CN101699023B - High-temperature-resistant sleeve external packer - Google Patents
High-temperature-resistant sleeve external packer Download PDFInfo
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- CN101699023B CN101699023B CN200910235270XA CN200910235270A CN101699023B CN 101699023 B CN101699023 B CN 101699023B CN 200910235270X A CN200910235270X A CN 200910235270XA CN 200910235270 A CN200910235270 A CN 200910235270A CN 101699023 B CN101699023 B CN 101699023B
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- glue bucket
- fluid cylinder
- high temperature
- oil pipe
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Abstract
The invention provides a high-temperature-resistant sleeve external packer, which is characterized in that: the method comprises the following steps: the device comprises an upper joint, a primary hydraulic cylinder, a first rubber barrel, a second rubber barrel, a secondary hydraulic cylinder, a third rubber barrel, a tertiary hydraulic cylinder and a lower joint; the upper joint and the lower joint are respectively connected with an oil pipe from top to bottom: one end of the primary hydraulic cylinder is connected with the upper joint, and the other end of the primary hydraulic cylinder is connected with the first glue barrel; one end of the third-stage hydraulic cylinder is connected with the lower joint, and the other end of the third-stage hydraulic cylinder is connected with the third rubber barrel; the first rubber barrel and the second rubber barrel are tightly connected through a first retaining ring; the second-stage hydraulic cylinder is used for connecting the second glue barrel and the third glue barrel. This outer packer of high temperature resistant sleeve pipe increases two-layer gluey bucket that plays the additional effect through the upside at the third gluey bucket to improve the sealing performance and the availability factor of thermal recovery packer.
Description
Technical field
The present invention relates to be applied to heavy crude heat extraction segmentation completion, solution needs segmentation transformation or segmentation to annotate the thermal packer of the outer packing problem of sleeve pipe in the thick oil horizontal well of vapour, belongs to the oil exploration equipment technical field.
Background technology
The outer packing problem of thick oil horizontal well selectivity completion and segmentation well-completing process middle sleeve is to perplex completion work person's a great problem always.This mainly is because in thick oil horizontal well selectivity completion and segmentation completion process, need inject the gas of a large amount of HTHPs to the down-hole, thereby so that exploitation is convenient in down-hole viscous crude dilution to be exploited.Therefore, the production efficiency of this kind heavy crude heat extraction mining type depends on the positive confinement that guarantees the underground mining environment, so just can make the high temperature and high pressure gas of injection keep the high temperature and high pressure environment of down-hole effectively.So, whether well become the key issue of this kind mining type in order to the sealing of the external casing packer of realizing the down-hole sealing.
Yet the thermal packer that existing institute generally adopts mainly is the rubber sleeve bucket that is provided with one deck high temperature high voltage resistant, through to the extruding of this layer rubber sleeve bucket, the dilatancy realization sealing to subsurface environment.The subject matter of this implementation is too to rely on the performance of the high temperature high voltage resistant of elastomeric material in this layer rubber sleeve bucket itself.But in actual use, because subsurface environment is complicated, employed rubber sleeve bucket often is difficult to keep for a long time its good sealing characteristics in the existing thermal packer.This problem has had a strong impact on the service efficiency of this thermal packer.
In view of above problem, the present invention has designed a kind of thermal packer of brand new, makes it to adapt in thermal production well to work for a long time, and keeps good sealing characteristics simultaneously.
Summary of the invention
Main purpose of the present invention is to solve the problem that exists in the prior art; Providing a kind of is applied in the heavy crude heat extraction segmentation completion; Solution needs segmentation transformation or segmentation to annotate the thermal packer of the outer packing problem of sleeve pipe in the thick oil horizontal well of vapour; Make it to adapt to work for a long time under the worst hot case of down-hole, and keep good sealing characteristics simultaneously.
