CN203022685U - Casing float collar device for cementing - Google Patents
Casing float collar device for cementing Download PDFInfo
- Publication number
- CN203022685U CN203022685U CN2012207470042U CN201220747004U CN203022685U CN 203022685 U CN203022685 U CN 203022685U CN 2012207470042 U CN2012207470042 U CN 2012207470042U CN 201220747004 U CN201220747004 U CN 201220747004U CN 203022685 U CN203022685 U CN 203022685U
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- CN
- China
- Prior art keywords
- valve seat
- float collar
- spool
- box cupling
- coupling
- 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
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Abstract
The utility model relates to a casing float collar device for cementing. The device is characterized in that the device at least comprises a float collar shell, a valve seat, a valve plug and a coupling, which are in excircle-shaped structures; the float collar shell is small in diameter; the coupling is big in diameter; the float collar shell is located in a bucket of the coupling; the bottom of the coupling is muff-coupled with the valve seat; the valve seat and the coupling are sealed by seal rings; a hopper opening is arranged in the middle of the valve seat; the valve plug is movably connected with the valve seat; a flat seal ring pressing cap and a flat seal ring are arranged at the hopper opening of the valve seat from top to bottom in sequence so that the valve plug and the valve seat are sealed; a connecting rod is connected at the upper end of the valve plug and extends out of a through hole of a spring seat at the upper end; and a muff-coupling spring is arranged between the spring seat and the upper end face of the hopper opening. The device has the advantages that the device has reliable sealability and wide application scope, can be suitable for drilling and cementing processes of ultradeep wells, inclined wells and horizontal wells, is a special tool for cementing and is connected between casing connection buckles; and the channel in the casing is closed by the float collar, the float shoe and the valve plug.
Description
Technical field
The utility model relates to a kind of well cementation casing float collar device.
Background technology
This product solved the well cementation of previously used float-ball type with the nylon ball of casing float collar, float shoe in ultradeep well non-refractory, in inclined shaft, horizontal well because its action principle is to work by buoyancy and inside and outside differential pressure, and float collar, float shoe are limited by borehole condition in well can not vertical center to cause nylon ball effectively oppositely not seal to cause the phenomenon that continues to flow.This product is iron spool, high temperature resistant, oppositely sealing is float collar, the float shoe by spring action forced resetting formula, be not subjected to even horizontal well well condition restriction of large hole deviation, spool can set valve seat and seal fully, effectively solve the phenomenon that pressure release continues to flow after inclined shaft, horizontal cementing bruising, avoided staying cement plug.
The utility model content
The purpose of this utility model is to provide a kind of well cementation casing float collar of the drilling well shaft fixing technology for ultradeep well, inclined shaft and horizontal well.
the purpose of this utility model is to realize like this, a kind of well cementation casing float collar device, it is characterized in that: comprise at least the float collar housing, valve seat, spool, box cupling, the float collar housing, valve seat, spool, box cupling is the outer ring structure, the float collar diameter of the housing is little, the box cupling diameter is large, the float collar casing base falls within the drum of box cupling, the box cupling bottom is socketed with valve seat, valve seat and box cupling seal by sealing ring, the funnel opening is arranged in the middle of valve seat, spool and valve seat are flexibly connected, the funnel opening of valve seat has flat sealed circle pressure cap and flat sealed circle from top to bottom successively, make spool and valve base sealing, the spool upper end is connected with connecting rod, connecting rod stretches out upper end spring base via hole, be socketed spring between spring base and funnel open upper end face.
Described flat sealed circle pressure cap and flat sealed circle inner arm and spool outer arm are the V word shape.
Described flat sealed circle pressure cap is crimped on the flat sealed circle.
the utility model has the advantages that: a kind of well cementation casing float collar device, it is characterized in that: comprise at least the float collar housing, valve seat, spool, box cupling, the float collar housing, valve seat, spool, box cupling is the outer ring structure, the float collar diameter of the housing is little, the box cupling diameter is large, the float collar casing base falls within the drum of box cupling, the box cupling bottom is socketed with valve seat, valve seat and box cupling seal by sealing ring, it is reliable that it has sealing performance, wide accommodation, applicable to ultradeep well, in the drilling well shaft fixing technology of inclined shaft and horizontal well, it is a kind of well cementation special tool, be connected between sleeve joint shackle, float collar, the float shoe spool is closed the sleeve pipe internal channel.
Description of drawings
The utility model is described in further detail below in conjunction with the embodiment accompanying drawing:
Fig. 1 is the utility model example structure schematic diagram.
In figure, 1, the float collar housing; 2, connecting rod; 3, valve seat; 4, spool; 5, box cupling; 6, spring; 7, sealing ring; 8, flat sealed circle; 9, flat sealed circle pressure cap; 10, spring base.
