CN105804688B - Compression bidirectional bearing can not flushing packer - Google Patents
Compression bidirectional bearing can not flushing packer Download PDFInfo
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- CN105804688B CN105804688B CN201610138595.6A CN201610138595A CN105804688B CN 105804688 B CN105804688 B CN 105804688B CN 201610138595 A CN201610138595 A CN 201610138595A CN 105804688 B CN105804688 B CN 105804688B
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- 230000006835 compression Effects 0.000 title claims abstract description 47
- 238000007906 compression Methods 0.000 title claims abstract description 47
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 22
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 18
- 238000012856 packing Methods 0.000 claims abstract description 82
- 238000007789 sealing Methods 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 238000011161 development Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 238000012797 qualification Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
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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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to packer technology field, be a kind of compression bidirectional bearing can not flushing packer, including top connection, central tube, lower contact, fixed cylinder, slide cylinder and set piston；The lower inside of top connection and the upper inner of central tube are fixedly installed togather, and the upper inner of lower contact and the lower inside of central tube are fixedly installed togather；The lower outside of top connection and the upper inner of fixed cylinder are fixedly installed togather, the fixing barrel casing of corresponding top connection lower position is equipped in fixed cylinder loaded on having on the outside of central tube and between fixed cylinder and central tube ebb interval and crosses recirculation hole with cross that ebb interval communicates.The present invention set and to unseal process simple to operate, it is less prone to the phenomenon that builds the pressure, and the present invention can realize bidirectional bearing during packing, with good load performance, its sealing effect is good, not easy to leak, can effectively prevent crossflow, the qualification rate of separate production and injection is improved, and meets the technology requirement of hierarchical-development.
Description
Technical field
It is that a kind of compression bidirectional bearing can not flushing packer the present invention relates to packer technology field.
Background technology
As the problem of oil field development time increases, and interlayer contradiction is increasing, and high pressure zone pours in down a chimney to low pressure layer, is increasingly prominent
Go out, seriously affects oil field production capacity and demixing injection-production effect.Present oil field mostly uses demixing injection-production well packer, when top oil reservoir pressure
Power is more than sealed pressure, and top oil reservoir liquid will be leaked to bottom oil layer；When lower part formation pressure is more than sealed pressure, under
Portion's oil reservoir liquid will be leaked to top oil reservoir；Crossflow is consequently formed, influences the effect of demixing injection-production.Currently, domestic each
The compression packer of oil field research and development cannot bear pressure difference, bearing capacity in use in the presence of that can only bear to push
The problem of not reaching requirement cannot achieve bidirectional bearing, sets and easily builds the pressure, and sealing and deblocking effect are poor.
Invention content
The present invention provides a kind of compression bidirectional bearing can not flushing packer, overcome the above-mentioned prior art no
Foot, can effectively solve to cannot achieve bidirectional bearing existing for existing packer, set and easily build the pressure, and sealing and deblocking effect are poor
The problem of.
The technical scheme is that realized by following measures：A kind of compression bidirectional bearing can not well-flushing packing
Device, including top connection, central tube, lower contact, fixed cylinder, sliding cylinder, packing element assembly, set shear pin, deblocking assembly, dummy piston
With set piston；The lower inside of top connection and the upper inner of central tube are fixedly installed togather, the upper inner of lower contact
It is fixedly installed togather with the lower inside of central tube；The lower outside of top connection and the upper inner of fixed cylinder are fixedly mounted on
Together, the fixing barrel casing of corresponding top connection lower position is loaded on having on the outside of central tube and between fixed cylinder and central tube between overcurrent
Gap is equipped in fixed cylinder and crosses recirculation hole with what ebb interval excessively communicated；The upper outside of fixed cylinder has outer land, slides the upper of cylinder
There is the upper pressure-bearing land for being set in fixed cylinder lower outside in end inside, between corresponding outer land and sliding cylinder outside the fixed cylinder of position
Side be set with can by compressional deformation realize packing element packing and can remove squeeze after restorable packing element assembly, slide cylinder
Lower part is set in the upper outside of lower contact and the two is installed together by setting shear pin；Between corresponding fixed cylinder and lower contact
It is equipped between sliding cylinder and the central tube of position can push and slides cylinder uplink and set piston, equipped with energy on the side wall of central tube
Make the through-hole that builds the pressure of its uplink to piston transmission hydraulic pressure is set, the corresponding sliding cylinder of position that builds the pressure between through-hole and lower contact is in
Between heart pipe be equipped with can by in go upward to dome-shaped state sliding cylinder formed self-locking limit central tube and it is upper carry central tube when
The deblocking assembly limited to it is released, corresponding set is formed between piston and deblocking assembly between the sliding cylinder and central tube of position
The chamber that builds the pressure communicated with the through-hole that builds the pressure；It is equipped on the inside of the sliding cylinder of position between corresponding deblocking assembly and lower contact and is located at central tube
The lower pressure-bearing land in outside has seepage flow gap in going upward between the sliding cylinder of dome-shaped state and lower contact, corresponding lower pressure-bearing land
Be equipped between sliding cylinder and the central tube of position between lower contact can in seepage flow gap uplink under the hydraulic action of fluid
Dummy piston.
Here is the further optimization and/or improvements to foregoing invention technical solution：
Above-mentioned deblocking assembly may include that fixed piston, lock ring gear cap, opening lock ring and deblocking shear pin, correspondence build the pressure under through-hole
Fixed piston and lock ring gear cap are from top to bottom set between the central tube that orientation is set and sliding cylinder successively, lock ring gear cap is in type
Shape is located on the outside of upper convex portion of the hatch lock ring set loaded on lock ring gear cap in sliding cylinder and seat is on the step surface of lock ring gear cap,
It is open and forms the deblocking ring cavity of opening upwards, the upper inner of fixed piston and the outside of central tube between lock ring and lock ring gear cap
It is fixedly installed togather, the lower part set of fixed piston is packed into deblocking ring cavity and is mounted on one with lock ring gear cap by unsealing shear pin
It rises；It is respectively equipped in the lock ring outside that goes upward on the inside of the sliding cylinder of dome-shaped state and be open and is mutually matched and self-locking can be mutually formed
Self-locking thread.
The above-mentioned upper outside for setting piston has and can carry out outer groove, has on the inside of the corresponding sliding cylinder for carrying out outer shroud groove location
Base part seat is in the screens land on implementation outer groove；The lower inside for setting piston builds the pressure inner groove, the corresponding inner groove that builds the pressure
Circumferentially there are at least two to build the pressure through-hole between groove top and fixed piston on the central tube of position；It is corresponding to carry out under outer groove
Between on the outside of what orientation was set set piston and on the inside of sliding cylinder, the corresponding inner groove top position that builds the pressure set on the inside of piston and in
Between on the outside of heart pipe, between corresponding fixed piston and the fixed piston inside and central tube outside of central tube junction lower position
And it is equipped with sealing ring between the outside and the inside for sliding cylinder of fixed piston.
Above-mentioned fixed cylinder may include adjusting sleeve and diversion pipe, have limited step on the outside of the middle part of central tube, in central tube
Outer sheath is equipped with the diversion pipe for being limited in position between top connection and limited step, is formed between overcurrent between diversion pipe and central tube
Gap, the outside of diversion pipe are from top to bottom set with adjusting sleeve, packing element assembly and sliding cylinder successively, the upper inner of adjusting sleeve with it is upper
The lower outside of connector, which is connected through a screw thread, to be fixedly installed togather, and is set between the lower inside of adjusting sleeve and the outside of diversion pipe
There is sealing ring, correspond to top connection and form water conservancy diversion ring cavity at this between sealing ring between the adjusting sleeve and diversion pipe of position, is adjusting
The whole series be equipped with communicate with water conservancy diversion ring cavity cross recirculation hole, water conservancy diversion ring cavity can be connected to by being equipped on diversion pipe leads with mistake ebb interval
Discharge orifice；The lower inside of top connection and the upper outside of central tube are connected through a screw thread and are fixedly installed togather, both corresponding spiral shell
Sealing ring is equipped between the inside of top connection and the outside of central tube of line junction lower position.
Above-mentioned sliding cylinder may include compression cylinder and push cylinder, and diversion pipe lower outside is set on the inside of the upper end of compression cylinder
Upper pressure-bearing land, between the inside and the outside of diversion pipe of upper pressure-bearing land be equipped with sealing ring；Push the upper inner of cylinder
It is connected through a screw thread and is fixedly installed togather with the lower outside of compression cylinder, the pushing of both corresponding threaded connection place lower position
It is equipped with sealing ring between on the outside of cylinder inside and compression cylinder；The lower part for pushing cylinder is set in the upper outside of lower contact and the two passes through
It sets shear pin to be installed together, the corresponding lower contact outside for pushing position contained by the stroke range of cylinder bottom end, which is equipped with to be located to set, cuts
The side of nailing on and the sealing ring that can be sealed with lower contact formation to pushing cylinder；Piston is set to be located between pushing cylinder and central tube, and
The lower seat of compression cylinder in carrying out on outer groove, set between the outside of piston and the inside for pushing cylinder and fixed piston it is outer
It is equipped with sealing ring between side and the inside for pushing cylinder；It can be with opening lock ring outside in having on the inside of the pushing cylinder for going upward to dome-shaped state
The self-locking thread to match is pushing the lower pressure-bearing land having on the inside of cylinder below self-locking thread.
The upper inner of above-mentioned lower contact and the lower outside of central tube, which can be connected through a screw thread, to be fixedly installed togather, right
It answers the two to be threadedly coupled on the inside of the lower contact of top position between central tube outside and is equipped with sealing ring, the upper end outside of lower contact
There are installation annular groove, installation annular groove lateral gap to be set with positioned at the dummy piston pushed on the inside of cylinder, corresponding lower contact top position
Dummy piston upper end on the inside of be equipped with and be set in compression land on the outside of central tube, the inside of compression land and the outside of central tube
Between and dummy piston on the outside of and push cylinder between be equipped with sealing ring；Corresponding lock ring gear cap in going upward to the flat of dome-shaped state
Place-centric pipe is equipped with exhaust hole between the top of weighing apparatus piston.
Above-mentioned packing element assembly may include side packing element, middle packing element and spacer ring, and position leads between corresponding adjusting sleeve and compression cylinder
From top to bottom be set with successively on the outside of flow tube while packing element, middle packing element and while packing element, every two adjacent side packing elements and middle packing element it
Between be equipped with the spacer ring being set on the outside of diversion pipe.
Structure of the invention is reasonable and compact, and it is simple to operate to set and unseal process, is less prone to the phenomenon that builds the pressure, and
The present invention can realize bidirectional bearing during packing, have good load performance, sealing effect is good, not easy to leak, energy
It is effective to prevent crossflow, the qualification rate of separate production and injection is improved, and meet the technology requirement of hierarchical-development, there is safety, save
Power, simplicity, efficient feature.
Description of the drawings
Attached drawing 1 is the main view half section schematic of the preferred embodiment first half.
Attached drawing 2 is the main view half section schematic of preferred embodiment lower half.
Attached drawing 3 is that the preferred embodiment first half is setting and bearing the main view half section knot under low pressure state
Structure schematic diagram.
Attached drawing 4 is that preferred embodiment lower half is setting and bearing the main view half section knot under low pressure state
Structure schematic diagram.
Coding in attached drawing is respectively：1 is top connection, is managed centered on 2, and 3 be lower contact, and 4 is set shear pin, and 5 be balance
Piston, 6 be recirculation hole, and 7 be upper pressure-bearing land, and 8 is set piston, and 9 be the through-hole that builds the pressure, and 10 be lower pressure-bearing land, and 11 be solid
Fixed piston, 12 be lock ring gear cap, and 13 be opening lock ring, and 14 be deblocking shear pin, and 15 be self-locking thread, and 16 be sealing ring, and 17 be tune
The whole series, 18 be diversion pipe, and 19 be water conservancy diversion ring cavity, and 20 be deflector hole, and 21 be compression cylinder, and 22 is push cylinder, and 23 be compression land, 24
It is side packing element for exhaust hole, 25,26 be middle packing element, and 27 be spacer ring.
Specific implementation mode
The present invention is not limited by following embodiments, can be determined according to the technique and scheme of the present invention with actual conditions specific
Embodiment.
In the present invention, for ease of description, the description of the relative position relation of each component is according to Figure of description 1
Butut mode be described, such as：The position relationship of front, rear, top, and bottom, left and right etc. is the Butut according to Figure of description
Direction determines.
With reference to embodiment and attached drawing, the invention will be further described：
As shown in attached drawing 1,2,3,4, the compression bidirectional bearing can not flushing packer include top connection 1, central tube 2,
Lower contact 3, sliding cylinder, packing element assembly, sets shear pin 4, deblocking assembly, dummy piston 5 and sets piston 8 fixed cylinder；Top connection
1 lower inside and the upper inner of central tube 2 are fixedly installed togather, the lower part of the upper inner and central tube 2 of lower contact 3
Inside is fixedly installed togather；The lower outside of top connection 1 and the upper inner of fixed cylinder are fixedly installed togather, and correspond to and connect
The fixing barrel casing of first 1 lower position loaded on 2 outside of central tube and had ebb interval between fixed cylinder and central tube 2, in fixed cylinder
It is equipped with and crosses recirculation hole 6 with what ebb interval excessively communicated；The upper outside of fixed cylinder has outer land, and sliding on the inside of the upper end of cylinder has set
Upper pressure-bearing land 7 loaded on fixed cylinder lower outside, the fixed cylinder outer sheath of position is equipped between corresponding outer land and sliding cylinder
Packing element packing can be realized by compressional deformation and can be set in restorable packing element assembly, the lower part for sliding cylinder after removing extruding
It is installed together in the upper outside and the two of lower contact 3 by setting shear pin 4；Position between corresponding fixed cylinder and lower contact 3
Sliding cylinder and central tube 2 between be equipped with can push and slide cylinder uplink and set piston 8, equipped with energy on the side wall of central tube 2
Make the through-hole 9 that builds the pressure of its uplink to setting piston 8 and transmitting hydraulic pressure, the sliding cylinder of the corresponding position between through-hole 9 and lower contact 3 of building the pressure
Be equipped between central tube 2 can by with form self-locking limit central tube 2 in the sliding cylinder for going upward to dome-shaped state and in upper carry
The deblocking assembly limited to it, the corresponding sliding cylinder and central tube for setting piston 8 and unsealing position between assembly are released when heart pipe 2
The chamber that builds the pressure communicated with the through-hole 9 that builds the pressure is formed between 2；It is set on the inside of the sliding cylinder of position between corresponding deblocking assembly and lower contact 3
There is the lower pressure-bearing land 10 positioned at the outside of central tube 2, between going upward between the sliding cylinder of dome-shaped state and lower contact 3 and having seepage flow
Gap is equipped with and can be flowed in seepage flow gap between the sliding cylinder and central tube 2 of position between corresponding lower pressure-bearing land 10 and lower contact 3
The dummy piston 5 of uplink under the hydraulic action of body.
When in use, first the present invention can be connected in pipe string, and the predeterminated position in well, is then pressurizeed into oil pipe
Water filling, high-pressure fluid will enter in central tube 2 at this time, and enter the intracavitary that builds the pressure by the through-hole 9 that builds the pressure, and thus act on and set work
It on plug 8, and transfers the force to by setting the compression of piston 8 and sets shear pin 4, and then cut and set shear pin 4, set work at this time
Plug 8 by drive slide cylinder uplink, to squeeze packing element assembly make its deformation and realize packing element insulate, at this time slide cylinder will go upward to
Push up simultaneously with deblocking always be shaped as self-locking, enable the invention to keep setting in release, at the same slide cylinder lower part and lower contact 3 it
Between will form seepage flow gap, the present invention, which will realize, insulates effect；During the packing of the present invention, corresponds to top connection 1 and set
Pressure pocket is enclosed between piston 8 between the fixed cylinder of position and central tube 2 and sliding cylinder, and crosses recirculation hole 6 and passes through
It crosses ebb interval to communicate with upper pressure pocket, when the pressure that packer top is born is more than low pressure, high-pressure fluid will be by overcurrent
Through-hole 6 enters in upper pressure pocket, to act on upper pressure-bearing land 7 and set on piston 8, enters the height in upper pressure pocket at this time
Pressure fluid will further enhance the sealing function of packing element assembly by applying upward active force to upper pressure-bearing land 7, to
Offset upper pressure, it is ensured that it keeps good sealing function；It is high when the pressure that packer lower part is born is more than upper pressure
Pressure fluid will be acted on dummy piston 5 by seepage flow gap, and lower pressure-bearing land 10 is against to push dummy piston 5 to go upward to
Bottom, thus can by downward pressure-bearing land 10 applies upward active force further enhance packing element assembly sealing make
With to offset low pressure, it is ensured that it keeps good sealing function；When having needed the present invention, upper lifting pipe can be passed through
To apply upward active force to central tube 2, forming the deblocking assembly of self-locking with sliding cylinder at this time will release to central tube 2 column
Limit, it is ensured that central tube 2 can smooth uplink, while central tube 2 will drive fixed cylinder Relative sliding cylinder uplink, gradually release pair
The squeezing action power of packing element assembly, packing element assembly will restore to the original state by the elasticity of itself, and the present invention is made to realize deblocking；The present invention's
It is simple to operate to set and unseal process, is less prone to the phenomenon that builds the pressure, and the present invention can realize two-way hold during packing
Pressure has good load performance, and sealing effect is good, not easy to leak, can effectively prevent crossflow, improves separate production and injection
Qualification rate, and meet hierarchical-development technology requirement.
Can according to actual needs, to above-mentioned compression bidirectional bearing can not flushing packer advanced optimize or/and change
Into：
As shown in attached drawing 1,2,3,4, deblocking assembly includes fixed piston 11, lock ring gear cap 12, opening lock ring 13 and deblocking
Shear pin 14 is from top to bottom set with fixed piston 11 successively between the central tube 2 and sliding cylinder of corresponding 9 lower position of through-hole that builds the pressure
With lock ring gear cap 12, lock ring gear cap 12 is in convex shape, and the opening lock ring 13 in sliding cylinder is set in the upper of lock ring gear cap 12
On the outside of protrusion and seat is in the solution for forming opening upwards between lock ring 13 and lock ring gear cap 12 that on the step surface of lock ring gear cap 12, is open
Seal ring chamber, the upper inner of fixed piston 11 and the outside of central tube 2 are fixedly installed togather, the lower part suit of fixed piston 11
Enter to unseal in ring cavity and is installed together with lock ring gear cap 12 by unsealing shear pin 14；In the sliding cylinder inside for going upward to dome-shaped state
The self-locking thread 15 that is mutually matched and can mutually form self-locking is respectively equipped with 13 outside of opening lock ring.During setting, it is in
Go upward to dome-shaped state sliding cylinder will in opening lock ring 13 by self-locking thread 15 formed self-locking, to limit lock ring gear cap 12,
Fixed piston 11 and central tube 2 enable the invention to keep setting in release；When it enters deblocking process, central tube 2 is above carried
Deblocking shear pin 14 can be cut, to make fixed piston 11 with 2 uplink of central tube, while make opening lock ring 13 and lock ring gear cap 12
It keeps in situ, limit of the deblocking assembly to central tube 2 can be released in this way；This deblocking assembly structure is ingenious, using opening lock ring 13
It can make to realize self-locking rapidly between opening lock ring 13 and sliding cylinder with self-locking thread 15, and can reuse, while make deblocking
Assembly, which is located under the through-hole 9 that builds the pressure, can effectively prevent building the pressure, it is ensured that deblocking is smoothed out.According to demand, in fixed piston 11
At least six deblocking shear pins 14 can be uniformly distributed with along the circumference between lock ring gear cap 12, it can be made to be more uniformly stressed in this way, be convenient for
It unseals shear pin 14 smoothly to cut, it is ensured that deblocking smoothly completes.
