CN202273639U - High pressure resistant hydraulic packer - Google Patents
High pressure resistant hydraulic packer Download PDFInfo
- Publication number
- CN202273639U CN202273639U CN2011202899521U CN201120289952U CN202273639U CN 202273639 U CN202273639 U CN 202273639U CN 2011202899521 U CN2011202899521 U CN 2011202899521U CN 201120289952 U CN201120289952 U CN 201120289952U CN 202273639 U CN202273639 U CN 202273639U
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- piston
- central tube
- high pressure
- pressure resistant
- urceolus
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Abstract
The utility model provides a high pressure resistant hydraulic packer, which is high in overpressure resistance and can be mainly applied to the continuous production. The packer mainly comprises an inner central tube, an outer central tube, a hydraulic anchor seat, a piston outer cylinder, an upper piston, a lower piston, three sections of rubber cylinders and slips. The top of the outer central tube extends into a small cavity formed by the hydraulic anchor seat and the inner central tube. The middle-upper parts, the middle-lower parts and the lower parts of the inner central tube and the outer central tube are orderly sheathed with the piston outer cylinder, the rubber cylinders and the slips positioned at corresponding positions. The upper piston and the lower piston are arranged inside a cavity formed between the lower end of the piston outer cylinder and the outer central tube. The tail part of the upper piston and the top part of the lower piston are partially overlapped with each other. The hydraulic packer adopting the above structure is able to withstand an internal and external differential pressure of at least 70MPa.
Description
Technical field
The utility model relates to a kind of hydraulic packer, relates in particular to the high pressure resistant hydraulic pressure separator that uses in a kind of oil exploitation.
Background technology
In the oil exploitation, conventional hydraulic packing such as RH, FH etc. are withstand voltage all to have only 7500PSI.Because bearing capacity is not high enough, carry out perforation in carbonate reservoir and Sandstone Gas Reservoir and join in the constructions such as making reservoir reconstruction, there is the low problem of construction success rate.And some high voltage bearing packers mostly are permanent type hydraulic pressure completion packers at present, like packers such as SAB-3, MHR, though voltage endurance capability is high, are not suitable for continuous production.
And the anti-interior crushing strength of some the recyclable separator piston of hydraulic pressure urceolus commonly used is on the low side, and (52MPa), therefore after the oil pipe internal pressure surpasses 52MPa, the bulging distortion will take place the piston urceolus, and seal failure between the piston.In low seepage well acid fracturing construction, because stratum permeability is relatively poor, operation pressure is too high in the acid fracturing construction directly explodes packer, trips out inspection and finds that the piston urceolus has the bulging phenomenon.Explained that thus the anti-interior pressure energy power of piston urceolus is low.
Therefore, how to improve the anti-interior pressure energy power of piston urceolus, the inside and outside differential pressure of 70MPa is the technical problem that those skilled in the art need to be resolved hurrily to make it can bear at least.
Summary of the invention
The purpose of the utility model is to provide a kind of voltage endurance capability to reach the high pressure resistant hydraulic packer of 10000PSI.
In order to reach the high-voltage resistance capability that withstand voltage is 10000PSI; The utility model provides a kind of high pressure resistant recyclable separator of following structure; Simple, the described high pressure resistant hydraulic pressure separator of the utility model mainly is made up of inner central tube, exterior central tube, ball toothholder, piston urceolus, upper piston, lower piston and three joint packing elements and slips.Wherein, the top of inner central tube is provided with top connection, and top is arranged with the ball toothholder, and middle and upper part, middle and lower part, bottom are arranged with an exterior central tube, and extend in the areola of goal toothholder and inner central tube formation on the top of said exterior central tube; Said exterior central tube and inner central tube middle and upper part, middle and lower part, bottom corresponding position are arranged with piston urceolus, packing element and slips successively; Be provided with upper piston and lower piston in the cavity that forms between described piston urceolus lower end and the exterior central tube, said upper piston afterbody and lower piston top section are overlapping, and the afterbody of said lower piston (27) is resisted against on the first segment of said three joint packing elements.
Further; Said top connection has central through hole; The top of inner central tube and top connection are directly through the external screw thread on inner central tube top and the screw-internal thread fit of top connection afterbody; Also for having the tubular structure of central through hole, the internal thread of said ball toothholder central through hole upper end and the external screw thread of top connection lower end cooperatively interact said ball toothholder;
Further, extend in the cavity of goal toothholder afterbody and inner central tube formation on said exterior central tube top, and be sealed and matched through first sealing ring with the ball toothholder;
Further, said piston urceolus is a pipe box shape structure, and its central through hole upper diameter is little; Direct and exterior central tube passes through threaded engagement, and through the sealing of second sealing ring, the diameter of its central through hole bottom is big; And form ladder between the central upper portion through hole, form cavity between said centre bore bottom and the exterior central tube, inner as aforementioned; Be provided with upper piston and lower piston, centre bore lower cavity place and upper piston are through the sealing of the 3rd sealing ring in the said piston urceolus;
Further, seal through sealing ring between said upper piston and the exterior central tube;
Further, said upper piston and the partly overlapping position of said lower piston are through 23 sealings of the 5th sealing ring;
Further, said three joint packing elements are sheathed successively, and the hardness of the packing element in the middle of wherein being positioned at is different from the hardness of the packing element that is positioned at two ends.
The course of work of the said high pressure resistant hydraulic packer of the utility model that underdraws below, it relies on hydraulic base sealed purely, but one or more is together in the lower going-into-well.Be particularly suitable in the unsuitable inclined shaft that is lowered to of mechanical block envelope and cable block sealed packer.Need not during base sealed packer to move oil pipe, this just makes this well be in the state of easy control always.Two or more packer can be by seat envelope successively or according to the order of design seat envelope successively.High pressure resistant hydraulic packer deblocking mode is simple, only needs the upper lifting pipe post to get final product deblocking.
Adopted the described high pressure resistant poor hydraulic packer of technique scheme,, made resistance to compression difference ability obtain large increase because it is rational in infrastructure; Thereby avoided the distortion of piston urceolus generation bulging; And then, reduced the replacing number of times of packer, prolonged the application life of piston urceolus.
Description of drawings
Fig. 1 is the cross-sectional view of hydraulic packer of the prior art
Fig. 2 is that the utility model is with respect to the improved partial schematic diagram of the weakness of said prior art hydraulic packer.
The specific embodiment
For the utility model architectural feature and technique effect better are described, the concrete structure characteristics and the resistance to compression difference ability of a specific embodiment of the utility model are done an introduction in detail below in conjunction with accompanying drawing and Reference numeral:
Fig. 1 is the simple structure sketch map of the said high pressure resistant poor hydraulic packer of the utility model, Fig. 2 for voltage endurance capability be improved the part local enlarged diagram.Can know that by Fig. 1 the described high pressure resistant hydraulic packer of present embodiment consists predominantly of, top connection 2, inner central tube 8, exterior central tube 17, ball toothholder 5, piston urceolus 18, upper piston 22, lower piston 27 and three joint packing element (29,31,33) and slips 35.Wherein, said inner central tube 8 is a hollow tubular body, and its central passage is used for the circulation of hydraulic oil; This inner central tube 8 has top, top, middle and upper part, middle and lower part and bottom; Said top is provided with top connection 2; Said top connection 2 equally also has central through hole; The upper end of said top connection 2 central through holes has screw thread, and in order to being connected with other equipment or another one packer, top connection 2 central through hole lower ends also have screw thread and are used for the threaded engagement with the tip exterior of said inner central tube 8; Said ball toothholder 5 leads to tubular body in also being, is sheathed on the top of inner central tube 8, and the top of said ball toothholder 5 central through holes has internal thread, is used for cooperating with the external screw thread of top connection 2 bottoms; Said exterior central tube 17 is slightly larger than the tubular structure of inner central tube 8 external diameters for the central passage internal diameter; It is set in the middle and upper part and the outside, middle and lower part of inner central tube 8; Extend in the areola of goal toothholder 5 afterbodys and inner central tube 8 formation on the top of said exterior central tube 17, and the afterbody of the top of exterior central tube 17 and ball toothholder 5 is sealed and matched through first sealing ring 16; The top of said exterior central tube 17 (promptly corresponding with the middle and upper part of inner central tube 8 position) is arranged with piston urceolus 18; The top of this piston urceolus 18 and exterior central tube 17 threaded engagement; Form cavity between the middle part of this piston urceolus 18 and bottom and the exterior central tube 17; Be provided with upper piston 22 and lower piston 27 in this cavity, the head portion of the bottom of said upper piston 22 and said lower piston 27 is overlapping, and through 23 sealings of the 5th sealing ring; Said upper piston 22 cooperates with the bore seal of piston urceolus 18 through the 3rd sealing ring 20, and said upper piston 22 is sealed and matched with exterior central tube 17 through the 4th sealing ring 21; Said three packing elements (29,31,33) are sheathed successively and inner central tube middle and lower part and bottom with slips.
Further, the described packer of this utility model also includes a plurality of shear pins 26, and said shear pin is arranged at the bottom of piston urceolus 18, and in the piston wall that extends into lower piston 27 that does not run through.
Again because, local location shown in Figure 2 is the pressure-bearing sensitive part, in order to improve withstand voltage poor ability further, the utility model can further be embodied as:
1, the external diameter of this exterior central tube 17 is embodied as 85.73mm, and the wall thickness of this exterior central tube 17 is 4.76mm, and after exterior central tube had adopted the diameter and thickness of this numerical value, bearing capacity brought up to 11,914PSI;
2, the cylinder sleeve inner chamber interior diameter of cylinder sleeve piston urceolus 18 is embodied as 130.2mm down, and wall thickness is for being embodied as 8.19mm; When the cylinder sleeve inner chamber interior diameter of cylinder sleeve piston urceolus 18 was embodied as 130.2mm instantly, its bearing capacity had brought up to 12,116PSI.
3, first sealing ring 16 is embodied as model 2-237, and the 3rd sealing ring 20 is embodied as model 2-351, and the 5th sealing ring 23 is embodied as model 2-244.
4, the seat envelope piston area of packer is reduced to 10.78in2 by 11.8in2, and minimum setting force is by 2, and 000PSI brings up to 2,200PSI.
Adopted the described high pressure resistant recyclable packer of present embodiment; Because exterior central tube and piston urceolus weakness not only have combination preferably; And the wall thickness of the two has all obtained thickening; Piston urceolus Theoretical Calculation internal pressure strength can reach 84MPa, has satisfied the requirement of the withstand voltage 70MPa of packer.Through finite element analysis, applying under the interior pressure situation of 70MPa, the piston urceolus after the improvement, in the process of using, its deflection is 2.385E-004m to the maximum, and is positioned at the far-end of piston urceolus, and is far away from piston seal groove position; At near-end, its deflection is very little, and sealing effectiveness is not had influence, and the safety factor of piston urceolus has reached designing requirement greater than 1.
The above only is the preferred practical range and the mode of this practicality; Should be understood that; For the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model principle, bear the different difference of force value as required; Can also make some modification and improvement, these also should be regarded as belonging to the protection domain of the utility model.
Claims (6)
1. high pressure resistant poor hydraulic pressure separator; Mainly constitute by inner central tube (8), exterior central tube (17), ball toothholder (5), piston urceolus (18), upper piston (22), lower piston (27) and three joint packing elements (29,31,33) and slips (35); It is characterized in that; The top of said inner central tube (8) is provided with top connection (2); Its top is arranged with ball toothholder (5), and its middle and upper part, middle and lower part, bottom are arranged with an exterior central tube (17), and extend in the areola of goal toothholder (5) and inner central tube (8) formation on the top of said exterior central tube (17); Said exterior central tube (17) is arranged with piston urceolus (18), three joint packing element and slips (35) successively with inner central tube (8) middle and upper part, middle and lower part, bottom corresponding position; Be provided with upper piston (22) and lower piston (27) in the cavity that forms between described piston urceolus (18) lower end and the exterior central tube (17); Said upper piston (22) afterbody and lower piston (27) top section are overlapping, and the afterbody of said lower piston (27) is resisted against on the first segment of said three joint packing elements.
2. high pressure resistant poor hydraulic packer as claimed in claim 1 is characterized in that, this exterior central tube (17) external diameter is 85.73mm, and wall thickness is 4.76mm.
3. high pressure resistant poor hydraulic packer as claimed in claim 1 is characterized in that the interior diameter of the cylinder sleeve inner chamber of said piston urceolus (18) is embodied as 130.2mm, and wall thickness is 8.19mm.
4. high pressure resistant poor hydraulic packer as claimed in claim 1; It is characterized in that; Extend in the cavity of goal toothholder (5) afterbody and inner central tube (8) formation on said exterior central tube (17) top, and and ball toothholder (5) between be sealed and matched through first sealing ring (16).
5. high pressure resistant poor hydraulic packer as claimed in claim 1 is characterized in that, seals through the 3rd sealing ring (20) between centre bore lower cavity place and the upper piston (22) in the said piston urceolus.
6. high pressure resistant poor hydraulic packer as claimed in claim 1 is characterized in that, said upper piston (22) seals through the 5th sealing ring (23) with the partly overlapping position of said lower piston (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202899521U CN202273639U (en) | 2011-08-08 | 2011-08-08 | High pressure resistant hydraulic packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202899521U CN202273639U (en) | 2011-08-08 | 2011-08-08 | High pressure resistant hydraulic packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202273639U true CN202273639U (en) | 2012-06-13 |
Family
ID=46194003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202899521U Expired - Fee Related CN202273639U (en) | 2011-08-08 | 2011-08-08 | High pressure resistant hydraulic packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202273639U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790547A (en) * | 2014-02-11 | 2014-05-14 | 中国石油集团西部钻探工程有限公司 | Suspended packer device |
| CN104389548A (en) * | 2014-11-19 | 2015-03-04 | 江苏省金峰石油机械制造有限公司 | High temperature and high pressure resistance tubing packer |
| CN104695892A (en) * | 2013-12-09 | 2015-06-10 | 中国石油化工股份有限公司 | Independent hydraulic control compression packer |
-
2011
- 2011-08-08 CN CN2011202899521U patent/CN202273639U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695892A (en) * | 2013-12-09 | 2015-06-10 | 中国石油化工股份有限公司 | Independent hydraulic control compression packer |
| CN104695892B (en) * | 2013-12-09 | 2019-07-05 | 中国石油化工股份有限公司 | A kind of independent hydraulically-controlled type compression packer |
| CN103790547A (en) * | 2014-02-11 | 2014-05-14 | 中国石油集团西部钻探工程有限公司 | Suspended packer device |
| CN103790547B (en) * | 2014-02-11 | 2016-06-22 | 中国石油集团西部钻探工程有限公司 | hanging packer device |
| CN104389548A (en) * | 2014-11-19 | 2015-03-04 | 江苏省金峰石油机械制造有限公司 | High temperature and high pressure resistance tubing 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: 20120613 Termination date: 20150808 |
|
| EXPY | Termination of patent right or utility model |