CN2051278U - Step compound blade bit - Google Patents
Step compound blade bit Download PDFInfo
- Publication number
- CN2051278U CN2051278U CN 89214767 CN89214767U CN2051278U CN 2051278 U CN2051278 U CN 2051278U CN 89214767 CN89214767 CN 89214767 CN 89214767 U CN89214767 U CN 89214767U CN 2051278 U CN2051278 U CN 2051278U
- Authority
- CN
- China
- Prior art keywords
- bit
- wing
- step compound
- gauge teeth
- compound blade
- 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.)
- Withdrawn
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- Earth Drilling (AREA)
Abstract
The utility model provides a step compound blade bit which is applied for the use of petroleum and geology drilling. The utility model has the advantages of safe application and long drilling time. The utility model is suitable for the drilling of any stratums. The step compound blade bit is composed of a bit body, teeth, a cutter wing, a nozzle, gauge teeth, etc. The step compound blade bit uses a plurality of cutter wings with different radii on the different cross sections to break the stratum and ensures the wellbore quality under the effect of the gauge teeth.
Description
The utility model relates to a kind of oil, geological drilling drill bit.Be applied to oil at present, geological drilling has rock bit, drag bit, PDC drill bit with drill bit.The cone shedding fault takes place in rock bit easily; Moment of torsion was bigger when drag bit crept into, and was easy to damage drilling tool and equipment, was difficult for shackle simultaneously; The PDC drill bit is easy to generate mud drum and causes the difficulty that makes a trip when creeping into.
The purpose of this utility model is to overcome the defective that above-mentioned various drill bit brings, and proposes a kind of novelty, safety, drilling time length, is difficult for mud drum, and staged compact bit smoothly makes a trip.
The utility model mainly is made up of bit body, tooth, wing, nozzle, gauge teeth.
Fig. 1 staged compact bit structure chart.
Describe in detail below in conjunction with accompanying drawing: such as Fig. 1, screw thread 9 is arranged at the top of bit body 1, and there is cavity 10 inside, and the bottom is that variable-diameter structure and end 5 are minimum diameter, and its end face is that curved surface is embedded with tooth 2 and is provided with hydrophthalmia and the nozzle 7 that is communicated with cavity 10. The garden is provided with gauge teeth 8 outside the bottom. The garden is provided with wing 3,4 outside the middle part, and gauge teeth 6 is arranged respectively on wing 3,4, and end 5 and wing 3,4 are on different cross section, and diameter increases to standard size step by step. Wing 3,4 can be parallel with the bus of bit body 1 or be obliquely installed that wing 3,4 is respectively more than two. Gauge teeth 6,8 is vertical sharp cutting edge of a knife or a sword wave groove.
Embodiment: the staged compact bit is during near the shaft bottom, and the circular of bit body 1 end 5 partly contacts stratum and fractured rock at first, and it be basic broken diameter, and plays guiding function, and gauge teeth 8 assurance diameters are constant.Increase along with well depth, wing 3 contact stratum and fractured rocks on the bit body 1 middle part cylindrical, gauge teeth 6 guarantees that diameter is constant, and then wing 4 contact stratum and fractured rocks, so that hole diameter reaches the standard size of well, guarantees the well rule under the effect of gauge teeth 6.Drilling fluid by hydrophthalmia and nozzle 7 broken landwaste bands from the shaft bottom, avoid Repeated Cutting.The drill bit structure that the utility model is designed, a kind of composite sheet that is made of wing 3,4 is provided, and bit body 1 makes drill bit form the figure of ladder on the whole, the mode of creeping into that makes drill bit staged in creeping in layer enter fractured rock, can guarantee drill teeth 2 under the effect of mud, can mud drum.During trip-out, wing on the bit body 13,4 contacts the effect of setting upright of playing with the borehole wall, can not cause the phenomenon of " pulling out piston ", guarantees to pull out of hole smoothly.
Claims (3)
1, a kind of staged compact bit that comprises that bit body, tooth constitute, screw thread 9 is arranged at the top that it is characterized in that bit body 1, there is cavity 10 inside, the bottom is that variable-diameter structure and end 5 are minimum diameter, its end face is that curved surface is embedded with tooth 2 and is provided with hydrophthalmia and the nozzle 7 that is communicated with cavity 10, the bottom cylindrical is provided with gauge teeth 8, the middle part cylindrical is provided with wing 3,4, on wing 3,4, gauge teeth 6 is arranged respectively, end 5 and wing 3,4 are on different cross section, and diameter increases to standard size step by step.
2, staged compact bit according to claim 1 is characterized in that wing 3,4 ' be parallel with the bus of bit body 1 or is obliquely installed that wing 3,4 is respectively more than two.
3,, it is characterized in that gauge teeth 6,8 is the longitudinal wave groove according to claim 1 described staged compact bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89214767 CN2051278U (en) | 1989-08-08 | 1989-08-08 | Step compound blade bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89214767 CN2051278U (en) | 1989-08-08 | 1989-08-08 | Step compound blade bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2051278U true CN2051278U (en) | 1990-01-17 |
Family
ID=4870486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89214767 Withdrawn CN2051278U (en) | 1989-08-08 | 1989-08-08 | Step compound blade bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2051278U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680271B (en) * | 2007-05-25 | 2012-08-29 | 李光益 | Hammer bit |
| EP2167780A4 (en) * | 2007-05-30 | 2015-11-11 | Halliburton Energy Services Inc | Rotary drill bit with gage pads having improved steerability and reduced wear |
-
1989
- 1989-08-08 CN CN 89214767 patent/CN2051278U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680271B (en) * | 2007-05-25 | 2012-08-29 | 李光益 | Hammer bit |
| EP2167780A4 (en) * | 2007-05-30 | 2015-11-11 | Halliburton Energy Services Inc | Rotary drill bit with gage pads having improved steerability and reduced wear |
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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 |