CN203626707U - Double-staged cylinder sleeve packer - Google Patents
Double-staged cylinder sleeve packer Download PDFInfo
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- CN203626707U CN203626707U CN201320806418.2U CN201320806418U CN203626707U CN 203626707 U CN203626707 U CN 203626707U CN 201320806418 U CN201320806418 U CN 201320806418U CN 203626707 U CN203626707 U CN 203626707U
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Abstract
The utility model relates to the technical field of a packing device in oil and gas field well-completion practice and concretely relates to a double-staged cylinder sleeve packer. The double-staged cylinder sleeve packer comprises an upper joint, a shaft sleeve body, a shearing pin, an upper cylinder sleeve, a seal cartridge, a lower cylinder sleeve, a retaining ring, a rubber sleeve packing device and a lower joint, wherein the inner side of the lower part of the upper joint, the external side of the upper part of the shaft sleeve body and the external side of the lower part of the shaft sleeve body are all fixedly connected with the inner side of the upper part of the lower joint via threaded connection; the external side of the upper part of the upper joint is provided with an external ring bench; and the upper cylinder sleeve sleeving the shaft sleeve body, the lower cylinder sleeve crushing and expanding the rubber sleeve packing device and the rubber sleeve packing device are orderly arranged under the external ring bench and over the upper joint from up to bottom. The double-staged cylinder sleeve packer is rationally structured with compactness; with jointed bearing by double-staged cylinder sleeve, a bearing area of an internal ring bench is larger than a common packer, so the shearing pin is ensured to be cut off when high pressure fluid reaches to rated pressure; and packing stability is enhanced.
Description
Technical field
the utility model relates to packing device technical field in oil gas field completion practice, is a kind of twin-stage cylinder sleeve packer.
Background technology
completion practice is the important technical that is connected drilling well and oil producing operation, and meanwhile, completion is again the great underground work of risk, and therefore, the success or not of completion practice, will directly cause the success or failure of a bite well.Particularly current, along with deepening continuously of shale gas, the unconventional exploration of oil and gas field of fine and close wet goods, people for the research of carrying out such Reservoir Development also in continuous reinforcement.For the exploitation of such oil-gas reservoir, carry out the pressure break completion technological means that is also absolutely necessary.No matter be the completion of conventional gas and oil Tibetan or the completion practice of unconventional oil/gas well, an indispensable technological means is exactly to utilize packer to carry out the isolation operation of shaft bottom reservoir.In conventional gas and oil is hidden, utilize packer to carry out the sealing between annular space sealing, bore hole reservoir and the tubing string in sleeve pipe; In unconventional oil-gas reservoir completion practice, also need to utilize packer to carry out the isolation between the interior annular space sealing of sleeve pipe and different reservoir, therefore, packer is requisite technological means in completion practice, the importance of packer has some idea of.At present, the packer that Oil Field uses, adopts single-stage fluid cylinder to set mostly, because the bearing area of its fluid cylinder inside is little, cause often occurring suppressing overrate and but still cannot cut off the phenomenon of pin, thereby affect subsequent operation, cannot complete set completion practice.
Summary of the invention
the utility model provides one, overcome the deficiency of above-mentioned prior art, its inner bearing area of fluid cylinder that can effectively solve existing packer existence is little, be prone to the phenomenon of suppressing overrate and but still cannot cutting off pin, thereby affect subsequent operation, cannot complete the problem of set completion practice.
the technical solution of the utility model realizes by following measures: a kind of twin-stage cylinder sleeve packer, comprises top connection, axle sleeve body, shear pin, upper cylinder sleeve, sealing drum, lower cylinder sleeve, retaining ring, packing element packing device and lower contact; The lower outside of the upper outside of the lower inside of top connection and axle sleeve body and axle sleeve body and the upper inner of lower contact are all threaded connection and are fixedly installed togather; The upper outside of top connection has outer shroud platform, below outer shroud platform and between above lower contact, be from top to bottom provided be successively sleeved on axle sleeve body outside upper cylinder sleeve, can push packing element packing device and make lower cylinder sleeve and the packing element packing device of its expansion; The upper inner of upper cylinder sleeve is sleeved on the lower outside of top connection and is fixedly installed togather by shear pin, and the upper cylinder sleeve inner side of corresponding top connection lower position is fixed with upper inner ring platform; Between corresponding top connection lower end and upper inner ring platform, on the axle sleeve body of position, circumferentially there is at least one through hole that builds the pressure; The inner side, lower end of upper inner ring platform is fixed with the upper connecting ring platform that is positioned at axle sleeve body outside, and the outside of the upper inner of lower cylinder sleeve and upper connecting ring platform is fixedly installed togather, and in correspondence, the lower cylinder sleeve inner side of connecting ring platform lower position is fixed with lower inner ring platform; Between upper connecting ring platform and axle sleeve body, be set with sealing drum, in correspondence between connecting ring platform lower end and lower inner ring platform upper end the lower outside of the sealing drum of position be fixed with can with the upper sealing ring platform of lower cylinder sleeve inner seal; Between the upper end of sealing drum and the lower end of top connection, between the inner side of sealing drum and axle sleeve body outside and all gapped between the lower end of sealing drum and the upper end of lower inner ring platform; Between lower inner ring platform and axle sleeve body, be provided with the retaining ring that can prevent that lower inner ring platform from moving up; Internal thread or external screw thread are arranged respectively at the top of top connection and the bottom of lower contact.
the further optimization and/or improvements to above-mentioned utility model technical scheme below:
the inner side of the outside of above-mentioned retaining ring and lower inner ring platform can be fixedly installed togather by screw thread, and the inner side of retaining ring is distributed with retaining pawl, and the axle sleeve body outside of corresponding retaining pawl travel position is distributed with the axle sleeve pawl matching with retaining pawl; In correspondence, between cylinder sleeve bottom and upper sealing ring platform, the lower cylinder sleeve sidewall of position is provided with discharge opeing through hole; Between lower cylinder sleeve and packing element packing device, be provided with the seat cover that is sleeved on axle sleeve body outside, the upper outside of seat cover and the lower inside of lower cylinder sleeve are threaded connection and are fixedly installed togather, the seat cover inner side of corresponding axle sleeve pawl lower position is fixed with the lower sealing ring platform that is sleeved on axle sleeve body outside, the axle sleeve body outside of corresponding lower sealing ring platform lower position is fixed with axle sleeve ring platform, and between corresponding lower sealing ring platform and axle sleeve ring platform, the seat of position cover sidewall is provided with lower discharge opeing through hole.
the top connection inner side of above-mentioned corresponding axle sleeve body top position can be fixed with upper limit erection loop platform, and the lower end seat of upper limit erection loop platform is on axle sleeve body; The lower contact inner side of corresponding axle sleeve body lower position is fixed with lower limit erection loop platform, and the lower end seat of axle sleeve body is on lower limit erection loop platform; The seat cover outside of corresponding lower cylinder sleeve lower position is fixed with outer lug boss, and the lower end seat of lower cylinder sleeve is in outer lug boss; The lower contact upper inner limited location of respective shaft collar platform lower position is installed annular groove, and the lower end seat of axle sleeve ring platform is in limit mounting annular groove bottom.
above-mentioned packing element packing device can comprise upper limit parts, lower limit parts, cartridge, packing element support ring and sealing ring; The corresponding axle sleeve body outside of sitting position between cover below and lower contact top is set with upper limit parts, cartridge and lower limit parts from top to bottom successively; The lower outside of sitting cover has up big and down small upper extruding inversed taper platform, and the upper inner of upper limit parts has the up big and down small upper pressure-bearing reverse taper holes matching with upper extruding inversed taper platform, and upper extruding back taper pedestal is in upper pressure-bearing reverse taper holes; The upper outside of lower contact has up-small and down-big lower extruding frustum, and the lower inside of lower limit parts has the up-small and down-big lower pressure-bearing taper hole matching with lower extruding frustum, and lower pressure-bearing taper hole is positioned at the outside of lower extruding frustum; Inner side, cartridge middle part is provided with the packing element support ring that is sleeved on axle sleeve body outside, between the middle part of packing element support ring and axle sleeve body outside, is provided with sealing ring.
the top and bottom of above-mentioned cartridge can be fixed be respectively sleeved on axle sleeve body outside and external diameter be less than cartridge external diameter upper packing element snap ring and lower rubber cylinder snap ring; Upper limit parts comprise upper outer shroud and the upper inner ring that is sleeved on successively axle sleeve body outside from top to bottom and the upper baffle ring that is sleeved on packing element snap ring outside, the upper inner of upper outer shroud has upper pressure-bearing reverse taper holes, the outside, lower end of upper outer shroud is fixed with upper limit ring platform, be fixed with the upper limit Ka Tai between axle sleeve body and upper limit ring platform in the upper end of upper inner ring, the lower inside of upper inner ring and the upper outside of upper baffle ring are all taper type up-small and down-big and that match; Lower limit parts comprise lower baffle ring and the lower inner ring that is sleeved on successively axle sleeve body outside from top to bottom and the lower outer shroud that is sleeved on lower rubber cylinder snap ring outside, the lower inside of lower outer shroud has lower pressure-bearing taper hole, the outside, upper end of lower outer shroud is fixed with lower limit ring platform, be fixed with the lower limit Ka Tai between axle sleeve body and lower limit ring platform in the lower end of lower inner ring, the upper inner of lower inner ring and the lower outside of lower baffle ring be the big up and small down and inversed taper platform shape of matching all.
between the upper outside of above-mentioned axle sleeve body and the inner side of top connection, between the lower outside of top connection and the inner side of upper cylinder sleeve, between upper inner ring platform inner side and sealing drum outside, between upper sealing ring platform outside and lower cylinder sleeve inner side, between lower sealing ring platform inner side and axle sleeve body outside, seat overlap inside upper outside and lower cylinder sleeve between and between the lower outside of axle sleeve body and the inner side of lower contact, all can be provided with sealing ring.
the utility model reasonable and compact in structure, easy to use, it adopts the common pressure-bearing of twin-stage cylinder sleeve, can make the bearing area of interior ring platform be greater than conventional packer, thereby guarantee that shear pin can cut off in the time that high-pressure fluid reaches rated pressure, strengthen the stability of its packing effect, be convenient to completing smoothly of subsequent operation and completion practice; Can effectively prevent the up of cylinder sleeve by cooperatively interacting of retaining pawl and axle sleeve pawl, thereby guarantee the lasting setting of cartridge; By setting up discharge opeing through hole, can guarantee that upper cylinder sleeve and lower cylinder sleeve can be descending smoothly.
Accompanying drawing explanation
the master that accompanying drawing 1 is the utility model most preferred embodiment looks half section structural representation.
coding in accompanying drawing is respectively: 1 is top connection, 2 is axle sleeve body, 3 is shear pin, 4 is upper cylinder sleeve, 5 is sealing drum, 6 is lower cylinder sleeve, 7 is retaining ring, 8 is lower contact, 9 is outer shroud platform, 10 is upper inner ring platform, 11 is the through hole that builds the pressure, 12 is upper connecting ring platform, 13 is lower inner ring platform, 14 is upper sealing ring platform, 15 is upper discharge opeing through hole, 16 for sitting cover, 17 is lower sealing ring platform, 18 is axle sleeve ring platform, 19 is lower discharge opeing through hole, 20 is upper limit erection loop platform, 21 is lower limit erection loop platform, 22 is outer lug boss, 23 is cartridge, 24 is packing element support ring, 25 is sealing ring, 26 is upper extruding inversed taper platform, 27 is lower extruding frustum, 28 is upper packing element snap ring, 29 is lower rubber cylinder snap ring, 30 is upper outer shroud, 31 is upper inner ring, 32 is upper baffle ring, 33 is upper limit ring platform, 34 is upper limit Ka Tai, 35 is lower baffle ring, 36 is lower inner ring, 37 is lower outer shroud, 38 is lower limit ring platform, 39 is lower limit Ka Tai.
The specific embodiment
the utility model is not subject to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is to be all described according to the Butut mode of Figure of description 1, as: the position relationship of forward and backward, upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in Figure 1, this twin-stage cylinder sleeve packer comprises top connection 1, axle sleeve body 2, shear pin 3, upper cylinder sleeve 4, sealing drum 5, lower cylinder sleeve 6, retaining ring 7, packing element packing device and lower contact 8; The upper inner of the lower outside of the upper outside of the lower inside of top connection 1 and axle sleeve body 2 and axle sleeve body 2 and lower contact 8 is all threaded connection and is fixedly installed togather; The upper outside of top connection 1 has outer shroud platform 9, below outer shroud platform 9 and between above lower contact 8, be from top to bottom provided be successively sleeved on axle sleeve body 2 outsides upper cylinder sleeve 4, can push packing element packing device and make lower cylinder sleeve 6 and the packing element packing device of its expansion; The upper inner of upper cylinder sleeve 4 is sleeved on the lower outside of top connection 1 and is fixedly installed togather by shear pin 3, and upper cylinder sleeve 4 inner sides of corresponding top connection 1 lower position are fixed with upper inner ring platform 10; Between corresponding top connection 1 lower end and upper inner ring platform 10, on the axle sleeve body 2 of position, circumferentially there is at least one through hole 11 that builds the pressure; The inner side, lower end of upper inner ring platform 10 is fixed with the upper connecting ring platform 12 that is positioned at axle sleeve body 2 outsides, the outside of the upper inner of lower cylinder sleeve 6 and upper connecting ring platform 12 is fixedly installed togather, and in correspondence, lower cylinder sleeve 6 inner sides of connecting ring platform 12 lower positions are fixed with lower inner ring platform 13; Between upper connecting ring platform 12 and axle sleeve body 2, be set with sealing drum 5, in correspondence between connecting ring platform 12 lower ends and lower inner ring platform 13 upper ends the lower outside of the sealing drum 5 of position be fixed with can with the upper sealing ring platform 14 of lower cylinder sleeve 6 inner seals; Between the lower end of the upper end of sealing drum 5 and top connection 1, between the inner side of sealing drum 5 and axle sleeve body 2 outsides and all gapped between the lower end of sealing drum 5 and the upper end of lower inner ring platform 13; Between lower inner ring platform 13 and axle sleeve body 2, be provided with the retaining ring 7 that can prevent that lower inner ring platform 13 from moving up; Internal thread or external screw thread are arranged respectively at the bottom of the top of top connection 1 and lower contact 8.In use, high-pressure fluid injects from the inside of top connection 1, entering behind axle sleeve body 2 inside and will flow into respectively in the cavity between top connection 1 and upper inner ring platform 10 and between sealing drum 5 and lower inner ring platform 13 by the gap building the pressure between through hole 11 and sealing drum 5 and each workpiece, thereby act on respectively the upper surface of upper inner ring platform 10 and lower inner ring platform 13; Because lower cylinder sleeve 6 adopts and is fixedly connected with upper cylinder sleeve 4, the pressure that bear the upper surface of upper inner ring platform 10 and lower inner ring platform 13 by acting in conjunction on shear pin 3; In the time that pressure increases to the shear strength of shear pin 3, will cut off shear pin 3, now, lower cylinder sleeve 6 and upper cylinder sleeve 4 are by descending under to the effect of upper inner ring platform 10 and lower inner ring platform 13 at high-pressure fluid, thus extruding packing element packing device is realized packing effect; Realizing after packing, retaining ring 7 can spacing lower cylinder sleeve 6 and upper cylinder sleeve 4 up, thereby guarantees to continue setting.In this process, it adopts the common pressure-bearing of twin-stage cylinder sleeve, can make the bearing area of upper inner ring platform 10 and lower inner ring platform 13 be greater than conventional packer, thereby guarantee that shear pin 3 can cut off in the time that high-pressure fluid reaches rated pressure, strengthen the stability of its packing effect, be convenient to completing smoothly of subsequent operation and completion practice.
can according to actual needs, above-mentioned twin-stage cylinder sleeve packer be made further optimization and/or improvements:
as shown in Figure 1, the inner side of the outside of retaining ring 7 and lower inner ring platform 13 is fixedly installed togather by screw thread, the inner side of retaining ring 7 is distributed with retaining pawl, and axle sleeve body 2 outsides of corresponding retaining pawl travel position are distributed with the axle sleeve pawl matching with retaining pawl; In correspondence, between cylinder sleeve 4 bottoms and upper sealing ring platform 14, lower cylinder sleeve 6 sidewalls of position are provided with discharge opeing through hole 15; Between lower cylinder sleeve 6 and packing element packing device, be provided with the seat cover 16 that is sleeved on axle sleeve body 2 outsides, the upper outside of seat cover 16 and the lower inside of lower cylinder sleeve 6 are threaded connection and are fixedly installed togather, the seat of corresponding axle sleeve pawl lower position overlaps 16 inner sides and is fixed with the lower sealing ring platform 17 that is sleeved on axle sleeve body 2 outsides, axle sleeve body 2 outsides of corresponding lower sealing ring platform 17 lower positions are fixed with axle sleeve ring platform 18, and between corresponding lower sealing ring platform 17 and axle sleeve ring platform 18, the seat of position overlaps 16 sidewalls and is provided with lower discharge opeing through hole 19.Can effectively prevent the up of cylinder sleeve by cooperatively interacting of retaining pawl and axle sleeve pawl, thereby guarantee the lasting setting of cartridge 23; By setting up discharge opeing through hole, can be convenient to discharge the pressure between cylinder sleeve 4 bottoms and upper sealing ring platform 14 and between lower sealing ring platform 17 and axle sleeve ring platform 18, guarantee that upper cylinder sleeve 4 and lower cylinder sleeve 6 can be descending smoothly.
as shown in Figure 1, top connection 1 inner side of corresponding axle sleeve body 2 top positions is fixed with upper limit erection loop platform 20, and the lower end seat of upper limit erection loop platform 20 is on axle sleeve body 2; Lower contact 8 inner sides of corresponding axle sleeve body 2 lower positions are fixed with lower limit erection loop platform 21, and the lower end seat of axle sleeve body 2 is on lower limit erection loop platform 21; The seat of corresponding lower cylinder sleeve 6 lower positions overlaps 16 outsides and is fixed with outer lug boss 22, and the lower end seat of lower cylinder sleeve 6 is in outer lug boss 22; The lower contact 8 upper inner limited locations of respective shaft collar platform 18 lower positions are installed annular groove, and the lower end seat of axle sleeve ring platform 18 is in limit mounting annular groove bottom.Can be convenient to like this its mounting limit each other.
as shown in Figure 1, packing element packing device comprises upper limit parts, lower limit parts, cartridge 23, packing element support ring 24 and sealing ring 25; Corresponding axle sleeve body 2 outsides of sitting position between cover 16 belows and lower contact 8 tops are set with upper limit parts, cartridge 23 and lower limit parts from top to bottom successively; Sitting cover 16 lower outside has up big and down small upper extruding inversed taper platform 26, and the upper inner of upper limit parts has the up big and down small upper pressure-bearing reverse taper holes matching with upper extruding inversed taper platform 26, and 26 of upper extruding inversed taper platforms are in upper pressure-bearing reverse taper holes; The upper outside of lower contact 8 has up-small and down-big lower extruding frustum 27, and the lower inside of lower limit parts has the up-small and down-big lower pressure-bearing taper hole matching with lower extruding frustum 27, and lower pressure-bearing taper hole is positioned at the outside of lower extruding frustum 27; Cartridge 23 inner sides, middle part are provided with the packing element support ring 24 that is sleeved on axle sleeve body 2 outsides, between the middle part of packing element support ring 24 and axle sleeve body 2 outsides, are provided with sealing ring 25.The upper extruding inversed taper platform 26 that employing cooperatively interacts and upper pressure-bearing reverse taper holes and lower extruding frustum 27 and lower pressure-bearing taper hole, can improve and sit the cover 16 descending stability that cartridge 23 is exerted pressure, and guarantees the smooth packing of cartridge 23.According to demand, cartridge 23 and packing element support ring 24 can be sulfided into one, can be convenient to like this install, and have good sealing effectiveness.
as shown in Figure 1, the top and bottom of cartridge 23 be fixed be respectively sleeved on axle sleeve body 2 outsides and external diameter be less than cartridge 23 external diameters upper packing element snap ring 28 and lower rubber cylinder snap ring 29; Upper limit parts comprise upper outer shroud 30 and the upper inner ring 31 that is sleeved on successively axle sleeve body 2 outsides from top to bottom and the upper baffle ring 32 that is sleeved on packing element snap ring 28 outsides, the upper inner of upper outer shroud 30 has upper pressure-bearing reverse taper holes, the outside, lower end of upper outer shroud 30 is fixed with upper limit ring platform 33, be fixed with the upper limit card platform 34 between axle sleeve body 2 and upper limit ring platform 33 in the upper end of upper inner ring 31, the upper outside of the lower inside of upper inner ring 31 and upper baffle ring 32 is all taper type up-small and down-big and that match; Lower limit parts comprise lower baffle ring 35 and the lower inner ring 36 that is sleeved on successively axle sleeve body 2 outsides from top to bottom and the lower outer shroud 37 that is sleeved on lower rubber cylinder snap ring 29 outsides, the lower inside of lower outer shroud 37 has lower pressure-bearing taper hole, the outside, upper end of lower outer shroud 37 is fixed with lower limit ring platform 38, be fixed with the lower limit card platform 39 between axle sleeve body 2 and lower limit ring platform 38 in the lower end of lower inner ring 36, the lower outside of the upper inner of lower inner ring 36 and lower baffle ring 35 is the big up and small down and inversed taper platform shape of matching all.Can form spacing to cartridge 23 by the interaction of baffle ring and packing element snap ring, be convenient to the crimp of cartridge 23, also can further improve the descending stability that cartridge 23 is exerted pressure of cylinder sleeve, make cartridge 23 there is good packing effect.
as shown in Figure 1, between the upper outside of axle sleeve body 2 and the inner side of top connection 1, between the lower outside of top connection 1 and the inner side of upper cylinder sleeve 4, between upper inner ring platform 10 inner sides and sealing drum 5 outsides, between upper sealing ring platform 14 outsides and lower cylinder sleeve 6 inner sides, between lower sealing ring platform 17 inner sides and axle sleeve body 2 outsides, sit between cover 16 upper outside and lower cylinder sleeve 6 inner sides and be equipped with sealing ring 25 between the lower outside of axle sleeve body 2 and the inner side of lower contact 8.
above technical characterictic has formed most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
Claims (8)
1. a twin-stage cylinder sleeve packer, is characterized in that comprising top connection, axle sleeve body, shear pin, upper cylinder sleeve, sealing drum, lower cylinder sleeve, retaining ring, packing element packing device and lower contact; The lower outside of the upper outside of the lower inside of top connection and axle sleeve body and axle sleeve body and the upper inner of lower contact are all threaded connection and are fixedly installed togather; The upper outside of top connection has outer shroud platform, below outer shroud platform and between above lower contact, be from top to bottom provided be successively sleeved on axle sleeve body outside upper cylinder sleeve, can push packing element packing device and make lower cylinder sleeve and the packing element packing device of its expansion; The upper inner of upper cylinder sleeve is sleeved on the lower outside of top connection and is fixedly installed togather by shear pin, and the upper cylinder sleeve inner side of corresponding top connection lower position is fixed with upper inner ring platform; Between corresponding top connection lower end and upper inner ring platform, on the axle sleeve body of position, circumferentially there is at least one through hole that builds the pressure; The inner side, lower end of upper inner ring platform is fixed with the upper connecting ring platform that is positioned at axle sleeve body outside, and the outside of the upper inner of lower cylinder sleeve and upper connecting ring platform is fixedly installed togather, and in correspondence, the lower cylinder sleeve inner side of connecting ring platform lower position is fixed with lower inner ring platform; Between upper connecting ring platform and axle sleeve body, be set with sealing drum, in correspondence between connecting ring platform lower end and lower inner ring platform upper end the lower outside of the sealing drum of position be fixed with can with the upper sealing ring platform of lower cylinder sleeve inner seal; Between the upper end of sealing drum and the lower end of top connection, between the inner side of sealing drum and axle sleeve body outside and all gapped between the lower end of sealing drum and the upper end of lower inner ring platform; Between lower inner ring platform and axle sleeve body, be provided with the retaining ring that can prevent that lower inner ring platform from moving up; Internal thread or external screw thread are arranged respectively at the top of top connection and the bottom of lower contact.
2. twin-stage cylinder sleeve packer according to claim 1, it is characterized in that the outside of retaining ring and the inner side of lower inner ring platform are fixedly installed togather by screw thread, the inner side of retaining ring is distributed with retaining pawl, and the axle sleeve body outside of corresponding retaining pawl travel position is distributed with the axle sleeve pawl matching with retaining pawl; In correspondence, between cylinder sleeve bottom and upper sealing ring platform, the lower cylinder sleeve sidewall of position is provided with discharge opeing through hole; Between lower cylinder sleeve and packing element packing device, be provided with the seat cover that is sleeved on axle sleeve body outside, the upper outside of seat cover and the lower inside of lower cylinder sleeve are threaded connection and are fixedly installed togather, the seat cover inner side of corresponding axle sleeve pawl lower position is fixed with the lower sealing ring platform that is sleeved on axle sleeve body outside, the axle sleeve body outside of corresponding lower sealing ring platform lower position is fixed with axle sleeve ring platform, and between corresponding lower sealing ring platform and axle sleeve ring platform, the seat of position cover sidewall is provided with lower discharge opeing through hole.
3. twin-stage cylinder sleeve packer according to claim 2, is characterized in that the top connection inner side of corresponding axle sleeve body top position is fixed with upper limit erection loop platform, and the lower end seat of upper limit erection loop platform is on axle sleeve body; The lower contact inner side of corresponding axle sleeve body lower position is fixed with lower limit erection loop platform, and the lower end seat of axle sleeve body is on lower limit erection loop platform; The seat cover outside of corresponding lower cylinder sleeve lower position is fixed with outer lug boss, and the lower end seat of lower cylinder sleeve is in outer lug boss; The lower contact upper inner limited location of respective shaft collar platform lower position is installed annular groove, and the lower end seat of axle sleeve ring platform is in limit mounting annular groove bottom.
4. according to the twin-stage cylinder sleeve packer described in claim 1 or 2 or 3, it is characterized in that packing element packing device comprises upper limit parts, lower limit parts, cartridge, packing element support ring and sealing ring; The corresponding axle sleeve body outside of sitting position between cover below and lower contact top is set with upper limit parts, cartridge and lower limit parts from top to bottom successively; The lower outside of sitting cover has up big and down small upper extruding inversed taper platform, and the upper inner of upper limit parts has the up big and down small upper pressure-bearing reverse taper holes matching with upper extruding inversed taper platform, and upper extruding back taper pedestal is in upper pressure-bearing reverse taper holes; The upper outside of lower contact has up-small and down-big lower extruding frustum, and the lower inside of lower limit parts has the up-small and down-big lower pressure-bearing taper hole matching with lower extruding frustum, and lower pressure-bearing taper hole is positioned at the outside of lower extruding frustum; Inner side, cartridge middle part is provided with the packing element support ring that is sleeved on axle sleeve body outside, between the middle part of packing element support ring and axle sleeve body outside, is provided with sealing ring.
5. twin-stage cylinder sleeve packer according to claim 4, the top and bottom that it is characterized in that cartridge be fixed be respectively sleeved on axle sleeve body outside and external diameter be less than cartridge external diameter upper packing element snap ring and lower rubber cylinder snap ring; Upper limit parts comprise upper outer shroud and the upper inner ring that is sleeved on successively axle sleeve body outside from top to bottom and the upper baffle ring that is sleeved on packing element snap ring outside, the upper inner of upper outer shroud has upper pressure-bearing reverse taper holes, the outside, lower end of upper outer shroud is fixed with upper limit ring platform, be fixed with the upper limit Ka Tai between axle sleeve body and upper limit ring platform in the upper end of upper inner ring, the lower inside of upper inner ring and the upper outside of upper baffle ring are all taper type up-small and down-big and that match; Lower limit parts comprise lower baffle ring and the lower inner ring that is sleeved on successively axle sleeve body outside from top to bottom and the lower outer shroud that is sleeved on lower rubber cylinder snap ring outside, the lower inside of lower outer shroud has lower pressure-bearing taper hole, the outside, upper end of lower outer shroud is fixed with lower limit ring platform, be fixed with the lower limit Ka Tai between axle sleeve body and lower limit ring platform in the lower end of lower inner ring, the upper inner of lower inner ring and the lower outside of lower baffle ring be the big up and small down and inversed taper platform shape of matching all.
6. according to the twin-stage cylinder sleeve packer described in claim 2 or 3, it is characterized in that between the upper outside of axle sleeve body and the inner side of top connection, between the lower outside of top connection and the inner side of upper cylinder sleeve, between upper inner ring platform inner side and sealing drum outside, between upper sealing ring platform outside and lower cylinder sleeve inner side, between lower sealing ring platform inner side and axle sleeve body outside, seat overlap inside upper outside and lower cylinder sleeve between and between the lower outside of axle sleeve body and the inner side of lower contact, be equipped with sealing ring.
7. twin-stage cylinder sleeve packer according to claim 4, it is characterized in that between the upper outside of axle sleeve body and the inner side of top connection, between the lower outside of top connection and the inner side of upper cylinder sleeve, between upper inner ring platform inner side and sealing drum outside, between upper sealing ring platform outside and lower cylinder sleeve inner side, between lower sealing ring platform inner side and axle sleeve body outside, seat overlap inside upper outside and lower cylinder sleeve between and between the lower outside of axle sleeve body and the inner side of lower contact, be equipped with sealing ring.
8. twin-stage cylinder sleeve packer according to claim 5, it is characterized in that between the upper outside of axle sleeve body and the inner side of top connection, between the lower outside of top connection and the inner side of upper cylinder sleeve, between upper inner ring platform inner side and sealing drum outside, between upper sealing ring platform outside and lower cylinder sleeve inner side, between lower sealing ring platform inner side and axle sleeve body outside, seat overlap inside upper outside and lower cylinder sleeve between and between the lower outside of axle sleeve body and the inner side of lower contact, be equipped with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320806418.2U CN203626707U (en) | 2013-12-10 | 2013-12-10 | Double-staged cylinder sleeve packer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320806418.2U CN203626707U (en) | 2013-12-10 | 2013-12-10 | Double-staged cylinder sleeve packer |
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| CN203626707U true CN203626707U (en) | 2014-06-04 |
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| CN201320806418.2U Expired - Fee Related CN203626707U (en) | 2013-12-10 | 2013-12-10 | Double-staged cylinder sleeve packer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587288A (en) * | 2016-03-14 | 2016-05-18 | 中国石油集团西部钻探工程有限公司 | Packer for double-hydraulic-cylinder fracture |
| CN107842337A (en) * | 2016-09-18 | 2018-03-27 | 中国石油化工股份有限公司 | Underground HTHP seal combination |
-
2013
- 2013-12-10 CN CN201320806418.2U patent/CN203626707U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587288A (en) * | 2016-03-14 | 2016-05-18 | 中国石油集团西部钻探工程有限公司 | Packer for double-hydraulic-cylinder fracture |
| CN105587288B (en) * | 2016-03-14 | 2018-03-06 | 中国石油集团西部钻探工程有限公司 | Biliquid cylinder pressure break packer |
| CN107842337A (en) * | 2016-09-18 | 2018-03-27 | 中国石油化工股份有限公司 | Underground HTHP seal combination |
| CN107842337B (en) * | 2016-09-18 | 2020-08-07 | 中国石油化工股份有限公司 | Underground high-temperature high-pressure sealing combination |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20140604 Termination date: 20201210 |