The specific embodiment
as shown in Figure 1, a kind of well cementation casing float collar device, at least comprise float collar housing 1, valve seat 3, spool 4, box cupling 5, float collar housing 1, valve seat 3, spool 4, box cupling 5 is the outer ring structure, float collar housing 1 diameter is little, box cupling 5 diameters are large, float collar housing 1 is located in the drum of box cupling 5, box cupling 5 bottoms are socketed with valve seat 3, valve seat 3 seals by sealing ring 7 with box cupling 5, the funnel opening is arranged in the middle of valve seat 3, spool 4 is flexibly connected with valve seat 3, the funnel opening of valve seat 3 has flat sealed circle pressure cap 9 and flat sealed circle 8 from top to bottom successively, make spool 4 and valve seat 3 sealings, spool 4 upper ends are connected with connecting rod 2, connecting rod 2 stretches out upper end spring base 10 via holes, socket spring 6 between spring base 10 and funnel open upper end face.
Be tightly connected in order to make to form between flat sealed circle pressure cap 9 and flat sealed circle 8 and spool 4, flat sealed circle pressure cap 9 and flat sealed circle 8 inner arms and spool 4 outer arms are the V word shape, and flat sealed circle pressure cap 9 is crimped on flat sealed circle 8.
In the setting of casing process, by well head slush balancing sleeve external and internal pressure, after having descended sleeve pipe, turn on pump circulates, pressure-acting bottom spool 4 is opened, outside cement paste blow-off pipe string, absolutely empty of sealing pipe string outer shroud is closed at back pressure and the spring force effect bottom spool of cement paste after well cementation, bear buffer brake, close the sleeve pipe internal channel.
During setting of casing, float shoe is arranged on bunch tube bottom, and float collar is arranged on the bunch tube choke position.During well cementing operation, spool is opened under the pressure-acting of liquid, and after plug went downwards to choke position, spool was got back to initial position under the effect of spring, plays unidirectional choked flow and accurately controls cement plug function of height in sleeve pipe.
The utility model mounting method:
1. float collar uses in bunch tube bottom ,-20 meters left and right, 10 meters, General Requirements interval between float collar, float shoe.
2. when entering well, float collar, the two pincers of float shoe thread requirement link closely, and guarantee bonding strength and the seal request of tool using.
3. in the setting of casing process, mud grouting in sleeve pipe continuously, the amount of pouring into of mud will conform to the sleeve pipe internal volume that enters well, prevents from causing because fluid column pressure reduction inside and outside sleeve pipe is excessive the damage of float collar, float shoe and the complexity of down-hole.
The parts that the present embodiment is not described in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.
Claims (3)
1. well cementation casing float collar device, it is characterized in that: comprise at least float collar housing (1), valve seat (3), spool (4), box cupling (5), float collar housing (1), valve seat (3), spool (4), box cupling (5) is the outer ring structure, float collar housing (1) diameter is little, box cupling (5) diameter is large, float collar housing (1) is located in the drum of box cupling (5), box cupling (5) bottom is socketed with valve seat (3), valve seat (3) seals by sealing ring (7) with box cupling (5), the funnel opening is arranged in the middle of valve seat (3), spool (4) is flexibly connected with valve seat (3), the funnel opening of valve seat (3) has flat sealed circle pressure cap (9) and flat sealed circle (8) from top to bottom successively, make spool (4) and valve seat (3) sealing, spool (4) upper end is connected with connecting rod, connecting rod stretches out upper end spring base (10) via hole, be socketed spring (6) between spring base (10) and funnel open upper end face.
2. a kind of well cementation casing float collar device according to claim 1, it is characterized in that: described flat sealed circle pressure cap (9) and flat sealed circle (8) inner arm and spool (4) outer arm are the V word shape.
3. a kind of well cementation casing float collar device according to claim 1, it is characterized in that: described flat sealed circle pressure cap (9) is crimped on flat sealed circle (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207470042U CN203022685U (en) | 2012-12-31 | 2012-12-31 | Casing float collar device for cementing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207470042U CN203022685U (en) | 2012-12-31 | 2012-12-31 | Casing float collar device for cementing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203022685U true CN203022685U (en) | 2013-06-26 |
Family
ID=48646676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207470042U Expired - Fee Related CN203022685U (en) | 2012-12-31 | 2012-12-31 | Casing float collar device for cementing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203022685U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032051A (en) * | 2012-12-31 | 2013-04-10 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Casing float collar for well cementation |
| CN112983348A (en) * | 2021-04-30 | 2021-06-18 | 纬达石油装备有限公司 | Floating hoop and floating shoe and using method thereof |
-
2012
- 2012-12-31 CN CN2012207470042U patent/CN203022685U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032051A (en) * | 2012-12-31 | 2013-04-10 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Casing float collar for well cementation |
| CN103032051B (en) * | 2012-12-31 | 2015-09-16 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | A kind of well cementation casing float collar |
| CN112983348A (en) * | 2021-04-30 | 2021-06-18 | 纬达石油装备有限公司 | Floating hoop and floating shoe and using method thereof |
| CN112983348B (en) * | 2021-04-30 | 2021-07-23 | 纬达石油装备有限公司 | Floating hoop and floating shoe and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20171231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |