CN202832367U - Packer - Google Patents
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- Publication number
- CN202832367U CN202832367U CN 201220451266 CN201220451266U CN202832367U CN 202832367 U CN202832367 U CN 202832367U CN 201220451266 CN201220451266 CN 201220451266 CN 201220451266 U CN201220451266 U CN 201220451266U CN 202832367 U CN202832367 U CN 202832367U
- Authority
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- Prior art keywords
- deblocking
- sleeve
- central tube
- packer
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 238000012856 packing Methods 0.000 claims description 24
- 206010055018 Gingival cyst Diseases 0.000 claims description 3
- 210000004907 gland Anatomy 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model discloses a packer, which comprises a central tube, a liner tube, a rubber sleeve component, a propelling sleeve and a lower cylinder sleeve; the upper end of the liner tube is provided with a deblocking pressure guide hole, a hydraulic setting and deblocking mechanism is arranged between the pushing sleeve and the central tube, and the hydraulic setting and deblocking mechanism comprises a deblocking piston, a deblocking sleeve and a locking block; the upper end of the deblocking piston is sleeved at the lower end of the liner tube and is abutted against the inner flange of the propelling sleeve, the inner wall of the deblocking piston is hermetically connected with the outer wall of the central tube, and the outer wall of the deblocking piston is hermetically connected with the inner wall of the propelling sleeve; the lower end of the deblocking piston is sleeved at the upper end of the deblocking sleeve, and the lower end of the deblocking sleeve is connected with the central pipe; the upper end of the locking block is sleeved on the deblocking sleeve, and the lower end of the locking block is fixedly connected with the lower cylinder sleeve in a sealing way; the outer wall of the upper end of the deblocking sleeve and the inner wall of the locking block are provided with mutually matched clamping structures respectively at corresponding positions, an elastic reset element is arranged in the clamping structure of the locking block, the outer wall of the lower end of the deblocking piston is provided with an outer inclined plane, and the inner wall of the upper end of the locking block is provided with an inner inclined plane matched with the outer inclined plane. The hydraulic setting and unsetting mechanism enables the packer to be recycled.
Description
Technical field
The utility model relates to laminated distributor under well oil tool field, particularly a kind of packer.
Background technology
Packer be a kind of have elastic sealing elements, and whereby packing various sizes tubing string and well between and annular space between the tubing string; and isolated payzone; produce (notes) liquid with control, the downhole tool of protective casing is widely used in the operations such as drilling well, well cementation, test, completion.
At present, conventional packer generally comprises central tube, bushing pipe, packing element assembly, advances cover and lower cylinder sleeve; Described packing element assembly is sleeved on the described bushing pipe, described liner sleeve is contained in described central tube top, described propelling cover sealing shroud is contained on the described bushing pipe, described lower cylinder sleeve is sleeved on described central tube bottom, lower cylinder sleeve upper end is sealedly and fixedly connected with described propelling cover lower end, and described deblocking sleeve pipe lower end is connected by the deblocking pin with described central tube.
In realizing process of the present utility model, the inventor finds that there is following problem at least in prior art:
Conventional packer generally adopts machinery to separate sealing mechanism (deblocking pin), only has during deblocking by the upper lifting pipe post, makes the deblocking pin cut off the realization deblocking, and therefore, packer can't reuse in case solution is honored as a queen.
The utility model content
For packer is reused, the utility model embodiment provides a kind of packer.Described technical scheme is as follows:
A kind of packer comprises that two ends are overlapped and lower cylinder sleeve with central tube, bushing pipe, packing element assembly, the propelling of top connection and lower contact respectively up and down; Described liner sleeve is contained in described central tube top, described packing element assembly is sleeved on the described bushing pipe, described lower cylinder sleeve lower end sealing shroud is contained in the described lower contact, lower cylinder sleeve upper end is sealedly and fixedly connected with described propelling cover lower end, advance the set upper side to be provided with inward flange, described inward flange sealing shroud is contained in described liner at its lower end and offsets with described packing element assembly, and described central tube lower end is provided with and sets pressure guide hole;
Described bushing pipe upper end is provided with the deblocking pressure guide hole, is provided with hydraulic pressure between described propelling cover and the central tube and sits the solution sealing mechanism, and described hydraulic pressure is sat the solution sealing mechanism and comprised deblocking piston, deblocking sleeve pipe and lock dog;
Described deblocking piston upper end is sleeved on described liner at its lower end and leans with the inward flange of described propelling cover, and deblocking piston inner wall and described central tube outer wall are tightly connected, and the deblocking piston outer wall overlaps inner wall sealing with described propelling and is connected; Described deblocking piston lower end is sleeved on described deblocking sleeve pipe upper end, and described deblocking sleeve pipe lower end links to each other with described central tube; Described lock dog upper end is sleeved on the described deblocking sleeve pipe, and the lock dog lower end is fixedly connected with described lower liner packing; Described deblocking sleeve pipe upper end outer wall and position corresponding to lock dog inwall are respectively equipped with the interface arrangment that cooperatively interacts, the in-built flexible reposition element of the interface arrangment of described lock dog, described deblocking piston lower end outer wall is provided with outer inclined-plane, and described lock dog upper end inwall is provided with the interior inclined-plane that matches with described outer inclined-plane.By the hydraulic pressure that the adds hydraulic pressure deblocking of having sat the deblocking winding machine, and solution this packer of being honored as a queen can be recycled; Simultaneously, described hydraulic pressure is sat the solution sealing mechanism and can be used simultaneously with machinery solution sealing mechanism (deblocking pin), has improved the reliability of packer.
Concrete, described deblocking piston lower end outer wall and inwall are respectively equipped with outer lug boss and inner convex platform, be connected by O type circle air-tight movable between described outer lug boss and the described propelling cover, also be connected by O type circle air-tight movable between described inner convex platform and the described central tube, the annular space that described deblocking piston and described central tube surround is communicated with described deblocking pressure guide hole by the space between described bushing pipe and the central tube.
Concrete, described interface arrangment is gingival cyst of mucous gland in the newborn, snap ring or relative inside and outside wall raggle card.
Further, the described deblocking pressure guide hole outside is provided with filter sleeve, and the upper end of this filter sleeve and described top connection are tightly connected, and the lower end of filter sleeve and described bushing pipe upper end are sealedly and fixedly connected.Can prevent effectively that by the filter sleeve that adds silt particle from entering in this packer, improve described hydraulic pressure and sat the working environment of separating sealing mechanism, improve the sealing effectiveness of packer and prolonged application life of packer.
Further, be provided with baffle ring between described deblocking sleeve pipe and the described deblocking piston, described baffle ring is fixed on the described central tube, excessively the deblocking pin is cut off to prevent that the deblocking sleeve pipe is up.
Wherein, described deblocking pressure guide hole is circulus.
Concrete, be connected by O type circle air-tight movable between the outward flange of described propelling cover and the described liner at its lower end.
Concrete, described deblocking piston lower end is connected by thread seal with described deblocking sleeve pipe upper end.
Concrete, described lock dog lower end is connected by thread seal with described lower cylinder sleeve.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is: the fluid in the central tube enters and sets oil circuit by setting pressure guide hole, the deblocking piston will advance cover upwards top and extruding packing element assembly under its pressure-acting, diameter constantly becomes large so that the packing element assembly compresses, until mineshaft annulus space (space between pit shaft and this packer) sealed, simultaneously, advance the lower cylinder sleeve of cover drive and lock dog to move up, until the interface arrangment interlock on the interface arrangment on the lock dog and the deblocking sleeve pipe, after the central tube release, because the snap-in force of interface arrangment, the packing element assembly continues to be subjected to lower cylinder sleeve to advance the extruding of cover and no longer resilience, thereby has realized setting.Liquid is entered by the deblocking pressure guide hole on the filter sleeve, promoting the deblocking piston moves downward, outer inclined-plane oblique cutting on the deblocking piston is raised the interface arrangment of lock dog, so that the interface arrangment of interlock is threaded off on deblocking sleeve pipe and the lock dog, the dual screen resilience of simultaneously packing element assembly release of pressure resilience and elastic reset member resilience makes the lock dog return, and lock dog and deblocking sleeve pipe break away from fully, packing element component recovery nature, open in the mineshaft annulus space, thereby realize deblocking.That is to say, the embodiment of the invention by the hydraulic pressure that adds sit the deblocking winding machine hydraulic pressure sit deblocking, and then so that packer can be recycled.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is that the utility model embodiment is in the structural representation under the well-flushing state;
Fig. 2 is that the utility model embodiment is in the structural representation under the state of setting;
Fig. 3 is the structural representation of the utility model embodiment when being in deblocking.
Among the figure: top connection 1, lower contact 2, central tube 3, bushing pipe 4, packing element assembly 5 advances cover 6, lower cylinder sleeve 7, deblocking pin 8, set pressure guide hole 9, deblocking pressure guide hole 10, hydraulic pressure are sat and are separated sealing mechanism 11, deblocking piston 11a, outer lug boss 11a1, inner convex platform 11a2, deblocking sleeve pipe 11b, lock dog 11c, interface arrangment 11d, spring 11e, outer inclined-plane 11f, interior inclined-plane 11g, baffle ring 12, filter sleeve 13.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model embodiment is described in further detail.
Referring to Fig. 1～Fig. 3, the utility model embodiment provides a kind of packer.Referring to Fig. 1, this packer comprise two ends up and down respectively with central tube 3, bushing pipe 4, the packing element assembly 5 of top connection 1 and lower contact 2, advance cover 6 and lower cylinder sleeve 7; Bushing pipe 4 is sleeved on central tube 3 tops, packing element assembly 5 is sleeved on the bushing pipe 4, lower cylinder sleeve 7 lower end sealing shrouds are contained in the lower contact 2, lower cylinder sleeve 7 upper ends are sealedly and fixedly connected with advancing cover 6 lower ends, advance cover 6 upper ends to be provided with inward flange, this inward flange sealing shroud is contained in bushing pipe 4 lower ends and offsets with packing element assembly 5, and central tube 3 lower ends set pressure guide hole 9, bushing pipe 4 upper ends are provided with deblocking pressure guide hole 10, advance and are provided with hydraulic pressure seat solution sealing mechanism 11 between cover 6 and the central tube 3.
Particularly, hydraulic pressure seat solution sealing mechanism 11 comprises deblocking piston 11a, deblocking sleeve pipe 11b and lock dog 11c; Deblocking piston 11a upper end is sleeved on bushing pipe 4 lower ends and leans with the inward flange of described propelling cover 6, deblocking piston 11a inwall and central tube 3 outer walls are tightly connected, deblocking piston 11a outer wall is connected with advancing cover 6 inner wall sealings, and the annular space that deblocking piston 11a and central tube 3 surround forms the deblocking oil circuit; Deblocking piston 11a lower end is sleeved on deblocking sleeve pipe 11b upper end, and deblocking sleeve pipe 11b lower end is connected by deblocking pin 8 with central tube 3; Lock dog 11c upper end is sleeved on the deblocking sleeve pipe 11b, and lock dog 11c lower end and lower cylinder sleeve 7 are sealedly and fixedly connected, and the space that advances cover 6, deblocking piston 11a, deblocking sleeve pipe 11b, lock dog 11c, lower cylinder sleeve 7, lower contact 2 and central tube 3 to surround forms and sets oil circuit; Deblocking sleeve pipe 11b upper end outer wall and lock dog 11c inwall are respectively equipped with the interface arrangment 11d that cooperatively interacts, the in-built flexible reposition element 11e of the interface arrangment 11d of lock dog 11c, deblocking piston 11a lower end outer wall is provided with outer inclined-plane 11f, and lock dog 11c upper end inwall is provided with the interior inclined-plane 11g that matches with outer inclined-plane 11f.
Particularly, in the present embodiment, interface arrangment 11d is gingival cyst of mucous gland in the newborn, easily knows, in other embodiments, interface arrangment can be designed to snap ring or the relative structures such as inside and outside wall raggle card.Elastic reset member 11e includes but not limited to spring.
Wherein, deblocking piston 11a lower end outer wall and inwall are respectively equipped with outer lug boss 11a1 and inner convex platform 11a2, outer lug boss 11a1 is connected by O type circle air-tight movable with advancing between the cover 6, also be connected by O type circle air-tight movable between inner convex platform 11a2 and the central tube 3, the consistency of thickness of the thickness of inner convex platform 11a2 and bushing pipe 4, the annular space that deblocking piston 11a and central tube 3 surround is communicated with deblocking pressure guide hole 10 by the space between bushing pipe 4 and the central tube 3.
Wherein, deblocking pressure guide hole 10 can be circulus.
Particularly, be connected by O type circle air-tight movable on the deblocking piston 11a with between bushing pipe 4 lower ends.
Particularly, deblocking piston 11a lower end is connected by thread seal with deblocking sleeve pipe 11b upper end.
Particularly, lock dog 11c lower end and lower cylinder sleeve 7 are connected by thread seal.
Further, deblocking sleeve pipe 11b lower end links to each other by deblocking pin 8 with central tube 3 lower ends.Hydraulic pressure is sat solution sealing mechanism 11 and can be used simultaneously with machinery solution sealing mechanism (deblocking pin 8), has improved the reliability of packer.
Further, be provided with baffle ring 12 between deblocking sleeve pipe 11b and the deblocking piston 11a, baffle ring 12 is fixed on the central tube 3, excessively deblocking pin 8 is cut off to prevent that deblocking sleeve pipe 11b is up.Particularly, circumferentially offer groove on the central tube 3, baffle ring 12 is stuck in this groove.
Further, deblocking pressure guide hole 10 outsides are provided with filter sleeve 13, and upper end and the top connection of this filter sleeve 13 are tightly connected, and the lower end of filter sleeve 13 and bushing pipe 4 upper ends are sealedly and fixedly connected.Can prevent effectively that by the filter sleeve 13 that adds silt particle from entering in this packer, improve hydraulic pressure and sat the working environment of separating sealing mechanism 11, improve the sealing effectiveness of packer and prolonged application life of packer.
During the utility model specific works:
1, set process: the fluid in the central tube 3 enters and sets oil circuit by setting pressure guide hole 9, deblocking piston 11a will advance cover 6 upwards top and extruding packing element assembly 5 under pressure, diameter constantly becomes large so that packing element assembly 5 compresses, until mineshaft annulus space (space between pit shaft and this packer) sealed, simultaneously, advance the lower cylinder sleeve 7 of cover 6 drives and lock dog 11c to move up, until the interface arrangment interlock on the interface arrangment 11d on the lock dog 11c and the deblocking sleeve pipe 11b, after central tube 3 releases, because the snap-in force of interface arrangment, packing element assembly 5 continues to be subjected to lower cylinder sleeve 7 with the extruding that advances cover 6 and no longer resilience, thereby has realized setting.
2, deblocking process:
The deblocking mode of the packer in the embodiment of the invention has two kinds: hydraulic pressure deblocking and mechanical deblocking.What the hydraulic pressure deblocking adopted is that annular space is suppressed mode, liquid is entered by the deblocking pressure guide hole 10 on the filter sleeve 13, enter the deblocking oil circuit by the slit between central tube 3 and the bushing pipe 4, thereby promoting deblocking piston 11a moves downward, outer inclined-plane 11f oblique cutting on the deblocking piston 11a is raised the interface arrangment 11d of lock dog 11c, so that the interface arrangment of the upper interlock of deblocking sleeve pipe 11b and lock dog 11c is threaded off, the dual screen resilience of simultaneously packing element assembly 5 release of pressure resiliences and elastic reset member 11e resilience makes lock dog 11c return, lock dog 11c and deblocking sleeve pipe 11b break away from fully, packing element assembly 5 recovers nature, open in the mineshaft annulus space, thereby realize deblocking.The machinery deblocking adopts is that the upper lifting pipe post is cut off deblocking pin 8 and can be realized deblocking, and mechanical deblocking can be used to process sand and buries situation.
3, washing well process:
Under the deblocking state, can utilize the mineshaft annulus space to carry out well-flushing, after well-flushing finishes, the oil pipe pressurization, the restting process can make packer again set.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is: sit by the hydraulic pressure that adds and separate sealing mechanism 11 and realized that hydraulic pressure sits deblocking, thereby so that packer can be recycled; Simultaneously, hydraulic pressure is sat solution sealing mechanism 11 and can be used simultaneously with machinery solution sealing mechanism (deblocking pin), has improved the reliability of packer; And the filter sleeve 13 that adds can prevent effectively that silt particle from entering in this packer, has improved hydraulic pressure and has sat the working environment of separating sealing mechanism 11, has improved the sealing effectiveness of packer and has prolonged application life of packer.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. a packer comprises that (6) and lower cylinder sleeve (7) are overlapped with central tube (3), bushing pipe (4), packing element assembly (5), the propelling of top connection (1) and lower contact (2) respectively in two ends up and down; Described bushing pipe (4) is sleeved on described central tube (3) top, described packing element assembly (5) is sleeved on the described bushing pipe (4), described lower cylinder sleeve (7) lower end sealing shroud is contained in the described lower contact (2), lower cylinder sleeve (7) upper end is sealedly and fixedly connected with described propelling cover (6) lower end, advance cover (6) upper end to be provided with inward flange, described inward flange sealing shroud is contained in described bushing pipe (4) lower end and offsets with described packing element assembly (5), and described central tube (3) lower end is provided with and sets pressure guide hole (9);
It is characterized in that, described bushing pipe (4) upper end is provided with deblocking pressure guide hole (10), be provided with hydraulic pressure between described propelling cover (6) and the central tube (3) and sit solution sealing mechanism (11), described hydraulic pressure is sat solution sealing mechanism (11) and is comprised deblocking piston (11a), deblocking sleeve pipe (11b) and lock dog (11c);
Described deblocking piston (11a) upper end is sleeved on described bushing pipe (4) lower end and leans with the inward flange of described propelling cover (6), deblocking piston (11a) inwall and described central tube (3) outer wall are tightly connected, and deblocking piston (11a) outer wall is connected with described propelling cover (6) inner wall sealing; Described deblocking piston (11a) lower end is sleeved on described deblocking sleeve pipe (11b) upper end, and described deblocking sleeve pipe (11b) lower end links to each other with described central tube (3); Described lock dog (11c) upper end is sleeved on the described deblocking sleeve pipe (11b), and lock dog (11c) lower end and described lower cylinder sleeve (7) are sealedly and fixedly connected; Described deblocking sleeve pipe (11b) upper end outer wall and lock dog (11c) inwall are respectively equipped with the interface arrangment (11d) that cooperatively interacts, the in-built flexible reposition element of interface arrangment (11d) (11e) of described lock dog (11c), described deblocking piston (11a) lower end outer wall is provided with outer inclined-plane (11f), and described lock dog (11c) upper end inwall is provided with the interior inclined-plane (11g) that matches with described outer inclined-plane (11f).
2. packer as claimed in claim 1, it is characterized in that, described deblocking piston (11a) lower end outer wall and inwall are respectively equipped with outer lug boss (11a1) and inner convex platform (11a2), be connected by O type circle air-tight movable between described outer lug boss (11a1) and the described propelling cover (6), also be connected by O type circle air-tight movable between described inner convex platform (11a2) and the described central tube (3), the annular space that described deblocking piston (11a) and described central tube (3) surround is communicated with described deblocking pressure guide hole (10) by the space between described bushing pipe (4) and the central tube (3).
3. packer as claimed in claim 1 or 2 is characterized in that, described interface arrangment (11d) is gingival cyst of mucous gland in the newborn, snap ring or relative inside and outside wall raggle card.
4. packer as claimed in claim 1 or 2, it is characterized in that, described deblocking pressure guide hole (10) outside is provided with filter sleeve (13), and upper end and the described top connection of this filter sleeve (13) are tightly connected, and the lower end of filter sleeve (13) and described bushing pipe (4) upper end are sealedly and fixedly connected.
5. packer as claimed in claim 1 or 2 is characterized in that, is provided with baffle ring (12) between described deblocking sleeve pipe (11b) and the described deblocking piston (11a), and described baffle ring (12) is fixed on the described central tube (3).
6. packer as claimed in claim 1 or 2 is characterized in that, described deblocking pressure guide hole (10) is circulus.
7. packer as claimed in claim 1 or 2 is characterized in that, is connected by O type circle air-tight movable between the outward flange of described propelling cover (6) and described bushing pipe (4) lower end.
8. packer as claimed in claim 1 or 2 is characterized in that, described deblocking piston (11a) lower end is connected by thread seal with described deblocking sleeve pipe (11b) upper end.
9. packer as claimed in claim 1 or 2 is characterized in that, described lock dog (11c) lower end is connected by thread seal with described lower cylinder sleeve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220451266 CN202832367U (en) | 2012-09-05 | 2012-09-05 | Packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220451266 CN202832367U (en) | 2012-09-05 | 2012-09-05 | Packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832367U true CN202832367U (en) | 2013-03-27 |
Family
ID=47944099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220451266 Expired - Fee Related CN202832367U (en) | 2012-09-05 | 2012-09-05 | Packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202832367U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457613A (en) * | 2018-02-07 | 2018-08-28 | 中国石油集团西部钻探工程有限公司 | Recyclable tubular packer |
| CN110735614A (en) * | 2019-10-11 | 2020-01-31 | 中国石油天然气股份有限公司 | fracturing plugging bridge plug and setting and unsetting method thereof |
| CN110761757A (en) * | 2019-11-29 | 2020-02-07 | 李杨 | Multi-pipe type high-efficiency stratified water injection adjusting device for balancing water injection quantity |
| CN110887641A (en) * | 2018-08-15 | 2020-03-17 | 中国石油化工股份有限公司 | Portable packer auxiliary unsealing device and using method |
| CN111852381A (en) * | 2019-04-28 | 2020-10-30 | 中国石油天然气股份有限公司 | Fire-driving packer |
-
2012
- 2012-09-05 CN CN 201220451266 patent/CN202832367U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457613A (en) * | 2018-02-07 | 2018-08-28 | 中国石油集团西部钻探工程有限公司 | Recyclable tubular packer |
| CN110887641A (en) * | 2018-08-15 | 2020-03-17 | 中国石油化工股份有限公司 | Portable packer auxiliary unsealing device and using method |
| CN110887641B (en) * | 2018-08-15 | 2022-05-10 | 中国石油化工股份有限公司 | Portable packer auxiliary unsealing device and using method |
| CN111852381A (en) * | 2019-04-28 | 2020-10-30 | 中国石油天然气股份有限公司 | Fire-driving packer |
| CN111852381B (en) * | 2019-04-28 | 2022-08-05 | 中国石油天然气股份有限公司 | Fire-driving packer |
| CN110735614A (en) * | 2019-10-11 | 2020-01-31 | 中国石油天然气股份有限公司 | fracturing plugging bridge plug and setting and unsetting method thereof |
| CN110735614B (en) * | 2019-10-11 | 2024-05-28 | 中国石油天然气股份有限公司 | Fracturing plugging bridge plug and setting and unsetting method thereof |
| CN110761757A (en) * | 2019-11-29 | 2020-02-07 | 李杨 | Multi-pipe type high-efficiency stratified water injection adjusting device for balancing water injection quantity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20210905 |