CN2462065Y - Composite tooth form single tri-cone rotary drill bit - Google Patents
Composite tooth form single tri-cone rotary drill bit Download PDFInfo
- Publication number
- CN2462065Y CN2462065Y CN 00244696 CN00244696U CN2462065Y CN 2462065 Y CN2462065 Y CN 2462065Y CN 00244696 CN00244696 CN 00244696 CN 00244696 U CN00244696 U CN 00244696U CN 2462065 Y CN2462065 Y CN 2462065Y
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- tooth
- bit
- teeth
- form single
- tooth form
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- Expired - Fee Related
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Abstract
The utility model relates to a composite tooth form single roller bit which is used for drilling in the earth crust. The composite tooth form single roller bit is composed of a tooth claw and a roller cone. The composite tooth form single roller bit is characterized in that teeth arranged on the roller cone adopt disk-shaped teeth and inlaid teeth simultaneously. The tooth arrangement mode of the roller cone is characterized in that a circle of the disk-shaped teeth, two circles of the disk-shaped teeth or three circles of the disk-shaped teeth can be arranged on the single roller cone, and the rest position is provided with the inlaid teeth. The tooth arrangement mode of the roller cone can be adjusted according to the stratum quality and the drilling requirement. The utility model has the comprehensive rock-breaking characteristics of a roller bit and a disk-shaped drill bit, so the rock-breaking efficiency is enhanced greatly. The composite tooth form single roller bit not only has higher drilling efficiency but also has longer service life. The utility model can be suitable for different stratums, and the processing cost can not be increased.
Description
The utility model relates to a kind of drilling well on the earth's crust, and especially the compound tooth-shaped single-cone rotary drill bit that uses in the petroleum natural gas exploration drilling well belongs to drilling bit.
In the petroleum natural gas exploration drilling well, using maximum at present is three gear wheel steel-tooths (claim not only mill teeth) and hard-metal insert (but also claiming inserted) drill bit.The essential characteristic of steel tooth bit is on the circular gear wheel matrix that superior alloy steel forges, directly cut out wedge shape tooth one by one with cutting working method, and then by heat treatment or apply the powder reinforced dental surface of weldering Talide to improve its abrasion resistance.The basic characteristics of insert bit are, its tooth is with the carbide alloy compacting sintering moulding in advance with high-wearing feature, be pressed in the perforation on cone shell surface with interference fit, form toothed gear wheel, its teeth patterning has conical tooth, dipper shape tooth, chisel teeth, hemi-spherical ended shape insert etc.In addition, (the patent No.: ZL98228864.6) in " dish type rock bit " utility model patent, the tooth that has proposed the dish type rock bit also on gear wheel machining form, but its gear ring no longer is cut into single wedge shape tooth, but continuously become one to enclose the disk shape gear ring, its cross sectional shape can be triangle, semicircle, trapezoidal, circular, wedge shape etc., and the abrasion resistance of the flank of tooth is by heat treatment or inlay, the build-up wear-resistant alloy obtains.More than three class drill bits with regard to the mechanism of fractured rock, steel-tooth bit by scrape cut the effect fractured rock, it is applicable to soft formation usually; Tungsten carbide insert bit generally is applicable to hard formation by extruding, impact grinding rock; And disc drill bit generally is applicable to hard formation by the squeezing action fractured rock.Because the scope of application of this three classes drill bit all has certain limitation, therefore when stratum character changes, often just can not adapt to, so that influence the raising of efficiency of breaking rock, rate of penetration and drill footage.
The purpose of this utility model is: be the rate of penetration and the drill footage of raising single-cone rotary drill bit, and propose a kind of with dish type tooth and the inserted compound tooth-shaped single-cone rotary drill bit that combines.
For achieving the above object, the utility model by the following technical solutions: compound tooth-shaped single-cone rotary drill bit mainly is made up of tooth pawl 1, gear wheel 2, it is characterized in that: the tooth on the gear wheel 2 adopts dish type tooth 4 and inserted by 3 simultaneously; Cloth tooth mode on the gear wheel 2 can be arranged a circle, two circles or three circle dish type teeth 4 on single cone, all the other arrange inserted by 3.Dish type tooth 4 and inserted 3 alternate layout effects are best, according to structural requirement, and also can not alternate layout.Tooth cloth tooth mode on the gear wheel 2 can require to adjust and select layout according to formation properties and drilling well.
