CN208310700U - A kind of ansa shape cutting tooth - Google Patents
A kind of ansa shape cutting tooth Download PDFInfo
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- CN208310700U CN208310700U CN201820792048.4U CN201820792048U CN208310700U CN 208310700 U CN208310700 U CN 208310700U CN 201820792048 U CN201820792048 U CN 201820792048U CN 208310700 U CN208310700 U CN 208310700U
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- convex ridge
- cutting tooth
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Abstract
The utility model discloses a kind of ansa shape cutting tooths, including cylindrical body, it is characterized by: being equipped with increment face in the upper end of ontology, crest top land is equipped at the outer rim of upper end, side wall is equipped with flank, the increment face includes the transition face of at least two inclined intersections, each transition face is intersected in the increment face that ontology upper end face composition is in evagination, two neighboring transition face intersection constitutes a convex ridge, wherein the outer end of a convex ridge crosses with crest top land, the flank includes in the respectively arranged two inclined wedge surfaces in the two sides of the convex ridge to cross with crest top land, the upper end of two inclined wedge surfaces extends to increment face, ansa position is constituted with crest top land and convex ridge, the lower end of inclined wedge surface extends to this body sidewall or ontology bottom surface.The utility model can effectively disperse stress of the cutting tooth in broken rock by setting ansa position, improve cutting tooth shock resistance, and ansa position can effectively wedge stratum, and effect release reservoir stress improves efficiency of breaking rock.
Description
Technical field
The utility model relates to a kind of ansa shape cutting tooths, are applied to oil and natural gas drilling technology field.
Background technique
In the exploration and development of oil and natural gas resource in recent years, deep drilling and ultradeep well become raising oil gas money
The main force of source exploitation can usually encounter hard formation and interlayer stratum, and as well depth increases in such oil/gas drilling,
Drilling cost is higher and higher, therefore improves the bit speed of hard formation and interlayer stratum, becomes to shorten drilling period and reduce and bore
The important channel of well cost and method.It is known that preferred PDC drill bit drilling well has become soft into medium hardness strata drilling
For the behavioral standard of oil drilling industry；However, in drilling practice, vibration drill bit what strata drilling in office can all generate, and
It bores and meets hard formation and interlayer stratum, the vibration that drill bit occurs is even more serious, can generate drill bit " convolution ", it is tight to will cause PDC drill bit
The premature wear of weight can accelerate the passivation and drill bit failure of drill bit；More bit change will increase, the tripping operation time, will increase
Drilling cost.
Existing drill bit design scheme, although conventional knuckle-tooth drill bit has certain impact resistance, it raises speed
Effect is limited, and can only often increase bit pressure to improve rate of penetration, but this mode can accelerate abrasion and the brill of drill bit
The speed of head rust, will increase the quantity using drill bit；Therefore it has been proposed that pointed tooth improves the wedging stratum of drill bit
Ability, and then improve the efficiency of breaking rock of drill bit, but although pointed tooth is improved the ability on wedging stratum, but its structure is not
As knuckle-tooth is anti-collapse with it is wear-resisting.
Utility model content
It is a kind of anti-the technical problem to be solved by the utility model is to provide in view of the deficiency of the prior art
The ansa shape cutting tooth of impact property and efficiency of breaking rock.
The technology employed by the present utility model is a kind of ansa shape cutting tooth, including cylindrical body, feature exist
In: it is equipped with increment face in the upper end of ontology, crest top land is equipped at the outer rim of upper end, side wall is equipped with flank, the increment bread
The transition face of at least two inclined intersections is included, each transition face is intersected in the increment face that ontology upper end face composition is in evagination, phase
Lin Liangge transition face intersection constitutes a convex ridge, wherein the outer end of a convex ridge crosses with crest top land, the flank is included in
The respectively arranged two inclined wedge surfaces in two sides of the convex ridge to cross with crest top land, the upper end of two inclined wedge surfaces extend to increment face, with
Crest top land and corresponding convex ridge constitute ansa position, and the lower end of inclined wedge surface extends to this body sidewall or ontology bottom surface.
According to the above technical scheme, the ansa position is enclosed by two inclined wedge surfaces, this body side surface, convex ridge, transition face, crest top land
Made of.
According to the above technical scheme, the transition face is plane, convex globoidal, cancave cambered surface, serrated face or wavy surface, each transition face
It can be symmetrical set or asymmetry is arranged.
According to the above technical scheme, the transition face is equipped with 2-10, constitutes 1-10 convex ridge, the convex ridge opposing transition surfaces
The height of bottom surface is 0~10mm, 0~5mm of rounding at the top of convex ridge.
According to the above technical scheme, the inclined wedge surface can be plane, convex globoidal, cancave cambered surface, serrated face or wavy surface, and two partially
Wedge surface can be symmetrical arranged or asymmetric setting.
According to the above technical scheme, each transition face intersection deviates ontology upper end face 0~5mm of center.
According to the above technical scheme, radius of at least one convex ridge length more than or equal to the cylindrical body in the convex ridge
Value.
According to the above technical scheme, when convex ridge is three or more, the angle that adjacent two convex ridges are constituted is greater than or equal to
45 °, each angle is equal or unequal.
According to the above technical scheme, convex ridge does not intersect each inclined wedge surface, and two inclined wedge surfaces are inside from ontology two sides by two faces
It tilts and deflects and extend to upper end and cross with transition face and crest top land, be formed by angle with the axis of the cylindrical body
It is 0~75 °.
According to the above technical scheme, the width of the crest top land is 2-6mm.
According to the above technical scheme, ontology includes by matrix and the polycrystalline diamond layer being connected to above matrix, plycrystalline diamond Buddha's warrior attendant
Rock layers with a thickness of 1-6 ㎜, ansa position is located on polycrystalline diamond layer or on polycrystalline diamond layer and hard alloy substrate.
Have the beneficial effect that 1, the utility model by setting ansa position, can effectively divide acquired by the utility model
Stress of the cutting tooth in broken rock is dissipated, cutting tooth shock resistance is improved, ansa position can effectively wedge stratum, and effect release stratum is answered
Power improves efficiency of breaking rock；2, due to producing precrushing to stratum when ansa shape cutter breaking rock, stratum and rock are effectively cut
Bits are released effectively reservoir stress when boring chance hard formation and interlayer stratum, reduce the difficulty of drill bit broken rock, improve drill bit pair
The adaptability on stratum；3, the abrasive resistant of drill bit can be improved compared with conventional circular cutting tooth and pointed cutting tooth in ansa shape cutting tooth
Ability, extend the service life of drill bit.
Detailed description of the invention
Fig. 1 is the perspective view of embodiment one provided by the utility model.
Fig. 2 is the main view of embodiment one provided by the utility model.
Fig. 3 is the perspective view of embodiment two provided by the utility model.
Fig. 4 is the perspective view of embodiment three provided by the utility model.
Fig. 5 a is the main view of example IV provided by the utility model.
Fig. 5 b is the perspective view of example IV provided by the utility model.
The perspective view of Fig. 6 embodiment five provided by the utility model.
Fig. 7 is the perspective view of embodiment 6 provided by the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
Embodiment one:
As shown in Figure 1, 2, a kind of ansa shape cutting tooth, including cylindrical body 1 are present embodiments provided, in ontology 1
Upper end is equipped with increment face 3, and 5 are equipped with crest top land 8 at the outer rim of upper end, and side wall is equipped with flank 4, and bottom is equipped with ontology bottom surface, institute
The transition face (3a, 3b) that increment face 3 includes two inclined intersections is stated, each transition face is intersected in ontology upper end face center
The increment face in evagination is constituted, the inclined-plane Liang Ge intersection constitutes a convex ridge 2, and outer end and the crest top land 8 of the convex ridge cross, inner end
It intersects in the upper end face of the cylindrical body；The flank 4 includes two inclined wedge surfaces (4a, 4b), two inclined wedge surfaces
The upper end of (4a, 4b) extends to increment face, constitutes ansa position with crest top land and corresponding convex ridge, the lower end of inclined wedge surface extends to
This body sidewall or ontology bottom surface, 1 feather edge of cylindrical body have down bevel edge 6.
The ansa position is enclosed by two inclined wedge surfaces, this body side surface, corresponding convex ridge, transition face, crest top land.
In the present embodiment, the lower end of inclined wedge surface extends to this body sidewall, two inclined wedge surfaces (4a, 4b) and cutting tooth cylindrical body
The angle that axis is formed is respectively β and α, and α and β value range are respectively 0~75 ° (containing 0 °)；
Wherein, the height (top surface of convex ridge and the transition face bottom surface) of 2 rounding 3mm of convex ridge, convex ridge 2 are 4mm.
Wherein, ontology 1 includes by hard alloy substrate 7 and the polycrystalline diamond layer 9 being connected to above matrix 7, plycrystalline diamond gold
Hard rock layer 9 with a thickness of 1-6 ㎜, ansa position is located on polycrystalline diamond layer 8 or in polycrystalline diamond layer 8 and carbide matrix
On body 7.
When ansa shape cutting tooth works, bradawl pressure, crest top land contacts stratum first, since area is small, it is easy to wedge
Precrushing formation function is played on stratum, and as bit pressure increases, tooth wedging stratum is deepened, the inclined wedge of section transitions face 3a, 3b and part
Face 4a, 4b contact stratum, common broken rock.
Embodiment two:
If Fig. 3 shows, embodiment two is basically the same as the first embodiment, the difference is that: the lower end of inclined wedge surface extends to this
The axis of body bottom surface, i.e., two inclined wedge surfaces (4a, 4b) and the cylindrical body is formed by angle α and β is 0 °, i.e., two inclined wedges
The centerline axis parallel in face and ontology.
Embodiment three:
Embodiment three is basically the same as the first embodiment, the difference is that: transition face 3a and 3b are in asymmetry, transition face 3a
For convex globoidal, transition face 3b is cancave cambered surface, and two inclined wedge surfaces (4a, 4b) are asymmetric inclined wedge surface, inclined wedge surface 4a and the cylinder sheet
It is 30 ° that body axis, which is formed by angle β, and it is 45 ° that inclined wedge surface 4b and the cylindrical body axis, which are formed by angle α,.
Example IV:
As shown in Fig. 5 a, 5b, example IV and embodiment three are essentially identical, the difference is that: two inclined wedge surfaces (4a,
Angle α 4b) is formed by with the axis of the cylindrical body and β is 0 °, i.e., the centerline axis parallel of two inclined wedge surfaces and ontology,
Two inclined wedge surfaces (4a, 4b) are asymmetric inclined wedge surface, and inclined wedge surface 4a is serrated face or wavy surface, and inclined wedge surface 4b is cancave cambered surface.
Embodiment five:
As shown in fig. 6, embodiment five is basically the same as the first embodiment, and the difference is that: there are three the transition faces, structure
At 3 equally distributed convex ridges, the angle that adjacent two convex ridges are constituted is greater than or equal to 45 °, and each angle is equal or unequal,
The present embodiment is illustrated for equal, wherein a convex ridge 2 crosses with pointed crest top land 8.This cutting tooth passes through in ontology
The locating slot 10 of bottom surface setting is positioned.
Embodiment six:
As shown in fig. 7, embodiment six and embodiment five are essentially identical, the difference is that: two inclined wedge surfaces (4a, 4b) with
The axis of the cylindrical body is formed by angle α and β is 0 °, i.e., the centerline axis parallel of two inclined wedge surfaces and ontology.Ben Qie
Tooth is cut to be positioned by the protrusion 11 being arranged in ontology bottom surface.Reference frame is positioned as installation.
