CN203905822U - Tire body type PDC (Polycrystalline Diamond Compact) drill bit - Google Patents
Tire body type PDC (Polycrystalline Diamond Compact) drill bit Download PDFInfo
- Publication number
- CN203905822U CN203905822U CN201420014472.8U CN201420014472U CN203905822U CN 203905822 U CN203905822 U CN 203905822U CN 201420014472 U CN201420014472 U CN 201420014472U CN 203905822 U CN203905822 U CN 203905822U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- wing
- body type
- tire body
- cutter wings
- 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 tire body type PDC (Polycrystalline Diamond Compact) drill bit. The tire body type PDC drill bit comprises a drill bit connector (1) and a drill bit crown part (2), wherein the drill bit crown part (2) is arranged above the drill bit connector (1), the outer surface of the drill bit crown part (2) is provided with main cutter wings (3) and auxiliary cutter wings (4), the main cutter wings (3) and the auxiliary cutter wings (4) are arranged at intervals, the upper sides of the main cutter wings (3) and the upper sides of the auxiliary cutter wings (4) are uniformly provided with rectangular PDCs (5), the lower sides of the main cutter wings (3) and the lower sides of the auxiliary cutter wings (4) are uniformly provided with cylindrical PDCs (6), and the top surface of the drill bit crown part (2) is also provided with replaceable spray nozzles (8) and fixed spray nozzles (9). The tire body type PDC drill bit disclosed by the utility model has the advantages that the drilling capacity of the tire body type PDC drill bit in a plastic formation can be increased, the mechanical drilling speed is increased, the cooling effect of PDCs is enhanced, the burning loss frequency of the PDCs is reduced, the maintenance cost is reduced, and the drilling period is shortened.
Description
Technical field
The utility model relates to a kind of oilfield drilling operation field downhole tool drill bit, particularly a kind of matrix-type PDC drill bit.
Background technology
In current address exploration, exploitation, in oil drilling, although adopt in a large number PDC(composite polycrystal-diamond) drill bit, but in heavy duty service, often can run into the mudstone stratum that plasticity is very strong, because its viscoplasticity is very strong, drilling cuttings very easily stick on drill bit cause " mud drum " and cause blocked portion, functional poor, PDC composite sheet easily produces cracked and over worn phenomenon, cause drill bit easily to damage in operation process, for example Tarim, Xinjiang Tahe main body block Carboniferous System mudstone stratum, buried depth is all more than 5000m, well section segment length 500m left and right, under three axle confined pressures, mud stone has higher plasticity and intensity, existing PDC drill bit is difficult to wedging stratum, and PDC composite sheet cooling effect is poor, easy hot scaling loss PDC composite sheet, cause this well section machine speed on the low side, drill bit usage quantity is many, frequent trips, restricting whole drilling period, increase drilling cost.
Utility model content
The purpose of this utility model is to overcome the shortcoming of prior art, provide a kind of PDC of raising drill bit in plastic formation wedging ability, improve rate of penetration, and strengthen PDC composite sheet cooling effect, reduce the frequency of the hot scaling loss of PDC composite sheet, reduce maintenance cost, shortened the matrix-type PDC drill bit of drilling period.
The purpose of this utility model is achieved through the following technical solutions: a kind of matrix-type PDC drill bit, it comprises bit adapter and drill bit, drill bit is arranged at the top of bit adapter, on the external surface of described drill bit, be provided with the operator wing and secondary wing, the operator wing and secondary wing interval arrange, the upside of the operator wing and secondary wing is evenly provided with rectangle PDC composite sheet, the downside of the operator wing and secondary wing is evenly provided with cylindrical PDC composite sheet, also offers and be equipped with exchangeable nozzle and fixed nozzle on the end face of drill bit.
The described operator wing and the side of secondary wing are provided with gauge teeth.
Described exchangeable nozzle and fixed nozzle are between the operator wing and secondary wing.
The outline line of the described operator wing is parabola.
The utlity model has following advantage:
1, rectangle PDC composite sheet, and improve PDC composite sheet height of protrusion, improve than the pressure of the drill, reduce PDC composite sheet contact layer spreads, eliminate the impact on drilling speed slope as far as possible, improve PDC drill bit in plastic formation wedging ability, improve rate of penetration.
2, on the side of the operator wing and secondary wing, be provided with gauge teeth, improve radially impact resistance of drill bit, protection drill bit, has reduced maintenance cost.
3, drill bit top is also provided with dissimilar nozzle, and the cooling and cutting carring for PDC composite sheet strengthens PDC composite sheet cooling effect, reduces the frequency of the hot scaling loss of PDC composite sheet, cost-saving, shortens drilling period.。
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
In figure: 1-bit adapter, 2-drill bit, the 3-wing of operating, the secondary wing of 4-, 5-rectangle PDC composite sheet, the cylindrical PDC composite sheet of 6-, 7-gauge teeth, 8-exchangeable nozzle, 9-fixed nozzle.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described, but protection domain of the present utility model is not limited to the following stated.
As shown in Figure 1, a kind of matrix-type PDC drill bit, it comprises bit adapter 1 and drill bit 2, drill bit 2 is arranged at the top of bit adapter 1, on the external surface of described drill bit 2, be provided with the operator wing 3 and secondary wing 4, the operator wing 3 arranges with secondary wing 4 intervals, the upside of the operator wing 3 and secondary wing 4 is evenly provided with rectangle PDC composite sheet 5, the downside of the operator wing 3 and secondary wing 4 is evenly provided with cylindrical PDC composite sheet 6, also offers and be equipped with exchangeable nozzle 8 and fixed nozzle 9 on the end face of drill bit 2.
Further, the described operator wing 3 and the side of secondary wing 4 are provided with gauge teeth 7, and the gauge length of gauge teeth 7 is 38.1mm.
Further, described exchangeable nozzle 8 and fixed nozzle 9 be between the operator wing 3 and secondary wing 4, and exchangeable nozzle 8 has three, and fixed nozzle 9 has four.
Further, the outline line of the described operator wing 3 is parabola, and the cutter set density on the operator wing 3 and secondary wing 4 is intermediate density, adopts minor spiral wing.
The course of work of the present utility model is as follows: the mode that adopts creep into/motor of rotating disk to creep into, bit adapter 1 is fixedly connected on to power end, and controlled drilling rate is 0～260rpm, and the pressure of the drill is 25～100KN, and discharge capacity is set to 25～35L/S.
Claims (2)
1. a matrix-type PDC drill bit, it comprises bit adapter (1) and drill bit (2), drill bit (2) is arranged at the top of bit adapter (1), it is characterized in that: on the external surface of described drill bit (2), be provided with the operator wing (3) and secondary wing (4), the operator wing (3) arranges with secondary wing (4) interval, the upside of the operator wing (3) and secondary wing (4) is evenly provided with rectangle PDC composite sheet (5), the downside of the operator wing (3) and secondary wing (4) is evenly provided with cylindrical PDC composite sheet (6), on the end face of drill bit (2), also offer and be equipped with exchangeable nozzle (8) and fixed nozzle (9), the described operator wing (3) and the side of secondary wing (4) are provided with gauge teeth (7), and the gauge length of gauge teeth (7) is 38.1mm, the outline line of the described operator wing (3) is parabola, and the operator wing (3) and secondary wing (4) are spiral wing.
2. a kind of matrix-type PDC drill bit according to claim 1, it is characterized in that: described exchangeable nozzle (8) and fixed nozzle (9) are positioned between the operator wing (3) and secondary wing (4), and exchangeable nozzle (8) has three, fixed nozzle (9) has four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014472.8U CN203905822U (en) | 2014-01-10 | 2014-01-10 | Tire body type PDC (Polycrystalline Diamond Compact) drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014472.8U CN203905822U (en) | 2014-01-10 | 2014-01-10 | Tire body type PDC (Polycrystalline Diamond Compact) drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203905822U true CN203905822U (en) | 2014-10-29 |
Family
ID=51780111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420014472.8U Expired - Fee Related CN203905822U (en) | 2014-01-10 | 2014-01-10 | Tire body type PDC (Polycrystalline Diamond Compact) drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203905822U (en) |
-
2014
- 2014-01-10 CN CN201420014472.8U patent/CN203905822U/en not_active Expired - Fee Related
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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: 20141029 Termination date: 20170110 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |