CN211058725U - Polycrystalline diamond composite blade wing type drill bit - Google Patents
Polycrystalline diamond composite blade wing type drill bit Download PDFInfo
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- CN211058725U CN211058725U CN201921868264.3U CN201921868264U CN211058725U CN 211058725 U CN211058725 U CN 211058725U CN 201921868264 U CN201921868264 U CN 201921868264U CN 211058725 U CN211058725 U CN 211058725U
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Abstract
The utility model discloses a polycrystalline diamond composite blade wing formula drill bit, concretely relates to oil field drilling tool field, including base member, main wing of a knife, its characterized in that: the quantity of main wing of a knife is three and interconnect installs in the top surface and the side of base member, and three vice wing of a knife is installed to the side of base member, and the top surface fixed mounting of base member has the nozzle, and the chip groove has been seted up to the top surface of base member, and the fixed surface of main wing of a knife, vice wing of a knife installs a plurality of PDC teeth and evenly distributed, and the surface mounting that main wing of a knife, vice wing are close to the base member bottom has stable tooth, and the inside fixed mounting of base member has the drill bit main part. The utility model discloses a set up three main wing of a knife and vice wing of a knife respectively, the edge part that vice wing of a knife is located the base member reserves great space for the chip removal to set up oval chip groove, oval shape is compared littleer in the discharge resistance of its detritus of traditional circular, and the chip removal rate is higher, is difficult to take place the mud bag phenomenon, and six wing of a knife structures make drill bit stability improve greatly.
Description
Technical Field
The utility model relates to an oil field drilling tool technical field, more specifically says, the utility model specifically is a polycrystalline diamond composite sheet blade formula drill bit.
Background
The polycrystalline diamond compact bit is a PCD bit for short, a polycrystalline diamond mode is mainly adopted, a ferrous metal wire and a non-ferrous metal wire material are adopted in a polycrystalline process, and compared with a common hard alloy wire drawing die, the durability of the PCD bit is improved by hundreds of times, so that the main advantage of the PCD bit in use and drilling is that the durability is extremely high on the premise of ensuring the hardness, cobalt is the most common PCD bit binding agent at present, the PCD bit has many advantages of high strength, good wear resistance and the like, the cost of wire drawing is low, and the PCD bit is very suitable for petroleum drilling operation.
The PDC drill bit used at present is mainly provided with cutter blade type teeth, all PDC cutting teeth are arranged on the cutter blades, if the number of the cutter blades is small, a chip discharge groove is large, the drill bit is not easy to generate a mud pocket phenomenon during drilling, but the stability of the drill bit is poor, so that the drill bit is easy to damage in advance; if the number of the blades is large, the stability of the drill bit is high, but the chip discharge grooves are small, the discharge resistance of rock debris is large, and therefore the mud pocket phenomenon is easy to occur when the drill bit drills.
Therefore, a polycrystalline diamond composite blade type drill bit with high stability and difficult mud-coating phenomenon is needed.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above defects of the prior art, the embodiment of the utility model provides a polycrystalline diamond composite blade wing type drill bit, through setting up three main blades and vice blades respectively, the edge part that the vice blade is located the base member reserves great space for the chip removal, and set up oval chip groove, oval shape is compared in traditional round its detritus' discharge resistance littleer, the chip removal rate is higher, be difficult to take place the mud bag phenomenon, and six blade structures make drill bit stability improve greatly; in addition, this use is novel through the wearing layer that polycrystalline diamond compact piece that sets up high content cobalt element on base member and PDC tooth surface made, further improves the wearability of this drill bit, and improves chromium element content in the drill bit base member, chromium can improve the intensity and the plasticity of alloy steel greatly, combines high compressive strength, hardness and the wearability of polycrystalline diamond compact piece, so have high life-span when can broken rock easily, improve the efficiency of construction tunnelling, with the problem of proposing in solving above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a polycrystalline diamond composite sheet blade formula drill bit, includes base member, main wing of a knife, the quantity of main wing of a knife is three and interconnect fixed mounting in the top surface and the side of base member, the side fixed mounting of base member has three vice wing to extend to the top surface edge end of base member, the top surface fixed mounting of base member has the nozzle, the chip groove has been seted up to the top surface of base member, the chip groove is oval and is located evenly distributed between the main wing of a knife, the fixed surface of main wing of a knife, vice wing of a knife installs a plurality of PDC teeth and evenly distributed, fixed surface that main wing of a knife, vice wing of a knife are close to the base member bottom installs stable tooth, stable tooth is located same horizontal plane, the inside fixed mounting of base member has the drill bit main part, the drilling liquid runner has been seted up to the inside of drill bit main part, the runner is linked.
In a preferred embodiment, the PDC tooth includes a digging tooth located at the center of the connection portion of the main blade, a plowing tooth located at the edge portion of the top face of the main blade and the top face of the auxiliary blade, and a reamer tooth located at the side faces of the main blade and the auxiliary blade.
In a preferred embodiment, the tunneling tooth comprises a fixed part and a cutting surface, the end of the fixed part is of an arc-shaped structure, the cutting surface is of a semicircular polycrystalline diamond compact structure, and an included angle is formed between the cutting surface and the fixed part.
In a preferred embodiment, the nozzles and the chip grooves are oval, the nozzles are annularly distributed between the main blade and the auxiliary blade, and the chip grooves are uniformly and annularly distributed at the front end of the auxiliary blade.
In a preferred embodiment, the side surfaces of the main blade and the auxiliary blade form an inclination angle of 8-12 degrees with the center line of the crown head of the base body, the thickness of the main blade gradually increases along with the distance from the blade edge, and the tail part is in a parabolic shape.
In a preferred embodiment, the substrate is a cemented carbide component, and the substrate comprises the following raw materials in percentage by mass: 0.24 to 0.30 percent of C, 3.1 to 3.5 percent of Nis, 0.6 to 0.8 percent of Mns, 1.7 to 1.9 percent of Crs, 0.2 to 0.4 percent of Mos, 0.8 to 1.0 percent of V, less than or equal to 0.02 percent of impurity P, less than or equal to 0.02 percent of impurity S, and the balance of Fe.
In a preferred embodiment, the surfaces of the substrate, the PDC teeth and the stabilizing teeth are provided with wear-resistant layers with the thickness of 0.1-0.5mm, and the wear-resistant layers respectively comprise the following raw materials in percentage by mass: 80-82% of diamond, 12-13% of Co, and 6-7% of Si.
In a preferred embodiment, the substrate is subjected to a surface carburizing treatment, and the PDC teeth are welded to the main blade and the auxiliary blade integrally by brazing.
The utility model discloses a technological effect and advantage:
1. the novel drill bit is provided with the three main blades and the three auxiliary blades respectively, the auxiliary blades are positioned on the edge part of the base body to reserve a larger space for chip removal, and are provided with the oval chip removal grooves, compared with the traditional round rock chips, the oval drill bit has smaller discharge resistance and higher chip removal rate, and is not easy to generate mud pocket phenomenon, and the stability of the drill bit is greatly improved due to the six-blade structure;
2. this use is novel through the wearing layer that polycrystalline diamond compact piece that sets up high content cobalt element on base member and PDC tooth surface made, further improves the wearability of this drill bit, and improves chromium element content in the drill bit base member, and chromium can improve the intensity and the plasticity of alloy steel greatly, combines high compressive strength, hardness and the wearability of polycrystalline diamond compact piece, so have high life-span when can broken rock easily, improve the efficiency of construction tunnelling.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the main structure of the drill bit of the present invention.
Fig. 3 is a schematic cross-sectional structure diagram of the drill bit body of the present invention.
Fig. 4 is a schematic diagram of the PDC tooth structure of the present invention.
The reference signs are: 1. a substrate; 2. a main blade; 3. a nozzle; 4. a secondary blade; 5. a chip groove; 6. PDC teeth; 7. a drill bit body; 8. a stabilizing tooth; 61. tunneling teeth; 62. plowing into teeth; 63. reaming teeth; 611. a fixed part; 612. and (6) cutting the surface.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The polycrystalline diamond composite blade type drill bit as shown in the attached figures 1-4 comprises a base body 1 and three main blades 2, wherein the three main blades 2 are fixedly connected and installed on the top surface and the side edge of the base body 1, three auxiliary blades 4 are fixedly installed on the side edge of the base body 1 and extend to the edge end of the top surface of the base body 1, a nozzle 3 is fixedly installed on the top surface of the base body 1, chip discharge grooves 5 are formed in the top surface of the base body 1, the chip discharge grooves 5 are oval and are uniformly distributed among the main blades 2, a plurality of PDC teeth 6 are fixedly installed on the surfaces of the main blades 2 and the auxiliary blades 4, the stable teeth 8 are fixedly installed on the surfaces, close to the bottom end of the base body 1, of the stable teeth 8 are located on the same horizontal plane, a drill bit main body 7 is fixedly installed inside the drill bit main body 7, a drilling liquid inlet flow channel is formed inside the drill bit main body 7, the flow channel, The chip grooves 5 are communicated.
The implementation mode is specifically as follows: by respectively arranging the three main blades 2 and the auxiliary blades 4, the auxiliary blades 41 are positioned at the edge part of the base body to reserve a larger space for chip removal, and are provided with the oval chip removal grooves 5, compared with the traditional round rock chips, the oval rock chips are smaller in discharge resistance, higher in chip removal rate and difficult to generate mud pocket phenomenon, and the stability of the drill bit is greatly improved due to the six-blade structure; in addition, this use is novel through the wearing layer that the polycrystalline diamond compact piece that sets up high content cobalt element on base member 1 and PDC tooth 6 surface made, further improves the wearability of this drill bit, and improves chromium element content in the drill bit base member, and the intensity and the plasticity of alloy steel can be improved greatly to chromium, combines high compressive strength, hardness and the wearability of polycrystalline diamond compact piece, so have high life-span when can broken rock easily, improve the construction and dig efficiency.
The PDC teeth 6 comprise tunneling teeth 61, plowing teeth 62 and expanding teeth 63, the tunneling teeth 61 are located in the center of the connecting portion of the main blade 2, the plowing teeth 62 are located on the edge portion of the top face of the main blade 2 and the top face of the auxiliary blade 4, and the expanding teeth 63 are located on the side faces of the main blade 2 and the auxiliary blade 4, so that tunneling, plowing and expanding procedures are respectively carried out.
The tunneling tooth 61 comprises a fixing part 611 and a cutting surface 612, the end of the fixing part 611 is of an arc-shaped structure, the cutting surface 612 is of a semicircular polycrystalline diamond compact structure, and an included angle is formed between the cutting surface 612 and the fixing part 611, so that the tunneling tooth 61 is sharper, and the tunneling efficiency is improved.
Wherein, nozzle 3, chip groove 5 are oval, and nozzle 3 is cyclic annular and distributes between main wing 2, vice wing 4, and chip groove 5 evenly cyclic annular distributes in the front end of vice wing 4, oval chip groove 5, and oval shape is compared in the discharge resistance of its detritus of traditional circular shape littleer, and the chip removal rate is higher.
Wherein, the side surfaces of the main blade 2 and the auxiliary blade 4 form an inclination angle of 8-12 degrees with the center line of the crown head of the substrate 1, the thickness of the main blade 2 is gradually thickened along with the distance from the blade, and the tail part is in a parabola shape, so that the structures of the main blade 2 and the auxiliary blade 4 are firmer.
The base body 1 is a hard alloy component, and the base body 1 comprises the following raw materials in percentage by mass: 0.24-0.30% of C, 3.1-3.5% of Ni0.6-0.8% of Mn0.7-1.9% of Cr1.7-1.9% of Mo0.2-0.4% of V0.8-1.0% of impurity P less than or equal to 0.02% of impurity S, and the balance of Fe, wherein high content of Cr is beneficial to improving the wear resistance of the matrix 1.
Wherein, the surfaces of the substrate 1, the PDC teeth 6 and the stabilizing teeth 8 are provided with wear-resistant layers with the thickness of 0.1-0.5mm, and the wear-resistant layers respectively comprise the following raw materials in percentage by mass: 80% -82% of diamond, 12% -13% of Co, 6% -7% of Si, and the wear resistance of the drill bit is improved.
The base body 1 is subjected to surface carburization, and the PDC teeth 6, the main blades 2 and the auxiliary blades 4 are welded into a whole through brazing, so that the PDC teeth 6, the main blades 2 and the auxiliary blades 4 are connected more firmly.
The utility model discloses the theory of operation:
firstly, the drill bit is arranged at the end part of an oil field drilling machine, the drill bit is driven to carry out high-speed rotary tunneling by utilizing the power of the drilling machine, and meanwhile, the continuous supply of drilling fluid is guaranteed so as to play the functions of flushing rock debris and heat dissipation, the tunneling tooth 61 made of PDC materials, the tunneling tooth 62 plowed in, and the reaming tooth 63 respectively carries out tunneling, plowing in and reaming processes, three main blades 2 and auxiliary blades 4 are respectively arranged, the edge part of the auxiliary blade 41 positioned on a base body reserves a larger space for chip removal, and an oval chip removal groove 5 is arranged, the oval shape is smaller than the traditional discharge resistance of the round rock debris, the chip removal rate is higher, the mud pocket phenomenon is not easy to occur, and the stability of the drill bit is greatly improved by the six-blade.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a polycrystalline diamond composite blade wing formula drill bit, includes base member (1), main blade (2), its characterized in that: the quantity of main wing of a knife (2) is three and interconnect fixed mounting in the top surface and the side of base member (1), the side fixed mounting of base member (1) has the top surface edge end that three vice wing of a knife (4) extended to base member (1), the top surface fixed mounting of base member (1) has nozzle (3), chip groove (5) have been seted up to the top surface of base member (1), chip groove (5) are oval and lie in evenly distributed between main wing of a knife (2), the fixed surface of main wing of a knife (2), vice wing of a knife (4) installs a plurality of PDC tooth (6) and evenly distributed, the fixed surface that main wing of a knife (2), vice wing of a knife (4) are close to base member (1) bottom installs stability tooth (8), stability tooth (8) are located same horizontal plane, the inside fixed mounting of base member (1) has drill bit main part (7), drilling liquid flow channels are formed in the drill bit main body (7), and the flow channels are communicated with the nozzles (3) and the chip grooves (5).
2. The polycrystalline diamond compact bladed vane drill bit of claim 1, wherein: PDC tooth (6) advance tooth (62), reamer tooth (63) including tunnelling tooth (61), plough, tunnelling tooth (61) are located the center that main wing of blade (2) link to each other the position, plough advances tooth (62) and is located the edge portion of main wing of blade (2) top surface and the top surface of vice wing (4), reamer tooth (63) are located the side of main wing of blade (2), vice wing of blade (4).
3. The polycrystalline diamond compact bladed vane drill bit of claim 2, wherein: the tunneling tooth (61) comprises a fixing portion (611) and a cutting face (612), the end portion of the fixing portion (611) is of an arc-shaped structure, the cutting face (612) is of a semicircular polycrystalline diamond compact structure, and an included angle is formed between the cutting face (612) and the fixing portion (611).
4. The polycrystalline diamond compact bladed vane drill bit of claim 1, wherein: nozzle (3), chip groove (5) are oval, nozzle (3) are cyclic annular and distribute between main wing of a knife (2), vice wing of a knife (4), chip groove (5) even cyclic annular distributes in the front end of vice wing of a knife (4).
5. The polycrystalline diamond compact bladed vane drill bit of claim 1, wherein: the side surfaces of the main blade (2) and the auxiliary blade (4) and the center line of the crown head of the base body (1) form an inclination angle of 8-12 degrees, the thickness of the main blade (2) is gradually increased along with the distance from the blade, and the tail part of the main blade is in a parabolic shape.
6. The polycrystalline diamond compact bladed vane drill bit of claim 1, wherein: the base body (1) is subjected to surface carburization, and the PDC teeth (6), the main blade wings (2) and the auxiliary blade wings (4) are welded into a whole through brazing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921868264.3U CN211058725U (en) | 2019-11-01 | 2019-11-01 | Polycrystalline diamond composite blade wing type drill bit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921868264.3U CN211058725U (en) | 2019-11-01 | 2019-11-01 | Polycrystalline diamond composite blade wing type drill bit |
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| CN211058725U true CN211058725U (en) | 2020-07-21 |
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| CN201921868264.3U Active CN211058725U (en) | 2019-11-01 | 2019-11-01 | Polycrystalline diamond composite blade wing type drill bit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151015A (en) * | 2021-11-16 | 2022-03-08 | 安徽亚珠金刚石股份有限公司 | Artificial diamond drill bit and manufacturing method thereof |
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2019
- 2019-11-01 CN CN201921868264.3U patent/CN211058725U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151015A (en) * | 2021-11-16 | 2022-03-08 | 安徽亚珠金刚石股份有限公司 | Artificial diamond drill bit and manufacturing method thereof |
| CN114151015B (en) * | 2021-11-16 | 2023-08-11 | 安徽亚珠金刚石股份有限公司 | Artificial diamond drill bit and manufacturing method thereof |
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