CN206129180U - Casing coupling of function is right in area - Google Patents
Casing coupling of function is right in area Download PDFInfo
- Publication number
- CN206129180U CN206129180U CN201621020347.3U CN201621020347U CN206129180U CN 206129180 U CN206129180 U CN 206129180U CN 201621020347 U CN201621020347 U CN 201621020347U CN 206129180 U CN206129180 U CN 206129180U
- Authority
- CN
- China
- Prior art keywords
- casing coupling
- casing
- sleeve pipe
- erection device
- function
- 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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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The utility model provides a casing coupling of function is right in area, including the casing coupling body, radially set up a plurality of righting device on the surface of casing coupling body, righting device with casing coupling body integrated into one piece. The utility model discloses advantage and positive effect that the creation has are: at first, the effectual easy inclined to one side problem of mill that takes place of casing coupling that has prevented also makes the sleeve pipe carry out the function of rightting simultaneously, especially, rightting of sleeve pipe and casing coupling be fit for carrying on under the little condition of well size. Secondly, casing coupling's intensity can not only be increased, the time cost of mounting sleeve centralizer has been practiced thrift, when meetting in the pit the blocked portion condition, the moving casing cluster unfreezing of being convenient for by a wide margin. It is last, the effectual parts of stopping to result in when original plus sleeve pipe centralizer the damages well that falls, then the accident of and then salvaging appears, has improved production efficiency.
Description
Technical field
The invention belongs to the drilling field of soil layer or rock, connects more particularly, to a kind of sleeve pipe with righting function
Hoop.
Background technology
In the drilling process of oil exploitation, sleeve pipe is mainly used in the support in drilling process and after completion to the borehole wall, with
Ensure the normal operation of whole oil well after carrying out and the completion of drilling process, casing coupling be used to connecting adjacent two piece sleeve pipe and
Its adnexa, and extend bunch tube to the pipe string length for needing.The erection device that at present oil well is used is mostly fixed on sleeve pipe
Centralizer, although serve certain centralizing function, but and cannot thoroughly solve the problems, such as that mill is inclined because finding that mill is inclined in practice
Phenomenon great majority occur on box cupling.And casing stabbing board is used for righting sleeve pipe, it is ensured that the centralizer of sleeve pipe, well cementation matter is improved
Amount.At present the casing coupling of onsite application only possesses connection sleeve pipe function, the function of not possessing righting sleeve pipe.Need separately installed
Casing stabbing board is guaranteeing righting effect.Sleeve pipe is typically due to increased erection device and causes caliber thicker, it is difficult to meet The Small Well
The installation requirement of eye.It is well known that borehole size is less, casing size is less, and corresponding well is less with casing annulus gap,
Casing stabbing board thickness is accordingly limited, difficulty of processing increase, and centralizer is easily damaged and causes setting of casing blocked portion, or even blocking set
Pipe and bore hole annulus, cause the complicated even accident of setting of casing, well cementation.
The content of the invention
The invention problem to be solved is how to provide one kind to be adapted to little borehole size, sleeve pipe and bore hole annulus
The little small size sleeve pipe in gap is used, and righting function can be realized again and strengthens the casing coupling of the intensity of centralizer.
To solve above-mentioned technical problem, the technical scheme that the invention is adopted includes casing coupling body, described sleeve pipe
Be radially arranged some erection devices on the outer surface of box cupling body, the erection device and described sleeve pipe box cupling body one into
Type.
Further, the erection device is spiral type or rectangle.
Further, the erection device both sides arrange chamfering, and the chamfering is in 15-24 degree.
Further, blind hole is set above the erection device, affixed erection device gauge teeth in blind hole.The erection device
Gauge teeth is PDC composite sheet teeth.
The invention has the advantages and positive effects that：First, it is effectively prevented casing coupling incidental
Inclined problem is ground, while also causing sleeve pipe to carry out the function of righting；Carry out in the case that especially suitable borehole size is little sleeve pipe and
The righting of casing coupling.Secondly, the intensity of casing coupling can not only be increased, has saved the time cost for installing casing stabbing board,
When running into down-hole blocked portion situation, significantly can be easy to unfreezing by moving casing string.Finally, effectively prevent original additional sleeve pipe to help
Caused part falls well when positive device is damaged, and the accident that then again row is salvaged occurs, and improves production efficiency.
Description of the drawings
Fig. 1 is the front schematic view of tetragon erection device of the present utility model
Fig. 2 is the front schematic view of rectangle erection device of the present utility model
In figure：
1st, casing coupling body；2nd, erection device；3rd, erection device gauge teeth；4th, chamfering；5th, tetragon erection device；6、
Rectangle erection device
Specific embodiment
The specific embodiment of the invention is elaborated below in conjunction with the accompanying drawings.
As shown in figure 1, described sleeve pipe box cupling includes casing coupling body, on the outer surface of described sleeve pipe box cupling body radially
Some erection devices, the erection device and this body by integral forming of described sleeve pipe box cupling are set.Casing coupling body can be according to even
Connect button-type and process different normal sleeve screw threads of coupler.Erection device is integral type with casing coupling body, by lathe process
Into, so not only erection device intensity is improved, meanwhile, erection device also improves intensity to casing coupling.The set
Pipe box cupling body wall thickness is identical or thick with standard box cupling thickness.Telescopic joint and two functions of casing centering are provided simultaneously with,
It is particularly suited for that casing stabbing board is easily damaged, not easy processing small size sleeve pipe.Casing coupling body is according to different sleeve pipes
Connection request, can process short circle, oval, the button-type such as ladder connection sleeve pipe and casing hardware partially, possess linkage function.The righting
Device is spiral type or rectangle, the suitable 3-6 blocks of quantity.Erection device thickness, external diameter can be according to different wells and sleeve pipe
Annular clearance carries out size adjusting.The time cost for installing casing stabbing board has been saved, when running into down-hole blocked portion situation, can be significantly
Degree moving casing string is easy to unfreezing.Effectively prevent caused part when original additional casing stabbing board is damaged to fall well, then
The accident that again row is salvaged occurs, and improves production efficiency.The erection device both sides arrange chamfering, and the chamfering is in 15-24 degree,
Optimum efficiency is 18 degree of chamferings.When the erection device fillet surface of 18 ° of chamferings reduces removing bunch tube, bunch tube box cupling shoulder plane
Destruction is scraped in drawing to the borehole wall, and is conducive to by borehole wall shoulder, has reduced setting of casing blocked portion probability, and using safety setting of casing is played
String.Face arranges blind hole, affixed erection device gauge teeth in blind hole.The erection device gauge teeth is PDC materials.Erection device is protected
Footpath tooth root, can be using hard-metal insert or PDC composite sheet teeth according to Open-Hole Section stratum abrasiveness grade.Erection device gauge teeth is protected
Demonstrate,prove the righting effect that erection device thickness during setting of casing will not wear and tear and affect erection device；
One embodiment of the invention has been described in detail above, but the content is only the invention
Preferred embodiment, it is impossible to be considered as the practical range for limiting the invention.It is all to be made according to the invention application range
Impartial change with improve etc., all should still belong within the patent covering scope of the invention.
Claims (5)
1. a kind of casing coupling with righting function, it is characterised in that：Including casing coupling body, described sleeve pipe box cupling body
Some erection devices, the erection device and this body by integral forming of described sleeve pipe box cupling are radially arranged on outer surface.
2. casing coupling according to claim 1, it is characterised in that：The erection device is spiral type or rectangle.
3. casing coupling according to claim 1, it is characterised in that：The erection device both sides arrange chamfering, it is described fall
Angle is in 15-24 degree.
4. casing coupling according to claim 1, it is characterised in that：Blind hole is set above the erection device, in blind hole
Affixed erection device gauge teeth.
5. casing coupling according to claim 4, it is characterised in that：The erection device gauge teeth is PDC composite sheet teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621020347.3U CN206129180U (en) | 2016-08-31 | 2016-08-31 | Casing coupling of function is right in area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621020347.3U CN206129180U (en) | 2016-08-31 | 2016-08-31 | Casing coupling of function is right in area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206129180U true CN206129180U (en) | 2017-04-26 |
Family
ID=58568312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621020347.3U Expired - Fee Related CN206129180U (en) | 2016-08-31 | 2016-08-31 | Casing coupling of function is right in area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206129180U (en) |
-
2016
- 2016-08-31 CN CN201621020347.3U patent/CN206129180U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20210831 |