The objective of the invention is to be achieved through following technical proposals:
High temperature-resistance external casing packer is characterized in that: comprising: top connection, one-level fluid cylinder, the first glue bucket, the second glue bucket, secondary fluid cylinder, the 3rd glue bucket, three grades of fluid cylinders and lower contact;
Splicing sleeve about said top connection and the lower contact respectively; This one-level fluid cylinder one end links to each other with top connection, and the other end is connected with the said first glue bucket; These three grades of fluid cylinder one ends link to each other with lower contact, and the other end is connected with said the 3rd glue bucket; Closely link to each other through one grade of ring between the said first glue bucket and the second glue bucket; Said secondary fluid cylinder is in order to connect said second glue bucket and the 3rd glue bucket.
What said one-level fluid cylinder and three grades of fluid cylinders adopted is unidirectional fluid cylinder; What said secondary fluid cylinder adopted is two-way fluid cylinder; The fixed end of this one-level fluid cylinder links to each other with top connection, and movable end links to each other with the first glue bucket; The fixed end of these three grades of fluid cylinders links to each other with lower contact, and movable end links to each other with the 3rd glue bucket.
The rubber hardness of said the 3rd glue bucket is greater than the rubber hardness of the first and second glue buckets.
Also be provided with a setting tool; Said setting tool comprises: oil pipe, constant pressure switch, oil pipe plug and two interior bloat tools of pipe;
Said oil pipe is in order to import highly pressurised liquid in setting tool; Said oil pipe plug is arranged on the tail end of oil pipe, in order to realize the oil pipe sealing; Said constant pressure switch is arranged on this oil pipe; Bloat tool is separately positioned on the constant pressure switch both sides in said two pipes; This constant pressure switch be one according to the switching device that pressure carries out switch control is set, when its pressure that receives is then opened valve during greater than setting pressure, otherwise its valve will be in closed condition; Bloat tool is a fluid pressure type bloat tool in this pipe, after institute's fluid pressure that charges into surpasses starting pressure in it, can make this fluid pressure type bloat tool dilatancy; This setting tool is arranged in the central tube of said thermal packer; Bloat tool lays respectively at said top connection and lower contact place in these two pipes, and this constant pressure switch is arranged in the thermal packer; The starting pressure of bloat tool is less than the setting pressure of this constant pressure switch in the said pipe.
The invention has the beneficial effects as follows:
1, this high temperature-resistance external casing packer is provided with the two-layer glue bucket that helps out through the upside at the 3rd glue bucket, with sealing performance that improves thermal packer and the life-span that prolongs rubber.
2, this high temperature-resistance external casing packer is through ingenious design and application to setting tool in it; Improve the flexibility that this thermal packer uses; Setting tool does not belong to former pipe string; Can be deep to any assigned address down, guarantee the packer envelope that can expand cmpletely, can realize process operations such as segmentation thermal recovery.
Description of drawings
Fig. 1 is the structural representation of high temperature-resistance external casing packer;
Fig. 2 is the structural representation of high temperature-resistance external casing packer setting tool.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Fig. 1 is the structural representation of the high temperature-resistance external casing packer that the present invention designed.This high temperature-resistance external casing packer comprises: top connection 1, one-level fluid cylinder 2, the first glue bucket 3, the second glue bucket 4, secondary fluid cylinder 5, the 3rd glue bucket 6, three grades of fluid cylinders 7 and lower contacts 8.
As shown in the figure, this high temperature-resistance external casing packer is vertical direction in use and is placed in the bore hole, splicing sleeve about said top connection 1 and the lower contact 8 respectively.These one-level fluid cylinder 2 one ends link to each other with top connection 1, and the other end is connected with the said first glue bucket 3.These three grades of fluid cylinder 7 one ends link to each other with lower contact 8, and the other end is connected with said the 3rd glue bucket 6.Closely link to each other through one grade of ring 9 between the said first glue bucket 3 and the second glue bucket 4.Said secondary fluid cylinder 5 is in order to connect said second glue bucket 4 and the 3rd glue bucket 6.
In the high temperature-resistance external casing packer of said structure; The present invention not only is provided with the 3rd glue bucket 6 that is equivalent to glue bucket in traditional thermal packer in order to realize the packing to bore hole, also is provided with the first glue bucket 3 and the second glue bucket, the 4 two-layer glue buckets of close proximity above it.Play and assist the 3rd glue bucket 6 to play complete packing and resistant to elevated temperatures effect through setting up the first glue bucket 3 and the second glue bucket, 4 two-layer glue buckets.
In use, the first glue bucket 3, the second glue bucket 4 and 6 three layers of glue bucket of the 3rd glue bucket produce deformation under the impetus of each fluid cylinder, realize the packing effect to bore hole.Realize the structure of packing compared to existing individual layer glue bucket; The thermal packer that the present invention designed is under the situation that the 3rd glue bucket 6 descends because of HTHP effect sealing performance; Still have the first and second glue buckets and realize packing; Thereby guaranteed normally carrying out of thermal recovery operation, also guaranteed the packing effect that this thermal packer can be remained valid in the down-hole for a long time.What deserves to be mentioned is that in addition these first and second glue buckets of setting up closely link to each other through one grade of ring 9, its position is very approaching.Such structure can upwards be leaked by the pressed gas that the 3rd glue bucket leaks envelope in more efficiently obstruct.
Because above-mentioned each glue bucket mainly is to rely on the extruding force distortion that receives fluid cylinder to realize packing.And can know that by the deformation rule of rubber material its deformation under the simultaneously stressed situation in both sides is comparatively obvious.In view of the above, wherein one-level fluid cylinder 2 and three grades of fluid cylinders 7 adopt the high temperature-resistance external casing packer that the present invention designed is unidirectional fluid cylinder, and what said secondary fluid cylinder 5 adopted is two-way fluid cylinder.The fixed end of this one-level fluid cylinder 2 links to each other with top connection 1, and movable end links to each other with the first glue bucket 3.The fixed end of these three grades of fluid cylinders 7 links to each other with lower contact 8, and movable end links to each other with the 3rd glue bucket 6.
From the above, the packing glue bucket of the 3rd glue bucket 6 described in the present invention for playing a major role, and the first glue bucket 3 and the second glue bucket 4 have as further replenishing the 3rd glue bucket 6.Because the physical property of elastomeric material is that bigger its temperature resistance anti-pressure ability of hardness is strong more, but deformation elasticity is poor more; Otherwise more little its temperature resistance anti-pressure ability of hardness is poor more, but deformation elasticity is strong more.In view of this physical characteristic of elastomeric material, and the different effects of aforementioned each glue bucket, so the rubber hardness of the 3rd glue bucket 6 and rubber hardness and the high temperature resistant degree that high temperature resistant degree is greater than the first and second glue buckets among the present invention.
Except apply extruding force through fluid cylinder the barrel-shaped change of glue is realized the packing; Prior art generally also can be provided with setting tool in the central tube of thermal packer, in order in thermal packer, to charge into highly pressurised liquid, promote fluid cylinder and move; Make it apply lateral pressure to the glue bucket, rubber further expands.The structure of traditional setting tool also has similar structure; We fully are applied to the thermal packer that expands with this type of setting tool; This mode of setting can reach the purpose of layering thermal recovery; In different well depth positions, can accurately setting tool be arrived assigned address down, packer is set.
And in the present invention, we have fully used this setting tool and have applied it to and set in the thermal packer.Fig. 2 is the structural representation of this high temperature-resistance external casing packer setting tool.As shown in the figure, this setting tool comprises: oil pipe 21, constant pressure switch 22, oil pipe plug 23 and two interior bloat tools 24 of pipe.Said oil pipe 21 is in order to import highly pressurised liquid in setting tool.Said oil pipe plug 23 is arranged on the tail end of oil pipe 21, in order to realize the oil pipe sealing.Said constant pressure switch 22 is arranged on this oil pipe 21.Bloat tool 24 is separately positioned on constant pressure switch 22 both sides in said two pipes.This constant pressure switch 22 be one according to the switching device that pressure carries out switch control is set, then open the highly pressurised liquid of valve in during greater than a certain setting pressure when its pressure that receives and emit, otherwise its valve will be in closed condition it.Bloat tool 24 is a fluid pressure type bloat tool in this pipe, when institute's fluid pressure that charges in it can make this fluid pressure type bloat tool dilatancy above behind certain starting pressure.This setting tool is arranged in the central tube of said thermal packer.Bloat tool 24 lays respectively at said top connection 1 and lower contact 8 places in these two pipes, and this constant pressure switch 22 is arranged in the thermal packer.The starting pressure of bloat tool 24 is less than the setting pressure of this constant pressure switch 22 in the said pipe.
