CN202031531U - Self-locking type rubber plug and double-sealed self-filling type float collar applying same - Google Patents
Self-locking type rubber plug and double-sealed self-filling type float collar applying same Download PDFInfo
- Publication number
- CN202031531U CN202031531U CN201120134133XU CN201120134133U CN202031531U CN 202031531 U CN202031531 U CN 202031531U CN 201120134133X U CN201120134133X U CN 201120134133XU CN 201120134133 U CN201120134133 U CN 201120134133U CN 202031531 U CN202031531 U CN 202031531U
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- self
- float collar
- double
- sealing
- filling type
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Abstract
The utility model discloses a self-locking type rubber plug and a double-sealed self-filling type float collar applying the same, relating to petroleum tools. The self-locking type rubber plug comprises a plug body (1), and a guide head (2), an annular clamping groove (3) and a sealing section (4) are sequentially arranged at the front part of the plug body (1) from front to back. As for the double-sealed self-filling type float collar, a small-diameter section with the outer diameter which is less than the inner diameter of a housing body (5) is arranged at the upper part of a sealing sleeve (8) of the double-sealed self-filling type float collar, an annular sleeve (11) is sheathed outside the small diameter section, the inner wall of the annular sleeve (11) can be correspondingly matched with the sealing section of the plug body (1), elastic pins (10) which are used for being fixed with the housing body (5) and locking the plug body (1) respectively are arranged on the annular sleeve (11) and the annular sleeve (11) is fixed with the sealing sleeve (8) through a shear pin (9). The double-sealed self-filling type float collar simultaneously has end surface seal and axial seal, thereby greatly improving the sealing reliability; and a pump can be opened at any time for circulation during the operation of running a casing, thereby washing out the accumulation of silt at the lower part, and after the circulation, the automatic filling of slurry is not affected, so that the working efficiency can be greatly improved.
Description
Technical field
The utility model relates to petroleum tool, is specifically related to a kind of self-locking plug and uses its double containment self filling type float collar.
Background technology
At present, the not good shortcoming of self filling type float collar ubiquity sealing effectiveness that is used for oil field operation.This give the oil field well cementing operation bring needn't the repetition operation and bigger man power and material's waste.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of self-locking plug of good sealing effect is provided and uses its double containment self filling type float collar.
Technical solution of the present utility model is: the self-locking plug, comprise that the rear portion is provided with the cock body of guide section, and its front portion of described cock body is provided with seeker, annular slot and seal section from front to back successively, and seal section is with sealing ring.
Double containment self filling type float collar, comprise shell body, spool, valve core case and sealing shroud, described sealing shroud top is provided with the path section of external diameter less than described shell body internal diameter, the path section outside of sealing shroud is with the annular cover, the inwall of annular cover can correspondingly with the seal section of aforesaid cock body cooperate, annular puts to be provided with and is respectively applied for the resilient key that fixes and be used to lock cock body with shell body, the shell body inwall is provided with and is used for the annular slot that cooperates with resilient key, and the annular cover fixes by cutting off with sealing shroud.
Technique effect of the present utility model is: it has end face seal and axial seal simultaneously, has improved the reliability of sealing greatly, can carry out the turn on pump circulation in the casing job at any time, the accumulation of flushing bottom silt, after the circulation, do not influence and pour into mud automatically, can increase work efficiency greatly.
Description of drawings
Fig. 1 is the structure chart of the utility model self-locking plug;
Fig. 2 is the structure chart of the utility model double containment self filling type float collar.
The specific embodiment
As shown in Figure 1, the self-locking plug comprises that the rear portion is provided with the cock body 1 of guide section, and described cock body 1 its front portion is provided with seeker 2, annular slot 3 and seal section 4 from front to back successively, and seal section 4 is with sealing ring.
As shown in Figure 2, double containment self filling type float collar, comprise shell body 5, spool 6, valve core case 7 and sealing shroud 8, sealing shroud 8 is fixing with shell body 5 by cutting off 9, when cutting off 9 pressurizeds when cutting off, sealing shroud 8 moves down and the annular slot 3 by resilient key on it 10 and shell body 5 inwalls enters into sealing state, described sealing shroud 8 tops are provided with the path section of external diameter less than described shell body 5 internal diameters, the path section outside of sealing shroud 8 is with annular cover 11, the inwall of annular cover 11 can correspondingly with the seal section of aforesaid cock body 1 cooperate, annular cover 11 is provided with and is respectively applied for the resilient key 10 that fixes and be used to lock cock body 1 with shell body 5, shell body 5 inwalls are provided with and are used for the annular slot 3 that cooperates with resilient key 10, and annular cover 11 fixes by cutting off 9 with sealing shroud 8.
The self filling type float collar is installed in the upper end of tail pipe, and the lower end is the self filling type float shoe.In the casing job, mud enters in the sleeve pipe by the float collar hole, has saved the operation of artificial mud grouting, realizes trapping continuous operation.In the setting of casing process, can carry out the circulation in the sleeve pipe at any time, with the accumulation of flushing tail pipe silt, and after avoiding casing job to finish, the generation of circulation difficulty does not influence from irritating after each circulation.
This product self filling type float collar is designed to double seal for the safety of well cementation, and the one, the bottom seal head is realized end face seal, the 2nd, the axial seal of self-locking plug makes it reach perfect effect.
Its principle is as follows: behind cemented up, put down the self-locking plug, move to the bottom and enter in the float collar, plug is hampered and boosts, and will cut off 9 and cut off, and the plug head enters in the sealing shroud 8, promotes that it is descending.The annular resilient key 10 that overlaps in 11 entered in the plug annular slot 3 plug was pinned this moment, realized the axial seal on top.The resilient key 10 that while sealing shroud 8 moves to downwards on it enters in the annular slot 3 of shell body 5 bottoms, sealing shroud 8 is pinned, and be pressed in tightly on the sealing bulb, realizes the lower end surface sealing.Thereby reach the double containment state, realize safe and reliable permanent seal.
Claims (2)
1. the self-locking plug comprises that the rear portion is provided with the cock body of guide section (1), it is characterized in that its front portion of described cock body (1) is provided with seeker (2), annular slot (3) and seal section (4) from front to back successively, and seal section (4) is with sealing ring.
2. double containment self filling type float collar, comprise shell body (5), spool (6), valve core case (7) and sealing shroud (8), it is characterized in that, described sealing shroud (8) top is provided with the path section of external diameter less than described shell body (5) internal diameter, the path section outside of sealing shroud (8) is with annular cover (11), the inwall of annular cover (11) can with corresponding cooperation of seal section as the described cock body of claim 1 (1), annular cover (11) is provided with and is respectively applied for the resilient key (10) that same shell body (5) fixed and be used to lock cock body (1), shell body (5) inwall is provided with and is used for the annular slot (3) that cooperates with resilient key (10), and annular cover (11) fixes by cutting off (9) with sealing shroud (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120134133XU CN202031531U (en) | 2011-04-30 | 2011-04-30 | Self-locking type rubber plug and double-sealed self-filling type float collar applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120134133XU CN202031531U (en) | 2011-04-30 | 2011-04-30 | Self-locking type rubber plug and double-sealed self-filling type float collar applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031531U true CN202031531U (en) | 2011-11-09 |
Family
ID=44893833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120134133XU Expired - Fee Related CN202031531U (en) | 2011-04-30 | 2011-04-30 | Self-locking type rubber plug and double-sealed self-filling type float collar applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202031531U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747981A (en) * | 2012-07-25 | 2012-10-24 | 曹双勇 | Self-filling type pumping assembly |
| CN114458231A (en) * | 2022-01-18 | 2022-05-10 | 大庆市天德忠石油科技有限公司 | High-sealing float collar for petroleum drilling and production |
| CN115522891A (en) * | 2022-11-23 | 2022-12-27 | 大庆市宏博晟达石油机械设备有限公司 | Float collar float shoe applied to oil field well cementation construction |
-
2011
- 2011-04-30 CN CN201120134133XU patent/CN202031531U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747981A (en) * | 2012-07-25 | 2012-10-24 | 曹双勇 | Self-filling type pumping assembly |
| CN114458231A (en) * | 2022-01-18 | 2022-05-10 | 大庆市天德忠石油科技有限公司 | High-sealing float collar for petroleum drilling and production |
| CN115522891A (en) * | 2022-11-23 | 2022-12-27 | 大庆市宏博晟达石油机械设备有限公司 | Float collar float shoe applied to oil field well cementation construction |
| CN115522891B (en) * | 2022-11-23 | 2023-02-03 | 大庆市宏博晟达石油机械设备有限公司 | Float collar float shoe applied to oil field well cementation construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20120430 |