CN204591195U - A kind of extension hanger - Google Patents
A kind of extension hanger Download PDFInfo
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- CN204591195U CN204591195U CN201520228795.1U CN201520228795U CN204591195U CN 204591195 U CN204591195 U CN 204591195U CN 201520228795 U CN201520228795 U CN 201520228795U CN 204591195 U CN204591195 U CN 204591195U
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- Prior art keywords
- central tube
- assembly
- pipe
- joint
- ejector sleeve
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Abstract
The utility model relates to a kind of extension hanger, comprise central tube, assembly hung by outer ejector sleeve and tail pipe, central tube two ends are separately installed with lift pipe and plug assembly, and central tube is connected by back-off joint with lift pipe, be disposed with tail pipe above central tube and hang assembly and oil pipe, and leave gap between central tube and oil pipe, seal box assembly is provided with above back-off joint, tail pipe is hung assembly one end and is provided with slips sheet, the other end is provided with outer ejector sleeve, throughly between outer ejector sleeve and central tube be provided with pressure chamber, the utility model structure is simple, easy to operate and good stability.
Description
Technical field
The utility model relates in oil, geology completion practice sends into down-hole formation testing completion tool technical field, particularly relates to a kind of extension hanger.
Background technology
Fluid pressure tailpiece hanger is the vitals implementing drilling liner cementing operation in Process of Oil Well Drilling, is also the vitals of casing damaged well implementing suspending small casing recovery technique.Drilling liner cementing technology is not only day by day used widely in old street district (inclined shaft, horizontal well, multi-lateral well), and heavy load casing job is become the operation of twice light load, also more and more applied in deep well cementing, but existing hanger stability is not strong, and in use, cause central tube to block, outer ejector sleeve cannot be moved.
Utility model content
The purpose of this utility model is to provide a kind of extension hanger, solves hanger in prior art stable not, holds susceptible to plugging technical problem;
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
A kind of extension hanger, comprise central tube, outer ejector sleeve and tail pipe and hang assembly, described central tube two ends are separately installed with lift pipe and plug assembly, and described central tube is connected by back-off joint with lift pipe, be disposed with tail pipe above described central tube and hang assembly and oil pipe, and leave gap between central tube and oil pipe, seal box assembly is provided with above described back-off joint, described tail pipe is hung assembly one end and is provided with slips sheet, the other end is provided with outer ejector sleeve, throughly between described outer ejector sleeve and central tube is provided with pressure chamber;
On the basis of technique scheme, the utility model can also do following improvement:
Further, described seal box assembly and back-off joint are disposed with bearing, axle sleeve, spring;
Further, described bearing is thrust roller bearing, adopts the beneficial effect of this step to be ensure that the utility model structure is more stable;
Further, between described seal box assembly and back-off joint, be provided with O type circle, adopt the beneficial effect of this step to be ensure that seal box assembly and back-off joint can seal fixing, prevent part contaminated, affect part time job;
Further, described central tube end has through slot, adopts the beneficial effect of this step to be prevent central tube from blocking, causes hanger to work;
The beneficial effects of the utility model are:
1. the utility model sets up bearing between back-off top connection and seal box assembly, makes back-off more reliable, flexible;
2. the utility model is thrust roller bearing by the bearing adopted, and ensures that structure is more stable;
3. the utility model has through slot by being arranged on end on central tube, ensures that central tube can not result in blockage and the utility model cannot be worked;
4. the utility model structure is simple, easy to operate, and structure is more stable.
Accompanying drawing explanation
Fig. 1 is the sectional structure chart of a kind of extension hanger described in the utility model specific embodiment;
In accompanying drawing, the list of parts representated by each label is as follows:
1, central tube, 2, outer ejector sleeve, 3, tail pipe hangs assembly, 4, lift pipe, 5, plug assembly, 6, back-off joint, 7, oil pipe, 8, seal box assembly, 9, slips sheet, 10, pressure chamber, 11, bearing, 12, axle sleeve, 13, spring, 14, O type circle, 15, through slot.
Detailed description of the invention
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
A kind of extension hanger, comprise central tube 1, outer ejector sleeve 2 and tail pipe and hang assembly 3, described central tube 1 two ends are separately installed with lift pipe 4 and plug assembly 5, and described central tube 1 is connected by back-off joint 6 with lift pipe 4, be disposed with tail pipe above described central tube 1 and hang assembly 3 and oil pipe 7, and leave gap between central tube 1 and oil pipe 7, seal box assembly 8 is provided with above described back-off joint 6, described tail pipe is hung assembly 3 one end and is provided with slips sheet 9, the other end is provided with outer ejector sleeve 2, throughly between described outer ejector sleeve 2 and central tube 1 is provided with pressure chamber 10;
Described seal box assembly 8 is disposed with bearing 11, axle sleeve 12, spring 13 with back-off joint 6, and described bearing 11 is thrust roller bearing, is provided with O type circle 14 between described seal box assembly 8 and back-off joint 6, and described central tube 1 end has through slot 15.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. an extension hanger, comprise central tube, outer ejector sleeve and tail pipe and hang assembly, described central tube two ends are separately installed with lift pipe and plug assembly, and described central tube is connected by back-off joint with lift pipe, be disposed with tail pipe above described central tube and hang assembly and oil pipe, and leave gap between central tube and oil pipe, it is characterized in that, seal box assembly is provided with above described back-off joint, described tail pipe is hung assembly one end and is provided with slips sheet, the other end is provided with outer ejector sleeve, throughly between described outer ejector sleeve and central tube is provided with pressure chamber.
2. a kind of extension hanger according to claim 1, is characterized in that, described seal box assembly and back-off joint are disposed with bearing, axle sleeve, spring.
3. a kind of extension hanger according to claim 2, is characterized in that, described bearing is thrust roller bearing.
4. a kind of extension hanger according to claim 3, is characterized in that, is provided with O type circle between described seal box assembly and back-off joint.
5., according to the arbitrary described a kind of extension hanger of Claims 1-4, it is characterized in that, described central tube end has through slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520228795.1U CN204591195U (en) | 2015-04-15 | 2015-04-15 | A kind of extension hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520228795.1U CN204591195U (en) | 2015-04-15 | 2015-04-15 | A kind of extension hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591195U true CN204591195U (en) | 2015-08-26 |
Family
ID=53927360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520228795.1U Active CN204591195U (en) | 2015-04-15 | 2015-04-15 | A kind of extension hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204591195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458199A (en) * | 2020-11-18 | 2022-05-10 | 中国海洋石油集团有限公司 | Pressure-resistant large-size tail pipe hanging and feeding tool and using method thereof |
-
2015
- 2015-04-15 CN CN201520228795.1U patent/CN204591195U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458199A (en) * | 2020-11-18 | 2022-05-10 | 中国海洋石油集团有限公司 | Pressure-resistant large-size tail pipe hanging and feeding tool and using method thereof |
| CN114458199B (en) * | 2020-11-18 | 2023-10-31 | 中国海洋石油集团有限公司 | Pressure-resistant large-size tail pipe hanging and feeding tool and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Fang Tong Road, Weiyang Economic Development Zone, Yangzhou, Jiangsu Patentee after: Jiangsu Cheng Chuang Intelligent Equipment Co., Ltd. Address before: 225002 Fang Tong Road, Weiyang Economic Development Zone, Yangzhou, Jiangsu Patentee before: YANGZHOU CHENGCHUANG PETROLEUM MACHINERY CO., LTD. |