CN203257373U - Automatic grouting float collar - Google Patents
Automatic grouting float collar Download PDFInfo
- Publication number
- CN203257373U CN203257373U CN 201320324677 CN201320324677U CN203257373U CN 203257373 U CN203257373 U CN 203257373U CN 201320324677 CN201320324677 CN 201320324677 CN 201320324677 U CN201320324677 U CN 201320324677U CN 203257373 U CN203257373 U CN 203257373U
- Authority
- CN
- China
- Prior art keywords
- float collar
- bearing ring
- retainer ring
- automatic grouting
- valve cover
- 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
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to an automatic grouting float collar. The automatic grouting float collar comprises an outer barrel, a bearing ring, a valve cover and a plastic blocking pipe, wherein two arc convex blocks are arranged in the inner wall of the outer barrel and symmetrically arranged in the inner wall of the outer barrel, the bearing ring is clamped on the arc convex blocks, a through hole in the center of the bearing ring is shaped like a funnel, the upper end of the plastic blocking pipe is inserted into the bearing ring, the valve cover is arranged at the bottom of the bearing ring, one end of the valve cover is connected with the arc convex blocks in a rotary mode through a small shaft, the other end of the valve cover is an upwards protruding hemispheroid, the hemispheroid abuts against the plastic blocking pipe and is matched with a lower end port of the central through hole of the bearing ring, and an upwards inclined spring is installed between the valve cover and the outer barrel. The automatic grouting float collar is simple in structure, good in well cementation quality, can achieve the switchover between self-grouting and reverse sealing, can operate continuously, and reduces failure accidents.
Description
Technical field:
The utility model relates to the instrument that uses in the cementing well operation in the petroleum works, what be specifically related to is the automatic grouting float collar.
Background technology:
Float collar is a key tool of bunch tube and well cementing process, and float collar is contained on the guide shoe, and in the setting of casing process, the back pressure valve of conventional float collar is in closed condition, has played the effect that the intraluminal fluid post is emptied.Be the balance pipe external and internal pressure, will in pipe, pour into mud.The float collar enclosure in the casing and cementing use procedure, find employed automatic grouting float collar structure and processing technology more complicated, and cost is higher, owing to will be inlayed the structures such as sleeve bushing, the float collar internal diameter is less than casing inner diameter, resistance was large when mud passed through, and flow is little, and the float collar weight ratio is heavier.After cementing, oppositely the back pressure sealing performance is unreliable, causes easily cement paste to return in the well, and cement plug is too high, and the fully packing of outside annular space has a strong impact on cementing quality.
Summary of the invention:
The purpose of this utility model provides the automatic grouting float collar, and it is used for solving existing automatic grouting float collar complex structure, the problem that cementing quality is bad.
The technical scheme that its technical problem that solves the utility model adopts is: this automatic grouting float collar is made of urceolus, retainer ring, valve gap, plastics gear pipe, outer tube inner wall is with two arc bumps, two arc bumps are symmetricly set in the outer tube inner wall, retainer ring is stuck on the arc bump, the retainer ring central through hole is funnel-form, and insert in the retainer ring plastics gear pipe upper end; The bottom of retainer ring is provided with valve gap, one end and the arc bump of valve gap are rotationally connected by little axle, the other end of valve gap is for upwards swelling hemispherical body, this hemisphere withstands on the plastics gear pipe, this hemisphere matches with retainer ring central through hole lower port, and acclivitous spring is installed between valve gap and the urceolus.
The utlity model has following beneficial effect:
The utility model is simple in structure, and cementing quality is good, can realize can working continuously from the conversion of filling and reverse sealing, reduces the generation of failure accidents.
Description of drawings
Fig. 1 is structural representation of the present utility model.
1 urceolus, 2 retainer rings, 3 valve gaps, 4 plastics gear pipe, 5 arc bumps, 6 central through holes, 7 springs.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
As shown in Figure 1, this automatic grouting float collar is made of urceolus 1, retainer ring 2, valve gap 3, plastics gear pipe 4, urceolus 1 inwall is with two arc bumps 5, two arc bumps 5 are symmetricly set in urceolus 1 inwall, retainer ring 2 is stuck on the arc bump 5, retainer ring central through hole 6 is funnel-form, and plastics gear pipe 4 upper end jam-packs are in retainer ring 2; The bottom of retainer ring 2 is provided with valve gap 3, one end (valve rod) of valve gap 3 is rotationally connected by little axle with arc bump 5, the other end of valve gap 3 is for upwards swelling hemispherical body, this hemisphere is against on the plastics gear pipe 4, this hemisphere matches with retainer ring central through hole 6 lower port, acclivitous spring 7 is installed between the valve rod of valve gap 3 and the urceolus 1, spring is compressed between valve rod and the urceolus 1, after plastics gear pipe 4 was sprained, valve gap 3 sealed the central through hole 6 of retainer ring under the effect of spring 7.
During the utility model work, upper end and the sleeve pipe of urceolus 1 join, and the lower end of urceolus 1 is connected on the guide shoe of bunch tube bottom.An effect of the present utility model is by automatic grouting so that drilling fluid alleviates the buoyancy of sleeve pipe, and resistance reduces, head of liquid and the mutual balance of annular space head of liquid in the sleeve pipe, thus sleeve pipe is promptly under the lower going-into-well.Another effect of the present utility model is the effect of playing ball-and-seat when valve gap 3 is closed, prevents that cement paste from flowing backward in the sleeve pipe.
In the setting of casing process, mud enters in the sleeve pipe by plastics gear pipe 4 inner ducts, and then finish automatic grouting, when sleeve pipe continues to come downwards to the well appointed part, copper ball is fed in the sleeve pipe, this moment the turn on pump circulating mud, copper ball is constantly descending by the pressure of deadweight and circulating fluid, stop up the outlet (port) of flowing when copper ball comes downwards to plastics gear pipe 4 upper port places, in sleeve pipe, form the pressure of spraining, increase gradually when the cover overpressure until plastics gear pipe 4 is sprained, spring 7 is pressurized no longer, valve gap 3 is upspringed top lifting to central through hole 6 places of retainer ring, and central through hole 6 sealings with retainer ring namely return to the ball-and-seat state.Prepare immediately to inject cement slurry cementing, cement paste is injected into valve gap 3 places by inside pipe casing, effect by pressure so that valve gap 3 open, cement paste by float collar by the annular space that flows to jacket exterior in the sleeve pipe, cement paste constantly rises to the assigned address of engine request, bruising, cement paste injects complete, the annular space pressure of jacket exterior is higher than the cover overpressure, impel float collar again to get back to closed condition, with in the sleeve pipe with the outer packing of sleeve pipe, cement paste can only rest on the outer annular space of sleeve pipe can not flow backward to inside pipe casing, this moment, well cementation finished.
Claims (1)
1. automatic grouting float collar, it is characterized in that: this automatic grouting float collar is made of urceolus (1), retainer ring (2), valve gap (3), plastics gear pipes (4), urceolus (1) inwall is with two arc bumps (5), two arc bumps (5) are symmetricly set in urceolus (1) inwall, retainer ring (2) is stuck on the arc bump (5), retainer ring central through hole (6) is funnel-form, and insert in the retainer ring plastics gear pipes (4) upper end; The bottom of retainer ring (2) is provided with valve gap (3), one end of valve gap (3) and arc bump (5) are rotationally connected by little axle, the other end of valve gap (3) is for upwards swelling hemispherical body, this hemisphere withstands on the plastics gear pipes (4), this hemisphere matches with retainer ring central through hole (6) lower port, between valve gap (3) and the urceolus (1) acclivitous spring (7) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320324677 CN203257373U (en) | 2013-05-30 | 2013-05-30 | Automatic grouting float collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320324677 CN203257373U (en) | 2013-05-30 | 2013-05-30 | Automatic grouting float collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203257373U true CN203257373U (en) | 2013-10-30 |
Family
ID=49469950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320324677 Expired - Fee Related CN203257373U (en) | 2013-05-30 | 2013-05-30 | Automatic grouting float collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203257373U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006734A (en) * | 2021-03-22 | 2021-06-22 | 中国石油天然气集团有限公司 | Ball-throwing type floating ball type self-grouting float collar and continuous uninterrupted casing running method |
-
2013
- 2013-05-30 CN CN 201320324677 patent/CN203257373U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006734A (en) * | 2021-03-22 | 2021-06-22 | 中国石油天然气集团有限公司 | Ball-throwing type floating ball type self-grouting float collar and continuous uninterrupted casing running method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201031662Y (en) | Down-hole controllable type boring tool by-pass valve | |
| CN108119091A (en) | Well cementation and completion pipe string and method | |
| CN204327042U (en) | Cementing plug bruising positioner | |
| CN204754865U (en) | Ball seat bumps and presses seat combination tool for well cementation | |
| CN101949274A (en) | Casing shut-in valve for cementing operation | |
| CN204040997U (en) | From grouting floating hoop float shoe | |
| CN202064887U (en) | Balanced cement plug bumping device | |
| CN202055797U (en) | Whole-course self-filling extruding type floating hoop with rubber plug | |
| CN203257373U (en) | Automatic grouting float collar | |
| CN202914024U (en) | Float collar | |
| CN103527138B (en) | The special float collar float shoe device of horizontal well | |
| CN203756117U (en) | Self-grouting rotational flow float collar | |
| CN204827363U (en) | It closes closed float collar to bump to press | |
| CN108086941A (en) | Selective cementing unit | |
| CN202946101U (en) | Self-closing hole non-drilling type hydraulic pressure classification hoop | |
| CN108119093A (en) | Well cementation casing automatic grouting equipment | |
| CN204782852U (en) | Anti - well washing device is pressed in crowded water injection mud area | |
| CN205047188U (en) | Deblocking packer can be sealed by repeated seat to motion of non - tubular column | |
| CN201024980Y (en) | An oil field well fixing and self irrigation collision assembly | |
| CN201024988Y (en) | An overflow leakage flowing ball base | |
| CN201050329Y (en) | Well mouth pressure testing packer | |
| CN103527139B (en) | Drillable metal casing float collar float shoe device | |
| CN106437546B (en) | A kind of hydraulic-controlled tap for pipe cleaning sand washing process | |
| CN102808604B (en) | Pressure break high pressure packing filling body | |
| CN202544789U (en) | While-drilling jar |
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: 20131030 Termination date: 20140530 |