CN203891774U - Five-blade PDC (polycrystalline diamond compact) bit applicable to hard and soft interbedded stratum - Google Patents

Five-blade PDC (polycrystalline diamond compact) bit applicable to hard and soft interbedded stratum Download PDF

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Publication number
CN203891774U
CN203891774U CN201420266064.1U CN201420266064U CN203891774U CN 203891774 U CN203891774 U CN 203891774U CN 201420266064 U CN201420266064 U CN 201420266064U CN 203891774 U CN203891774 U CN 203891774U
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China
Prior art keywords
wing
main cutting
bit
blades
cutting tooth
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Application number
CN201420266064.1U
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Chinese (zh)
Inventor
李文金
陈俊勇
田志欣
闫猛
李旭东
刘杰
杨英祥
温贵凡
庞正光
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SHEENSTONE (SHENZHEN) OIL TOOLS CO Ltd
PANYU OPERATION CO Ltd OF CHINA NATIONAL OFFSHORE OIL CORP
Original Assignee
SHEENSTONE (SHENZHEN) OIL TOOLS CO Ltd
PANYU OPERATION CO Ltd OF CHINA NATIONAL OFFSHORE OIL CORP
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Priority to CN201420266064.1U priority Critical patent/CN203891774U/en
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Abstract

The utility model discloses a five-blade PDC (polycrystalline diamond compact) bit applicable to a hard and soft interbedded stratum. The five blade PDC bit comprises a bit body and five blades convexly arranged on the crown portion of the bit body, and a plurality of grooves used for discharging impurities are formed among the blades. The five-blade PDC bit is characterized in that cutting edges of the blades are provided with 45 main cutting teeth arranged along the blades at intervals, the front ends of the main cutting teeth extend into the grooves, and the numbers of the main cutting teeth distributed on the blades are 11, 7, 8, 11 and 8 respectively, and the main cutting teeth arranged at the outermost end of each blade are vertical. On the basis of an existing five-blade PDC bit, distribution angles of the blades and distribution of the main cutting teeth on the blades are adjusted, distribution density of the blades and the grooves is reasonable, drilling speed of the five-blade PDC bit can be increased, service life of the integral bit is prolonged, and using requirements of people are met.

Description

A kind of five wing PDC drill bits that are suitable for the staggered stratum of soft or hard
Technical field
The utility model relates to a kind of high-performance five wing PDC drill bits that are suitable for the staggered stratum of soft or hard of applying in oil and gas well drilling engineering.
Background technology
In oil drilling, generally adopt PDC(composite polycrystal-diamond) drill bit.Five wing PDC drill bits of prior art, arranging that cutting teeth on distribution angle and the wing of wing distributes is unreasonable, functional poor, PDC composite sheet easily produces cracked and over worn phenomenon, cause drill bit easily to damage in operation process, and drilling speed is lower, effect is bad, affects drillng operation.
Utility model content
For above-mentioned technical problem, the purpose of this utility model is to provide the cutting teeth on a kind of distribution angle and wing that can overcome existing drill bit wing to distribute the five wing PDC drill bits that are applicable to the staggered stratum of soft or hard of unreasonable defect is set.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model content is specific as follows:
A kind of five wing PDC drill bits that are suitable for the staggered stratum of soft or hard, comprise drill body and be convexly set in five wings of drill body bizet, between wing, be formed for discharging several grooves of foreign material, the truncated sides of wing is provided with along the spaced main cutting tooth of wing, the front end of main cutting tooth stretches in groove, and the number of main cutting tooth is 45, and its quantity distributing at five wings is followed successively by 11,7,8,11,8, wherein, the main cutting tooth that is positioned at each wing outermost end is the tooth of erectting.
Further, the bizet central distribution of five wing wound drill bit bodies, distribution angle is respectively 0 °, 82 °, 162 °, 228 °, 296 °.
Further, described main cutting tooth is around arranged from the near to the remote from bizet center to bizet, and the back rake angle of main cutting tooth is incremented to 30 ° from 14 °.
Further, the diameter of described main cutting tooth is 16mm.
Compared with prior art, the utility model has produced following beneficial effect:
As mentioned above, the utility model is on the basis of existing five wing PDC drill bits, the main cutting tooth of having adjusted on distribution angle and the wing of wing distributes, thereby the density that makes wing and groove distributes and rationally can improve the bit speed of five wing PDC drill bits and the application life of having improved whole drill bit, has met people's user demand.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model will be further described.
Fig. 1 is the more preferably structural representations of embodiment of five wing PDC drill bits of the present utility model.
Detailed description of the invention
As shown in Figure 1, the utility model discloses a kind of five wing PDC drill bits that are suitable for the staggered stratum of soft or hard, five wings that it comprises drill body 100 and is convexly set in drill body 100 bizets, five wings are respectively wing 101, wing 102, wing 103, wing 104, wing 105; Between wing, be formed for discharging several grooves (not indicating in figure) of foreign material, the truncated sides of wing is (while being bit cutting soil, wing is the side to soil just) be provided with along the spaced multiple main cutting teeth of wing, the front end of main cutting tooth stretches in groove, the number of main cutting tooth is 45, its quantity distributing at five wings is followed successively by 11,7,8,11,8, particularly, these 45 main cutting teeth being assigned as on each wing: be the the the the the the the 1st, 3,5,7,12,17,22,27,32,37,42 main cutting teeth on wing 101; On wing 102, be the the the the 11st, 16,21,26,31,36,41 main cutting teeth; On wing 103, be the the the the the 9th, 14,19,24,29,34,38,45 main cutting teeth; On wing 104, be the the the the the the the 2nd, 4,6,10,15,20,25,30,35,40,44 main cutting teeth; On wing 105, be the the the the the 8th, 13,18,23,28,33,39,43, wherein, the main cutting tooth that is positioned at each wing outermost end is the tooth of erectting, and the the the 41st, 42,43,44,45 main cutting teeth are the tooth of erectting, and it is respectively perpendicular to the external surface of place wing.
Particularly, the bizet central distribution of five wing wound drill bit bodies, distribution angle is respectively 0 °, 82 °, 162 °, 228 °, 296 °, the wing arranging with this kind of angle and groove density distribute proper, the speed that is conducive to subsoil to cut, and discharge fast foreign material, improve the operating efficiency of this drill bit.
Preferably, described main cutting tooth is around arranged from the near to the remote from bizet center to bizet, and the back rake angle of main cutting tooth is incremented to 30 ° from 14 °, is conducive to improve stock-removing efficiency.
Further, the diameter of described main cutting tooth is 16mm.
Compared with prior art, the utility model has produced following beneficial effect:
In sum, the utility model is on the basis of existing five wing PDC drill bits, the main cutting tooth of having adjusted on distribution angle and the wing of wing distributes, thereby the density that makes wing and groove distributes and rationally can improve the bit speed of five wing PDC drill bits and the application life of having improved whole drill bit, has met people's user demand.
For a person skilled in the art, can be according to technical scheme described above and design, make other various corresponding changes and distortion, and these all changes and distortion all should belong to the protection domain of the utility model claim within.

Claims (4)

1. one kind is suitable for the five wing PDC drill bits on the staggered stratum of soft or hard, comprise drill body and be convexly set in five wings of drill body bizet, between wing, be formed for discharging several grooves of foreign material, it is characterized in that: the truncated sides of wing is provided with along the spaced main cutting tooth of wing, the front end of main cutting tooth stretches in groove, the number of main cutting tooth is 45, its quantity distributing at five wings is respectively followed successively by 11,7,8,11,8, wherein, the main cutting tooth that is positioned at each wing outermost end is the tooth of erectting.
2. five wing PDC drill bits as claimed in claim 1, is characterized in that: the bizet central distribution of five wing wound drill bit bodies, distribution angle is respectively 0 °, 82 °, 162 °, 228 °, 296 °.
3. five wing PDC drill bits as claimed in claim 1, is characterized in that: described main cutting tooth is around arranged from the near to the remote from bizet center to bizet, and the back rake angle of main cutting tooth is incremented to 30 ° from 14 °.
4. five wing PDC drill bits as claimed in claim 1, is characterized in that: the diameter of described main cutting tooth is 16mm.
CN201420266064.1U 2014-05-22 2014-05-22 Five-blade PDC (polycrystalline diamond compact) bit applicable to hard and soft interbedded stratum Active CN203891774U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420266064.1U CN203891774U (en) 2014-05-22 2014-05-22 Five-blade PDC (polycrystalline diamond compact) bit applicable to hard and soft interbedded stratum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420266064.1U CN203891774U (en) 2014-05-22 2014-05-22 Five-blade PDC (polycrystalline diamond compact) bit applicable to hard and soft interbedded stratum

Publications (1)

Publication Number Publication Date
CN203891774U true CN203891774U (en) 2014-10-22

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Country Status (1)

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CN (1) CN203891774U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134084A (en) * 2015-08-17 2015-12-09 宝鸡石油机械有限责任公司 PDC drilling bit with mixed pre-crushing tooth arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134084A (en) * 2015-08-17 2015-12-09 宝鸡石油机械有限责任公司 PDC drilling bit with mixed pre-crushing tooth arrangement

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