CN87208513U - Drill set aligner - Google Patents
Drill set aligner Download PDFInfo
- Publication number
- CN87208513U CN87208513U CN 87208513 CN87208513U CN87208513U CN 87208513 U CN87208513 U CN 87208513U CN 87208513 CN87208513 CN 87208513 CN 87208513 U CN87208513 U CN 87208513U CN 87208513 U CN87208513 U CN 87208513U
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- CN
- China
- Prior art keywords
- centralizer
- centralizing
- dovetail groove
- utility
- block
- 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.)
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Abstract
The utility model relates to a diameter regulating and block changing type centralizing device for drilling tools, which is used in the process of well drilling to ensure well quality. The utility model is characterized in that a dovetail groove with a certain slope is arranged on the main body of the utility model; three spiral type centralizing blocks are embedded in the dovetail groove. When the outer diameter of each centralizing block is abraded to become small, the centralizing blocks can move upwards gradually along the dovetail groove with a certain slope on the main body of the centralizing device, and the upwards moving distance is determined according to the dimension of a regulated diameter. The utility model can fully utilize the valuable wear-resistant material on the surfaces of the centralizing blocks and the main body of the centralizing device, and performs a reliable action on ensuring well quality.
Description
The utility model is a kind of drilling tool centralizer that is used for Process of Oil Well Drilling, and it is installed in drilling rod, drill collar, drill bit position respectively, in the well-digging drilling process, can guarantee the wellbore quality of drilling well, comprises that well bore is directly spent, the gradient of inclined shaft well bore.Directional well well bore orientation and well rule degree etc.
At present, the structure of drilling tool centralizer is the monolithic devices structure both at home and abroad, and promptly the body of centralizer is exactly a triple helical or four spirochetal overall structures, and this spirochetal appearance is welded with certain thickness carbide alloy or diamond wear proof material, so price is higher.When centralizer body external diameter surface mill is little after to a certain degree, whole centralizer is just all scrapped, and this centralizer is disposable use.This has not only improved drilling cost greatly, and has caused a large amount of wastes.Russian Patent SU-734386 has announced that a kind of external diameter is the device of holding up out of bullet, and it is according to the use of can turning upside down of the difference situation of creeping into, but the centralizer of this structure does not still reach the purpose of regulating external diameter.Russian Patent SU-751957 has announced and a kind ofly can change the centralizer of applying mechanically, its two connecting thread, and fix with stopper slot, the centralizer of this structure does not reach the effect that makes full use of carbide alloy or diamond appearance yet.
The purpose of this utility model is to provide a kind of can regulate the centralizer external diameter, can change the drilling tool centralizer of wiper block again.The dovetail groove that has constant slope on the body of this centralizer, outer watchband carbide alloy or adamantine wiper block embed in groove.After wiper block external diameter mill is little, loosening wiper block is two clamping sleeve up and down, and wiper block moves on gradually along the gradient dovetail groove on the centralizer body, moves 15 millimeters strokes on whenever, the wiper block external diameter increases 1 millimeter, on the distance of moving decide according to the size of path transfer.After the carbide alloy on the wiper block or diamond appearance may wear to a certain degree, more change wiper block, centralizer body still can continue to use.Adjustable, the block-changing type centralizer of this structure not only can make full use of valuable carbide alloy or diamond appearance, make full use of centralizer body, and because external diameter is adjustable, to satisfying the drilling technology requirement, guarantee wellbore quality, guarantee that especially the well of directional well, clump well testing has reliable effect to the degree of accuracy.
Accompanying drawing 1 is adjustable, block-changing type drilling tool centralizer overall structure schematic diagram.
Accompanying drawing 2 is that wiper block embeds the cut-away view in dovetail groove.
Be described further below in conjunction with accompanying drawing: centralizer body has the dovetail groove 9 of constant slope as can be seen from accompanying drawing 1, wiper block 2 embeds in dovetail groove, the appearance of wiper block 2 is welded with carbide alloy or diamond wear proof material 8, two up and down of wiper block 2 is an aligning cover 4, two up and down of aligning cover 4 is the clamping sleeve 3 of threaded screw thread, and lock washer 5 snaps in the glossal canal of clamping sleeve center.From accompanying drawing 2 as can be seen wiper block 2 be embedded in the dovetail groove 9 of body 1, spring voussoir 6 is squeezed in the dovetail groove, is used for fixing wiper block 2.
Centralizer is in the path transfer process, earlier dig lock washer 5 with bottle opener, pine moves back the positive left-hand thread of tight cover 3 again, pulls out loose spring drift 6, move three wiper blocks on equidistant, whenever move 15 millimeters strokes on, the centralizer external diameter increases 1 millimeter, be adjusted to require external diameter after, squeeze into drift 6 gently, first-class location clamping sleeve 3, but aligning cover 4 automatic alignings, the glossal canal that lock washer 5 is aimed on the clamping sleeve is put into.Treat that wiper block surface hard alloy or diamond wear proof material have ground the replaceable wiper block of back centralizer, change the operating process and the path transfer process basically identical of wiper block.
After this path transfer, block-changing type centralising device for drilling tool are regulated external diameter, life-span is higher than more than the disposable centralizer twice, can reuse because of centralizer body again, on average comprehensively economize on the use of funds more than 50%, again owing to be used for cluster well, directional well drilling well to the accuracy rate height, this centralizer is in the drilling process, the downhole tool that economic benefit and social benefit are higher.
Claims (5)
1, a kind of appearance is welded with the path transfer of triple helical body, the block-changing type drilling tool centralizer of carbide alloy or diamond wear proof material, and 9 three conveyor screw wiper blocks 2 of dovetail groove that the body that it is characterized in that centralizer is provided with constant slope embed in groove.
2, centralizer according to claim 1 is characterized in that aligning cover 4 is equipped with at two up and down of wiper block.
3, centralizer according to claim 1 and 2 is characterized in that two up and down of aligning cover 4 is fastening with the clamping sleeve 3 of threaded screw thread.
4,, it is characterized in that lock washer 5 snaps in the glossal canal in the clamping sleeve 3 according to claim 1 or 2 or 3 described centralizers.
5, centralizer according to claim 1 is characterized in that squeezing in the dovetail groove 9 with spring voussoir 6, is used for fixing wiper block 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87208513 CN87208513U (en) | 1987-05-29 | 1987-05-29 | Drill set aligner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87208513 CN87208513U (en) | 1987-05-29 | 1987-05-29 | Drill set aligner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87208513U true CN87208513U (en) | 1988-02-03 |
Family
ID=4823770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87208513 Withdrawn CN87208513U (en) | 1987-05-29 | 1987-05-29 | Drill set aligner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87208513U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403881A (en) * | 2018-12-26 | 2019-03-01 | 济源微浪石油设备有限公司 | Interchangeable straight wing stabilizer |
-
1987
- 1987-05-29 CN CN 87208513 patent/CN87208513U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403881A (en) * | 2018-12-26 | 2019-03-01 | 济源微浪石油设备有限公司 | Interchangeable straight wing stabilizer |
| CN109403881B (en) * | 2018-12-26 | 2023-12-26 | 济源微浪石油设备有限公司 | Stabilizer with replaceable straight wings |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |