CN201502355U - High-temperature resistant thermal recovery packer - Google Patents
High-temperature resistant thermal recovery packer Download PDFInfo
- Publication number
- CN201502355U CN201502355U CN2009202463214U CN200920246321U CN201502355U CN 201502355 U CN201502355 U CN 201502355U CN 2009202463214 U CN2009202463214 U CN 2009202463214U CN 200920246321 U CN200920246321 U CN 200920246321U CN 201502355 U CN201502355 U CN 201502355U
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- glue bucket
- fluid cylinder
- packer
- oil pipe
- tool
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Abstract
The utility model provides a high-temperature resistant thermal recovery packer, which is characterized by comprising an upper joint, a first-stage hydraulic cylinder, a first rubber bucket, a second rubber bucket, a second-stage hydraulic cylinder, a third rubber bucket, a third-stage hydraulic cylinder and a lower joint, wherein the upper joint and the lower joint are respectively connected with an oil pipe in up and down manner; one end of the first-stage hydraulic cylinder is connected with the upper joint; the other end of the first-stage hydraulic cylinder is connected with the first rubber bucket; one end of the third-stage hydraulic cylinder is connected with the lower joint; the other end of the third-stage hydraulic cylinder is connected with the third rubber bucket; the first rubber bucket and the second rubber bucket are closely connected through a check ring; and the second-stage hydraulic cylinder is used for connecting the second rubber bucket and the third rubber bucket. By adding two layers of the rubber buckets with reinforcing functions on the upper side of the third rubber bucket, sealing performance and use efficiency of the thermal recovery packer can be improved.
Description
Technical field
The utility model relates to and is applied to heavy crude heat extraction segmentation completion, solves the thermal packer of the outer packing problem of sleeve pipe in the thick oil horizontal well that needs segmentation transformation or segmentation to annotate 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 well 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, by 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 the subsurface environment complexity, 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 utility model 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.
The utility model content
Main purpose of the present utility model is to solve problems of 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 under the worst hot case of down-hole and work for a long time, and keep good sealing characteristics simultaneously.
The purpose of this utility model is achieved by following technical proposals:
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 described 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 described 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 described the 3rd glue bucket; Closely link to each other by one grade of ring between the described first glue bucket and the second glue bucket; Described secondary fluid cylinder is in order to connect described second glue bucket and the 3rd glue bucket.
What described one-level fluid cylinder and three grades of fluid cylinders adopted is unidirectional fluid cylinder; What described 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 described the 3rd glue bucket is greater than the rubber hardness of the first and second glue buckets.
Also be provided with a setting tool; Described setting tool comprises: oil pipe, constant pressure switch, oil pipe plug and two interior bloat tools of pipe;
Described oil pipe is in order to import highly pressurised liquid in setting tool; Described oil pipe plug is arranged on the tail end of oil pipe, in order to realize the oil pipe sealing; Described constant pressure switch is arranged on this oil pipe; Bloat tool is separately positioned on the constant pressure switch both sides in described 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 is subjected to 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, can make this fluid pressure type bloat tool dilatancy after institute's fluid pressure that charges into surpasses starting pressure in it; This setting tool is arranged in the central tube of described thermal packer; Bloat tool lays respectively at described 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 described pipe.
The beneficial effects of the utility model are:
1, this high temperature resistant thermal recovery packer is provided with the two-layer glue bucket that helps out by 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 resistant thermal recovery packer is by 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 resistant thermal recovery packer;
Fig. 2 is the structural representation of high temperature resistant thermal recovery packer setting tool.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is the structural representation of the designed high temperature resistant thermal recovery packer of the utility model.This is high temperature resistant, and the thermal recovery 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 is high temperature resistant, and the thermal recovery packer is vertical direction in use is placed in the bore hole, and described top connection 1 and lower contact 8 be splicing sleeve up and down 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 described 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 described the 3rd glue bucket 6.Closely link to each other by one grade of ring 9 between the described first glue bucket 3 and the second glue bucket 4.Described secondary fluid cylinder 5 is in order to connect described second glue bucket 4 and the 3rd glue bucket 6.
In the high temperature resistant thermal recovery packer of said structure, the utility model 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 by 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 designed thermal packer of the utility model 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 for a long time in the down-hole.What deserves to be mentioned is that in addition these first and second glue buckets of setting up closely link to each other by 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 is subjected to fluid cylinder to realize packing.And by the deformation rule of rubber material as can be known, 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 designed high temperature resistant thermal recovery packer of the utility model is unidirectional fluid cylinder, and what described 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 utility model 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 big more 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 not same-action 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 in the utility model.
Except apply extruding force by 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 to charge into highly pressurised liquid in thermal packer, 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 utility model, 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 resistant thermal recovery 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.Described oil pipe 21 is in order to import highly pressurised liquid in setting tool.Described oil pipe plug 23 is arranged on the tail end of oil pipe 21, in order to realize the oil pipe sealing.Described 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 described 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 is subjected to 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 described thermal packer.Bloat tool 24 lays respectively at described 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 described 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, does not need to change former construction technology.
In sum, the designed high temperature resistant thermal recovery packer of the utility model at first be provided with by upside at the 3rd glue bucket two-layer high temperature resistant and guarantee the glue bucket of sealing function, 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% by 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 considered as within protection domain of the present utility model.
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 described 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 described 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 described the 3rd glue bucket; Closely link to each other by one grade of ring between the described first glue bucket and the second glue bucket; Described secondary fluid cylinder is in order to connect described 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 described one-level fluid cylinder and three grades of fluid cylinders adopted is unidirectional fluid cylinder; What described 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 described 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; Described setting tool comprises: oil pipe, constant pressure switch, oil pipe plug and two interior bloat tools of pipe;
Described oil pipe is in order to import highly pressurised liquid in setting tool; Described oil pipe plug is arranged on the tail end of oil pipe, in order to realize the oil pipe sealing; Described constant pressure switch is arranged on this oil pipe; Bloat tool is separately positioned on the constant pressure switch both sides in described 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 is subjected to 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, can make this fluid pressure type bloat tool dilatancy after institute's fluid pressure that charges into surpasses starting pressure in it; This setting tool is arranged in the central tube of described thermal packer; Bloat tool lays respectively at described 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 described pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202463214U CN201502355U (en) | 2009-09-29 | 2009-09-29 | High-temperature resistant thermal recovery packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202463214U CN201502355U (en) | 2009-09-29 | 2009-09-29 | High-temperature resistant thermal recovery packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201502355U true CN201502355U (en) | 2010-06-09 |
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ID=42453291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202463214U Expired - Lifetime CN201502355U (en) | 2009-09-29 | 2009-09-29 | High-temperature resistant thermal recovery packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201502355U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699023B (en) * | 2009-09-29 | 2012-06-27 | 安东石油技术（集团）有限公司 | High-temperature-resistant sleeve external packer |
-
2009
- 2009-09-29 CN CN2009202463214U patent/CN201502355U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699023B (en) * | 2009-09-29 | 2012-06-27 | 安东石油技术（集团）有限公司 | High-temperature-resistant sleeve external packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100609 Effective date of abandoning: 20090929 |