CN101255785A - Skidproof well cementing rubber plug - Google Patents
Skidproof well cementing rubber plug Download PDFInfo
- Publication number
- CN101255785A CN101255785A CNA2008101029919A CN200810102991A CN101255785A CN 101255785 A CN101255785 A CN 101255785A CN A2008101029919 A CNA2008101029919 A CN A2008101029919A CN 200810102991 A CN200810102991 A CN 200810102991A CN 101255785 A CN101255785 A CN 101255785A
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- rubber plug
- skidproof
- well cementing
- well
- antiskid
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Abstract
The present invention discloses an antiskid well cementing rubber plug which belongs to field of oil drilling and cementing. The antiskid well cementing rubber plug comprises a stopper plug, a chassis, a multilevel disc limb and an antiskid layer. Multiple pits or tubers are distributed on lower surface of the antiskid layer. In cementing operation, the lower surface of the antiskid layer touches cement, for the antiskid cementing well rubber plug with pits, the cement is filled in pits of the antiskid layer, for antiskid cementing well rubber plug with tubers, the tubers are embedded cement; when the cement concretes, the antiskid well cementing rubber plug and the cement concrete into an integration. Thus, the antiskid well cementing rubber plug rotating with drill in drill drilling process is avoided, that makes the antiskid well cementing rubber plug is easy to crush. The antiskid well cementing rubber plug of present invention has simple structure and convenient production, which can improve efficiency of oil well drilling and cementing efficiently.
Description
Technical field
The present invention relates to oil drilling well cementation field, particularly a kind of Skidproof well cementing rubber plug.
Background technology
In the well cementing operation of oil drilling, need to adopt the cementing plug isolation and scrape drilling fluid and the cement paste that adheres on the internal surface of sleeve pipe.After waiting to the cement solidifies, with drill bit that cementing plug is broken with the cement brill that is isolated in the cementing plug bottom again, its chip is together discharged well with well liquid under the pressure of well liquid, to guarantee the unimpeded of oil well.But the bottom surface of present normally used cementing plug is a plane structure, in the drill bit drilling process, cementing plug can be drilled head drive and rotate and be difficult for broken by bit drills with drill bit, so just cause well to stop up easily, thereby prolonged the time of well cementing operation, influenced the follow-up construction of well drilling and cementing.
Summary of the invention
In order to make cementing plug be easy to bore broken, prevent that well is blocked, improve the well cementation operating efficiency, the invention provides a kind of Skidproof well cementing rubber plug, this Skidproof well cementing rubber plug comprises: chock plug, collet, the multistage plate-like wing, bottom at the multistage plate-like wing also is provided with skid resistant course, is used in the broken process of brill Skidproof well cementing rubber plug being fixed.
Skidproof well cementing rubber plug of the present invention is distributed with a plurality of pits at the soffit of skid resistant course.
Skidproof well cementing rubber plug of the present invention, its a plurality of pits evenly distribute on the skid resistant course soffit.
Skidproof well cementing rubber plug of the present invention, its pit are the bar shaped pit.
Skidproof well cementing rubber plug of the present invention, its pit are circular pit.
Skidproof well cementing rubber plug of the present invention is distributed with a plurality of projections at the skid resistant course soffit.
Skidproof well cementing rubber plug of the present invention, its a plurality of projections evenly distribute on described skid resistant course soffit.
Skidproof well cementing rubber plug of the present invention, its projection are circular projection.
The beneficial effect of technical scheme provided by the invention is: adopt above-mentioned Skidproof well cementing rubber plug, can guarantee in the operation process of the broken Skidproof well cementing rubber plug of bit drills, Skidproof well cementing rubber plug keeps relative fixed with the set cement that is isolated in its underpart, and can not rotate with drill bit, thereby guarantee that Skidproof well cementing rubber plug can be drilled at an easy rate broken, can not cause well by shutoff, improve drillng operation efficient simultaneously yet.In addition, Skidproof well cementing rubber plug manufacture craft of the present invention is simple, and cost is low, and is very easy to use.
Description of drawings
Fig. 1 is the whole axial section of Skidproof well cementing rubber plug that the embodiment of the invention provides;
Fig. 2 is the lower surface view of first kind of Skidproof well cementing rubber plug providing of the embodiment of the invention;
Fig. 3 is the lower surface view of second kind of Skidproof well cementing rubber plug providing of the embodiment of the invention;
Fig. 4 is the lower surface view of the third Skidproof well cementing rubber plug of providing of the embodiment of the invention.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Referring to Fig. 1, Skidproof well cementing rubber plug provided by the invention mainly comprises four parts, is chock plug 1, collet 2, the multistage plate-like wing 3 and skid resistant course 4 from top to bottom successively.The integral body of some Skidproof well cementing rubber plug also is provided with through hole 7 vertically.
Chock plug 1 is up big and down small flared structure.What be connected with chock plug 1 is columniform collet 2, and its collet 2 columniform diameters are identical with chock plug 1 lower diameter.Be connected with the multistage plate-like wing 3 in collet 2 bottoms, the progression of the plate-like wing is generally 3 to 6 grades, and its concrete progression can be determined according to actual needs.The stage casing of every grade of plate-like wing is thicker, and two sections are thinner, is the spindle shape.
Be connected with one deck skid resistant course 4 in the bottom of the multistage plate-like wing 3.The thickness of skid resistant course 4 can be identical with the thickness of the one-level plate-like wing, and the diameter of skid resistant course 4 can be identical with the diameter of the multistage plate-like wing 3 or be slightly less than the diameter of the multistage plate-like wing 3.
Skid resistant course soffit 8 is provided with pit 5 or projection 6.The quantity of pit or projection can be determined according to the practice of construction needs, but in order to guarantee to reach skidproof effect preferably, the quantity of pit or projection should be more than two.Pit or projection can be on skid resistant course soffit 8 distribute arbitrarily, but for Skidproof well cementing rubber plug in the drill bit drilling process stressed evenly, preferably pit or the projection geometric center around skid resistant course soffit 8 is evenly distributed.
Fig. 2 is the lower surface view of first kind of Skidproof well cementing rubber plug providing of the embodiment of the invention.As seen from the figure, be evenly distributed with 4 bar shaped pits 5 at skid resistant course soffit 8 upper edge through holes 7 edges of Skidproof well cementing rubber plug.Geometric center with skid resistant course soffit 8 is the center of circle, the adjacent successively an angle of 90 degrees of each bar shaped pit, and two pit lines with relative are cross.
Fig. 3 is the lower surface view of second kind of Skidproof well cementing rubber plug providing of the embodiment of the invention.As seen from the figure, be evenly distributed with 4 circular pit 5 at skid resistant course soffit 8 upper edge through holes 7 edges of Skidproof well cementing rubber plug.Geometric center with skid resistant course soffit 8 is the center of circle, the adjacent successively an angle of 90 degrees of each circular pit, and two pit lines with relative can be cross.
Solid for guaranteeing Skidproof well cementing rubber plug and bottom cemented, the degree of depth degree of pit 5 can be designed as about 1/2nd of skid resistant course 4 thickness.
In cementing job, the skid resistant course soffit 8 of Skidproof well cementing rubber plug contacts with cement, and cement can be filled in the pit 5 of skid resistant course soffit 8, and after waiting to the cement solidifies, the cement in the pit 5 can be one with the cement setting of skid resistant course 4 bottoms.Skidproof well cementing rubber plug is fixed by cement like this, thereby can prevent that Skidproof well cementing rubber plug rotates with drill bit in the drill bit drilling process.
Fig. 4 is the lower surface view of the third Skidproof well cementing rubber plug of providing of the embodiment of the invention.As seen from the figure, skid resistant course soffit 8 upper edge through holes 7 edges at Skidproof well cementing rubber plug are evenly distributed with 12 projection bands of being made up of less circular projection radially, every the projection band is made up of three less circular projections 6, and the angle between every projection band is 30 degree.Solid for guaranteeing Skidproof well cementing rubber plug and bottom cemented, the height of projection 6 can be designed as about 1/3rd of skid resistant course thickness.
In cementing job, the soffit of Skidproof well cementing rubber plug skid resistant course 8 contacts with cement, and the projection on the skid resistant course soffit 8 can embed in the cement, and after waiting to the cement solidifies, projection 6 can be an one with cement setting.Skidproof well cementing rubber plug is just fixed by cement like this, thereby can prevent that Skidproof well cementing rubber plug rotates with drill bit in the drill bit drilling process.
Adopt Skidproof well cementing rubber plug of the present invention can effectively prevent the problem that cementing plug rotates with drill bit in the process of boring broken cementing plug, thereby can improve drillng operation efficient.Skidproof well cementing rubber plug of the present invention in addition is simple in structure, easily manufactured, its anti-skid structure can with cementing plug body once-forming.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a Skidproof well cementing rubber plug comprises chock plug, collet, the multistage plate-like wing, it is characterized in that, is provided with skid resistant course in the bottom of the described multistage plate-like wing, is used for guaranteeing in the broken process of brill described Skidproof well cementing rubber plug being fixed.
2. Skidproof well cementing rubber plug according to claim 1 is characterized in that the soffit of described skid resistant course is distributed with a plurality of pits.
3. Skidproof well cementing rubber plug according to claim 2 is characterized in that, described a plurality of pits evenly distribute on described skid resistant course soffit.
4. Skidproof well cementing rubber plug according to claim 2 is characterized in that, described pit is the bar shaped pit.
5. Skidproof well cementing rubber plug according to claim 2 is characterized in that, described pit is a circular pit.
6. Skidproof well cementing rubber plug according to claim 1 is characterized in that, is distributed with a plurality of projections at described skid resistant course soffit.
7. Skidproof well cementing rubber plug according to claim 6 is characterized in that, described a plurality of projections evenly distribute on described skid resistant course soffit.
8. Skidproof well cementing rubber plug according to claim 6 is characterized in that, described projection is circular projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101029919A CN101255785A (en) | 2008-03-28 | 2008-03-28 | Skidproof well cementing rubber plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101029919A CN101255785A (en) | 2008-03-28 | 2008-03-28 | Skidproof well cementing rubber plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101255785A true CN101255785A (en) | 2008-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101029919A Pending CN101255785A (en) | 2008-03-28 | 2008-03-28 | Skidproof well cementing rubber plug |
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| CN (1) | CN101255785A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI499546B (en) * | 2009-12-29 | 2015-09-11 | 尼康股份有限公司 | A substrate cartridge and a substrate accommodating device |
-
2008
- 2008-03-28 CN CNA2008101029919A patent/CN101255785A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI499546B (en) * | 2009-12-29 | 2015-09-11 | 尼康股份有限公司 | A substrate cartridge and a substrate accommodating device |
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Open date: 20080903 |