CN105927157B - Cutting tooth and the PDC drill bit with it - Google Patents
Cutting tooth and the PDC drill bit with it Download PDFInfo
- Publication number
- CN105927157B CN105927157B CN201610411220.2A CN201610411220A CN105927157B CN 105927157 B CN105927157 B CN 105927157B CN 201610411220 A CN201610411220 A CN 201610411220A CN 105927157 B CN105927157 B CN 105927157B
- Authority
- CN
- China
- Prior art keywords
- shovel
- cutting tooth
- face
- drill bit
- cutting
- 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.)
- Active
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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- 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
- E21B10/60—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
Abstract
The present invention discloses a kind of cutting tooth and the PDC drill bit with it, wherein, the cutting tooth includes the matrix of column structure, and the end of described matrix, which is formed with, to be shoveled into portion, and described shovel includes into portion：The first side extended along the wall of described matrix；The shovel face of the top surface of described matrix is formed at, tilts and extends to the wall of the described matrix relative with the main edge of shovel from the main edge of shovel；It is formed at the main edge of shovel of the shovel face；Wherein described shovel face has shovel top and shovel bottom, and the distance of the bottom surface of the shovel apex distance described matrix is shovel heights of roofs, and the distance of the bottom surface of the shovel bottom away from described matrix is shovel bottom height, and the shovel heights of roofs is more than shovel bottom height.The area that the cutting tooth that the present invention is provided is contacted with rock stratum is very small, and cutting pressure is very big, it is easy to penetrate rock stratum and rock stratum is split, and speed is fast, and efficiency high improves the service life of cutting tooth.
Description
Technical field
The present invention relates to a kind of petroleum drilling technology, in particular to a kind of cutting tooth.The invention further relates to one kind
PDC drill bit.
Background technology
The PDC drill bit of traditional oil drilling, its cutting tooth is usually cylinder contrate, the vertical tooth of cylinder and pointed tooth, although
The cutting tooth of above-mentioned form played an important role in the historical floods of oil drilling, however, the cutting tooth of above-mentioned form
Remain deficiency.It is specific as follows：
1. cylinder contrate：The contact area of cylinder contrate and rock is larger, and cutting resistance is big, is difficult to cut stratum, therefore
Easily collapse broken composite sheet；2. this is removed, cylinder contrate quick abrasion, stock-removing efficiency is low, and with the abrasion of composite sheet, cutting face is rapidly by standing
Body fillet gradually becomes the straight angle, and the area of bit cutting gradually increases, cutting pressure reduction, the amount of feeding is constantly reduced, drill bit
Arc top is tapered into, and drill bit is lost cutting power quickly；3. cylinder stand tooth diamond layer thickness it is relatively low, service life compared with
Short, cutting effect is poor.
The content of the invention
A series of concept of reduced forms is introduced in Summary, this will enter in embodiment part
One step is described in detail.The key that present invention part is not meant to attempt to limit technical scheme claimed is special
Seek peace essential features, the protection domain for attempting to determine technical scheme claimed is not meant that more.
A primary object of the present invention is to overcome at least one defect of above-mentioned prior art to be cut there is provided one kind
Tooth, to improve the service life of cutting tooth.
Another main purpose of the present invention is to overcome at least one defect of above-mentioned prior art, and there is provided a kind of PDC
Drill bit, to improve the service life of PDC drill bit by improving the service life of cutting tooth.
For achieving the above object, the present invention is adopted the following technical scheme that：
According to an aspect of the invention, there is provided a kind of cutting tooth includes the matrix of column structure, described matrix
End be formed with and shovel into portion, described shovel includes into portion：First side, wall extension of the first side along described matrix；
The main edge of shovel, the main edge of shovel is a part for the first side；Shovel face, the shovel face from the main edge of shovel to the main shovel
The wall of the relative described matrix of sword tilts extension, wherein the shovel face has shovel top and shovel bottom, the shovel apex distance described matrix
The distance of bottom surface be shovel heights of roofs, the distance of the bottom surface of the shovel bottom away from described matrix is shovel bottom height, the shovel heights of roofs
More than shovel bottom height.
According to an embodiment of the present invention, wherein the cutting tooth includes the matrix of column structure, the end of described matrix
Portion, which is formed with, to be shoveled into portion, and described shovel includes into portion；First side, wall extension of the first side along described matrix；Shovel face,
The shovel face tilts extension from the wall of the described matrix relative with the first side to the first side, with close to institute
State and a tip with seamed edge is formed at first side, the seamed edge is the main edge of shovel, wherein the shovel face has shovel top and shoveled
Bottom, the distance of the bottom surface of the shovel apex distance described matrix is shovel heights of roofs, and the distance of the bottom surface of the shovel bottom away from described matrix is
Bottom height is shoveled, the shovel heights of roofs is more than shovel bottom height.
According to an embodiment of the present invention, wherein the shovel face is curved surface or is made up of the interconnection of multiple planes.
According to an embodiment of the present invention, wherein described shovel also includes into portion：Second side, the second side and institute
The bottom surface for stating matrix is in the first angle；The bottom surface of 3rd side, the 3rd side and described matrix is in the second angle；Described
Two side faces and the spaced setting in the 3rd side and it is located at the shovel face both sides respectively, the shovel face is arranged at described second
Between side and the 3rd side.
According to an embodiment of the present invention, wherein the scope of the shovel heights of roofs H2 is 5mm≤H2≤20mm, the shovel
Bottom height H1 scope is 3mm≤H1≤18mm.
According to an embodiment of the present invention, wherein being provided with glomerocryst layer on the outer surface for shoveling portion.
According to another aspect of the present invention, the present invention also provides a kind of PDC drill bit, and the PDC drill bit includes：Drill bit sheet
Body；Cutting tooth, the cutting tooth is arranged on the drill body；Wherein, the cutting tooth includes：Main cutting tooth, the master
The cutting tooth that cutting tooth provides for the present invention, the main cutting tooth is arranged at the top surface of the bizet of the drill body；Gauge teeth,
The gauge teeth is arranged at the outer peripheral face of the bizet of the drill body.
According to an embodiment of the present invention, wherein the PDC drill bit also includes cutting wing, the cutting wing is from institute
The outer peripheral face for stating top surface to the bizet of the drill body of the bizet of drill body extends, the main cutting tooth and the gauge
Tooth is respectively arranged on the cutting wing.
According to an embodiment of the present invention, wherein the main cutting tooth has side drift angle or negative on the cutting wing
Anterior angle, wherein the side drift angle is γ, the negative rake is β, and the scope of the side drift angle and the negative rake is：0 ° of ＜ γ≤
20 °, 0 ° of ＜ β≤20 °.
According to an embodiment of the present invention, wherein the PDC drill bit also includes tank, the tank is arranged at adjacent
Between the cutting wing, nozzle is provided with the tank, the nozzle is connected with water source.
According to an embodiment of the present invention, wherein the bite wing includes：First straight line section, the first straight line section
From the close center of the bizet to edge diagonally upper direction extension, the first straight line section has tail end, the tail
End is close to the edge；Second straight line section, the second straight line section is from the top surface of the bizet to the bottom of the bizet
Extension, the centerline axis parallel of the second straight line section and described matrix, the second straight line section has head end, and the head end is leaned on
The nearly top surface；Arc section, the arc section is arranged at the tail end and second straight line section of first straight line section
Between the head end, the arc section is outstanding, wherein the angle of first straight line section and the bottom surface of described matrix be 0 °-
45°。
According to an embodiment of the present invention, wherein the PDC drill bit also includes protection tooth, the protection tooth is arranged at institute
State between main cutting tooth and the gauge teeth.
According to an embodiment of the present invention, wherein the gauge teeth is semi-cylindrical structure or semicircular planform structure.
As shown from the above technical solution, cutting tooth of the invention and the advantage and good effect of PDC drill bit are：The present invention
The area that the cutting tooth of offer is contacted with rock stratum is very small, and cutting pressure is very big, it is easy to penetrate rock stratum and rock stratum is split,
Speed is fast, efficiency high, after abrasion, is remaining to keep have less connect between the main edge of shovel and rock stratum because this shovels portion
Contacting surface is accumulated, so as to improve the service life of cutting tooth, efficiently against or avoid shortcoming present in above-mentioned prior art or
It is not enough.
Further, by using above-mentioned cutting tooth, the PDC drill bit with above-mentioned cutting tooth is extended and use the longevity
Life.
Brief description of the drawings
By being considered in conjunction with the accompanying following the following detailed description of the embodiment of the present invention, various targets of the invention,
Feature and advantage will become apparent.Accompanying drawing is only the exemplary diagram of the present invention, is not necessarily drawn to scale.
In the accompanying drawings, same reference represents same or similar part all the time.Wherein：
Fig. 1 is a kind of front view of cutting tooth according to an illustrative embodiments.
Fig. 2 is a kind of left view of cutting tooth according to an illustrative embodiments.
Fig. 3 is a kind of right view of cutting tooth according to an illustrative embodiments.
Fig. 4 is a kind of front view of PDC drill bit according to an illustrative embodiments.
Fig. 5 is a kind of top view of PDC drill bit according to an illustrative embodiments.
Fig. 6 is a kind of profile of PDC drill bit according to an illustrative embodiments.
Fig. 7 is a kind of side drift angle of the cutting tooth of PDC drill bit according to an illustrative embodiments.
Fig. 8 is a kind of negative rake of the cutting tooth of PDC drill bit according to an illustrative embodiments.
Fig. 9 is a kind of working state schematic representation of cutting tooth according to an illustrative embodiments.
Figure 10 is the longitudinal sectional drawing of the cutting tooth in Fig. 9.
Figure 11 is the working state schematic representation of cutting tooth of the prior art.
Wherein, description of reference numerals is as follows：
1st, drill body；2nd, main cutting tooth；3rd, tooth is protected；
4th, gauge teeth；5th, wing is cut；6th, nozzle；
7th, the main edge of shovel；8th, shovel face；9th, first side；
10th, second side；11st, the 3rd side；21st, matrix；
γ, side drift angle；β, negative rake；Angle；
H1, shovel bottom height；H2, shovel heights of roofs；
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment those skilled in the art is comprehensively conveyed to.Identical accompanying drawing in figure
Mark represents same or similar structure, thus will omit their detailed description.
Fig. 1 is a kind of front view of cutting tooth according to an illustrative embodiments.Fig. 2 is according to an exemplary reality
Apply a kind of left view of cutting tooth shown in mode.Fig. 3 is a kind of right side of cutting tooth according to an illustrative embodiments
View.
Referring to figs. 1 to Fig. 3, according to an aspect of the invention, there is provided a kind of cutting tooth, the cutting tooth includes cylinder knot
The matrix 21 of structure, it is to be understood that the structure of matrix 21 can be Elliptic Cylinder, square cylinder or other people in the art
Member it is conceivable that post body structure it is all within the scope of the present invention, the tubular matrix 21 that provides of the present invention, such as
Shown in Fig. 3, the diameter of the matrix 21 may be selected to be 10mm to 25mm.
The end of matrix 21, which is formed with, to be shoveled into portion, in order to improve the hardness of cutting tooth, is shoveled on the outer surface in portion and is provided with
Glomerocryst layer, shovel includes into portion：The first side 9 extended along the wall of matrix 21；The main edge of shovel is formed with the top of first side 9
7, the main edge of shovel 7 is a part for first side 9；Extension shape is tilted from the main edge of shovel 7 to the wall of the matrix 21 relative with the main edge of shovel 7
Into there is shovel face 8, wherein shovel face 8 has shovel top and shovel bottom, and the position where the main edge of shovel 7 is pushed up for shovel, the bottom of shovel apex distance matrix 21
The distance in face is shovel heights of roofs H2, and with the main edge of shovel 7 in the wall of the matrix 21 of 180 degree angle to shovel bottom, shovel bottom is away from matrix 21
The distance of bottom surface is shovel bottom height H1, and shovel heights of roofs H2 is more than shovel bottom height H1.
First side defined in this specification, is considered as the one side upwardly extended from the side of matrix 21, the first side
Face is the surface of correspondence matrix 21, for use in the main edge of shovel 7 and inclined shovel face 8 is formed, so as to form an inclination
Enter portion to the shovel of side, described shovel into portion can be wedge structure.It is wedge structure because this is shoveled into portion, by abrasion
Afterwards, this is shoveled remains to keep the main edge of shovel 7 and rock stratum to have less contact area into portion, so as to extend the use longevity of cutting tooth
Life.
Fig. 9 is a kind of working state schematic representation of cutting tooth according to an illustrative embodiments.During Figure 10 is Fig. 9
Cutting tooth longitudinal sectional drawing.Figure 11 is the working state schematic representation of cutting tooth of the prior art.
Shovel face 8 to be formed from the main edge of shovel 7 to extending with the main edge of shovel 7 in the wall of the matrix 21 of the angle of 180 degree, Ke Yili
Solution, the top surface or shovel that shovel face 8 is formed as shoveling into portion enters a part for the top surface in portion.When using the cutting tooth, the main edge of shovel 7
It is inserted into rock stratum, the fragment that the parcel cutting of shovel face 8 is formed, therefore the cutting way of the cutting tooth is referred to as shovelling cutting, such as
Shown in Fig. 9 and Figure 10.It is understood that the main edge of shovel 7 can be the part on the top of first side 9, the main edge of shovel 7 and rock
The contact area of layer is small, in the case of the rock stratum of cutting condition of equivalent thickness, cutting pressure can be kept constant or with very little
Change.Further, since the main edge of shovel 7 and the contact area of rock stratum are small, the main edge of shovel 7 is set easily to shovel into rock stratum and split rock stratum
Open, improve cutting speed.
Referring to figs. 1 to Fig. 3, according to an aspect of the invention, there is provided a kind of cutting tooth, wherein cutting tooth include cylinder
The matrix 21 of structure, it is to be understood that the structure of matrix 21 can be Elliptic Cylinder, square cylinder or those skilled in the art
It is conceivable that other shapes post body structure it is all within the scope of the present invention, the tubular base that provides of the present invention
Body 21, as shown in Figure 3.The end of matrix 21, which is formed with, to be shoveled into portion, and shovel includes into portion：The first side extended along the wall of matrix 21
Face 9；Extension is tilted from the wall of the matrix 21 relative with first side 9 to first side 9 and is formed with shovel face 8, with close to the
A tip with seamed edge is formed at one side 9, seamed edge is the main edge of shovel 7, as shown in Fig. 2 wherein shovel face 8 has shovel top and shoveled
Bottom, the position where the main edge of shovel 7 is pushed up for shovel, and the distance of the bottom surface of shovel apex distance matrix 21 is shovel heights of roofs H2, is in the main edge of shovel 7
The wall of the matrix 21 of 180 degree angle is shovel bottom, and the distance of shovel bottom surface of the bottom away from matrix 21 is shovel bottom height H1, shovel heights of roofs H2
More than shovel bottom height H1.
It is understood that the cutting tooth in present embodiment is similar with the structure of the cutting tooth in such scheme, only not
Same to be, the main edge of shovel 7 is formed in the non-edge position of top surface.Shovel face 8 is from the main edge of shovel 7 to the angle for the main edge of shovel 7 being in 180 degree
The wall of matrix 21 extend to be formed, it is to be understood that the top surface or shovel that shovel face 8 is formed as shoveling into portion enter the one of the top surface in portion
Part.It can also be appreciated that the main edge of shovel 7 can be the part on the top of first side 9, the main edge of shovel 7 and rock stratum
Contact area is small, in the case of the rock stratum of cutting condition of equivalent thickness, cutting pressure can be kept constant or change with very little
Change.Further, since the main edge of shovel 7 and the contact area of rock stratum are small, the main edge of shovel 7 is easily shoveled into rock stratum and rock stratum is split, carry
High cutting speed.
It is understood that shovel face 8 can be arbitrary structures, such as, but not limited to shovel face 8 can be to the inside of matrix 21
The concave surface of depression or to prominent convex surface outside matrix 21.With continued reference to Fig. 1 to Fig. 3, as one embodiment of the present invention, its
Middle shovel face 8 is curved surface or is made up of the interconnection of multiple planes.The shovel face 8 that one embodiment of the present invention is provided is to evagination
The convex surface gone out, the convex surface can have multiple planes with different inclination slopes to connect to be formed, and claim to be had by multiple in the present invention
The plane that difference tilts slope connects the face to be formed for multistage face, as shown in Figure 3 so that the main edge of shovel 7 is to shovel the top into portion.Can
With understanding, shovel face 8 can be outstanding curved surface, or the curved surface caved inward, or cave inward
Multistage face, can also be outstanding multistage face.Cutting tooth can have multiple structural forms, such as, but not limited to cutting tooth
Can be the vertical toothing of cone.
With continued reference to Fig. 1 to Fig. 3, as one embodiment of the present invention, wherein shovel also includes the He of second side 10 into portion
The bottom surface of 3rd side 11, second side 10 and matrix 21 is in the first angle；3rd side 11 and the bottom surface of matrix 21 are in second
Angle；The spaced setting in the side of second side 10 and the 3rd 11 and the both sides for being located at shovel face 8 respectively, as shown in Figure 1.Second side
The side of face 10 and the 3rd 11 extends to be formed from the non-edge position of shovel face 8 to the wall of matrix 21, such as, but not limited to, the second side
The side of face 10 and the 3rd 11 is respectively the plane that extension is tilted down from shovel face 8, so that between shovel face 8 and second side 10
Junction is respectively formed with minor cutting edge between junction and the side of shovel face 8 and the 3rd 11.It is understood that the first angle
Can be respectively acute angle with the second angle.When cutting tooth works, two minor cutting edges also participate in cutting, so as to accelerate cutting
Speed.
During using the cutting tooth, the main edge of shovel 7 is contacted with rock stratum, with continuous abrasion, and shovel heights of roofs H2 is becoming
Small, the position of the main edge of shovel 7 is then moved along shovel face 8 to shovel bottom.Because the both sides of shovel face 8 have the side of second side 10 and the 3rd
11, therefore the length of the main edge of shovel 7 can keep identical with original state, or length change very little.So as to keep main shovel
Sword 7 has less contact area with rock stratum, and drilling pressure can keep constant in whole working angles, and cutting tooth has
There is higher cutting speed, extend the service life of cutting tooth.
Reference picture 2, as one embodiment of the present invention, wherein shovel heights of roofs H2 scope is 5mm≤H2≤20mm, shovel
The scope of bottom height is 3mm≤H1≤18mm.
Fig. 4 is a kind of front view of PDC drill bit according to an illustrative embodiments.Fig. 5 is exemplary according to one
A kind of top view of PDC drill bit shown in embodiment.Fig. 6 is a kind of PDC drill bit according to an illustrative embodiments
Profile.Fig. 7 is a kind of side drift angle of the cutting tooth of PDC drill bit according to an illustrative embodiments.Fig. 8 is basis
A kind of negative rake of the cutting tooth of PDC drill bit shown in one illustrative embodiments.
Reference picture 4 is to Fig. 8, and as another aspect of the present invention, the present invention provides a kind of PDC drill bit, the PDC drill bit bag
Include：Drill body 1, drill body 1 can be those skilled in the art it is conceivable that any materials constitute, such as, but not limited to
Drill body 1 is constituted for steel body.The drill body 1 can be those skilled in the art it is conceivable that structure type, for example but
Cylindrical structure is not limited to, as shown in Figure 4 and Figure 5, the nominal diameter of the drill body 1 is 127mm to 431.8mm, or
It can be 5 inches to 17 inches.The PDC drill bit that the present invention is provided also includes the cutting tooth being arranged on drill body 1.Wherein,
Cutting tooth includes：It is arranged at the main cutting tooth 2 of the top surface of the bizet of drill body 1, the cutting that main cutting tooth 2 provides for the present invention
Tooth；Be arranged at the gauge teeth 4 on the outer peripheral face of the bizet of drill body 1, the gauge teeth 4 be used for protect the outer peripheral face of bizet to prevent
Only come in contact and worn and torn with rock stratum.Gauge teeth 4 can have those skilled in the art it is conceivable that structure type, for example
But it is not limited to semi-cylindrical structure or semicircular planform structure.
With continued reference to Fig. 4 to Fig. 6, as one embodiment of the present invention, wherein PDC drill bit also includes cutting wing 5, cut
The outer peripheral face of the sharpener wing 5 from top surface to the bizet of drill body 1 of the bizet of drill body 1 extends, main cutting tooth 2 and gauge teeth
4 are respectively arranged on cutting wing 5.Cutting wing 5 can have in 3 to 8, the embodiment that the present invention is provided with 5
Wing 5 is cut, as shown in Figure 5.The quantity of main cutting tooth 2 on each cutting wing 5 can be configured as needed, for example
But being not limited to can be at least provided with 3 main cutting tooth 2 on each cutting wing 5.
The setting direction of main cutting tooth 2 and cutting direction and the cutting angle of PDC drill bit that angle and PDC drill bit are set
Relevant, reference picture 7 and Fig. 8 are spent, as one embodiment of the present invention, wherein main cutting tooth 2 has lateral deviation on cutting wing 5
Angle γ or negative rake β, side drift angle γ or negative rake β scope is：0 ° of ＜ γ≤20 °, 0 ° of ＜ β≤20 °.It is understood that
One embodiment that the present invention is provided is that the bottom surface of the matrix 21 of main cutting tooth 2 is arranged in drill body 1, as shown in Figure 5.
