CN110374515A - A kind of polycrystalline diamond compact bit and its processing method - Google Patents
A kind of polycrystalline diamond compact bit and its processing method Download PDFInfo
- Publication number
- CN110374515A CN110374515A CN201910599589.4A CN201910599589A CN110374515A CN 110374515 A CN110374515 A CN 110374515A CN 201910599589 A CN201910599589 A CN 201910599589A CN 110374515 A CN110374515 A CN 110374515A
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- Prior art keywords
- wing
- polycrystalline diamond
- diamond compact
- ontology
- compact bit
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- 239000010432 diamond Substances 0.000 title claims abstract description 47
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 47
- 238000003672 processing method Methods 0.000 title claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 11
- 239000010439 graphite Substances 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000003466 welding Methods 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 7
- 238000005488 sandblasting Methods 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000010583 slow cooling Methods 0.000 claims description 4
- 238000003491 array Methods 0.000 claims 1
- 238000009825 accumulation Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 210000004233 talus Anatomy 0.000 abstract description 2
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 32
- 238000005553 drilling Methods 0.000 description 7
- 239000002689 soil Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004575 stone 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond 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
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type 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
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of polycrystalline diamond compact bits, including ontology and several operator wings on the ontology, main chip space is equipped between the operator wing, the front end of the operator wing extends to the interior tapering of the ontology, the center portion of the ontology is equipped with secondary wing, the pair wing is set on the inside of the operator wing and is formed with secondary chip space between the operator wing, it is described pair chip space both ends be connected to respectively with adjacent main chip space, polycrystalline diamond compact bit of the invention being capable of quick chip removal, talus accumulation is prevented, mud drum is prevented.The invention also discloses a kind of polycrystalline diamond compact bit processing methods, for processing polycrystalline diamond compact bit, graphite flake is placed in perforation before idiosome heating, take out graphite flake after idiosome temperature drops back to room temperature, with prevent perforation deform after composite polycrystal-diamond or other teeth can not be installed.
Description
Technical field
The present invention relates to field of oil drilling, especially a kind of polycrystalline diamond compact bit.
Background technique
Existing polycrystalline diamond compact bit, including the ontology being in the form of a column, ontology is equipped with wing and water hole, ontology
Lower surface be divided into center portion, interior tapering, nose from the inside to the outside, the side surface of ontology is divided into shoulder and gauge from bottom to top
Wing is correspondingly divided into heart section, inner cone section, nose section, shoulder section and gauge section, is installed with cutting tooth on wing by portion, adjacent
It is equipped with chip space between wing, water hole is equipped in chip space for spraying the soil walked in chip space.The position of wing nose section it is minimum and
Cloth tooth is most close, and nose section plays main impact and shear action.The height of ontology center portion is higher than the height of body nose section, and center portion exists
Recess is formed on ontology.There is center portion row's clast difficulty in polycrystalline diamond compact bit in the prior art.Due to
The clast of center portion need to flow downward relative to ontology and while around to flowing, to shoulder after invert run up again, and
Due to the blocking of the soil layer below ontology, the clast of center portion is difficult to run down relative to ontology, also, the revolving speed of center portion compared with
It is small, it is also difficult to using centrifugal force by the clast of center portion to transporting in the week of drill bit, to rely primarily on water hole water spray and rush the clast of center portion
It walks, therefore the requirement to hydraulic pressure is high, more demanding to the anti-pressure ability of ontology, water hole water spray is also difficult to ensure that center portion clast is smooth
Discharge.Center portion clast, which cannot be smoothly discharged, will form center portion mud drum, and the cutting tooth of center portion does not have shear action, the clast of core
It is difficult to be crushed, further results in center portion clast and be difficult to be discharged.As polycrystalline diamond compact bit is run down, center portion
Clast is pressed more and more tighter, causes biggish buffer brake to the downlink of polycrystalline diamond compact bit, reduces drilling well effect
Rate.
Patent No. CN201310176720.9, the entitled Chinese patent for surging punching rotation primary-secondary drill disclose a kind of knot
Structure, including two-way circular arc chip space and arc chip space, enter runner conducive to landwaste.The structure of the patent disclosure is conducive to eliminate
Clast whirlpool or dead angle, but for reducing center portion resistance, improve the effect very little of drilling efficiency.Clast and ontology it is opposite
The direction of rotation and down direction of the direction of motion and ontology conversely, because the extending direction and ontology of two-way circular arc chip space rotation
Turn between direction that there are angles, and the angle of the direction of rotation of the two-way circular arc chip space and ontology of half is acute angle, is caused
The side wall mutual extrusion effect of clast and two-way circular arc chip space is stronger, in the case where same coefficient of friction, clast and two-way circle
The frictional force of the side wall of arc chip space is larger, and drill bit center portion resistance is still larger, and drilling efficiency is not high.
Term is explained: idiosome is integrally formed as forged or cast technique, including the isostructural plycrystalline diamond gold of ontology, wing
Hard rock compact bit blank；Perforation is on wing for installing the hole of the toothings such as impact teeth or cutting tooth.
Explain in direction: when polycrystalline diamond compact bit works, rotation center is vertically arranged, and direction of rotation is to arrive in the past
Rear direction, eating soil layer direction is that direction, the direction radiated horizontally outward from rotation center are direction from inside to outside from top to bottom.
Summary of the invention
The technical problem to be solved by the present invention is existing polycrystalline diamond compact bit, center portion chip removal is difficult difficult, holds
The problem of easily forming mud drum, increasing drilling well resistance, reduce drilling efficiency.
The solution that the present invention solves its technical problem is:
A kind of polycrystalline diamond compact bit, including ontology and several operator wings on the ontology, the master
Main chip space is equipped between wing, the front end of the operator wing extends to the interior tapering of the ontology, and the center portion of the ontology is set
There is secondary wing, the pair wing is set on the inside of the operator wing and is formed with secondary chip space, the pair between the operator wing
The both ends of chip space be connected to respectively with adjacent main chip space.
In some embodiments, the quantity of the pair wing is two, and the quantity of the operator wing is 5, two pairs
Main chip space there are two being set between wing.
Further, water hole is additionally provided on the ontology, two secondary wings interlock with the water hole of both direction outwardly
Setting.
Optionally, on the interior tapering of the main body in be equipped with 5 water holes towards shoulder, 5 water hole rings towards shoulder
Shape array.
In some embodiments, the pair wing is equipped with cutting tooth and impact teeth, and the impact teeth is in cubic cylindricality, described
The reclined by angle of impact teeth is identical as the reclined by angle of the cutting tooth, and the impact teeth is alloy material, and the cutting tooth is
Composite polycrystal-diamond.
In some embodiments, the gauge section of the operator wing is equipped with external chip discharging slot, and the front end of the external chip discharging slot is with after
End is connected to adjacent main chip space respectively, and the external chip discharging slot is gradually tilted upward from front end to rear end.
Further, the external chip discharging slot becomes narrow gradually and gradually becomes shallower as from front to back.
Optionally, the quantity of the external chip discharging slot is several, and external chip discharging slot is equipped on the operator wing, described several outer
The height of the starting point of chip space is all the same.
In some embodiments, the gauge of the ontology is equipped with the water hole of direction upward.
A kind of polycrystalline diamond compact bit processing method, for processing a kind of plycrystalline diamond Buddha's warrior attendant described in any of the above embodiments
Stone compact bit, comprising the following steps:
S1, sandblasting is carried out to idiosome surface；
S2, graphite flake is installed on the perforation of idiosome；
S3, it is placed on welding panel after idiosome is heated to 480~520 degree；
S4, surfacing is carried out to the operator wing, secondary blade surface；
S5, idiosome is placed in constant temperature 1 hour in incubator, Slow cooling 4 hours or more；
S6, the graphite flake installed on perforation is removed, the alloy that perforation is flowed into when to surfacing is polished, and is removed on wing
Burr；
S7, sandblasting remove the greasy dirt on bit body surface, remove connector welded seam area and surfacing zone oxidation layer；
S8, welding polycrystalline diamond composite sheet.
The beneficial effects of the present invention are: can quick chip removal, prevent talus accumulation, prevent mud drum.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiments of the present invention, rather than is all implemented
Example, those skilled in the art without creative efforts, can also be obtained according to these attached drawings other designs
Scheme and attached drawing.
Fig. 1 is bottom view of the invention；
Fig. 2 is front view of the invention；
Fig. 3 is the schematic diagram in chip removal path of the invention.
Specific embodiment
A kind of polycrystalline diamond compact bit, it is described including ontology 1 and several operator wings 2 on the ontology 1
Main chip space 11 is equipped between the operator wing 2, the front end of the operator wing 2 extends to the interior tapering of the ontology 1, the ontology 1
Center portion be equipped with secondary wing 3, the pair wing 3 is set on the inside of the operator wing 2 and is formed with pair between the operator wing 2
Chip space 12, it is described pair chip space 12 both ends be connected to respectively with adjacent main chip space 11.
In the structure of the application, since the center portion of ontology 1 is equipped with secondary wing 3, mud drum easy to form on secondary wing 3 is existing
In technology, the front end of the operator wing 2 of part extends to the center portion of ontology 1, this part is operated the front end mud drum easy to form of the wing 2,
And in structure in the prior art, the clast of center portion can only be drained by main chip space 11, due to drain the path of clast compared with
Long, so chip removal is difficult, and secondary wing 3 described herein is set to 2 inside of the operator wing and between the operator wing 2
Be formed with secondary chip space 12, the both ends of the pair chip space 12 be connected to respectively with adjacent main chip space 11, around secondary wing 3
Clast can be discharged in main chip space 11 by secondary chip space 12, secondary chip space 12 is set to the rear side of secondary wing 3, center portion it is broken
As long as considering to be worth doing from center portion and flowing very short a distance into secondary chip space 12, the rotary motion of ontology 1 can be by secondary chip removal
Clast in slot 12 is successfully discharged in the main chip space 11 of nose, and therefore, the structure of the application has quick chip removal, is prevented broken
Bits accumulation, prevents the benefit of mud drum.
In some embodiments, the quantity of the pair wing 3 is two, and the quantity of the operator wing 2 is 5, described in two
Main chip space 11 there are two being set between secondary wing 3.The lower surface of ontology 1 is divided into two parts, a portion by two secondary wings 3
There are two main chip space 11, another part there are three main chip space 11, the outsides of two secondary wings 3 there are two secondary chip space 12,
The center portion of ontology 1 is divided into two regions by two secondary wings 3, and the distance of described two region distances two secondary chip spaces 12 is all
It is close, therefore be easy to drain the clast of center portion.
Further, water hole 4, two secondary wings 3 and the water hole 4 of both direction outwardly are additionally provided on the ontology 1
It is staggered.The water hole 4 of both direction outwardly is set in described two regions of center portion, and described two regions of center portion are this Shens
The region of long-pending clast is easiest in mechanism please, in described two regions of center portion the water hole 4 of setting both direction outwardly, and
Two secondary wings 3 are staggered with the water hole 4 of both direction outwardly, can use described two areas of the water hole 4 by center portion
Clast in domain washes away.
Optionally, on the interior tapering of the main body in be equipped with 5 towards 4,5, the water hole of shoulder towards the water hole of shoulder 4
Annular array.Since the quantity of the operator wing 2 is 5, so the water hole 4 of annular array of the setting 5 towards shoulder, adds
The chip removal rate of strong main chip space 11.
In some embodiments, the pair wing 3 is equipped with cutting tooth 5 and impact teeth 6, and the impact teeth 6 is in cubic cylindricality,
The reclined by angle of the impact teeth 6 is identical as the reclined by angle of the cutting tooth 5, and the impact teeth 6 is alloy material, described to cut
Cutting tooth 5 is composite polycrystal-diamond.
In some embodiments, the gauge section of the operator wing 2 is equipped with external chip discharging slot 13, the front end of the external chip discharging slot 13
It is connected to respectively with adjacent main chip space 11 with rear end, the external chip discharging slot 13 is gradually tilted upward from front end to rear end.It is existing
Main chip space 11 in technology is usually the spiral structure gradually tilted upward from front end to rear end, main 11 chip removal of chip space
During, clast has the tendency that falling downwards under gravity, and vertically span is larger for the shape of main chip space 11,
And lateral upper span very little, the trend that the clast in main chip space 11 is fallen downwards are obvious, and external chip discharging slot 13 is due to being set to master
In the gauge section of wing 2, and the front-end and back-end of external chip discharging slot 13 are connected to adjacent main chip space 11 respectively, so, outside
The shape horizontal span of chip space 13 is the width of main wing 2, and longitudinal span of external chip discharging slot 13 can be designed smaller, to subtract
A possibility that clast of small external chip discharging slot 13 is fallen downwards, to reduce a possibility that clast is fallen downwards on the whole.
Further, the external chip discharging slot 13 becomes narrow gradually and gradually becomes shallower as from front to back.In this way, in external chip discharging slot 13
Clast enters in the main chip space 11 at its rear, can increase the pressure in main chip space 11, well side wall is compressed, and reduces and turns
Speed；Clast in main chip space 11 enters in the external chip discharging slot 13 at its rear, and can reduce the pressure in main chip space 11, benefit
In raising revolving speed.On the one hand the pressure in main chip space 11 can be improved in this structure, be compacted the borehole wall, the ground for being suitble to soil property more loose
Domain, convenient shaft building later, on the other hand the average pressure in main chip space 11 does not increase, and will not reduce drilling efficiency.
Optionally, the quantity of the external chip discharging slot 13 is several, is equipped with external chip discharging slot 13 on the operator wing 2, described
The height of the starting point of several external chip discharging slots 13 is all the same.Due to having downward operation when polycrystalline diamond compact bit work
Speed also has the speed of service of rotation, and the height of the starting point of several external chip discharging slots 13 is all the same, so, any two are outer
The starting point of the track of chip space 13 is different, situation that can be overlapped to avoid the track of different external chip discharging slots 13, avoids pair
The same region on the borehole wall carries out repeating extruding.
In some embodiments, the gauge of the ontology is equipped with the water hole 4 of direction upward.The structure is conducive to wash away guarantor
Clast in diameter portion.
A kind of polycrystalline diamond compact bit processing method, comprising the following steps: sandblasting S1, is carried out to idiosome surface；
S2, graphite flake is installed on the perforation of idiosome；S3, it is placed on welding panel after idiosome is heated to 480~520 degree；S4,
Surfacing is carried out to the operator wing 2, secondary 3 surface of wing；S5, idiosome is placed in constant temperature 1 hour in incubator, Slow cooling 4 hours with
On；S6, the graphite flake installed on perforation is removed, the alloy that perforation is flowed into when to surfacing is polished, and removes the hair on wing
Thorn；S7, sandblasting remove the greasy dirt on bit body surface, remove connector welded seam area and surfacing zone oxidation layer；S8, welding are poly-
Diamond composite sheet.
Sandblasting installs graphite flake on the perforation of idiosome, subsequent with the greasy dirt for removing idiosome surface, stain of becoming rusty and oxide layer
Processing in, the range of temperature of idiosome is very wide, and the deflection of perforation is larger, and not due to the idiosome thickness around perforation
Uniformly, in subsequent temperature change, the deflection at each position of perforation is different, after perforation deformation, polycrystalline diamond
Composite sheet can not be installed in perforation, so graphite flake is put into perforation, to avoid the overall dimensions or local size of perforation
Become too small and composite polycrystal-diamond can not be packed into subsequent handling, the outer diameter of graphite flake can also be designed larger than
The outer diameter of composite polycrystal-diamond, composite polycrystal-diamond can be packed into perforation by being further ensured that in subsequent handling, will
Surfacing is carried out to the operator wing 2, secondary 3 surface of wing after idiosome heating to improve the intensity of the operator wing 2,3 surface of secondary wing and wear-resisting
Property；Idiosome is placed in constant temperature 1 hour in incubator, Slow cooling 4 hours or more steps can dehydrogenation, prevent hydrogen brittleness, improve
The toughness and plasticity and elimination internal stress of welding position；Step S7 can remove surfacing zone oxidation layer；Last welding polycrystalline
Diamond compact, other processing steps is added on the basis of the application and are also belonged at the step of can also adding welding alloy tooth
In the protection scope of the application.
It is the embodiment of the present invention referring to figs. 1 to Fig. 3:
A in Fig. 3 is the sense of rotation of the polycrystalline diamond compact bit of the application, and the arrow of b~g refers to broken
Consider flow direction on the polycrystalline diamond compact bit of the application to be worth doing, the flow path of the clast of center portion include along g to b or
Along g to c, and from d or from e to f, in the case where no secondary chip space 12, the clast of center portion needs to flow from along g to b, or
It is flowed along d, the path along g to b is longer, and there are also the gradient in up and down direction, clast is easy to be trapped at g, and is detained
In the region of the starting point of d, and under the action of the rotation of polycrystalline diamond compact bit, the clast at g is easily accessible the road c
Diameter, and the path c is easily propagated through, it is discharged to reach shoulder, similarly, path e also plays the role of similar quickening chip removal.
In the description of the present invention, direction "front", "rear" is rotation side when being worked with polycrystalline diamond compact bit
To referring to being defined, rotated when rotation from front to back.In the description of the present invention, it is to be understood that, term is " long
The orientation or positional relationship of the instructions such as degree ", "upper", "lower", "top", "bottom" "inner", "outside", " circumferential direction " is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.This
Outside, term " first ", " second ", which are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or imply, refers to
The quantity of bright indicated technical characteristic." first " is defined as a result, the feature of " second " can explicitly or implicitly include
One or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two with
On.In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
In concrete meaning.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of polycrystalline diamond compact bit, including ontology (1) and several operator wings (2) on the ontology (1),
Main chip space (11) are equipped between the operator wing (2), it is characterised in that: the front end of the operator wing (2) extends to described
The interior tapering of body (1), the center portion of the ontology (1) are equipped with secondary wing (3), and the pair wing (3) is set in the operator wing (2)
Side is simultaneously formed with secondary chip space (12) between the operator wing (2), it is described pair chip space (12) both ends with respectively with it is adjacent
Main chip space (11) connection.
2. a kind of polycrystalline diamond compact bit according to claim 1, it is characterised in that: the pair wing (3)
Quantity is two, and the quantity of the operator wing (2) is 5, sets that there are two main chip spaces between two secondary wings (3)
(11)。
3. a kind of polycrystalline diamond compact bit according to claim 2, it is characterised in that: on the ontology (1) also
Equipped with water hole (4), two secondary wings (3) are staggered with the water hole (4) of both direction outwardly.
4. a kind of polycrystalline diamond compact bit according to claim 2, it is characterised in that: the interior tapering of the main body
5 water holes (4) towards shoulder, 5 water hole (4) annular arrays towards shoulder are equipped in upper.
5. a kind of polycrystalline diamond compact bit according to claim 1, it is characterised in that: on the pair wing (3)
Equipped with cutting tooth (5) and impact teeth (6), the impact teeth (6) is in cubic cylindricality, the reclined by angle of the impact teeth (6) and institute
The reclined by angle for stating cutting tooth (5) is identical, and the impact teeth (6) is alloy material, and the cutting tooth (5) is multiple for polycrystalline diamond
Close piece.
6. a kind of polycrystalline diamond compact bit according to claim 1, it is characterised in that: the operator wing (2)
Gauge section be equipped with external chip discharging slot (13), the front-end and back-end of the external chip discharging slot (13) respectively with adjacent main chip space (11)
Connection, the external chip discharging slot (13) gradually tilt upward from front end to rear end.
7. a kind of polycrystalline diamond compact bit according to claim 6, it is characterised in that: the external chip discharging slot (13)
It becomes narrow gradually and gradually becomes shallower as from front to back.
8. a kind of polycrystalline diamond compact bit according to claim 6, it is characterised in that: the external chip discharging slot (13)
Quantity be it is several, be equipped with external chip discharging slot (13) on the operator wing (2), the starting point of several external chip discharging slots (13)
It is highly all the same.
9. a kind of polycrystalline diamond compact bit according to claim 1, it is characterised in that: the gauge of the ontology
It is equipped with the water hole (4) of direction upward.
10. a kind of polycrystalline diamond compact bit processing method, for processing as claimed in any one of claims 1-9 wherein
A kind of polycrystalline diamond compact bit, which comprises the following steps:
S1, sandblasting is carried out to idiosome surface；
S2, graphite flake is installed on the perforation of idiosome；
S3, it is placed on welding panel after idiosome is heated to 480~520 degree；
S4, surfacing is carried out to the operator wing (2), secondary wing (3) surface；
S5, idiosome is placed in constant temperature 1 hour in incubator, Slow cooling 4 hours or more；
S6, the graphite flake installed on perforation is removed, the alloy that perforation is flowed into when to surfacing is polished, and removes the hair on wing
Thorn；
S7, sandblasting remove the greasy dirt on bit body surface, remove connector welded seam area and surfacing zone oxidation layer；
S8, welding polycrystalline diamond composite sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910599589.4A CN110374515A (en) | 2019-07-04 | 2019-07-04 | A kind of polycrystalline diamond compact bit and its processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910599589.4A CN110374515A (en) | 2019-07-04 | 2019-07-04 | A kind of polycrystalline diamond compact bit and its processing method |
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| Publication Number | Publication Date |
|---|---|
| CN110374515A true CN110374515A (en) | 2019-10-25 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910599589.4A Pending CN110374515A (en) | 2019-07-04 | 2019-07-04 | A kind of polycrystalline diamond compact bit and its processing method |
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| CN (1) | CN110374515A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112459725A (en) * | 2020-12-23 | 2021-03-09 | 西南石油大学 | PDC drill bit for geothermal well |
| US20210180408A1 (en) * | 2019-12-17 | 2021-06-17 | Ulterra Drilling Technologies, L.P. | Drill bit with auxiliary channel openings |
| CN116427855A (en) * | 2023-02-01 | 2023-07-14 | 西南石油大学 | PDC drill bit capable of preventing annular cutting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20210180408A1 (en) * | 2019-12-17 | 2021-06-17 | Ulterra Drilling Technologies, L.P. | Drill bit with auxiliary channel openings |
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| CN116427855A (en) * | 2023-02-01 | 2023-07-14 | 西南石油大学 | PDC drill bit capable of preventing annular cutting |
| CN116427855B (en) * | 2023-02-01 | 2023-08-29 | 西南石油大学 | PDC drill bit capable of preventing annular cutting |
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Application publication date: 20191025 |
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