CN2421403Y - Composite tooth rock roller bit - Google Patents
Composite tooth rock roller bit Download PDFInfo
- Publication number
- CN2421403Y CN2421403Y CN 99251810 CN99251810U CN2421403Y CN 2421403 Y CN2421403 Y CN 2421403Y CN 99251810 CN99251810 CN 99251810 CN 99251810 U CN99251810 U CN 99251810U CN 2421403 Y CN2421403 Y CN 2421403Y
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- CN
- China
- Prior art keywords
- tooth
- bit
- utility
- model
- roller cone
- 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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Abstract
The utility model relates to a composite tooth-shaped roller cone bit, which is mainly composed of a cone claw and a roller cone. The utility model is characterized in that disk-shaped teeth, inserted teeth and steel teeth are simultaneously used by teeth arranged on the roller cone, and the arrangement mode of the teeth arranged on the roller cone is adjusted according to stratum properties and drilling requirements. The processing method of the utility model is the same as the processing method of the existing roller cone bit and the disk type bit, and the processing cost can not be increased. The utility model has the characteristic of comprehensive breaking rock of the roller cone bit and the disk type bit. The utility model can adapt to the requirement of different strata. The utility model has the advantages of higher drilling efficiency and longer service life.
Description
The utility model relates to the rock bit that is used for drilling well on the earth's crust, in particular for the rock bit of oil and gas well drilling.
In oil and gas well drilling, 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 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, press in the perforation on people's 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, in " dish type rock bit " patent (patent No.: ZL98 2 28864.6), the dish type rock bit has been proposed, the tooth of dish type rock bit also is that machining forms on gear wheel, but, its gear ring no longer is cut into single wedge shape tooth, but continuously forms a dish type gear ring that encloses, its cross sectional shape can be triangle, semicircle, trapezoidal, 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.With regard to the mechanism of fractured rock, steel-tooth bit is cut the effect fractured rock by scraping, and 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 is cut the effect fractured rock by pushing and scraping, and generally is applicable to soft formation and medium ground.Because the scope of application of above-mentioned three kinds of drill bits 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 to propose a kind of steel-tooth, inserted, compound tooth-shaped rock bit that the dish type tooth makes up layout mutually, to adapt to the requirement of heterogeneity stratum and drilling well, improves the rate of penetration and the drill footage of drill bit.
For achieving the above object, the utility model is by the following technical solutions: the building block of rock bit is identical with the building block of existing drill bit, all be by tooth pawl (1), gear wheel (2) is formed, gear wheel can be a single cone, two gear wheels, three gear wheels or polydonita wheel, its characteristics are, tooth on the gear wheel has adopted dish type tooth (3) simultaneously, inserted (4) and steel-tooth (5), tooth arrangement on the gear wheel can require to adjust according to formation properties and drilling well, can on one or two gear wheel, arrange the dish type tooth, arrange inserted or steel-tooth on all the other gear wheels, also can on same gear wheel, arrange the dish type tooth simultaneously, inserted or steel-tooth.So just constituted compound tooth-shaped rock bit.
Compared with prior art, advantage of the present utility model is: (1) compound tooth-shaped rock 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 increases substantially.(2) owing on same drill bit, have dish type tooth, inserted and steel-tooth, 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 method, thereby enlarge the scope of application of this drill bit greatly.(4) its processing method and existing tricone bit and disc drill bit are just the same, can not increase processing cost.
Accompanying drawing 1 is compound tooth-shaped tricone bit structural representation.
Accompanying drawing 2 is that the tooth on certain gear wheel is arranged schematic diagram.
Below in conjunction with description of drawings embodiment of the present utility model:
The structure of compound tooth-shaped rock bit and existing rock bit are basic identical, mainly form by tooth pawl (1) and gear wheel (2), the number of tooth pawl and gear wheel can be as required one, two, three or more.Figure 1 shows that three tooth pawls and three compound tooth-shaped rock bit that gear wheel is formed, wherein be furnished with inserted (4) on the gear wheel (2-1); Be furnished with dish type tooth (3) on the gear wheel (2-2); Be furnished with dish type tooth (3), inserted (4) and steel-tooth (5) on the gear wheel (2-3).The cross section of dish type tooth (3) can be triangle, half garden shape, trapezoidal, wedge shape or other any Reasonable Shape.According to Different Strata character and drilling well requirement, dish type tooth (3) can arrange that with certain helical angle the size of interdental space also will be with the difference difference on boring stratum along gear wheel (2).Continuous dish type gear ring can directly be processed on lathe or milling machine and obtain, and for improving the abrasion resistance of dish type tooth (3), can inlay on its surface or other high-abrasive material of built-up welding.Inserted (4) available dedicated drilling machine is at the surperficial subdrilling perforation of gear wheel (2), and the carbide alloy tooth that will form by a firing is in advance again pressed in people's perforation, keeps certain magnitude of interference to get final product.The profile of tooth of inserted (4) can be taper, wedge shape, wooden dipper shape, sphere etc.Steel-tooth (5) can cut out tooth by machining, then by heat treatment or apply the weldering tungsten carbide to improve its abrasion resistance.Whole process and existing rock bit basically identical can not increase processing cost.Tooth on the gear wheel is arranged and can be adjusted arbitrarily as required.
Claims (1)
1. compound tooth-shaped rock bit, mainly form by tooth pawl (1) and the gear wheel (2) that is installed on the tooth pawl (1), can be single cone, three gear wheels, polydonita wheel drill bit, it is characterized in that: the tooth on the gear wheel have adopted dish type tooth (3), inserted (4) and steel-tooth (5) combination layout mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99251810 CN2421403Y (en) | 1999-12-24 | 1999-12-24 | Composite tooth rock roller bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99251810 CN2421403Y (en) | 1999-12-24 | 1999-12-24 | Composite tooth rock roller bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2421403Y true CN2421403Y (en) | 2001-02-28 |
Family
ID=34036160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99251810 Expired - Fee Related CN2421403Y (en) | 1999-12-24 | 1999-12-24 | Composite tooth rock roller bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2421403Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461155A (en) * | 2017-03-30 | 2017-12-12 | 西南石油大学 | A kind of geothermal exploration drilling well high speed tricone bit |
| WO2020062741A1 (en) * | 2018-09-26 | 2020-04-02 | 西南石油大学 | Efficient composite drill bit suitable for deep well stratum difficult to drill |
-
1999
- 1999-12-24 CN CN 99251810 patent/CN2421403Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461155A (en) * | 2017-03-30 | 2017-12-12 | 西南石油大学 | A kind of geothermal exploration drilling well high speed tricone bit |
| WO2020062741A1 (en) * | 2018-09-26 | 2020-04-02 | 西南石油大学 | Efficient composite drill bit suitable for deep well stratum difficult to drill |
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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 |