Compared with prior art, the utility model has the advantages that: (1) compound tooth-shaped single-cone rotary drill bit has adopted the agent structure and the characteristics of motion of rock bit, what tooth structure and cloth tooth mode adopted is the complex method of rock bit and disc drill bit, it has the comprehensive broken rock characteristics of rock bit and disc drill bit, thereby efficiency of breaking rock improves a lot; (2) owing on same drill bit, have dish type tooth and inserted, thereby have better comprehensive performance, not only have higher drilling efficiency, and have long working life; (3) can and select for use different tooth-shape structures to adapt to the needs on different stratum by change cloth tooth mode, thereby enlarge the scope of application of this drill bit significantly, can not increase processing cost simultaneously.
The utility model is described in further detail below in conjunction with drawings and Examples.
Accompanying drawing is the structure chart of the compound tooth-shaped single-cone rotary drill bit of the utility model.Among the figure: 1. tooth pawl, 2. gear wheel, 3. inserted, 4. dish type tooth, 5. steel ball, 6. nozzle.
Whole processing method of compound tooth-shaped single-cone rotary drill bit and existing rock bit basically identical are furnished with inserted 3 and dish type tooth 4 on the gear wheel 2.Dish type tooth 4 is to form through lathe or milling machine machining on gear wheel 2, and it is continuously to become a dish type gear ring that encloses, and its cross section can be triangle, half garden shape, trapezoidal, wedge shape.For improving the abrasion resistance of dish type tooth 4, can inlay on its surface or other high-abrasive material of built-up welding.Inserted 3 available dedicated drilling machines are at the surperficial subdrilling perforation of gear wheel 2, and the carbide alloy tooth that will form by a firing in advance again is pressed in the perforation, keep certain magnitude of interference to get final product.Inserted 3 profile of tooth can be taper, wedge shape, wooden dipper shape, sphere.
Claims (1)
1. compound tooth-shaped single-cone rotary drill bit mainly is made up of tooth pawl (1) and gear wheel (2), it is characterized in that: the tooth on the gear wheel (2) adopts dish type tooth (4) and inserted (3) simultaneously; Cloth tooth mode on the gear wheel (2) can be arranged a circle, two circles or three circle dish type teeth (4), all the other layouts inserted (3) on single cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244696 CN2462065Y (en) | 2000-10-16 | 2000-10-16 | Composite tooth form single tri-cone rotary drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244696 CN2462065Y (en) | 2000-10-16 | 2000-10-16 | Composite tooth form single tri-cone rotary drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2462065Y true CN2462065Y (en) | 2001-11-28 |
Family
ID=33604332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00244696 Expired - Fee Related CN2462065Y (en) | 2000-10-16 | 2000-10-16 | Composite tooth form single tri-cone rotary drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2462065Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003091531A1 (en) * | 2002-04-23 | 2003-11-06 | Kingdream Public Ltd. Co. | A roller bit with a journal pin offset from the central axis thereof |
| CN103541659A (en) * | 2013-11-07 | 2014-01-29 | 杨立源 | Single-cone compound drill bit |
-
2000
- 2000-10-16 CN CN 00244696 patent/CN2462065Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003091531A1 (en) * | 2002-04-23 | 2003-11-06 | Kingdream Public Ltd. Co. | A roller bit with a journal pin offset from the central axis thereof |
| US7299887B2 (en) | 2002-04-23 | 2007-11-27 | Kingdream Public Ltd. Co. | Roller bit with a journal pin offset from the central axis thereof |
| CN103541659A (en) * | 2013-11-07 | 2014-01-29 | 杨立源 | Single-cone compound drill bit |
| CN103541659B (en) * | 2013-11-07 | 2016-08-17 | 杨立源 | A kind of Single-cone compound drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |