CN203669758U - PDC drill bit capable of drilling into medium hard plasticity stratum quickly - Google Patents
PDC drill bit capable of drilling into medium hard plasticity stratum quickly Download PDFInfo
- Publication number
- CN203669758U CN203669758U CN201420014570.1U CN201420014570U CN203669758U CN 203669758 U CN203669758 U CN 203669758U CN 201420014570 U CN201420014570 U CN 201420014570U CN 203669758 U CN203669758 U CN 203669758U
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- drill bit
- wing
- pdc
- drilling
- crown part
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Abstract
The utility model relates to a PDC drill bit capable of drilling into a medium hard plasticity stratum quickly. The PDS drill bit comprises a drill bit adapter (1) and a drill bit crown part (2). The drill bit crown part (2) is arranged at one end of the drill bit adapter (1). A primary cutter wing (3) and a secondary cutter wing (4) are arranged on the outer surface of the drill bit crown part (2), the primary cutter wing (3) starts from the center of the top face of the drill bit crown part (2) and ends in the side face of the drill bit crown part (2), and the secondary cutter wing (4) starts from the edge of the top face of the drill bit crown part (2) and ends in the position below the side face of the drill bit crown part (2). A plurality of PDC composite sheets (5) are evenly arranged on the same side of the primary cutter wing (3) and the secondary cutter wing (4) respectively. A plurality of nozzles (6) are formed in the top face of the drill bit crown part (2). The PDC drill bit capable of drilling into the medium hard plasticity stratum quickly has the advantages of increasing the mechanical drilling speed, enhancing the cooling effect of the PDC composite sheets, lowering the heat burning loss frequency of the PDC composite sheets, lowering maintenance cost and shortening drilling period.
Description
Technical field
The utility model relates to hard plastic formation fast drilling PDC drill bit in a kind of oilfield drilling operation field downhole tool drill bit, particularly one.
Background technology
PDC drill bit comprises bit adapter, drill bit, the operator wing and secondary wing, on the operator wing and secondary wing, be installed on drill bit, bit adapter is connected with drill bit, PDC is the special drill for oil well that substitutes old-fashioned rotary drill of current oil gas field, it has the features such as high-wearing feature, high impact-resistant, anti-oblique, anti-mud drum, high drilling speed, and PDC drill bit is described as " three height " product of high-tech, high investment, high production.When PDC drill bit in use, because PDC has high rotating speed, low the pressure of the drill, the contour performance advantage of high drilling depth, the application of PDC drill bit in oilfield drilling process, can reduce the cost of winning in oil field greatly, accelerate exploitation rate, improve the economic benefit of oilfield exploitation.
In current address exploration, exploitation, in oil drilling, although adopt in a large number PDC 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, 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.
Utility model content
The purpose of this utility model is to overcome the shortcoming of prior art, provide a kind of and improve rate of penetration, and improve PDC composite sheet cooling effect, reduce the frequency of the hot scaling loss of PDC composite sheet, reduce maintenance cost, hard plastic formation fast drilling PDC drill bit in shortening drilling period.
The purpose of this utility model is achieved through the following technical solutions: hard plastic formation fast drilling PDC drill bit in one, it comprises bit adapter and drill bit, drill bit is arranged at one end of bit adapter, on the external surface of described drill bit, be provided with the operator wing and secondary wing, the described operator wing starts from the center of drill bit end face, and terminate in the below, side of drill bit, described secondary wing starts from the edge of drill bit end face, and terminate in the below, side of drill bit, the homonymy of the operator wing and secondary wing is evenly laid with respectively multiple PDC composite sheet, on the end face of described drill bit, be provided with multiple nozzles.
The described operator wing and secondary wing respectively have two, and the operator wing and secondary wing interval layout in the shape of a spiral.
Described nozzle is interchangeable nozzles.
The utlity model has following advantage:
1, the operator wing and secondary wing arranges at interval in the shape of a spiral, improve PDC drill bit in hard plastic formation wedging ability, improve rate of penetration.
2, at the end face of drill bit, multiple exchangeable nozzles are set, the cooling and cutting carring for PDC composite sheet, the cooling effect of enhancing PDC composite sheet, the frequency of the hot scaling loss of reduction PDC composite sheet, cost-saving, shorten drilling period, improve drilling efficiency.
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-PDC composite sheet, 6-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, hard plastic formation fast drilling PDC drill bit in one, it comprises bit adapter 1 and drill bit 2, drill bit 2 is arranged at one end 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 described operator wing 3 starts from the center of drill bit 2 end faces, and terminate in the below, side of drill bit 2, described secondary wing 4 starts from the edge of drill bit 2 end faces, and terminate in the below, side of drill bit 2, the homonymy of the operator wing 3 and secondary wing 4 is evenly laid with respectively multiple PDC composite sheet 5, on the end face of described drill bit 2, be provided with multiple nozzles 6.
Further, the described operator wing 3 and secondary wing 4 respectively have two, and the operator wing 3 and secondary wing 4 arrange at interval in the shape of a spiral, improve PDC drill bit in hard plastic formation wedging ability, improve rate of penetration.
Further, described nozzle 6 is interchangeable nozzles, for the cooling and cutting carring of PDC composite sheet 5, strengthens the cooling effect of PDC composite sheet 5, reduces the frequency of PDC composite sheet 5 hot scaling loss, cost-saving, shortens drilling period, has improved drilling efficiency.
Claims (3)
1. hard plastic formation fast drilling PDC drill bit in a kind, it comprises bit adapter (1) and drill bit (2), drill bit (2) is arranged at one end 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 described operator wing (3) starts from the center of drill bit (2) end face, and terminate in the below, side of drill bit (2), described secondary wing (4) starts from the edge of drill bit (2) end face, and terminate in the below, side of drill bit (2), the homonymy of the operator wing (3) and secondary wing (4) is evenly laid with respectively multiple PDC composite sheet (5), on the end face of described drill bit (2), be provided with multiple nozzles (6).
2. hard plastic formation fast drilling PDC drill bit in one according to claim 1, is characterized in that: described the operator wing (3) and secondary wing (4) respectively have two, and the operator wing (3) and secondary wing (4) interval layout in the shape of a spiral.
3. hard plastic formation fast drilling PDC drill bit in one according to claim 1, is characterized in that: described nozzle (6) is interchangeable nozzles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014570.1U CN203669758U (en) | 2014-01-10 | 2014-01-10 | PDC drill bit capable of drilling into medium hard plasticity stratum quickly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014570.1U CN203669758U (en) | 2014-01-10 | 2014-01-10 | PDC drill bit capable of drilling into medium hard plasticity stratum quickly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203669758U true CN203669758U (en) | 2014-06-25 |
Family
ID=50966070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420014570.1U Expired - Fee Related CN203669758U (en) | 2014-01-10 | 2014-01-10 | PDC drill bit capable of drilling into medium hard plasticity stratum quickly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203669758U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894766A (en) * | 2017-03-21 | 2017-06-27 | 中冶成都勘察研究总院有限公司 | For crack, the anti-float anchor rod constructing device of rich groundwater shale layer |
| CN108533183A (en) * | 2018-06-22 | 2018-09-14 | 西南石油大学 | The PDC drill bit of passive swivel nozzle is provided on a kind of wing |
-
2014
- 2014-01-10 CN CN201420014570.1U patent/CN203669758U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894766A (en) * | 2017-03-21 | 2017-06-27 | 中冶成都勘察研究总院有限公司 | For crack, the anti-float anchor rod constructing device of rich groundwater shale layer |
| CN108533183A (en) * | 2018-06-22 | 2018-09-14 | 西南石油大学 | The PDC drill bit of passive swivel nozzle is provided on a kind of wing |
| CN108533183B (en) * | 2018-06-22 | 2023-08-15 | 西南石油大学 | PDC drill bit with passive rotary nozzle arranged on blade |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20170110 |