CN206503574U - Ball type centralizer - Google Patents
Ball type centralizer Download PDFInfo
- Publication number
- CN206503574U CN206503574U CN201720165285.3U CN201720165285U CN206503574U CN 206503574 U CN206503574 U CN 206503574U CN 201720165285 U CN201720165285 U CN 201720165285U CN 206503574 U CN206503574 U CN 206503574U
- Authority
- CN
- China
- Prior art keywords
- ball
- mounting hole
- centralizer
- pressure cap
- ball mounting
- 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
- Earth Drilling (AREA)
Abstract
The utility model discloses ball type centralizer, for protecting the packing element of G.I.H not worn and torn by sleeve pipe and pit shaft, improves job success ratio.This centralizer is included provided with ball mounting hole, placement ball in it in the middle part of body, body, and pressure cap is threadedly coupled with body, blocks ball in ball mounting hole.Rolled when this centralizer works flexible, conventional sliders formula centralizer and roller-type centralizer are overcome the problem of barefoot interval easily fails, it is to avoid the damage and damage for instrument of going into the well, greatly reduce operating risk, the success rate of operation is effectively increased, with significant economic benefit.
Description
Technical field
The utility model is related to the centralizing tool of petroleum industry downhole packer, particularly ball type centralizer, for protecting
The packing element of shield G.I.H is not worn and torn by sleeve pipe and pit shaft, improves job success ratio.
Background technology
Some oily areas, the completion mode of most of well uses barefoot completion, and the new well of barefoot completion or old well are needed
Will be in fracturing work again, tripping in fracturing packer.And during tripping in fracturing packer, to ensure the glue of packer
Cylinder rubber is not worn and torn by sleeve pipe and uncased wellbore, it is necessary to which together tripping in centralizer is protected.Traditional slide block type, roller
Formula centralizer is using all kinds of corrupt practices creep in open hole well, such as, roller is easy when roller-type centralizer is used in uncased wellbore
Failure, roller loses the effect of roller；There is the drawbacks of frictional resistance is big in slide block type centralizer, add the resistance that tubing string is gone into the well
Power, easily makes go into the well tool wear or even damage.The centralizer used currently for above-mentioned packer needs improvement badly.
The content of the invention
To solve the above problems, the utility model provides ball type centralizer, the roller in current centralizer use is solved
The problem of easily failure and sliding block increase frictional resistance, it is to avoid the damage of downhole tool, improves job success ratio, reduces operating risk
And operating cost.
For up to above-mentioned purpose, solution of the present utility model is：Ball type centralizer includes being provided with the middle part of body, body
Ball mounting hole, placement ball in it, pressure cap are threadedly coupled with body, block ball in ball mounting hole.
The beneficial effects of the invention are as follows：The utility model uniform ball mounting hole for being provided with multiple tracks axial direction on body, its
The aperture of ball mounting hole is slightly larger than the external diameter of ball, and the ball quantity laid in ball mounting hole is to be booked ball mounting hole
Afterwards, ball still is able to freely roll in ball mounting hole and is advisable, and blocks in the body ball by pressure cap, in turn ensure that rolling
Pearl freely rotates.The problem of current roller-type centralizer roller fails is avoided, the presence of slide block type centralizer is turn avoid
Frictional resistance it is big the problem of.The utility model employs the operation principle of ball bearing, make this centralizer work when just as axle
Hold and equally roll flexibly, overcome conventional sliders formula centralizer and roller-type centralizer the problem of barefoot interval easily fails,
The damage and damage for the instrument of going into the well are avoided, operating risk is greatly reduced, the success rate of operation is effectively increased, with notable
Economic benefit.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing, not limited the scope of the invention, all designs using the present invention are thought
The improvement that rood goes out belongs to the protection category of the present invention.
Referring to Fig. 1, ball type centralizer includes body 1, and the middle part of body 1 is provided with ball mounting hole, placement ball 3 in it,
Pressure cap 2 is threadedly coupled with body 1, blocks ball 3 in ball mounting hole.
Ball mounting hole on the body 1 at least provided with three, be axially disposed within the middle part of body 1, ball mounting hole
Bottom hole closing, aperture blocked by pressure cap 2, the lateral wall of ball mounting hole and the outer wall insertion of body 1, enable ball 3 from
Expose in body 1.
The aperture of the ball mounting hole is more than the external diameter of ball 3, when ball 3 is booked in ball mounting hole, by pressure cap 2
After closure, ball 3 still is able to freely rotate in ball mounting hole.
After the pressure cap 2 is threadedly coupled with body 1, the front end of pressure cap 2 is welded with the contact portion of body 1.I.e. by pressure cap 2
The contact portion welding of body 1 between ball mounting hole, can increase the bonding strength between pressure cap 2 and body 1.
The pressure cap 2 is identical with the external diameter of body 1.
During using this centralizer, the two ends that this centralizer is connected on packer of going into the well can be used.
The embodiment described above is only exemplary embodiments, but the present invention is not limited only to these embodiments, this area
Technical staff can make modification under without departing from the spirit of the present invention and enlightenment.Aspect disclosed herein there may be a lot
Change, combination and modification, and be within, therefore, protection domain is not limited only to explanation above.
Claims (5)
1. ball type centralizer, including body, it is characterized in that, provided with ball mounting hole, placement ball, pressure cap in it in the middle part of body
It is threadedly coupled with body, blocks ball in ball mounting hole.
2. ball type centralizer as claimed in claim 1, it is characterized in that, the ball mounting hole on the body is at least provided with three
Middle part that is individual, being axially disposed within body, the bottom hole closing of ball mounting hole, aperture are blocked by pressure cap, the outside of ball mounting hole
The outer wall insertion of wall and body.
3. ball type centralizer as claimed in claim 2, it is characterized in that, the aperture of the ball mounting hole is more than the outer of ball
Footpath, after ball is booked in ball mounting hole, blocked by pressure cap, ball still is able to freely rotate in ball mounting hole.
4. ball type centralizer as claimed in claim 2, it is characterized in that, after the pressure cap is threadedly coupled with body, pressure cap
The contact portion welding of front end and body.
5. ball type centralizer as claimed in claim 4, it is characterized in that, the pressure cap is identical with the external diameter of body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720165285.3U CN206503574U (en) | 2017-02-23 | 2017-02-23 | Ball type centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720165285.3U CN206503574U (en) | 2017-02-23 | 2017-02-23 | Ball type centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206503574U true CN206503574U (en) | 2017-09-19 |
Family
ID=59840625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720165285.3U Expired - Fee Related CN206503574U (en) | 2017-02-23 | 2017-02-23 | Ball type centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206503574U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826571A (en) * | 2019-02-25 | 2019-05-31 | 中国石油天然气股份有限公司 | A kind of small―gap suture low friction resistance casing stabbing board |
| CN111022015A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Horizontal well open hole staged fracturing pipe column well descending device |
-
2017
- 2017-02-23 CN CN201720165285.3U patent/CN206503574U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022015A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Horizontal well open hole staged fracturing pipe column well descending device |
| CN109826571A (en) * | 2019-02-25 | 2019-05-31 | 中国石油天然气股份有限公司 | A kind of small―gap suture low friction resistance casing stabbing board |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206503574U (en) | Ball type centralizer | |
| NO20101591L (en) | Wear indicators for expandable earth drills | |
| CN204436328U (en) | With the seat sliding sleeve of elastic ball | |
| CN105781444B (en) | One kind subtracts torsion drop resistance stabilizer | |
| CN202810691U (en) | Antifriction resistance reducing short connection for well drilling | |
| US20160298400A1 (en) | Pipe Connector | |
| CN204984297U (en) | Non -rotating stabilizer | |
| CN107542422A (en) | The milling method and combined type junk mill and application method of different hole diameters | |
| CN208456522U (en) | A kind of drilling well is with subtracting torsion wear-prevention tool | |
| CN204386496U (en) | A kind of mechanical type falls to rub to subtract turns round pipe nipple | |
| MY167106A (en) | Large inside diameter completion with position indication | |
| CN202954752U (en) | Anti-drag centralizer | |
| CN104929576A (en) | Hydraulic-control dual-clack valve | |
| CN204140015U (en) | Well mouth pressure testing packer | |
| CN207436947U (en) | A kind of elasticity pipe column centralizer | |
| CN203296717U (en) | Superconducting centralizer | |
| CN205714019U (en) | One subtracts torsion fall resistance regulator | |
| CN206144517U (en) | Cement holds and stays ware | |
| CN204627452U (en) | A kind of drag reduction centralizer | |
| CN2856386Y (en) | High strength coring tool | |
| CN205778710U (en) | A kind of packer | |
| CN202510077U (en) | Guiding sliding block trip spear | |
| CN206917610U (en) | Anti-blocking slag drill rod connector for hydraulic rock drilling machine | |
| CN204326997U (en) | Low frictional resistance fracturing string rigid centralizer | |
| CN204212712U (en) | A kind of tool joint wearing ring |
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: 20170919 Termination date: 20200223 |