CN104302862A - Drill bit for percussive drilling - Google Patents
Drill bit for percussive drilling Download PDFInfo
- Publication number
- CN104302862A CN104302862A CN201380015884.1A CN201380015884A CN104302862A CN 104302862 A CN104302862 A CN 104302862A CN 201380015884 A CN201380015884 A CN 201380015884A CN 104302862 A CN104302862 A CN 104302862A
- Authority
- CN
- China
- Prior art keywords
- ball tooth
- work plane
- drill bit
- surperficial
- gauge
- 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.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 15
- 238000005452 bending Methods 0.000 claims description 5
- 239000011435 rock Substances 0.000 description 5
- 230000003116 impacting effect Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 235000013351 cheese Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 231100000241 scar Toxicity 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/36—Percussion drill bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1092—Gauge section of drill bits
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Drilling Tools (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention relates to a drill bit (1) for use in percussive drilling. The drill bit (1) comprises a body (2) having a front face (4), at least one button on the front face (hereinafter 'face button') (10), and a plurality of gauge buttons (20), each of the buttons (10 and 20) having a working face (10a and 20a). At least a portion of at least one gauge button (20) working face (20a) has a curvature which deviates further from being flat by comparison to a curvature of any curved portion of at least one face button (10) working face (10a), so that said portion of at least one gauge button (20) working face (20a) projects further than said portion of at least one face button (10) working face (10a).
Description
Technical field
In order to explain, with reference in the use top hammer of rock being impacted to drill bit in drilling, but drill bit also can use in the impact drilling of other kind, such as, use in DTH.
Background technology
Generally have for the ball tooth of such drill bit or insert the cylindrical body comprising opposing ends, an end in described opposing ends comprises the work plane for ball tooth, and this work plane is shaped to be given prominence to from the body of ball tooth.More particularly, the shape of this work plane is cardinal principle hemispherical (cheese) or parabola shaped (trajectory shape).
Typically, gauge ball tooth (gauge buttons) has the diameter being more than or equal to surperficial ball tooth.This example especially can at document US 3,519, and 092, US 3,997,011 and document US 4,572, find in 307, similarly also shown in Fig. 2 herein.
The problem of the drill bit of type described above is, the degree of the energy (that is, from the energy of scar reflection) of reflection is too large, to such an extent as to this can damage drill bit and other associated device.
At US 5,947, in 215, disclose a kind of drill bit, this drill bit has the large forecourt tooth of the single diameter being positioned at the ratio gauge ball tooth at center, and wherein, forefront and the forecourt tooth of gauge ball tooth are arranged in common plane, or forecourt dental transition is protruded forward.Such object is to provide good drill bit guiding.
For background technology and associated problems, make the present invention.
By reference to the accompanying drawings, objects and advantages of the present invention will become apparent according to description below, wherein, by describing and example, disclose embodiments of the invention.
Summary of the invention
On the one hand, the present invention can be described as and is for impacting the drill bit used in drilling, this drill bit comprises the body with front surface, at least one ball tooth (hereinafter referred to as " surperficial ball tooth ") on the front surface and multiple gauge ball tooth, each in ball tooth has work plane, at least one gauge ball tooth work plane there is following curvature at least partially, the curvature of any sweep of at least one surperficial ball tooth work plane of this ratio of curvature depart from more smooth (namely, more obvious, sharper or sharper), the described part of the described part of at least one gauge ball tooth work plane ball tooth work plane more surperficial than at least one is made to protrude more.
In the context of the present patent application, term " work plane " should mean each ball tooth when drilling and rock interactional that a part.
In one form, the described part of the described part of at least one gauge ball tooth work plane ball tooth work plane more surperficial than at least one is protruded more.
In one form, in surperficial ball tooth and gauge ball tooth each work plane be bending at least partially, when described work plane (10a and 20a) comprises multiple part, each part can be mixed into adjacent part.
In one form, the entirety of the work plane of each in surperficial ball tooth and gauge ball tooth is bending.
In one form, the curvature of the work plane of at least one surperficial ball tooth of ratio of curvature of the work plane of at least one gauge ball tooth is more obvious.
In one form, described or each gauge ball tooth work plane protrudes more than described or each surperficial ball tooth work plane.
In one form, the radius of curvature of the work plane of at least one surperficial ball tooth is larger than the radius of curvature of the work plane of at least one gauge ball tooth.
In one form, each in surperficial ball tooth and gauge ball tooth comprises substantial cylindrical body.
In one form, the work plane of at least one gauge ball tooth is roughly hemispherical (or cheese).
In one form, the shape of the work plane of at least one gauge ball tooth is roughly parabola shaped (or trajectory shape).
In one form, the work plane of at least one surperficial ball tooth is configured as one section of similar hemisphere (or dome).
In one form, the work plane of at least one surperficial ball tooth is configured as one section of similar parabolic shape (or trajectory shape shape).
In one form, the radius of the cylindrical body of at least one surperficial ball tooth is different from the radius of curvature of the sweep of the work plane of at least one surperficial ball tooth described.
In one form, described in the radius ratio of the cylindrical body of at least one surperficial ball tooth, the radius of curvature of the sweep of the work plane of at least one surperficial ball tooth is little.
In one form, the radius of curvature of the sweep of the radius of the cylindrical body of at least one gauge ball tooth and the work plane of at least one gauge ball tooth described is roughly equal or at least similar.
In one form, this drill bit comprises multiple surperficial ball tooth.
In one form, the work plane of at least one surperficial ball tooth is smooth or approximately smooth.
In in further, the present invention can be described as and is for impacting the drill bit used in drilling, this drill bit comprises body, at least one ball tooth (hereinafter referred to as " surperficial ball tooth ") on the front surface and multiple gauge ball tooth with front surface, each in ball tooth has work plane, the feature of this drill bit is, compared with the summit of any sweep of at least one surperficial ball tooth work plane, the curvature at least partially with the summit with more protrusions of at least one gauge ball tooth.
In one form, described or each surperficial ball tooth offsets relative to the central axis of drill bit.
The detailed description of one or more embodiment of the present invention is in company with being provided together by the accompanying drawing in accordance with the principles of the present invention shown in example.Although the present invention describes together with these embodiments, it should be understood that, the present invention is not limited to any embodiment.On the contrary, scope of the present invention is only by the restriction of appending claims, and the present invention comprises multiple alternative, modification and equivalent example.In order to exemplary purpose, multiple detail proposes in the following description, to provide thorough understanding of the present invention.
The present invention can with when do not have in these details some or all and implement according to claims.In order to clear, in technical field related to the present invention, known technical data is not described in detail, makes the present invention can not by optionally fuzzy.
Accompanying drawing explanation
In order to make better to understand the present invention, with reference to the exemplary embodiment described by means of accompanying drawing in this article, the present invention is described, in the accompanying drawings:
Fig. 1 is through the longitudinal section of the body of drill bit; And
Fig. 2 is through the cross-sectional view of the body of prior art drill bit.
In the following description, throughout several diagrams of accompanying drawing, identical Reference numeral represents identical parts.
Detailed description of the invention
With reference now to Fig. 1, which describe for impacting the drill bit (1) used in drilling.Described drill bit (1) comprises the drill body (2) be made up of suitable tool steel grade, this drill body (2) has: front surface (4), and this front surface (4) is relative to the basic horizontal expansion of drill body (2) longitudinal axis; And rear thread portion (6), this rear thread portion (6) makes drill bit (1) can be attached to the drilling rod (not shown) with respective threaded in the mode that can be threaded connection with.
Protrude also axially outstanding multiple surperficial ball tooth (10) from front surface (4) to be positioned at front surface (4).
The multiple gauge ball teeth (20) tilted at a certain angle relative to the longitudinal axis of drill bit (1) are arranged around the periphery of front surface (4).Described gauge ball tooth (20) is protruded and gives prominence to, and makes the diameter being limited drawbore by gauge ball tooth (20).
(the 10 and 20) press-fit of ball tooth or shrink-fit in described drill body (2), and are commonly referred to and are even separately called insert.Ball tooth (10 and 20) is made up of the material that the material of hardness ratio drill body (2) is hard.
In oneainstance, each ball tooth (10 and 20) has the cylindrical body with work plane (10a), and in another scenario, work plane be each ball tooth (10 and 20) when drilling and rock interactional that a part.In this embodiment, each in these work planes (10a and 20a) is convex bending.From the body part that is associated as shown in Figure 1, the protrusion distance F of measured surface ball tooth work plane (10a) and the outstanding distance G of gauge ball tooth work plane (20a), wherein G is greater than F.
The curvature of at least one surperficial ball tooth (10) work plane (10a) of the ratio of curvature of each gauge ball tooth (20) work plane (20a) is more obvious.In other words, the radius of curvature (RF) of the work plane (10a) of surperficial ball tooth (10) is obviously large than the radius of curvature (RG) of the work plane (20a) of gauge ball tooth (20).
Further, in the situation of surperficial ball tooth (10), the radius of curvature (RF) of work plane is significantly greater than the radius (R ') of the cylindrical body of surperficial ball tooth (10).In contrast, for each the ball tooth in gauge ball tooth (20), the radius of curvature (RG) of work plane equals the radius (R ") of the cylindrical body of gauge ball tooth (20) substantially.
Then, in the situation of surperficial ball tooth (10), the radius of curvature (RF) of work plane (10a) is large to making work plane close to flat surfaces or becoming general planar surface, therefore surperficial ball tooth (10) work plane (10a) does not have projection or has very little projection, and certainly little than the projection of gauge ball tooth (20) work plane (20a).
The test carried out demonstrates, and uses the power penetrated required for rock of sharper ball tooth such as gauge ball tooth (20) to be less than the power of the more blunt ball tooth of use such as needed for surperficial ball tooth (10).
So, suppose when scar is smooth, for the boring in any rock and literary composition, the penetration resistance at the bight place between the one end and side in hole will be higher than this end place in hole, according to the present invention, if the work plane (10a) of work plane (20a) specific surface ball tooth (10) of gauge ball tooth (20) is sharper, then favourable, this is because this will need less penetration power, thus cause the waste of impact energy energy that is less and that reflect conversely less.Less reflected energy means the damage of drilling device and associated device less.
Compared with drill bit such as shown in Fig. 2 of the drill bit of prior art, the further advantage of drill bit described above (1) is, the higher and drilling efficiency of drilling speed improves.
The shape of all gauge ball teeth in drill bit can be substantially identical, and the shape of all surface ball tooth in described drill bit or a drill bit can be substantially identical.
Throughout manual and appending claims, except non-textual otherwise needs, word " comprise " and " comprising " and variant such as " contains " and " comprising " be interpreted as meaning and comprise described entirety or described overall group, but do not get rid of that any other is overall or overall group.
Any prior art of the reference in this manual not, also should not be construed, and admit any type of following suggestion, that is, these prior aries become a part for common practise.
It should be appreciated by those skilled in the art that the present invention is not limited to the use to described embody rule of the present invention.The present invention is also not limited to of the present invention about concrete element that is described herein or that record and/or the specific embodiment of feature.Should be appreciated that, in the case of without departing from the principles of the present invention, various modification can be made.Therefore, the present invention is understood to include all these modification within the scope of the present invention.
Claims (11)
1. the drill bit (1) for using in impact drilling, described drill bit (1) comprises the body (2) with front surface (4), be positioned at least one the ball tooth (hereinafter referred to as " surperficial ball tooth ") (10) on described front surface and multiple gauge ball tooth (20), each in described ball tooth (10 and 20) has work plane (10a and 20a), it is characterized in that, described at least one, gauge ball tooth (20) work plane (20a) has following curvature at least partially, the curvature of any sweep of this ratio of curvature surperficial ball tooth (10) work plane (10a) described at least one departs from smooth more, the described part of gauge ball tooth (20) work plane (20a) described at least one is made to protrude more than the described part of ball tooth (10) work plane (10a) surperficial described at least one.
2. drill bit according to claim 1, is characterized in that, the described work plane (10a and 20a) of each in described surperficial ball tooth and gauge ball tooth (10 and 20) be bending at least partially.
3. drill bit according to claim 2, is characterized in that, the entirety of the described work plane (10a and 20a) of each in described surperficial ball tooth and gauge ball tooth (10 and 20) is bending.
4. drill bit according to claim 3, it is characterized in that, the curvature of the described work plane (10a) of at least one surperficial ball tooth (10) of the ratio of curvature of the described work plane (20a) of gauge ball tooth (20) described at least one departs from smooth more.
5. the drill bit according to claim 3 or 4, it is characterized in that, each gauge ball tooth (20) work plane (20a) is protruded more from body part associated therewith than described or each surperficial ball tooth (10) work plane (10a).
6. the drill bit according to any one of claim 3 to 5, is characterized in that, the described work plane (20a) of at least one gauge ball tooth (20) is basic hemispherical.
7. the drill bit according to any one of claim 3 to 6, is characterized in that, the described work plane (10a) of at least one surperficial ball tooth (10) is roughly configured as one section of similar hemisphere.
8. the drill bit (1) according to any one of aforementioned any one claim, is characterized in that, each in described surperficial ball tooth and gauge ball tooth (10 and 20) comprises substantial cylindrical body.
9. the drill bit (1) according to any one of aforementioned any one claim, is characterized in that, described drill bit (1) comprises multiple surperficial ball tooth (10).
10. the drill bit (1) according to any one of aforementioned any one claim, is characterized in that, described drill bit (1) has central axis, and described or each surperficial ball tooth (10) offsets relative to described central axis.
11. drill bits according to claim 1, is characterized in that, the described work plane (10a) of at least one surperficial ball tooth (10) is smooth or close to substantially flat.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12160762.6A EP2642063A1 (en) | 2012-03-22 | 2012-03-22 | A drill bit for percussive drilling |
| EP12160762.6 | 2012-03-22 | ||
| PCT/EP2013/055613 WO2013139755A2 (en) | 2012-03-22 | 2013-03-19 | Drill bit for percussive drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104302862A true CN104302862A (en) | 2015-01-21 |
Family
ID=47915194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380015884.1A Pending CN104302862A (en) | 2012-03-22 | 2013-03-19 | Drill bit for percussive drilling |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US20150041223A1 (en) |
| EP (1) | EP2642063A1 (en) |
| KR (1) | KR20140143402A (en) |
| CN (1) | CN104302862A (en) |
| AU (1) | AU2013234472A1 (en) |
| BR (1) | BR112014023136A2 (en) |
| CA (1) | CA2867225A1 (en) |
| CL (1) | CL2014002496A1 (en) |
| MX (1) | MX2014011175A (en) |
| PE (1) | PE20142413A1 (en) |
| RU (1) | RU2014142447A (en) |
| WO (1) | WO2013139755A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441359A (en) * | 2019-01-04 | 2019-03-08 | 西南石油大学 | For the cloth toothing of the impact geophysical prospecting bit of shale |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3446004A1 (en) * | 1983-12-19 | 1985-07-04 | Santrade Ltd., Luzern | STONE DRILL TIP |
| EP1007818B1 (en) * | 1995-06-20 | 2002-04-03 | Sandvik Aktiebolag (publ) | Rock drill bit |
| CN1643232A (en) * | 2002-04-04 | 2005-07-20 | 山特维克公司 | Percussion drill bit and a button therefor |
| CN101006247A (en) * | 2004-08-17 | 2007-07-25 | 山特维克知识产权股份有限公司 | A rock drill bit and a thread joint |
| EP1694939B1 (en) * | 2003-12-09 | 2008-06-11 | Sandvik Intellectual Property AB | Rock drill bit |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3519092A (en) | 1968-09-16 | 1970-07-07 | Kennametal Inc | Percussion bit |
| US3997011A (en) | 1975-05-27 | 1976-12-14 | Staroba Otto R | Button drill bit structure |
| SE448108C (en) | 1983-04-05 | 1989-08-14 | Sandvik Ab | MOUNTAIN DRILL FOR BATTLE DRILLING OF SMALL HAIRS INCLUDING TILTED PERIPHERAL PINS |
| SE452636B (en) * | 1983-09-20 | 1987-12-07 | Santrade Ltd | Rock drill bit |
| SE523853C2 (en) * | 1997-06-30 | 2004-05-25 | Smith International | Drill bit with large inserts |
| US5947215A (en) | 1997-11-06 | 1999-09-07 | Sandvik Ab | Diamond enhanced rock drill bit for percussive drilling |
| US6196340B1 (en) * | 1997-11-28 | 2001-03-06 | U.S. Synthetic Corporation | Surface geometry for non-planar drill inserts |
| US6655480B1 (en) * | 2000-10-05 | 2003-12-02 | Kennametal Inc. | Cutting insert for percussion drill bit |
| US7527110B2 (en) * | 2006-10-13 | 2009-05-05 | Hall David R | Percussive drill bit |
| US20100025114A1 (en) * | 2008-01-22 | 2010-02-04 | Brady William J | PCD Percussion Drill Bit |
-
2012
- 2012-03-22 EP EP12160762.6A patent/EP2642063A1/en not_active Withdrawn
-
2013
- 2013-03-19 AU AU2013234472A patent/AU2013234472A1/en not_active Abandoned
- 2013-03-19 MX MX2014011175A patent/MX2014011175A/en unknown
- 2013-03-19 CN CN201380015884.1A patent/CN104302862A/en active Pending
- 2013-03-19 US US14/386,810 patent/US20150041223A1/en not_active Abandoned
- 2013-03-19 KR KR1020147028619A patent/KR20140143402A/en not_active Application Discontinuation
- 2013-03-19 WO PCT/EP2013/055613 patent/WO2013139755A2/en active Application Filing
- 2013-03-19 PE PE2014001458A patent/PE20142413A1/en not_active Application Discontinuation
- 2013-03-19 CA CA2867225A patent/CA2867225A1/en not_active Abandoned
- 2013-03-19 RU RU2014142447A patent/RU2014142447A/en not_active Application Discontinuation
- 2013-03-19 BR BR112014023136A patent/BR112014023136A2/en not_active IP Right Cessation
-
2014
- 2014-09-22 CL CL2014002496A patent/CL2014002496A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3446004A1 (en) * | 1983-12-19 | 1985-07-04 | Santrade Ltd., Luzern | STONE DRILL TIP |
| DE3446004C2 (en) * | 1983-12-19 | 1987-02-05 | Santrade Ltd., Luzern, Ch | |
| EP1007818B1 (en) * | 1995-06-20 | 2002-04-03 | Sandvik Aktiebolag (publ) | Rock drill bit |
| CN1643232A (en) * | 2002-04-04 | 2005-07-20 | 山特维克公司 | Percussion drill bit and a button therefor |
| EP1694939B1 (en) * | 2003-12-09 | 2008-06-11 | Sandvik Intellectual Property AB | Rock drill bit |
| CN101006247A (en) * | 2004-08-17 | 2007-07-25 | 山特维克知识产权股份有限公司 | A rock drill bit and a thread joint |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441359A (en) * | 2019-01-04 | 2019-03-08 | 西南石油大学 | For the cloth toothing of the impact geophysical prospecting bit of shale |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112014023136A2 (en) | 2017-08-22 |
| KR20140143402A (en) | 2014-12-16 |
| US20150041223A1 (en) | 2015-02-12 |
| WO2013139755A3 (en) | 2014-04-10 |
| WO2013139755A2 (en) | 2013-09-26 |
| CL2014002496A1 (en) | 2015-01-16 |
| RU2014142447A (en) | 2016-05-20 |
| AU2013234472A1 (en) | 2014-09-25 |
| PE20142413A1 (en) | 2015-01-21 |
| MX2014011175A (en) | 2014-11-14 |
| CA2867225A1 (en) | 2013-09-26 |
| EP2642063A1 (en) | 2013-09-25 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150121 |