CN201546626U - Inner concave conical composite slice for PDC drill - Google Patents
Inner concave conical composite slice for PDC drill Download PDFInfo
- Publication number
- CN201546626U CN201546626U CN2009202430723U CN200920243072U CN201546626U CN 201546626 U CN201546626 U CN 201546626U CN 2009202430723 U CN2009202430723 U CN 2009202430723U CN 200920243072 U CN200920243072 U CN 200920243072U CN 201546626 U CN201546626 U CN 201546626U
- Authority
- CN
- China
- Prior art keywords
- inner concave
- concave conical
- composite slice
- pdc drill
- slice
- 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 - Lifetime
Links
Images
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The utility model provides an inner concave conical composite slice for a PDC drill, belonging to the technical field of a petroleum drilling device. The composite slice comprises a hard alloy matrix and an inner concave conical diamond surface pressure-welded on the matrix; when being used for cutting soft formations, the inner concave conical composite slice is sharper than a cylindrical composite slice; therefore, the inner concave conical composite slice is more easily wedged into the formation, thus obtaining higher cutting efficiency. The inner concave conical composite slice is suitable for being used on the drill drilling the soft formation.
Description
Technical field
The utility model relates to a kind of composite sheet of the PDC of making drill bit.Belong to the oil drilling tool technical field.
Background technology
The PDC drill bit is a kind of diamond bit of extensive use in present oil, the natural gas drilling.The cutting teeth of this drill bit is made of hard alloy substrate and the diamond top layer that is crimped on the matrix.Also be called " diamond compact ".The used composite sheet of PDC drill bit all is columniform now, and the upper surface of cylinder and the angle between side surface are 90 °, is 90 ° with regard to the angle of wedge that has determined PDC bit cutting tooth also therefore.90 ° of angle of wedge good impact resistance, but sharp inadequately, be unfavorable for wedging those soft formations to obtain higher stock-removing efficiency.
The utility model content
The purpose of this utility model is the shortcoming that overcomes the difficult wedging stratum of existing cylindrical composite sheet, the indent taper composite sheet that provides a kind of PDC drill bit to use.
This indent taper composite sheet is made of hard alloy substrate and the diamond top layer that is crimped on the matrix, it is characterized in that described diamond top layer is indent taper top layer.This indent taper composite sheet is sharper than the cylindrical composite sheet, when being used for the cutting of those soft formations, being easier to wedge the stratum and obtaining higher stock-removing efficiency.
Provide embodiment below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the vertical view of Fig. 1
The specific embodiment
Referring to Fig. 1～2, this indent taper composite sheet is made of hard alloy substrate 1 and the indent taper diamond top layer 2 that is crimped on the matrix 1.
Claims (1)
1. the indent taper composite sheet that the PDC drill bit is used is made of hard alloy substrate and the diamond top layer that is crimped on the matrix, it is characterized in that described diamond top layer is indent taper top layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202430723U CN201546626U (en) | 2009-11-09 | 2009-11-09 | Inner concave conical composite slice for PDC drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202430723U CN201546626U (en) | 2009-11-09 | 2009-11-09 | Inner concave conical composite slice for PDC drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201546626U true CN201546626U (en) | 2010-08-11 |
Family
ID=42601800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202430723U Expired - Lifetime CN201546626U (en) | 2009-11-09 | 2009-11-09 | Inner concave conical composite slice for PDC drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201546626U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104428484A (en) * | 2012-06-22 | 2015-03-18 | 贝克休斯公司 | Cutting element, tool and method of cutting within borehole |
-
2009
- 2009-11-09 CN CN2009202430723U patent/CN201546626U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104428484A (en) * | 2012-06-22 | 2015-03-18 | 贝克休斯公司 | Cutting element, tool and method of cutting within borehole |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201202408Y (en) | Polycrystalline diamond hard alloy composite sheet grooving on surface | |
| CN202249769U (en) | Drill bit for petroleum exploration | |
| CN201778708U (en) | Embedded rock core grabber of coring tool | |
| CN202176265U (en) | Polycrystalline diamond compact (PDC) drill | |
| CN204098789U (en) | A kind of PDC drill bit being applicable to plastic formation | |
| CN201546626U (en) | Inner concave conical composite slice for PDC drill | |
| CN202017455U (en) | Compound impregnated bit | |
| CN201560714U (en) | PDC aiguille suitable for drilling soft horizon | |
| CN201581813U (en) | Soft soil foundation multifunctional spiral anchor rod bit | |
| CN201496070U (en) | Construction equipment of refuse filler gas-gathering well of refuse landfill site | |
| CN203822167U (en) | Ice layer and ice-rock sandwich polycrystalline diamond compact (PDC) coring bit | |
| CN203114176U (en) | Roller cone PDC combination tooth drill bit | |
| CN202249737U (en) | Rotary core drill | |
| CN202451062U (en) | Sinusoidal diamond hard alloy composite sheet | |
| CN211008464U (en) | Wear-resistant drill bit of rotary drilling rig | |
| CN203756042U (en) | Step type gauge drill bit | |
| CN202706923U (en) | Reinforced polycrystalline diamond compact (PDC) drill | |
| CN204476287U (en) | Composite teeth | |
| CN201474615U (en) | Wedge diamond hard alloy composite slice | |
| CN206987738U (en) | A kind of plow formula composite polycrystal-diamond | |
| CN102364032B (en) | Fixed cutting-tooth drilling bit | |
| CN209385065U (en) | A kind of quick diamond compact bit | |
| CN203769697U (en) | Under-size gauge coring bit | |
| CN203081297U (en) | Drilling machine for petroleum geological exploration | |
| CN205314922U (en) | Wing formula composite drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100811 |