CN105909175A - Insert cone drill bit - Google Patents
Insert cone drill bit Download PDFInfo
- Publication number
- CN105909175A CN105909175A CN201610517631.XA CN201610517631A CN105909175A CN 105909175 A CN105909175 A CN 105909175A CN 201610517631 A CN201610517631 A CN 201610517631A CN 105909175 A CN105909175 A CN 105909175A
- Authority
- CN
- China
- Prior art keywords
- cone
- bit
- drill bit
- tooth
- insert
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/16—Roller bits characterised by tooth form or arrangement
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
- E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts
Abstract
The invention relates to the technical field of petroleum drilling and well cementing, in particular to an insert cone drill bit. The drill bit comprises a cone, a palm, gradient cemented carbide teeth, a positioning steel ball and a bearing sealing ring, wherein the positioning steel ball is arranged between R grooves of the cone and the palm; the bearing sealing ring is arranged in a cone hole slot at the joint root of the palm and palm shaft of the cone drill bit; a mounting hole is formed in the outer conical surface of the cone; the gradient cemented carbide teeth are in interference fit with the mounting hole; each cemented carbide tooth comprises a core part and a tooth surface part which is integrally molded with the core part. The gradient cemented carbide tooth insert cone drill bit integrates the characteristics of wear resistance and overall toughness, and the teeth are wear-resistant and cannot broken in the using process, so that the service lives of the carbide teeth of the insert cone drill bit are prolonged, the drill bit has high cutting efficiency, and the drilling cost is reduced.
Description
Technical field
The present invention relates to oil drilling cementing technology field, particularly relate to a kind of insert bit.
Background technology
Rock bit is a kind of instrument of fractured rock in the earth's crust.The rock bit used in terms of oil drilling and other mining drill spies can be divided into single-cone rotary drill bit, two rock bit, tricone bit etc., and the gear wheel being cut tooth by bit leg and band is constituted.Rock bit is divided into two types according to material and the structure of gear wheel cutting tooth, the first is steel tooth bit, cutting tooth on its gear wheel is all formed by cone body material milling, the second is insert bit, the hard-metal insert on the outer poppet surface of gear wheel of the cutting all inserts of tooth on its gear wheel.Steel tooth bit is mainly used in soft formation, and insert bit can be applicable to soft to hard formation, and currently used more for insert bit, the present invention is also the technological improvement done for insert bit.The when that in the past insert bit using in the stratum such as the strong sandstone of abrasiveness, conglomerate, the hard-metal insert of good toughness is the most wear-resisting, and can often there is a large amount of broken teeth phenomenon in the good hard-metal insert of hardness high-wearing feature, cause insert bit short for service life, rate of penetration is slow, and stock-removing efficiency is low.
Summary of the invention
It is an object of the invention to overcome the deficiency of above-mentioned technology, and provide a kind of insert bit, stock-removing efficiency is high.
The present invention for achieving the above object, by the following technical solutions:
A kind of insert bit, it is characterised in that: include gear wheel, bit leg, gradient hard alloy tooth, locking ball and bearing sealed ring；Described locking ball is arranged between " R " groove of described gear wheel and bit leg, described bearing sealed ring is contained in cone bit palm and is connected in the gear wheel hole slot of root with bit leg axle, the outer poppet surface of described gear wheel is provided with installing hole, described gradient hard alloy tooth is connected with described installing hole interference, and described hard-metal insert includes core and tooth exterior portion integrated with it.
Preferably, described graded alloy tooth is any one of conisphere shape, spoon shape, spherical, wedge shape.
The invention has the beneficial effects as follows: compared with prior art, the method have the advantages that 1, stock-removing efficiency high, rate of penetration is fast.The when that in the past insert bit using in the stratum such as the strong sandstone of abrasiveness, conglomerate, the carbide button of good toughness is the most wear-resisting, and can often there is a large amount of broken teeth phenomenon in the good carbide button of hardness high-wearing feature, gradient hard alloy tooth insert bit combines wearability and the good feature of overall flexibility, during use, tooth is the most wear-resisting but also does not haves broken teeth, which adds the service life of insert bit carbide button, there is higher stock-removing efficiency, reduce drilling cost.
2, safety in utilization is good.Rock bit uses be substantially reduced service life broken teeth or tooth wear too fast meeting precocity bearing sealed ring often occur in down-hole, so that too early damage, consequently, it is possible to there will be the drilling failures such as lost cone.Gradient hard alloy tooth insert bit tooth is the most wear-resisting but also does not haves broken teeth, thus considerably increases the security of use.
Accompanying drawing explanation
Fig. 1 is the structural representation of rock bit of the present invention；
Fig. 2 is the structural representation of hard-metal insert in the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and preferred embodiment describe in detail the present invention detailed description of the invention.As it is shown in figure 1, Fig. 1 is cone bit cone 2 of the present invention and the assembling assumption diagram of the graded alloy tooth 3 of dress on bit leg 1 and gear wheel, graded alloy tooth 3 can be contained in any tooth row position on gear wheel 2 male cone (strobilus masculinus).Graded alloy tooth 3 can be any one of conisphere shape, spoon shape, spherical, wedge shape etc..
Fig. 2 is the structural representation of graded alloy tooth of the present invention, and gradient hard alloy tooth surface 4 is the material that the amount containing cobalt is low, hardness is higher, and core 5 is the preferable material of toughness, defines outer hard interior tough material structure.
As shown in Figure 1, the gear wheel 2 of insert bit is assembled together with bit leg 1, before gear wheel 2 assembles with bit leg 1, first gradient hard alloy tooth installs on the outer poppet surface of the most hole-drilled gear wheel with the method for force fit, then in the assembling carrying out gear wheel 2 and bit leg 1.
Rock bit mainly by impact, crush and shear in the way of fractured rock, the performance quality of drill teeth directly determine whole drill bit use time length, drilling depth number etc..Gradient hard alloy tooth insert bit combines wearability and the good feature of overall flexibility, during use, tooth is the most wear-resisting but also does not haves broken teeth, which adds the service life of insert bit carbide button, has higher stock-removing efficiency, rate of penetration is fast, reduces drilling cost.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (2)
1. an insert bit, it is characterised in that: include gear wheel, bit leg, gradient hard alloy tooth, locking ball and bearing sealed ring；Described locking ball is arranged between " R " groove of described gear wheel and bit leg, described bearing sealed ring is contained in cone bit palm and is connected in the gear wheel hole slot of root with bit leg axle, the outer poppet surface of described gear wheel is provided with installing hole, described gradient hard alloy tooth is connected with described installing hole interference, and described hard-metal insert includes core and tooth exterior portion integrated with it.
Insert bit the most according to claim 1, it is characterised in that: described graded alloy tooth is any one of conisphere shape, spoon shape, spherical, wedge shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610517631.XA CN105909175A (en) | 2016-06-30 | 2016-06-30 | Insert cone drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610517631.XA CN105909175A (en) | 2016-06-30 | 2016-06-30 | Insert cone drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105909175A true CN105909175A (en) | 2016-08-31 |
Family
ID=56754024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610517631.XA Pending CN105909175A (en) | 2016-06-30 | 2016-06-30 | Insert cone drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105909175A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4562892A (en) * | 1984-07-23 | 1986-01-07 | Cdp, Ltd. | Rolling cutters for drill bits |
| CN2336079Y (en) * | 1998-04-24 | 1999-09-01 | 江汉石油管理局钻头厂 | Scoop chisel insert for insert bit |
| CN2486727Y (en) * | 2001-06-01 | 2002-04-17 | 西南石油学院 | Tungsten carbide insert roller bit using orifice end face positioning mode mosaic tooth |
| CN103790518A (en) * | 2014-02-28 | 2014-05-14 | 天津立林钻头有限公司 | Roller bit |
| CN205876192U (en) * | 2016-06-30 | 2017-01-11 | 天津立林钻头有限公司 | Insert bit |
-
2016
- 2016-06-30 CN CN201610517631.XA patent/CN105909175A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4562892A (en) * | 1984-07-23 | 1986-01-07 | Cdp, Ltd. | Rolling cutters for drill bits |
| CN2336079Y (en) * | 1998-04-24 | 1999-09-01 | 江汉石油管理局钻头厂 | Scoop chisel insert for insert bit |
| CN2486727Y (en) * | 2001-06-01 | 2002-04-17 | 西南石油学院 | Tungsten carbide insert roller bit using orifice end face positioning mode mosaic tooth |
| CN103790518A (en) * | 2014-02-28 | 2014-05-14 | 天津立林钻头有限公司 | Roller bit |
| CN205876192U (en) * | 2016-06-30 | 2017-01-11 | 天津立林钻头有限公司 | Insert bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160831 |