The setting tool of said structure is in the process of setting, at first by oil pipe charged pressure liquid in it.When fluid pressure greater than pipe in during the starting pressure of bloat tool 24, highly pressurised liquid at first can make its fluid pressure type bloat tool dilatancy, thus the last lower interface of sealing thermal packer makes the interior formation of thermal packer one enclosed environment.When fluid pressure further improved the setting pressure that surpasses constant pressure switch 22, the valve of constant pressure switch 22 was opened, and the highly pressurised liquid that feeds in the oil pipe injects in the thermal packer, thereby realized setting aforementioned each glue bucket.
The benefit of the setting tool of this structure is simple to operate, can be lowered into the exact position at any well depth, sets the back that finishes and proposes, and does not influence former pipe string structure, need not change former construction technology.
In sum, the high temperature-resistance external casing packer that the present invention designed at first is through the upside at the 3rd glue bucket two-layer high temperature resistant and the glue bucket that guarantees sealing function to be set, to improve the sealing performance and the application life of thermal packer.Secondly, also, further improve the sealing of this thermal packer, as long as the well radius variations rate can obtain excellent sealing performance less than 10% through the structure of setting tool in it is transformed.Setting tool establishes one's own system, and stays the well casing string not link to each other with completion, has reliability and accuracy.Can under 275-360 ℃ crude oil, water vapor, reliably work long hours.
Therefore, persons skilled in the art are under above-mentioned design philosophy, and any not creative transformation of being done all should be regarded as within protection scope of the present invention.
Claims (4)
1. high temperature resistant thermal recovery packer is characterized in that: comprising: top connection, one-level fluid cylinder, the first glue bucket, the second glue bucket, secondary fluid cylinder, the 3rd glue bucket, three grades of fluid cylinders and lower contact;
Splicing sleeve about said top connection and the lower contact respectively; This one-level fluid cylinder one end links to each other with top connection, and the other end is connected with the said first glue bucket; These three grades of fluid cylinder one ends link to each other with lower contact, and the other end is connected with said the 3rd glue bucket; Closely link to each other through one grade of ring between the said first glue bucket and the second glue bucket; Said secondary fluid cylinder is in order to connect said second glue bucket and the 3rd glue bucket.
2. high temperature resistant thermal recovery packer as claimed in claim 1 is characterized in that: what said one-level fluid cylinder and three grades of fluid cylinders adopted is unidirectional fluid cylinder; What said secondary fluid cylinder adopted is two-way fluid cylinder; The fixed end of this one-level fluid cylinder links to each other with top connection, and movable end links to each other with the first glue bucket; The fixed end of these three grades of fluid cylinders links to each other with lower contact, and movable end links to each other with the 3rd glue bucket.
3. high temperature resistant thermal recovery packer as claimed in claim 1, it is characterized in that: the rubber hardness of said the 3rd glue bucket is greater than the rubber hardness of the first and second glue buckets.
4. high temperature resistant thermal recovery packer as claimed in claim 1 is characterized in that: also be provided with a setting tool; Said setting tool comprises: oil pipe, constant pressure switch, oil pipe plug and two interior bloat tools of pipe;
Said oil pipe is in order to import highly pressurised liquid in setting tool; Said oil pipe plug is arranged on the tail end of oil pipe, in order to realize the oil pipe sealing; Said constant pressure switch is arranged on this oil pipe; Bloat tool is separately positioned on the constant pressure switch both sides in said two pipes; This constant pressure switch be one according to the switching device that pressure carries out switch control is set, when its pressure that receives is then opened valve during greater than setting pressure, otherwise its valve will be in closed condition; Bloat tool is a fluid pressure type bloat tool in this pipe, after institute's fluid pressure that charges into surpasses starting pressure in it, can make this fluid pressure type bloat tool dilatancy; This setting tool is arranged in the central tube of said high temperature resistant thermal recovery packer; Bloat tool lays respectively at said top connection and lower contact place in these two pipes, and this constant pressure switch is arranged in the high temperature resistant thermal recovery packer; The starting pressure of bloat tool is less than the setting pressure of this constant pressure switch in the said pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910235270XA CN101699023B (en) | 2009-09-29 | 2009-09-29 | High-temperature-resistant sleeve external packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910235270XA CN101699023B (en) | 2009-09-29 | 2009-09-29 | High-temperature-resistant sleeve external packer |
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| CN101699023A CN101699023A (en) | 2010-04-28 |
| CN101699023B true CN101699023B (en) | 2012-06-27 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4552218A (en) * | 1983-09-26 | 1985-11-12 | Baker Oil Tools, Inc. | Unloading injection control valve |
| CN2837504Y (en) * | 2005-11-29 | 2006-11-15 | 中国石油天然气股份有限公司 | Water-isolation oil production packer |
| CN2844421Y (en) * | 2005-11-16 | 2006-12-06 | 辽河石油勘探局 | Special block packer for horizontal well |
| CN200952378Y (en) * | 2006-09-24 | 2007-09-26 | 潘昌德 | High pressure resisting and tight sealing and quick sealing base heat packer |
| CN201068777Y (en) * | 2007-07-05 | 2008-06-04 | 辽河石油勘探局 | Thermal production well liner tube sealing device |
| CN201502355U (en) * | 2009-09-29 | 2010-06-09 | 安东石油技术（集团）有限公司 | High-temperature resistant thermal recovery packer |
-
2009
- 2009-09-29 CN CN200910235270XA patent/CN101699023B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4552218A (en) * | 1983-09-26 | 1985-11-12 | Baker Oil Tools, Inc. | Unloading injection control valve |
| CN2844421Y (en) * | 2005-11-16 | 2006-12-06 | 辽河石油勘探局 | Special block packer for horizontal well |
| CN2837504Y (en) * | 2005-11-29 | 2006-11-15 | 中国石油天然气股份有限公司 | Water-isolation oil production packer |
| CN200952378Y (en) * | 2006-09-24 | 2007-09-26 | 潘昌德 | High pressure resisting and tight sealing and quick sealing base heat packer |
| CN201068777Y (en) * | 2007-07-05 | 2008-06-04 | 辽河石油勘探局 | Thermal production well liner tube sealing device |
| CN201502355U (en) * | 2009-09-29 | 2010-06-09 | 安东石油技术（集团）有限公司 | High-temperature resistant thermal recovery packer |
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| CN101699023A (en) | 2010-04-28 |
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Application publication date: 20100428 Assignee: TIANJIN ANTON PETROLEUM MACHINERY MANUFACTURING CO.,LTD. Assignor: Anton Oilfield Services (Group) Ltd. Contract record no.: 2014990000952 Denomination of invention: High temperature-resistance external casing packer Granted publication date: 20120627 License type: Exclusive License Record date: 20141224 |
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Effective date of registration: 20220510 Address after: 257000 south of Shengli Industrial Park South Road and east of No.3 Road, Dongying City, Shandong Province Patentee after: SHANDONG PRECEDE PETROLEUM TECHNOLOGY CO.,LTD. Address before: 100102, No. 8 Tsui Xi Road, East Lake, Beijing, Chaoyang District Patentee before: ANTON OILFIELD SERVICES (GROUP) Ltd. |
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Effective date of registration: 20221109 Address after: 100102 No.8, pingcui West Road, Chaoyang District, Beijing Patentee after: ANTON OILFIELD SERVICES (GROUP) Ltd. Address before: 257000 south of Shengli Industrial Park South Road and east of No.3 Road, Dongying City, Shandong Province Patentee before: SHANDONG PRECEDE PETROLEUM TECHNOLOGY CO.,LTD. |