CN103670327A - Four-stage compression type packer applicable to high-temperature and high-pressure construction conditions - Google Patents
Four-stage compression type packer applicable to high-temperature and high-pressure construction conditions Download PDFInfo
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- CN103670327A CN103670327A CN201410000684.5A CN201410000684A CN103670327A CN 103670327 A CN103670327 A CN 103670327A CN 201410000684 A CN201410000684 A CN 201410000684A CN 103670327 A CN103670327 A CN 103670327A
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Abstract
The invention discloses a four-stage compression type packer applicable to high-temperature and high-pressure construction conditions, and solves the problem that the existing packer is difficult to meet the construction requirements under the high-temperature and high-pressure condition. The four-stage compression type packer comprises a packer main body provided with a center pipe, a rubber tube, a cylinder sleeve and at least two sealing rings, wherein the rubber tube and the cylinder sleeve are respectively covered outside the center pipe, all sealing rings are respectively arranged in the cylinder sleeve, the four-stage compression type packer also comprises a rubber tube protection mechanism and an auxiliary sealing device, the rubber tube protection mechanism is covered outside the center pipe and is used for ensuring the sealing performance of the rubber tube when the packer is compressed, and the auxiliary sealing device is arranged in the cylinder sleeve and is used for assisting the sealing rings for realizing the complete sealing on the cylinder sleeve under the high-temperature and high-pressure construction condition. The four-stage compression type packer has the advantages that the structure is reasonable, the rubber tube can be protected, in addition, the sealing performance of the rubber tube and the sealing rings can be protected, the high-temperature and high-pressure construction requirements can be met, and in addition, the service life of the packer can be prolonged, so the four-stage compression type packer is suitable for being popularized and applied.
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 HTHP 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 object needs such as oil field dispensing, separate zone stimulation, pressure break, oil production by layer, mechanical pipe water blockoff.
Packing element and sealing ring be as the chief component of packer, and their sealing performance directly has influence on the normal result of use of packer and application life etc., thereby in packer, plays conclusive effect.When packing element bears higher differential pressure in hot environment, packing element shoulder, easily by pressure break, makes packing element seal failure; Can easily there is deformation in sealing ring, can not fill up well the gap between cylinder sleeve and piston, to packer is carried out to effective sealing under HTHP.Above-mentioned two point defects have also caused under high-temperature and high-pressure conditions, and poor poor performance that packer is withstand voltage, can not meet construction requirement, and application life is short.
Therefore, along with the increasing of drilling depth, the gentle operation pressure of well also increases thereupon, and conventional pressure break, well packer cannot meet harsh construction requirement.
Summary of the invention
The object of the present invention is to provide a kind of level Four compression packer being applicable under HTHP execution conditions, mainly solve existing packer and under high-temperature and high-pressure conditions, be difficult to meet the problem of construction requirement.
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 HTHP execution conditions; comprise the packer body that is provided with central tube, packing element, cylinder sleeve and is at least the sealing ring of two; described packing element and cylinder sleeve are all coated on outside central tube; all sealing rings are all arranged in cylinder sleeve; also comprise that to be coated on central tube outer and guarantee the packing element protection mechanism of packing element sealing performance while compressing for packer, and be arranged in cylinder sleeve, for auxiliary seal ring, under HTHP execution conditions, cylinder sleeve carried out to hermetic auxiliary sealing device.
Further, the present invention also comprises and is arranged on packer body, for maintaining the packing element shoulder protection device of packing element protection mechanism protective effect under superhigh-temperature and-pressure condition.
Specifically, described packing element protection mechanism comprise be all coated on central tube outer and with upper packing element and the lower rubber cylinder of packing element close contact; Described upper packing element lays respectively at lower rubber cylinder the both sides that packing element is relative.
Specifically, described auxiliary sealing device comprise be all arranged in cylinder sleeve and with left joint ring and the right joint ring of sealing ring close contact; Described left joint ring lays respectively at right joint ring the both sides that sealing ring is relative.
Specifically, described packing element shoulder protection device comprises the upper tensioner ring being all 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 contacts with lower protection bowl.
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 by HNBR material.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention is reasonable in design, practical, and efficiency is high.
(2) the present invention has set up packing element protection mechanism and auxiliary sealing device on conventional packer basis, and adopt level Four compression type structure, thereby not only can when working, packer provide larger setting power, and can effectively protect packing element and shoulder thereof under high temperature and high pressure environment, guarantee its sealing, auxiliary sealing device can effectively seal cylinder sleeve by fitted seal circle completely, test shows, under HTHP execution conditions, packing element in the present invention does not have to damage substantially, thereby the present invention has not only improved the withstand voltage poor performance of packer, meet the construction requirement under severe rugged environment, and extended application life of packer.
(3) the present invention is also provided with packing element shoulder protection device; it can maintain the protective effect of packing element protection mechanism; solve under superhigh-temperature and-pressure environment because the protective effect of packing element protection mechanism weakens the problem that the outstanding deformation of packing element shoulder occurs; and prevent that packing element is by pressure break; the setting of packing element shoulder protection device; the effect of not only having guaranteed packing element protection mechanism is not weakened, and has greatly improved the bearing capacity of packing element and the effect of sealing, thereby has further extended the application life of packing element yet.
(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; the temperature resistance compressive property that this has also improved packing element greatly, for example, construction requirement under the high pressure that can reach a high temperature (180 ℃, 70MPa) environment.
(5) upper packing element, packing element and the lower rubber cylinder in the present invention is preferably all hydrogenated nitrile-butadiene rubber by HNBR() material makes; because hydrogenated nitrile-butadiene rubber combination property is outstanding; have that good heat-resisting, high strength, height are torn, high-wear resistance; thereby it can make packing element and the high temperature resistant measuring body performance of protection mechanism thereof be further improved; make it to adapt to completely the requirement of construction environment, thereby optimized further the overall performance of packer.
(6) cost performance of the present invention is high, cheap for manufacturing cost, is suitable for oil well oil recovery aspect and applies.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the postrotational enlarged diagram in A place in Fig. 1.
Fig. 3 is the enlarged diagram that in Fig. 1, B place sealing ring is connected with auxiliary sealing device.
Wherein, the component name that Reference numeral is corresponding is called:
1-packer body, 2-top connection, the upper tensioner ring of 3-, the upper protection bowl of 4-; the upper packing element of 5-, 6-packing element, 7-central tube, 8-lower rubber cylinder; protection bowl under 9-, tensioner ring under 10-, 11-cylinder sleeve; the left joint ring of 12-, 13-sealing ring, the right joint 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.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described, 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 the same with existing packer, mainly by top connection 2, packing element 6, central tube 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 be at least the sealing ring 13 of two and form, as shown in Figure 1.When press at the center that applies, level Four piston is gone up pushes compression packing element 6 simultaneously, realizes settingly, and owing to there is no locking mechanism, therefore, after pressure release, under the screen resilience effect of packing element 6, packer can be realized automatic deblocking.
Described packing element 6 seals it while compressing for packer, guarantees the withstand voltage poor performance of packer under hot environment.When described packing element protection mechanism compresses for packer, guarantee the sealing performance of packing element, this packing element protection mechanism comprise be all coated on central tube 7 outer and with upper packing element 5 and the lower rubber cylinder 8 of packing element close contact; Described upper packing element 5 lays respectively at lower rubber cylinder 8 both sides that packing element 6 is relative.Under the effect increasing gradually in setting power, for further improving the sealing performance of packing element 6, and the protective effect of upper packing element 5 and lower rubber cylinder 8, described upper packing element 5, packing element 6 and lower rubber cylinder 8 are made by HNBR material.
In addition, the present invention is also provided with packing element shoulder protection device, for maintaining the protective effect of packing element protection mechanism, and improve further the bearing capacity of packing element 6 and guarantee the sealing performance of packing element 6, thereby make packer under superhigh temperature, high-voltage construction condition, still have good high temperature resistant compressive property, this packing element shoulder protection device comprises the upper tensioner ring 3 being all 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 ends, 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 ends, and 10 of described lower tensioner rings contact with lower protection bowl 9.Described upper tensioner ring 3 and lower tensioner ring 10 structures, size are identical, and described upper protection bowl 4 and lower protection bowl 9 structures, size are identical, and upper tensioner ring 3, upper protection bowls 4, lower tensioner ring 10 and lower protection bowls 9 is all made of copper.Packing element 6 is when sealing packer; upper packing element 5 and lower rubber cylinder 8 can be out of shape gradually along with the increase of setting power; then to packing element 6, particularly packing element 6 shoulders play a protective role, and make packer under high temperature, high-voltage construction condition, still can keep good withstand voltage poor performance.But in superhigh temperature, under condition of high voltage, the sealing performance of packing element 6 and upper packing element 5, the protective effect meeting of lower rubber cylinder 8 weakens gradually, therefore at packing element 6 shoulders, be squeezed when force deformation magnifies, upper tensioner ring 3, upper protection bowl 4, lower tensioner ring 10 and lower protection bowl 9 can open greatly and automatically because of the change of the power that is squeezed, and adapt to the distortion of packing element 6 shoulders, then its deformation is carried out firmly, thereby continue to maintain packing element 5, the protective effect of 8 pairs of packing elements 6 of lower rubber cylinder, prevent that packing element 6 shoulders are because distortion is excessive and by pressure break, packing element 6 still can be sealed packer well under high-temperature and high-pressure conditions, so that the workability of packer still can meet construction requirement.
In addition, under high-temperature and high-pressure conditions, cylinder sleeve 11 is only sealed and cannot be reached packer integral sealing and require by conventional sealing ring 13, therefore, for improving the sealing performance of sealing ring 13, the present invention is provided with auxiliary sealing device, for 13 pairs of cylinder sleeves 11 of auxiliary seal ring, seals completely.Specifically, this auxiliary sealing device comprise be all arranged in cylinder sleeve 11 and with left joint ring 12 and the right joint ring 14 of sealing ring close contact; Described left joint ring 12 lays respectively at right joint ring 14 both sides that sealing ring 13 is relative.Under acting in high temperature and high pressure, can there is deformation in sealing ring 13, and when deformation occurs sealing ring 13, left joint ring 12 and right joint ring 14 also can be out of shape along with the distortion of sealing ring 13, and in the seamless gap being filled between cylinder sleeve 11 and piston at different levels, thereby guarantee that sealing ring 13 for example, still can seal completely packer under HTHP (180 ℃, 70MPa) execution conditions.
The present invention is that the special execution conditions for HTHP design, and it has good withstand voltage poor performance, can meet the application requirements to packer under HTHP execution conditions.
According to above-described embodiment, just can realize well the present invention.What deserves to be explained is; under prerequisite based on said structure design, for solving same technical problem, even if some that make in the present invention are without substantial change or polishing; the essence of the technical scheme adopting is still consistent with the present invention, also should be in protection scope of the present invention.
Claims (7)
1. the level Four compression packer being applicable under HTHP execution conditions, comprise and be provided with central tube (7), packing element (6), cylinder sleeve (11) and be at least the packer body (1) of the sealing ring (13) of two, described packing element (6) and cylinder sleeve (11) are all coated on outside central tube (7), all sealing rings (13) are all arranged in cylinder sleeve (11), it is characterized in that, also comprise the packing element protection mechanism that is coated on outside central tube (7) and guarantees packing element sealing performance while compressing for packer, and be arranged in cylinder sleeve (11), for auxiliary seal ring (13), under HTHP execution conditions, cylinder sleeve has been carried out to hermetic auxiliary sealing device.
2. a kind of level Four compression packer being applicable under HTHP execution conditions according to claim 1; it is characterized in that, also comprise and being arranged on packer body (1), for maintaining the packing element shoulder protection device of packing element protection mechanism protective effect under superhigh-temperature and-pressure condition.
3. a kind of level Four compression packer being applicable under HTHP execution conditions according to claim 2, it is characterized in that, described packing element protection mechanism comprise be all coated on central tube (7) outer and with upper packing element (5) and the lower rubber cylinder (8) of packing element close contact; Described upper packing element (5) lays respectively at lower rubber cylinder (8) both sides that packing element is relative.
4. a kind of level Four compression packer being applicable under HTHP execution conditions according to claim 3, it is characterized in that, described auxiliary sealing device comprise be all arranged in cylinder sleeve (11) and with left joint ring (12) and the right joint ring (14) of sealing ring close contact; Described left joint ring (12) lays respectively at right joint ring (14) both sides that sealing ring is relative.
5. a kind of level Four compression packer being applicable under HTHP execution conditions according to claim 4, it is characterized in that, described packing element shoulder protection device comprises the upper tensioner ring (3) being all 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); Described lower protection bowl (9) is arranged on lower rubber cylinder (8) end, and described lower tensioner ring (10) contacts with lower protection bowl (9).
6. a kind of level Four compression packer being applicable under HTHP execution conditions according to claim 5, is characterized 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.
7. according to a kind of level Four compression packer being applicable under HTHP execution conditions described in claim 3～6 any one, it is characterized 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 |
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| 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 true CN103670327A (en) | 2014-03-26 |
| CN103670327B CN103670327B (en) | 2016-08-17 |
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Cited By (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 |
Cited By (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 |
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| Publication number | Publication date |
|---|---|
| CN103670327B (en) | 2016-08-17 |
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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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| CP01 | Change in the name or title of a patent holder | ||
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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. |
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