CN203716856U - Impregnated PDC (Polycrystalline Diamond Compact) cross-border drill bit - Google Patents

Impregnated PDC (Polycrystalline Diamond Compact) cross-border drill bit Download PDF

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Publication number
CN203716856U
CN203716856U CN201420044698.2U CN201420044698U CN203716856U CN 203716856 U CN203716856 U CN 203716856U CN 201420044698 U CN201420044698 U CN 201420044698U CN 203716856 U CN203716856 U CN 203716856U
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CN
China
Prior art keywords
impregnated
drill bit
pdc
bit
composite sheet
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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
Application number
CN201420044698.2U
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Chinese (zh)
Inventor
高世勇
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Chengdu Kang Puwei Energy Technology Co Ltd
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Chengdu Kang Puwei Energy Technology Co Ltd
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Priority to CN201420044698.2U priority Critical patent/CN203716856U/en
Application granted granted Critical
Publication of CN203716856U publication Critical patent/CN203716856U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an impregnated PDC (Polycrystalline Diamond Compact) cross-border drill bit and belongs to the technical field of drill bits. The impregnated PDC cross-border drill bit disclosed by the utility model comprises a connector and a drill bit body connected onto the connector, wherein the drill bit body is soldered with impregnated diamond teeth and PDC compound sheets; the impregnated diamond teeth are soldered at a crown part and an outer tapered part of a crown outline on the drill bit body; the PDC compound sheets are soldered on the whole crown outline on the drill bit body. According to the impregnated PDC cross-border drill bit, two drill bit technologies including a PDC drill bit and an impregnated drill bit are combined; the high mechanical drilling speed of the PDC drill bit and the long service life of the impregnated drill bit are combined; the service life is longer than that of the PDC drill bit and the drilling speed is faster than that of the impregnated drill bit; the impregnated PDC cross-border drill bit has the characteristics of high mechanical drilling speed and low footage in a hard grinding stratum of the PDC drill bit, but also has the characteristics of low mechanical drilling speed, high footage and long service life of the impregnated drill bit; the service life is longer than that of the PDC drill bit and the drilling speed is faster than that of the impregnated drill bit.

Description

Impregnated PDC is drill bit transboundary
Technical field
The utility model relates to the probing drill bits such as petroleum gas, mine engineering, building foundation engineering construction, geology, the hydrology, particularly a kind of mixing with impregnated tooth and PDC composite sheet drill bit transboundary.
Background technology
Drill bit be in drilling engineering in order to fractured rock, form the rock crushing tool of pit shaft.The drill bit using in drilling engineering now mainly contains rock bit, PDC drill bit, impregnated bit.At present, rock bit the most extensively but because gear wheel is non-fixed structure drill bit, has bearing arrangement, life-span shorter in adapting to stratum, is difficult to obtain higher rate of penetration and drilling depth.
PDC drill bit has in adapting to stratum that rate of penetration is fast, drilling depth is high, the less feature of the pressure of the drill, in drilling engineering, be widely applied, but because diamond layer only has 2mm left and right in the PDC composite sheet of PDC drill bit, diamond content is lower, therefore for hard abrasive formation, the easy embrittlement of PDC composite sheet the wear out failure of PDC drill bit, make its life-span little, and drilling depth is low.PDC drill bit, when hard abrasive formation creeps into, tends to pull out of hole because drill bit lost efficacy.So PDC drill bit has certain limitation in hard abrasive formation.Impregnated diamond bit is a kind ofly to rely on diamond particles in impregnated with diamond tooth as grinding original paper, obtains drilling depth; But its operating principle is grinding rock, have the advantages that rate of penetration is low, the life-span long, drilling depth is many.
Utility model content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, a kind of impregnated PDC drill bit is transboundary provided, the grinding structure of the impregnated tooth of the PDC composite sheet cutting structure of PDC drill bit and diamond-impregnated bit is combined, wherein impregnated tooth can serve as the buffering joint of PDC composite sheet, can reduce the impact of rock to front-seat PDC composite sheet, thereby reach the effect that extends bit life, diamond particles in impregnated tooth can also participate in the grinding to rock, can improve the efficiency of breaking rock of drill bit; Make this impregnated PDC transboundary drill bit both there is the feature that PDC drill bit rate of penetration in hard abrasive formation is high, drilling depth is low, there is again the feature that impregnated bit rate of penetration is low, drilling depth is high, the life-span is long, make it longer than PDC bit life, higher than impregnated bit drilling speed.
The technical solution adopted in the utility model is as follows:
Impregnated PDC of the present utility model is drill bit transboundary, comprise joint and be connected in the bit body on joint, on described bit body, soldering has impregnated with diamond tooth and PDC composite sheet, the hat top that wherein said impregnated with diamond tooth is brazed in bit body upper crown profile divide with outer wimble fraction on, described PDC composite sheet is brazed on the whole crown profile on bit body.
Due to soldering impregnated with diamond tooth on bit body and PDC composite sheet, make creeping into early stage, drill bit be take PDC composite sheet shearing-crushing rock as main, can obtain higher rate of penetration, after PDC composite sheet may wear to a certain degree, impregnated with diamond tooth participates in grinding rock, PDC composite sheet can also continue shearing-crushing rock simultaneously, has improved the compound efficiency of breaking rock of drill bit, and impregnated with diamond tooth can also be protected PDC composite sheet, reduce the impact force of rock to it, extend the application life of composite sheet; Thereby reach, increase footage per bit and the effect in life-span.Impregnated PDC of the present utility model is drill bit transboundary, impregnated PDC is drill bit transboundary, the grinding structure of the impregnated tooth of the PDC composite sheet cutting structure of PDC drill bit and diamond-impregnated bit is combined, wherein impregnated tooth can serve as the buffering joint of PDC composite sheet, can reduce the impact of rock to front-seat PDC composite sheet, thereby reach the effect that extends bit life, the diamond particles in impregnated tooth can also participate in the grinding to rock, can improve the efficiency of breaking rock of drill bit; Make this impregnated PDC transboundary drill bit both there is the feature that PDC drill bit rate of penetration in hard abrasive formation is high, drilling depth is low, there is again the feature that impregnated bit rate of penetration is low, drilling depth is high, the life-span is long, make it longer than PDC bit life, higher than impregnated bit drilling speed.
Impregnated PDC of the present utility model is drill bit transboundary, and described impregnated with diamond tooth is arranged in the rear side of PDC composite sheet on bit body drilling direction, and the apex height of described impregnated with diamond tooth is lower than the 1-3mm of PDC composite sheet apex height.
Owing to having adopted said structure, drill bit only can rotary drilling a direction, therefore in order to make drill bit in drilling process center line wearing and tearing PDC composite sheet, impregnated with diamond tooth need to be arranged in to the rear side of PDC composite sheet, and the proud exposure of PDC composite sheet (summit) is than the high 1-3mm of the proud exposure of impregnated tooth (summit), therefore after PDC composite sheet may wear to a certain degree, impregnated tooth just plays the effect of grinding rock, thereby improves the application life of this drill bit.
Impregnated PDC of the present utility model is drill bit transboundary, and described PDC composite sheet is cylindrical, elliptical cylinder-shape or wedge cylindricality, and described impregnated with diamond tooth is cylindrical, elliptical cylinder-shape and circular arc cylindricality.
Owing to having adopted said structure, can process needs according to actual production, select the shape and structure of PDC composite sheet and impregnated with diamond tooth, make its scope of application wider, be applicable to applying.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are:
1, impregnated PDC of the present utility model drill bit transboundary, impregnated PDC is drill bit transboundary, the grinding structure of the impregnated tooth of the PDC composite sheet cutting structure of PDC drill bit and diamond-impregnated bit is combined, wherein impregnated tooth can serve as the buffering joint of PDC composite sheet, can reduce the impact of rock to front-seat PDC composite sheet, thereby reach the effect that extends bit life, the diamond particles in impregnated tooth can also participate in the grinding to rock, can improve the efficiency of breaking rock of drill bit;
2, impregnated PDC of the present utility model drill bit transboundary, both there is the feature that PDC drill bit rate of penetration in hard abrasive formation is high, drilling depth is low, there is again the feature that impregnated bit rate of penetration is low, drilling depth is high, the life-span is long, make it longer than PDC bit life, higher than impregnated bit drilling speed.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the front view in Fig. 1;
Fig. 3 is the top view in Fig. 2.
Mark in figure: 1-bit body, 2-PDC composite sheet, 3-impregnated with diamond tooth, 4-joint.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As described in Fig. 1 to Fig. 3, impregnated PDC of the present utility model is drill bit transboundary, comprise joint 4 and be connected in the bit body 1 on joint 4, on described bit body 1, soldering has impregnated with diamond tooth 3 and PDC composite sheet 2, the hat top that wherein said impregnated with diamond tooth 3 is brazed in bit body 1 upper crown profile divide with outer wimble fraction on, described impregnated with diamond tooth 3 is cylindrical, elliptical cylinder-shape and circular arc cylindricality; Described PDC composite sheet 2 is brazed on the whole crown profile on bit body 1, and described PDC composite sheet 2 is cylindrical, elliptical cylinder-shape or wedge cylindricality; Described impregnated with diamond tooth 3 is arranged in the rear side of PDC composite sheet 2 on bit body 1 drilling direction, and the apex height of described impregnated with diamond tooth 3 can be selected 1mm, 2mm or 3mm according to actual needs lower than the 1-3mm(of PDC composite sheet 2 apex height, can in 1-3mm, select arbitrarily).
Impregnated PDC of the present utility model is drill bit transboundary, and the proud exposure of PDC composite sheet (summit) is than the high 1 ~ 3mm of the proud exposure of impregnated tooth (summit), and therefore, after PDC composite sheet may wear to a certain degree, impregnated tooth just plays the effect of grinding rock.Therefore creeping into early stage, drill bit is to take PDC composite sheet shearing-crushing rock as main, can obtain higher rate of penetration, after PDC composite sheet may wear to a certain degree, impregnated tooth participates in grinding rock, and PDC composite sheet can also continue shearing-crushing rock simultaneously, has improved the compound efficiency of breaking rock of drill bit.Impregnated tooth can also be protected PDC composite sheet, reduces the impact force of rock to it, extends the application life of composite sheet.Thereby reach, increase footage per bit and the effect in life-span.
Impregnated PDC of the present utility model is drill bit transboundary, and PDC composite sheet 2 and impregnated with diamond tooth 3 are all participated in the fragmentation to rock, but PDC composite sheet 2 is to take shearing-crushing rock as main, can make drill bit obtain higher rate of penetration.Impregnated with diamond tooth 3 is to take grinding fractured rock as main, has the higher life-span.Combined type PDC drill bit in conjunction with the form of two kinds of fractured rocks, just has higher rate of penetration and has again higher application life.Therefore the utility model combines the grinding structure of the impregnated tooth of the PDC composite sheet cutting structure of PDC drill bit and diamond-impregnated bit, wherein impregnated tooth can serve as the buffering joint of PDC composite sheet, can reduce the impact of rock to front-seat PDC composite sheet, thereby reach the effect that extends bit life, diamond particles in impregnated tooth can also participate in the grinding to rock, can improve the efficiency of breaking rock of drill bit; Make this impregnated PDC transboundary drill bit both there is the feature that PDC drill bit rate of penetration in hard abrasive formation is high, drilling depth is low, there is again the feature that impregnated bit rate of penetration is low, drilling depth is high, the life-span is long, make it longer than PDC bit life, higher than impregnated bit drilling speed.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Claims (3)

1. impregnated PDC drill bit transboundary, comprise joint (4) and be connected in the bit body (1) on joint (4), it is characterized in that: the upper soldering of described bit body (1) has impregnated with diamond tooth (3) and PDC composite sheet (2), the hat top that wherein said impregnated with diamond tooth (3) is brazed in bit body (1) upper crown profile divide with outer wimble fraction on, described PDC composite sheet (2) is brazed on the whole crown profile on bit body (1).
2. impregnated PDC as claimed in claim 1 drill bit transboundary, it is characterized in that: described impregnated with diamond tooth (3) is arranged in the rear side of PDC composite sheet (2) on bit body (1) drilling direction, and the apex height of described impregnated with diamond tooth (3) is lower than the 1-3mm of PDC composite sheet (2) apex height.
3. impregnated PDC as claimed in claim 2 drill bit transboundary, is characterized in that: described PDC composite sheet (2) is cylindrical, elliptical cylinder-shape or wedge cylindricality, and described impregnated with diamond tooth (3) is cylindrical, elliptical cylinder-shape and circular arc cylindricality.
CN201420044698.2U 2014-01-24 2014-01-24 Impregnated PDC (Polycrystalline Diamond Compact) cross-border drill bit Expired - Fee Related CN203716856U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420044698.2U CN203716856U (en) 2014-01-24 2014-01-24 Impregnated PDC (Polycrystalline Diamond Compact) cross-border drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420044698.2U CN203716856U (en) 2014-01-24 2014-01-24 Impregnated PDC (Polycrystalline Diamond Compact) cross-border drill bit

Publications (1)

Publication Number Publication Date
CN203716856U true CN203716856U (en) 2014-07-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106545299A (en) * 2015-09-18 2017-03-29 成都百施特金刚石钻头有限公司 A kind of new combination tooth PDC drill bit
CN108019153A (en) * 2017-12-05 2018-05-11 中国石油化工股份有限公司 A kind of PDC drill bit of suitable middle-shallow layer directional well drilling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106545299A (en) * 2015-09-18 2017-03-29 成都百施特金刚石钻头有限公司 A kind of new combination tooth PDC drill bit
CN108019153A (en) * 2017-12-05 2018-05-11 中国石油化工股份有限公司 A kind of PDC drill bit of suitable middle-shallow layer directional well drilling

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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: 20140716

Termination date: 20170124