CN203515453U - Reliable packer - Google Patents
Reliable packer Download PDFInfo
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- CN203515453U CN203515453U CN201320575993.6U CN201320575993U CN203515453U CN 203515453 U CN203515453 U CN 203515453U CN 201320575993 U CN201320575993 U CN 201320575993U CN 203515453 U CN203515453 U CN 203515453U
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Abstract
The utility model relates to the technical field of packers used for oil and gas field well cementation and completion operation, and provides a reliable packer which comprises a shaft sleeve body, a spacer sleeve, a rubber barrel packer device, a sealing claw sleeve, a plunger barrel, a plunger shear pin, a sealing barrel, a rubber barrel shear pin and an unpacking preventing device. A barrel body outer boss is arranged on the outer side of the upper portion of the shaft barrel body, the spacer sleeve, and the rubber barrel packer device and the sealing claw sleeve are sequentially arranged on the outer side of the shaft barrel body which is located below the barrel body outer boss in a sleeved mode from top to bottom. Not less than two sealing claw pieces are distributed on the lower portion of the sealing claw sleeve in the circumferential direction at intervals. An inner claw block and an outer claw block are fixed on the inner side and the outer side of the lower portion of each sealing claw piece respectively. The reliable packer is reasonable and compact in structure, interference of the outside on a plunger barrel in the process that the reliable packer is downwards placed at a preset position can be effectively avoided, compressing of the plunger barrel on the outer claw blocks can be ensured, ascending of the sealing claw sleeve is effectively prevented, mistaken down sealing due to the ascending of the sealing claw sleeve is effectively avoided, good reliability is achieved, and negative effects on subsequent construction are avoided.
Description
Technical field
the utility model relates to the packer technology field that the solid completion practice of oil gas field is used, and is a kind of reliable 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 is used, is mostly hydraulic action packer from structural principle, and this meaning in the use of packer is all identical; Yet the on-the-spot hydraulic packer using effectively designs owing to the mistake of packer not being sat to hang, therefore, in work progress, it is larger that it occurs sitting the possibility of hanging by mistake, poor reliability at the scene; Once and the mistake that occurs packer in entering well process sit to be hung, it bring very big inconvenience will to follow-up completion practice, even the generation of the serious accident that this well cannot normal construction will be there will be.
Summary of the invention
the utility model provides a kind of reliable packer, has overcome the deficiency of above-mentioned prior art, and it can effectively solve that existing packer exists easily causes sitting extension, poor reliability by mistake, even cause the follow-up problem that cannot construct.
the technical solution of the utility model realizes by following measures: a kind of reliable packer, comprises beam barrel body, interstage sleeve, packing element packing device, jaw cover, plunger barrel, plunger shear pin, sealing drum, packing element shear pin and anti-deblocking device; The upper outside of beam barrel body has cylindrical shell outer lug boss, and the beam barrel body outside that is positioned at cylindrical shell outer lug boss below is set with interstage sleeve, packing element packing device and jaw cover from top to bottom successively; The lower circumference of jaw cover is intervally distributed with the sealing calvus that is no less than two, and lower inside and the outside of sealing calvus are fixed with respectively interior rest shoe and outer rest shoe, limited location annular groove outside the beam barrel body of rest shoe position in correspondence, and interior rest shoe is positioned at limited ring groove; The beam barrel body outside of corresponding outer rest shoe lower position is installed with plunger barrel by plunger shear pin, and the upper inner of plunger barrel has inner groove, and inner groove upper inner is pressed on the outside of outer rest shoe; Between corresponding outer rest shoe bottom and inner groove bottom, on the beam barrel body of position, circumferentially there is at least one through hole that builds the pressure; The outside of jaw cover is installed with the sealing drum that is sleeved on plunger barrel outside, the beam barrel body outside of corresponding plunger barrel lower position is installed with and is positioned at sealing drum lower inside and can stops jaw to overlap descending anti-deblocking device, between anti-deblocking device and sealing drum, is installed with packing element shear pin; The top and bottom of beam barrel body are respectively arranged with internal thread or external screw thread.
the further optimization and/or improvements to above-mentioned utility model technical scheme below:
above-mentioned anti-deblocking device can comprise pawl mandrel and pawl ring, the beam barrel body outside of corresponding plunger barrel lower position is installed with and is positioned at pawl mandrel, there is first ring platform in the outside, middle part of pawl mandrel, and there is the second ring platform in the pawl mandrel outside that is positioned at first ring platform below outer fix; The upper outside of pawl mandrel is set with seat in the pawl ring at first ring platform top, pawl ring set is contained in sealing drum inside and is fixedly installed togather by pin for suppressing metal with sealing drum, on the inwall of pawl ring, be distributed with retaining pawl, the pawl mandrel upper outside of moving travel position on corresponding pawl ring is provided with the mandrel pawl matching with retaining pawl; The base part seat of sealing drum is in the second Huan Tai top, and the lower inside of sealing drum and first ring platform outside are fixedly installed togather by packing element shear pin.
the build the pressure bottom inside of inner groove of through hole lower position of above-mentioned correspondence can be set with stationary half, and in correspondence, there is upper outer groove in the beam barrel body of stationary half position outside, and the inner side of upper stationary half is fixedly mounted in outer groove; The head base of pawl mandrel has lower stationary half, and the beam barrel body outside of corresponding lower stationary half position has lower outer groove, the inner side of lower stationary half to be arranged in lower outer groove; The pawl mandrel lower outside of corresponding the second ring platform lower position is installed with fixed cover, the lower inside of fixed cover is fixed with the ring platform that is sleeved on beam barrel body outside and is positioned at pawl mandrel below, between the top of the bottom of pawl mandrel and interior ring platform, be provided with location semi-ring, there is positioning ring groove in the beam barrel body outside of corresponding location half ring position, and the inner side of location semi-ring is arranged in positioning ring groove.
the outside, middle part of above-mentioned jaw cover and the upper inner of sealing drum can be threaded connection and be fixedly installed togather, and the jaw cover upper outside of corresponding sealing drum top position is fixed with seat in the limited ring dais at sealing drum top; Plunger shear pin is positioned at the bottom of plunger barrel, between the outside of jaw below the position that is threaded cover and the inwall of sealing drum, between between the inner side, middle part of jaw cover and beam barrel body outside and corresponding inner groove bottom and plunger shear pin outside the plunger barrel inner side of position and beam barrel body between and outside plunger barrel and between inside sealing drum, be provided with the sealing ring that builds the pressure.
above-mentioned packing element packing device can comprise that upper outside packing element, quantity are no less than interior packing element and the lower outside packing element of one; Upper outside packing element, interior packing element and lower outside packing element are sleeved on beam barrel body outside from top to bottom successively, and the inwall middle part of interior packing element is fixed with bracketing ring, has pushing out ring seal groove on the inwall of bracketing ring, and pushing out ring sealing ring is installed in pushing out ring seal groove.
according to demand, the quantity of interior packing element can be two.
the above-mentioned sheath that is sleeved on beam barrel body outside that all can be provided with at the bottom of the top of upper outside packing element upside and lower outside packing element downside; Between upper outside packing element and interior packing element, between adjacent interior packing element and be provided with the back-up ring that is sleeved on beam barrel body outside between interior packing element and lower outside packing element.
the outside, lower end of above-mentioned interstage sleeve can be fixed with outer lug boss, the outside, upper end of jaw cover is fixed with lower outer lug boss, in upper mounting groove on the sheath top at upper outside packing element top between upper outside boss and beam barrel body, in the lower mounting groove in the sheath bottom of lower outside packing element bottom between lower outer lug boss and beam barrel body.
the utility model reasonable and compact in structure; easy to use; it can form the position limitation protection to plunger barrel by sealing drum is set; thereby can effectively avoid the utility model in the interference effect power that is lowered to the process China and foreign countries bound pair plunger barrel in precalculated position; guarantee the pressuring action of its external rest shoe; thereby the mistake up and that therefore cause that effectively prevents jaw cover is sat and is hung, and has good reliability, thereby avoids follow-up construction to bring harmful effect.
Accompanying drawing explanation
accompanying drawing 1 is looked half section structural representation for the master of the utility model most preferred embodiment.
the amplification master that accompanying drawing 2 overlaps for jaw in accompanying drawing 1 looks half section structural representation.
coding in accompanying drawing is respectively: 1 is beam barrel body, 2 is interstage sleeve, 3 is jaw cover, 4 is plunger barrel, 5 is plunger shear pin, 6 is sealing drum, 7 is packing element shear pin, 8 is cylindrical shell outer lug boss, 9 is sealing calvus, 10 is interior rest shoe, 11 is outer rest shoe, 12 is limited ring groove, 13 is inner groove, 14 is the through hole that builds the pressure, 15 is pawl mandrel, 16 is pawl ring, 17 is first ring platform, 18 is the second ring platform, 19 is pin for suppressing metal, 20 is upper stationary half, 21 is lower stationary half, 22 is fixed cover, 23 is interior ring platform, 24 is location semi-ring, 25 is limited ring dais, 26 is the sealing ring that builds the pressure, 27 is upper outside packing element, 28 is interior packing element, 29 is lower outside packing element, 30 is bracketing ring, 31 is pushing out ring sealing ring, 32 is sheath, 33 is back-up ring, 34 is upper outer lug boss, 35 is lower outer lug boss.
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 accompanying drawing 1,2, this reliable packer comprises beam barrel body 1, interstage sleeve 2, packing element packing device, jaw cover 3, plunger barrel 4, plunger shear pin 5, sealing drum 6, packing element shear pin 7 and anti-deblocking device; The upper outside of beam barrel body 1 has cylindrical shell outer lug boss 8, and beam barrel body 1 outside that is positioned at cylindrical shell outer lug boss 8 belows is set with interstage sleeve 2, packing element packing device and jaw cover 3 from top to bottom successively; The lower circumference of jaw cover 3 is intervally distributed with the sealing calvus 9 that is no less than two, lower inside and the outside of sealing calvus 9 are fixed with respectively interior rest shoe 10 and outer rest shoe 11, the beam barrel body 1 outside limited location annular groove 12 of rest shoe 10 positions in corresponding, interior rest shoe 10 is positioned at limited ring groove 12; Beam barrel body 1 outside of corresponding outer rest shoe 11 lower positions is installed with plunger barrel 4 by plunger shear pin 5, and the upper inner of plunger barrel 4 has inner groove 13, and inner groove 13 upper inner are pressed on the outside of outer rest shoe 11; Between corresponding outer rest shoe 11 bottoms and inner groove 13 bottoms, on the beam barrel body 1 of position, circumferentially there is at least one through hole 14 that builds the pressure; The outside of jaw cover 3 is installed with the sealing drum 6 that is sleeved on plunger barrel 4 outsides, beam barrel body 1 outside of corresponding plunger barrel 4 lower positions is installed with and is positioned at sealing drum 6 lower inside and can stops jaw to overlap 3 descending anti-deblocking devices, between anti-deblocking device and sealing drum 6, is installed with packing element shear pin 7; The top and bottom of beam barrel body 1 are respectively arranged with internal thread or external screw thread.According to demand, the shear strength of plunger shear pin 5 should be lower than the shear strength of packing element shear pin 7.In use, between beam barrel body 1 outside, jaw cover 3, plunger barrel 4 and sealing drum 6 inner sides, form the chamber that builds the pressure, the utility model is lowered into behind well depth precalculated position according to design attitude, by the pitching operation that builds the pressure, make high-pressure fluid enter in the chamber that builds the pressure to form from the through hole 14 that builds the pressure to build the pressure, when pressure surpasses the shear strength of plunger shear pin 5, plunger shear pin 5 will be cut off, and plunger barrel 4 is descending, thereby unclamps pressing of its external rest shoe 11; When pressure continues to increase to while cutting off packing element shear pin 7, jaw cover 3 will drive sealing drum 6 up, thereby push packing element packing device, realize setting.In this process; sealing drum 6 has formed the position limitation protection to plunger barrel 4; can effectively avoid the utility model in the interference effect power that is lowered to the process China and foreign countries bound pair plunger barrel 4 in precalculated position; guarantee the pressuring action of its external rest shoe 11; thereby the mistake up and that therefore cause that effectively prevents jaw cover 3 is sat and is hung; there is good reliability, thereby avoid follow-up construction to bring harmful effect.
can according to actual needs, above-mentioned reliable packer be made further optimization and/or improvements:
as shown in accompanying drawing 1,2, anti-deblocking device comprises pawl mandrel 15 and pawl ring 16, beam barrel body 1 outside of corresponding plunger barrel 4 lower positions is installed with and is positioned at pawl mandrel 15, there is first ring platform 17 in the outside, middle part of pawl mandrel 15, and there is the second ring platform 18 in pawl mandrel 15 outsides that are positioned at first ring platform 17 below outer fixs; The upper outside of pawl mandrel 15 is set with seat in the pawl ring 16 at first ring platform 17 tops, pawl ring 16 is sleeved on sealing drum 6 inside and is fixedly installed togather by pin for suppressing metal 19 with sealing drum 6, on the inwall of pawl ring 16, be distributed with retaining pawl, pawl mandrel 15 upper outside of moving travel position on corresponding pawl ring 16 are provided with the mandrel pawl matching with retaining pawl; The base part seat of sealing drum 6 is in the second ring platform 18 tops, and the lower inside of sealing drum 6 and first ring platform 17 outsides are fixedly installed togather by packing element shear pin 7.Being used in conjunction with of retaining pawl and cylinder core pawl, can guarantee that sealing drum 6 and jaw cover 3 are not subject to the interference of other external force in well and descending, guarantees that it can continue after pin is cut off packing setting.
as shown in Figure 1, the build the pressure bottom inside of inner groove 13 of through hole 14 lower positions of correspondence is set with stationary half 20, and in correspondence, there is upper outer groove in beam barrel body 1 outside of stationary half 20 positions, and the inner side of upper stationary half 20 is fixedly mounted in outer groove; The head base of pawl mandrel 15 has lower stationary half 21, and there is lower outer groove in beam barrel body 1 outside of corresponding lower stationary half 21 positions, and the inner side of lower stationary half 21 is arranged in lower outer groove; Pawl mandrel 15 lower outsides of corresponding the second ring platform 18 lower positions are installed with fixed cover 22, the lower inside of fixed cover 22 is fixed with the ring platform 23 that is sleeved on beam barrel body 1 outside and is positioned at pawl mandrel 15 belows, between the top of the bottom of pawl mandrel 15 and interior ring platform 23, be provided with location semi-ring 24, there is positioning ring groove in beam barrel body 1 outside of semi-ring 24 positions, corresponding location, and the inner side of location semi-ring 24 is arranged in positioning ring groove.Upper stationary half 20 and lower stationary half 21 can realize the stroke limit to plunger barrel 4, and lower stationary half 21 and location semi-ring 24 can be realized spacing to pawl mandrel 15, and location semi-ring 24 also can be realized spacing to fixed cover 22.
as shown in accompanying drawing 1,2, the outside, middle part of jaw cover 3 and the upper inner of sealing drum 6 are threaded connection and are fixedly installed togather, and the jaw of corresponding sealing drum 6 top positions is overlapped 3 upper outside and is fixed with seat in the limited ring dais 25 at sealing drum 6 tops; Plunger shear pin 5 is positioned at the bottom of plunger barrel 4, between the outside of jaw below the position that is threaded cover 3 and the inwall of sealing drum 6, inside the middle part of jaw cover 3 with beam barrel body 1 outside between and between corresponding inner groove 13 bottoms and plunger shear pin 5 between plunger barrel 4 inner sides of position and beam barrel body 1 outside and be provided with the sealing ring 26 that builds the pressure between plunger barrel 4 outsides and sealing drum 6 inner sides.
as shown in Figure 1, packing element packing device comprises that upper outside packing element 27, quantity are no less than interior packing element 28 and the lower outside packing element 29 of one; Upper outside packing element 27, interior packing element 28 and lower outside packing element 29 are sleeved on beam barrel body 1 outside from top to bottom successively, and the inwall middle part of interior packing element 28 is fixed with bracketing ring 30, has pushing out ring seal groove on the inwall of bracketing ring 30, and pushing out ring sealing ring 31 is installed in pushing out ring seal groove.Bracketing ring 30 and pushing out ring sealing ring 31 can make packing element packing device in the situation that meeting high pressure packing, still guarantee the ability of low pressure packing; Being used in conjunction with of long and short packing element can solve its packing scarce capacity, easily alter the problems such as layer, makes it have good setting effect.
according to demand, the quantity of interior packing element 28 is two.
as shown in Figure 1, the bottom downside at the top of upper outside packing element 27 upside and lower outside packing element 29 is provided with the sheath 32 that is sleeved on beam barrel body 1 outside; Between upper outside packing element 27 and interior packing element 28, between adjacent interior packing element 28 and be provided with the back-up ring 33 that is sleeved on beam barrel body 1 outside between interior packing element 28 and lower outside packing element 29.Packing element is when being squeezed, and sheath 32 and back-up ring 33 can avoid it to occur wavy distortion.
as shown in accompanying drawing 1,2, the outside, lower end of interstage sleeve 2 is fixed with outer lug boss 34, the outside, upper end of jaw cover 3 is fixed with lower outer lug boss 35, in upper mounting groove on sheath 32 tops at upper outside packing element 27 tops between upper outside boss 34 and beam barrel body 1, in the lower mounting groove in sheath 32 bottoms of lower outside packing element 29 bottoms between lower outer lug boss 35 and beam barrel body 1.
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 (10)
1. a reliable packer, is characterized in that comprising beam barrel body, interstage sleeve, packing element packing device, jaw cover, plunger barrel, plunger shear pin, sealing drum, packing element shear pin and anti-deblocking device; The upper outside of beam barrel body has cylindrical shell outer lug boss, and the beam barrel body outside that is positioned at cylindrical shell outer lug boss below is set with interstage sleeve, packing element packing device and jaw cover from top to bottom successively; The lower circumference of jaw cover is intervally distributed with the sealing calvus that is no less than two, and lower inside and the outside of sealing calvus are fixed with respectively interior rest shoe and outer rest shoe, limited location annular groove outside the beam barrel body of rest shoe position in correspondence, and interior rest shoe is positioned at limited ring groove; The beam barrel body outside of corresponding outer rest shoe lower position is installed with plunger barrel by plunger shear pin, and the upper inner of plunger barrel has inner groove, and inner groove upper inner is pressed on the outside of outer rest shoe; Between corresponding outer rest shoe bottom and inner groove bottom, on the beam barrel body of position, circumferentially there is at least one through hole that builds the pressure; The outside of jaw cover is installed with the sealing drum that is sleeved on plunger barrel outside, the beam barrel body outside of corresponding plunger barrel lower position is installed with and is positioned at sealing drum lower inside and can stops jaw to overlap descending anti-deblocking device, between anti-deblocking device and sealing drum, is installed with packing element shear pin; The top and bottom of beam barrel body are respectively arranged with internal thread or external screw thread.
2. reliable packer according to claim 1, it is characterized in that anti-deblocking device comprises pawl mandrel and pawl ring, the beam barrel body outside of corresponding plunger barrel lower position is installed with and is positioned at pawl mandrel, there is first ring platform in the outside, middle part of pawl mandrel, and there is the second ring platform in the pawl mandrel outside that is positioned at first ring platform below outer fix; The upper outside of pawl mandrel is set with seat in the pawl ring at first ring platform top, pawl ring set is contained in sealing drum inside and is fixedly installed togather by pin for suppressing metal with sealing drum, on the inwall of pawl ring, be distributed with retaining pawl, the pawl mandrel upper outside of moving travel position on corresponding pawl ring is provided with the mandrel pawl matching with retaining pawl; The base part seat of sealing drum is in the second Huan Tai top, and the lower inside of sealing drum and first ring platform outside are fixedly installed togather by packing element shear pin.
3. reliable packer according to claim 2, it is characterized in that the build the pressure bottom inside of inner groove of through hole lower position of correspondence is set with stationary half, in correspondence, there is upper outer groove in the beam barrel body of stationary half position outside, and the inner side of upper stationary half is fixedly mounted in outer groove; The head base of pawl mandrel has lower stationary half, and the beam barrel body outside of corresponding lower stationary half position has lower outer groove, the inner side of lower stationary half to be arranged in lower outer groove; The pawl mandrel lower outside of corresponding the second ring platform lower position is installed with fixed cover, the lower inside of fixed cover is fixed with the ring platform that is sleeved on beam barrel body outside and is positioned at pawl mandrel below, between the top of the bottom of pawl mandrel and interior ring platform, be provided with location semi-ring, there is positioning ring groove in the beam barrel body outside of corresponding location half ring position, and the inner side of location semi-ring is arranged in positioning ring groove.
4. reliable packer according to claim 3, it is characterized in that the outside, middle part of jaw cover and the upper inner of sealing drum are threaded connection is fixedly installed togather, and the jaw cover upper outside of corresponding sealing drum top position is fixed with in the limited ring dais at sealing drum top; Plunger shear pin is positioned at the bottom of plunger barrel, between the outside of jaw below the position that is threaded cover and the inwall of sealing drum, between between the inner side, middle part of jaw cover and beam barrel body outside and corresponding inner groove bottom and plunger shear pin outside the plunger barrel inner side of position and beam barrel body between and outside plunger barrel and between inside sealing drum, be provided with the sealing ring that builds the pressure.
5. according to the reliable packer described in claim 1 or 2 or 3 or 4, it is characterized in that packing element packing device comprises that upper outside packing element, quantity are no less than interior packing element and the lower outside packing element of one; Upper outside packing element, interior packing element and lower outside packing element are sleeved on beam barrel body outside from top to bottom successively, and the inwall middle part of interior packing element is fixed with bracketing ring, has pushing out ring seal groove on the inwall of bracketing ring, and pushing out ring sealing ring is installed in pushing out ring seal groove.
6. reliable packer according to claim 5, the quantity that it is characterized in that interior packing element is two.
7. reliable packer according to claim 5, is characterized in that being provided with at the bottom of the top of upper outside packing element upside and lower outside packing element downside the sheath that is sleeved on beam barrel body outside; Between upper outside packing element and interior packing element, between adjacent interior packing element and be provided with the back-up ring that is sleeved on beam barrel body outside between interior packing element and lower outside packing element.
8. reliable packer according to claim 6, is characterized in that being provided with at the bottom of the top of upper outside packing element upside and lower outside packing element downside the sheath that is sleeved on beam barrel body outside; Between upper outside packing element and interior packing element, between adjacent interior packing element and be provided with the back-up ring that is sleeved on beam barrel body outside between interior packing element and lower outside packing element.
9. reliable packer according to claim 7, the outside, lower end that it is characterized in that interstage sleeve is fixed with outer lug boss, the outside, upper end of jaw cover is fixed with lower outer lug boss, in upper mounting groove on the sheath top at upper outside packing element top between upper outside boss and beam barrel body, in the lower mounting groove in the sheath bottom of lower outside packing element bottom between lower outer lug boss and beam barrel body.
10. reliable packer according to claim 8, the outside, lower end that it is characterized in that interstage sleeve is fixed with outer lug boss, the outside, upper end of jaw cover is fixed with lower outer lug boss, in upper mounting groove on the sheath top at upper outside packing element top between upper outside boss and beam barrel body, in the lower mounting groove in the sheath bottom of lower outside packing element bottom between lower outer lug boss and beam barrel body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320575993.6U CN203515453U (en) | 2013-09-17 | 2013-09-17 | Reliable packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320575993.6U CN203515453U (en) | 2013-09-17 | 2013-09-17 | Reliable packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203515453U true CN203515453U (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320575993.6U Withdrawn - After Issue CN203515453U (en) | 2013-09-17 | 2013-09-17 | Reliable packer |
Country Status (1)
| Country | Link |
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| CN (1) | CN203515453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470209A (en) * | 2013-09-17 | 2013-12-25 | 中国石油集团西部钻探工程有限公司 | Reliable packer |
-
2013
- 2013-09-17 CN CN201320575993.6U patent/CN203515453U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470209A (en) * | 2013-09-17 | 2013-12-25 | 中国石油集团西部钻探工程有限公司 | Reliable packer |
| CN103470209B (en) * | 2013-09-17 | 2016-04-06 | 中国石油集团西部钻探工程有限公司 | Reliable packer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140402 Effective date of abandoning: 20160406 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |