CN203867517U - Well cementation slurry blocking device - Google Patents
Well cementation slurry blocking device Download PDFInfo
- Publication number
- CN203867517U CN203867517U CN201420228218.8U CN201420228218U CN203867517U CN 203867517 U CN203867517 U CN 203867517U CN 201420228218 U CN201420228218 U CN 201420228218U CN 203867517 U CN203867517 U CN 203867517U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- steel core
- plug
- well cementation
- main body
- 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 - Lifetime
Links
- 230000000903 blocking effect Effects 0.000 title claims abstract description 7
- 239000002002 slurry Substances 0.000 title abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000004568 cement Substances 0.000 abstract description 8
- 239000003129 oil well Substances 0.000 abstract description 7
- 238000005553 drilling Methods 0.000 abstract description 5
- 238000004073 vulcanization Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 208000034656 Contusions Diseases 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 promote plug 2 Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
Abstract
A well cementation slurry blocking device comprises a casing pipe, a rubber plug, a steel core, a lock tongue, a valve seat and a main body; the lock tongue is installed on the valve seat transversely; the valve seat is connected inside the main body; the upper portion of the main body is connected below a casing pipe; a rubber plug and the steel core are formed into a whole through vulcanization; the rubber plug and the steel core are arranged inside the casing pipe; the lower portion diameter of the steel core is equal to the internal diameter of the valve seat; the steel core is provided with a lock groove; the steel core is inserted inside the valve seat and accordingly the valve seat is block and then the lock tongue enters the lock groove; a channel of the valve seat is blocked due to the fact that the steel core is locked on the valve seat and accordingly one sealing is formed, the rubber plug is arranged inside the casing pipe and accordingly the other sealing is formed, the double-sealing device can prevent well cementation slurry flowing backwards to the casing pipe from the lower portion of the valve seat to form into a cement plug, and accordingly the well cementation work is achieved successfully. The well cementation slurry blocking device has the advantages of avoiding plug drilling operation, guaranteeing the well cementation quality, enabling an oil well to produce normally after well cementation and having remarkable economic benefits.
Description
technical field:
The equipment that when the utility model is oil drilling, completion is used is a kind of well cementation mud blocking device.
background technology:
Cementing plug is after cemented up slurry, cementing plug is pressed in sleeve pipe, then replace cement paste operation, cementing plug plays the effect of isolated water mud and drilling fluid, in addition when cementing plug replaces to float collar place, due to the sealing function of plug, produce bruising phenomenon, indicate the end of cementing operation.The float collar that is connected to sleeve pipe bottom is one-way valve structures, and object is to flow backwards back in sleeve pipe for avoiding well cementing operation to finish rear cement paste.Unicity due to cementing plug and float collar function, float collar does not play the effect of single current, there is the insecure problem of float collar one way valve sealing performance, cause well cementing operation to finish rear section mud flows backwards back in sleeve pipe under the High Pressure of shaft bottom, and plug is upwards passed, make the well section that plug is passed form cement plug, this section of cement plug all seals oil reservoir, oil well can not be produced, and need to again this section of cement plug brill be opened to oil well and could go into operation.Therefore, the single current structure of depending at present float collar formation alone is unreliable, increase and bore plug operation, makes completion practice complicated, and drilling cost is increased, and also can affect cementing quality and oil well production, even can cause oil well to scrap, generation heavy economic losses.
summary of the invention:
The purpose of this utility model is to design a kind of well cementation mud blocking device, and the mud that prevents from cementing the well flows back in sleeve pipe and forms cement plug, and well completion work is completed smoothly, reduces drilling cost, improves cementing quality, and assurance oil well is normally produced.
The purpose of this utility model is achieved in that and comprises sleeve pipe, plug, steel core, dead bolt, valve seat, main body, dead bolt is laterally arranged on valve seat, valve seat is connected in main body, the top of main body is connected under sleeve pipe, plug and steel core are sulfided into one, plug, steel core is placed in sleeve pipe, the lower diameter of steel core equates with the internal diameter of valve seat, on steel core, there is locked groove, steel core inserts in valve seat and stops up after valve seat, dead bolt enters in locked groove, sealing ring is installed in the bottom of steel core, gap between sealing steel core and valve seat, between valve seat and main body, lower seal is installed, dead bolt is one-way locking device.
The beneficial effects of the utility model are: steel core has stopped up valve seat passage after being locked on valve seat forms sealing together, plug forms again sealing together in sleeve pipe, the double seal mud that can prevent from cementing the well flows back to from valve seat bottom and in sleeve pipe, forms cement plug, well completion work is completed smoothly, the utility model has avoided boring plug operation, can guarantee cementing quality, after completion, oil well can normally be produced, and has significant economic benefit.
accompanying drawing explanation:
Fig. 1 is the assembling drawing of the utility model embodiment.
the specific embodiment:
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
As shown in Figure 1, embodiment of the present utility model comprises sleeve pipe 1, plug 2, steel core 3, upper sealing ring 4, dead bolt 5, valve seat 6, lower seal 7, main body 8, dead bolt 5 is laterally arranged on valve seat 6, valve seat 6 is connected in main body 8, between valve seat 6 and main body 8, lower seal 7 is installed, for the junction between seal receptacle 6 and main body 8, the top of main body 8 is connected to sleeve pipe 1 time, plug 2 is sulfided into one with steel core 3, steel core 3 can move with plug 2, plug 2, steel core 3 is placed in sleeve pipe 1, the lower diameter of steel core 3 equates with the internal diameter of valve seat 6, on steel core 3, there is locked groove 9, steel core 3 inserts after the interior obstruction valve seat 6 of valve seat 6, dead bolt 5 enters 9 li of locked grooves, dead bolt 5 is one-way locking device, the front end of steel core 3 can pass through dead bolt 5, dead bolt 5 enters the rear steel core 3 of locked groove 9 just can not depart from valve seat 6.Sealing ring 4 is installed in the bottom of steel core 3, the gap between sealing steel core 3 and valve seat 6, and this sealing side, road is in order to strengthen the ponding of steel core 3.
During to sleeve pipe 1 interior slip casting, plug 2 is not put into sleeve pipe 1, after finishing to the interior slip casting of sleeve pipe 1 by plug 2(band steel core 3, upper sealing ring 4) put into sleeve pipe 1, in sleeve pipe 1, squeeze into displacement fluid, promote plug 2, steel core 3, upper sealing ring 4 to descending, the front end of steel core 3 is by dead bolt 5, and it is locked that dead bolt 5 enters the rear steel core 3 of locked groove 9, and steel core 3 just can stop up valve seat 6.
After dead bolt 5 monodirectional lockings, assembling can be with resetting after special tool release when improper.
Claims (1)
1. a well cementation mud blocking device, comprise sleeve pipe (1), plug (2), steel core (3), dead bolt (5), valve seat (6), main body (8), it is characterized in that: dead bolt (5) is laterally arranged on valve seat (6), valve seat (6) is connected in main body (8), the top of main body (8) is connected under sleeve pipe (1), plug (2) is sulfided into one with steel core (3), plug (2), steel core (3) is placed in sleeve pipe (1), the lower diameter of steel core (3) equates with the internal diameter of valve seat (6), on steel core (3), there is locked groove (9), steel core (3) inserts in valve seat (6) and stops up after valve seat (6), it is inner that dead bolt (5) enters locked groove (9), sealing ring (4) is installed in the bottom of steel core (3), gap between sealing steel core (3) and valve seat (6), between valve seat (6) and main body (8), lower seal (7) is installed, dead bolt (5) is one-way locking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420228218.8U CN203867517U (en) | 2014-05-07 | 2014-05-07 | Well cementation slurry blocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420228218.8U CN203867517U (en) | 2014-05-07 | 2014-05-07 | Well cementation slurry blocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867517U true CN203867517U (en) | 2014-10-08 |
Family
ID=51648487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420228218.8U Expired - Lifetime CN203867517U (en) | 2014-05-07 | 2014-05-07 | Well cementation slurry blocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203867517U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779462A (en) * | 2020-08-02 | 2020-10-16 | 濮阳中原三力创高机械设备有限公司 | Floating hoop and rubber plug interlocking device and application method |
| CN116950602A (en) * | 2023-09-12 | 2023-10-27 | 胜利油田渤海固井工程技术有限责任公司 | Double-sealing float collar for well cementation |
-
2014
- 2014-05-07 CN CN201420228218.8U patent/CN203867517U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779462A (en) * | 2020-08-02 | 2020-10-16 | 濮阳中原三力创高机械设备有限公司 | Floating hoop and rubber plug interlocking device and application method |
| CN116950602A (en) * | 2023-09-12 | 2023-10-27 | 胜利油田渤海固井工程技术有限责任公司 | Double-sealing float collar for well cementation |
| CN116950602B (en) * | 2023-09-12 | 2023-11-21 | 胜利油田渤海固井工程技术有限责任公司 | Double-sealing float collar for well cementation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104329073B (en) | Delay-to-open sliding sleeve | |
| CN204729049U (en) | From grouting floating hoop | |
| CN204402451U (en) | A kind of hydraulic control single flow device for the protection of underground double-pipe annular space | |
| CN203867517U (en) | Well cementation slurry blocking device | |
| CN205089284U (en) | Water injection string bottom sand setting single current valve | |
| CN204457580U (en) | Composite packer | |
| CN104563872B (en) | Blockage resisting self-filling-type float collar | |
| CN205298704U (en) | Graded flow guide pressure relief valve | |
| CN104806196A (en) | Casing floating system for horizontal well | |
| CN203961895U (en) | A kind of tie back liner plug | |
| CN204754870U (en) | Sliding sleeve formula cementing tool | |
| CN203742541U (en) | Anti-gas-channeling well cementation guaranteeing device for bottom of well | |
| CN204827363U (en) | It closes closed float collar to bump to press | |
| CN104481491A (en) | Circulation control type casing sliding sleeve closing tool | |
| CN204716202U (en) | Intubate well cementing valve | |
| CN204003391U (en) | Solid plunger sand-proof oil-well pump | |
| CN204283333U (en) | Well cementing impact pressure self-closing valve | |
| CN216110656U (en) | Gravel reverse feeding device for filter arranged in ground leaching production well | |
| CN203285386U (en) | Rapid inflation grouting hole sealing device | |
| CN202273650U (en) | Well cementing valve | |
| CN205955698U (en) | Annotate grey sliding sleeve switch | |
| CN203769690U (en) | Check valve for drilling tool | |
| CN209179741U (en) | Anti-backflow linker | |
| CN203626717U (en) | Drillable type casing float collar float shoe | |
| CN202946106U (en) | Grouting-free forcing type float collar |
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: SINOPEC OILFIELD SERVICE CORPORATION Free format text: FORMER OWNER: SINOPEC GROUP Effective date: 20150209 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100728 CHAOYANG, BEIJING TO: 100029 CHAOYANG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150209 Address after: 100029 Beijing City, Chaoyang District Hui Street No. six twelfth floor Patentee after: SINOPEC OILFIELD SERVICE Corp. Patentee after: YELLOW RIVER DRILLING GENERAL COMPANY, SINOPEC SHENGLI PETROLEUM ENGINEERING CO.,LTD. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: YELLOW RIVER DRILLING GENERAL COMPANY, SINOPEC SHENGLI PETROLEUM ENGINEERING CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |