CN205713995U - A kind of PDC drill bit - Google Patents
A kind of PDC drill bit Download PDFInfo
- Publication number
- CN205713995U CN205713995U CN201620447666.6U CN201620447666U CN205713995U CN 205713995 U CN205713995 U CN 205713995U CN 201620447666 U CN201620447666 U CN 201620447666U CN 205713995 U CN205713995 U CN 205713995U
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- wing
- drill bit
- pdc drill
- bit
- diamond
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Abstract
A kind of PDC drill bit, relate to a kind of oil and gas well drilling drill bit, it includes the runner constituted between bit matrix, the wing being arranged on bit matrix, wing, the nozzle bore being arranged on bit matrix, cutting tooth and damping tooth it is provided with on wing, cutting tooth inlays the front end being welded on wing, damping tooth inlays the side being welded on wing, and wing end face is provided with composite polycrystal-diamond.This utility model provides a kind of PDC drill bit, composite polycrystal-diamond on each wing and the wear-resistant coating of bit matrix add the service life of drill bit, the problem that the composite polycrystal-diamond that wing end face is arranged solves the difficulty that pulls out of hole caused due to necking down.
Description
Technical field
This utility model relates to a kind of oil and gas well drilling drill bit, particularly relates to a kind of PDC drill bit.
Background technology
PDC drill bit is the abbreviation of polycrystalline diamond compact bit, and PDC drill bit is the important tool in drilling engineering, suitable
Drilling tool in oil, natural gas and geological prospecting drilling process, it can improve bit speed and drilling quality.Market at present
On PDC drill bit mainly by increasing the wearability of drill bit at drill bit head welding PDC alloy block.
Complicated yet with underground working, still it is difficult to satisfactory its service life, alloy abrasion condition is serious significantly
Reduce the service life of drill bit.Additionally at drilling process it sometimes appear that necking, cause trip-out difficulty also to become anxious and treat
The difficult problem solved.
Utility model content
This utility model is for the shortcoming solving above-mentioned prior art, it is provided that a kind of PDC drill bit, this drill bit can increase
The anti-wear performance of drill bit, it is possible to the problem solving the difficulty that pulls out of hole that necking down causes.
This utility model is achieved in that a kind of PDC drill bit, and it includes bit matrix, is arranged on bit matrix
The runner constituted between wing, wing, the nozzle bore being arranged on bit matrix, wing is provided with cutting tooth and damping tooth,
Cutting tooth inlays the front end being welded on wing, and damping tooth inlays the side being welded on wing, and wing end face is provided with glomerocryst Buddha's warrior attendant
Stone composite sheet.
The end face of described each wing is provided with at least one row's composite polycrystal-diamond.Often row's polycrystalline diamond is combined
The quantity of sheet is more than or equal to 1.
Described cutting tooth main body is cylindrical, one end be the arc surface other end be plane, plane one end is towards wing
Outside, arc surface one end is towards the inner side of wing, and is partially submerged in wing.
Described cutting tooth and damping tooth are composite polycrystal-diamond.
Wear-resistant coating is had outside described bit matrix.
Described nozzle bore is screwed hole.
The quantity of described wing is 5.
The quantity of described nozzle bore is 5.
Relative to prior art, the beneficial effects of the utility model are: this utility model provides a kind of PDC drill bit, often
Composite polycrystal-diamond on individual wing and the wear-resistant coating of bit matrix add the service life of drill bit, wing end face
The composite polycrystal-diamond arranged solves the difficult problem that pulls out of hole caused due to necking down.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the plan structure schematic diagram of Fig. 1.
Wherein, 1, wing, 2, runner, 3, nozzle bore, 4, cutting tooth, 5, damping tooth, 6, the polycrystalline diamond of wing end face
Composite sheet, 7, wing end face.
Detailed description of the invention
As shown in Figure 1-2, when drill bit is in running order, in direction of rotation, the preceding one side of wing is above, and above
The one side intersecting, being positioned at radial outside is side, before be front end with intersection, side, the face of wing top is wing top
Face.
A kind of PDC drill bit, it includes bit matrix, the runner that constitutes between the wing 1 that is arranged on bit matrix, wing
2, the nozzle bore 3 being arranged on bit matrix, wing is provided with cutting tooth 4 and damping tooth 5, and cutting tooth 4 is inlayed and is welded on cutter
The front end of the wing 1, damping tooth 5 inlays the side being welded on wing 1, and the material of cutting tooth 4 and damping tooth 5 is that polycrystalline diamond is combined
Sheet.Wing 1 is spiral to be distributed on bit matrix, forms runner 2, for drilling process between two adjacent wings 1
The discharge of middle mud.Nozzle bore 3 for screwed hole, this screw thread is used for installing nozzle, in drilling process, the liquid of nozzle ejection
Wing 1 is had cooling and cleaning effect, prevents mud from wrapping drill bit.PDC cutting tooth 4 in working order in be used for cut ground
Layer, PDC damping tooth 5, for reducing drill bit vibration of side when underground work, protects bit matrix and cutting tooth 4.
Because drilling process is it sometimes appear that necking, the phenomenon farthest reducing bit freezing during in order to pull out of hole goes out
Existing, improve the quality of drilling well, wing end face 7 is provided with composite polycrystal-diamond 6.The end face of each wing 1 can be arranged
1, the composite polycrystal-diamond 6 of the row of any one integer such as 2,3,4, often the quantity of row's composite polycrystal-diamond 6 can
Think any one integer such as 1,2,3,4.Such the abrasion of drill bit when can reduce trip-out is set, extends the use longevity of drill bit
Life.Improve the quality of drilling well.
Described cutting tooth 4 main body is cylindrical, one end be the arc surface other end be plane, plane one end is towards wing
Outside, arc surface one end is towards the inner side of wing, and is partially submerged in wing.The cutting tooth 4 so arranged can not only be firm
Be fixed on bit matrix, moreover it is possible to play shear action to greatest extent.
In order to improve the wearability of drill bit, improve the service life of drill bit, outside bit matrix, have wear-resistant coating.
The quantity of described wing 1 is 5.
The quantity of described nozzle bore 3 is 5.
In use, the wear-resistant coating of the composite polycrystal-diamond on each wing 1 and bit matrix increases
In the service life of drill bit, the composite polycrystal-diamond 6 that wing end face 7 is arranged solves the trip-out difficulty caused due to necking down
Problem.
Embodiment described above, the simply one of this utility model more preferably detailed description of the invention, the skill of this area
The usual variations and alternatives that art personnel are carried out in the range of technical solutions of the utility model are intended to be included in guarantor of the present utility model
In the range of protecting.
Claims (9)
1. a PDC drill bit, it is characterised in that: it includes bit matrix, the wing (1) that is arranged on bit matrix, wing it
Between constitute runner (2), the nozzle bore (3) that is arranged on bit matrix, wing is provided with cutting tooth (4) and damping tooth (5),
The front end being welded on wing (1) is inlayed in cutting tooth (4), and damping tooth (5) inlays the side being welded on wing (1), wing end face (7)
It is provided with composite polycrystal-diamond (6).
PDC drill bit the most according to claim 1, it is characterised in that: the end face of described each wing (1) is provided with at least
One row's composite polycrystal-diamond (6).
PDC drill bit the most according to claim 2, it is characterised in that: the number of described often row composite polycrystal-diamond (6)
Amount is more than or equal to 1.
PDC drill bit the most according to claim 1, it is characterised in that: described cutting tooth (4) main body is cylindrical, one end
Being plane for the arc surface other end, plane one end is towards the outside of wing, and arc surface one end is towards the inner side of wing, and part is embedding
Enter in wing.
PDC drill bit the most according to claim 1, it is characterised in that: described cutting tooth (4) and the material of damping tooth (5)
For composite polycrystal-diamond.
PDC drill bit the most according to claim 1, it is characterised in that: there is wear-resistant coating outside described bit matrix.
PDC drill bit the most according to claim 1, it is characterised in that: described nozzle bore (3) is screwed hole.
PDC drill bit the most according to claim 1, it is characterised in that: the quantity of described wing (1) is 5.
PDC drill bit the most according to claim 1, it is characterised in that: the quantity of described nozzle bore (3) is 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620447666.6U CN205713995U (en) | 2016-05-17 | 2016-05-17 | A kind of PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620447666.6U CN205713995U (en) | 2016-05-17 | 2016-05-17 | A kind of PDC drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205713995U true CN205713995U (en) | 2016-11-23 |
Family
ID=57299006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620447666.6U Active CN205713995U (en) | 2016-05-17 | 2016-05-17 | A kind of PDC drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205713995U (en) |
-
2016
- 2016-05-17 CN CN201620447666.6U patent/CN205713995U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |