CN204492690U - The anti-jamming thermal recovery centralizer of self-expansion type - Google Patents
The anti-jamming thermal recovery centralizer of self-expansion type Download PDFInfo
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- CN204492690U CN204492690U CN201520159971.0U CN201520159971U CN204492690U CN 204492690 U CN204492690 U CN 204492690U CN 201520159971 U CN201520159971 U CN 201520159971U CN 204492690 U CN204492690 U CN 204492690U
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- centralizer
- thermometal
- main body
- cylinder
- roller
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Abstract
The utility model relates to the anti-jamming thermal recovery centralizer of a kind of self-expansion type.Its technical scheme is: centralizer main body is installed with in sucker rod main body, centralizer body interior cover has thermometal cylinder, roller seat and thermometal cylinder pass through link of boards, roller seat is provided with roller, is connected between gusset with centralizer main body by connecting bolt, and thermometal jacket casing is in centralizer main body, restricted support is overlapped in thermometal cylinder bottom, limit bracket is fixed by lower end cap, and end cap and centralizer main body are threaded connection, and have O-ring seal between centralizer main body and gusset.Beneficial effect is: load and unload simple to operation, roller abrasion resistance is good, not fragile, and due to the existence of thermometal cylinder, in heavy crude heat extraction process, thermometal cylinder temperature raises, and reaches memory deformation temperature, there is memory deformation in thermometal cylinder, can effectively avoid centralizer stuck in insulated tubing.
Description
Technical field
The utility model relates to a kind of petroleum industry device, particularly the anti-jamming thermal recovery centralizer of a kind of self-expansion type.
Background technology
In China oil production process, oil extractor wellhead polish rod sealing quality directly has influence on the work limitation of crude oil yield and oil well, and each oil field of current China has the oil well polished rod eccentric wear phenomenon in more production comparatively serious, brings hidden danger to crude oil production.Sucker rod is up and down in oil pipe, and due to the elastic deformation of sucker rod, bar and tubing wall easily produce friction, sucker rod is easily disconnected de-, oil pumping rod centering device has that pliability is strong, it contacts with tube inner wall, can reduce the friction of bar and pipe, the oil recovery life-span of enhancing oil pumper.Traditional centralizer dismounting difficulty, can not auto-compensation thermal recovery time the temperature caliber that causes expand, and the friction between traditional centralizer limit wall and insulated tubing is sliding friction, and frictional force is comparatively large, repeatedly to move up and down lower easy wear out failure at sucker rod.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, and provide a kind of self-expansion type anti-jamming thermal recovery centralizer, load and unload simple to operation, roller abrasion resistance is good, not fragile, can effectively avoid centralizer stuck in insulated tubing.
Its technical scheme is: comprise centralizer main body, gusset, roller seat, roller, end cap, thermometal cylinder, O-ring seal, connecting bolt, limit bracket, centralizer main body is installed with in sucker rod main body, centralizer body interior cover has thermometal cylinder, roller seat and thermometal cylinder pass through link of boards, roller seat is provided with roller, be connected by connecting bolt between gusset with centralizer main body, thermometal jacket casing is in centralizer main body, restricted support is overlapped in thermometal cylinder bottom, limit bracket is fixed by lower end cap, end cap and centralizer main body are threaded connection, O-ring seal is had between centralizer main body and gusset.
The outer wall of above-mentioned thermometal cylinder is by the multiple roller seat of link of boards.
Above-mentioned thermometal cylinder adopts memory metal alloy to make.
The beneficial effects of the utility model are: load and unload simple to operation, and roller abrasion resistance is good, not fragile, and due to the existence of thermometal cylinder, in heavy crude heat extraction process, thermometal cylinder temperature raises, reach memory deformation temperature, there is memory deformation in thermometal cylinder, gusset stretches out, and roller fits to insulated tubing inwall, when sucker rod goes out well, temperature declines, and thermometal cylinder bounces back, and can effectively avoid centralizer stuck in insulated tubing.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is A-A structural representations of the present utility model;
In upper figure: box cupling 1, sucker rod main body 2, centralizer main body 3, gusset 4, roller seat 5, roller 6, roller draw-in groove 7, end cap 8, screw thread 9, sucker rod screw thread 10, thermometal cylinder 11, O-ring seal 12, connecting bolt 13, limit bracket 14.
Detailed description of the invention
By reference to the accompanying drawings 1 and 2, the utility model will be further described:
The utility model comprises centralizer main body 3, gusset 4, roller seat 5, roller 6, end cap 8, thermometal cylinder 11, O-ring seal 12, connecting bolt 13, limit bracket 14, centralizer main body 3 is installed with in sucker rod main body 2, centralizer main body 3 internal sleeve has thermometal cylinder 11, roller seat 5 is connected by gusset 4 with thermometal cylinder 11, roller seat 5 is provided with roller 6, be connected by connecting bolt 13 between gusset 4 with centralizer main body 3, thermometal cylinder 11 is enclosed within centralizer main body 3, restricted support 14 is overlapped in thermometal cylinder 11 bottom, limit bracket 14 is fixed by lower end cap 8, end cap 8 and centralizer main body 3 are threaded connection, O-ring seal 12 is had between centralizer main body 3 and gusset 4.
Wherein, the outer wall of thermometal cylinder 11 connects multiple roller seat 5 by gusset 4; Above-mentioned thermometal cylinder 11 adopts memory metal alloy to make.
Operating principle of the present utility model is: be mainly used in thick oil thermal extraction, and the roller thermometal cylinder that is displaced through radially regulates, and thermometal cylinder material is memory metal alloy.When mounted, thermometal cylinder is in contraction state, and inwall is fitted in centralizer main body, and in steam injection recovery process, thick oil underground well temperature raises, and the centralizer temperature being operated in down-hole raises, and thermometal cylinder produces memory deformation, and deformation quantity is 4%.Along with the expansion of thermometal cylinder, gusset extends radially together with roller seat, and roller is fitted in insulated tubing inwall.Along with sucker rod pumps, roller is along insulated tubing inwall scroll-up/down.Roller hardness is large, and abrasion resistance is good, can extend the cycle of operation of centralizer down-hole, effectively avoid sucker rod partial wear.When oil well stops production maintenance, viscous crude temperature declines, and thermometal bounces back, and can be extracted out by sucker rod easily, the situation that centralizer is stuck can not occur from insulated tubing.
Claims (2)
1. the anti-jamming thermal recovery centralizer of self-expansion type, it is characterized in that: comprise centralizer main body (3), gusset (4), roller seat (5), roller (6), end cap (8), thermometal cylinder (11), O-ring seal (12), connecting bolt (13), limit bracket (14), centralizer main body (3) is installed with in sucker rod main body (2), centralizer main body (3) internal sleeve has thermometal cylinder (11), roller seat (5) is connected by gusset (4) with thermometal cylinder (11), roller seat (5) is provided with roller (6), be connected by connecting bolt (13) between gusset (4) with centralizer main body (3), thermometal cylinder (11) is enclosed within centralizer main body (3), restricted support (14) is overlapped in thermometal cylinder (11) bottom, limit bracket (14) is fixed by lower end cap (8), end cap (8) and centralizer main body (3) are threaded connection, O-ring seal (12) is had between centralizer main body (3) and gusset (4).
2. the anti-jamming thermal recovery centralizer of self-expansion type according to claim 1, is characterized in that: the outer wall of described thermometal cylinder (11) connects multiple roller seat (5) by gusset (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159971.0U CN204492690U (en) | 2015-03-20 | 2015-03-20 | The anti-jamming thermal recovery centralizer of self-expansion type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159971.0U CN204492690U (en) | 2015-03-20 | 2015-03-20 | The anti-jamming thermal recovery centralizer of self-expansion type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204492690U true CN204492690U (en) | 2015-07-22 |
Family
ID=53572012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520159971.0U Expired - Fee Related CN204492690U (en) | 2015-03-20 | 2015-03-20 | The anti-jamming thermal recovery centralizer of self-expansion type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204492690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984938A (en) * | 2019-12-23 | 2020-04-10 | 中国石油大学(华东) | Novel flow-guiding thermosensitive perforating hole |
-
2015
- 2015-03-20 CN CN201520159971.0U patent/CN204492690U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984938A (en) * | 2019-12-23 | 2020-04-10 | 中国石油大学(华东) | Novel flow-guiding thermosensitive perforating hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20160320 |