CN213063478U - Novel sharp ridge-shaped cutting tooth - Google Patents
Novel sharp ridge-shaped cutting tooth Download PDFInfo
- Publication number
- CN213063478U CN213063478U CN202021424057.1U CN202021424057U CN213063478U CN 213063478 U CN213063478 U CN 213063478U CN 202021424057 U CN202021424057 U CN 202021424057U CN 213063478 U CN213063478 U CN 213063478U
- Authority
- CN
- China
- Prior art keywords
- ridge
- polycrystalline diamond
- convex
- diamond layer
- cutting tooth
- 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
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a novel spine cutting tooth belongs to probing drilling tool technical field, include: the cylindrical body comprises a hard alloy matrix and a polycrystalline diamond layer bonded on the top surface of the hard alloy matrix; the convex ridges are provided with a plurality of convex ridges which protrude out of the end surface of the polycrystalline diamond layer; the number of the partial wedge surfaces is at least two, and the partial wedge surfaces extend to the end face of the polycrystalline diamond layer from the bottom surface or the side wall of the hard alloy matrix in an upward inclined mode; the hard alloy matrix, the polycrystalline diamond layer, the partial wedge surface and the convex ridge form a sharp ridge together. The hard alloy base member, polycrystalline diamond layer, the inclined wedge surface and the convex ridge of the sharp spine cutting tooth of this application form sharp spine portion jointly, and this sharp spine portion can effectively wedge into the stratum, effectively releases stratum stress, improves broken rock efficiency, and sharp spine portion also can effectively disperse the bearing stress of cutting tooth when broken rock, improves cutting tooth shock resistance and life.
Description
Technical Field
The application relates to the technical field of drilling tools, in particular to a novel sharp-ridge-shaped cutting tooth.
Background
In recent years, in exploration and development of petroleum and natural gas resources, deep wells and ultra-deep wells become the main force for improving development of oil and gas resources, in such oil and gas drilling wells, hard plastic strata are often encountered, and the drilling cost is higher and higher along with increase of the well depth, so that the improvement of the drilling speed of the hard plastic strata becomes an important way and method for shortening the drilling period and reducing the drilling cost.
The primary PDC bit drilling in drilling from soft to medium hardness formations has become the standard of practice in the oil drilling industry. However, in drilling practice, when hard and plastic strata are drilled, the drill bit cannot bite into the strata, the generated vibration is more serious, the drill bit can slip and rotate, the severe early abrasion of the PDC drill bit can be caused, and the passivation of the drill bit and the failure of the drill bit are accelerated; changing the drill bit increases the tripping time and drilling costs.
In the existing bit design scheme, although the conventional round-tooth bit has certain impact resistance, the speed increasing effect is limited, and the bit pressure can only be increased to improve the mechanical drilling speed, but the mode can accelerate the abrasion of the bit and the dulling speed of the bit, and the number of the bits used can be increased. Therefore, pointed teeth have been proposed to improve the capability of the drill bit to penetrate into the ground and further improve the rock breaking efficiency of the drill bit, but although the pointed teeth have the capability of improving the capability of penetrating into the ground, the structure of the pointed teeth has poor collapse resistance and wear resistance, and the service life of the drill bit is shortened.
Disclosure of Invention
The embodiment of the application provides a novel sharp ridged cutting tooth to solve among the correlation technique sharp tooth and have the ability that improves and eat into the stratum, but its structural anti collapse is poor with wear resistance, has reduced the life's of drill bit problem.
The embodiment of the application provides a novel spine cutting tooth, include:
a cylindrical body comprising a cemented carbide substrate and a polycrystalline diamond layer bonded on a top surface of the cemented carbide substrate;
the convex ridges are provided with a plurality of convex ridges which protrude out of the end surface of the polycrystalline diamond layer;
at least two wedge surfaces are arranged, and the wedge surfaces extend from the bottom surface or the side wall of the hard alloy matrix to the end surface of the polycrystalline diamond layer in an upward inclined manner; the hard alloy substrate, the polycrystalline diamond layer, the partial wedge surface and the convex ridge form a sharp ridge together.
In some embodiments: the plurality of ridges are radially distributed on the end surface of the polycrystalline diamond layer and are intersected at the center of the polycrystalline diamond layer.
In some embodiments: at least one ridge in the plurality of ridges is positioned between two adjacent wedge surfaces, and the two adjacent wedge surfaces are symmetrically or asymmetrically arranged at two sides of the ridge.
In some embodiments: the side wall of the convex ridge is provided with a tooth flank, the top of the convex ridge is provided with a tooth crest, the tooth flank is any one of a plane, a convex cambered surface or a concave cambered surface, and the tooth crest is provided with a fillet.
In some embodiments: the convex ridge protrudes out of the end face of the polycrystalline diamond layer, the height of the end face of the polycrystalline diamond layer is 0-10 mm, the number of the convex ridges is 1-10, and the central angle between every two adjacent convex ridges is larger than or equal to 35 degrees.
In some embodiments: the inclined wedge surfaces are not intersected with the convex ridges, and the included angle between the inclined wedge surfaces and the axis of the cylindrical body is 0-75 degrees.
In some embodiments: at least one ridge of the plurality of ridges has a length greater than or equal to a radius of the cylindrical body.
In some embodiments: the inclined wedge surface is any one of a plane, a convex arc surface, a concave arc surface, a sawtooth surface or a wave surface.
In some embodiments: the end face of the polycrystalline diamond layer is any one of a plane, a convex arc face, a concave arc face or a wavy face, the thickness of the polycrystalline diamond layer is 1-6 mm, a first chamfered edge is arranged at the upper edge of the polycrystalline diamond layer, and a second chamfered edge is arranged at the bottom edge of the hard alloy substrate.
In some embodiments: the narrowest width of the sharp ridge part is 1-10 mm.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a novel sharp ridge cutting tooth, and the sharp ridge cutting tooth is provided with a cylindrical body, wherein the cylindrical body comprises a hard alloy matrix and a polycrystalline diamond layer bonded on the top surface of the hard alloy matrix; the convex ridges are provided with a plurality of convex ridges which protrude out of the end surface of the polycrystalline diamond layer; the number of the partial wedge surfaces is at least two, and the partial wedge surfaces extend to the end face of the polycrystalline diamond layer from the bottom surface or the side wall of the hard alloy matrix in an upward inclined mode; the hard alloy matrix, the polycrystalline diamond layer, the partial wedge surface and the convex ridge form a sharp ridge together.
Therefore, the hard alloy matrix, the polycrystalline diamond layer, the inclined wedge surface and the convex ridge of the sharp ridge-shaped cutting tooth form a sharp ridge together, the sharp ridge can be effectively wedged into a stratum, the stress of the stratum is effectively released, the rock breaking efficiency is improved, the stress borne by the cutting tooth during rock breaking can be effectively dispersed by the sharp ridge, and the impact resistance of the cutting tooth is improved. Compared with conventional round cutting teeth and pointed cutting teeth, the pointed cutting teeth can improve the grinding resistance of the drill bit, prolong the service life of the drill bit and improve the adaptability of the drill bit to the stratum.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a perspective view of the structure of an embodiment of the present application;
fig. 2 is a front view of the structure of the embodiment of the present application.
Reference numerals:
1. a cylindrical body; 2. a raised ridge; 3. an end face; 4a, a right wedge surface; 4b, a left wedge surface; 5. first chamfering; 6. second chamfering; 7. a cemented carbide substrate; 8. a sharp ridge portion; 9. a polycrystalline diamond layer; 10a, right flank; 10b, left flank.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a novel sharp ridged cutting tooth, and it can solve among the relevant art sharp tooth and have the ability that improves and eat into the stratum, but its structural anti collapse and wear resistance are poor, have reduced the life's of drill bit problem.
Referring to fig. 1 and 2, an embodiment of the present application provides a novel pointed ridge cutting tooth, including:
the cylindrical body 1 comprises a hard alloy matrix 7 and a polycrystalline diamond layer 9 bonded on the top surface of the hard alloy matrix 7.
Three convex ridges 2 are arranged on the convex ridge 2, and the three convex ridges 2 protrude out of the end surface of the polycrystalline diamond layer 9. The three convex ridges 2 are radially distributed on the end surface of the polycrystalline diamond layer 9, the three convex ridges 2 are intersected at the center of the polycrystalline diamond layer 9, the three convex ridges 2 are locally arranged on the circumference of the end surface of the polycrystalline diamond layer 9, and the central angle between every two adjacent convex ridges 2 is 120 degrees.
The two eccentric surfaces are respectively a left eccentric surface 4b and a right eccentric surface 4a, and the left eccentric surface 4b and the right eccentric surface 4a extend upwards from the bottom surface or the side wall of the hard alloy matrix 7 to the end surface 3 of the polycrystalline diamond layer 9 in an inclined mode.
The hard alloy matrix 7, the polycrystalline diamond layer 9, the left wedge surface 4b, the right wedge surface 4a and the ridge 2 form a sharp ridge 8 together.
The hard alloy matrix 7, the polycrystalline diamond layer 9, the left wedge surface 4b, the right wedge surface 4a and the ridge 2 of the sharp ridge-shaped cutting tooth form a sharp ridge 8 together. The sharp ridge 8 can be effectively wedged into a stratum, stratum stress is effectively released, the rock breaking efficiency is improved, the bearing stress of the cutting teeth during rock breaking can be effectively dispersed by the sharp ridge 8, and the impact resistance of the cutting teeth is improved.
The utility model provides a sharp spine cutting teeth during operation, the stratum is at first contacted to convex ridge 2, because 2 areas of convex ridge are little, wedges the stratum very easily, plays the effect of precrushing the stratum, and along with the weight of a bit increase, the cutting teeth is eaten into the stratum and is deepened, and carbide base 7, polycrystalline diamond layer 9, left side wedge face 4b and right side wedge face 4a form sharp spine 8 broken rock with convex ridge 2 contact stratum jointly.
Compared with conventional round cutting teeth and pointed cutting teeth, the pointed cutting teeth can improve the grinding resistance of the drill bit, prolong the service life of the drill bit and improve the adaptability of the drill bit to the stratum.
In some alternative embodiments: referring to fig. 1 and 2, in the present embodiment, a novel sharp-ridge cutting tooth is provided, in which one ridge 2 of three ridges 2 on a polycrystalline diamond layer 9 of the sharp-ridge cutting tooth is located between a left wedge surface 4b and a right wedge surface 4a, and the left wedge surface 4b and the right wedge surface 4a are symmetrically disposed on both sides of the ridge 2 with the ridge 2 as a center line. At least one ridge 2 of the three ridges 2 has a length greater than or equal to the radius of the cylindrical body 1.
In some alternative embodiments: referring to fig. 1 and 2, the present embodiment provides a novel cutting tooth having a sharp ridge shape, in which the side wall of the ridge 2 of the cutting tooth has flanks including a left flank 10b and a right flank 10 a. The top of the convex ridge 2 is provided with a tooth crest, the left tooth flank surface 10b and the right tooth flank surface 10a are concave arc surfaces, and the left tooth flank surface 10b and the right tooth flank surface 10a adopt a concave arc surface structure, so that the stress between the convex ridge 2 and the polycrystalline diamond layer 9 can be eliminated, and the fatigue fracture caused by stress concentration when the convex ridge 2 scrapes the stratum is avoided. The tooth top is equipped with the fillet, and the tooth top is the main action face of wedging the stratum, and the tooth top is equipped with the fillet and can reduces the contact surface of convex ridge 2 and stratum, improves broken rock efficiency.
The height H of the end face of the ridge 2 protruding out of the polycrystalline diamond layer 9 is 2mm, and the width D of the narrowest part of the ridge part 8 is 4 mm. The left inclined wedge surface 4b and the right inclined wedge surface 4a are not intersected with the convex ridge 2, and the included angle alpha between the left inclined wedge surface 4b and the axis of the cylindrical body 1 is 30 degrees; the right wedge surface 4a forms an angle beta of 30 degrees with the axis of the cylindrical body 1. The left wedge surface 4b and the right wedge surface 4a are planes, and a person skilled in the art can set the left wedge surface 4b and the right wedge surface 4a as any one of a convex arc surface, a concave arc surface, a sawtooth surface or a wavy surface.
The end surface of the polycrystalline diamond layer 9 is a plane, and those skilled in the art may set the end surface of the polycrystalline diamond layer 9 to any one of a convex arc surface, a concave arc surface, or a wavy surface. The thickness of polycrystalline diamond layer 9 is 4mm, is equipped with first chamfered edge 5 at polycrystalline diamond layer 9's top edge, and the bottom surface edge of carbide base member 7 is equipped with second chamfered edge 6.
Principle of operation
The embodiment of the application provides a novel sharp ridge cutting tooth, and as the sharp ridge cutting tooth is provided with a cylindrical body 1, the cylindrical body 1 comprises a hard alloy matrix 7 and a polycrystalline diamond layer 9 bonded on the top surface of the hard alloy matrix 7; at least two wedge surfaces are arranged, and extend upwards from the bottom surface or the side wall of the hard alloy matrix 7 to the end surface of the polycrystalline diamond layer 9; the hard alloy matrix 7, the polycrystalline diamond layer 9, the wedge surface and the ridge 2 form a sharp ridge 8 together.
The hard alloy matrix 7, polycrystalline diamond layer 9, the inclined wedge surface and the convex ridge 2 of the sharp spine cutting tooth of this application form sharp spine 8 jointly, and this sharp spine 8 can effectively wedge into the stratum, effectively releases stratum stress, improves broken rock efficiency, and sharp spine 8 also can effectively disperse the bearing stress of cutting tooth when breaking rock, improves the cutting tooth and shocks resistance. The sharp-ridge-shaped cutting tooth of the application can improve the grinding resistance of the drill bit, prolong the service life of the drill bit and improve the adaptability of the drill bit to the stratum compared with the conventional circular cutting tooth and the sharp-ridge-shaped cutting tooth.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A novel pointed ridge cutting tooth, comprising:
the cylindrical body (1) comprises a hard alloy matrix (7) and a polycrystalline diamond layer (9) bonded on the top surface of the hard alloy matrix (7);
the convex ridge (2) is provided with a plurality of convex ridges (2), and the convex ridges (2) protrude out of the end surface (3) of the polycrystalline diamond layer (9);
at least two wedge surfaces are arranged, and the wedge surfaces extend from the bottom surface or the side wall of the hard alloy matrix (7) to the end surface of the polycrystalline diamond layer (9) in an upward inclined manner; the hard alloy substrate (7), the polycrystalline diamond layer (9), the wedge surface and the convex ridge (2) jointly form a sharp ridge part (8).
2. A novel pointed ridge cutting tooth as claimed in claim 1, wherein:
the ridges (2) are radially distributed on the end surface of the polycrystalline diamond layer (9) and are intersected at the center of the polycrystalline diamond layer (9).
3. A novel pointed ridge cutting tooth as claimed in claim 1 or 2, characterized in that:
at least one convex ridge (2) in the convex ridges (2) is positioned between two adjacent wedge surfaces, and the two adjacent wedge surfaces are symmetrically or asymmetrically arranged at two sides of the convex ridge (2).
4. A novel pointed ridge cutting tooth as claimed in claim 1 or 2, characterized in that:
the side wall of the convex ridge (2) is provided with a tooth flank, the top of the convex ridge is provided with a tooth crest, the tooth flank is any one of a plane, a convex cambered surface or a concave cambered surface, and the tooth crest is provided with a fillet.
5. A novel pointed ridge cutting tooth as claimed in claim 1 or 2, characterized in that:
the convex ridge (2) protrudes out of the end face of the polycrystalline diamond layer (9) and is 0-10 mm in height, the number of the convex ridges (2) is 1-10, and the central angle between every two adjacent convex ridges (2) is larger than or equal to 35 degrees.
6. A novel pointed ridge cutting tooth as claimed in claim 1 or 2, characterized in that:
the inclined wedge surfaces are not intersected with the convex ridges (2), and an included angle between each inclined wedge surface and the axis of the cylindrical body (1) is 0-75 degrees.
7. A novel pointed ridge cutting tooth as claimed in claim 1 or 2, characterized in that:
the length of at least one ridge (2) in the plurality of ridges (2) is larger than or equal to the radius of the cylindrical body (1).
8. A novel pointed ridge cutting tooth as claimed in claim 1, wherein:
the inclined wedge surface is any one of a plane, a convex arc surface, a concave arc surface, a sawtooth surface or a wave surface.
9. A novel pointed ridge cutting tooth as claimed in claim 1, wherein:
the end face of polycrystalline diamond layer (9) is any one of plane, convex arc face, concave arc face or wavy face, the thickness of polycrystalline diamond layer (9) is 1 ~ 6mm, the end face upper edge of polycrystalline diamond layer (9) is equipped with first chamfered edge (5), the bottom surface edge of carbide base member (7) is equipped with second chamfered edge (6).
10. A novel pointed ridge cutting tooth as claimed in claim 1, wherein:
the width of the narrowest part of the sharp ridge part (8) is 1-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021424057.1U CN213063478U (en) | 2020-07-20 | 2020-07-20 | Novel sharp ridge-shaped cutting tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021424057.1U CN213063478U (en) | 2020-07-20 | 2020-07-20 | Novel sharp ridge-shaped cutting tooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213063478U true CN213063478U (en) | 2021-04-27 |
Family
ID=75574307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021424057.1U Active CN213063478U (en) | 2020-07-20 | 2020-07-20 | Novel sharp ridge-shaped cutting tooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213063478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116197975A (en) * | 2023-02-21 | 2023-06-02 | 苏州明捷精密机械有限公司 | Hard alloy cutter head tooth seat structure of woodworking circular saw blade |
-
2020
- 2020-07-20 CN CN202021424057.1U patent/CN213063478U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116197975A (en) * | 2023-02-21 | 2023-06-02 | 苏州明捷精密机械有限公司 | Hard alloy cutter head tooth seat structure of woodworking circular saw blade |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4872520A (en) | Flat bottom drilling bit with polycrystalline cutters | |
| US4716977A (en) | Specially shaped cutting element for earth boring apparatus | |
| CN108487865B (en) | Pointed ridge-shaped cutting tooth | |
| US6050354A (en) | Rolling cutter bit with shear cutting gage | |
| EP0658682B1 (en) | Gage cutting insert for roller bit | |
| US3269470A (en) | Rotary-percussion drill bit with antiwedging gage structure | |
| US5287936A (en) | Rolling cone bit with shear cutting gage | |
| US5467836A (en) | Fixed cutter bit with shear cutting gage | |
| US4086973A (en) | Asymmetric insert for inner row of an earth boring cutter | |
| US6904983B2 (en) | Low-contact area cutting element | |
| US20060283640A1 (en) | Stepped polycrystalline diamond compact insert | |
| US8616305B2 (en) | Fixed bladed bit that shifts weight between an indenter and cutting elements | |
| US20100059288A1 (en) | Cutting Element Attached to Downhole Fixed Bladed Bit at a Positive Rake | |
| EP0584255A1 (en) | Rotary mining tools | |
| US20100065332A1 (en) | Method for Drilling with a Fixed Bladed Bit | |
| CN112983286B (en) | Cutting tooth and drill bit with same | |
| US20100059289A1 (en) | Cutting Element with Low Metal Concentration | |
| CN213063478U (en) | Novel sharp ridge-shaped cutting tooth | |
| CN211623329U (en) | Hard stratum mixed tooth PDC drill bit | |
| US6918455B2 (en) | Drill bit with large inserts | |
| RU2332553C2 (en) | Drill bit for percussion drilling, drilling system incorporating such drill bit and well-boring method | |
| CN208310700U (en) | A kind of ansa shape cutting tooth | |
| CN207420458U (en) | A kind of Mixed drilling bit for hard formation drilling well | |
| CN209539271U (en) | A kind of ansa shape cutting tooth | |
| CN209724234U (en) | A kind of plastic formation composite polycrystal-diamond |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |