CN201159050Y - Knife blade type PDC drilling bit for petroleum and natural gas drilling - Google Patents
Knife blade type PDC drilling bit for petroleum and natural gas drilling Download PDFInfo
- Publication number
- CN201159050Y CN201159050Y CNU2007203107631U CN200720310763U CN201159050Y CN 201159050 Y CN201159050 Y CN 201159050Y CN U2007203107631 U CNU2007203107631 U CN U2007203107631U CN 200720310763 U CN200720310763 U CN 200720310763U CN 201159050 Y CN201159050 Y CN 201159050Y
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- CN
- China
- Prior art keywords
- drill bit
- drilling
- bit
- pdc
- wing
- 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 cutter wing type PDC drill bit used for drilling oil and natural gas, which comprises a drill bit basal body, wherein a nozzle is arranged in the drill bit basal body, a cutter wing is fixed on the drill bit basal body, PDC cutting teeth are arranged on a cutter wing, and a chip room, the profile of the crown of the drill bit is a curved deep inner cone structure with big diameter, the cutting teeth on the cutter wing is a dual-cutting structure which arranges teeth both on the front and the rear portions, since the large curved crown drill bit is adopted, the ability of drilling into the ground layer of the drill bit is increased, simultaneously, a large portion of to-be drilled rock can be released form the confined pressure of the ground layer, thereby the aim of improving the mechanical drilling speed is improved, the dual-cutting structure guarantees the stability during drilling, and the service life of the products is greatly improved.
Description
Technical field
The utility model relates to a kind of drill bit, specifically, relates to a kind of PDC drill bit that is used for oil, gas drilling probing usefulness.
Background technology
Because the PDC drill bit has the advantage that rate of penetration is fast, the life-span long, drilling depth is many finally at soft-medium hard formation, so extensive use in oil and gas well drilling.Using to such an extent that the PDC drill bit mainly contains two kinds of cloth tooth modes at present.A kind of is free style cloth tooth, and the PDC cutting teeth is arranged on the drill bit surface uniformly.Drill bit is more steady when creeping into, but chip area is little, grinds bits and discharges smoothness inadequately, and mud drum takes place drill bit easily.Another kind is that all PDC cutting teeths of wing formula cloth tooth are arranged on the wing, and the rate of penetration of drill bit and drill bit section shape and cloth tooth cutting way have confidential relation.Reasonably section shape can improve the rate of penetration of PDC drill bit greatly.
The utility model content
The purpose of this utility model is deficiencies such as the drilling speed that exists at existing drill bit is slow, and application life is short, and a kind of novel blade PDC bit that adopts is provided.
The technical solution of the utility model is: a kind of oil-gas drilling blade PDC bit, comprise the nozzle that is provided with in the bit matrix, bit matrix, be fixed on wing on the bit matrix, be arranged on PDC cutting teeth and chip area on the wing, the bizet section of described drill bit be the major diameter curve dark in wimble structure.
Preferably, the cutting teeth on the described wing is dual cutting structure.
Preferably, described dual cutting structure is front and back cloth teeth.
The beneficial effects of the utility model are: owing to adopt the crown drill bit of big curve, increased the ability on the wedging stratum of drill bit, can the rock that major part will be crept into have been discharged from the confined pressure on stratum simultaneously, reached the purpose that improves rate of penetration.And the stability of dual cutting structure when having guaranteed probing, make increase greatly the application life of product.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a bizet cross-sectional view of the present utility model.
The specific embodiment
Specific embodiment of the utility model as shown in Figures 1 and 2: a kind of oil-gas drilling blade PDC bit, comprise the nozzle 2 that is provided with in the bit matrix 1, bit matrix 1, be fixed on wing 3 on the bit matrix 1, be arranged on PDC cutting teeth 4 and chip area on the wing 3, the bizet section 5 of described drill bit be the dark interior wimble structure of major diameter curve.Cutting teeth 4 on the described wing 3 is dual cutting structure, and described dual cutting structure is front and back cloth teeth.
Claims (3)
1, a kind of oil-gas drilling blade PDC bit, comprise the nozzle that is provided with in the bit matrix, bit matrix, be fixed on wing on the bit matrix, be arranged on PDC cutting teeth and chip area on the wing, it is characterized in that: the bizet section of described drill bit be the major diameter curve dark in wimble structure.
2, oil-gas drilling blade PDC bit as claimed in claim 1 is characterized in that: the cutting teeth on the described wing is dual cutting structure.
3, oil-gas drilling blade PDC bit as claimed in claim 2 is characterized in that: described dual cutting structure is front and back cloth teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203107631U CN201159050Y (en) | 2007-12-14 | 2007-12-14 | Knife blade type PDC drilling bit for petroleum and natural gas drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203107631U CN201159050Y (en) | 2007-12-14 | 2007-12-14 | Knife blade type PDC drilling bit for petroleum and natural gas drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201159050Y true CN201159050Y (en) | 2008-12-03 |
Family
ID=40109636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203107631U Expired - Fee Related CN201159050Y (en) | 2007-12-14 | 2007-12-14 | Knife blade type PDC drilling bit for petroleum and natural gas drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201159050Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464599A (en) * | 2015-07-24 | 2016-04-06 | 四川深远石油钻井工具股份有限公司 | PDC drill bit with directional easy controllability enhancing performance |
-
2007
- 2007-12-14 CN CNU2007203107631U patent/CN201159050Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464599A (en) * | 2015-07-24 | 2016-04-06 | 四川深远石油钻井工具股份有限公司 | PDC drill bit with directional easy controllability enhancing performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081203 Termination date: 20100114 |