CN206290237U - A kind of packer - Google Patents
A kind of packer Download PDFInfo
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- CN206290237U CN206290237U CN201621232276.3U CN201621232276U CN206290237U CN 206290237 U CN206290237 U CN 206290237U CN 201621232276 U CN201621232276 U CN 201621232276U CN 206290237 U CN206290237 U CN 206290237U
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- packer
- closing piece
- grappling
- overcoat
- slips
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Abstract
A kind of packer, including packer body are disclosed herein；Packer body is provided with main oil pipe communicating passage, liquid controling pipe line hydraulic channel through packer body two ends, and the external cylindrical surface of packer body is provided with the first intercommunicating pore, the second intercommunicating pore for connecting liquid controling pipe line hydraulic channel for connecting main oil pipe communicating passage；Tapered sleeve under slips is arranged with the outside of packer body, it is connected by closing piece between tapered sleeve and packer body under slips, the outside of closing piece is also arranged with the grappling overcoat for limiting closing piece movement, driven cavity is constituted between grappling overcoat and packer body, the first intercommunicating pore, the second intercommunicating pore connect driven cavity；The application relates to, but are not limited to packer technology, and technological deficiency present in prior art can be effectively overcome using the application, can effectively improve packer bear push ability, while can also realize the dual deblocking mode of operation that packer is unsealed completely.
Description
Technical field
The application relates to, but are not limited to packer technology, especially a kind of packer.
Background technology
At present, the instrument of domestic and international oil gas field packing oil jacket annular space largely uses all kinds of packers.Removing seal for packer side
Formula is divided into upper lifting pipe post, rotation tubing string, hydraulic pressure and lower unsealing tool, and occurs for upper lifting pipe post deblocking or easily what is unsealed in advance
Packer, when bearing to push after packer completes to set, stress is all born by shear pin or shearing ring, so packer
Bear to push ability poor, easily unseal in advance, and cause packer premature failure, cause larger economic loss.
Wherein, existing above carrying desealed or the packer for unsealing in advance easily occur without waterpower anchor structure, because without water
Power anchor mechanism, packer bear to push it is very small, during construction operation must packer bottom increase hang weight, if pushed too
If big, increasing extension weight can not meet requirement, and packer is easily unsealed in advance.
Meanwhile, existing above carrying desealed or the packer for unsealing in advance easily occur with waterpower anchor structure, though possess band water
Power anchor mechanism, packer possess it is certain bear to push cannot still meet requirement, packer under ability, but high pressure conditions
Can unseal in advance.
The packer of above two structure all using above putting forward deblocking mode, when packer bears to push, stress all by
Deblocking pin bears, thus packer to bear to push ability poor, easily unseal in advance.Therefore, there is the country to know completely for research and development
Know the packer of property right prevent from solving in advance seal structure design be urgent need to resolve at this stage technological difficulties, it is therefore necessary to existing
Having technology carries out innovation research.
Utility model content
The technical problem that the application is solved is to provide a kind of packer, can effectively overcome skill present in prior art
Art defect, can effectively improve packer bear push ability, while can also realize the dual solution that packer is unsealed completely
Envelope mode of operation.
In order to solve the above technical problems, this application provides a kind of packer, including packer body；The packer sheet
Body is provided with main oil pipe communicating passage, liquid controling pipe line hydraulic channel through packer body two ends, outside the packer body
The face of cylinder be provided with for connect main oil pipe communicating passage the first intercommunicating pore, for connect liquid controling pipe line hydraulic channel second
Intercommunicating pore；
Tapered sleeve under slips is arranged with the outside of the packer body, is led between tapered sleeve and packer body under the slips
Cross closing piece to be connected, the outside of the closing piece is also arranged with the grappling overcoat for limiting closing piece movement, the grappling overcoat
Driven cavity is constituted between packer body, first intercommunicating pore, the second intercommunicating pore connect driven cavity；
Combination sealing is provided with the driven cavity and segmentation covers, the side wall of the segmentation set is provided with and extends radially through hole,
The segmentation is set between combination sealing and the bottom of driven cavity.
When the packer body is unsealed, pressurizeed by liquid controling pipe line hydraulic channel, and pressure is passed through into the second intercommunicating pore
Driven cavity is transferred to, is limited with driving grappling overcoat to move down and releasing closing piece；Or, pressurizeed by main oil pipe communicating passage,
And pressure is transferred to driven cavity by the first intercommunicating pore, limited with driving grappling overcoat to move down and releasing closing piece.
Above-mentioned packer, can also have following features,
The external cylindrical surface of tapered sleeve is evenly distributed and offers multiple closing piece mounting holes under the slips, the packer body
Relevant position be provided with multiple closing piece mounting grooves, the closing piece runs through closing piece mounting hole, and the closing piece end insertion closing piece
In mounting groove.
Above-mentioned packer, can also have following features,
The first shear pin is provided with the slips between tapered sleeve and packer body, the external cylindrical surface of tapered sleeve under the slips
It is evenly distributed and offers multiple first shear pin holes, the relevant position of the packer body is provided with multiple first shear pin grooves；Institute
State in one end first shear pin hole of insertion of the first shear pin, the other end is inserted in the first shear pin groove.
Above-mentioned packer, can also have following features,
The second shear pin is provided with the slips between tapered sleeve and grappling overcoat, the external cylindrical surface of tapered sleeve under the slips
It is evenly distributed and offers multiple second shear pin holes, the relevant position of the grappling overcoat is provided with multiple second shear pin grooves；It is described
One end of second shear pin is inserted in the second shear pin hole, and the other end is inserted in the second shear pin groove.
Above-mentioned packer, can also have following features,
The outer surface of the grappling overcoat is provided with first shoulder, and stop collar is arranged with the outside of the grappling overcoat；It is described
One end of stop collar is connected with tapered sleeve under slips, and the inner surface of the other end is provided with spacing shoulder, the spacing shoulder and First
The cooperation of shoulder is used to realize the position-limiting action of first shoulder.
Above-mentioned packer, can also have following features,
The inner surface of the grappling overcoat is provided with the second shoulder, and second shoulder is used to limit closing piece movement；
In grappling overcoat folding process, the second shoulder departs from current location and is displaced downwardly to closing piece lower section, the grappling overcoat
Release closing piece limitation.
Above-mentioned packer, can also have following features,
Under the slips under contact surface, the slips of tapered sleeve and grappling overcoat tapered sleeve and packer body contact surface, grappling
Overcoat is provided with sealing ring with the contact surface of packer body.
Above-mentioned packer, can also have following features,
The top of the liquid controling pipe line hydraulic channel is used to connect liquid controling pipe line, and bottom is used to install seal plug, described
Seal plug is used to block liquid controling pipe line hydraulic channel.
Above-mentioned packer, can also have following features,
The closing piece mounting groove is V-groove or deep-slotted chip breaker.
The application above-mentioned technical proposal has the advantages that：
The said structure that the utility model is provided, using high intensity closing piece mechanism, when pressure is arranged at packer bottom, owns
The upward power of packer that is applied to tapered sleeve under slips is passed to by closing piece, and be delivered on sleeve pipe, greatly enhance envelope
Bear to push ability every device；Said structure uses Redundancy Design, with dual unlocking structure, it is ensured that packer is unsealed completely；Together
When, mechanism structure composition is reasonable, and sealing stroke is short, possesses stroke limit structure, prevents grappling overcoat to be slipped to shaft bottom, also keeps away
Exempt from the connection of bottom annular space and annular space in oil pipe；Said mechanism uses the piston structure of combination sealing, sealing property reliability, pressure-bearing
Ability is high.
Other features and advantage will be illustrated in the following description, also, the partly change from specification
Obtain it is clear that or being understood by implementing the utility model embodiment.The purpose of the application and other advantages can by
Specifically noted structure is realized and obtained in specification, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing is used for providing further understanding technical scheme, and constitutes a part for specification, with this
The embodiment of application is used to explain together the technical scheme of the application, does not constitute the limitation to technical scheme.
Fig. 1 is the superstructure schematic diagram of the utility model embodiment；
Fig. 2 is the substructure schematic diagram one of the utility model embodiment；
Fig. 3 is the substructure schematic diagram two of the utility model embodiment.
Specific embodiment
Embodiments herein is described in detail below in conjunction with accompanying drawing.It should be noted that not conflicting
In the case of, the feature in embodiment and embodiment in the application can mutually be combined.
With reference to shown in Fig. 1, Fig. 2, Fig. 3, wherein, Fig. 1 and Fig. 2 collectively forms the section view for showing liquid controling pipe line hydraulic channel 20
Figure, Fig. 3 is the sectional view for showing main oil pipe communicating passage 30.
