CN103670327B - A kind of level Four compression packer being applicable under High Temperature High Pressure execution conditions - Google Patents
A kind of level Four compression packer being applicable under High Temperature High Pressure execution conditions Download PDFInfo
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- CN103670327B CN103670327B CN201410000684.5A CN201410000684A CN103670327B CN 103670327 B CN103670327 B CN 103670327B CN 201410000684 A CN201410000684 A CN 201410000684A CN 103670327 B CN103670327 B CN 103670327B
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Abstract
The invention discloses a kind of level Four compression packer being applicable under High Temperature High Pressure execution conditions, solve the problem that existing packer is difficult to meet construction requirement under high-temperature and high-pressure conditions.This level Four compression packer; packer body including the sealing ring being provided with central canal, packing element, cylinder sleeve and at least two; described packing element and cylinder sleeve are all coated on outside central canal; all of sealing ring is arranged in cylinder sleeve; also include the packing element protection mechanism being coated on outside central canal and guaranteeing when packer compresses packing element sealing property, and the auxiliary sealing device being arranged in cylinder sleeve, under High Temperature High Pressure execution conditions, cylinder sleeve being fully sealed for auxiliary seal ring.Present configuration is reasonable, it is possible to protection packing element also guarantees the sealing property of packing element and sealing ring, meets High Temperature High Pressure construction requirement, and extends the service life of packer, and therefore, it is suitable to popularization and application.
Description
Technical field
The present invention relates to a kind of packer, specifically, relate to a kind of level Four compression packer being applicable under High Temperature High Pressure execution conditions.
Background technology
Packer is a kind of key tool that oil field well recovers the oil, and is widely used in the several work purpose needs such as oil field dispensing, separate zone stimulation, pressure break, oil production by layer, mechanical pipe water blockoff.
Packing element and sealing ring are as the key component of packer, and their sealing property directly influences normal using effect and the service life etc. of packer, thus plays conclusive effect in packer.When packing element bears higher differential pressure in hot environment, packing element shoulder, easily by pressure break, makes packing element seal failure；Sealing ring can be susceptible to deformation the most at high temperature under high pressure, it is impossible to fills up the gap between cylinder sleeve and piston well, in order to effectively seal packer.Above-mentioned two point defects also result under high-temperature and high-pressure conditions, packer resistance to pressure reduction poor performance, it is impossible to meet construction requirement, and service life is short.
Therefore, along with the increasing of drilling depth, well gentleness operation pressure increases the most therewith, and conventional pressure break, well packer cannot meet harsh construction requirement.
Summary of the invention
It is an object of the invention to provide a kind of level Four compression packer being applicable under High Temperature High Pressure execution conditions, mainly solve the problem that existing packer is difficult to meet construction requirement under high-temperature and high-pressure conditions.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of level Four compression packer being applicable under High Temperature High Pressure execution conditions, including being provided with central canal, packing element, the packer body of the sealing ring of cylinder sleeve and at least two, described packing element and cylinder sleeve are all coated on outside central canal, all of sealing ring is arranged in cylinder sleeve, also include the packing element protection mechanism being coated on outside central canal and guaranteeing when packer compresses packing element sealing property, it is arranged in cylinder sleeve, the auxiliary sealing device under High Temperature High Pressure execution conditions, cylinder sleeve fully sealed for auxiliary seal ring, and be arranged on packer body, the packing element shoulder protection device of packing element protection mechanism protective effect is maintained under the conditions of superhigh-temperature and-pressure；Described packing element protection mechanism includes all being coated on central canal upper packing element that is outer and that be in close contact and lower rubber cylinder with packing element；Described upper packing element lays respectively at the both sides that packing element is relative with lower rubber cylinder；Described packing element shoulder protection device includes the upper tensioner ring being arranged on packer body, upper protection bowl, lower tensioner ring and lower protection bowl；Described upper protection bowl is arranged on packing element end, and described upper tensioner ring contacts with upper protection bowl；Described lower protection bowl is arranged on lower rubber cylinder end, and described lower tensioner ring then contacts with lower protection bowl；Described upper tensioner ring, upper protection bowl, lower tensioner ring and lower protection bowl are used for automatically opening when the power that is squeezed becomes big, to adapt to the deformation of packing element shoulder, and consolidate its deformation, packing element, the lower rubber cylinder protective effect to packing element in maintenance.
Specifically, described auxiliary sealing device includes being arranged in cylinder sleeve and the left sealing ring that is in close contact with sealing ring and right sealing ring；Described left sealing ring lays respectively at, with right sealing ring, the both sides that sealing ring is relative.
As preferably, described upper tensioner ring, upper protection bowl, lower tensioner ring and lower protection bowl are all made of copper.
As preferably, described upper packing element, packing element and lower rubber cylinder are made up of HNBR material.
Compared with prior art, the method have the advantages that
(1) present invention is reasonable in design, practical, and efficiency is high.
(2) present invention is additionally arranged packing element protection mechanism and auxiliary sealing device on the basis of conventional packer, and use level Four compression type structure, thus bigger setting power can not only be provided when packer works, and packing element and shoulder thereof effectively can be protected under high temperature and high pressure environment, guarantee its sealing, cylinder sleeve then effectively can be fully sealed by auxiliary sealing device with fitted seal circle, test shows, under High Temperature High Pressure execution conditions, packing element in the present invention does not the most damage, thus the present invention not only increases the resistance to pressure reduction performance of packer, meet the construction requirement under severe rugged environment, and extend the service life of packer.
(3) present invention is also provided with packing element shoulder protection device; it can maintain the protective effect of packing element protection mechanism; the problem solving to occur packing element shoulder to highlight deformation owing to packing element protection mechanism protective effect weakens under superhigh-temperature and-pressure environment; and prevent packing element by pressure break; the setting of packing element shoulder protection device; the effect not only ensuring packing element protection mechanism is not weakened, and substantially increases the bearing capacity of packing element and the effect of sealing, thus extends the service life of packing element the most further.
(4) the upper tensioner ring in the present invention, upper protection bowl, lower tensioner ring and lower protection bowl are all made of copper; not only there is good plasticity; and anti-shear ability is strong; therefore; this also substantially improves the temperature resistance compressive property of packing element, the construction requirement under the high pressure that can reach a high temperature (such as 180 DEG C, 70MPa) environment.
(5) upper packing element, packing element and the lower rubber cylinder in the present invention is the most preferably by HNBR(i.e. hydrogenated nitrile-butadiene rubber) material makes; owing to hydrogenated nitrile-butadiene rubber combination property is outstanding; there is good heat-resisting, high intensity, high tear, high-wear resistance; thus it can make packing element and the high temperature resistant measuring body performance of protection mechanism thereof be further improved; it is allowed to adapt to completely the requirement of construction environment, thus optimizes the overall performance of packer further.
(6) cost performance of the present invention is high, cheap for manufacturing cost, is suitable for oil well oil recovery aspect popularization and application.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is postrotational enlarged diagram at A in Fig. 1.
Fig. 3 is the enlarged diagram that in Fig. 1, at B, sealing ring is connected with auxiliary sealing device.
Wherein, the parts that reference is corresponding are entitled:
1-packer body, 2-top connection, the upper tensioner ring of 3-, 4-protects bowl; the upper packing element of 5-, 6-packing element, 7-central canal, 8-lower rubber cylinder; bowl, tensioner ring under 10-, 11-cylinder sleeve is protected under 9-; the left sealing ring of 12-, 13-sealing ring, the right sealing ring of 14-; 15-first order piston, 16-second level piston, 17-third level piston; 18-fourth stage piston, 19-shear pin, 20-lower contact.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings, and embodiments of the present invention include but not limited to the following example.
Embodiment
As shown in Figures 1 to 3, the present invention includes packer body 1, packing element protection mechanism and auxiliary sealing device.Described packer body 1 is as existing packer, mainly it is made up of, as shown in Figure 1 the sealing ring 13 of top connection 2, packing element 6, central canal 7, cylinder sleeve 11, first order piston 15, second level piston 16, third level piston 17, fourth stage piston 18, shear pin 19, lower contact 20 and at least two.During the pressure of applying center, level Four piston goes up pushes compression packing element 6 simultaneously, it is achieved setting, and owing to not having locking mechanism, therefore, after pressure release, under the resilience force effect of packing element 6, packer can realize automatically unsealing.
It was sealed when packer compresses by described packing element 6, it is ensured that packer resistance to pressure reduction performance in high temperature environments.Described packing element protection mechanism then guarantees the sealing property of packing element when packer compresses, and this packing element protection mechanism includes all being coated on central canal 7 upper packing element 5 that is outer and that be in close contact and lower rubber cylinder 8 with packing element；Described upper packing element 5 lays respectively at, with lower rubber cylinder 8, the both sides that packing element 6 is relative.Under the effect that setting power is gradually increased, for improving further the sealing property of packing element 6, and upper packing element 5 and the protective effect of lower rubber cylinder 8, described upper packing element 5, packing element 6 and lower rubber cylinder 8 are made by HNBR material.
Additionally; the present invention is also provided with packing element shoulder protection device; for the protective effect maintaining packing element protection mechanism; and improve the bearing capacity of packing element 6 further and guarantee the sealing property of packing element 6; so that packer still has good high temperature resistant compressive property under the conditions of superhigh temperature, high-voltage construction, this packing element shoulder protection device includes the upper tensioner ring 3 being arranged on packer body 1, upper protection bowl 4, lower tensioner ring 10 and lower protection bowl 9；Described upper protection bowl 4 is arranged on packing element 5 end, and described upper tensioner ring 3 contacts with upper protection bowl 4, and described lower protection bowl 9 is arranged on lower rubber cylinder 8 end, and described lower tensioner ring 10 then contacts with lower protection bowl 9.Described upper tensioner ring 3 and lower tensioner ring 10 structure, size are identical, and described upper protection bowl 4 and lower protection bowl 9 structure, size are identical, and upper tensioner ring 3, upper protection bowl 4, lower tensioner ring 10 and lower protection bowl 9 are all made of copper.Packing element 6 is when sealing packer; upper packing element 5 and lower rubber cylinder 8 gradually can deform along with the increase of setting power; then packing element 6, particularly packing element 6 shoulder are played a protective role, make packer remain to keep good resistance to pressure reduction performance under the conditions of high temperature, high-voltage construction.But in superhigh temperature, under condition of high voltage, the sealing property of packing element 6 and upper packing element 5, the protective effect of lower rubber cylinder 8 can gradually weaken, therefore it is squeezed while force deformation magnifies at packing element 6 shoulder, upper tensioner ring 3, upper protection bowl 4, lower tensioner ring 10 and lower protection bowl 9 can be because the change of the power that is squeezed be opened greatly and automatically, and adapt to the deformation of packing element 6 shoulder, then its deformation is consolidated, thus continue to packing element 5, the lower rubber cylinder 8 protective effect to packing element 6, prevent packing element 6 shoulder due to deformation excessive and by pressure break, packing element 6 is made to remain able to well packer be sealed under high-temperature and high-pressure conditions, so that the workability of packer still disclosure satisfy that construction requirement.
In addition, under high-temperature and high-pressure conditions, cylinder sleeve 11 only carries out sealing by conventional sealing ring 13 and is unable to reach packer integral sealing and requires, therefore, for improving the sealing property of sealing ring 13, the present invention is provided with auxiliary sealing device, fully seals cylinder sleeve 11 for auxiliary seal ring 13.Specifically, this auxiliary sealing device includes left sealing ring 12 and the right sealing ring 14 being arranged in cylinder sleeve 11 and being in close contact with sealing ring；Described left sealing ring 12 lays respectively at, with right sealing ring 14, the both sides that sealing ring 13 is relative.While high temperature and high pressure under effect, sealing ring 13 can deform upon, and while sealing ring 13 deforms upon, left sealing ring 12 and right sealing ring 14 deform as well as the deformation of sealing ring 13, and in the seamless gap being filled between cylinder sleeve 11 and piston at different levels, thus ensure that packer still can be fully sealed under High Temperature High Pressure (such as 180 DEG C, 70MPa) execution conditions by sealing ring 13.
The present invention is that the execution conditions particular for High Temperature High Pressure are designed, and it has good resistance to pressure reduction performance, it is possible to meet the application requirement to packer under High Temperature High Pressure execution conditions.
According to above-described embodiment, the present invention just can be realized well.What deserves to be explained is; on the premise of designing based on said structure, for solving same technical problem, even if some made in the present invention are without substantial change or polishing; the essence of the technical scheme used is the most consistent with the present invention, it should also within the scope of the present invention.
Claims (4)
- null1. the level Four compression packer that a kind is applicable under High Temperature High Pressure execution conditions，Including being provided with central canal (7)、Packing element (6)、The packer body (1) of the sealing ring (13) of cylinder sleeve (11) and at least two，Described packing element (6) and cylinder sleeve (11) are all coated on central canal (7) outward，All of sealing ring (13) is arranged in cylinder sleeve (11)，It is characterized in that，Also include that being coated on central canal (7) outward and guarantees the packing element protection mechanism of packing element sealing property when packer compresses，It is arranged in cylinder sleeve (11)、The auxiliary sealing device under High Temperature High Pressure execution conditions, cylinder sleeve fully sealed for auxiliary seal ring (13)，And be arranged on packer body (1)、The packing element shoulder protection device of packing element protection mechanism protective effect is maintained under the conditions of superhigh-temperature and-pressure；Described packing element protection mechanism includes all being coated on upper packing element (5) and the lower rubber cylinder (8) that central canal (7) outward and is in close contact with packing element；Described upper packing element (5) lays respectively at, with lower rubber cylinder (8), the both sides that packing element is relative；Described packing element shoulder protection device includes upper tensioner ring (3), upper protection bowl (4), lower tensioner ring (10) and the lower protection bowl (9) being arranged on packer body (1)；Described upper protection bowl (4) is arranged on packing element (5) end, and described upper tensioner ring (3) contacts with upper protection bowl (4)；Described lower protection bowl (9) is arranged on lower rubber cylinder (8) end, and described lower tensioner ring (10) then contacts with lower protection bowl (9)；Described upper tensioner ring (3), upper protection bowl (4), lower tensioner ring (10) and lower protection bowl (9) are used for automatically opening when the power that is squeezed becomes big; to adapt to the deformation of packing element (6) shoulder; and its deformation is consolidated, packing element (5), the lower rubber cylinder (8) protective effect to packing element (6) in maintenance.
- A kind of level Four compression packer being applicable under High Temperature High Pressure execution conditions the most according to claim 1, it is characterized in that, described auxiliary sealing device includes left sealing ring (12) and the right sealing ring (14) being arranged in cylinder sleeve (11) and being in close contact with sealing ring；Described left sealing ring (12) lays respectively at, with right sealing ring (14), the both sides that sealing ring is relative.
- A kind of level Four compression packer being applicable under High Temperature High Pressure execution conditions the most according to claim 2, it is characterised in that described upper tensioner ring (3), upper protection bowl (4), lower tensioner ring (10) and lower protection bowl (9) are all made of copper.
- 4. according to a kind of level Four compression packer being applicable under High Temperature High Pressure execution conditions described in claims 1 to 3 any one, it is characterised in that described upper packing element (5), packing element (6) and lower rubber cylinder (8) are made by HNBR material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410000684.5A CN103670327B (en) | 2014-01-02 | 2014-01-02 | A kind of level Four compression packer being applicable under High Temperature High Pressure execution conditions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410000684.5A CN103670327B (en) | 2014-01-02 | 2014-01-02 | A kind of level Four compression packer being applicable under High Temperature High Pressure execution conditions |
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| CN103670327A CN103670327A (en) | 2014-03-26 |
| CN103670327B true CN103670327B (en) | 2016-08-17 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138902A (en) * | 2018-09-30 | 2019-01-04 | 大庆丹枫石油技术开发有限公司 | A kind of combined type packer under high temperature and high pressure condition |
| CN109356547A (en) * | 2018-11-30 | 2019-02-19 | 成都托克密封件有限责任公司 | A kind of high-temperature and high-presure resistent small size packer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2467788Y (en) * | 2001-02-13 | 2001-12-26 | 张宝有 | Cleanable well packer |
| CN2643083Y (en) * | 2003-09-19 | 2004-09-22 | 徐州车氏密封有限公司 | F-shaped slip ring type combined sealing |
| CN1789314A (en) * | 2004-12-17 | 2006-06-21 | 上海橡胶制品研究所 | Rubber composition for manufacturing high temperature-resistant compression type packer tubling |
| GB2451767A (en) * | 2007-01-19 | 2009-02-11 | Artificial Lift Co Ltd | A submersible pump, motor and inflatable packer assembly |
| CN101915070A (en) * | 2010-08-23 | 2010-12-15 | 东营市兆鑫工贸有限责任公司 | Expanding open hole packer |
| CN202117618U (en) * | 2011-03-31 | 2012-01-18 | 大庆油田有限责任公司 | High temperature and high pressure resistance open hole hook wall packer |
| CN103046893A (en) * | 2012-12-26 | 2013-04-17 | 安东石油技术（集团）有限公司 | Composite rubber sleeve packer |
| CN203685113U (en) * | 2014-01-02 | 2014-07-02 | 四川省威尔敦化工有限公司 | Four-stage compression packer suitable for high-temperature and high-pressure construction conditions |
-
2014
- 2014-01-02 CN CN201410000684.5A patent/CN103670327B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2467788Y (en) * | 2001-02-13 | 2001-12-26 | 张宝有 | Cleanable well packer |
| CN2643083Y (en) * | 2003-09-19 | 2004-09-22 | 徐州车氏密封有限公司 | F-shaped slip ring type combined sealing |
| CN1789314A (en) * | 2004-12-17 | 2006-06-21 | 上海橡胶制品研究所 | Rubber composition for manufacturing high temperature-resistant compression type packer tubling |
| GB2451767A (en) * | 2007-01-19 | 2009-02-11 | Artificial Lift Co Ltd | A submersible pump, motor and inflatable packer assembly |
| CN101915070A (en) * | 2010-08-23 | 2010-12-15 | 东营市兆鑫工贸有限责任公司 | Expanding open hole packer |
| CN202117618U (en) * | 2011-03-31 | 2012-01-18 | 大庆油田有限责任公司 | High temperature and high pressure resistance open hole hook wall packer |
| CN103046893A (en) * | 2012-12-26 | 2013-04-17 | 安东石油技术（集团）有限公司 | Composite rubber sleeve packer |
| CN203685113U (en) * | 2014-01-02 | 2014-07-02 | 四川省威尔敦化工有限公司 | Four-stage compression packer suitable for high-temperature and high-pressure construction conditions |
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| CN103670327A (en) | 2014-03-26 |
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Address after: 618300 Guanghan, Sichuan, China Town, small town, Fenghuang Village, the association of the three Patentee after: SICHUAN WEWODON CHEMICAL CO.,LTD. Address before: 618300 Guanghan, Sichuan, China Town, small town, Fenghuang Village, the association of the three Patentee before: SICHUAN WELDON CHEMICALS CO.,LTD. |
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Address after: 618000 Community 3, Fenghuang Village, Xiaohan Town, Guanghan City, Deyang City, Sichuan Province Patentee after: Sichuan Weiwodun Petroleum Technology Co.,Ltd. Address before: 618300 group 3, Fenghuang village, Xiaohan Town, Guanghan City, Deyang City, Sichuan Province Patentee before: SICHUAN WEWODON CHEMICAL CO.,LTD. |