Amount of heat can be produced during PDC drill bit works, in order to avoid life-span of the amount of heat to PDC drill bit
Impact, as one embodiment of the present invention, wherein PDC drill bit also includes tank, and tank can be arranged at adjacent cut
Between the sharpener wing 5, nozzle 6 can also be provided with the sink, and nozzle 6 is connected with water source.It is understood that nozzle 6 can be with
Connected by conduit with water source, water cavity can also be set in the matrix 21 of the PDC drill bit, shown in reference picture 4, nozzle 6 is with being somebody's turn to do
Water cavity is connected.The quantity of nozzle 6 can be relevant with the working environment of PDC drill bit and the rotary speed of PDC drill bit, can basis
Need arbitrarily selected, such as, but not limited to nozzle 6 can have 4 to 18.
Reference picture 4 and Fig. 6, as one embodiment of the present invention, wherein cutting wing 5 includes：From bizet in
The angular range of the first straight line section of direction extension, first straight line section and the bottom surface of matrix 21 is diagonally gone up to edge in heart position
For 0 ° to 45 °, first straight line section has the tail end close to edge；The second straight line extended from the top surface of bizet to the bottom of bizet
Section, you can with understanding, second straight line section is extended downwardly from the top surface of bizet, second straight line section and the central axis of matrix 21
Parallel, second straight line section has head end, and head end is close to top surface；It is arranged at the tail end of first straight line section and the head end of second straight line section
Between arc section, arc section is outstanding.The radius of arc section can be the arbitrary dimension needed, such as, but not limited to radius
For 0mm to the arbitrary value between 90mm.
With continued reference to Fig. 4 and Fig. 6, as one embodiment of the present invention, wherein PDC drill bit also includes protection tooth 3, protection
Tooth 3 is arranged between main cutting tooth 2 and gauge teeth 4.In the embodiment that the present invention is provided, protection tooth 3 is disposed in proximity to
The lower section of the main cutting tooth 2 of gauge teeth 4, the protection tooth 3 can be cylinder contrate.Protect tooth 3 can be on each cutting wing 5
Quantity can be 0 to 1.
The present invention PDC drill bit, using side drift angle γ or negative rake β scope as：0 ° of ＜ γ≤20 °, 0 ° of ＜ β≤20 °
Mode is set, so that the rock stratum being cut is by larger local pressure, carg is larger, so that more conducively current are clear
Wash.In addition, the volume of the volume ratio plane teeth of the prior art of the glomerocryst layer for the PDC drill bit that the present invention is provided expands one times
More than, so that the shearing force that anti-transverse vibration and convolution are rotated is greatly improved, therefore extend drilling life of bit.Due to this
The main cutting tooth 2 and the contact area of rock stratum for inventing the PDC drill bit provided are smaller, have same drilling pressure in PDC drill bit
In the case of, cutting pressure is larger, so as to cut harder stratum, also just expands the use scope of PDC drill bit.
Feature, structure or characteristic described in the invention can be combined in any suitable manner to be implemented one or more
In mode.Embodiments of the present invention are fully understood so as to provide there is provided many details in the following description.So
And, it will be appreciated by persons skilled in the art that technical scheme can be put into practice without one in the specific detail
Or more, or can be using other methods, component, material etc..In other cases, it is not shown in detail or describes known knot
Structure, material operate to avoid fuzzy each aspect of the present invention.
Claims (12)
1. a kind of cutting tooth, it is characterised in that the cutting tooth includes the matrix (21) of column structure, the end of described matrix (21)
Portion, which is formed with, to be shoveled into portion, and described shovel includes into portion：
First side (9), wall extension of the first side (9) along described matrix (21)；
The main edge of shovel (7), the main edge of shovel (7) is a part for the first side (9)；
Shovel face (8), the shovel face (8) is from the main edge of shovel (7) to the wall of the described matrix (21) relative with the main edge of shovel (7)
Face tilts extension,
Wherein described shovel face (8) has shovel top and shovel bottom, and the distance of the bottom surface of the shovel apex distance described matrix (21) is risen for shovel
Spend (H2), the distance of bottom surface of the shovel bottom away from described matrix (21) is shovel bottom height (H1), and the shovel heights of roofs (H2) is more than
The shovel bottom height (H1)；
Described shovel also includes into portion：
The bottom surface of second side (10), the second side (10) and described matrix (21) is in the first angle；
3rd side (11), the 3rd side (11) and the bottom surface of described matrix (21) are in the second angle；
The second side (10) and it is described 3rd side (11) it is spaced setting and respectively be located at the shovel face (8) both sides.
2. a kind of cutting tooth, it is characterised in that the cutting tooth includes the matrix (21) of column structure, the end of described matrix (21)
Portion, which is formed with, to be shoveled into portion, and described shovel includes into portion；
First side (9), wall extension of the first side (9) along described matrix (21)；
Shovel face (8), the shovel face (8) is from the wall of the described matrix (21) relative with the first side (9) to described first
(9) tilt extension sideways, to form a tip with seamed edge close to the first side (9) place, based on the seamed edge
The edge of shovel (7),
Wherein described shovel face (8) has shovel top and shovel bottom, and the distance of the bottom surface of the shovel apex distance described matrix (21) is risen for shovel
Spend (H2), the distance of bottom surface of the shovel bottom away from described matrix (21) is shovel bottom height (H1), and the shovel heights of roofs (H2) is more than
The shovel bottom height (H1)；
Described shovel also includes into portion：
The bottom surface of second side (10), the second side (10) and described matrix (21) is in the first angle；
3rd side (11), the 3rd side (11) and the bottom surface of described matrix (21) are in the second angle；
The second side (10) and it is described 3rd side (11) it is spaced setting and respectively be located at the shovel face (8) both sides,
The company of junction and the shovel face (8) and the 3rd side (11) between the shovel face (8) and the second side (10)
The place of connecing is respectively formed with minor cutting edge.
3. cutting tooth as claimed in claim 1 or 2, it is characterised in that the shovel face (8) is curved surface or mutual by multiple planes
Connection composition.
4. cutting tooth as claimed in claim 1 or 2, it is characterised in that the scope of the shovel heights of roofs (H2) be 5mm≤H2≤
20mm, the scope of the shovel bottom height (H1) is 3mm≤H1≤18mm.
5. cutting tooth as claimed in claim 1 or 2, it is characterised in that glomerocryst layer is provided with the outer surface for shoveling portion.
6. a kind of PDC drill bit, it is characterised in that the PDC drill bit includes：
Drill body (1)；
Cutting tooth, the cutting tooth is arranged on the drill body (1)；
Wherein, the cutting tooth includes：
Main cutting tooth (2), the main cutting tooth (2) is the cutting tooth as any one of claim 1 to 5, and the master cuts
Cut the top surface that tooth (2) is arranged at the bizet of the drill body (1)；
Gauge teeth (4), the gauge teeth (4) is arranged at the outer peripheral face of the bizet of the drill body (1).
7. PDC drill bit as claimed in claim 6, it is characterised in that the PDC drill bit also includes cutting wing (5), described to cut
The outer peripheral face of the sharpener wing (5) from top surface to the bizet of the drill body (1) of the bizet of the drill body (1) extends, institute
State main cutting tooth (2) and the gauge teeth (4) is respectively arranged on the cutting wing (5).
8. PDC drill bit as claimed in claim 7, it is characterised in that the main cutting tooth (2) is on the cutting wing (5)
With side drift angle or negative rake, wherein the side drift angle is γ, the negative rake is β, the side drift angle and the negative rake
Scope is：0 ° of ＜ γ≤20 °, 0 ° of ＜ β≤20 °.
9. PDC drill bit as claimed in claim 7, it is characterised in that the PDC drill bit also includes tank, the tank is set
Between the adjacent cutting wing (5), nozzle (6) is provided with the tank, the nozzle (6) connects with water source.
10. PDC drill bit as claimed in claim 7, it is characterised in that the cutting wing (5) includes：
First straight line section, from the close center of the bizet to edge, diagonally upper direction extends the first straight line section,
The first straight line section has tail end, and the tail end is close to the edge；
Second straight line section, second straight line section extends from the top surface of the bizet to the bottom surface of the bizet, and described the
Two straightways and the centerline axis parallel of described matrix (21), the second straight line section have head end, and the head end is close to described
Top surface；
Arc section, the arc section is arranged at the tail end of the first straight line section and the head end of second straight line section
Between, the arc section is outstanding, the first straight line section and the angle of the bottom surface of described matrix (21)For 0 ° -45 °.
11. the PDC drill bit as any one of claim 6 to 10, it is characterised in that the PDC drill bit also includes protection
Tooth (3), the protection tooth (3) is arranged between the main cutting tooth (2) and the gauge teeth (4).
12. the PDC drill bit as any one of claim 6 to 10, it is characterised in that the gauge teeth (4) is semicolumn
Face structure or semicircular planform structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610411220.2A CN105927157B (en) | 2016-06-08 | 2016-06-08 | Cutting tooth and the PDC drill bit with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610411220.2A CN105927157B (en) | 2016-06-08 | 2016-06-08 | Cutting tooth and the PDC drill bit with it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105927157A CN105927157A (en) | 2016-09-07 |
| CN105927157B true CN105927157B (en) | 2017-10-20 |
Family
ID=56833884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610411220.2A Active CN105927157B (en) | 2016-06-08 | 2016-06-08 | Cutting tooth and the PDC drill bit with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105927157B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763774A (en) * | 2019-03-21 | 2019-05-17 | 莱州市原野科技有限公司 | PDC drill bit and its cutting tooth |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2449561B (en) * | 2007-05-23 | 2009-07-08 | Smith International | Fixed cutter bit partial blade connection at bit center |
| CN104196458A (en) * | 2014-08-26 | 2014-12-10 | 莱州市原野科技有限公司 | Sharp-tooth PDC drill bit |
| CN204782782U (en) * | 2015-06-12 | 2015-11-18 | 江汉石油钻头股份有限公司 | Circle, mixed tooth PDC drill bit of wedge |
-
2016
- 2016-06-08 CN CN201610411220.2A patent/CN105927157B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763774A (en) * | 2019-03-21 | 2019-05-17 | 莱州市原野科技有限公司 | PDC drill bit and its cutting tooth |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105927157A (en) | 2016-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2628359C2 (en) | Cutting structures for a drill bit with fixed cutting tools | |
| US3388757A (en) | Hardened inserts for drill bits | |
| US5421424A (en) | Bowed out chisel insert for rock bits | |
| CA2143350C (en) | Conical inserts for rolling cone rock bits | |
| WO2019128956A1 (en) | Diamond composite plate and drill bit | |
| US8360175B2 (en) | Convex crested insert with deflected wedge surfaces | |
| AU642075B2 (en) | Rotary drill bit insert | |
| ITTO970734A1 (en) | DRILLING DRILL WITH INTERNAL ROW ELEMENTS FOR FRACTURING CUTTING. | |
| EP0527506A2 (en) | Tungsten carbide inserts for rock bits | |
| AU2014201702B2 (en) | Rotary drill bit with cutting insert for engaging earth strata | |
| NO343649B1 (en) | Cutting element for inclusion on a well tool as well as a well cutting tool for use in a well | |
| US20190234150A1 (en) | Hartmetalleinsatz und Gesteinsbohrer | |
| CN102691476A (en) | Cutting insert for roof drill bit | |
| JP6842144B1 (en) | Drilling bit and ground drilling method | |
| CN108625427A (en) | Scraper bowl for the implement system with symmetrical bucket tooth installation component | |
| CN105927157B (en) | Cutting tooth and the PDC drill bit with it | |
| JP4653811B2 (en) | Drill tool with cutting element formed as plate or head | |
| US10501997B2 (en) | Drill bit with recessed cutting face | |
| CN1241237A (en) | Rock drill | |
| US20030159855A1 (en) | Drilling tool | |
| CN214498921U (en) | Special-shaped tooth diamond composite sheet and drill bit | |
| CN105927159B (en) | Pdc drill bit | |
| US1241176A (en) | Drill or boring member. | |
| CN205348162U (en) | Steel -pipe pile with dismantlement formula sword foot | |
| CN217106830U (en) | Gear wheel welding mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Cutting tooth and PDC bit with it Effective date of registration: 20211209 Granted publication date: 20171020 Pledgee: Laizhou Jinhui Financing Guarantee Co.,Ltd. Pledgor: LAIZHOU YUANYE SCIENCE AND TECHNOLOGY Co.,Ltd. Registration number: Y2021980014419 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221009 Granted publication date: 20171020 Pledgee: Laizhou Jinhui Financing Guarantee Co.,Ltd. Pledgor: LAIZHOU YUANYE SCIENCE AND TECHNOLOGY Co.,Ltd. Registration number: Y2021980014419 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |