CN202745799U - Large-diameter self-locking packer - Google Patents
Large-diameter self-locking packer Download PDFInfo
- Publication number
- CN202745799U CN202745799U CN 201220429547 CN201220429547U CN202745799U CN 202745799 U CN202745799 U CN 202745799U CN 201220429547 CN201220429547 CN 201220429547 CN 201220429547 U CN201220429547 U CN 201220429547U CN 202745799 U CN202745799 U CN 202745799U
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- packer
- latus rectum
- self
- locking
- lock tube
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Abstract
The utility model relates to a large-diameter self-locking packer which comprises a central pipe (2), a slide nail (17) integrated with the central pipe (2), a cone (10) distributed on the central pipe (2), and a setting prevention pin (11), wherein the cone (10) is fixed on the central pipe (2) by the setting prevention pin (11); and the internal diameter of the central pipe (2) is identical to that of an upper connection pipe column (20). According to the large-diameter self-locking packer, a large-diameter structure or an equal-diameter structure is formed, so that the packer can be placed at any positions of the pipe column, and the dimensional restrictions of the diameter of an oil well pump, a pumping rod combination and the like due to the fact that the internal diameter of the existing packer is small are eliminated.
Description
Technical field
The utility model relates to the field of packer, be specifically related to large latus rectum Self-locking packer, it is mainly used in oilfield mechanical oil recovery card closedtop water-plugging technology, also can be used for the techniques such as oil well interlayer water blockoff, bottom water blockoff, also can be used for the technological measures such as formation testing by layer, water filling, pressure break, acidifying and sand control.
Background technology
At present, packer product similar with the utility model on market for example has the Y221 type, that is, one-way slip fixes, transfers that tubing string compression sets, the compression packer of upper lifting pipe post deblocking.In addition, the hydraulic differential pressure set packer that also has Y241, Y341, Y541 type hydraulic setting, handling deblocking.Above-mentioned existing packer can satisfy the technology such as oil production by layer, blocking water, pressure break, acidifying and sand control etc. substantially.
Yet, existing packer has following defective: one, because packer construction is complicated, be subjected to the interior latus rectum size of restriction of physical dimension less, latus rectum was between 44 ~ 48mm in packer commonly used was general, and relatively, the diameter of oil pump piston has 44,56,57,70, the 83mm equal-specification, rod collar maximum outside diameter 55mm, therefore, leak in the production at the rod-pumped well card, existing packer can only be placed on the oil well pump bottom, otherwise oil pump piston and rod collar are not crossed the packer location; Two, for Y221 type packer, because employing is transferred tubing string and is set, and easily makes the above tubing string of packer produce serious flexural deformation, very easily causes oil pump piston not advance the pump work cylinder, or cause oil pump piston heavy wear in pump barrel, cause reduce the application life of oil well pump.The serious flexural deformation of tubing string also can cause sucker rod and the aggravation of tubing string eccentric wear, rate and development effectiveness when having had a strong impact on oil recovery, and may cause overhaul to process, bring huge economic loss; Three, Y221 type packer does not possess locking function.In the pumping production process, oil pumper drives rod string and pumps in tubing string, under inertial load and oscillating load effect, up and down wriggling occurs in tubing string, very easily causes packer to lose efficacy, and causes the failure of card envelope purpose, thereby need to repeat operation, increased operating cost.
The utility model content
The applicant considers the above-mentioned situation of prior art and has made the utility model.
According to an aspect of the present utility model, a kind of large latus rectum Self-locking packer is provided, comprise central tube, follow closely, be distributed in the cone on the described central tube, the anti-pin that sets with sliding of described central tube one, it is characterized in that, described cone prevents that by described setting pin is fixed on the described central tube, and the interior latus rectum of described central tube is consistent with the interior latus rectum that top connects tubing string.
According to an aspect of the present utility model, described large latus rectum Self-locking packer also comprises long lock tube and short lock tube, be positioned at the thread consistent size of the thread of clamp ring of described long lock tube and described short lock tube and direction is opposite each other, thereby setting in the process of described large latus rectum Self-locking packer, the thread of described clamp ring and short lock tube progressively reaches the each other state of locking automatically.
According to an aspect of the present utility model, described large latus rectum Self-locking packer also comprises top connection, short lock tube, clamp ring, long lock tube, urceolus, pressure cap, packing element, packing element spacer ring, sets slips, spring, track body, lower contact, J type groove, friction plate, deblocking pin each part mentioned above are distributed on the described central tube.
Advantage of the present utility model:
1, because the improvement on the packer construction, all parts are distributed on the central tube, the interior latus rectum that has formed the packer central tube is consistent with the interior latus rectum that connects up and down tubing string, formed large latus rectum structure or etc. the latus rectum structure, thereby packer can be placed on any position of tubing string, has eliminated the oil well pump footpath that existing packer brings because interior latus rectum is little, the restricted problem of sucker rod combination equidimension.
2, owing to having designed reverse engagement automatic locking structure, namely be fastened on the thread consistent size of the thread of the clamp ring in the long lock tube and short lock tube and opposite direction, when transfer tubing string packing element compression set finish after, clamp ring and short lock tube reverse thread tooth progressively reach locking state automatically, until make packer locked.After tubing string gravity discharged, packer still was in the locked state that sets.Thereby, prevented the packer disabler that is caused by the wriggling that a variety of causes produces.
3, after setting locking, packer gravity discharges the gravity completion, because tubing string can not produce serious bending, so oil pump piston easily enters the pump work cylinder smoothly, job success ratio is high, and the wearing and tearing of rod string and tubing string wall slow down, so the operation period of validity is long, and development index is high.
4, it is designed that this series packer is mainly oil machinery oil recovery card closedtop water-plugging technology, also can be used for the techniques such as oil well interlayer water blockoff, bottom water blockoff.
5, it can not only use separately, can also be used in conjunction with other packer and form the complete complicated technology measures such as formation testing by layer, water filling, pressure break, acidifying and sand control, satisfies all kinds of complicated injection-production technology measure needs.
Description of drawings
Fig. 1 is the schematic appearance according to the large latus rectum Self-locking packer of embodiment of the present utility model.
Fig. 2 is the partial cross section schematic diagram according to the large latus rectum Self-locking packer of embodiment of the present utility model.
The specific embodiment
To by with reference to above-mentioned accompanying drawing, further understand the utility model by following description for embodiment.
Fig. 1 is the schematic appearance according to the large latus rectum Self-locking packer of embodiment of the present utility model, and Fig. 2 is the partial cross section schematic diagram according to the large latus rectum Self-locking packer of embodiment of the present utility model.
See figures.1.and.2, according to the large latus rectum Self-locking packer of embodiment of the present utility model mainly comprise top connection 1, central tube 2, short lock tube 3, clamp ring 4, long lock tube 5, urceolus 6, pressure cap 7, packing element 8, packing element spacer ring 9, cone 10, anti-ly set pin 11, set slips 12, the parts such as spring 13, track body 14, lower contact 15, J type groove 16, sliding nail 17, friction plate 18, deblocking pin 19.
Large latus rectum Self-locking packer according to embodiment of the present utility model is mainly oilfield mechanical oil recovery card closedtop water-plugging technology, slows down the wearing and tearing between sucker rod and tubing string, piston and the oil pumping barrel, improves rate when recovering the oil, and prolongs pump detection period designed.As can be seen from the figure, because the improvement on the packer construction, all parts all distribute (namely, socket or serial connection) on central tube 2, formed packer central tube 2 interior latus rectum and top connection tubing string 20 interior latus rectum the structure of consistent (seeing the architectural feature of packer shown in the drawings).For instance, specification is φ 73mm(external diameter) tubing string, latus rectum is φ 62mm in it, and the interior latus rectum of the central tube 2 of packer also is designed to φ 62mm, therefore form large latus rectum structure (perhaps waiting the latus rectum structure), thereby this packer can be placed on any position of tubing string, has eliminated the oil well pump footpath that existing packer brings because interior latus rectum is little, the restricted problem of sucker rod combination equidimension.
The following describes the working method according to the large latus rectum Self-locking packer of embodiment of the present utility model.
1, set: rotate and transfer simultaneously tubing string 20, drive central tube 2 descending, simultaneously, to set the cone 10 that pin 11 is fixed on the central tube 2 descending with anti-, at this moment, friction plate 18 on the track body relies on elastic force and the interior wall friction of outer sleeve of spring 13, under the effect of frictional force, relatively rotate 45 °, at this moment, sliding nail 17(sliding pin and central tube one on the central tube 2) enter J type groove 16 relative moving upward, be articulated in and set slips 12 when cone 10 is descending on the track body, strutted by cone 10 gradually and firmly fix with sleeve pipe, at this moment, continue to transfer tubing string 20, prevent that setting pin 11 cuts off, tubing string 20 drives top connection 1, top connection 1 drives urceolus 6, urceolus 6 drives 8 expansions of pressure caps 7 compression packing elements, and simultaneously, the each other reverse thread of clamp ring 4 and short lock tube 3 progressively reaches the each other state of locking automatically, until make packer locked, this sets process and finishes.After tubing string 20 gravity discharged, packer still was in the locked state that sets.
2, deblocking: upper lifting pipe post 20, deblocking pin 19 is broken, and at this moment, the power that urceolus 6 supports packing element 8 disappears, and packing element 8 returns set slips 12 and withdraw from cone 10, set slips 12 and regain, and deblocking finishes.
In sum, owing to having designed reverse engagement automatic locking structure, namely be fastened on the thread consistent size of the thread of the clamp ring 4 in the long lock tube 5 and short lock tube 3 and opposite direction (seeing the architectural feature of packer shown in the drawings), when transfer the compression of tubing string 20 packing elements 8 set finish after, clamp ring 4 progressively reaches locking state automatically with short lock tube 3 reverse thread teeth, until make packer locked, make packer be in the state that sets fully.After tubing string 20 gravity discharged, packer still was in the locked state that sets.Thereby, prevented the packer disabler that is caused by the wriggling that a variety of causes produces.When the needs deblocking, as long as upper lifting pipe post 20, packing element 8 with the effect of outer cover tube wall frictional force under relative moving down, deblocking pin 19 is cut off, and gets final product deblocking.
The above is example only to the description of embodiment, and is not intended to limit scope of the present utility model.In sum, those skilled in the art will appreciate that and can make various modifications, modification and replacement to above-described embodiment of the present utility model, it all falls into the protection domain of the present utility model that limits such as claims.
Claims (3)
1. large latus rectum Self-locking packer, comprise central tube (2), follow closely (17) with sliding of described central tube (2) one, be distributed in the cone (10) on the described central tube (2), the anti-pin (11) that sets, it is characterized in that, described cone (10) prevents that by described setting pin (11) is fixed on the described central tube (2), and the interior latus rectum of described central tube (2) is consistent with the interior latus rectum that top connects tubing string (20).
2. large latus rectum Self-locking packer as claimed in claim 1, it is characterized in that, described large latus rectum Self-locking packer also comprises long lock tube (5) and short lock tube (3), be positioned at the thread consistent size of the thread of clamp ring (4) of described long lock tube (5) and described short lock tube (3) and direction is opposite each other, thereby setting in the process of described large latus rectum Self-locking packer, described clamp ring (4) progressively reaches the each other state of locking automatically with the thread of short lock tube (3).
3. large latus rectum Self-locking packer as claimed in claim 1, it is characterized in that, described large latus rectum Self-locking packer also comprises top connection (1), short lock tube (3), clamp ring (4), long lock tube (5), urceolus (6), pressure cap (7), packing element (8), packing element spacer ring (9), sets slips (12), spring (13), track body (14), lower contact (15), J type groove (16), friction plate (18), deblocking pin (19), and each part mentioned above is distributed on the described central tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429547 CN202745799U (en) | 2012-08-27 | 2012-08-27 | Large-diameter self-locking packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429547 CN202745799U (en) | 2012-08-27 | 2012-08-27 | Large-diameter self-locking packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202745799U true CN202745799U (en) | 2013-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220429547 Expired - Fee Related CN202745799U (en) | 2012-08-27 | 2012-08-27 | Large-diameter self-locking packer |
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| Country | Link |
|---|---|
| CN (1) | CN202745799U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522874A (en) * | 2016-12-02 | 2017-03-22 | 淮北矿业（集团）有限责任公司 | Recyclable open hole packer suitable for large-well-deflection drill holes |
| CN106639956A (en) * | 2016-11-29 | 2017-05-10 | 大庆纽斯达采油技术开发有限公司 | Well oil pipe blowout preventer of sucker-rod pump |
-
2012
- 2012-08-27 CN CN 201220429547 patent/CN202745799U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639956A (en) * | 2016-11-29 | 2017-05-10 | 大庆纽斯达采油技术开发有限公司 | Well oil pipe blowout preventer of sucker-rod pump |
| CN106522874A (en) * | 2016-12-02 | 2017-03-22 | 淮北矿业（集团）有限责任公司 | Recyclable open hole packer suitable for large-well-deflection drill holes |
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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: 20130220 Termination date: 20140827 |
|
| EXPY | Termination of patent right or utility model |