Claims (11)
1. a kind of ansa shape cutting tooth, including cylindrical body, it is characterised in that: be equipped with increment face, upper end in the upper end of ontology
Crest top land is equipped at portion's outer rim, side wall is equipped with flank, and the increment face includes the transition face of at least two inclined intersections, respectively
Transition face is intersected in the increment face that ontology upper end face composition is in evagination, and two neighboring transition face intersection constitutes a convex ridge,
Wherein the outer end of a convex ridge crosses with crest top land, and the flank includes being respectively set in the two sides of the convex ridge to cross with crest top land
Two inclined wedge surfaces, the upper end of two inclined wedge surfaces extends to increment face, constitutes ansa position with crest top land and corresponding convex ridge, partially
The lower end of wedge surface extends to this body sidewall or ontology bottom surface.
2. ansa shape cutting tooth according to claim 1, it is characterised in that: the ansa position is by two inclined wedge surfaces, ontology
Made of side, convex ridge, transition face, crest top land enclose.
3. ansa shape cutting tooth according to claim 1, it is characterised in that: the transition face is plane, convex globoidal, concave arc
Face, serrated face or wavy surface, each transition face can be symmetrical set or asymmetric setting.
4. ansa shape cutting tooth according to claim 1, it is characterised in that: the transition face is equipped with 2-10, constitutes 1-
10 convex ridges, the height of convex ridge opposing transition surfaces bottom surface are 0~10mm, 0~5mm of rounding at the top of convex ridge.
5. ansa shape cutting tooth according to claim 1 or 2, it is characterised in that: the inclined wedge surface can be plane, convex arc
Face, cancave cambered surface, serrated face or wavy surface, two inclined wedge surfaces can be symmetrical arranged or asymmetric setting.
6. ansa shape cutting tooth according to claim 1 or 2, it is characterised in that: each transition face intersection deviates on ontology
0~5mm of end surfaces center.
7. ansa shape cutting tooth according to claim 1 or 2, it is characterised in that: at least one convex ridge is long in the convex ridge
Degree is greater than or equal to the radius value of the cylindrical body.
8. ansa shape cutting tooth according to claim 1 or 2, it is characterised in that: when convex ridge is three or more, adjacent two
The angle that convex ridge is constituted is greater than or equal to 45 °, and each angle is equal or unequal.
9. ansa shape cutting tooth according to claim 1 or 2, it is characterised in that: convex ridge does not intersect each inclined wedge surface, and two
Inclined wedge surface, which is sloped inwardly by two faces and deflected from ontology two sides, to be extended to upper end and crosses with transition face and crest top land, with institute
It is 0~75 ° that the axis for stating cylindrical body, which is formed by angle,.
10. ansa shape cutting tooth according to claim 1 or 2, it is characterised in that: the width of the crest top land is 2-6mm.
11. ansa shape cutting tooth according to claim 1 or 2, it is characterised in that: ontology includes by matrix and being connected to base
Polycrystalline diamond layer above body, polycrystalline diamond layer with a thickness of 1-6 ㎜, ansa position be located on polycrystalline diamond layer or
On polycrystalline diamond layer and hard alloy substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820792048.4U CN208310700U (en) | 2018-05-25 | 2018-05-25 | A kind of ansa shape cutting tooth |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820792048.4U CN208310700U (en) | 2018-05-25 | 2018-05-25 | A kind of ansa shape cutting tooth |
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| Publication Number | Publication Date |
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| CN208310700U true CN208310700U (en) | 2019-01-01 |
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| CN201820792048.4U Active CN208310700U (en) | 2018-05-25 | 2018-05-25 | A kind of ansa shape cutting tooth |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108487865A (en) * | 2018-05-25 | 2018-09-04 | 中石化江钻石油机械有限公司 | A kind of ansa shape cutting tooth |
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2018
- 2018-05-25 CN CN201820792048.4U patent/CN208310700U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108487865A (en) * | 2018-05-25 | 2018-09-04 | 中石化江钻石油机械有限公司 | A kind of ansa shape cutting tooth |
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Effective date of registration: 20191224 Address after: 100020 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: China Petroleum Chemical Industry Group Co Ltd Address before: 430223, No. 5, Chinese workers' garden, Temple Hill community, East Lake New Technology Development Zone, Wuhan, Hubei Co-patentee before: SINOPEC OILFIELD EQUIPMENT CORPORATION Patentee before: Kingdream Sinopec Petroleum Machinery Co. Ltd. |