentially socketed in institute
State on outer barrel, when the lock ring is set for the tubing plug with the pawl cooperation fix, the fixed ring with it is described
Sheath unseals shear pin connection by the third.
Optionally, the packer includes：Slip spider, slips, cone and seal assembly, the slip spider, the slips,
The cone and the seal assembly are sequentially socketed on the outer barrel,
The slip spider unseals shear pin by described first with the outer barrel and connect；
One end of the slips is connect with the slip spider, and the other end of the slips is connect with the cone；
The slip spider is provided with n pressing plate groove, and the pressing plate is provided in each pressing plate groove and is matched with the pressing plate
The pin of conjunction, the pressing plate can rotate on the pin；
The n is positive integer, and 2≤n≤4.
Optionally, the seal assembly includes：Multiple sealing drums,
Spacer ring is provided between sealing drum described in each two.
Optionally, the seal assembly includes：One sealing drum.
Optionally, the seal assembly further includes：Voussoir and elastic claw, the voussoir are sleeved on described outer with the elastic claw
On cylinder.
Optionally, the multiple sealing drum is two sealing drums.
Optionally, the sealing drum is packing element.
Optionally, m slips hole is provided on the slip spider, the packer includes：M slips, each card
Watt one end connect with slip spider by slips hole, the m be greater than or equal to 2.
Optionally, the m is equal to 3.
The advantageous effect that technical solution provided by the invention is brought is：
By the way that the first inlet opening and the second inlet opening are arranged on piston, when liquid enters the first sealing from the first inlet opening
When cavity, first annular seal space body and the second seal cavity form pressure difference, tubing plug complete it is setting, when liquid from second into
When fluid apertures enters the second seal cavity, the pressure difference of first annular seal space body and the formation of the second seal cavity disappears, tubing plug
Deblocking is completed, in the case where not needing preset seating nipple, can realize the setting of tubing plug and deblocking, and solving
When envelope is completed, which can be salvaged from oil pipe and, effectively increase the tubing plug uses model
It encloses, improves the applicability of tubing plug.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1-1 is the structural schematic diagram of part on a kind of tubing plug provided in an embodiment of the present invention；
Fig. 1-2 is a kind of structural schematic diagram of tubing plug lower part provided in an embodiment of the present invention；
Fig. 1-3 is partial enlarged view of the tubing plug provided in an embodiment of the present invention at A；
Fig. 1-4 is partial enlarged view of the tubing plug provided in an embodiment of the present invention at B；
Fig. 1-5 is partial enlarged view of the tubing plug provided in an embodiment of the present invention at C；
Fig. 1-6 is partial enlarged view of the tubing plug provided in an embodiment of the present invention at D；
Fig. 1-7 is partial enlarged view of the tubing plug provided in an embodiment of the present invention at E；
Fig. 2-1 is a kind of stereogram of tubing plug provided in an embodiment of the present invention；
Fig. 2-2 is a kind of stereogram of tubing plug lower end provided in an embodiment of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
An embodiment of the present invention provides a kind of tubing plugs, and as described in Fig. 1-1 and Fig. 1-2, Fig. 1-1 is implementation of the present invention
The structural schematic diagram of part on a kind of tubing plug that example provides, Fig. 1-2 are that a kind of oil pipe provided in an embodiment of the present invention is stifled
Fill in the structural schematic diagram of device lower part.The tubing plug may include：
Top connection 10, middle core bar 20, fishing head 30, outer barrel 40, packer 50, sheath 61, locking device 62, home record head
71, piston 72, piston bush 73 and lower contact 80.
One end of middle core bar 20 is threadedly coupled with top connection 10, and fishing head 30, outer barrel 40, piston 72, lower contact 80 pass through
Screw thread is sequentially connected with, and outer barrel 40 is sleeved on middle core bar 20, and packer 50 and sheath 61 are sequentially socketed on outer barrel 40.Wherein, it locks
Tight device 62 is arranged in the cavity that outer barrel 40 and sheath 61 are formed, and home record head 71 is located at the chamber that piston 72 is formed with middle core bar 20
In vivo.
Packer 50 may include：When pressing plate 511a, pressing plate 511a are clamped with the step structure in outer barrel 40, to oil pipe
Box cupling gap generate resistance, so that pressing plate 511a is stuck in the box cupling gap of oil pipe.
Sealing ring 731 is provided in piston bush 73, sealing ring 731 forms lower contact 80, piston 72 with piston bush 73
Cavity is divided into first annular seal space body 731a and the second seal cavity 731b, is set on the piston 72 in first annular seal space body 731a
It is equipped with the first inlet opening 721, the second inlet opening 722, middle core bar are provided on the piston 72 in the second seal cavity 731b
Third inlet opening 21 is provided on 20.It is respectively provided in the first inlet opening 721, the second inlet opening 722 and 21 both sides of the second inlet opening
There is sealing structure 7311, which can be identical with the structure of sealing ring 731, liquid can be hindered to enter first close
It seals in cavity 731a or the second seal cavity 731b.In order to it is clearer expression piston 72 on middle core bar 20 inlet opening it is opposite
Position, offer tubing plug of the embodiment of the present invention are located at the partial enlarged view at A and at B, please refer to Fig.1-3 and Fig. 1-4, scheme
1-3 is partial enlarged view of the tubing plug provided in an embodiment of the present invention at A, and Fig. 1-4 is provided in an embodiment of the present invention
Specific reference numeral can be with reference chart 1-2, herein in partial enlarged view of the tubing plug at B, the Fig. 1-3 and Fig. 1-4
It does not repeat.
Fishing head 30 and middle core bar 20 are connect by the first shear pin 011 of giving up, and piston bush 72 passes through second with lower contact 80
Shear pin 012 of giving up connects, and packer 50 is connect with outer barrel 40 by the first deblocking shear pin 021, and home record head 71 is logical with middle core bar 20
It crosses the second deblocking shear pin 022 to connect, locking device 62 unseals shear pin 023 by third with sheath 61 and connect.
Wherein, when lifting top connection 10, the first shear pin 011 of giving up is cut, and first annular seal space body 731a passes through first
Inlet opening 721 enters liquid, first annular seal space body 731a and the second seal cavity 731b formation pressure difference, makes second to give up shear pin
012 is cut under pressure action, and 72 sets of piston acts power to sheath 61, locking device 62 and packer 50, can make
It is completed setting when locking device 62 is locked in space between 50 sealed outer cylinder 40 of packer and oil pipe.
When lifting fishing head 30, the first deblocking shear pin 021 and third deblocking shear pin 023 are cut, and outer barrel 40 moves, lock
Tight device 62 unlocks, and so that pressing plate 511a is released with the step structure in outer barrel 40 and is clamped, box cupling gaps of the pressing plate 511a to oil pipe
Resistance disappear after, when lift top connection 10, second unseal shear pin 022 is cut, the second inlet opening 722 and the second inlet opening
21 connections, the second seal cavity 731b enter liquid, and first annular seal space body 731a and the second seal cavity 731b pressure differences disappear,
72 sets of piston disappears to the active force of sheath 61, locking device 62 and packer 50, packer 50 release outer barrel 40 and oil pipe it
Between space sealing, complete deblocking.
In conclusion tubing plug provided in an embodiment of the present invention, by the way that the first inlet opening and are arranged on piston
Two inlet openings, when liquid enters first annular seal space body from the first inlet opening, first annular seal space body is formed with the second seal cavity
Pressure difference, tubing plug complete it is setting, when liquid from the second inlet opening enter the second seal cavity when, first annular seal space body with
The pressure difference that second seal cavity is formed disappears, and tubing plug completes deblocking, in the case where not needing preset seating nipple,
It can realize the setting of tubing plug and deblocking, and when unsealing completion, which can be beaten from oil pipe
It pulls out and, effectively increase the use scope of the tubing plug, improve the applicability of tubing plug.
Optionally, -1 is please referred to Fig.1, packer 50 may include：Slip spider 51, slips 52, cone 53 and seal assembly
54, slip spider 51, slips 52, cone 53 and seal assembly 54 are sequentially socketed on outer barrel 40.
N pressing plate groove 511 is set on slip spider 51, wherein n is positive integer, and 2≤n≤4.In each pressing plate groove 511
It is provided with pressing plate 511a and pin 511b, multiple pressing plate 511a is evenly distributed in slip spider 51 in the radial direction, the pressure
The pin hole 511c with pin 511b cooperations is provided in plate 511a, pressing plate 511a can be rotated around pin 511b.Work as oil
When blockage device blocks oil pipe, at this point, one end of pressing plate 511a is clamped with the step structure in outer barrel 40, pressing plate 511a's is another
It holds and resistance is generated to the box cupling gap of oil pipe, pressing plate 511a is made to be stuck in the box cupling gap of oil pipe.In order to which clearer expression is pressed
Plate 511a pressing plate groove 511 position relationship, the embodiment of the present invention provide tubing plug be located at the partial enlarged view at C, ask
It is partial enlarged view of the tubing plug provided in an embodiment of the present invention at C with reference to figure 1-5, Fig. 1-5, it is specific in the Fig. 1-5
Reference numeral can be not repeated herein with reference chart 1-1.
It is additionally provided with m slips hole 512 on slip spider 51, m is positive integer, and m >=2, it is preferred that m=3, namely in card
Three slips holes 512 are set on watt seat 51.Each 52 one end of slips is connect by slips hole 512 with slip spider 51, namely each
Slips 52 is respectively connected on slips hole 512, three slips 52 are evenly distributed in outer barrel 40 in the radial direction, and the slips 52 is another
One end is connect with cone 53, and the slip groove coordinated with slips 52 is provided in cone 53, when tubing plug blocking is setting,
Slips 53 moves on slip groove so that slips 53 can act power to tube inner wall.In practical application, on slips 52
It is additionally provided with garter spring 521, it is fixed which can play the role of slips 52 limit.
In embodiments of the present invention, seal assembly may include：At least one sealing drum and voussoir and elastic claw, should
At least one sealing drum can be packing element.When sealing element includes a packing element, it is provided in the packing element one end and is sequentially sleeved on
Elastic claw on outer barrel and voussoir are provided with the voussoir and elastic claw being sequentially sleeved on outer barrel in the packing element other end.Work as sealing
When part includes multiple packing elements, spacer ring is provided between each two packing element.Preferably, as Figure 1-1, seal assembly 54 includes：
Two packing elements 541, then be provided with spacer ring 544 between two packing elements 541, and one end of one of packing element 541 is provided with sequentially
The elastic claw 542 and voussoir 543 being sleeved on outer barrel 40, one end of another packing element 541, which is provided with, to be sequentially sleeved on outer barrel 40
Voussoir 543 and elastic claw 542.When tubing plug is setting, two packing elements 541 are axially compressed, are radially expanded, at this point,
So that the seal assembly 54 can be with the space between sealed outer cylinder 40 and oil pipe.
Optionally, as shown in Figs. 1-2, locking device 62 may include：The pawl being arranged on 40 predeterminated position of outer barrel
Fixed ring 622, lock ring 623 and the shelves ring 624 being arranged between 621 and sheath 61 and outer barrel 40, wherein fixed ring 622, lock
Ring 623 and shelves ring 624 are sequentially socketed on outer barrel 40, solid with the cooperation of pawl 621 when lock ring 624 is set for tubing plug
Fixed, fixed ring 623 unseals shear pin 023 by third with sheath 61 and connect.In order to it is clearer indicate locking device 62 structure,
Offer tubing plug of the embodiment of the present invention is located at the partial enlarged view at D and at E, please refers to Fig.1-6 and Fig. 1-7, Fig. 1-6 is
Partial enlarged view of the tubing plug provided in an embodiment of the present invention at D, Fig. 1-7 are that oil pipe provided in an embodiment of the present invention is stifled
Specific reference numeral can not be done superfluous herein with reference chart 1-2 in partial enlarged view of the plug device at E, the Fig. 1-6 and Fig. 1-7
It states.
In embodiments of the present invention, for the position relationship of all parts in clearer expression tubing plug, this hair
Bright embodiment provides the stereogram of tubing plug, and as shown in Fig. 2-1 and Fig. 2-2, Fig. 2-1 is provided in an embodiment of the present invention one
The stereogram of kind tubing plug, Fig. 2-2 is a kind of stereogram of tubing plug lower end provided in an embodiment of the present invention, the figure
Specific reference numeral can be not repeated herein with reference chart 1-1 or Fig. 1-2 in 2-1 and Fig. 2-2.
It is as follows that the embodiment of the present invention provides tubing plug operation principle：
When setting, the one end pressing plate 511a is clamped with the step structure in outer barrel 40, and the other end of pressing plate 511a is to oil pipe
Box cupling gap generates resistance, so that pressing plate 511a is stuck in the box cupling gap of oil pipe, at this point, tubing plug is fixed on oil pipe；
When lifting top connection 10, the first shear pin 011 of giving up is cut, and middle core bar 20 moves upwards, when sealing structure 7311 is to first
When the sealing function of inlet opening 721 disappears, first annular seal space body 731a enters liquid, the first sealing by the first inlet opening 721
Cavity 731a generates sealing ring 731 hydrostatic under the action of liquid so that first annular seal space body 731a and the second seal chamber
Body 731b forms pressure difference, and the second shear pin 012 of giving up is made to be cut under the action of the pressure difference, and piston bush 72 moves upwards,
And sheath 61 is driven to be moved upwards with shelves ring 624, while sheath 61 moves upwards, two packing elements 541 are axially compressed, edge
It is radially expanded, and slips 52 moves in the direction of slip groove so that two packing elements 541 can be between sealed outer cylinder 40 and oil pipe
Space, while slips 53 can act power to tube inner wall；When lock ring 623 moves to 621 position of pawl, and
When coordinating fixed with pawl 621, the setting completion of tubing plug.
When deblocking, fishing head 30 is lifted, the first deblocking shear pin 021 and third deblocking shear pin 023 are cut, and outer barrel 40 moves
It is dynamic, so that pressing plate 511a is released with the step structure in outer barrel 40 and is clamped, pressing plate 511a disappears to the resistance in the box cupling gap of oil pipe,
And lock ring 623 and the active force of pawl 621 disappear；Top connection 10 is lifted again, so that the second deblocking shear pin 022 is cut, is worked as sealing
When structure 7311 disappears to the sealing function of the second inlet opening 722, the second inlet opening 722 is connected to third inlet opening 21, and second
Seal cavity 731b enters liquid, and first annular seal space body 731a and the second seal cavity 731b pressure differences disappear, and piston bush 72 is right
The active force of sheath 61 disappears, and then two sealing drums 541 is made radially to be compressed, and stretches in an axial direction, and slips 52 is in slips
The direction of slot moves so that the space of two packing elements 541 no longer between sealed outer cylinder 40 and oil pipe, while slips 53 is no longer right
Tube inner wall acts power, completes deblocking, at this point it is possible to which the oil pipe salvaging device is salvaged to come from oil pipe.
In conclusion tubing plug provided in an embodiment of the present invention, by the way that the first inlet opening and are arranged on piston
Two inlet openings, when liquid enters first annular seal space body from the first inlet opening, first annular seal space body is formed with the second seal cavity
Pressure difference, tubing plug complete it is setting, when liquid from the second inlet opening enter the second seal cavity when, first annular seal space body with
The pressure difference that second seal cavity is formed disappears, and tubing plug completes deblocking, in the case where not needing preset seating nipple,
It can realize the setting of tubing plug and deblocking, and when unsealing completion, which can be beaten from oil pipe
It pulls out and, effectively increase the use scope of the tubing plug, improve the applicability of tubing plug.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of tubing plug, which is characterized in that including：
Top connection, middle core bar, fishing head, outer barrel, packer, sheath, locking device, home record head, piston, piston bush and under connect
Head；
One end of the middle core bar is connect with the top connection, the fishing head, the outer barrel, the piston and the lower contact
It is sequentially connected with, the outer sleeve is sequentially socketed with the packer and the sheath, institute on the middle core bar on the outer barrel
Locking device is stated to be arranged in the cavity that the outer barrel and the sheath are formed, the home record head be located at the piston and it is described in
In the cavity that core bar is formed；
Packer includes：Pressing plate when the pressing plate is clamped with the outer barrel, generates resistance to the box cupling gap of oil pipe, makes described
Pressure board is in the box cupling gap of the oil pipe；
Sealing ring is provided in the piston bush, the sealing ring forms the lower contact, the piston and the piston bush
Cavity be divided into first annular seal space body and the second seal cavity, be provided on the piston positioned in first annular seal space body
First inlet opening is provided with the second inlet opening on the piston being located in the second seal cavity, is set on the center-pole
It is equipped with third inlet opening；
It is both provided with sealing structure in first inlet opening, second inlet opening and third inlet opening both sides；
The fishing head and the middle core bar are connect by the first shear pin of giving up, and the piston bush passes through second with the lower contact
Shear pin of giving up connects, and the packer is connect with the outer barrel by the first deblocking shear pin, the home record head and the middle core bar
By the second deblocking shear pin connection, the locking device unseals shear pin by third with the sheath and connect；
Wherein, when lifting the top connection, the described first shear pin of giving up is cut, and the first annular seal space body passes through described
One inlet opening enters liquid, so that the described second shear pin of giving up is cut under pressure, the piston bush is to the sheath, institute
It states locking device and the packer acts power, the space between the packer sealing outer barrel and oil pipe can be made,
When the locking device locking, complete setting；
When lifting the fishing head, the first deblocking shear pin and third deblocking shear pin are cut, the outer barrel movement,
Locking device unlock makes the pressing plate be released with the outer barrel and is clamped, and the pressing plate is to the box cupling gap of the oil pipe
After resistance disappears, when lifting the top connection, the second deblocking shear pin is cut, second inlet opening and the third
Inlet opening is connected to, and second seal cavity enters liquid, and the packer releases the sealing in the space between outer barrel and oil pipe,
Complete deblocking.
2. tubing plug according to claim 1, which is characterized in that
The locking device includes：The pawl and the sheath that are arranged on the outer barrel predeterminated position and the outer barrel it
Between the fixed ring, lock ring and the shelves ring that are arranged, the fixed ring, the lock ring and the shelves ring be sequentially socketed on the outer barrel,
It is fixed with the pawl cooperation when lock ring is set for the tubing plug, the fixed ring passes through institute with the sheath
State third deblocking shear pin connection.
3. tubing plug according to claim 1, which is characterized in that
The packer includes：Slip spider, slips, cone and seal assembly, the slip spider, the slips, the cone and
The seal assembly is sequentially socketed on the outer barrel,
The slip spider unseals shear pin by described first with the outer barrel and connect；
One end of the slips is connect with the slip spider, and the other end of the slips is connect with the cone；
The slip spider is provided with n pressing plate groove, is provided with the pressing plate in each pressing plate groove and coordinates with the pressing plate
Pin, the pressing plate can rotate on the pin；
The n is positive integer, and 2≤n≤4.
4. tubing plug according to claim 3, which is characterized in that
The seal assembly includes：Multiple sealing drums,
Spacer ring is provided between sealing drum described in each two.
5. tubing plug according to claim 3, which is characterized in that
The seal assembly includes：One sealing drum.
6. tubing plug according to claim 4 or 5, which is characterized in that
The seal assembly further includes：Voussoir and elastic claw, the voussoir are sleeved on the elastic claw on the outer barrel.
7. tubing plug according to claim 4, which is characterized in that
The multiple sealing drum is two sealing drums.
8. according to the tubing plug described in claim 4,5 or 7, which is characterized in that
The sealing drum is packing element.
9. tubing plug according to claim 3, which is characterized in that be provided with m slips hole, institute on the slip spider
Stating packer includes：One end of m slips, each slips is connect by slips hole with slip spider, and the m is greater than or equal to
2。
10. tubing plug according to claim 9, which is characterized in that the m is equal to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710194060.5A CN108661592B (en) | 2017-03-28 | 2017-03-28 | Oil pipe plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710194060.5A CN108661592B (en) | 2017-03-28 | 2017-03-28 | Oil pipe plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108661592A true CN108661592A (en) | 2018-10-16 |
| CN108661592B CN108661592B (en) | 2020-07-10 |
Family
ID=63785775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710194060.5A Active CN108661592B (en) | 2017-03-28 | 2017-03-28 | Oil pipe plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108661592B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126454A (en) * | 2021-03-24 | 2022-09-30 | 中国石油天然气股份有限公司 | Oil pipe plug |
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| CN115126454A (en) * | 2021-03-24 | 2022-09-30 | 中国石油天然气股份有限公司 | Oil pipe plug |
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| CN108661592B (en) | 2020-07-10 |
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