CN2653119Y - Lower structure of self-filling self-sealing sleeve - Google Patents
Lower structure of self-filling self-sealing sleeve Download PDFInfo
- Publication number
- CN2653119Y CN2653119Y CN 03279747 CN03279747U CN2653119Y CN 2653119 Y CN2653119 Y CN 2653119Y CN 03279747 CN03279747 CN 03279747 CN 03279747 U CN03279747 U CN 03279747U CN 2653119 Y CN2653119 Y CN 2653119Y
- Authority
- CN
- China
- Prior art keywords
- plug
- self
- rubber plug
- box cupling
- valve
- Prior art date
- 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 - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 12
- 239000004568 cement Substances 0.000 abstract description 14
- 238000005553 drilling Methods 0.000 abstract description 2
- 239000000706 filtrate Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011268 mixed slurry Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000034656 Contusions Diseases 0.000 description 1
- 206010058109 Hangnail Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
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- Coating Apparatus (AREA)
Abstract
The utility model discloses a self-filling self-sealing sleeve lower structure, which mainly comprises a rubber plug and a valve. Is an oil and gas drilling device. The valve moves up and down in a track to control, so that automatic slurry filling can be realized in the casing running process. And the valve is automatically closed after being pressed. The lower end of the rubber plug is provided with a clamp spring and an O-shaped sealing ring, and the positioning, self-locking and sealing functions are generated after the rubber plug is impacted and pressed. This ensures that the cement paste does not reverse. The movable plug on the rubber plug can make the rubber plug deform to automatically increase the sealing capability when the pump pressure rises, so that the cement paste or filtrate is prevented from being held back to generate a true or false cement plug.
Description
Technical field
The utility model relates to oil-gas drilling equipment, particularly a kind of substructure of sleeve pipe.
Background technology
Now with the sleeve pipe substructure two classes are arranged: a class is conventional single current valve, and its valve adopts the steel shape cone sealing of spring top or adopts the nylon ball sealing; Another kind of for having the automatic grouting ability, in case structure that will be self-styled behind the turn on pump.The former does not possess the automatic grouting ability, causes inconvenience to setting of casing, increases the special grouting time of setting of casing midway, influences timeliness and safety.And the seal failure easily under long-time circulating mud condition of the structure of nylon ball.The latter's plug is an a kind of plug that plays isolated water mud and mud effect, when liquid notes pressure is big outside the sleeve pipe, if the again bad meeting of ball-and-seat sealing causes that plug is return, perhaps cement paste is return, cause cement plug or cement paste to pollute, often need to go up the bradawl tool and bore, adopt the back that builds the pressure to coagulate with the mixed slurry of mud, can influence cementing quality again, influence very much timeliness.
Summary of the invention
The purpose of this utility model just provides a kind of from the substructure of irritating self-styled sleeve pipe, with solve existing sleeve pipe outside liquid annotate pressure when big, may cause that plug is return, perhaps cement paste is return, cause cement plug or cement paste to pollute, influence the problem of cementing quality and timeliness with the mixed slurry of mud.
The technical solution of the utility model is: comprise valve assembly, box cupling, plug, plug core, plug is socketed in plug core upper outside, the bottom slip cap of plug core is in the axle center hole of box cupling, the lower end of box cupling is connected with the upper end of the valve tube of described valve assembly, it is characterized in that: be provided with sealing ring and jump ring in the described plug core outside, be provided with the cannelure corresponding with jump ring in described box cupling inboard.
Axle center, top at described plug is provided with moving plug, and this moving plug top is provided with radial flange, in the inboard of plug the scrobicular ring corresponding with this flange is arranged, and insert in the hole at plug core top the bottom of this moving plug.
Advantage of the present utility model is:
1, ball-and-seat adopts steel, and the life-span is reliable.
But 2, ball-and-seat continuous irrigation mud in the setting of casing process, good reliability.
3, jump ring and O-ring seals are arranged under the plug, can not retreat when plug enters the jump ring groove on earth automatically, it is return that O-ring seals guarantees not have cement paste again, can put to press the back to coagulate, and helps improving cementing quality.
4, the triple seal effect that has valve, O shape circle and plug, good reliability.
Description of drawings
Fig. 1 is the structural representation that axially partly cuts open of the present utility model;
Fig. 2 is the left view at A place among Fig. 1.
The specific embodiment
Referring to Fig. 1 and Fig. 2, the utility model comprises valve assembly, box cupling 12, plug 11, plug core 10, plug 11 is socketed in the outside on plug core 10 tops, the bottom slip cap of plug core 10 is in the axle center hole of box cupling 12, and the lower end of box cupling 12 is connected with the upper end of the valve tube 5 of described valve assembly.Be provided with two alternate O RunddichtringOs and jump ring 8 in the outside of described plug core 10, be provided with the cannelure corresponding in described box cupling 12 inboards with jump ring 8.
Axle center, top at described plug 11 is provided with moving plug 13, and the top of this moving plug is provided with radial flange, in the inboard of plug the scrobicular ring corresponding with this flange is arranged, and insert in the hole at plug core 10 tops the bottom of this moving plug.
Described valve assembly comprises the conical surface 7 on guide shoe 1, track tube 2, spring base 3, guide rod 4, valve tube 5, spring 6 and the guide rod, and its structure is a universal architecture.
When setting of casing, the utility model is connected on the casing string lower end, plug core 10 stand-downs.Guide rod 4 is put into the short track in side.The conical surface 7 leaves the inner conical surface of valve tube 5 on this moment guide rod, forms annulus access, advances mud in the setting of casing automatically continuously, needs midway mud grouting in sleeve pipe specially.Descended sleeve pipe, turn on pump because the pressure of slurry flows promotes guide rod 4, makes on the bar conical surface 7 downward, and guide rod 4 will withdraw from the inclined to one side track on the track tube 2, and single current spool guide rod 4 is pushed the conical surface to when termination of pumping, and the top acclivity forms and seals under the effect of spring 6.
After the cementing, drop into plug 11, plug 11 moves down under pressure promotes, and plug 11 separates cement paste and mud, simultaneously the residual water mud on the scraping casing wall.Along with the pipe inside and outside differential pressure changes, the pipe internal pressure is height-low-High variation.When pressure raise, it was downward to produce pressure promotion moving plug 13, at this moment, gives plug 11 1 extra pressures, makes plug 11 produce more large deformation, and this deformation energy better produces sealing function to sleeve pipe.And moving plug 13 can not withdraw from case enter promptly with the cooperation that a hangnail (being flange) arranged between the plug core 10.So, when plug 11 bruising on earth, producing maximum extra pressure, moving plug 13 will enter plug core 11 and locking to greatest extent.Simultaneously, plug core 10 is inserted in the mesopore of box cupling 12, and the jump ring 8 on the plug core 10 can be stuck in the following annular groove of box cupling 12 automatically, and O-ring seals 9 also can produce effective seal in the smooth part of box cupling 12.Bump the back termination of pumping, do not have fluid to flow, the last conical surface 7 of single current spool is under the promotion of spring 6, on move on the slope that withstands on valve tube 5 and produce sealing function, simultaneously and since the pipe outer head of liquid greater than the intraluminal fluid column pressure, more push-tight the ability that sets of single current spool epicone face 7.Guaranteed that like this cement paste can not turn one's coat.Moving plug 13 on the plug 11 can make plug 11 distortion strengthen sealability automatically when pump pressure raises, and prevents to suppress on cement paste or the filtrate and produces true and false cement plug.
Claims (2)
1, a kind of from the substructure of irritating self-styled sleeve pipe, comprise valve assembly, box cupling, plug, plug core, plug is socketed in plug core upper outside, the bottom slip cap of plug core is in the axle center hole of box cupling, the lower end of box cupling is connected with the upper end of the valve tube of described valve assembly, it is characterized in that: be provided with sealing ring and jump ring in the described plug core outside, be provided with the cannelure corresponding with jump ring in described box cupling inboard.
2, according to claim 1 from the substructure of irritating self-styled sleeve pipe, it is characterized in that: the axle center, top at described plug is provided with moving plug, this moving plug top is provided with radial flange, in the inboard of plug the scrobicular ring corresponding with this flange arranged, insert in the hole at plug core top the bottom of this moving plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03279747 CN2653119Y (en) | 2003-09-18 | 2003-09-18 | Lower structure of self-filling self-sealing sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03279747 CN2653119Y (en) | 2003-09-18 | 2003-09-18 | Lower structure of self-filling self-sealing sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2653119Y true CN2653119Y (en) | 2004-11-03 |
Family
ID=34332390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03279747 Expired - Fee Related CN2653119Y (en) | 2003-09-18 | 2003-09-18 | Lower structure of self-filling self-sealing sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2653119Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979821A (en) * | 2010-11-13 | 2011-02-23 | 中国石油集团西部钻探工程有限公司 | Self-locking cementing stopper combination device |
| CN102628346A (en) * | 2012-05-09 | 2012-08-08 | 常熟市石油固井工具有限公司 | Self-filling type flow velocity-regulable float collar-float shoe device |
| CN107701121A (en) * | 2017-11-03 | 2018-02-16 | 中国海洋石油总公司 | Exempt from brill to exempt to drag for solid completion integral tubing string |
-
2003
- 2003-09-18 CN CN 03279747 patent/CN2653119Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979821A (en) * | 2010-11-13 | 2011-02-23 | 中国石油集团西部钻探工程有限公司 | Self-locking cementing stopper combination device |
| CN101979821B (en) * | 2010-11-13 | 2013-11-13 | 中国石油集团西部钻探工程有限公司 | Self-locking cementing stopper combination device |
| CN102628346A (en) * | 2012-05-09 | 2012-08-08 | 常熟市石油固井工具有限公司 | Self-filling type flow velocity-regulable float collar-float shoe device |
| CN107701121A (en) * | 2017-11-03 | 2018-02-16 | 中国海洋石油总公司 | Exempt from brill to exempt to drag for solid completion integral tubing string |
| CN107701121B (en) * | 2017-11-03 | 2019-05-28 | 中国海洋石油集团有限公司 | Exempt to bore and exempts to fish out solid completion integral tubing string |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ZHONGMAN PETROLEUM NATURAL GAS CO., LTD. Free format text: FORMER OWNER: DU XIAORUI Effective date: 20070323 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070323 Address after: 200135 room 1900, 1203 Shangcheng Road, Pudong New Area, Shanghai Patentee after: Shanghai man Oil and Natural Gas Corp Ltd Address before: 457001 headquarters of Zhongyuan oil field, Henan, Puyang Patentee before: Du Xiaorui |
|
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ZHONGMAN OIL WELL DRILLING TECHNOLOGY CO Free format text: FORMER OWNER: SHANGHAI ZHONGMAN PETROLEUM NATURAL GAS CO., LTD. Effective date: 20081107 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081107 Address after: Room 4, building 6819, 38 Chuansha Road, Shanghai, Pudong New Area, China: 201202 Patentee after: Shanghai Zhongman Petroleum Drilling Technology Co., Ltd. Address before: Room 1900, No. 1203 Shangcheng Road, Shanghai, Pudong New Area, China: 200135 Patentee before: Shanghai man Oil and Natural Gas Corp Ltd |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041103 Termination date: 20110918 |