As shown in attached drawing 1,2,3,4, the upper outside for setting piston 8 has implementation outer groove, corresponding to carry out outer shroud groove location
Sliding cylinder on the inside of have base part seat in carrying out the screens land on outer groove；The lower inside for setting piston 8 builds the pressure inner groove,
Corresponding build the pressure between inner groove groove top and fixed piston 11 circumferentially has at least two to build the pressure through-hole on the central tube 2 of position
9；Corresponding implementation outer groove lower position is set on the outside of piston 8 between sliding cylinder inside, the corresponding inner groove upper position that builds the pressure
Set set between the inside of piston 8 and 2 outside of central tube, corresponding fixed piston 11 is consolidated with 2 junction lower position of central tube
It is equipped with sealing between 2 outside of 11 inside of fixed piston and central tube and between the outside and the inside for sliding cylinder of fixed piston 11
Circle 16.Thus corresponding set can be made to be formed and be built the pressure between the sliding cylinder of position between piston 8 and fixed piston 11 and central tube 2
What through-hole 9 communicated build the pressure chamber；The groove top that will act on the inner groove that builds the pressure after high-pressure fluid, which enters, builds the pressure chamber sets to push
Piston 8 drives sliding cylinder uplink.According to demand, at least six are uniformly distributed with along the circumference on central tube 2 to build the pressure through-hole 9, in this way may be used
It is set to be more uniformly stressed, the shear pin convenient for fast and stable sets shear pin 4 and squeezes packing element assembly.
As shown in attached drawing 1,2,3,4, fixed cylinder includes adjusting sleeve 17 and diversion pipe 18, is had on the outside of the middle part of central tube 2
Limited step is equipped with the diversion pipe 18 for being limited in position between top connection 1 and limited step, diversion pipe in 2 outer sheath of central tube
Ebb interval was formed between 18 and central tube 2, the outside of diversion pipe 18 is from top to bottom set with adjusting sleeve 17, packing element assembly successively
With sliding cylinder, the upper inner of adjusting sleeve 17 and the lower outside of top connection 1 are connected through a screw thread and are fixedly installed togather, and adjust
It is equipped with sealing ring 16 between the lower inside and the outside of diversion pipe 18 of set 17, corresponds to top connection 1 and at this between sealing ring 16
Water conservancy diversion ring cavity 19 is formed between the adjusting sleeve 17 and diversion pipe 18 of position, is equipped in adjusting sleeve 17 and to be communicated with water conservancy diversion ring cavity 19
Recirculation hole 6 is crossed, the deflector hole 20 that can be connected to water conservancy diversion ring cavity 19 with cross ebb interval is equipped on diversion pipe 18；The lower part of top connection 1
The upper outside of inside and central tube 2, which is connected through a screw thread, to be fixedly installed togather, both corresponding threaded connection place lower position
Top connection 1 inside and the outside of central tube 2 between be equipped with sealing ring 16.In use, adjusting sleeve 17 can be considered solid
The outer land of safety barrel, and realize the limit to packing element assembly upper end；Adjusting sleeve 17 and diversion pipe 18 can be used split type or integrated
Formula keeps its processing and installation more convenient laborsaving using split type.According to demand, can be uniformly distributed with along the circumference in adjusting sleeve 17 to
Few six are crossed recirculation hole 6, can be uniformly distributed at least six deflector holes 20 along the circumference on diversion pipe 18, can be convenient for high-pressure fluid in this way
It more can quickly and uniformly shunt, to disperse upper pressure.
As shown in attached drawing 1,2,3,4, sliding cylinder includes compression cylinder 21 and pushes cylinder 22, has set on the inside of the upper end of compression cylinder 21
Upper pressure-bearing land 7 loaded on 18 lower outside of diversion pipe is equipped between the inside and the outside of diversion pipe 18 of upper pressure-bearing land 7
Sealing ring 16；The lower outside of the upper inner and compression cylinder 21 that push cylinder 22, which is connected through a screw thread, to be fixedly installed togather, right
It answers and is equipped with sealing ring 16 between 22 inside of pushing cylinder of the two threaded connection place lower position and 21 outside of compression cylinder；Push cylinder 22
Lower part be set in the upper outside of lower contact 3 and the two is installed together by setting shear pin 4, it is corresponding to push 22 bottom row of cylinder
3 outside of lower contact of position contained by journey range is equipped with to be located at and sets 4 top of shear pin and can be formed with lower contact 3 to pushing cylinder 22
The sealing ring 16 of sealing；It sets piston 8 to be located between pushing cylinder 22 and central tube 2, and the lower seat of compression cylinder 21 is outer in carrying out
On annular groove, set piston 8 outside and push cylinder 22 inside between and fixed piston 11 outside with pushing cylinder 22 it is interior
Sealing ring 16 is equipped between side；Having in the inside of pushing cylinder 22 for going upward to dome-shaped state can match with 13 outside of opening lock ring
Self-locking thread 15 is pushing the lower pressure-bearing land 10 having on the inside of cylinder 22 below self-locking thread 15.It can make pushing cylinder 22 in this way
When going upward to top, the sealing ring 16 that 3 outside of lower contact is installed can be located at the lower section for pushing cylinder 22, so that it is guaranteed that in top is gone upward to
There is seepage flow gap between the sliding cylinder and lower contact 3 of state, enables the invention to smoothly bear to push；In use, it compresses
Cylinder 21 can be considered screens land, and the extruding to packing element assembly lower part is realized in uplink, keep packing element assembly real by squeezing
Existing packing element packing, makes the present invention smoothly set；Split type or integral type can be used in compression cylinder 21 and pushing cylinder 22, and use is split type
Its processing and installation can be made more convenient laborsaving.According to demand, push can be uniformly distributed with along the circumference between cylinder 22 and lower contact 3 to
Few six set shear pin 4.It can be made to be more uniformly stressed in this way, can smoothly be cut convenient for setting shear pin 4.
As shown in attached drawing 1,2,3,4, the upper inner of lower contact 3 is connected through a screw thread solid with the lower outside of central tube 2
Dingan County is fitted together, and sealing ring is equipped between both corresponding 3 inside of lower contact for being threadedly coupled top position and 2 outside of central tube
16, the upper end outside of lower contact 3 has installation annular groove, installation annular groove lateral gap to be set with positioned at the balance work for pushing 22 inside of cylinder
Plug 5,5 upper end of the dummy piston inside of 3 top position of corresponding lower contact are equipped with the compression land 23 for being set in 2 outside of central tube,
It is equipped with sealing between the inside and the outside of central tube 2 of compression land 23 and between 5 outside of dummy piston and pushing cylinder 22
Circle 16；It corresponds to lock ring gear cap 12 and is equipped with exhaust in place-centric pipe 2 between the top for the dummy piston 5 for going upward to dome-shaped state
Through-hole 24.In use, when the pressure that packer lower part is born is more than upper pressure, high-pressure fluid will be by between seepage flow
Gap enters in the installation annular groove between dummy piston 5 and lower contact 3, and acts on the bottom of compression land 23, flat to push
Weighing apparatus piston 5 goes upward to the bottom for being against lower pressure-bearing land 10, thus can apply upward active force by downward pressure-bearing land 10
And the sealing function of packing element assembly is further enhanced, to offset low pressure, it is ensured that the present invention can keep good sealing to make
With.
As shown in attached drawing 1,2,3,4, packing element assembly includes side packing element 25, middle packing element 26 and spacer ring 27, corresponding adjusting sleeve 17
Between compression cylinder 21 outside of diversion pipe 18 of position be from top to bottom set with successively while packing element 25, middle packing element 26 and while packing element
25, the spacer ring 27 for being set in 18 outside of diversion pipe is equipped between every two adjacent side packing elements 25 and middle packing element 26.In this way may be used
Packing element assembly is set to set performance with good, and simple in structure, it is easy for installation laborsaving.According to demand, when fixed cylinder or/and cunning
When shifting cylinder is all made of integral structure, the packing element assembly installation of this structure can be：Position between corresponding outer land and sliding cylinder
From top to bottom be set with successively on the outside of fixed cylinder while packing element 25, middle packing element 26 and while packing element 25；In addition, packing element assembly can also be used
Other existing known technologies.
The above technical characteristic constitutes highly preferred embodiment of the present invention, is imitated with stronger adaptability and best implementation
Fruit can increase and decrease non-essential technical characteristic, to meet the needs of different situations according to actual needs.
Claims (10)
1. a kind of compression bidirectional bearing can not flushing packer, it is characterised in that including top connection, central tube, lower contact, solid
Safety barrel, sliding cylinder, packing element assembly set shear pin, deblocking assembly, dummy piston and set piston；The lower inside of top connection with
The upper inner of central tube is fixedly installed togather, and the upper inner of lower contact and the lower inside of central tube are fixedly mounted on one
It rises；
The lower outside of top connection and the upper inner of fixed cylinder are fixedly installed togather, the fixation of corresponding top connection lower position
Jacket casing is loaded on central tube outside and has ebb interval between fixed cylinder and central tube, is equipped in fixed cylinder and is communicated with ebb interval excessively
Cross recirculation hole；
The upper outside of fixed cylinder has outer land, and sliding on the inside of the upper end of cylinder has the upper bearing ring for being set in fixed cylinder lower outside
Platform, the fixed cylinder outer sheath of position, which is equipped with, between corresponding outer land and sliding cylinder can pass through compressional deformation realization packing element packing and energy
The restorable packing element assembly after removing extruding, the lower part for sliding cylinder is set in the upper outside of lower contact and the two passes through seat
Envelope shear pin is installed together；
Setting for sliding cylinder uplink can be pushed by being equipped between sliding cylinder and the central tube of position between corresponding fixed cylinder and lower contact
Piston, the through-hole that builds the pressure of its uplink, the corresponding through-hole that builds the pressure can be made to piston transmission hydraulic pressure is set by being equipped on the side wall of central tube
Be equipped between sliding cylinder and the central tube of position between lower contact can be by forming certainly in the sliding cylinder for going upward to dome-shaped state
Lock limit central tube and it is upper carry central tube when release the deblocking assembly that is limited to it, it is corresponding to set between piston and deblocking assembly
The chamber that builds the pressure communicated with the through-hole that builds the pressure is formed between sliding cylinder and the central tube of position；
It is equipped with the lower pressure-bearing land being located on the outside of central tube on the inside of the sliding cylinder of position between corresponding deblocking assembly and lower contact, is in
Going upward between the sliding cylinder of dome-shaped state and lower contact has seepage flow gap, the cunning of corresponding lower position between pressure-bearing land and lower contact
Move between cylinder and central tube be equipped with can in seepage flow gap under the hydraulic action of fluid uplink dummy piston.
2. compression bidirectional bearing according to claim 1 can not flushing packer, it is characterised in that deblocking assembly includes
Fixed piston, lock ring gear cap, opening lock ring and deblocking shear pin, between the central tube and sliding cylinder of the corresponding through-hole lower position that builds the pressure
It is from top to bottom set with fixed piston and lock ring gear cap successively, lock ring gear cap is in convex shape, the opening lock ring being located in sliding cylinder
It is set on the outside of the upper convex portion of lock ring gear cap and seat is formed on the step surface of lock ring gear cap, being open between lock ring and lock ring gear cap
The deblocking ring cavity of opening upwards is fixedly installed togather on the outside of the upper inner and central tube of fixed piston, fixed piston
Lower part set is packed into deblocking ring cavity and is installed together with lock ring gear cap by unsealing shear pin；In the sliding cylinder for going upward to dome-shaped state
It is respectively equipped with the self-locking thread for being mutually matched and self-locking capable of being mutually formed on the outside of inside and opening lock ring.
3. compression bidirectional bearing according to claim 2 can not flushing packer, it is characterised in that set the upper of piston
There is implementation outer groove on the outside of portion, has base part seat in the screens on implementation outer groove on the inside of the corresponding sliding cylinder for carrying out outer shroud groove location
Land；The lower inside for setting piston builds the pressure inner groove, and correspondence builds the pressure between inner groove groove top and fixed piston in position
Circumferentially there are at least two to build the pressure through-hole on heart pipe；It is corresponding to carry out setting on the outside of piston and sliding for outer groove lower position
Between cylinder inside, between the setting on the inside of piston and on the outside of central tube of the corresponding inner groove top position that builds the pressure, corresponding fixed piston
On the inside of the fixed piston of central tube junction lower position and on the outside of central tube between and fixed piston outside and sliding
It is equipped with sealing ring between the inside of cylinder.
4. compression bidirectional bearing according to claim 1 or 2 can not flushing packer, it is characterised in that fixed cylinder includes
Adjusting sleeve and diversion pipe have limited step on the outside of the middle part of central tube, central tube outer sheath equipped be limited in top connection and
The diversion pipe of position between limited step formed ebb interval between diversion pipe and central tube, the outside of diversion pipe is from top to bottom
It is set with adjusting sleeve, packing element assembly and sliding cylinder successively, the upper inner of adjusting sleeve and the lower outside of top connection pass through screw thread
Be connected and fixed and be installed together, be equipped with sealing ring between the lower inside of adjusting sleeve and the outside of diversion pipe, corresponding top connection with
It forms water conservancy diversion ring cavity at this between sealing ring between the adjusting sleeve and diversion pipe of position, is equipped with and water conservancy diversion ring cavity phase in adjusting sleeve
Logical crosses recirculation hole, and the deflector hole that can be connected to water conservancy diversion ring cavity with cross ebb interval is equipped on diversion pipe；The lower inside of top connection
It is connected through a screw thread and is fixedly installed togather with the upper outside of central tube, connect on the lower position of both corresponding threaded connection place
It is equipped with sealing ring between the inside and the outside of central tube of head.
5. compression bidirectional bearing according to claim 3 can not flushing packer, it is characterised in that fixed cylinder includes adjusting
A whole set of and diversion pipe, has limited step on the outside of the middle part of central tube, is equipped in central tube outer sheath and is limited in top connection and limit
The diversion pipe of position, formed ebb interval between the step of position between diversion pipe and central tube, the outside of diversion pipe from top to bottom according to
Secondary to be set with adjusting sleeve, packing element assembly and sliding cylinder, the upper inner of adjusting sleeve and the lower outside of top connection are connected by screw thread
It connects and is fixedly installed togather, sealing ring is equipped between the lower inside of adjusting sleeve and the outside of diversion pipe, correspond to top connection and be somebody's turn to do
Water conservancy diversion ring cavity is formed between the adjusting sleeve and diversion pipe of position between place's sealing ring, is equipped in adjusting sleeve and is communicated with water conservancy diversion ring cavity
Cross recirculation hole, on diversion pipe be equipped with can be connected to water conservancy diversion ring cavity with cross ebb interval deflector hole；The lower inside of top connection with
The upper outside of central tube, which is connected through a screw thread, to be fixedly installed togather, the top connection of both corresponding threaded connection place lower position
Inside and the outside of central tube between be equipped with sealing ring.
6. compression bidirectional bearing according to claim 5 can not flushing packer, it is characterised in that sliding cylinder includes pressure
There is the upper pressure-bearing land for being set in diversion pipe lower outside in the upper end inside of contracting cylinder and pushing cylinder, compression cylinder, in upper pressure-bearing land
Inside and the outside of diversion pipe between be equipped with sealing ring；The lower outside of the upper inner and compression cylinder that push cylinder passes through screw thread
It is connected and fixed and is installed together, be equipped between compression cylinder outside on the inside of the pushing cylinder of both corresponding threaded connection place lower position
Sealing ring；The lower part for pushing cylinder is set in the upper outside of lower contact and the two is installed together by setting shear pin, and correspondence pushes away
It is equipped with to be located on the outside of the lower contact of position contained by the stroke range of pressure cylinder bottom end and sets above shear pin and can be connect under to pushing cylinder
Capitiform at sealing sealing ring；It sets piston to be located between pushing cylinder and central tube, and the lower seat of compression cylinder is in implementation outer shroud
On slot, sets between the outside of piston and the inside for pushing cylinder and be all provided between the outside of fixed piston and the inside for pushing cylinder
There is sealing ring；It can pushed with the self-locking thread to match on the outside of opening lock ring in having on the inside of the pushing cylinder for going upward to dome-shaped state
There is the lower pressure-bearing land below self-locking thread in cylinder inside.
7. compression bidirectional bearing according to claim 6 can not flushing packer, it is characterised in that the top of lower contact
The lower outside of inside and central tube, which is connected through a screw thread, to be fixedly installed togather, both corresponding to be threadedly coupled under top position
It is equipped with sealing ring between on the inside of connector and on the outside of central tube, there is installation annular groove on the outside of the upper end of lower contact, between installing on the outside of annular groove
Gap is set with positioned at the dummy piston pushed on the inside of cylinder, and suit is equipped on the inside of the dummy piston upper end of corresponding lower contact top position
Compression land on the outside of central tube between the inside of compression land and the outside of central tube and on the outside of dummy piston and pushes
It is equipped with sealing ring between cylinder；Correspond to lock ring gear cap and in place-centric pipe between the top for the dummy piston for going upward to dome-shaped state
It is equipped with exhaust hole.
8. compression bidirectional bearing according to claims 1 or 2 or 3 or 5 can not flushing packer, it is characterised in that packing element
Assembly includes side packing element, middle packing element and spacer ring, between corresponding outer land and sliding cylinder the fixed cylinder outside of position from top to bottom according to
It is secondary be set with while packing element, middle packing element and while packing element, be equipped between every two adjacent side packing elements and middle packing element and be set in water conservancy diversion
Spacer ring on the outside of pipe.
9. compression bidirectional bearing according to claim 4 can not flushing packer, it is characterised in that packing element assembly includes
Side packing element, middle packing element and spacer ring are from top to bottom set between corresponding outer land and sliding cylinder on the outside of the fixed cylinder of position successively
While packing element, middle packing element and while packing element, be equipped with and be set on the outside of diversion pipe between every two adjacent side packing elements and middle packing element
Spacer ring.
10. compression bidirectional bearing described according to claim 6 or 7 can not flushing packer, it is characterised in that packing element assembly
Including side packing element, middle packing element and spacer ring, from top to bottom covered successively on the outside of the diversion pipe of position between corresponding adjusting sleeve and compression cylinder
Equipped with while packing element, middle packing element and while packing element, be equipped with and be set in outside diversion pipe between every two adjacent side packing elements and middle packing element
The spacer ring of side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610138595.6A CN105804688B (en) | 2016-03-11 | 2016-03-11 | Compression bidirectional bearing can not flushing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610138595.6A CN105804688B (en) | 2016-03-11 | 2016-03-11 | Compression bidirectional bearing can not flushing packer |
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| Publication Number | Publication Date |
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| CN105804688A CN105804688A (en) | 2016-07-27 |
| CN105804688B true CN105804688B (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610138595.6A Active CN105804688B (en) | 2016-03-11 | 2016-03-11 | Compression bidirectional bearing can not flushing packer |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060682B (en) * | 2017-06-06 | 2019-04-12 | 东北大学 | A kind of high pressure self-locking packer and its set method |
| CN110259407B (en) * | 2019-07-16 | 2021-06-15 | 中国石油化工股份有限公司 | Mechanical-hydraulic internal locking compression packer |
| CN113847018A (en) * | 2021-09-30 | 2021-12-28 | 于婷婷 | General pilot production tool for packing off earth formation |
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| US7721799B2 (en) * | 2006-10-06 | 2010-05-25 | Baski, Inc. | Flow control packer (FCP) and aquifer storage and recovery (ASR) system |
| CN102011560A (en) * | 2010-11-04 | 2011-04-13 | 中国石油天然气股份有限公司 | Bidirectional pressure-bearing packer |
| CN201843570U (en) * | 2010-11-04 | 2011-05-25 | 中国石油天然气股份有限公司 | Bidirectional bearing packer |
| CN202788736U (en) * | 2012-09-05 | 2013-03-13 | 中国石油化工股份有限公司江苏油田分公司 | Two-way pressure-bearing packer |
| US8651180B2 (en) * | 2007-10-26 | 2014-02-18 | Gustavo Martin Jara | Hydraulic packer constructed in glass-fiber reinforced epoxy and stainless steel |
| CN204457578U (en) * | 2014-12-17 | 2015-07-08 | 中国石油天然气股份有限公司 | Packer |
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|---|---|---|---|---|
| US7721799B2 (en) * | 2006-10-06 | 2010-05-25 | Baski, Inc. | Flow control packer (FCP) and aquifer storage and recovery (ASR) system |
| US8651180B2 (en) * | 2007-10-26 | 2014-02-18 | Gustavo Martin Jara | Hydraulic packer constructed in glass-fiber reinforced epoxy and stainless steel |
| CN102011560A (en) * | 2010-11-04 | 2011-04-13 | 中国石油天然气股份有限公司 | Bidirectional pressure-bearing packer |
| CN201843570U (en) * | 2010-11-04 | 2011-05-25 | 中国石油天然气股份有限公司 | Bidirectional bearing packer |
| CN202788736U (en) * | 2012-09-05 | 2013-03-13 | 中国石油化工股份有限公司江苏油田分公司 | Two-way pressure-bearing packer |
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| CN105804688A (en) | 2016-07-27 |
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