CN104818958A - Automatic grouting type float collar - Google Patents
Automatic grouting type float collar Download PDFInfo
- Publication number
- CN104818958A CN104818958A CN201510163435.2A CN201510163435A CN104818958A CN 104818958 A CN104818958 A CN 104818958A CN 201510163435 A CN201510163435 A CN 201510163435A CN 104818958 A CN104818958 A CN 104818958A
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- China
- Prior art keywords
- float collar
- cement
- valve
- automatic grouting
- ball
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Abstract
The invention provides an automatic grouting type float collar. The automatic grouting type float collar comprises a main body, a valve body, a ball, a spring and a cement body, wherein the main body is cylindrical; a female thread connected with a casing is arranged at the upper part of the main body; a male thread connected with the casing is arranged at the lower part of the main body; the cement body is arranged between the female thread and the male thread, is cylindrical, and is fixed in the main body; the valve body is arranged in the middle of the cement body, and consists of a valve head and a valve rod; a groove is formed in the lower end of the valve rod; the ball is arranged in the groove; and the spring is arranged between the groove and the valve head for covering the valve rod. The float collar is simple in operation and stable in conversion, enables slurry to enter the casing more smoothly, can quicken the casing discharge speed to the greatest extent, and can reduce the impact force acted on the stratum to the greatest extent; and the automatic grouting type float collar can overcome the characteristics of time and labor wastes in manual grouting.
Description
Technical field
The invention belongs to well cementing operation apparatus field, especially relate to a kind of for cased automatic grouting formula float collar of cementing the well.
Background technology
High-quality, efficiently setting of casing are the major issues that well cementing operation should be considered, whether the productivity effect entering to decide a bite well under the safety of each layer sleeve pipe and instrument even decides a bite well and can normally produce.In order to ensure the various tubing strings of G.I.H, the safety of instrument, keep hole stability, down-hole normal operation, must consider the internal and external pressure balance of tubing string, instrument and the problem of bore hole annulus mud upward velocity.The solution of current routine is: after completing to prevent well cementation, cement paste returns, casing part is equipped with float collar float plug, and conventional float collar float plug does not have automatic grouting function, must enter along with under sleeve pipe, artificial from well head to mud grouting in sleeve pipe, realize the dynamic equilibrium of sleeve pipe external and internal pressure; Generally enter 20 ~ 40 sleeve pipes under regulation and must fill a mud, in order to reduce the measure returning speed, can only be control lowering velocity, extending the setting of casing engineering time, and automatic grouting float collar float plug can make mud automatically flow into sleeve pipe, automatically realize the dynamic equilibrium of sleeve pipe external and internal pressure.
Summary of the invention
In view of this, the present invention is intended to propose a kind of automatic grouting formula float collar, and when casing job, mud enters sleeve pipe automatically, reduces setting of casing time, the at utmost impact force of reducing effect on stratum.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of automatic grouting formula float collar, comprise body, valve body, ball, spring and body of cement, described body is cylindrical, body upper part is provided with the box thread be connected with sleeve pipe, body lower part is provided with the male thread be connected with sleeve pipe, body of cement is provided with between described box thread and male thread, described body of cement is cylindrical, body of cement is fixed on body interior, be provided with valve body in the middle of described body of cement, described valve body is made up of valve head and valve rod, and described valve rod lower end is provided with groove, be provided with ball in described groove, be provided with spring housing between described groove and valve head on valve rod.
Further, described body of cement is mixed formed by high grade cement, yellow sand, microlith, expansion agent, water reducing agent.
Further, the material of described ball is steel ball.
Further, described valve body is that phenolic resins is compressing.
Further, described valve body is ball-and-seat.
Further, the material of described spring is resistant material, and spring easily bores and removes.
Relative to prior art, a kind of automatic grouting formula float collar of the present invention has following advantage: be connected to by float collar on casing string, when setting of casing, automatic grouting float collar, by being placed in groove by ball, makes ball be stuck on valve rod, spring can not be resetted, the top and the bottom of maintaining valve are communicated with, and so, just makes dynamic equilibrium inside and outside sleeve pipe, formed circulation, can fast under enter sleeve pipe; This float collar is simple to operate, transition temperature, more smooth and easy when making mud enter sleeve pipe, setting of casing speed can be accelerated to greatest extent, the at utmost impact force of reducing effect on stratum, use automatic grouting formula float collar can overcome the feature that artificial mud grouting is wasted time and energy, and being the needs that site safety is produced, carried out production strictly in line with rules and regulations, is also the needs of technological progress.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the overall structure schematic diagram described in the embodiment of the present invention.
Description of reference numerals:
1-body, 2-valve body, 21-valve rod, 22-valve head, 3-groove, 4-ball, 5-spring, 6-body of cement.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
In addition, a kind of automatic grouting formula float collar mentioned in an embodiment of the present invention, comprise body 1, valve body 2, ball 4, spring 5 and body of cement 6, described body 1 is cylindrical, body 1 top is provided with the box thread be connected with sleeve pipe, body 1 bottom is provided with the male thread be connected with sleeve pipe, body of cement 6 is provided with between described box thread and male thread, described body of cement 6 is cylindrical, it is inner that body of cement 6 is fixed on body 1, valve body 2 is provided with in the middle of described body of cement 6, described valve body 2 is made up of valve head 22 and valve rod 21, described valve rod 21 lower end is provided with groove 3, ball 4 is provided with in described groove 3, be provided with spring 5 between described groove 3 and valve head 22 to be enclosed within valve rod 21.
Described body of cement 6 is mixed formed by high grade cement, yellow sand, microlith, expansion agent, water reducing agent.
The material of described ball 4 is steel ball.
Described valve body 2 is that phenolic resins is compressing.
Described valve body 2 is ball-and-seat.
The material of described spring 5 is resistant materials.
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Float collar body 1 is cylindrical, float collar body 1 bottom is provided with the male thread mated with sleeve pipe, body 1 top is provided with the box thread mated with sleeve pipe, body of cement 6 is by high strength cement ash, fine aggregate, water reducing agent, the mixing such as expansion agent is formed, body of cement 6 can be dry at short notice, and volume expansion after cement drying, became one with body 1 well, ensure that the intensity of cement can reach or exceed standard-required, resistance to pressure-bearing, effectively can fix valve head 22 and valve rod 21, the Main Function parts of automatic grouting float collar are valve head 22 and valve rod 21, valve rod 21 is processed with the groove 3 putting ball 4, when ball 4 sweeps away by flow from top to bottom, common float collar has just been become from grouting floating hoop, automatic grouting float collar is by being placed in groove 3 by ball 4, ball 4 is made to be stuck on valve rod 21, spring 5 can not be resetted, the top and the bottom of maintaining valve are communicated with, like this, valve body 2 is gone into the well in process at sleeve pipe, liquid in well also enters the sleeve pipe of more than float collar by valve body 2, make sleeve pipe internal and external pressure balance, when casing job, mud enters sleeve pipe automatically, reduce the setting of casing time, the at utmost impact force of reducing effect on stratum.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. an automatic grouting formula float collar, it is characterized in that: comprise body, valve body, ball, spring and body of cement, described body is cylindrical, body upper part is provided with the box thread be connected with sleeve pipe, body lower part is provided with the male thread be connected with sleeve pipe, body of cement is provided with between described box thread and male thread, described body of cement is cylindrical, body of cement is fixed on body interior, valve body is provided with in the middle of described body of cement, described valve body is made up of valve head and valve rod, described valve rod lower end is provided with groove, ball is provided with in described groove, spring housing is provided with on valve rod between described groove and valve head.
2. a kind of automatic grouting formula float collar according to claim 1, is characterized in that: described body of cement is mixed formed by high grade cement, yellow sand, microlith, expansion agent, water reducing agent.
3. a kind of automatic grouting formula float collar according to claim 1, is characterized in that: the material of described ball is steel ball.
4. a kind of automatic grouting formula float collar according to claim 1, is characterized in that: described valve body is that phenolic resins is compressing.
5. a kind of automatic grouting formula float collar according to claim 1, is characterized in that: described valve body is ball-and-seat.
6. a kind of automatic grouting formula float collar according to claim 1, is characterized in that: the material of described spring is resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163435.2A CN104818958A (en) | 2015-04-08 | 2015-04-08 | Automatic grouting type float collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163435.2A CN104818958A (en) | 2015-04-08 | 2015-04-08 | Automatic grouting type float collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104818958A true CN104818958A (en) | 2015-08-05 |
Family
ID=53729411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510163435.2A Pending CN104818958A (en) | 2015-04-08 | 2015-04-08 | Automatic grouting type float collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104818958A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110357563A (en) * | 2019-07-04 | 2019-10-22 | 四川达灿石油设备有限公司 | A kind of cementing operation cement base float collar float plug |
-
2015
- 2015-04-08 CN CN201510163435.2A patent/CN104818958A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110357563A (en) * | 2019-07-04 | 2019-10-22 | 四川达灿石油设备有限公司 | A kind of cementing operation cement base float collar float plug |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150805 |