CN209780766U - Steel body type petroleum drill bit - Google Patents
Steel body type petroleum drill bit Download PDFInfo
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- CN209780766U CN209780766U CN201920607083.9U CN201920607083U CN209780766U CN 209780766 U CN209780766 U CN 209780766U CN 201920607083 U CN201920607083 U CN 201920607083U CN 209780766 U CN209780766 U CN 209780766U
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Abstract
The application discloses steel body formula oil drill bit compares with prior art, includes: a steel base, the steel base comprising: a body structure; a drilling end located on one side of the main structure; a mounting end located on the other side of the main body structure; a blade disposed on the drilling end; a socket on the blade; the main body structure, the drilling end, the mounting end and the blade are integrally formed; locate the matrix hard surface layer on the steel base member, the matrix hard surface layer is printed one shot forming by 3D. The application provides a steel body formula oil drill bit, compare in prior art, it can omit the process of polishing behind build-up welding and the build-up welding, avoids the secondary damage of PDC flank socket, extension drill bit life.
Description
Technical Field
The application relates to the technical field of petroleum drilling, in particular to a steel body type petroleum drill bit.
Background
The drill bit can be used for drilling oil during oil exploitation, is an important tool for oil drilling, and the working performance of the drill bit directly influences the drilling quality, the drilling efficiency and the drilling cost. Steel body type drill bits are very popular in the field of oil drilling because of their excellent toughness, impact resistance and low cost. However, the poor erosion resistance of the steel substrate has still limited some of the developments in steel body type bits. In order to not only retain the high toughness of the steel member matrix, but also enhance the erosion resistance and wear resistance of the steel member matrix, the general method is to perform surfacing on the surface of the crown part of the steel body drill bit, and improve the erosion resistance and wear resistance of the crown part of the steel body drill bit by surfacing a hard surface layer of a matrix.
From the perspective of impact resistance and toughness, the steel body drill bit has more advantages in drilling effect and lower cost. In the prior art, a steel body type drill bit generally adopts a machining mode or a sand casting mode to process a drill bit crown part, then a layer of welding flux is overlaid on the surface of the crown part, a matrix hard surface layer on the surface of the drill bit crown part is processed to a specified size through grinding, and finally PDC teeth are welded into tooth sockets. The overlaying process in the front must ensure that the tooth sockets of the PDC teeth are prevented from being filled with overlaying materials as little as possible, the more the PDC teeth and the tooth sockets are distributed on the crown part of the drill bit, the greater the workload in the process of grinding the hard surface layer of the matrix. And the reality is that very easily weld the seam edge or inside matrix hard surface layer during the build-up welding, causes subsequent PDC tooth can't braze to the assigned position, must be one by one with the peripheral unnecessary build-up welding material of seam clearly clean.
The grinding and removing process can prolong the processing period, consume time and cost, and damage the tooth socket of the original steel body type drill again, so that the tooth socket is enlarged and the brazing gap is increased. The PDC teeth cannot be firmly welded on the crown of the drill bit, and the PDC teeth fall off and fail if the PDC teeth are serious. And thirdly, the brazing position of the PDC teeth is changed, the manufacturing error is increased, and the performance of the drill bit is influenced. In addition, a matrix hard surface layer is gradually welded on the surface of the crown part in a surfacing mode, and in order to ensure that the matrix hard surface layers of all parts of the crown part have the same thickness, the crown part of the steel body drill bit is firstly polished, so that surfacing is facilitated and the thickness of the surfacing layer is ensured to be consistent, and thus, the processing period of the drill bit product is prolonged.
Therefore, how to provide a steel body formula oil drill bit, it can omit the process of polishing after build-up welding and build-up welding, avoids the secondary damage of tooth socket, guarantees that matrix hard surface layer thickness everywhere is even, extension drill bit life has become the technical problem that technical staff in the field had a urgent need to solve.
SUMMERY OF THE UTILITY MODEL
For solving above-mentioned technical problem, this application provides a steel body formula oil drill bit, and it can omit the process of polishing behind build-up welding and the build-up welding, avoids the secondary damage of flank nest, guarantees that matrix hard surface layer thickness everywhere is even, extension drill bit life.
The technical scheme provided by the application is as follows:
The application provides a steel body formula oil drill bit includes: a steel base, the steel base comprising: a body structure; a drilling end located on one side of the main structure; a mounting end located on the other side of the main body structure; a blade disposed on the drilling end; a socket on the blade; the main body structure, the drilling end, the mounting end and the blade are integrally formed;
Locate the matrix hard surface layer on the steel base member, the matrix hard surface layer is printed one shot forming by 3D.
Further, in a preferred mode of the present invention, the carcass hard face layer has holes of the same size as the dimples in the carcass hard face layer.
further, in a preferred mode of the present invention, the carcass hard layer is brazed to the steel member base.
Further, in the preferred embodiment of the present invention, the thickness of the carcass hard layer is specifically 1-3 mm.
Further, in the preferred mode of the present invention, the thickness of the carcass hard layer is specifically 2-2.8 mm.
Further, in a preferred aspect of the present invention, the carcass hard layer includes: the first hard surface layer is arranged at the drilling end, and the second hard surface layer is arranged on the side wall of the drill bit.
Further, in a preferred mode of the present invention, the blades are specifically 4-8 blades, and are uniformly distributed on the drilling end.
Further, in a preferred mode of the present invention, the number of the blades is specifically 6.
The utility model provides a pair of steel body formula oil drill bit, compared with the prior art, the utility model relates to a steel body formula oil drill bit includes: the steel part base member, the steel part base member includes: a body structure; a drilling end located at one side of the main structure; the mounting end is positioned at the other side of the main body structure; a blade arranged on the drilling end; a socket on the blade; wherein, the main body structure, the drilling end, the mounting end and the blade are of an integrally formed structure; still including locating the matrix hard surface layer on the steel base member, the matrix hard surface layer is printed one shot forming by 3D. Adopt 3D to print one shot forming's hard surface shell and locate on the steel base member, can leave out the process that steel body drill bit crown need polish earlier before welding matrix hard surface layer, and build-up welding has accomplished matrix hard surface layer and need polish matrix hard surface layer to the process of same thickness, the preparation cycle of drill bit has been shortened greatly, and the production cost is reduced, because the matrix hard surface layer forms through 3D printing, can guarantee that matrix hard surface layer thickness everywhere is even, compare with the drill bit that has ordinary matrix hard surface layer, compare in prior art, the life of drill bit has been prolonged remarkably.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of an overall structure of a steel body type oil drill bit according to an embodiment of the present invention;
fig. 2 is a split type schematic view of a steel body type oil drill bit provided by the embodiment of the utility model.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, 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 only a part of the embodiments of the present application, and 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.
As shown in fig. 1 to 2, an embodiment of the present invention provides a steel body type oil drill, including: a steel base 1, the steel base 1 comprising: a body structure 101; a drilling end 102 located on one side of the body structure 101; a mounting end 103 located on the other side of the main body structure 101; a blade 104 disposed on the drilling end 102; a socket 105 on the blade 104; the main body structure 101, the drilling end 102, the mounting end 103, and the blade 104 are integrally formed;
Locate matrix hard surface layer 2 on the steel base member 1, matrix hard surface layer 2 prints one shot forming by 3D.
The embodiment of the utility model provides a steel body formula oil drill bit, compared with the prior art, the embodiment of the utility model provides a steel body formula oil drill bit that relates to includes: steel base member 1, steel base member 1 includes: a body structure 101; a drilling end 102 located on one side of the body structure 101; a mounting end 103 located on the other side of the body structure 101; blades 104 on the drilling end 102; a socket 105 on the blade 104; wherein, the main body structure 101, the drilling end 102, the mounting end 103 and the blade 104 are an integrated structure; still including locating matrix hard-facing layer 2 on the steel member base member 1, matrix hard-facing layer 2 prints one shot forming by 3D. Adopt 3D to print one shot forming's hard surface shell and locate on steel base member 1, can leave out the process that steel body drill bit crown need polish earlier before welding matrix hard surface layer 2, and build-up welding has accomplished matrix hard surface layer 2 and need polish matrix hard surface layer 2 to the process of same thickness, the preparation cycle of drill bit has been shortened greatly, production cost is reduced, because matrix hard surface layer 2 forms through 3D printing, can guarantee that matrix hard surface layer 2 thickness is even everywhere, compare with the drill bit that has ordinary matrix hard surface layer 2, drill bit crown atress is more even, compare in prior art, the life of drill bit has been prolonged remarkably.
Specifically, in the embodiment of the present invention, the carcass hard layer 2 has holes with the same size as the tooth sockets 105. The matrix hard surface layer 2 of the traditional steel body type drill bit needs surfacing and then polishing, and the steel body type drill bit provided by the utility model removes the procedures of surfacing and polishing after surfacing; the hard surface shell of the steel body type drill bit is prepared by adopting a selective melting additive manufacturing mode, holes with the same size as the tooth sockets 105 are reserved in the shell, so that the shell and a steel piece base body cannot submerge the tooth sockets 105 or exceed the edges of the tooth sockets 105 when being welded into a whole, and the thickness of the tire body hard surface layer 2 on each part of the surface of a crown part can be ensured to be consistent.
specifically, in the embodiment of the present invention, the carcass hard layer is brazed on the steel member base 1. The method is characterized in that the hard surface layer of the tire body adopts a 3D printing mode, and the hard surface layer of the tire body and the steel body are welded into a whole through brazing, so that the process of polishing the crown of a drill bit of the steel body in advance due to surfacing is omitted, and meanwhile, the same thickness can be ensured at all positions of the hard surface layer of the tire body at the crown; because the shape and the size of the printed carcass hard surface layer shell are fixed, the position of the tooth socket 105 cannot be filled, and the secondary damage caused by grinding of the tooth socket 105 is avoided.
Specifically, in the embodiment of the present invention, the thickness of the carcass hard layer 2 is specifically 1-3 mm.
Specifically, in the embodiment of the present invention, the thickness of the carcass hard layer 2 is specifically 2-2.8 mm.
Specifically, in the embodiment of the present invention, the carcass hard layer 2 includes: a first hard-face layer 201 disposed at the drilling end 102 and a second hard-face layer 202 disposed at the sidewall of the drill bit.
Specifically, in the embodiment of the present invention, the blades 104 are specifically 4-8, and are uniformly distributed on the drilling end 102.
Specifically, in the embodiment of the present invention, the number of the blades 104 is specifically 6.
to elaborate in more detail, at present, a key core component frequently used in the oil drilling and production industry is a PDC drill bit, and the PDC drill bit is divided into a matrix type drill bit and a steel body drill bit, the matrix type drill bit is more complex to process than the steel body drill bit, the crown parts of the two drill bits are made of materials which are different essentially, and the performances of the two drill bits are also greatly different. From the viewpoint of impact resistance and toughness, the steel body drill bit has more advantages in drilling effect, but the cost of the steel body drill bit is lower. The PDC drill bit plays a role of a main wear-resistant tooth in drilling operation, and is also a PDC tooth on the drill bit, so the drill bit with the same type of PDC tooth is more popular due to excellent toughness and erosion resistance of the steel body type drill bit.
In the prior art, a steel body type drill bit generally adopts a machining mode or a sand casting mode to process a drill bit crown part, then a layer of welding flux is overlaid on the surface of the crown part, a matrix hard surface layer on the surface of the drill bit crown part is processed to a specified size through grinding, and finally PDC teeth are welded into tooth sockets. So, the build-up welding process must guarantee to avoid the PDC tooth nest infilling build-up welding material as far as possible, because the PDC tooth that the drill bit crown distributes and the tooth nest more, so in the process of grinding the matrix hard surface layer, work load will be very big. And the reality is that when the build-up welding extremely easily welds the PDC tooth nest edge or inside the matrix hard surface layer, causes subsequent PDC tooth can't braze to the assigned position, must be one by one with the peripheral unnecessary build-up welding material of tooth nest clearly clean.
The grinding and removing process can cause the lengthening of a processing period, consumes time and cost, and can cause the damage to the tooth socket of the original steel body type drill bit again, so that the PDC teeth cannot be firmly welded on the crown part of the drill bit, and can cause the shedding and the failure of the PDC teeth if the PDC teeth are serious. In addition, a hard surface layer of the matrix is gradually welded on the surface of the crown part in a surfacing mode, and in order to ensure that the hard surface layers of the matrix at all parts of the crown part have the same thickness, the crown part of the steel body drill bit is firstly polished, so that surfacing is facilitated and the thickness of the surfacing layer is ensured to be consistent. Thus, the processing period of the drill bit product is prolonged.
The embodiment of the utility model provides a steel body formula drill bit that relates to adopts 3D to print the mode of matrix hard surface layer, welds as an organic whole with matrix hard surface layer and steel body through brazing. Therefore, the process that the crown part of the steel body drill bit needs to be polished in advance due to surfacing is omitted, and meanwhile, the same thickness of the hard surface layer of the tire body of the crown part can be ensured; because its shape and size of matrix hard surface layer shell of printing are fixed, can not fill up the position of PDC tooth nest, avoid the tooth nest because of the secondary damage that leads to the fact of polishing.
Specifically, the embodiment of the utility model provides a split type drill bit comprises steel body drill bit crown steel part base member and matrix hard surface layer, and the matrix hard surface layer is once only printed the shaping through the selective area melting vibration material disk manufacturing technique and obtains, and its steel part base member is then through casting and machining technology machine-shaping, then through brazing, welds as an organic whole with the steel part base member with the hard surface shell that prints.
Therefore, the hard-face welding layer structure with high hardness, good wear resistance and most concentrated stress and pressure bearing can be obtained, and the steel part substrate with high toughness can be obtained. The combination of the two materials can effectively combine the advantages of the two materials, and the obtained product has high performance and long service life, and can be saved to be more specific, the thickness of a hard surface shell of 3D printing is about 2-3 mm, and the position of a tooth socket of a crown part of a drill bit is reserved in the shell.
Additionally, adopt the utility model discloses in the scheme that relates to, can leave out the process that the steel body drill bit crown need polish earlier before welding matrix hard surface layer and the process that matrix hard surface layer need polish matrix hard surface layer to same thickness has been built up welding, has shortened the preparation cycle of drill bit greatly, has reduced manufacturing cost. In addition, the hard surface shell adopting 3D printing can also effectively avoid secondary damage of PDC tooth sockets caused by surfacing, and meanwhile, each part of a welding layer is guaranteed.
In summary, compared with the prior art, the steel body type petroleum drill bit related to the embodiment of the utility model can omit the processes of surfacing and polishing after surfacing, and can avoid the secondary damage of the PDC tooth socket; the thickness of each part of the hard surface layer of the matrix can be ensured to be uniform, the stress of the crown part of the drill bit is ensured to be uniform, and the service life of the drill bit is obviously prolonged.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. 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 invention. Thus, the present invention 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 (8)
1. a steel body oil drill bit, comprising:
A steel base, the steel base comprising: a body structure; a drilling end located on one side of the main structure; a mounting end located on the other side of the main body structure; a blade disposed on the drilling end; a socket on the blade; the main body structure, the drilling end, the mounting end and the blade are integrally formed;
Locate the matrix hard surface layer on the steel base member, the matrix hard surface layer is printed one shot forming by 3D.
2. The steel body oil drill bit of claim 1, wherein the carcass hard face has perforations of the same size as the pockets.
3. The steel body petroleum bit of claim 1 wherein the carcass hard face layer is brazed to the steel substrate.
4. the steel body type oil drill bit as claimed in claim 1, wherein the thickness of the carcass hard surface layer is 1-3 mm.
5. The steel body type oil drill bit according to claim 1, wherein the thickness of the carcass hard surface layer is 2-2.8 mm.
6. The steel body petroleum drill bit of claim 1, wherein the carcass hard face layer comprises: the first hard surface layer is arranged at the drilling end, and the second hard surface layer is arranged on the side wall of the drill bit.
7. The steel body type oil drill bit as claimed in claim 1, wherein the number of the blades is 4-8, and the blades are uniformly distributed on the drilling end.
8. The steel body petroleum drill bit as claimed in claim 7 wherein said blades are specifically 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920607083.9U CN209780766U (en) | 2019-04-29 | 2019-04-29 | Steel body type petroleum drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920607083.9U CN209780766U (en) | 2019-04-29 | 2019-04-29 | Steel body type petroleum drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209780766U true CN209780766U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920607083.9U Active CN209780766U (en) | 2019-04-29 | 2019-04-29 | Steel body type petroleum drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209780766U (en) |
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2019
- 2019-04-29 CN CN201920607083.9U patent/CN209780766U/en active Active
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