CN208089259U - A kind of packer - Google Patents
A kind of packer Download PDFInfo
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- CN208089259U CN208089259U CN201820353610.3U CN201820353610U CN208089259U CN 208089259 U CN208089259 U CN 208089259U CN 201820353610 U CN201820353610 U CN 201820353610U CN 208089259 U CN208089259 U CN 208089259U
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- central tube
- balance pipe
- wall
- packing element
- locking
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Abstract
A kind of packer, including：Sealing, deblocking portion and sticking department；The sealing includes central tube and packing element, packing element is set in the outer wall of central tube, and the enclosed area that the outer wall of packing element inner wall and central tube is formed is connected with the inner wall of central tube, so that along the axis direction Expansion sealing oil jacket annular space perpendicular to central tube in the state that packing element hydraulic pressure in oil pipe is more than first threshold；Deblocking portion includes balance pipe, and the lower end of balance pipe is set in the inside of the upper end of central tube；Sticking department includes locking set and locking piece, and locking is set in the outside of the upper end of central tube；In the state that hydraulic pressure is more than second threshold in oil pipe, locking set moving axially downwards along central tube so that the outside of the inner wall disengaged from locking member of locking set, locking piece are in movable state, and makes balance pipe with the degree of freedom of the axial movement along central tube.
Description
Technical field
This application involves oil gas field downhole tool technical field, more particularly to a kind of packer.
Background technology
Packer is a kind of equipment being widely used in the fields such as well cementation, underground work, and each interval of oil well is made to be mutually separated, with
Just it constructs to each interval.
Currently, it is K341 formulas packer and the packing of K344 formulas to lead inflatable packer type to be used in the construction process
Device accesses multiple packers on tubing string in operation, Seal Oil covers annular space after each packer setting, and stratum is divided into several sections
And set, realize layering measure.Higher and higher, both expandings envelope with the quantity and packing series of single tubing string packer
Every device, all there is deblocking power to be successively superimposed, the bigger defect of the more deblocking power of series, the tubing string even nothing when deblocking power is excessive
Method unseals, and packer cannot meet the needs of normal construction, the application of packer is made to be restricted, and can not play its effect.
Invention content
In view of the above-mentioned problems, the embodiment of the present application discloses a kind of packer, including：Sealing, deblocking portion and sticking department；
The sealing includes central tube and packing element, and the packing element is set in the outer wall of the central tube, and the packing element
The enclosed area that is formed of outer wall of inner wall and the central tube be connected with the inner wall of the central tube so that the packing element is in
Hydraulic pressure is more than in the state of first threshold along the axis direction Expansion sealing oil jacket perpendicular to the central tube in heart pipe inner oil tube
Annular space；
The deblocking portion includes balance pipe, and the lower end of the balance pipe is set in the inner wall of the upper end of the central tube；
The sticking department includes locking set and locking piece, the outer wall for locking the upper end for being set in the central tube；
The locking piece runs through the tube wall of the central tube, and the tube wall of the balance pipe is extended on the inside of the locking piece
In, the outside of the locking piece and the inner wall of the locking set fit, so that the locking piece is in stationary state, and make institute
It states central tube and the balance pipe is relatively fixed；
In the state that hydraulic pressure is more than second threshold in oil pipe, axially downwardly shifting of the locking set along the central tube
Dynamic, so that the inner wall of the locking set is detached from the outside of the locking piece, the locking piece is in movable state so that described
Balance pipe has the degree of freedom of the axial movement along the central tube.
In one schematical embodiment of the application, the lower end of the balance pipe is provided with the slot for being connected to its inner cavity
The upper end in portion, the central tube is provided through the pressure transmission hole of its tube wall；
In the state that the central tube and the balance pipe are relatively fixed, the slot portion is connected to the pressure transmission hole,
So that the inner cavity of the balance pipe is connected to the inner wall of the locking set, hydraulic pressure in the oil pipe in the balance pipe is reached described
Lock the inner wall of set.
In one schematical embodiment of the application, the sticking department further includes：Safety is cut off；
The jacket wall of the locking set is provided with safety scissors pin hole, and safety scissors cotter way is provided on the outside of the central tube；
The safety is cut off through the safety scissors pin hole, and described one end cut off safely extends to the safety scissors cotter way
In, so that the central tube and the locking is covered and is relatively fixed；
In the state that hydraulic pressure is more than second threshold in oil pipe, the locking set is cut the safety and is cut off, the locking
Cover moving axially downwards along the central tube.
In one schematical embodiment of the application, the tube wall of the central tube is provided with locking piece through-hole, described
It is provided with locking piece annular groove on the outside of balance pipe；
The locking piece runs through the locking piece through-hole, and one end of the locking piece extends to the locking piece annular groove
In.
In one schematical embodiment of the application, the deblocking portion further includes：Connector sleeve and deblocking are cut off；
The connector sleeve is set in the outside of the balance pipe, and the inside of the lower end of the connector sleeve and the central tube
Pass through screwed connection；
The jacket wall of the connector sleeve is provided with deblocking and cuts off hole, and being provided with deblocking on the outside of the balance pipe cuts off slot；
It is described deblocking cut off through it is described deblocking cut off hole and extend to it is described deblocking cuts off slot so that the connector sleeve with
The balance pipe is relatively fixed；
In the state that external force is more than third threshold value, the balance pipe is cut the deblocking and is cut off, and the balance pipe is along institute
Moving axially upwards for central tube is stated, and the inner cavity phase of the locking piece through-hole and the central tube is moved in the balance pipe
When connection, in the oil pipe in the inner cavity of the central tube hydraulic pressure via the locking piece through-hole and the safety scissors pin hole pressure release,
Oil jacket pressure balance is realized, so that the packing element is along the axis direction retracted for clearance perpendicular to the central tube.
In one schematical embodiment of the application, the deblocking portion further includes：Hanging sleeve and torque pin；
The hanging sleeve is set between the connector sleeve and the balance pipe, and the outside of the hanging sleeve and the connector sleeve
Upper end on the inside of pass through screwed connection；
The jacket wall of the hanging sleeve is provided with torque pin hole, and the tube wall of the balance pipe is provided with torque cotter way；
The torque pin is through the torque pin hole and extending in the torque cotter way, so that the hanging sleeve and described flat
Weighing apparatus pipe is relatively fixed in the circumferential；
In the balance pipe along the central tube in the state of moving axially upwards, the torque pin is in the torque pin
It is moved relative to the torque cotter way in the range of slot.
In one schematical embodiment of the application, the outer wall of the balance pipe is formed with protrusion, the balance pipe
The protrusion along the central tube engages with the hanging sleeve, and after pressure release, the packing element edge
Perpendicular to the axis direction retracted for clearance of the central tube, deblocking is completed, the balance pipe continues up, and described in drive
Sealing, which moves upwards, makes the packer be detached from the oil pipe.
In one schematical embodiment of the application, the packer further includes：Top connection and lower contact；
The top connection and the upper end of the balance pipe pass through screwed connection；
The lower contact and the lower end of the central tube pass through screwed connection.
In one schematical embodiment of the application, the sealing further includes：Packing element upper pressing cap and packing element push
Cap；
The packing element upper pressing cap is set in the outside of the upper end of the packing element, and the packing element is fixed in the upper end of the packing element
Between upper pressing cap and the central tube；
The packing element lower pressing cap is set in the outside of the lower end of the packing element, and the packing element is fixed in the lower end of the packing element
Between lower pressing cap and the central tube.
In one schematical embodiment of the application, the tube wall of the central tube is provided with osmosizing portion, the packing element
It is connected by the osmosizing portion with the inner cavity of the central tube.
This application provides a kind of packer, locking piece is installed between the balance pipe and the central tube, when described
It when locking piece is in stationary state, is relatively fixed between the balance pipe and the central tube, when hydraulic pressure is more than second in oil pipe
When threshold value, the locking piece makes the balance pipe that there is the axial direction along the central tube to move along the axial movement of the central tube
Dynamic degree of freedom only needs above to carry balance pipe after construction finishes, and the solution can be cut when external force is more than third threshold value
Envelope is cut off, and the packer carries out pressure release, is continued above to carry balance pipe that deblocking can be completed after pressure release, is overcome the prior art
In packer unseal when in use power it is excessive and lead to not deblocking technological deficiency.
Description of the drawings
Fig. 1 is a kind of sectional view for packer that one embodiment of the application provides；
Fig. 2 is the sectional view of the packing element for the packer that one embodiment of the application provides；
Fig. 3 is the sectional view of the balance pipe for the packer that one embodiment of the application provides；
Fig. 4 is the sectional view of the central tube for the packer that one embodiment of the application provides；
Fig. 5 is the sectional view of the locking set for the packer that one embodiment of the application provides；
Fig. 6 is the sectional view of the connector sleeve for the packer that one embodiment of the application provides；
Fig. 7 is the sectional view of the hanging sleeve for the packer that one embodiment of the application provides；
Fig. 8 a are the schematic diagram for the packer that one embodiment of the application provides；
Fig. 8 b are the schematic diagram for the packer that one embodiment of the application provides；
Fig. 8 c are the schematic diagram for the packer that one embodiment of the application provides.
Reference numeral
1 --- top connection, 2 --- balance pipe；
3 --- hanging sleeve, 4 --- torque pin；
5 --- connector sleeve, 6 --- deblocking is cut off；
7 --- safety is cut off, and 8 --- locking piece；
9 --- sealing ring, 10 --- locking set；
11 --- packing element upper pressing cap, 12 --- packing element；
13 --- central tube, 14 --- packing element lower pressing cap；
15 --- lower contact, 121 --- metal tube head；
122 --- casing play, 123 --- glue-line；
21 --- slot portion, 22 --- torque cotter way；
23 --- locking piece annular groove, 24 --- deblocking cuts off slot；
31 --- torque pin hole, 51 --- deblocking cuts off hole；
131 --- pressure transmission hole, 132 --- locking piece through-hole；
133 --- safety scissors cotter way, 134 --- osmosizing portion；
101 --- safety scissors pin hole.
Specific implementation mode
The specific implementation mode of the application is described below in conjunction with the accompanying drawings.
Herein, "upper", "lower", "front", "rear", "left", "right" etc. are only used for indicating the position between opposite segments
Relationship, and the absolute position of these non-limiting relevant portions.
To solve the above problems, referring to Fig. 1, the embodiment of the present application provides a kind of packer, including：Sealing, deblocking
Portion and sticking department；
The sealing includes central tube 13 and packing element 12, and the packing element 12 is set in the outer wall of the central tube 13, and
The enclosed area that the outer wall of the inner wall of the packing element 12 and the central tube 13 is formed is connected with the inner wall of the central tube 13, with
Along swollen perpendicular to the axis direction of the central tube 13 in the state of making the hydraulic pressure in oil pipe of the packing element 12 be more than first threshold
Swollen Seal Oil covers annular space；
The deblocking portion includes balance pipe 2, and the lower end of the balance pipe 2 is set in the interior of the upper end of the central tube 13
Wall；
The sticking department includes locking set 10 and locking piece 8, and the locking set 10 is set in the upper end of the central tube 13
Outer wall；
The locking piece 8 runs through the tube wall of the central tube 13, and the inside of the locking piece 8 extends to the balance pipe 2
Tube wall in, the outside of the locking piece 8 and it is described locking set 10 inner wall fit so that the locking piece 8 be in fix
State, and the central tube 13 and the balance pipe 2 is made to be relatively fixed；
In the state that hydraulic pressure is more than second threshold in oil pipe, the locking covers 10 along the central tube 13 axially downwardly
Mobile, so that the inner wall of the locking set 10 is detached from the outside of the locking piece 8, the locking piece 8 is in movable state, makes
Obtain the degree of freedom for the axial movement that the balance pipe 2 has along the central tube 13.
Fig. 2 is the structural schematic diagram of the packing element 12 of packer provided by the embodiments of the present application, as shown, the packing element 12
Including：Metal tube head 121, casing play 122 and glue-line 123；
The casing play 122 is set in the glue-line 123, the both ends of the glue-line 123 respectively with the metal tube head
121 pass through screwed connection.
The material of the glue-line 123 can select the telescopic material such as rubber, the material of the casing play 122 that can select
The materials such as finer wire or nylon cord are selected, the material of the metal tube head 121 can select 35CrMo.
The packing element 12 is hollow tubular, and the internal diameter of the packing element 12 is adapted with the outer diameter of the central tube 13.
The outer diameter of the lower end of the balance pipe 2 is adapted with the internal diameter of the upper end of the central tube 13.
The internal diameter of the locking set 10 is adapted with the outer diameter of the balance pipe 2.
In the embodiment of the present application, the locking piece 8 can select ball lock.The locking piece 8 is in fixing shape
When state, the outside of the locking piece 8 and the internal diameter of the locking set 10 fit, and ensure that the locking piece 8 will not be in the lock
Determine to move in part through-hole 132.
The range of the first threshold can select 2MPa to 3MPa, the second threshold that can select 30MPa or so.
Optionally, the tube wall of the central tube 13 is provided with osmosizing portion 134, and the packing element 12 is interior with the central tube 13
Chamber is connected by the osmosizing portion 134.The osmosizing portion 134 can be the cutting seam on the tube wall of the central tube 13, institute
Fabrication hole can be arranged by stating on the tube wall of central tube 13, processed cutting seam on the central tube 13 by the fabrication hole, added
The fabrication hole is sealed after work.
The locking piece 8 is fixed on the central tube 13 by packer provided by the embodiments of the present application using locking set 10
So that the central tube 13 is relatively fixed with the balance pipe 2 between the balance pipe 2, when the oily intraluminal fluid of packer inner cavity
When pressure is more than second threshold, the locking piece 8 is in movable state, and by above carrying balance pipe 2, completion pressure release is easy to operate,
Can realize safe deblocking, overcome packer in the prior art unseal when in use power it is excessive and lead to not deblocking skill
Art defect.
Fig. 3, Fig. 4 and Fig. 5 are respectively the balance pipe 2, central tube 13 and locking set of packer provided by the embodiments of the present application
10 structural schematic diagram, according to Fig. 1, Fig. 3, Fig. 4 and Fig. 5, in the embodiment of the present application, the lower end of the balance pipe 2 is provided with
It is connected to the slot portion 21 of its inner cavity, the upper end of the central tube 13 is provided through the pressure transmission hole 131 of its tube wall；
In the state that the central tube 13 and the balance pipe 2 are relatively fixed, the slot portion 21 and the pressure transmission hole
131 connections, so that the inner cavity of the balance pipe 2 is connected to the inner wall of the locking set 10, it will be in the oil pipe in the balance pipe 2
Hydraulic pressure reaches the inner wall of the locking set 10.
The outer diameter of the lower end of the balance pipe 2 is adapted with the internal diameter of the upper end of the central tube 13.
The length in the slot portion 21 can be selected according to actual needs, not limited herein.
The central tube 13 is hollow tubular structure, and the internal diameter of the upper end is relatively large and carries sealing surface, outer diameter setting
There are stepped two seals, the tube wall of the upper end of the central tube 13 to be provided with pressure transmission hole 131, the size of the pressure transmission hole 131
It is processed according to actual needs, when ensureing that hydraulic pressure is more than the state of second threshold in oil pipe, hydraulic pressure passes through in the oil pipe
The pressure transmission hole 131 reaches the inner wall of the locking set 10, so that the locking is covered 10 edges under the action of hydraulic pressure in the oil pipe
Central tube 13 moves axially downwards, and locking piece 8 is made to be in movable state.The top and bottom of the central tube 13 can lead to
Cross threaded connection.
The balance pipe 2 is hollow tubular structure, and the size in the slot portion 21 is adapted with the pressure transmission hole 131, is protected
Hydraulic pressure can make the inner cavity of the balance pipe 2 and the locking by the slot portion 21 and the pressure transmission hole 131 in card oil pipe
Set 10 is connected.The outer diameter of the lower end of the balance pipe 2 is adapted to the internal diameter of the upper end of the central tube 13, the balance pipe 2
Lower end and the upper end of the central tube 13 fasten.
Two-stage step type sealing surface can be arranged in the locking set 10, and the upper end of the locking set 10 is major diameter section, described
The lower end of locking set 10 is path section, when the locking piece 8 is in stationary state, the locking piece through-hole 132 and the lock
Surely the path section of set 10 aligns, and fits on the inside of the outside of the locking piece 8 and the path section, when the locking piece 8
When in movable state, the locking piece through-hole 132 aligns with the major diameter section.The two-stage of the locking set 10 is stepped
Sealing surface is adapted with the stepped two seals of the central tube 13, and one group of sealing is arranged in the sealing surface of locking set lower end
Slot, the interior placement sealing ring 9 of the seal groove ensure that holding seals between the locking lower end covered and the central tube 13
State.When hydraulic pressure is more than the state of second threshold in oil pipe, hydraulic pressure is reached described by the pressure transmission hole 131 in the oil pipe
The inner wall of locking set 10 makes the locking set 10 along the axially downwardly shifting of central tube 13 in the oil pipe under the action of hydraulic pressure
Dynamic, the side of the locking piece 8 and the path section of the locking set 10 are separated, the locking piece 8 and the central tube 13
An activity space is formed between major diameter section, and locking piece 8 is made to be in movable state.
Packer provided by the embodiments of the present application, the locking set 10 pass through the pressure transmission hole 131 and the central tube 13
Inner cavity be connected, using it is described locking cover 10 stepped sealing surface be combined to form hydraulic piston with sealing ring 9, utilize work
The inside and outside pressure difference of plug makes the locking set 10 obtain longitudinal degree of freedom, to make locking piece 8 be transformed into and can be lived by stationary state
Dynamic state.
According to Fig. 1, Fig. 4 and Fig. 5, in the embodiment of the present application, the sticking department further includes：Safety cuts off 7；
The jacket wall of the locking set 10 is provided with safety scissors pin hole 101, and the outside of the central tube 13 is provided with safety scissors
Cotter way 133；
The safety cuts off 7 and runs through the safety scissors pin hole 101, and one end that the safety cuts off 7 extends to the safety
It cuts off in slot 133, so that the central tube 13 and the locking is covered 10 and be relatively fixed；
In the state that hydraulic pressure is more than second threshold in oil pipe, the locking set 10 cuts the safety and cuts off 7, the lock
Surely 10 moving axially downwards along the central tube 13 are covered.
The size that the safety scissors cotter way 133, the safety scissors pin hole 101 and the safety cut off 7 is adapted.Described
Multiple safety scissors pin holes 101 can be set on the jacket wall of locking set 10, multiple safety scissors pin holes 101 can when in use
To be all equipped with the safety and cut off 7, can also only being partly equipped with the safety cuts off 7, with taking human as control shearing force.
The upper end of the central tube 13 forms annular protrusion, and safety scissors cotter way 133, the locking are provided in the protrusion
Safety scissors pin hole 101, the outside of the inside and the upper end of the central tube 13 of the locking set 10 are provided on the jacket wall of set 10
Fitting makes the safety cut off 7 through the safety scissors pin hole 101 and extends in the safety scissors cotter way 133.
After pressurizeing to packer, hydraulic pressure makes the pressure of 10 inner cavities of the locking set be higher than by balance pipe 2 in the oil pipe
Pressure outside the locking set 10, inside and outside differential pressure make locking cover 10 moving axially downwards along central tube 13, central tube 13
Set fixation, locking set 10 drives the safety to cut off 7 moving axially downwards along the central tube 13 at this time, cut off safely 7 by
To shearing force, pressure difference is bigger, and shearing force is bigger, when hydraulic pressure is more than second threshold in oil pipe, cuts off 7 safely due to shearing force
Effect is cut.
Packer provided by the embodiments of the present application makes the locking cover 10 edges using packer intracavitary and external pressure difference
The axial downward movement of central tube 13, it is easy to operate to control the active state of the locking piece 8, improve packer knot
The flexibility of structure.
According to Fig. 1, Fig. 3 and Fig. 4, in the present embodiment, the tube wall of the central tube 13 is provided with locking piece through-hole 132,
2 outside of the balance pipe is provided with locking piece annular groove 23；
The locking piece 8 runs through the locking piece through-hole 132, and one end of the locking piece 8 extends to the locking piece
In annular groove 23.
The size of the locking piece 8, locking piece through-hole 132 and locking piece annular groove 23 is adapted, and the locking piece 8 is in solid
When determining state, one end of the locking piece 8 extends in the locking piece annular groove 23, the other end of the locking piece 8 with it is described
The inside jacket wall of locking set 10 fits, when the axis of the central tube 13 described in the promotion lower edge of hydraulic pressure in oil pipe of the locking set 10
To when moving down, the major diameter section of the locking set 10 is directed at the locking piece 8, and the locking piece 8 is covered with the locking at this time
10 inside jacket wall is separated, and the locking piece 8 can outward be moved along locking piece through-hole 132, is detached from 2 tube wall of balance pipe
Locking piece annular groove 23, locking piece 8 lose locking effect, and the balance pipe 2 is made to be separated with the central tube 13.
Packer provided by the embodiments of the present application is provided with the locking piece in the tube wall of the central tube 13 of the packer
The tube wall of through-hole 132, the central tube 13 is provided with locking piece annular groove 23, by the locking piece 8 by 13 He of the central tube
The balance pipe 2 is fixed, and the big of set 10 is locked along moving axially downwards to described for the central tube 13 in the locking set 10
Diameter section is moved to the position where the locking piece 8, and the locking piece 8 is enable to be moved in locking piece through-hole 132, construction knot
It only needs to carry central tube 13 after beam and deblocking can be realized, it is easy to operate, the size of deblocking power can be artificially controlled, realizes packing
The gradually deblocking of device.
According to Fig. 1, Fig. 3, Fig. 4 and Fig. 6, in the present embodiment, the deblocking portion further includes：Connector sleeve 5 and deblocking are cut off
6；
The connector sleeve 5 is set in the outside of the balance pipe 2, and the inside of the lower end of the connector sleeve 5 with it is described in
Heart pipe 13 passes through screwed connection；
The jacket wall of the connector sleeve 5 is provided with deblocking and cuts off hole 51, and 2 outside of the balance pipe is provided with deblocking and cuts off slot
24；
It is described deblocking cut off 6 through it is described deblocking cut off hole 51 and extend to it is described deblocking cut off in slot 24 so that described
Connector sleeve 5 is relatively fixed with the balance pipe 2；
In the state that external force is more than third threshold value, the balance pipe 2 cuts the deblocking and cuts off 6,2 edge of the balance pipe
The central tube 13 moves axially upwards, and is moved to the locking piece through-hole 132 and the central tube in the balance pipe 2
When 13 inner cavity is connected, hydraulic pressure is via the locking piece through-hole 132 and described in the oil pipe in the inner cavity of the central tube 13
101 pressure release of safety scissors pin hole, so that the packing element 12 is along the axis direction contraction perpendicular to the central tube 13.
The connector sleeve 5 is hollow tubular, and the connector sleeve 5 is connected through a screw thread with the central tube 13, ensures upper
When carrying balance pipe 2, the connector sleeve 5 will not move in the longitudinal direction.The middle part of the connector sleeve 5 is radially uniform to be distributed with solution
Envelope cuts off hole 51, and the deblocking cuts off 6, deblocking cuts off hole 51 and deblocking cuts off slot 24 and is adapted, the outer diameter of the connector sleeve 5 and
The internal diameter of the balance pipe 2 is adapted.
The upper end of the balance pipe 2 forms annular protrusion, the lower end card of the upper end of the annular protrusion and the connector sleeve 5
It closes, the connector sleeve 5 is made to be kept fixed in the longitudinal direction.
The deblocking cuts off 6 quantity, and can to cut off hole 51 with the deblocking consistent, can also be less than the deblocking and cut
The quantity of pin hole 51, the size of required external force to it is described deblocking cut off 6 material and quantity it is related, can according to actual needs into
Row selection, does not limit herein.
In the present embodiment, the deblocking portion further includes：Hanging sleeve 3 and torque pin 4；
The hanging sleeve 3 is set between the connector sleeve 5 and the balance pipe 2, and the outside of the hanging sleeve 3 and the company
Pass through screwed connection on the inside of the upper end of female connector 5；
The jacket wall of the hanging sleeve 3 is provided with torque pin hole 31, and the tube wall of the balance pipe 2 is provided with torque cotter way 22；
The torque pin 4 is through the torque pin hole 31 and extends in the torque cotter way 22, so that 3 He of the hanging sleeve
The balance pipe 2 is relatively fixed in the circumferential；
In the balance pipe 2 along the central tube 13 in the state of moving axially upwards, the torque pin 4 is in the torsion
It is moved relative to the torque cotter way 22 in the range of square cotter way 22.
