CN204266981U - The airtight Anticreep packer of a kind of hydraulic cylinder-type - Google Patents
The airtight Anticreep packer of a kind of hydraulic cylinder-type Download PDFInfo
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- CN204266981U CN204266981U CN201420703504.5U CN201420703504U CN204266981U CN 204266981 U CN204266981 U CN 204266981U CN 201420703504 U CN201420703504 U CN 201420703504U CN 204266981 U CN204266981 U CN 204266981U
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- center tube
- packing element
- packer
- enclosed
- airtight
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Abstract
The utility model discloses the airtight Anticreep packer of a kind of hydraulic cylinder-type, what comprise lower center tube and be enclosed within lower center tube outer wall sets packing element, the described packing element upper end that sets is provided with the deblocking device be enclosed within equally on lower center tube, also comprise upper center tube, grappling packing element, hydraulic anchoring device, described upper center tube is axially connected with lower center tube by carrying pipe nipple, described grappling packing element is enclosed within upper center tube outer wall, and described hydraulic anchoring device is positioned at grappling packing element lower end and is enclosed within equally on upper center tube.The utility model effectively can improve on the one hand the anticreep performance of packer, extends packer application life; Alleviate the infringement to sleeve pipe on the other hand, reduce overhaul risk.
Description
Technical field
The utility model relates to water injection well in oil fields seperated layer water injection exploitation packer, specifically the airtight Anticreep packer of a kind of hydraulic cylinder-type.
Background technology
Water filling keeps formation pressure, realizes oilfield stable production, improves the important measures of Development Response of Oilfield.For multilayer field, be adjustment interlayer contradiction, control the rising of crude oil water containing and improve oil recovery factor, need seperated layer water injection be implemented.Packer is as the key tool of layered water injection process pipe column, and its application life affects the layered effect of water injection string and the principal element of tubing string period of validity.
Water injection string is subject to the impact of temperature and pressure effect in well, when water injection well duty changes, tubing string is wriggled under pressure effect or temperature effect effect, has had a strong impact on the sealing effectiveness of packer, shorten its application life, even cause packing element to tear and cause tubing string to lose efficacy.
In order to reduce the impact of string creep on packer, realized the grappling of tubing string at present by instruments such as supporting hydraulic anchor, hydraulic slips, thus solve string creep problem.But this method easily damages sleeve pipe, and be subject to the impact of high temperature, corrosion and scaling, there is overhaul risk in the operation of later stage inspection pipe, causes huge economic loss.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic cylinder-type airtight Anticreep packer, effectively can improve on the one hand the anticreep performance of packer, extends packer application life; Alleviate the infringement to sleeve pipe on the other hand, reduce overhaul risk.
In order to reach above-mentioned purpose, the utility model have employed following technical scheme, the airtight Anticreep packer of a kind of hydraulic cylinder-type, what comprise lower center tube and be enclosed within lower center tube outer wall sets packing element, the described packing element upper end that sets is provided with the deblocking device be enclosed within equally on lower center tube, also comprise upper center tube, grappling packing element, hydraulic anchoring device, described upper center tube is axially connected with lower center tube by carrying pipe nipple, described grappling packing element is enclosed within upper center tube outer wall, and described hydraulic anchoring device is positioned at grappling packing element lower end and is enclosed within equally on upper center tube.
The described packing element two ends that set arrange gear bowl, described hydraulic anchoring device comprises fluid cylinder cover, liquid cylinder piston, described fluid cylinder set upper side is connected with the gear bowl of grappling packing element lower end, lower end is then connected with carrying pipe nipple by connector, described fluid cylinder cover is inner forms airtight plunger shaft, arranges liquid cylinder piston in plunger shaft.
The gear bowl of described grappling packing element upper end is connected with top connection by sliding sleeve, and the upper end of described upper center tube is also connected with top connection.
Described deblocking device comprises well-flushing cover, deblocking piston, seal nipple, closed loop, spring, described seal nipple is enclosed within lower center tube outer wall, one circle annulus boss is set in the middle part of seal nipple, the upper and lower side of this boss connects well-flushing cover and sealing interstage sleeve by slipper seal mode respectively, described well-flushing cover inside arranges deblocking piston, described sealing interstage sleeve inside arranges joint ring, and described joint ring lower end connects the upper end setting packing element by spring.
Describedly set packing element lower end and lower center tube outer wall is connected with lower contact, lower contact outer wall arranges interstage sleeve, and interstage sleeve lower end arranges baffle ring.
Compared to prior art, the utility model has following beneficial effect:
This packer is formed primarily of soft anchor mechanism, solution sealing mechanism and setting mechanism three part.During water filling, high-pressure fluid promotes liquid cylinder piston through upper center tube hydraulic pressure hole up, and the hydraulic oil in compression fluid cylinder makes grappling packing element that radial bulging occur to be close to sleeve pipe, thus anchoring string; Simultaneously high-pressure fluid makes to set packing element through lower center tube hydraulic pressure hole and radial bulging occurs, Seal Oil cover annular space.
When stopping note, grappling packing element reclaims, and removes anchoring states; Closure mechanism contacts with seal nipple and seals under the promotion of spring, and pinned by pressure liquid, cartridge does not reclaim, and is still in sealing state.During anti-flushing well, deblocking piston, under hydraulic action, promotes pressure ring descending, Compress Spring, and open feed pathway, the pressurised fluid stream of pinning goes out, and sets packing element deblocking.
Packer is provided with soft anchor mechanism, improves the anticreep performance of packer, prevent string creep, alleviate the damage to sleeve pipe, extend the application life of packer; Hydraulic oil is filled in the fluid cylinder inside of soft anchor mechanism, decreases the corrosion and scaling impact of formation fluid, improves the reliability of unfreezing, effectively prevent the risk of overhaul; Meanwhile, even if unique fluid cylinder design makes grappling packing element damage, hydraulic oil is missed, and does not still affect the layered effect of packer; Setting mechanism is closure mechanism, and not deblocking when stopping note, effectively prevent the generation that interlayer is altered.
Accompanying drawing explanation
Fig. 1 is the structural representation of the airtight Anticreep packer of a kind of hydraulic cylinder-type of the present utility model.
In figure: 1-top connection; 2-sliding sleeve; 3-gear bowl; 4-upper center tube; 5-grappling packing element; 6-fluid cylinder cover; 7-liquid cylinder piston; 8-connector; 9-carrying pipe nipple; 10-well-flushing cover; 11-deblocking piston; 12-seal nipple; 13-closed loop; 14-spring; 15-lower center tube; 16-set packing element; 17-interstage sleeve; 18-baffle ring; 19-lower contact.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for being limited the utility model.
As shown in Figure 1, the airtight Anticreep packer of a kind of hydraulic cylinder-type, what comprise lower center tube 15 and be enclosed within lower center tube outer wall sets packing element 16, the described packing element upper end that sets is provided with the deblocking device be enclosed within equally on lower center tube, also comprise upper center tube 4, grappling packing element 5, hydraulic anchoring device, described upper center tube is axially connected with lower center tube by carrying pipe nipple 9, described grappling packing element is enclosed within upper center tube outer wall, and described hydraulic anchoring device is positioned at grappling packing element lower end and is enclosed within equally on upper center tube.The described packing element two ends that set arrange gear bowl 3, described hydraulic anchoring device comprises fluid cylinder cover 6, liquid cylinder piston 7, described fluid cylinder set upper side is connected with the gear bowl of grappling packing element lower end, lower end is then connected with carrying pipe nipple by connector 8, described fluid cylinder cover is inner forms airtight plunger shaft, arranges liquid cylinder piston in plunger shaft.The gear bowl of described grappling packing element upper end is connected with top connection 1 by sliding sleeve 2, and the upper end of described upper center tube is also connected with top connection.
Described deblocking device comprises well-flushing cover 10, deblocking piston 11, seal nipple 12, closed loop 13, spring 14, described seal nipple is enclosed within lower center tube outer wall, one circle annulus boss is set in the middle part of seal nipple, the upper and lower side of this boss connects well-flushing cover and sealing interstage sleeve by slipper seal mode respectively, described well-flushing cover inside arranges deblocking piston 11, described sealing interstage sleeve inside arranges joint ring 13, and described joint ring lower end connects the upper end setting packing element by spring.Describedly set packing element lower end and lower center tube outer wall is connected with lower contact 19, lower contact outer wall arranges interstage sleeve 17, and interstage sleeve lower end arranges baffle ring 18.
The course of work: top connection 1 is connected with sliding sleeve 2, upper center tube 4; Gear bowl 3 is connected with grappling packing element 5; Liquid cylinder piston 6 is installed in the annular space of fluid cylinder cover 7 and upper center tube 4 formation; Connector 8 and well-flushing overlap 10 and are connected by carrying pipe nipple 9; Deblocking piston 11 is installed in the annular space between well-flushing piston 10 and lower center tube 15; Closed loop 13 is installed between seal nipple 12 and spring 14; Setting packing element 16 is installed on outside lower center tube 15; Interstage sleeve 17, baffle ring 18 are threaded connection with lower contact 19.Connected pipes, down to projected depth.During water filling, oil pipe hydraulic pressure promotes the up compression hydraulic oil of liquid cylinder piston through upper center tube hydraulic pressure hole, make grappling packing element be close to sleeve pipe, anchoring string; Simultaneously oil pipe hydraulic pressure makes to set packing element through lower center tube hydraulic pressure hole and sets.When stopping note, grappling packing element, under the effect of natural resiliency power, reclaims and removes anchoring states; Under the effect of hydraulic pressure and spring force, sealing mechanism (seal nipple, closed loop, spring) closes feed pathway, sets packing element and is in Expansion sealing state all the time, can not regain.During anti-flushing well, deblocking piston is under hydraulic action, and promote closed loop descending, Compress Spring, opens feed pathway, makes packing element deblocking.
The foregoing is only preferred embodiment of the present utility model, be not used to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (5)
1. the airtight Anticreep packer of hydraulic cylinder-type, what comprise lower center tube and be enclosed within lower center tube outer wall sets packing element, the described packing element upper end that sets is provided with the deblocking device be enclosed within equally on lower center tube, it is characterized in that, also comprise upper center tube, grappling packing element, hydraulic anchoring device, described upper center tube is axially connected with lower center tube by carrying pipe nipple, and described grappling packing element is enclosed within upper center tube outer wall, and described hydraulic anchoring device is positioned at grappling packing element lower end and is enclosed within equally on upper center tube.
2. the airtight Anticreep packer of a kind of hydraulic cylinder-type according to claim 1, it is characterized in that, the described packing element two ends that set arrange gear bowl, described hydraulic anchoring device comprises fluid cylinder cover, liquid cylinder piston, described fluid cylinder set upper side is connected with the gear bowl of grappling packing element lower end, lower end is then connected with carrying pipe nipple by connector, and described fluid cylinder cover is inner forms airtight plunger shaft, arranges liquid cylinder piston in plunger shaft.
3. the airtight Anticreep packer of a kind of hydraulic cylinder-type according to claim 2, is characterized in that, the gear bowl of described grappling packing element upper end is connected with top connection by sliding sleeve, and the upper end of described upper center tube is also connected with top connection.
4. the airtight Anticreep packer of a kind of hydraulic cylinder-type according to claim 1, it is characterized in that, described deblocking device comprises well-flushing cover, deblocking piston, seal nipple, closed loop, spring, described seal nipple is enclosed within lower center tube outer wall, one circle annulus boss is set in the middle part of seal nipple, the upper and lower side of this boss connects well-flushing cover and sealing interstage sleeve by slipper seal mode respectively, described well-flushing cover inside arranges deblocking piston, described sealing interstage sleeve inside arranges joint ring, and described joint ring lower end connects the upper end setting packing element by spring.
5. the airtight Anticreep packer of a kind of hydraulic cylinder-type according to claim 1, is characterized in that, described in set packing element lower end and lower center tube outer wall is connected with lower contact, lower contact outer wall arranges interstage sleeve, and interstage sleeve lower end arranges baffle ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703504.5U CN204266981U (en) | 2014-11-20 | 2014-11-20 | The airtight Anticreep packer of a kind of hydraulic cylinder-type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703504.5U CN204266981U (en) | 2014-11-20 | 2014-11-20 | The airtight Anticreep packer of a kind of hydraulic cylinder-type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204266981U true CN204266981U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420703504.5U Expired - Fee Related CN204266981U (en) | 2014-11-20 | 2014-11-20 | The airtight Anticreep packer of a kind of hydraulic cylinder-type |
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| Country | Link |
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| CN (1) | CN204266981U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806193A (en) * | 2015-05-08 | 2015-07-29 | 中国海洋石油总公司 | Packer |
| CN105672934A (en) * | 2014-11-20 | 2016-06-15 | 中国石油化工股份有限公司 | Hydraulic-cylinder type enclosed anti-creep packer |
-
2014
- 2014-11-20 CN CN201420703504.5U patent/CN204266981U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672934A (en) * | 2014-11-20 | 2016-06-15 | 中国石油化工股份有限公司 | Hydraulic-cylinder type enclosed anti-creep packer |
| CN105672934B (en) * | 2014-11-20 | 2018-04-03 | 中国石油化工股份有限公司 | The closed Anticreep packer of hydraulic cylinder-type |
| CN104806193A (en) * | 2015-05-08 | 2015-07-29 | 中国海洋石油总公司 | Packer |
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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 |
Granted publication date: 20150415 Termination date: 20151120 |
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| EXPY | Termination of patent right or utility model |