CN200955371Y - Sleeve-pipe head positive-negative chuck-tile hanger - Google Patents
Sleeve-pipe head positive-negative chuck-tile hanger Download PDFInfo
- Publication number
- CN200955371Y CN200955371Y CN 200620078173 CN200620078173U CN200955371Y CN 200955371 Y CN200955371 Y CN 200955371Y CN 200620078173 CN200620078173 CN 200620078173 CN 200620078173 U CN200620078173 U CN 200620078173U CN 200955371 Y CN200955371 Y CN 200955371Y
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- China
- Prior art keywords
- slips
- positive
- slip
- negative
- liner
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a positive and negative slip liner hanger used in the oil field, which is composed of a slip shell, a positive slip and a negative slip; the positive and negative slip are arranged within the inner chamber of the slip shell, the upper end of the upper slip is higher than the upper end of the slip shell; some fitting hole and connection bolts are arranged on the convex edge of the lower part of the slip shell in order to the connection of the lower part of the liner; the positioning groove of the positive and negative slip and the positioning sliding block is oppositely arranged. Adopting the positive and negative slip, therefore, the utility model is of a good sealing performance, a strong anti-pressure performance and a high reliability, which is very applicable to be a hanger at the lower end of the liner and the surface liner with a rather large hanging diameter, on the one hand, the combination to the surface liner is more tight, on the other hand, the supporting effect is performed, which avoids the liner submerging.
Description
Technical field
The utility model relates to the positive and negative slips hanger of a kind of oil field with the parts, particularly casing head of casing head.
Background technology
Casing head is the indispensable equipment of splicing sleeve and wellhead assembly in oil, the natural gas drilling process.At present, the hanger of casing head is generally axle formula, inverted slips formula and sets formula.Inverted slips formula hanger in use is prone to the not firm phenomenon of obvolvent, and sleeve pipe is play up and down, and sealing performance and security reliability are poor, also the easy damaged sleeve pipe; Axle formula hanger and set the formula hanger, though the more anti-slip-type hanger of sealing performance, withstand voltage properties and functional reliability increases, but for hanging the bigger surface pipe of big caliber, because its structure is limit, in the confined space by the casing head bottom, hanger is difficult to settle, thereby uses inconvenience.
Summary of the invention
For overcoming the deficiencies in the prior art part, the utility model provides a kind of simple in structure, good seal performance, withstand voltage properties is strong, reliability is high positive and negative slips hanger.
The technical scheme that its technical problem that solves the utility model adopts is: it comprises slips housing, positive slips and anti-slips, and the inner chamber of slips housing is equipped with positive and negative slips, and the upper end of top slips exceeds the upper end of slips housing; Slips lower part of frame flange is provided with several pilot holes and connecting bolt, so that link to each other with the body lower end of casing head.
The positioning runner of positive and negative slips and positioning sliding block are reverse setting.
The beneficial effects of the utility model are: owing to adopted positive and negative slips, thereby its good seal performance, withstand voltage properties is strong, reliability is high, be particularly suitable for lower end hanger as casing head, be used to hang the bigger surface pipe of caliber, can make the obvolvent of surface pipe tightr on the one hand, play a supporting role on the other hand, avoid the phenomenon of the whole sinking of casing head to take place.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation that the utility model and monolithic casing head are used.
Among the figure: 1 is that anti-slips, 2 is that positive slips, 3 is that slips housing, 4 is that pilot hole, 5 is that connecting bolt, 6 is that positioning sliding block, 7 is that positioning runner, 8 is that casing head body, 9 is that axle formula hanger, 10 is that axle formula hanger, 11 is a boss.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1: the utility model mainly comprises slips housing 3, positive slips 2 and anti-slips 1; The inner chamber of slips housing 3 is equipped with the shape and size unanimity but the opposite positive and negative slips 2,1 of slips tooth, and positive slips 2 is following, and anti-slips 1 is last, and the upper end of anti-slips 1 exceeds the upper end of slips housing 3; And the dentation bulge loop in positive and negative slips 2,1 outside places the dentation groove of the intracavity sidewall of slips housing 3; The positioning runner 7 and the positioning sliding block 6 of positive and negative slips 2,1 are reverse setting.The lower flange of slips housing 3 is provided with eight pilot holes 4 and connecting bolt 5, so that link to each other with casing head body 8 lower ends.
As shown in Figure 2: embodiment is used with the utility model and monolithic casing head and is example.The utility model is loaded on the lower end of monolithic casing head body 8 by connecting bolt 5.On the inner chamber of monolithic casing head body 8, the middle part is provided with axle formula hanger 9,10, constitutes the two-stage suspended structure, is used to hang the less sleeve pipe of caliber; The utility model then is three grades of suspended structures, is used to hang the bigger surface pipe of caliber.When needs hang surface pipe, connecting bolt 5 to be tightened, anti-slips 1 is owing to be subjected to the restriction of the casing head body 8 lower end boss 11 on its top, instead, positive slips 1,2 is to radially shrinking, be that positioning sliding block 6 slides in positioning runner 7, thereby embrace surface pipe, make its suspension.Because the double action of positive and negative slips 2,1 is more firm to the obvolvent of surface pipe, has improved sealing performance and functional reliability.In addition, because the supporting role of positive slips 2 avoids the phenomenon of the whole sinking of casing head to take place.
Claims (2)
1, the positive and negative slips hanger of casing head is characterized in that: comprise slips housing, positive slips and anti-slips; Positive and negative slips places the inner chamber of slips housing, and the upper end of top slips exceeds the upper end of slips housing; Slips lower part of frame flange is provided with several pilot holes and connecting bolt.
2, the positive and negative slips hanger of casing head according to claim 1, it is characterized in that: the positioning runner of positive and negative slips and positioning sliding block are reverse setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620078173 CN200955371Y (en) | 2006-09-11 | 2006-09-11 | Sleeve-pipe head positive-negative chuck-tile hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620078173 CN200955371Y (en) | 2006-09-11 | 2006-09-11 | Sleeve-pipe head positive-negative chuck-tile hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200955371Y true CN200955371Y (en) | 2007-10-03 |
Family
ID=38773955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620078173 Expired - Lifetime CN200955371Y (en) | 2006-09-11 | 2006-09-11 | Sleeve-pipe head positive-negative chuck-tile hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200955371Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199996A (en) * | 2011-04-02 | 2011-09-28 | 建湖县鸿达阀门管件有限公司 | Stand connection method and device thereof |
| CN103114822A (en) * | 2013-03-05 | 2013-05-22 | 南京晨灿机械制造有限公司 | Slip-type casing pipe hanger |
| CN107461160A (en) * | 2017-04-19 | 2017-12-12 | 西南石油大学 | A kind of arc form flexibility slip insert long-life casing head |
-
2006
- 2006-09-11 CN CN 200620078173 patent/CN200955371Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199996A (en) * | 2011-04-02 | 2011-09-28 | 建湖县鸿达阀门管件有限公司 | Stand connection method and device thereof |
| CN102199996B (en) * | 2011-04-02 | 2013-06-19 | 建湖县鸿达阀门管件有限公司 | Stand connection method and device thereof |
| CN103114822A (en) * | 2013-03-05 | 2013-05-22 | 南京晨灿机械制造有限公司 | Slip-type casing pipe hanger |
| CN107461160A (en) * | 2017-04-19 | 2017-12-12 | 西南石油大学 | A kind of arc form flexibility slip insert long-life casing head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071003 |
|
| EXPY | Termination of patent right or utility model |