The internal diameter of the hanging sleeve 3 is adapted with the outer diameter of the central tube 13, and 3 upper end of the hanging sleeve is provided with protrusion, institute
It states protrusion and the upper end of the connector sleeve 5 fastens, the hanging sleeve 3 can be connected through a screw thread with the connector sleeve 5, the torsion
The size of square pin 4,4 through-hole of torque pin and torque cotter way 22 is adapted.
The internal diameter of the lower end of the connector sleeve 5 is adapted to the outer diameter of the upper end of the central tube 13, the connector sleeve 5 and institute
Stating central tube 13 can be connected through a screw thread.
When above carrying the balance pipe 2, make the moving axially upwards along the central tube 13 of the balance pipe 2, the torque
4 position of pin is constant, the torque cotter way 22 relative to the torque pin 4 along the moved axially upward of the balance pipe 2, it is described flat
Weighing apparatus pipe 2 is separated with the central tube 13.
Make that relative motion does not occur in the circumferential between the balance pipe 2 and the hanging sleeve 3 by the torque pin 4, and
The structure for controlling the packer entirety is relatively fixed in the circumferential.When the packer may be hampered in use
Card, can the unfreezing by way of lifting from the top and puting down, can the also unfreezing in a manner of by rotation, at this time under the action of torque pin 4,
The packer will not relatively rotate, and maintain the stability of structure.
Packer provided by the embodiments of the present application, the balance pipe 2, hanging sleeve 3, connector sleeve 5 and central tube 13 are by corresponding
Threaded connection, can ensure to unlock between the central tube 13 and the balance pipe 2 and not give up, it is upper carry balance pipe 2 carry out
Ensureing that oily casing pressure balanced while tool are not given up when deblocking makes the packer be detached from the oil pipe.
Optionally, the outer wall of the balance pipe 2 is formed with protrusion, the balance pipe 2 along the central tube 13 it is axial to
On move to the protrusion and engage with the hanging sleeve 3, and after pressure release, the balance pipe 2 continues up, and drives
The sealing moves upwards.
When above carrying the packer and making, the protrusion of 2 outer wall of the balance pipe engages with the hanging sleeve 3, drives the envelope
It is integrally moved up every device, until the packer is removed oil well, realizes deblocking.
Referring to Fig. 1, the embodiment of the present application provides packer and further includes：Top connection 1 and lower contact 15；
The top connection 1 and the upper end of the balance pipe 2 pass through screwed connection；
The lower contact 15 and the lower end of the central tube 13 pass through screwed connection.
The balance pipe 2 and the top connection 1 can select to be threadedly coupled, and the central tube 13 and the lower contact 15 can
To select to be threadedly coupled.
In the present embodiment, the sealing further includes：Packing element upper pressing cap 11 and packing element lower pressing cap 14；
The packing element upper pressing cap 11 is set in the outside of the upper end of the packing element 12, and institute is fixed in the upper end of the packing element 12
It states between packing element upper pressing cap 11 and the central tube 13；
The packing element lower pressing cap 14 is set in the outside of the lower end of the packing element 12, and institute is fixed in the lower end of the packing element 12
It states between packing element lower pressing cap 14 and the central tube 13.
The internal diameter of the lower end of the packing element upper pressing cap 11 is adapted with the outer diameter of the packing element 12, the upper end of the packing element 12
Internal diameter be adapted with the outer diameter of the central tube 13, pass through sealing ring between the packing element upper pressing cap 11 and the central tube 13
9 realize sealing.
The internal diameter of the upper end of the packing element lower pressing cap 14 is adapted with the outer diameter of the packing element 12, the packing element lower pressing cap 14
Internal diameter be adapted with the outer diameter of the lower contact 15, pass through sealing ring between the packing element lower pressing cap 14 and the lower contact 15
9 realize sealing.
Packer provided by the embodiments of the present application is equipped with locking piece 8 between the balance pipe 2 and the central tube 13,
When the locking piece 8 is in stationary state, it is relatively fixed between the balance pipe 2 and the central tube 13, when oily intraluminal fluid
When pressure is more than second threshold, the locking piece 8 makes the balance pipe 2 have along described along the axial movement of the central tube 13
The degree of freedom of the axial movement of central tube 13 only needs above to carry balance pipe 2 after construction finishes, when external force is more than third threshold value
When can cut the deblocking and cut off 6, the packer carries out pressure release, continues above to carry balance pipe 2 can be completed after pressure release
Deblocking, overcome packer in the prior art unseal when in use power it is excessive and lead to not deblocking technological deficiency.
Fig. 8 a to Fig. 8 c are the schematic diagram of packer provided by the embodiments of the present application, in conjunction with Fig. 1 to Fig. 7, to the application reality
The packer for applying example offer illustrates.
As shown in Figure 8 a, the packer is in assembled state, and the locking piece 8 is in stationary state, the central tube
13 and the balance pipe 2 be relatively fixed.
As shown in Figure 8 b, the packer is in Construction State, the top connection 1 and lower contact 15 of the packer respectively at
Oil pipe connects, and is pressurizeed into the packer by the oil pipe of top connection 1, and hydraulic pressure is more than first threshold in the pipe inner oil tube
When, hydraulic pressure enters packing element 12 by the osmosizing portion 134 in the oil pipe, and packing element 12 is made to expand, and the packer realization is set.
Continue to inject hydraulic pressure in oil pipe into oil pipe, when hydraulic pressure is more than second threshold in the pipe inner oil tube, hydraulic pressure is logical in the oil pipe
Slot portion 21 and pressure transmission hole 131 are crossed, so that the locking set 10 is cut the end safety and cuts off 7, after the safety cuts off 7 cuttings, institute
State locking set 10 in oil pipe under the action of hydraulic pressure along the axial downward movement of the central tube 13, make the locking piece through-hole
The 132 major diameter sections that 10 are covered with the locking align and form an activity space, and the locking piece 8 is in movable state.
As shown in Figure 8 c, the packer is in pressure release state, by above carrying the balance pipe 2, the lock of the balance pipe 2
Determining part annular groove 23 pushes the locking piece 8 to the gap between the locking piece through-hole 132 and the major diameter section of the locking set 10
Mobile, to when external force is more than third threshold value, the deblocking cuts off 6 cuttings, and made balance pipe 2 is detached from the central tube 13,
Hydraulic pressure is flowed out via locking piece through-hole 132, safety scissors pin hole 101 in oil pipe, makes the packer chamber pressure and external pressure
Balance, the packing element 12 are shunk, and realize the deblocking of the packer.
Packer provided by the embodiments of the present application cuts off 6 by locking piece 8, deblocking and cuts off 7 safely, can artificially control
System deblocking power, avoids the case where causing normally to unseal since overpressure is excessive, improves the safe to use of packer
Property and validity, overcome the problems, such as in the prior art decapsulator deblocking during deblocking power increase step by step lead to not unseal.
The application preferred embodiment and embodiment are explained in detail above in conjunction with attached drawing, but the application
The above-described embodiment and examples are not limited to, within the knowledge of those skilled in the art, can also not taken off
It is made a variety of changes under the premise of conceiving from the application.
Claims (10)
1. a kind of packer, which is characterized in that including：Sealing, deblocking portion and sticking department；
The sealing includes central tube (13) and packing element (12), and the packing element (12) is set in the outer of the central tube (13)
Wall, and the inner wall phase of the enclosed area and the central tube (13) of the outer wall of the inner wall of the packing element (12) and central tube (13) formation
Connection, so that along perpendicular to the central tube (13) in the state that the packing element (12) hydraulic pressure in oil pipe is more than first threshold
Axis direction Expansion sealing oil jacket annular space；
The deblocking portion includes balance pipe (2), and the lower end of the balance pipe (2) is set in the interior of the upper end of the central tube (13)
Wall；
The sticking department includes locking set (10) and locking piece (8), and the locking set (10) is set in the central tube (13)
The outer wall of upper end；
The locking piece (8) runs through the tube wall of the central tube (13), and the balance pipe is extended on the inside of the locking piece (8)
(2) in tube wall, the outside of the locking piece (8) and the inner wall of the locking set (10) fit, so that the locking piece (8)
In stationary state, and the central tube (13) and the balance pipe (2) is made to be relatively fixed；
In the state that hydraulic pressure is more than second threshold in oil pipe, the locking covers (10) along the central tube (13) axially downwardly
Mobile, so that the inner wall of the locking set (10) is detached from the outside of the locking piece (8), the locking piece (8) is in movable
State so that the balance pipe (2) has the degree of freedom of the axial movement along the central tube (13).
2. packer according to claim 1, which is characterized in that the lower end of the balance pipe (2), which is provided with, to be connected in it
The upper end in the slot portion (21) of chamber, the central tube (13) is provided through the pressure transmission hole (131) of its tube wall；
In the state that the central tube (13) and the balance pipe (2) are relatively fixed, the slot portion (21) and the pressure transmission
Hole (131) is connected to, so that the inner cavity of the balance pipe (2) is connected to the inner wall of the locking set (10), by the balance pipe (2)
Hydraulic pressure reaches the inner wall of the locking set (10) in interior oil pipe.
3. packer according to claim 1, which is characterized in that the sticking department further includes：Safety is cut off (7)；
The jacket wall of the locking set (10) is provided with safety scissors pin hole (101), and safety is provided on the outside of the central tube (13)
Cut off slot (133)；
The safety cuts off (7) and runs through the safety scissors pin hole (101), and one end that the safety cuts off (7) extends to the peace
It cuts off in slot (133) entirely, so that the central tube (13) and the locking is covered (10) and be relatively fixed；
In the state that hydraulic pressure is more than second threshold in oil pipe, the locking set (10) is cut the safety and is cut off (7), the lock
Fixed set (10) moving axially downwards along the central tube (13).
4. packer according to claim 3, which is characterized in that it is logical that the tube wall of the central tube (13) is provided with locking piece
Hole (132), balance pipe (2) outside are provided with locking piece annular groove (23)；
The locking piece (8) runs through the locking piece through-hole (132), and one end of the locking piece (8) extends to the locking
In part annular groove (23).
5. packer according to claim 4, which is characterized in that the deblocking portion further includes：Connector sleeve (5) and deblocking are cut
It sells (6)；
The connector sleeve (5) is set in the outside of the balance pipe (2), and the inside of the lower end of the connector sleeve (5) with it is described
Central tube (13) passes through screwed connection；
The jacket wall of the connector sleeve (5) is provided with deblocking and cuts off hole (51), and being provided with deblocking on the outside of the balance pipe (2) cuts off slot
(24)；
It is described deblocking cut off (6) through it is described deblocking cut off hole (51) and extend to it is described deblocking cut off slot (24) so that described
Connector sleeve (5) is relatively fixed with the balance pipe (2)；
In the state that external force is more than third threshold value, the balance pipe (2) is cut the deblocking and is cut off (6), the balance pipe (2)
It is moved to the locking piece through-hole (132) and institute along moving axially upwards for the central tube (13), and in the balance pipe (2)
When stating the inner cavity of central tube (13) and being connected, hydraulic pressure is logical via the locking piece in the oil pipe in the inner cavity of the central tube (13)
Oil jacket pressure balance is realized in hole (132) and the safety scissors pin hole (101) pressure release, so that the packing element (12) is along perpendicular to institute
State the axis direction retracted for clearance of central tube (13).
6. packer according to claim 5, which is characterized in that the deblocking portion further includes：Hanging sleeve (3) and torque pin
(4)；
The hanging sleeve (3) is set between the connector sleeve (5) and the balance pipe (2), and the outside of the hanging sleeve (3) and institute
It states and passes through screwed connection on the inside of the upper end of connector sleeve (5)；
The jacket wall of the hanging sleeve (3) is provided with torque pin hole (31), and the tube wall of the balance pipe (2) is provided with torque cotter way
(22)；
The torque pin (4) is through the torque pin hole (31) and extends in the torque cotter way (22), so that the hanging sleeve
(3) it is relatively fixed in the circumferential with the balance pipe (2)；
In the balance pipe (2) along the central tube (13) in the state of moving axially upwards, the torque pin (4) is described
It is mobile relative to the torque cotter way (22) in the range of torque cotter way (22).
7. packer according to claim 6, which is characterized in that
The outer wall of the balance pipe (2) is formed with protrusion, and the balance pipe (2) is along the moved axially upward of the central tube (13)
Engage to the protrusion with the hanging sleeve (3), and after pressure release, the packing element (12) is along the axis perpendicular to the central tube
Line direction retracted for clearance completes deblocking, and the balance pipe (2) continues up, and drives the sealing to move upwards to make
The packer is detached from the oil pipe.
8. packer according to claim 1, which is characterized in that further include：Top connection (1) and lower contact (15)；
The top connection (1) and the upper end of the balance pipe (2) pass through screwed connection；
The lower contact (15) and the lower end of the central tube (13) pass through screwed connection.
9. packer according to claim 8, which is characterized in that the sealing further includes：Packing element upper pressing cap (11) and
Packing element lower pressing cap (14)；
The packing element upper pressing cap (11) is set in the outside of the upper end of the packing element (12), and the upper end of the packing element (12) is fixed on
Between the packing element upper pressing cap (11) and the central tube (13)；
The packing element lower pressing cap (14) is set in the outside of the lower end of the packing element (12), and the lower end of the packing element (12) is fixed on
Between the packing element lower pressing cap (14) and the central tube (13).
10. packer according to claim 1, which is characterized in that the tube wall of the central tube (13) is provided with osmosizing portion
(134), the packing element (12) is connected with the inner cavity of the central tube (13) by the osmosizing portion (134).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820353610.3U CN208089259U (en) | 2018-03-15 | 2018-03-15 | A kind of packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820353610.3U CN208089259U (en) | 2018-03-15 | 2018-03-15 | A kind of packer |
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| Publication Number | Publication Date |
|---|---|
| CN208089259U true CN208089259U (en) | 2018-11-13 |
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ID=64062879
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|---|---|---|---|
| CN201820353610.3U Active CN208089259U (en) | 2018-03-15 | 2018-03-15 | A kind of packer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412452A (en) * | 2018-03-15 | 2018-08-17 | 陕西航天德林科技集团有限公司 | A kind of packer and its application method |
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2018
- 2018-03-15 CN CN201820353610.3U patent/CN208089259U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412452A (en) * | 2018-03-15 | 2018-08-17 | 陕西航天德林科技集团有限公司 | A kind of packer and its application method |
| CN108412452B (en) * | 2018-03-15 | 2024-04-02 | 陕西航天德林科技集团有限公司 | Packer and application method thereof |
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