CN105804688A - Compression type bidirectional pressure-bearing non-washable shaft packer - Google Patents
Compression type bidirectional pressure-bearing non-washable shaft packer Download PDFInfo
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- CN105804688A CN105804688A CN201610138595.6A CN201610138595A CN105804688A CN 105804688 A CN105804688 A CN 105804688A CN 201610138595 A CN201610138595 A CN 201610138595A CN 105804688 A CN105804688 A CN 105804688A
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- 230000006835 compression Effects 0.000 title claims abstract description 42
- 238000007906 compression Methods 0.000 title claims abstract description 42
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 25
- 238000012856 packing Methods 0.000 claims abstract description 79
- 238000007789 sealing Methods 0.000 claims abstract description 46
- 238000011010 flushing procedure Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 238000012797 qualification Methods 0.000 abstract description 3
- 239000011229 interlayer Substances 0.000 abstract description 2
- 230000005465 channeling Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000011112 process operation Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- 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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- 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 invention relates to the technical field of packers and provides a compression type bidirectional pressure-bearing non-washable shaft packer. The compression type bidirectional pressure-bearing non-washable shaft packer comprises an upper connector, a central pipe, a lower connector, a fixed cylinder, a sliding cylinder and a setting piston. The inner side of the lower portion of the upper connector and the inner side of the upper portion of the central pipe are fixedly installed together. The inner side of the upper portion of the lower connector and the inner side of the lower portion of the central pipe are fixedly installed together. The outer side of the lower portion of the upper connector and the inner side of the upper portion of the fixed cylinder are fixedly installed together. The central pipe is sleeved with the portion, corresponding to the lower portion of the upper connector, of the fixed cylinder, and an overflow gap exists between the fixed cylinder and the central pipe. Overflow through holes communicating with the overflow gap are formed in the fixed cylinder. According to the compression type bidirectional pressure-bearing non-washable shaft packer, operation of the setting process and the unsetting process is easy and convenient, and pressureout is unlikely to happen; and in addition, bidirectional pressure-bearing can be achieved in the packing process, good pressure bearing performance is achieved, the sealing effect is good, leakage is unlikely to occur, interlayer channeling can be effectively prevented, the qualification rate of separate production and injection is increased, and the technological requirements for layering exploitation are met.
Description
Technical field
The present invention relates to packer technology field, be a kind of compression bidirectional bearing not well packer capable of flushing well.
Background technology
Along with the oil field development time increases, interlayer contradiction is increasing, and the problem that high pressure zone pours in down a chimney to low laminate layer becomes increasingly conspicuous, and has a strong impact on oil field production capacity and demixing injection-production effect.Present oil field many employings demixing injection-production well packer, when top formation pressure is more than sealing pressure, top oil reservoir liquid will lower portion oil reservoir seepage；When bottom formation pressure is more than when sealing pressure, bottom oil layer liquid will to top oil reservoir seepage；It is consequently formed crossflow, affects the effect of demixing injection-production.At present, the compression packer of domestic each oil field research and development, it in use exists to bear down presses, it is impossible to bear pressure reduction, and the problem that bearing capacity does not reach requirement, it is impossible to realize bidirectional bearing sets and easily builds the pressure, and seals and deblocking weak effect.
Summary of the invention
The invention provides a kind of compression bidirectional bearing not well packer capable of flushing well, overcome the deficiency of above-mentioned prior art, what it can effectively solve that existing packer exists cannot realize bidirectional bearing, sets and easily builds the pressure, and seals and the problem of deblocking weak effect.
The technical scheme is that and realized by following measures: a kind of compression bidirectional bearing not well packer capable of flushing well, including top connection, central canal, lower contact, fixing cylinder, sliding cylinder, packing element assembly, set shear pin, deblocking assembly, dummy piston and set piston；The lower inside of top connection and the upper inner of central canal are fixedly installed togather, and the upper inner of lower contact and the lower inside of central canal are fixedly installed togather；The upper inner of the lower outside of top connection and fixing cylinder is fixedly installed togather, the fixing barrel casing of corresponding top connection lower position is loaded on outside central canal and had ebb interval between fixing cylinder and central canal, is provided with the opening excessively communicated with ebb interval excessively on fixing cylinder；The upper outside of fixing cylinder has outer land, the upper pressure-bearing land being set in fixing cylinder lower outside is had inside the upper end of sliding cylinder, between corresponding outer land and sliding cylinder the fixing cylinder outer sheath of position equipped with can by compressional deformation realize packing element insulate and can after removing extruding restorable packing element assembly, the bottom of sliding cylinder is set in the upper outside of lower contact and both pass through to set shear pin and are installed together；Corresponding fixing be provided with between sliding cylinder and the central canal of position between cylinder and lower contact sliding cylinder can be promoted up set piston, being provided with on the sidewall of central canal can to setting the through hole that builds the pressure that piston transmission hydraulic pressure makes it up, correspondence build the pressure be provided with between sliding cylinder and the central canal of position between through hole and lower contact can by be that the sliding cylinder going upward to dome-shaped state forms self-locking limit central canal and releases deblocking assembly that it is spacing when lifting up central canal, correspondence sets the chamber that builds the pressure that between the sliding cylinder of position between piston with deblocking assembly and central canal, formation communicates with the through hole that builds the pressure；It is provided with the lower pressure-bearing land outside central canal inside the sliding cylinder of position between corresponding deblocking assembly and lower contact, have seepage flow gap between sliding cylinder and the lower contact of dome-shaped state in going upward to, corresponding lower be provided with between sliding cylinder and the central canal of position between pressure-bearing land and lower contact can be up under the hydraulic action of fluid in seepage flow gap dummy piston.
Further optimization and/or improvements to foregoing invention technical scheme are presented herein below:
Above-mentioned deblocking assembly can include fixed piston, lock ring gear cap, opening lock ring and deblocking shear pin, correspondence build the pressure through hole lower position central canal and sliding cylinder between be from top to bottom set with successively fixed piston and lock ring gear cap, lock ring gear cap is convex shape, it is positioned at the hatch lock ring set of sliding cylinder and is loaded on outside the upper convex portion of lock ring gear cap and seat keeps off on the step surface of cap in lock ring, the deblocking ring cavity of opening upwards is formed between opening lock ring and lock ring gear cap, the upper inner of fixed piston and the outside of central canal are fixedly installed togather, the bottom set of fixed piston is loaded in deblocking ring cavity and is installed together by deblocking shear pin with lock ring gear cap；It is respectively equipped with, with outside opening lock ring, the self-locking thread being mutually matched and self-locking being mutually formed inside the sliding cylinder of dome-shaped state in going upward to.
The above-mentioned upper outside setting piston has can carry out outer groove, has base part seat in the screens land carried out on outer groove inside the corresponding sliding cylinder carrying out outer groove position；Setting the lower inside of piston to build the pressure inner groove, correspondence builds the pressure circumferentially has at least two to build the pressure through hole on the central canal of position between inner groove groove top and fixed piston；Corresponding carry out outer groove lower position set outside piston with inside sliding cylinder between, the corresponding inner groove top position that builds the pressure set inside piston with central canal outside between, inside the fixed piston of corresponding fixed piston and central canal junction lower position and outside central canal between and outside and the inner side of sliding cylinder of fixed piston between be equipped with sealing ring.
Above-mentioned fixing cylinder can include adjusting sleeve and mozzle, limited location step outside the middle part of central canal, at central canal outer sheath equipped with the mozzle being limited between top connection and limited step position, ebb interval was formed between mozzle and central canal, the outside of mozzle is from top to bottom set with adjusting sleeve successively, packing element assembly and sliding cylinder, the upper inner of adjusting sleeve and the lower outside of top connection are threaded connection and are fixedly installed togather, it is provided with sealing ring between lower inside and the outside of mozzle of adjusting sleeve, water conservancy diversion ring cavity is formed between adjusting sleeve and the mozzle of position between corresponding top connection and this place's sealing ring, adjusting sleeve is provided with the opening excessively communicated with water conservancy diversion ring cavity, mozzle is provided with the pod apertures that can connect water conservancy diversion ring cavity with cross ebb interval；The lower inside of top connection and the upper outside of central canal are threaded connection and are fixedly installed togather, and are provided with sealing ring between inner side and the outside of central canal of the top connection of both threaded connection place lower positions corresponding.
Above-mentioned sliding cylinder can include compression cylinder and push cylinder, has the upper pressure-bearing land being set in mozzle lower outside, be provided with sealing ring between inner side and the outside of mozzle of upper pressure-bearing land inside the upper end of compression cylinder；The lower outside of the upper inner and compression cylinder that push cylinder is threaded connection and is fixedly installed togather, and is provided with sealing ring inside the pushing cylinder of both threaded connection place lower positions corresponding and between outside compression cylinder；Push the bottom of cylinder and be set in the upper outside of lower contact and both are installed together by setting shear pin, corresponding push to be provided with outside the lower contact of position contained by the stroke range of cylinder bottom to be positioned at set above shear pin and can form, with lower contact, the sealing ring sealed to pushing cylinder；Set piston pushing between cylinder and central canal, and the lower seat of compression cylinder is in carrying out on outer groove, set between the outside of piston and the inner side pushing cylinder and be equipped with sealing ring between the outside of fixed piston and the inner side pushing cylinder；Have inside cylinder with the self-locking thread that matches outside opening lock ring, can have, inside cylinder, the lower pressure-bearing land being positioned at below self-locking thread pushing in going upward to pushing of dome-shaped state.
The upper inner of above-mentioned lower contact and the lower outside of central canal can be threaded connection and be fixedly installed togather, it is provided with sealing ring between inside the lower contact of both threaded top positions corresponding and outside central canal, installation annular groove is had outside the upper end of lower contact, annular groove lateral gap is installed and is set with the dummy piston being positioned at inside pushing cylinder, it is provided with, inside the dummy piston upper end of corresponding lower contact top position, the pressurized land being set in outside central canal, between inner side and the outside of central canal of pressurized land and outside dummy piston and between pushing cylinder, is equipped with sealing ring；Between corresponding lock ring gear cap and the top being the dummy piston going upward to dome-shaped state, place-centric pipe is provided with exhaust hole.
Above-mentioned packing element assembly can include limit packing element, middle packing element and spacer ring, from top to bottom it is set with limit packing element, middle packing element and limit packing element successively outside the mozzle of position between corresponding adjusting sleeve and compression cylinder, is equipped with, between every two adjacent limit packing element and middle packing elements, the spacer ring being set in outside mozzle.
Present configuration is reasonable and compact, it sets and deblocking process operation is simple and convenient, the phenomenon that builds the pressure not easily occurs, and the present invention can realize bidirectional bearing in packing process, has good load performance, its good sealing effect, not easy to leak, can effectively stop crossflow, improves the qualification rate of separate production and injection, and meet the technology requirement of hierarchical-development, there is feature safe, laborsaving, easy, efficient.
Accompanying drawing explanation
The master that accompanying drawing 1 is the preferred embodiment first half looks half section structural representation.
The master that accompanying drawing 2 is preferred embodiment lower half looks half section structural representation.
Accompanying drawing 3 is that preferred embodiment first half master under setting and bear low pressure state looks half section structural representation.
Accompanying drawing 4 is that preferred embodiment lower half master under setting and bear low pressure state looks half section structural representation.
Coding in accompanying drawing is respectively as follows: 1 for top connection, manage centered by 2, 3 is lower contact, 4 for setting shear pin, 5 is dummy piston, 6 was opening, 7 is upper pressure-bearing land, 8 for setting piston, 9 is the through hole that builds the pressure, 10 is lower pressure-bearing land, 11 is fixed piston, 12 keep off cap for lock ring, 13 is opening lock ring, 14 is deblocking shear pin, 15 is self-locking thread, 16 is sealing ring, 17 is adjusting sleeve, 18 is mozzle, 19 is water conservancy diversion ring cavity, 20 is pod apertures, 21 is compression cylinder, 22 for pushing cylinder, 23 is pressurized land, 24 is exhaust hole, 25 is limit packing element, 26 is middle packing element, 27 is spacer ring.
Detailed description of the invention
The present invention, not by the restriction of following embodiment, can determine specific embodiment according to technical scheme and practical situation.
In the present invention, for the ease of describing, the Butut mode that the description of the relative position relation of each parts is all according to Figure of description 1 is described, as: the position relationship of forward and backward, upper and lower, left and right etc. is based on what the Butut direction of Figure of description was determined.
Below in conjunction with embodiment and accompanying drawing, the invention will be further described:
As shown in accompanying drawing 1,2,3,4, this compression bidirectional bearing not well packer capable of flushing well includes top connection 1, central canal 2, lower contact 3, fixing cylinder, sliding cylinder, packing element assembly, sets shear pin 4, deblocking assembly, dummy piston 5 and set piston 8；The upper inner of the lower inside of top connection 1 and central canal 2 is fixedly installed togather, and the lower inside of the upper inner of lower contact 3 and central canal 2 is fixedly installed togather；The upper inner of the lower outside of top connection 1 and fixing cylinder is fixedly installed togather, the fixing barrel casing of corresponding top connection 1 lower position is loaded on outside central canal 2 and had ebb interval between fixing cylinder and central canal 2, is provided with the opening 6 excessively communicated with ebb interval excessively on fixing cylinder；The upper outside of fixing cylinder has outer land, the upper pressure-bearing land 7 being set in fixing cylinder lower outside is had inside the upper end of sliding cylinder, between corresponding outer land and sliding cylinder the fixing cylinder outer sheath of position equipped with can by compressional deformation realize packing element insulate and can after removing extruding restorable packing element assembly, the bottom of sliding cylinder is set in the upper outside of lower contact 3 and both pass through to set shear pin 4 and are installed together；Corresponding fixing be provided with between sliding cylinder and the central canal 2 of position between cylinder and lower contact 3 sliding cylinder can be promoted up set piston 8, the sidewall of central canal 2 is provided with and can transmit, to setting piston 8, the through hole 9 that builds the pressure that hydraulic pressure makes it up, correspondence build the pressure be provided with between sliding cylinder and the central canal 2 of position between through hole 9 and lower contact 3 can by be that the sliding cylinder going upward to dome-shaped state forms self-locking limit central canal 2 and releases deblocking assembly that it is spacing when lifting up central canal 2, correspondence sets the chamber that builds the pressure that between the sliding cylinder of position between piston 8 with deblocking assembly and central canal 2, formation communicates with the through hole 9 that builds the pressure；It is provided with the lower pressure-bearing land 10 outside central canal 2 inside the sliding cylinder of position between corresponding deblocking assembly and lower contact 3, having seepage flow gap between the sliding cylinder of dome-shaped state and lower contact 3 in going upward to, correspondence is provided with down dummy piston 5 that can be up under the hydraulic action of fluid in seepage flow gap between sliding cylinder and the central canal 2 of position between pressure-bearing land 10 and lower contact 3.
In use, can first the present invention be connected in pipe string, and down to predeterminated position in well, then to pressure water injection in oil pipe, now high-pressure fluid will enter in central canal 2, and enter, by the through hole 9 that builds the pressure, the intracavity that builds the pressure, thus act on and set on piston 8, and transfer the force to set shear pin 4 by setting piston 8 pressurized, and then cut off and set shear pin 4, now setting piston 8 will drive sliding cylinder up, make its deformation thus extruding packing element assembly and realize packing element packing, now sliding cylinder will go upward to top and always be shaped as self-locking with deblocking, enable the invention to keep when release setting, seepage flow gap will be formed between bottom and the lower contact 3 of sliding cylinder simultaneously, realization is insulated effect by the present invention；In the packing process of the present invention, corresponding top connection 1 and set and enclose the upper pressure pocket of formation between the fixing cylinder of position between piston 8 and central canal 2 and sliding cylinder, and mistake opening 6 passed through ebb interval and communicated with upper pressure pocket, when the pressure born when packer top is more than low pressure, high-pressure fluid will enter in upper pressure pocket by crossing opening 6, thus acting on pressure-bearing land 7 and setting piston on 8, the high-pressure fluid now entered in upper pressure pocket will further enhance the sealing function of packing element assembly by upper pressure-bearing land 7 is applied active force upwards, thus offsetting upper pressure, guarantee the sealing function that its maintenance is good；When the pressure born when packer bottom is more than upper pressure, high-pressure fluid will act on dummy piston 5 by seepage flow gap, thus promoting dummy piston 5 to go upward to the bottom being against lower pressure-bearing land 10, thus can apply active force upwards by downward pressure-bearing land 10 and further enhance the sealing function of packing element assembly, thus offsetting low pressure, it is ensured that the sealing function that its maintenance is good；When needs trip out the present invention, can pass through to lift up tubing string thus applying active force upwards to central canal 2, the deblocking assembly now forming self-locking with sliding cylinder will release spacing to central canal 2, guarantee that central canal 2 can be up smoothly, central canal 2 is by up for fixing for drive cylinder Relative sliding cylinder simultaneously, releasing the squeezing action power to packing element assembly gradually, packing element assembly, by by self elastic return original state, makes the present invention realize deblocking；The present invention set and deblocking process operation is simple and convenient, the phenomenon that builds the pressure not easily occurs, and the present invention can realize bidirectional bearing in packing process, there is good load performance, its good sealing effect, not easy to leak, can effectively stop crossflow, improve the qualification rate of separate production and injection, and meet the technology requirement of hierarchical-development.
According to actual needs, above-mentioned compression bidirectional bearing not well packer capable of flushing well can be made further optimization and/or improvements:
Such as accompanying drawing 1, 2, 3, shown in 4, deblocking assembly includes fixed piston 11, lock ring gear cap 12, opening lock ring 13 and deblocking shear pin 14, correspondence build the pressure through hole 9 lower position central canal 2 and sliding cylinder between be from top to bottom set with successively fixed piston 11 and lock ring gear cap 12, lock ring gear cap 12 is in convex shape, it is positioned at the opening lock ring 13 of sliding cylinder and is set in outside the upper convex portion of lock ring gear cap 12 and seat keeps off on the step surface of cap 12 in lock ring, the deblocking ring cavity of opening upwards is formed between opening lock ring 13 and lock ring gear cap 12, the outside of the upper inner of fixed piston 11 and central canal 2 is fixedly installed togather, the bottom set of fixed piston 11 is loaded in deblocking ring cavity and is installed together by deblocking shear pin 14 with lock ring gear cap 12；It is respectively equipped with, with outside opening lock ring 13, the self-locking thread 15 being mutually matched and mutually forming self-locking inside the sliding cylinder of dome-shaped state in going upward to.In setting process, self-locking will be formed in opening lock ring 13 by self-locking thread 15 in the sliding cylinder going upward to dome-shaped state, and thus spacing lock ring gear cap 12, fixed piston 11 and central canal 2, enable the invention to keep when release setting；When it enters deblocking process, lifting up central canal 2 can cut off deblocking shear pin 14, so that fixed piston 11 is up with central canal 2, makes opening lock ring 13 and lock ring gear cap 12 keep original position simultaneously, so can release spacing to central canal 2 of deblocking assembly；This deblocking assembly structure is ingenious, adopt opening lock ring 13 and self-locking thread 15 can make to realize rapidly between opening lock ring 13 and sliding cylinder self-locking, and can reuse, make deblocking assembly be positioned at the through hole that builds the pressure simultaneously and can effectively prevent from building the pressure for 9 times, it is ensured that being smoothed out of deblocking.According to demand, keep off at fixed piston 11 and lock ring and can be uniformly distributed with at least six deblocking shear pin 14 along the circumference between cap 12, it so can be made to be more uniformly stressed, it is simple to deblocking shear pin 14 is cut off smoothly, it is ensured that deblocking smoothly completes.
As shown in accompanying drawing 1,2,3,4, the upper outside setting piston 8 has implementation outer groove, has base part seat in the screens land carried out on outer groove inside the corresponding sliding cylinder carrying out outer groove position；Setting the lower inside of piston 8 to build the pressure inner groove, correspondence builds the pressure circumferentially has at least two to build the pressure through hole 9 on the central canal 2 of position between inner groove groove top and fixed piston 11；Corresponding carry out outer groove lower position set outside piston 8 with inside sliding cylinder between, the corresponding inner groove top position that builds the pressure set inside piston 8 with central canal 2 outside between, inside the fixed piston 11 of corresponding fixed piston 11 and central canal 2 junction lower position and outside central canal 2 between and outside and the inner side of sliding cylinder of fixed piston 11 between be equipped with sealing ring 16.Correspondence thus can be made to set the chamber that builds the pressure that between the sliding cylinder of position between piston 8 with fixed piston 11 and central canal 2, formation communicates with the through hole 9 that builds the pressure；When high-pressure fluid will act on the groove top of the inner groove that builds the pressure after entering the chamber that builds the pressure, thus promotion sets piston 8 and drives sliding cylinder up.According to demand, central canal 2 is uniformly distributed with along the circumference at least six and builds the pressure through hole 9, it so can be made to be more uniformly stressed, it is simple to the shear pin of fast and stable sets shear pin 4 and extruding packing element assembly.
nullSuch as accompanying drawing 1、2、3、Shown in 4，Fixing cylinder includes adjusting sleeve 17 and mozzle 18，Limited location step outside the middle part of central canal 2，At central canal 2 outer sheath equipped with the mozzle 18 being limited in position between top connection 1 and limited step，Ebb interval was formed between mozzle 18 and central canal 2，The outside of mozzle 18 is from top to bottom set with adjusting sleeve 17 successively、Packing element assembly and sliding cylinder，The lower outside of the upper inner of adjusting sleeve 17 and top connection 1 is threaded connection and is fixedly installed togather，It is provided with sealing ring 16 between lower inside and the outside of mozzle 18 of adjusting sleeve 17，Water conservancy diversion ring cavity 19 is formed between adjusting sleeve 17 and the mozzle 18 of position between corresponding top connection 1 and this place's sealing ring 16，Adjusting sleeve 17 is provided with the opening 6 excessively communicated with water conservancy diversion ring cavity 19，Mozzle 18 is provided with the pod apertures 20 that can connect water conservancy diversion ring cavity 19 with cross ebb interval；The upper outside of the lower inside of top connection 1 and central canal 2 is threaded connection and is fixedly installed togather, and is provided with sealing ring 16 between inner side and the outside of central canal 2 of the top connection 1 of both threaded connection place lower positions corresponding.In use, adjusting sleeve 17 can be considered the outer land of fixing cylinder, and realize packing element assembly upper end spacing；Adjusting sleeve 17 and mozzle 18 can adopt split type or integral type, adopt that split type to make it process laborsaving with easier for installation.According to demand, adjusting sleeve 17 can be uniformly distributed with along the circumference at least six and cross opening 6, mozzle 18 can be uniformly distributed with along the circumference at least six pod apertures 20, so can be easy to high-pressure spray physical ability and more quickly and uniformly tap, thus disperseing upper pressure.
As shown in accompanying drawing 1,2,3,4, sliding cylinder includes compression cylinder 21 and pushes cylinder 22, has the upper pressure-bearing land 7 being set in mozzle 18 lower outside, be provided with sealing ring 16 between the inner side and the outside of mozzle 18 of upper pressure-bearing land 7 inside the upper end of compression cylinder 21；The lower outside of the upper inner and compression cylinder 21 that push cylinder 22 is threaded connection and is fixedly installed togather, and is provided with sealing ring 16 inside the pushing cylinder 22 of both threaded connection place lower positions corresponding and between outside compression cylinder 21；Push the bottom of cylinder 22 and be set in the upper outside of lower contact 3 and both are installed together by setting shear pin 4, corresponding push to be provided with outside the lower contact 3 of position contained by the stroke range of cylinder 22 bottom to be positioned at set above shear pin 4 and can form, with lower contact 3, the sealing ring 16 sealed to pushing cylinder 22；Set piston 8 pushing between cylinder 22 and central canal 2, and the lower seat of compression cylinder 21 is in carrying out on outer groove, set between the outside of piston 8 and the inner side pushing cylinder 22 and be equipped with sealing ring 16 between the outside of fixed piston 11 and the inner side pushing cylinder 22；Have inside cylinder 22 with the self-locking thread 15 that matches outside opening lock ring 13, can have, inside cylinder 22, the lower pressure-bearing land 10 being positioned at below self-locking thread 15 pushing in going upward to pushing of dome-shaped state.Pushing cylinder 22 so can be made when going upward to top, and the sealing ring 16 installed outside lower contact 3 can be positioned at the lower section pushing cylinder 22, so that it is guaranteed that have seepage flow gap between the sliding cylinder of dome-shaped state and lower contact 3 in going upward to, enables the invention to bear down smoothly press；In use, compression cylinder 21 can be considered screens land, and realizes the extruding to packing element assembly bottom when up, makes packing element assembly can realize packing element packing by extruding, makes the present invention set smoothly；Compression cylinder 21 and push cylinder 22 and can adopt split type or integral type, adopts that split type to make it process laborsaving with easier for installation.According to demand, at least six can be uniformly distributed with along the circumference between pushing cylinder 22 and lower contact 3 and set shear pin 4.It so can be made to be more uniformly stressed, it is simple to setting shear pin 4 can cut off smoothly.
Such as accompanying drawing 1, 2, 3, shown in 4, the lower outside of the upper inner of lower contact 3 and central canal 2 is threaded connection and is fixedly installed togather, it is provided with sealing ring 16 between inside the lower contact 3 of both threaded top positions corresponding and outside central canal 2, installation annular groove is had outside the upper end of lower contact 3, annular groove lateral gap is installed and is set with the dummy piston 5 being positioned at inside pushing cylinder 22, it is provided with, inside dummy piston 5 upper end of corresponding lower contact 3 top position, the pressurized land 23 being set in outside central canal 2, it is equipped with sealing ring 16 between inner side and the outside of central canal 2 of pressurized land 23 and outside dummy piston 5 and between pushing cylinder 22；Between corresponding lock ring gear cap 12 and the top being the dummy piston 5 going upward to dome-shaped state, place-centric pipe 2 is provided with exhaust hole 24.In use, when the pressure born when packer bottom is more than upper pressure, high-pressure fluid is by by the installation annular groove between seepage flow gap entrance dummy piston 5 and lower contact 3, and act on the bottom of pressurized land 23, thus promoting dummy piston 5 to go upward to the bottom being against lower pressure-bearing land 10, thus can apply active force upwards by downward pressure-bearing land 10 and further enhance the sealing function of packing element assembly, thus offsetting low pressure, it is ensured that the present invention can keep good sealing function.
As shown in accompanying drawing 1,2,3,4, packing element assembly includes limit packing element 25, middle packing element 26 and spacer ring 27, from top to bottom it is set with limit packing element 25, middle packing element 26 and limit packing element 25 successively outside the mozzle 18 of position between corresponding adjusting sleeve 17 and compression cylinder 21, is equipped with, between every two adjacent limit packing element 25 and middle packing elements 26, the spacer ring 27 being set in outside mozzle 18.Packing element assembly so can be made to have the good performance that sets and simple in construction, easy for installation laborsaving.According to demand, when fixing cylinder or/and when sliding cylinder all adopts integral structure, the packing element assembly of this structure is installed and can is: be from top to bottom set with limit packing element 25, middle packing element 26 and limit packing element 25 successively outside the fixing cylinder of position between corresponding outer land and sliding cylinder；It addition, packing element assembly may be used without other existing known technology.
Above technical characteristic constitutes highly preferred embodiment of the present invention, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
Claims (10)
1. a compression bidirectional bearing not well packer capable of flushing well, it is characterised in that include top connection, central canal, lower contact, fixing cylinder, sliding cylinder, packing element assembly, set shear pin, deblocking assembly, dummy piston and set piston；The lower inside of top connection and the upper inner of central canal are fixedly installed togather, and the upper inner of lower contact and the lower inside of central canal are fixedly installed togather；
The upper inner of the lower outside of top connection and fixing cylinder is fixedly installed togather, the fixing barrel casing of corresponding top connection lower position is loaded on outside central canal and had ebb interval between fixing cylinder and central canal, is provided with the opening excessively communicated with ebb interval excessively on fixing cylinder；
The upper outside of fixing cylinder has outer land, the upper pressure-bearing land being set in fixing cylinder lower outside is had inside the upper end of sliding cylinder, between corresponding outer land and sliding cylinder the fixing cylinder outer sheath of position equipped with can by compressional deformation realize packing element insulate and can after removing extruding restorable packing element assembly, the bottom of sliding cylinder is set in the upper outside of lower contact and both pass through to set shear pin and are installed together；
Corresponding fixing be provided with between sliding cylinder and the central canal of position between cylinder and lower contact sliding cylinder can be promoted up set piston, being provided with on the sidewall of central canal can to setting the through hole that builds the pressure that piston transmission hydraulic pressure makes it up, correspondence build the pressure be provided with between sliding cylinder and the central canal of position between through hole and lower contact can by be that the sliding cylinder going upward to dome-shaped state forms self-locking limit central canal and releases deblocking assembly that it is spacing when lifting up central canal, correspondence sets the chamber that builds the pressure that between the sliding cylinder of position between piston with deblocking assembly and central canal, formation communicates with the through hole that builds the pressure；
It is provided with the lower pressure-bearing land outside central canal inside the sliding cylinder of position between corresponding deblocking assembly and lower contact, have seepage flow gap between sliding cylinder and the lower contact of dome-shaped state in going upward to, corresponding lower be provided with between sliding cylinder and the central canal of position between pressure-bearing land and lower contact can be up under the hydraulic action of fluid in seepage flow gap dummy piston.
2. compression bidirectional bearing not well packer capable of flushing well according to claim 1, it is characterized in that deblocking assembly includes fixed piston, lock ring gear cap, opening lock ring and deblocking shear pin, correspondence build the pressure through hole lower position central canal and sliding cylinder between be from top to bottom set with successively fixed piston and lock ring gear cap, lock ring gear cap is convex shape, it is positioned at the hatch lock ring set of sliding cylinder and is loaded on outside the upper convex portion of lock ring gear cap and seat keeps off on the step surface of cap in lock ring, the deblocking ring cavity of opening upwards is formed between opening lock ring and lock ring gear cap, the upper inner of fixed piston and the outside of central canal are fixedly installed togather, the bottom set of fixed piston is loaded in deblocking ring cavity and is installed together by deblocking shear pin with lock ring gear cap；It is respectively equipped with, with outside opening lock ring, the self-locking thread being mutually matched and self-locking being mutually formed inside the sliding cylinder of dome-shaped state in going upward to.
3. compression bidirectional bearing not well packer capable of flushing well according to claim 2, it is characterised in that the upper outside setting piston has implementation outer groove, has base part seat in the screens land carried out on outer groove inside the corresponding sliding cylinder carrying out outer groove position；Setting the lower inside of piston to build the pressure inner groove, correspondence builds the pressure circumferentially has at least two to build the pressure through hole on the central canal of position between inner groove groove top and fixed piston；Corresponding carry out outer groove lower position set outside piston with inside sliding cylinder between, the corresponding inner groove top position that builds the pressure set inside piston with central canal outside between, inside the fixed piston of corresponding fixed piston and central canal junction lower position and outside central canal between and outside and the inner side of sliding cylinder of fixed piston between be equipped with sealing ring.
null4. compression bidirectional bearing not well packer capable of flushing well according to claim 1 and 2，It is characterized in that fixing cylinder includes adjusting sleeve and mozzle，Limited location step outside the middle part of central canal，At central canal outer sheath equipped with the mozzle being limited between top connection and limited step position，Ebb interval was formed between mozzle and central canal，The outside of mozzle is from top to bottom set with adjusting sleeve successively、Packing element assembly and sliding cylinder，The upper inner of adjusting sleeve and the lower outside of top connection are threaded connection and are fixedly installed togather，It is provided with sealing ring between lower inside and the outside of mozzle of adjusting sleeve，Water conservancy diversion ring cavity is formed between adjusting sleeve and the mozzle of position between corresponding top connection and this place's sealing ring，Adjusting sleeve is provided with the opening excessively communicated with water conservancy diversion ring cavity，Mozzle is provided with the pod apertures that can connect water conservancy diversion ring cavity with cross ebb interval；The lower inside of top connection and the upper outside of central canal are threaded connection and are fixedly installed togather, and are provided with sealing ring between inner side and the outside of central canal of the top connection of both threaded connection place lower positions corresponding.
null5. compression bidirectional bearing not well packer capable of flushing well according to claim 3，It is characterized in that fixing cylinder includes adjusting sleeve and mozzle，Limited location step outside the middle part of central canal，At central canal outer sheath equipped with the mozzle being limited between top connection and limited step position，Ebb interval was formed between mozzle and central canal，The outside of mozzle is from top to bottom set with adjusting sleeve successively、Packing element assembly and sliding cylinder，The upper inner of adjusting sleeve and the lower outside of top connection are threaded connection and are fixedly installed togather，It is provided with sealing ring between lower inside and the outside of mozzle of adjusting sleeve，Water conservancy diversion ring cavity is formed between adjusting sleeve and the mozzle of position between corresponding top connection and this place's sealing ring，Adjusting sleeve is provided with the opening excessively communicated with water conservancy diversion ring cavity，Mozzle is provided with the pod apertures that can connect water conservancy diversion ring cavity with cross ebb interval；The lower inside of top connection and the upper outside of central canal are threaded connection and are fixedly installed togather, and are provided with sealing ring between inner side and the outside of central canal of the top connection of both threaded connection place lower positions corresponding.
6. compression bidirectional bearing not well packer capable of flushing well according to claim 5, it is characterized in that sliding cylinder includes compression cylinder and pushes cylinder, there is the upper pressure-bearing land being set in mozzle lower outside inside the upper end of compression cylinder, between inner side and the outside of mozzle of upper pressure-bearing land, be provided with sealing ring；The lower outside of the upper inner and compression cylinder that push cylinder is threaded connection and is fixedly installed togather, and is provided with sealing ring inside the pushing cylinder of both threaded connection place lower positions corresponding and between outside compression cylinder；Push the bottom of cylinder and be set in the upper outside of lower contact and both are installed together by setting shear pin, corresponding push to be provided with outside the lower contact of position contained by the stroke range of cylinder bottom to be positioned at set above shear pin and can form, with lower contact, the sealing ring sealed to pushing cylinder；Set piston pushing between cylinder and central canal, and the lower seat of compression cylinder is in carrying out on outer groove, set between the outside of piston and the inner side pushing cylinder and be equipped with sealing ring between the outside of fixed piston and the inner side pushing cylinder；Have inside cylinder with the self-locking thread that matches outside opening lock ring, can have, inside cylinder, the lower pressure-bearing land being positioned at below self-locking thread pushing in going upward to pushing of dome-shaped state.
7. compression bidirectional bearing not well packer capable of flushing well according to claim 6, it is characterized in that the lower outside of the upper inner of lower contact and central canal is threaded connection to be fixedly installed togather, it is provided with sealing ring between inside the lower contact of both threaded top positions corresponding and outside central canal, installation annular groove is had outside the upper end of lower contact, annular groove lateral gap is installed and is set with the dummy piston being positioned at inside pushing cylinder, it is provided with, inside the dummy piston upper end of corresponding lower contact top position, the pressurized land being set in outside central canal, it is equipped with sealing ring between inner side and the outside of central canal of pressurized land and outside dummy piston and between pushing cylinder；Between corresponding lock ring gear cap and the top being the dummy piston going upward to dome-shaped state, place-centric pipe is provided with exhaust hole.
8. the compression bidirectional bearing not well packer capable of flushing well according to claim 1 or 2 or 3 or 5, it is characterized in that packing element assembly includes limit packing element, middle packing element and spacer ring, from top to bottom it is set with limit packing element, middle packing element and limit packing element successively outside the fixing cylinder of position between corresponding outer land and sliding cylinder, is equipped with, between every two adjacent limit packing element and middle packing elements, the spacer ring being set in outside mozzle.
9. compression bidirectional bearing not well packer capable of flushing well according to claim 4, it is characterized in that packing element assembly includes limit packing element, middle packing element and spacer ring, from top to bottom it is set with limit packing element, middle packing element and limit packing element successively outside the fixing cylinder of position between corresponding outer land and sliding cylinder, is equipped with, between every two adjacent limit packing element and middle packing elements, the spacer ring being set in outside mozzle.
10. the compression bidirectional bearing not well packer capable of flushing well according to claim 6 or 7, it is characterized in that packing element assembly includes limit packing element, middle packing element and spacer ring, from top to bottom it is set with limit packing element, middle packing element and limit packing element successively outside the mozzle of position between corresponding adjusting sleeve and compression cylinder, is equipped with, between every two adjacent limit packing element and middle packing elements, the spacer ring being set in outside mozzle.
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| CN201610138595.6A CN105804688B (en) | 2016-03-11 | 2016-03-11 | Compression bidirectional bearing can not flushing packer |
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| CN201610138595.6A CN105804688B (en) | 2016-03-11 | 2016-03-11 | Compression bidirectional bearing can not flushing packer |
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| CN105804688A true CN105804688A (en) | 2016-07-27 |
| CN105804688B CN105804688B (en) | 2018-09-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060682A (en) * | 2017-06-06 | 2017-08-18 | 东北大学 | A kind of high pressure self-locking packer and its set method |
| CN110259407A (en) * | 2019-07-16 | 2019-09-20 | 中国石油化工股份有限公司 | A kind of machine liquid inner-lock-type compression packer |
| CN113847018A (en) * | 2021-09-30 | 2021-12-28 | 于婷婷 | General pilot production tool for packing off earth formation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 pressure-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 (CN) |
-
2016
- 2016-03-11 CN CN201610138595.6A patent/CN105804688B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 pressure-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 |
| CN204457578U (en) * | 2014-12-17 | 2015-07-08 | 中国石油天然气股份有限公司 | Packer (CN) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060682A (en) * | 2017-06-06 | 2017-08-18 | 东北大学 | A kind of high pressure self-locking packer and its set method |
| CN107060682B (en) * | 2017-06-06 | 2019-04-12 | 东北大学 | A kind of high pressure self-locking packer and its set method |
| CN110259407A (en) * | 2019-07-16 | 2019-09-20 | 中国石油化工股份有限公司 | A kind of machine liquid inner-lock-type compression packer |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105804688B (en) | 2018-09-28 |
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