CN203452652U - PDC (polycrystalline diamond compact) drilling bit - Google Patents
PDC (polycrystalline diamond compact) drilling bit Download PDFInfo
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- CN203452652U CN203452652U CN201320520000.5U CN201320520000U CN203452652U CN 203452652 U CN203452652 U CN 203452652U CN 201320520000 U CN201320520000 U CN 201320520000U CN 203452652 U CN203452652 U CN 203452652U
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- drilling bit
- pdc
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- gauge
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Abstract
The utility model relates to a PDC (polycrystalline diamond compact) drilling bit, and belongs to a rock breaking tool in the project of oil gas drilling. The PDC drilling bit mainly comprises a drill bit body, a sprayer, PDC cutting teeth, a central convex tooth, a main cutter wing, a secondary cutter wing and gauge protection teeth; the technical scheme is that the gauge protection teeth are spherical, inverted cylindrical and cylindrical, and are mounted at the peripheral position of each cutter wing gauge protection section; the shape of the central convex tooth is conical and is embedded in the central position of the drilling bit body. The gauge protection teeth can enable the drilling bit to stably work, and the longitudinal vibration and horizontal vibration caused by rock breaking of the drilling bit are reduced, so the service life of the drilling bit is greatly prolonged and a protection effect for underground tools is also realized; in addition, local stress concentration can be generated in the center of a well due to the existence of the central convex tooth, so the rock breaking efficiency of the central region of the center of the well is improved.
Description
Technical field
The utility model relates to a kind of PDC drill bit, belongs to a kind of rock crushing tool in oil-gas mining engineering, is applicable to hard formation drilling well, can greatly reduce the oscillation intensity of drill bit.
Technical background
Because conventional PDC drill bit has the advantages such as rate of penetration is fast, the life-span long, drilling depth is many at middle soft formation, so be widely used in oil and gas well drilling.But along with oil-gas mining is to deep-well, ultradeep well and hard formation development, current existing conventional PDC drill bit is when boring hard formation, because vibration has acutely badly influenced the life-span of drill bit and downhole tool, so be badly in need of the drilling tool that a kind of not only efficiency of breaking rock is high but also oscillation intensity is little.
PDC drill bit with gauge teeth can make drill bit smooth working, reduces extensional vibration and oscillation crosswise that the broken rock of drill bit produces, thereby can significantly extend bit life, and downhole tool is also had to protective effect; In addition, center double wedge can produce stress raisers at broken Keng center, improve the efficiency of breaking rock of well central area.
Summary of the invention
For the problems referred to above, the utility model spy provides a kind of PDC drill bit.Its technical scheme is: a kind of PDC drill bit, mainly comprises bit body 1, nozzle 2, PDC cutting teeth 3, center double wedge 4, the operator wing 5, secondary wing 6 and gauge teeth 7; Its architectural feature is: the shape and structure of center double wedge 4 is taper, is embedded in the center of bit body 1; The operator wing 5 is that 2-3 is individual uniform, and secondary wing 6 is that 3-4 is individual uniform; Gauge teeth 7 is arranged on each wing gauge section circumferential position; PDC cutting teeth 3 is single layout or double layout.
The planform of described gauge teeth be spherical, rounding is cylindrical and cylindrical, material is carbide alloy, each wing gauge section is installed 1～5 gauge teeth.
The utility model compared with prior art, its beneficial effect is: the conventional PDC drill bit that (1) is used at present vibrates acutely in hard formation drilling well, bit life is short, after adopting the utility model, will greatly improve the stability of crushing efficiency and the drill bit of rock, for shortening well construction period, save drilling cost and reducing vibration, the destruction of downhole tool is had to positive role; (2) be applicable to various hard formations.
Accompanying drawing explanation
Fig. 1 is the front view of a kind of PDC drill bit of the utility model.
Fig. 2 is the lateral view of a kind of PDC drill bit of the utility model.
Fig. 3 is the rear elevation of a kind of PDC drill bit of the utility model.
The structural representation that in Fig. 4,4-1 to 4-3 is gauge teeth, Fig. 4-1 is hemi-spherical ended shape insert, and 4-2 is rounding cylin-drical tooth, and 4-3 is cylin-drical tooth.
In figure: 1. bit body, 2. nozzle, 3.PDC cutting teeth ，4. center double wedge, 5. the operator wing, 6. secondary wing, 7. gauge teeth.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As Figure 1-3, the utility model PDC drill bit, mainly comprise bit body 1, nozzle 2, PDC cutting teeth 3, center double wedge 4, the operator wing 5, secondary wing 6 and gauge teeth 7, its architectural feature is: the shape and structure of center double wedge 4 is taper, is embedded in the center of bit body 1; The operator wing 5 is that 2-4 is individual uniform, and secondary wing 6 is that 3-4 is individual uniform; Gauge teeth 7 is arranged on each wing gauge section circumferential position; PDC cutting teeth 3 is single layout or double layout.
As shown in Figure 4, that the utility model gauge teeth 7 can be designed to is as required spherical, rounding is cylindrical, cylindrical, and its material is carbide alloy.Gauge teeth 7 can reduce extensional vibration and the oscillation crosswise that the broken rock of drill bit produces, thereby can significantly extend bit life, and downhole tool is also had to protective effect.Center double wedge 4 is shaped as taper, cylinder and bizet, consists of, and material is composited by polycrystalline diamond layer and hard alloy substrate, and center double wedge 4 can improve the efficiency of breaking rock of well central area.
Claims (2)
1. a PDC drill bit, mainly comprises bit body (1), nozzle (2), PDC cutting teeth (3), center double wedge (4), the operator wing (5), secondary wing (6) and gauge teeth (7); Its architectural feature is: the shape and structure of center double wedge (4) is taper, is embedded in the center of bit body (1); The operator wing (5) is that 2-3 is individual uniform, and secondary wing (6) is that 3-4 is individual uniform; Gauge teeth (7) is arranged on each wing gauge section circumferential position; PDC cutting teeth (3) is single layout or double layout.
2. PDC drill bit according to claim 1, is characterized in that: the planform of described gauge teeth (7) be spherical, rounding is cylindrical and cylindrical, material is carbide alloy, each wing gauge section is installed 1～5 gauge teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320520000.5U CN203452652U (en) | 2013-08-26 | 2013-08-26 | PDC (polycrystalline diamond compact) drilling bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320520000.5U CN203452652U (en) | 2013-08-26 | 2013-08-26 | PDC (polycrystalline diamond compact) drilling bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203452652U true CN203452652U (en) | 2014-02-26 |
Family
ID=50132538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320520000.5U Expired - Fee Related CN203452652U (en) | 2013-08-26 | 2013-08-26 | PDC (polycrystalline diamond compact) drilling bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203452652U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593307A (en) * | 2017-01-21 | 2017-04-26 | 刘伟 | Dynamic-static type double-stage PDC drill bit |
| CN107100574A (en) * | 2017-05-10 | 2017-08-29 | 中国海洋石油总公司 | A kind of integral type sidetracking window opening tool assembly |
-
2013
- 2013-08-26 CN CN201320520000.5U patent/CN203452652U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593307A (en) * | 2017-01-21 | 2017-04-26 | 刘伟 | Dynamic-static type double-stage PDC drill bit |
| CN107100574A (en) * | 2017-05-10 | 2017-08-29 | 中国海洋石油总公司 | A kind of integral type sidetracking window opening tool assembly |
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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: 20140226 Termination date: 20140826 |
|
| EXPY | Termination of patent right or utility model |