The utility model embodiment provides a kind of packer, including packer body 13；Wherein, packer body 13 sets
There are main oil pipe communicating passage 30, the liquid controling pipe line hydraulic channel 20 through the two ends of packer body 13, outside packer body 13
The face of cylinder be provided with for connect main oil pipe communicating passage 30 the first intercommunicating pore 31, for connecting liquid controling pipe line hydraulic channel 20
The second intercommunicating pore 22；The outside of packer body 13 is arranged with tapered sleeve 1 under slips, tapered sleeve 1 and packer body 13 under slips
Between be connected by closing piece 7, the outside of closing piece 7 is also arranged with the grappling overcoat 11 for limiting the movement of closing piece 7, outside grappling
Driven cavity is constituted between set 11 and packer body 13, the first intercommunicating pore 31, the second intercommunicating pore 22 connect driven cavity.
Wherein, driven cavity can include that the first cavity 32 connected with the first intercommunicating pore 31, the second intercommunicating pore 22 are connected
The second cavity 21, wherein, near the bottom of driven cavity, the second cavity 21 is near the top of driven cavity for the first cavity 32.
When packer body 13 is unsealed, pressurizeed by liquid controling pipe line hydraulic channel 20, and by pressure by the second intercommunicating pore 22, and pass through
Second cavity 21 is transferred to driven cavity, is limited with driving grappling overcoat 11 to move down and releasing closing piece 7；Or, by main oil pipe
Communicating passage 30 is pressurizeed, and by pressure by the first intercommunicating pore 31, and driven cavity is transferred to through the first cavity 32, to drive anchor
Determine overcoat 11 and move down and release closing piece 7 to limit.
In concrete operations, those skilled in the art can be by suppressing in main oil pipe communicating passage 30, and pressure connects through first
Through hole 31 is transferred to driven cavity, and then driving grappling overcoat 11 is moved down and releases closing piece 7 and limits, when closing piece 7 lifts restrictions, can
By the upward vertical pulling of packer body 13, and corresponding shear pin is cut, closing piece 7 departs from packer body 13, and tapered sleeve 1 is relative under slips
Descending in packer body 13, tapered sleeve 1 can be resetted under the action of the spring under slips, and so far removing seal for packer is completed；Accordingly,
Those skilled in the art, can also be pressurizeed by liquid controling pipe line hydraulic channel 20, and pressure is transmitted by the second intercommunicating pore 22
To driven cavity, limited with driving grappling overcoat 11 to move down and releasing closing piece 7, it is also possible to realize the unsealing operation of packer.Phase
Than the above-mentioned technical proposal provided in prior art, the application, the situation of packer from opening in advance can be avoided, can be by double
The Redundancy Design of operation is unlocked again, to ensure that packer is unsealed completely.
Preferably, the first shear pin 2 is provided with above-mentioned slips between tapered sleeve 1 and packer body 13, tapered sleeve 1 under slips
External cylindrical surface is evenly distributed and offers multiple first shear pin holes, and the relevant position of packer body 13 is provided with multiple first shear pins
Groove, above-mentioned first shear pin groove can also be the structure type in hole；One end of first shear pin 2 is inserted in the first shear pin hole, the other end
In inserting the first shear pin groove.In addition, the second shear pin 4, tapered sleeve 1 under slips are provided with slips between tapered sleeve 1 and grappling overcoat 11
External cylindrical surface be evenly distributed and offer multiple second shear pin holes, the relevant position of grappling overcoat 11 is provided with multiple second shear pins
Groove, above-mentioned second shear pin groove can also be the structure type in hole；One end of second shear pin 4 is inserted in the second shear pin hole, the other end
In inserting the second shear pin groove.
In addition, the external cylindrical surface of tapered sleeve 1 is evenly distributed and offers multiple closing piece mounting holes, packer sheet under above-mentioned slips
The relevant position of body 13 is provided with multiple closing piece mounting grooves, and closing piece 7 runs through closing piece mounting hole, and the end insertion closing piece of closing piece 7 is pacified
In tankage；Preferably, above-mentioned closing piece mounting groove is V-groove or deep-slotted chip breaker, and above-mentioned V-groove or deep-slotted chip breaker are enabled to, and closing piece 7 exists
In the case of lifting restrictions, closing piece mounting groove is smoothly skidded off, can effectively ensure that being smoothed out for removing seal for packer.Wherein, liquid
The top 15 of keyholed back plate line hydraulic channel 20 is used to connect liquid controling pipe line, i.e. top 15 for connecting ground control pipeline connection, bottom
Hold for installing seal plug 14, seal plug 14 is used to block liquid controling pipe line hydraulic channel 20.
When the pressurization of packer oil pipe sets or in production process, the internal pressure of main oil pipe communicating passage 30 can be by first
Intercommunicating pore 31 is delivered in driven cavity, and pressure is applied under slips on tapered sleeve 1 upwards, and pressure is applied to downwards grappling overcoat 11
On；Above-mentioned active force up and down, is not enough to cut the first shear pin 2 and the second shear pin 4, therefore will not produce the structure
Influence.
After the completion of packer setting, lower loop has certain pressure in vain, and the pressure is applied on packer body 13 upwards,
Packer body 13 is had upward movement tendency, and be delivered on closing piece 7；Due to the restriction effect of grappling overcoat 11, closing piece 7
Cannot depart from from packer body 13；The active force is delivered under slips on tapered sleeve 1, and by under external slips by closing piece 7
Tapered sleeve 1 is delivered on sleeve pipe；Based on internal and external pressure balance, grappling overcoat 11 will not cut the second shear pin 4, and grappling overcoat 11 is not yet
Can move down, closing piece 7 cannot also lift restrictions；Meanwhile, the shear strength of closing piece 7 is very big, excessive packer low pressure
Also closing piece 7 cannot be cut, can be only applied on sleeve pipe, after the completion of setting, external slips are extruded, its outer surface is higher than packer most
Large scale, slips tooth can sting tight internal surface of sleeve pipe, greatly enhance packer and bear to push ability, it is therefore prevented that packer is solved in advance
Envelope.
When removing seal for packer, can be pressurizeed by liquid controling pipe line hydraulic channel 20, pressure is entered by the second intercommunicating pore 22
Driven cavity, downward active force is applied on grappling overcoat 11, cuts the second shear pin 4, promotes grappling overcoat 11 descending；Also may be used
By the lower blanking plug in main oil pipe communicating passage 30 and pressurize, blanking plug plays closure main oil pipe chamber, suppresses set packer
Effect；Pressure enters driven cavity by the first intercommunicating pore 31, produces downward active force, shear pin second to cut to grappling overcoat 11
Nail 4, promotes grappling overcoat 11 descending.Above-mentioned removing seal for packer first two mode is feasible, can be according to field condition alternative.This
When, the closing piece 7 under slips inside tapered sleeve 1 has lifted restrictions, can vertical pulling packer upwards, cut the first shear pin 2, closing piece 7 departs from
Packer body 13, tapered sleeve 1 is descending relative to packer body 13 under slips, and tapered sleeve 1 can be answered under the action of the spring under slips
Position, so far removing seal for packer completion.
Preferably, the outer surface of above-mentioned grappling overcoat 11 is provided with first shoulder, and the outside of grappling overcoat 11 is arranged with spacing
Set 8；One end of stop collar 8 is connected with tapered sleeve under slips 1, and the inner surface of the other end is provided with spacing shoulder, spacing shoulder and first
The cooperation of shoulder is used to realize the position-limiting action of first shoulder；Wherein, the connected mode under stop collar 8 and slips between tapered sleeve 1,
Can be using the connected mode of screw thread, or trip bolt connected mode, or stop screw 3 connected mode, or it is similar
Connected mode, being stably connected between it can realize be defined.
Further, the inner surface of above-mentioned grappling overcoat 11 is provided with the second shoulder, and the second shoulder is moved for limiting closing piece 7
It is dynamic；In the folding process of grappling overcoat 11, the second shoulder departs from current location and is displaced downwardly to the lower section of closing piece 7, and grappling overcoat 11 is released
Closing piece 7 is limited.
In concrete operations, the setting of above-mentioned stop collar 8, it is intended to which limit grappling overcoat 11 moves down distance, to prevent grappling
Overcoat 11 excessively moves down the defect for causing；Grappling overcoat 11 is stressed driving, in folding process, the First that its outer surface is set
When shoulder grafting contacts the spacing shoulder of the inner surface setting of stop collar 8, by the backstop action of spacing shoulder, grappling overcoat 11 stops sliding
It is dynamic；In addition, during gliding, be arranged on the second shoulder of the inner surface of grappling overcoat 11 by the position of compression closing piece 7, slowly under
Move, and gradually release the compression operation to closing piece 7, final second shoulder is displaced downwardly to the lower section of closing piece 7, and it is right that grappling overcoat 11 is relieved
The limitation of closing piece 7.
Preferably, in order to improve the overall sealing performance of the utility model said structure；It is provided with above-mentioned driven cavity
Combination sealing 9 and segmentation set 10, the side wall of segmentation set 10 are provided with and extend radially through hole, and segmentation set 10 is arranged on combination sealing 9 and drives
Between the bottom of dynamic cavity；The setting of above-mentioned segmentation set 10, it is intended to avoid outside the grappling of combination sealing 10 and driven cavity bottom
Set 11 is contacted, and hole is extended radially through while splitting set 10 and being provided with, and the position where ensure that segmentation set 10 is connection constant-pressure cavity.
Wherein, the first intercommunicating pore 31 can be located at the top of combination sealing 9, and the second intercommunicating pore 22 can enter to be located at segmentation set 10
Lower section；In addition, the contact surface of tapered sleeve 1 and packer body 13 under contact surface, the slips of tapered sleeve 1 and grappling overcoat 11 under slips,
Grappling overcoat 11 is provided with sealing ring with the contact surface of packer body 13.In concrete operations, can be by above-mentioned multiple-sealed
The setting of circle, specifically includes the first sealing ring 3, the second sealing ring 6, the 3rd sealing ring 12 etc., above-mentioned multiple-sealed setting, energy
Enough effectively improve the sealing property and job stability of the mechanism；Wherein, the combination sealing 9 of piston structure form can be used,
Its sealing property is more reliable, and bearing capacity is higher.
The said structure that the utility model is provided, using high intensity closing piece mechanism, when pressure is arranged at packer bottom, owns
The upward power of packer that is applied to tapered sleeve under slips is passed to by closing piece, and be delivered on sleeve pipe, greatly enhance envelope
Bear to push ability every device；Said structure uses Redundancy Design, with dual unlocking structure, it is ensured that packer is unsealed completely；Together
When, mechanism structure composition is reasonable, and sealing stroke is short, possesses stroke limit structure, prevents grappling overcoat to be slipped to shaft bottom,
Avoid the connection of bottom annular space and annular space in oil pipe；In addition, piston structure of the said mechanism using combination sealing, sealing property can
Lean on, bearing capacity is high；The synthesis of the utility model structure is reasonable, with obvious creativeness, it is easy to promotes and implements.
In the description of the present application, term " installation ", " connected ", " connection ", " fixation " etc. all should be interpreted broadly, example
Such as, " connection " can be fixedly connected, or be detachably connected, or be integrally connected；Can be joined directly together, it is also possible to
It is indirectly connected to by intermediary.For the ordinary skill in the art, above-mentioned art can as the case may be understood
Language concrete meaning in this application.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that the specific features, structure, material or the feature that are described with reference to the embodiment or example are contained at least one reality of the application
In applying example or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or reality
Example.And, the specific features of description, structure, material or feature can in one or more any embodiments or example with
Suitable mode is combined.
Those skilled in the art should be understood that, although the implementation method disclosed by the utility model embodiment as above, but
Described content is only to readily appreciate the utility model embodiment and the implementation method that uses, is not limited to the utility model
Embodiment.Technical staff in any the utility model embodiment art, is taken off the utility model embodiment is not departed from
On the premise of the spirit and scope of dew, any modification can be carried out in the form and details implemented with change, but this practicality
The scope of patent protection of new embodiment, must be still defined by the scope of which is defined in the appended claims.
Claims (9)
1. a kind of packer, including packer body；Characterized in that,
The packer body is provided with main oil pipe communicating passage, liquid controling pipe line hydraulic channel through packer body two ends, institute
State packer body external cylindrical surface be provided with for connect main oil pipe communicating passage the first intercommunicating pore, for connecting hydraulic control pipe
Second intercommunicating pore of line hydraulic channel；
Tapered sleeve under slips is arranged with the outside of the packer body, by lock between tapered sleeve and packer body under the slips
Block is connected, and the outside of the closing piece is also arranged with the grappling overcoat for limiting closing piece movement, the grappling overcoat and envelope
Driven cavity is constituted between device body, first intercommunicating pore, the second intercommunicating pore connect driven cavity；
Combination sealing is provided with the driven cavity and segmentation covers, the side wall of the segmentation set is provided with and extends radially through hole, described
Segmentation is set between combination sealing and the bottom of driven cavity.
2. packer according to claim 1, it is characterised in that
The external cylindrical surface of tapered sleeve is evenly distributed and offers multiple closing piece mounting holes under the slips, the phase of the packer body
Position is answered to be provided with multiple closing piece mounting grooves, the closing piece runs through closing piece mounting hole, and the end insertion closing piece of the closing piece is installed
In groove.
3. packer according to claim 1 and 2, it is characterised in that
The first shear pin is provided with the slips between tapered sleeve and packer body, the external cylindrical surface of tapered sleeve is along week under the slips
To multiple first shear pin holes are uniformly offered, the relevant position of the packer body is provided with multiple first shear pin grooves；Described
One end of one shear pin is inserted in the first shear pin hole, and the other end is inserted in the first shear pin groove.
4. packer according to claim 1 and 2, it is characterised in that
The second shear pin is provided with the slips between tapered sleeve and grappling overcoat, the external cylindrical surface of tapered sleeve is circumferentially under the slips
Multiple second shear pin holes are uniformly offered, the relevant position of the grappling overcoat is provided with multiple second shear pin grooves；Described second cuts
One end of nail is inserted in the second shear pin hole, and the other end is inserted in the second shear pin groove.
5. packer according to claim 4, it is characterised in that
The outer surface of the grappling overcoat is provided with first shoulder, and stop collar is arranged with the outside of the grappling overcoat；It is described spacing
One end of set is connected with tapered sleeve under slips, and the inner surface of the other end is provided with spacing shoulder, the spacing shoulder and first shoulder
Coordinate the position-limiting action for realizing first shoulder.
6. packer according to claim 5, it is characterised in that
The inner surface of the grappling overcoat is provided with the second shoulder, and second shoulder is used to limit closing piece movement；
In grappling overcoat folding process, the second shoulder departs from current location and is displaced downwardly to closing piece lower section, and the grappling overcoat is released
Closing piece is limited.
7. packer according to claim 1 and 2, it is characterised in that
Under the slips under contact surface, the slips of tapered sleeve and grappling overcoat tapered sleeve and packer body contact surface, grappling overcoat
Contact surface with packer body is provided with sealing ring.
8. packer according to claim 1 and 2, it is characterised in that
The top of the liquid controling pipe line hydraulic channel is used to connect liquid controling pipe line, and bottom is used to install seal plug, the sealing
Plug is used to block liquid controling pipe line hydraulic channel.
9. packer according to claim 2, it is characterised in that
The closing piece mounting groove is V-groove or deep-slotted chip breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621232276.3U CN206290237U (en) | 2016-11-16 | 2016-11-16 | A kind of packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621232276.3U CN206290237U (en) | 2016-11-16 | 2016-11-16 | A kind of packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206290237U true CN206290237U (en) | 2017-06-30 |
Family
ID=59099269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621232276.3U Active CN206290237U (en) | 2016-11-16 | 2016-11-16 | A kind of packer |
Country Status (1)
| Country | Link |
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| CN (1) | CN206290237U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593345A (en) * | 2016-11-16 | 2017-04-26 | 中国海洋石油总公司 | Early releasing prevention structure of packer |
| CN109915067A (en) * | 2019-04-25 | 2019-06-21 | 中国海洋石油集团有限公司 | A kind of anti-packer surprisingly unsealed |
| CN116556878A (en) * | 2023-05-24 | 2023-08-08 | 东营市福利德石油科技开发有限责任公司 | Packer capable of being set and unset repeatedly |
-
2016
- 2016-11-16 CN CN201621232276.3U patent/CN206290237U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593345A (en) * | 2016-11-16 | 2017-04-26 | 中国海洋石油总公司 | Early releasing prevention structure of packer |
| CN106593345B (en) * | 2016-11-16 | 2019-05-28 | 中国海洋石油集团有限公司 | A kind of packer is anti-to solve seal structure in advance |
| CN109915067A (en) * | 2019-04-25 | 2019-06-21 | 中国海洋石油集团有限公司 | A kind of anti-packer surprisingly unsealed |
| CN116556878A (en) * | 2023-05-24 | 2023-08-08 | 东营市福利德石油科技开发有限责任公司 | Packer capable of being set and unset repeatedly |
| CN116556878B (en) * | 2023-05-24 | 2023-12-26 | 东营市福利德石油科技开发有限责任公司 | Packer capable of being set and unset repeatedly |
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |
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