CN202017456U - High-speed impregnated drill bit - Google Patents

High-speed impregnated drill bit Download PDF

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Publication number
CN202017456U
CN202017456U CN2011201403393U CN201120140339U CN202017456U CN 202017456 U CN202017456 U CN 202017456U CN 2011201403393 U CN2011201403393 U CN 2011201403393U CN 201120140339 U CN201120140339 U CN 201120140339U CN 202017456 U CN202017456 U CN 202017456U
Authority
CN
China
Prior art keywords
impregnated
drill bit
speed
tooth
teeth
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 - Lifetime
Application number
CN2011201403393U
Other languages
Chinese (zh)
Inventor
彭静涛
陈孝勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SICHUAN CHUANSHI DIAMOND BIT CO Ltd
Original Assignee
SICHUAN CHUANSHI DIAMOND BIT CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SICHUAN CHUANSHI DIAMOND BIT CO Ltd filed Critical SICHUAN CHUANSHI DIAMOND BIT CO Ltd
Priority to CN2011201403393U priority Critical patent/CN202017456U/en
Application granted granted Critical
Publication of CN202017456U publication Critical patent/CN202017456U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model belongs to rotary drilling bits for petroleum and geology, and particularly relates to a high-speed impregnated drill bit, which comprises a drill bit body and a joint, wherein the drill bit body is mounted on the joint, and a plurality of blades of the drill bit body form a crown part of the drill bit. The key technology is adopted that long impregnated teeth and short impregnated teeth are alternatively mounted on every blade, so as to form the drill bit with a split impregnated cutting structure. When the high-speed impregnated drill bit encounters a medium hard stratum layer, strong stratum layer penetrating capability endows the drill bit with higher mechanical drilling speed, therefore the shaft drilling efficiency is greatly improved, the shaft building period is further shortened, and the economic efficiency is highly remarkable. As slurry can flow in the split impregnated structure, the cooling effect of the slurry on the impregnated structure is enhanced, and the impregnated teeth can be prevented from being burnt and damaged by high temperature, as a result the impregnated teeth are protected and the service life of the drill bit is prolonged.

Description

A kind of high speed impregnated bit
Technical field
The utility model belongs to the rotary drilling drill bit that a kind of oil, geology are used, particularly a kind of high speed impregnated bit.
Background technology
At present, use impregnated structure very extensive in fields such as oil, geology as the rotary drilling drill bit use of cutting teeth.Impregnated bit has can adapt to drillability extreme difference stratum, has the advantage than the high life on the stratum of drillability extreme difference.The impregnated teeth drill bit of conventional design is generally taked the design of whole wing formula, i.e. as a whole impregnated cutting structure of wing, and the advantage of this structure is the layout density height of impregnated cutting structure, makes the life-span of drill bit longer.But whole impregnated step cutting structure bit is when bore meeting medium ground, and the ability on wedging stratum is relatively poor, can not effectively improve rate of penetration, and comparing rate of penetration with rock bit etc. does not have advantage, and economic benefit is not high.Whole impregnated structure is unfavorable for cleaning and the cooling of mud to impregnated tooth simultaneously, causes impregnated tooth Yin Gaowen scaling loss easily.
Summary of the invention
Problem to be solved in the utility model is exactly the shortcoming that exists at above-mentioned prior art, provides a kind of and is boring when meeting medium ground, and wedging stratum ability is strong, can make drill bit obtain the impregnated rotary drilling drill bit of higher rate of penetration.Its technical scheme is as follows:
It comprises drill body and joint, and drill body is installed on the joint, and drill body is formed drill bit by a plurality of wings.Its key technology is that long impregnated tooth and short impregnated tooth alternately are installed on each wing, constitutes the drill bit of split type impregnated cutting structure.
The beneficial effect that compared with prior art the utlity model has is:
1, adopt split type impregnated cutting structure to replace the impregnated cutting structure of original monolithic, long impregnated tooth and short impregnated tooth arranged alternate can further reduce the cloth tooth density of structure, when boring the chance medium ground, wedging stratum ability is strong, helps improving the rate of penetration of drill bit.The drilling depth life-span of single drill bit of the utility model has reached more than the 300m, and rate of penetration is up to 1.6m/h, and drilling efficiency gets a promotion significantly, and further shorten well construction period, the economic benefit highly significant.
2, split type impregnated structure can allow mud flow between split type impregnated structure, has strengthened the cooling effect of mud to impregnated structure, helps preventing that impregnated tooth from by the high temperature scaling loss, having protected impregnated tooth, has improved drilling life of bit.
3, the drill bit inner cone is installed the PDC tooth, can effectively improve the cutting power in tapering in the drill bit, improves rate of penetration.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model drill bit structural representation.
The specific embodiment
Referring to Fig. 1, Fig. 2, the utility model comprises drill body 3 and joint 4, and drill body is installed on the joint, and drill body is formed drill bit by a plurality of wings 5.Its key technology is that long impregnated tooth 2 and short impregnated tooth 6 alternately are installed on each wing, constitutes the drill bit of split type impregnated cutting structure.At the drill bit inner cone PDC tooth 1 is installed.
Blade contour can be the straight knife wing or arc wing.
Split type impregnated tooth can be with wing to be formed with wide impregnated tooth, also can be made of jointly with wide impregnated tooth and short impregnated tooth wing.
The structure of long impregnated tooth and short impregnated tooth can be cylindrical, square, wedge shape, runway shape or ellipse.Short impregnated tooth can also be the cylindrical and wedge shape of band tapering.
Above-mentioned impregnated tooth can be disposed according to a certain percentage to fire and form by diamond and corresponding metal powder, and coverage is the whole wing of drill bit.
The aforementioned drill bit that constitutes by the impregnated tooth of two kinds of different lengths, two kinds of teeth can adopt different diamond formula rates, and this combination can make the bit cutting ability stronger, and drill bit rate of penetration and life-span can both be improved.

Claims (3)

1. high speed impregnated bit, comprise drill body (3) and joint (4), drill body is installed on the joint, drill body is formed drill bit by a plurality of wings (5), it is characterized in that long impregnated tooth (2) and short impregnated tooth (6) alternately are installed on each wing, constitute the drill bit of split type impregnated cutting structure.
2. according to the described high speed impregnated bit of claim 1, it is characterized in that PDC tooth (1) being installed at the drill bit inner cone.
3. according to the described high speed impregnated bit of claim 1, it is characterized in that the structure of long impregnated tooth (2) and short impregnated tooth (6) is cylindrical, square, wedge shape, runway shape or ellipse.
CN2011201403393U 2011-05-05 2011-05-05 High-speed impregnated drill bit Expired - Lifetime CN202017456U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201403393U CN202017456U (en) 2011-05-05 2011-05-05 High-speed impregnated drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201403393U CN202017456U (en) 2011-05-05 2011-05-05 High-speed impregnated drill bit

Publications (1)

Publication Number Publication Date
CN202017456U true CN202017456U (en) 2011-10-26

Family

ID=44811127

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011201403393U Expired - Lifetime CN202017456U (en) 2011-05-05 2011-05-05 High-speed impregnated drill bit

Country Status (1)

Country Link
CN (1) CN202017456U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104246110A (en) * 2011-12-29 2014-12-24 史密斯国际有限公司 Split sleeves for rolling cutters
CN105952382A (en) * 2016-06-28 2016-09-21 四川川庆石油钻采科技有限公司 Diamond-impregnated bit with double cutting structures
CN105971519A (en) * 2016-06-29 2016-09-28 四川川庆石油钻采科技有限公司 Ridge-type impregnated diamond bit
CN107255017A (en) * 2016-10-18 2017-10-17 西南石油大学 A kind of table inlays the arc-shaped gear single-cone rotary drill bit of natural diamond particles
CN108194026A (en) * 2018-01-13 2018-06-22 东北石油大学 Cutting-abrasive type diamond impregnated block and PDC composite sheets mix diamond setting head
US10472899B2 (en) 2011-12-05 2019-11-12 Smith International, Inc. Cutting tools with rotating elements

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10472899B2 (en) 2011-12-05 2019-11-12 Smith International, Inc. Cutting tools with rotating elements
CN104246110A (en) * 2011-12-29 2014-12-24 史密斯国际有限公司 Split sleeves for rolling cutters
CN105952382A (en) * 2016-06-28 2016-09-21 四川川庆石油钻采科技有限公司 Diamond-impregnated bit with double cutting structures
CN105971519A (en) * 2016-06-29 2016-09-28 四川川庆石油钻采科技有限公司 Ridge-type impregnated diamond bit
CN107255017A (en) * 2016-10-18 2017-10-17 西南石油大学 A kind of table inlays the arc-shaped gear single-cone rotary drill bit of natural diamond particles
CN108194026A (en) * 2018-01-13 2018-06-22 东北石油大学 Cutting-abrasive type diamond impregnated block and PDC composite sheets mix diamond setting head
CN108194026B (en) * 2018-01-13 2019-07-30 东北石油大学 Cutting-abrasive type diamond impregnated block and PDC composite sheet mix diamond setting head

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C14 Grant of patent or utility model
CX01 Expiry of patent term

Granted publication date: 20111026

CX01 Expiry of patent term