CN105201414B - Volcanic rock drill bit - Google Patents
Volcanic rock drill bit Download PDFInfo
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- CN105201414B CN105201414B CN201410294334.4A CN201410294334A CN105201414B CN 105201414 B CN105201414 B CN 105201414B CN 201410294334 A CN201410294334 A CN 201410294334A CN 105201414 B CN105201414 B CN 105201414B
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- carcass
- drill bit
- volcanic rock
- head
- rock drill
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Abstract
The present invention relates to a kind of volcanic rock drill bits.The volcanic rock drill bit includes: carcass, is provided with multiple wings, and the wing extends to the tail portion of the carcass from the head of the carcass on the outside of the carcass；Drill body, the carcass are set to the head of the drill body, and the head of the drill body can be connected to drilling rod；Wherein the bizet of the wing includes the impregnated cutting blocks for being configured to stratiform, and when bit drilling, the impregnated cutting blocks are ground rock.Abrasiveness is good when being crept into using this volcanic rock with drill bit, rate of penetration is fast.
Description
Technical field
The present invention relates to deep-well Stratum of Volcanic Rocks breaking technique for rock field, in particular to a kind of volcanic rock drill bit.
Background technique
Oil field at home deep-well, the generally existing abrasiveness in ultradeep well medium and deep stratum is high, hardness is big, drillability is poor and the borehole wall
The features such as unstability, causes the mechanical drilling speed in such stratum of drilling low, and drilling period is long.PDC(Polycrystalline
Diamond Compact) drill bit and diamond-impregnated bit be two different self-sharpening drill bits, the former is to cut in a manner of broken rock
Based on；The latter is usually used cooperatively with high-speed turbine power drilling tool with ultra small scale manufacture and grinding mode of application fractured rock, but
It is with regard to from the point of view of the prior art, above two drill bit easily occurs with being difficult to wedging at the high stratum of the abrasivenesses such as drilling volcanic rock
The low problem of layer, rate of penetration.The development of Tarim Basin Markit County area Permian Volcanic, stratum abrasiveness height, drillability
Difference, the easy unstability of the borehole wall collapse, and therefore, are badly in need of the volcanic rock that a kind of abrasive resistant is good, rate of penetration is fast, security performance is high and bore
Head.
Summary of the invention
For above-mentioned problem, the invention proposes a kind of volcanic rock drill bits, are crept into using this volcanic rock with drill bit
When abrasiveness is good, rate of penetration is fast, thus shorten the period of drilling work.
The invention proposes a kind of volcanic rock drill bits, comprising: carcass is provided with multiple wings, and wing is from carcass
Head extends to the tail portion of carcass on the outside of carcass；Drill body, carcass are bonded to the head of drill body, and drill bit sheet
The tail portion of body can be connected to drilling rod；Wherein the bizet of wing includes the impregnated cutting blocks for being configured to stratiform, when bit bores
Into when, impregnated cutting blocks are ground rock.
It can thus be seen that capableing of the impregnated cutting of rock cutting due to being provided on the wing of the volcanic rock drill bit
Block, drill bit enter shaft bottom start creep into work when, first in stratiform impregnated cutting blocks be ground fractured rock, in addition impregnated cutting
Block increases the operation thickness of drill bit, and work area when drill bit is contacted with shaft bottom reduces, and effectively increases drill bit broken rock
Efficiency and drill bit drilling speed, thus shorten drilling work period.
In one embodiment, impregnated cutting blocks include the table edge working lining for being set to its surface layer, and table inlays working lining setting
There is natural diamond.Thus the abrasive resistant and rate of penetration of wing bizet are improved.
In one embodiment, impregnated cutting blocks further include impregnated working lining, and impregnated working lining is set to table edge working lining
Inside, be provided with synthetic diamond single crystal's body in impregnated working lining.Drill bit is in drilling process, when table inlays the natural of working lining
After caratloss is complete, the impregnated working lining of wing is recycled to work on, so as to improve the service life of drill bit.
In one embodiment, the granularity of natural diamond is 8-10/carat, and the granularity of synthetic diamond single crystal's body is
20-40 mesh.The granularity of natural diamond and synthetic diamond single crystal's body can be had using above-mentioned granularity while saving cost
Effect ground grinding rock.
In one embodiment, the component of carcass includes rare earth element.Rare earth element is added in carcass, so that drill bit
Bending strength improves 30%-50%, and hardness improves 10%-15%.
In one embodiment, the operation thickness of impregnated cutting blocks is 20-30mm.Thus it is mentioned in the case where considering cost
The service life of high drill bit.
In one embodiment, wing further includes gauge, and gauge is prolonged on the outside of the carcass from the bizet of wing
It stretches, wherein length of the gauge along drill axis direction is not less than 90mm, since gauge has the function of reaming and back reaming,
The gauge of wing makes the gauge effect of wing better using above-mentioned size, improves drilling well effect.
In one embodiment, the head of carcass is provided with 6-10 hydrophthalmia, and the diameter of hydrophthalmia is 6-15mm.Thus
The rock cut is rinsed in time and is cooled in time for the drill bit of continuous work.
In one embodiment, non-interfering three toothrow of formula eccentric setting at the center on carcass head, wherein in three toothrows
One row includes 3 PDC composite sheets, another two rows of including 2 PDC composite sheets in three toothrows.Since PDC composite sheet has wearability
Feature high, toughness is good, non-interfering three toothrow of formula eccentric setting at the center on carcass head, avoids due to carcass head
The problem of being worn in advance at the center caused by revolving speed is low at the center in portion, linear velocity is slow.
In one embodiment, the diameter of PDC composite sheet is 9-15mm.Thus it is conducive to the cutting of rock.
It in one embodiment, where three toothrows is 30- by the cutting circular diameter in the center of circle of the central point on carcass head
100mm.To improve the efficiency of drill bit drilling.
In one embodiment, carcass is provided with 6 wing groups, and each wing group includes spaced 2 wings, and 2
Any of a wing self-cutting circular arc is extended radially to the periphery on carcass head, and between 2 adjacent wing groups
It is provided with flow path groove, flow path groove self-cutting circle is extended radially to the periphery on carcass head.Since flow path groove is radial, increase
Add the area of flow path groove, conducive to the timely cooling and chip removal of drill bit, while sillar is held in flow path groove.6 wing groups are set,
Each wing group includes 2 wings, so that the drilling cutting ability of drill bit is more excellent.
Compared with the prior art, the advantages of the present invention are as follows the setting of, impregnated cutting blocks of wing bizet so that drill bit with
Work area when shaft bottom contacts is reduced, and the intensity of carcass and impregnated cutting blocks increases, and can be born biggish bit pressure and torque, be made
Obtaining drill bit can be used cooperatively with high speed screw rod, which thereby enhance the versatility of drill bit, reduce the cost of drilling well work, mention
The drilling depth and drilling efficiency of the high drilling speed of drill bit, single drill bit, shorten drilling period, improve oilfield prospecting developing into
Degree.
Detailed description of the invention
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein:
Fig. 1 is the top view of volcanic rock drill bit according to the present invention；
Fig. 2 is the cross-sectional view of volcanic rock drill bit according to the present invention.
Identical component is indicated by identical appended drawing reference in the figure.The attached drawing is not drawn according to the actual ratio.
Specific embodiment
Below in conjunction with attached drawing, the present invention will be further described.
Volcanic rock drill bit provided by the invention includes carcass and drill body, and the head of drill body is arranged in carcass,
The drill bit ontology is for connecting drill bits to drilling rod.Drill bit and its part of the invention will be described in detail belows.
As depicted in figs. 1 and 2, carcass 3 is provided with multiple wings 4, and wing 4 prolongs from the head of carcass 3 along the outside of carcass 3
Extend to the tail portion of carcass 3；The head of drill body 7 is arranged in carcass 3, and the tail portion of drill body 7 is connectable on drilling rod, by
This drilling rod can drive bit；Wherein the bizet 40 of wing 4 includes the impregnated cutting blocks 401 for being configured to stratiform, works as drill bit
When rotary drilling, impregnated cutting blocks 401 are ground rock.
In a preferred embodiment, impregnated cutting blocks 401 include the table edge working lining for being set to its surface layer, and table inlays work
Layer is provided with natural diamond.Thus the abrasive resistant and rate of penetration of the bizet 40 of wing 4 are improved.
Further, impregnated cutting blocks 401 further include impregnated working lining, and impregnated working lining is set to the interior of table edge working lining
Side is provided with synthetic diamond single crystal's body in impregnated working lining.Drill bit is in drilling process, when the natural Buddha's warrior attendant of table edge working lining
After stone runs out of, the impregnated working lining of wing 4 is recycled to work on, so as to improve the service life of drill bit.
Preferably, the granularity of natural diamond is 8-10/carat, and the granularity of synthetic diamond single crystal's body is 20-40 mesh.
The granularity of natural diamond and synthetic diamond single crystal's body is effectively ground while can saving cost again using above-mentioned granularity
Rock.
In a preferred embodiment, the component of carcass 3 includes rare earth element.Rare earth element example is added in carcass 3
Such as lanthanum or cerium, so that the bending strength of drill bit improves 30%-50%, hardness improves 10%-15%.
Preferably, the operation thickness of impregnated cutting blocks 401 is 20-30mm.Thus the service life of wing is improved.
Further, wing 4 further includes gauge 41, and gauge 41 is from the bizet 40 of wing 4 along the outside of the carcass 3
Extend, wherein length of the gauge 41 along drill axis direction is not less than 90mm.Since gauge 41 has reaming and back reaming
Function, so ensure smoothly creep into the case where, longer 41 gauge function of gauge is better, and drilling well effect is better.
Preferably, the head of carcass 3 is provided with 6-10 hydrophthalmia 2, and the diameter of hydrophthalmia 2 is 6-15mm.Thus in time
It rinses the rock cut and cools in time for the drill bit of continuous work.
In addition, as shown in Figure 1, non-interfering three toothrow of formula eccentric setting at the center on 3 head of carcass, wherein in three toothrows
One row includes 3 PDC composite sheets 1, another two rows of including 2 PDC composite sheets 1 in three toothrows.Specifically, the row in another two rows
Inside by 2 head of carcass is arranged, and another row in another two rows arranges by the outside on 2 head of carcass.With where three toothrows with
The central point on 3 head of carcass is that the PDC composite sheet 1 in the cutting circle 8 (referring to Fig. 1) in the center of circle, between each row is staggeredly arranged, with to the greatest extent
Three toothrows are possibly made to cut a complete cutting circle 8, i.e. three toothrows are when bit is crept into, 3 PDC composite sheets
After for row cutting, the Rock Cutting that the PDC composite sheet in another two rows omits it gets off.It is mentioned by this cloth tooth mode
The cutting speed of high PDC composite sheet 1, improves the drilling efficiency of drill bit.
Further, the diameter of PDC composite sheet 1 is 9-15mm.Test proves that PDC composite sheet 1 uses above-mentioned size can be with
Preferable rock cutting.In a preferred embodiment, where three toothrows using central point the cutting as the center of circle on 3 head of carcass
The diameter for cutting circle 8 is 30-100mm.
Shown in Figure 1 as preferred embodiment, carcass 3 is provided with 6 wing groups, and each wing group includes interval
2 wings being arranged, any of 2 wings self-cutting circle 8 are extended radially to the periphery on 3 head of carcass, and adjacent
4 groups of 2 wings between be provided with flow path groove 6,6 self-cutting of flow path groove circle 8 is extended radially to the periphery on 3 head of carcass.
Since flow path groove 6 is radial, increase the area of flow path groove 6, conducive to the timely cooling and chip removal of drill bit, while radiated entend
Diversion trench 6 avoid sillar and be held in flow path groove 6.6 wing groups are set, each wing group includes 2 wings 4, so that
The drilling cutting ability of drill bit is more excellent.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.The invention is not limited to Wen Zhonggong
The specific embodiment opened, but include all technical solutions falling within the scope of the claims.
Claims (12)
1. a kind of volcanic rock drill bit characterized by comprising
Carcass, is provided with multiple wings, and the wing extends on the outside of the carcass described from the head of the carcass
The tail portion of carcass；
Drill body, the carcass is bonded to the head of the drill body, and the tail portion of the drill body can connect
To drilling rod；
Wherein the bizet of the wing includes the impregnated cutting blocks for being configured to stratiform, described pregnant when bit drilling
It inlays cutting blocks and is ground rock；
Non-interfering three toothrow of formula eccentric setting at the center on the head of the carcass, three toothrow is in the carcass head
Heart point is that the center of circle forms cutting circle；
The carcass is provided with multiple wing groups, and each wing group includes spaced 2 wings, in 2 wings
Any one extends radially to the periphery on the carcass head from the cutting circle, and sets between 2 adjacent wing groups
It is equipped with flow path groove, the flow path groove is extended radially from the cutting circle to the periphery on the carcass head；
The head of the carcass is provided with multiple hydrophthalmias, and the hydrophthalmia is set to the carcass head and the cutting in decentralized manner
The corresponding position of circle and position corresponding with the flow path groove.
2. volcanic rock drill bit according to claim 1, which is characterized in that the impregnated cutting blocks include being set to its table
The table of layer inlays working lining, and the table edge working lining is provided with natural diamond.
3. volcanic rock drill bit according to claim 2, which is characterized in that the impregnated cutting blocks further include impregnated work
Layer, the impregnated working lining are set to the inside of the table edge working lining, are provided with diamond in the impregnated working lining
Monocrystal.
4. volcanic rock drill bit according to claim 3, which is characterized in that the granularity of the natural diamond is 8-10
Grain/carat, the granularity of synthetic diamond single crystal's body are 20-40 mesh.
5. volcanic rock drill bit according to any one of claim 1 to 4, which is characterized in that the group subpackage of the carcass
Include rare earth element.
6. volcanic rock drill bit according to claim 3, which is characterized in that the operation thickness of the impregnated cutting blocks is
20-30mm。
7. volcanic rock drill bit according to claim 6, which is characterized in that the wing further includes gauge, the guarantor
Diameter portion extends from the bizet of the wing along the outside of the carcass, wherein length of the gauge along the drill axis direction
Degree is not less than 90mm.
8. volcanic rock drill bit according to claim 3, which is characterized in that the head of the carcass is provided with 6-10 water
Eye, and the diameter of the hydrophthalmia is 6-15mm.
9. volcanic rock drill bit according to claim 8, which is characterized in that the row in three toothrow includes 3 PDC
Composite sheet, the another every row of two rows in three toothrow includes 2 PDC composite sheets.
10. volcanic rock drill bit according to claim 9, which is characterized in that the diameter of the PDC composite sheet is 9-
15mm。
11. volcanic rock drill bit according to claim 9, which is characterized in that the cutting circular diameter is 30-100mm.
12. volcanic rock drill bit according to claim 11, which is characterized in that the carcass is provided with 6 wing groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410294334.4A CN105201414B (en) | 2014-06-26 | 2014-06-26 | Volcanic rock drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410294334.4A CN105201414B (en) | 2014-06-26 | 2014-06-26 | Volcanic rock drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105201414A CN105201414A (en) | 2015-12-30 |
| CN105201414B true CN105201414B (en) | 2018-12-28 |
Family
ID=54949327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410294334.4A Active CN105201414B (en) | 2014-06-26 | 2014-06-26 | Volcanic rock drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105201414B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0028976D0 (en) * | 1999-11-29 | 2001-01-10 | Baker Hughes Inc | Impregnated bit with pdc cutters in cone area |
| CN202017455U (en) * | 2011-05-05 | 2011-10-26 | 四川川石金刚石钻头有限公司 | Compound impregnated bit |
| CN102268966A (en) * | 2011-06-27 | 2011-12-07 | 重庆大学 | Hard rock crushing drill bit and method for crushing hard rock |
| CN103758463A (en) * | 2014-01-24 | 2014-04-30 | 四川万吉金刚石钻头有限公司 | Diamond-impregnated bit of arc tooth |
| CN103758458A (en) * | 2014-01-10 | 2014-04-30 | 西南石油大学 | Hybrid single-cone drill bit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2904186A4 (en) * | 2012-10-02 | 2016-06-22 | Varel Int Ind Lp | Blade flow pdc bits |
-
2014
- 2014-06-26 CN CN201410294334.4A patent/CN105201414B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0028976D0 (en) * | 1999-11-29 | 2001-01-10 | Baker Hughes Inc | Impregnated bit with pdc cutters in cone area |
| CN202017455U (en) * | 2011-05-05 | 2011-10-26 | 四川川石金刚石钻头有限公司 | Compound impregnated bit |
| CN102268966A (en) * | 2011-06-27 | 2011-12-07 | 重庆大学 | Hard rock crushing drill bit and method for crushing hard rock |
| CN103758458A (en) * | 2014-01-10 | 2014-04-30 | 西南石油大学 | Hybrid single-cone drill bit |
| CN103758463A (en) * | 2014-01-24 | 2014-04-30 | 四川万吉金刚石钻头有限公司 | Diamond-impregnated bit of arc tooth |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105201414A (en) | 2015-12-30 |
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