CN201011297Y - Chip discharging structure of tricone roller bit - Google Patents
Chip discharging structure of tricone roller bit Download PDFInfo
- Publication number
- CN201011297Y CN201011297Y CNU2006200973863U CN200620097386U CN201011297Y CN 201011297 Y CN201011297 Y CN 201011297Y CN U2006200973863 U CNU2006200973863 U CN U2006200973863U CN 200620097386 U CN200620097386 U CN 200620097386U CN 201011297 Y CN201011297 Y CN 201011297Y
- Authority
- CN
- China
- Prior art keywords
- chip removal
- bit
- nozzle
- guiding gutter
- tricone
- 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 three roller bit used in the drilling fields of petroleum, mine and geology, in particular to the chips escaping structure of the three roller bit, comprising three teeth palms which are integrated and teeth wheels which are arranged at the bottom of the teeth palms, a nozzle seat is arranged at the external side of the superior part of the tooth palm, and a nozzle is arranged in the nozzle seat, the difference is that a chip escape blast groove is arranged at the external side of the nozzle seat, and the chip escape blast groove is deflected along the upper right direction of the tooth wheel, the deflection angle is 30 to 90 DEGs. The useful effect of the utility model is that utilizing the jet action of the jetting of the nozzle, and a chip escape blast groove arranged at the veranda of the nozzle seat which has the biggest returns on the slurry, plays roles of stream guidance and guiding and water-spreading accelerating to the up-return of the slurry, obviously increasing the chip escape performance of the three roller bit, thereby effectively reducing the iterative crushing, improving the drilling rate and the rock removal efficiency of the bit machinery.
Description
Technical field
The utility model relates to the tricone bit of a kind of oil, mine, the use of geological drilling field, relates in particular to the chip removal structure of tricone bit.
Background technology
Tricone bit is made up of gear wheel, bit leg, nozzle etc., gear wheel is installed on the axle journal of bit leg lower end, the integrally welded formation bit body in bit leg top, and nozzle is arranged on the bit body week nozzle carrier laterally, drilling mud sprays to the shaft bottom by nozzle, cleans gear wheel and shaft bottom; Bit body gabarit and well form annular chip removal space, and shaft bottom mud cutting carring is through returning ground on the annular chip removal space.
The annular chip removal space of existing tricone bit gabarit is provided with also unreasonable, on return passage and only account for about 8% of shaft bottom projected area, and shortage water conservancy diversion guide frame causes returning on the mud obstructed, influences the shaft bottom cleaning performance; The shaft bottom landwaste returns on can not be in time, can cause the repetition fragmentation, reduce bit speed, has also quickened the wearing and tearing of bit leg, gear wheel simultaneously.
According to hydrokinetics calculation and experimental analysis, shaft bottom mud major part is returned from the passage between the nozzle carrier bulge and the bit body palm back of the body, but the guiding usefulness of this passage is limited, thereby influences the chip removal and the drilling well power of tricone bit.
Summary of the invention
Technical problem to be solved in the utility model is the deficiency that exists at above-mentioned prior art and design the chip removal structure that a kind of chip resistance can better tricone bit.
The utility model is realized by following technical scheme: comprise three gear wheels 3 that connect the bit leg 2 of all-in-one-piece and be installed in the bit leg lower end, the bit leg upper outside is provided with nozzle carrier 6, nozzle 5 is installed in the nozzle carrier 6, and its difference is at nozzle carrier arranged outside chip removal guiding gutter.
Press such scheme, to deflection, angle of deflection is 30 °～90 ° to described chip removal guiding gutter along the gear wheel upper right side.
Press such scheme, the width of described chip removal guiding gutter is 10～150mm; Guide frame can be not wide, is low wide and up narrow shape, and the width ratio is 0.5～1 up and down.
The beneficial effects of the utility model are: utilize the jet action of nozzle ejection, the nozzle carrier gabarit of the amount of returning maximum is provided with the chip removal guiding gutter on mud, play water conservancy diversion guiding of returning on the mud and the effect of quickening drainage, the chip removal performance of tricone bit is significantly improved, repeat fragmentation thereby effectively reduce, improve drill bit rate of penetration and efficiency of breaking rock.
Description of drawings
Fig. 1 is the structure chart of existing tricone bit.
Fig. 2 faces structure chart for embodiment of the utility model.
The specific embodiment
Further specify embodiment of the present utility model below in conjunction with accompanying drawing.Tricone bit comprises that three connect the bit leg 2 of all-in-one-piece and are installed in the gear wheel on the end-journal 3 under the bit leg, install tooth 4 on the gear wheel, circumferentially be provided with three nozzle carriers 6 on the bit body of bit leg 2 upper outside, nozzle 5 is installed in the nozzle carrier 6, the bit body upper end is provided with connecting thread 1, connects with drilling rod, and the nozzle spout down, mud sprays to the shaft bottom by nozzle 5, returns through on the annular space then.Returning passage on main is nozzle carrier 6 and passage 7, in nozzle carrier 6 gabarits the chip removal guiding gutter is set, the chip removal guiding gutter is the groove shape in the shape of a spiral, rotation direction is dextrorotation (opposite with the gear wheel direction of rotation), angle of deflection is 45 °～75 °, the width of chip removal guiding gutter is 10～150mm, determines that according to gear wheel specification size the groove depth of chip removal guiding gutter can be 1/4～1/10 of width; The chip removal guiding gutter is low wide and up narrow shape, and upper end groove width A becomes gradient to shrink less than lower end groove width B from the bottom to top, and groove width is 0.5～1 than A/B up and down.In the present embodiment, α is 75 °, and the width of chip removal guiding gutter is 70mm, and groove width is 1 than A/B up and down, and groove depth is 13mm, experimentizes on the drill bit experimental stand, and experimental result chip removal rate improves 16.6% than conventional bit.
Claims (6)
1. the chip removal structure of a tricone bit comprises three gear wheels that connect the bit legs of all-in-one-pieces and be installed in the bit leg lower end, and the bit leg upper outside is provided with nozzle carrier, and nozzle is installed in the nozzle carrier, it is characterized in that at nozzle carrier arranged outside chip removal guiding gutter.
2. by the chip removal structure of the described tricone bit of claim 1, it is characterized in that described chip removal guiding gutter along the gear wheel upper right side to deflection, angle of deflection is 30 °～90 °.
3. by the chip removal structure of claim 1 or 2 described tricone bits, the width that it is characterized in that described chip removal guiding gutter is 10～150mm.
4. by the chip removal structure of the described tricone bit of claim 3, it is characterized in that the chip removal guiding gutter is low wide and up narrow shape, upper end groove width A becomes gradient to shrink less than lower end groove width B from the bottom to top, and groove width is 0.5～1 than A/B up and down.
5. by the chip removal structure of the described tricone bit of claim 2, it is characterized in that described chip removal guiding gutter angle of deflection is 45 °～75 °.
6. by the chip removal structure of the described tricone bit of claim 3, the groove depth that it is characterized in that described chip removal guiding gutter is 1/4～1/10 of a width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200973863U CN201011297Y (en) | 2006-06-23 | 2006-06-23 | Chip discharging structure of tricone roller bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200973863U CN201011297Y (en) | 2006-06-23 | 2006-06-23 | Chip discharging structure of tricone roller bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201011297Y true CN201011297Y (en) | 2008-01-23 |
Family
ID=39046241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200973863U Expired - Fee Related CN201011297Y (en) | 2006-06-23 | 2006-06-23 | Chip discharging structure of tricone roller bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201011297Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967956A (en) * | 2010-03-09 | 2011-02-09 | 江汉石油钻头股份有限公司 | Tricone bit used for high-rotation speed drilling |
| WO2016070821A1 (en) * | 2014-11-07 | 2016-05-12 | 湖北鸣利来冶金机械科技有限公司 | Deslagging type palm for tricone bit |
| CN109519128A (en) * | 2019-01-18 | 2019-03-26 | 沧州格锐特钻头有限公司 | A kind of gear wheel-PDC cutting structure composite drill bit |
-
2006
- 2006-06-23 CN CNU2006200973863U patent/CN201011297Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967956A (en) * | 2010-03-09 | 2011-02-09 | 江汉石油钻头股份有限公司 | Tricone bit used for high-rotation speed drilling |
| CN101967956B (en) * | 2010-03-09 | 2013-06-05 | 江汉石油钻头股份有限公司 | Tricone bit used for high-rotation speed drilling |
| WO2016070821A1 (en) * | 2014-11-07 | 2016-05-12 | 湖北鸣利来冶金机械科技有限公司 | Deslagging type palm for tricone bit |
| CN109519128A (en) * | 2019-01-18 | 2019-03-26 | 沧州格锐特钻头有限公司 | A kind of gear wheel-PDC cutting structure composite drill bit |
| CN109519128B (en) * | 2019-01-18 | 2024-02-23 | 沧州格锐特钻头有限公司 | Composite drill bit with cone-PDC cutting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080123 Termination date: 20150623 |
|
| EXPY | Termination of patent right or utility model |