CN209761343U - PDC drill bit takes precautions against earthquakes - Google Patents

Abstract

The utility model discloses a PDC drill bit takes precautions against earthquakes relates to PDC drill bit technical field, has solved current PDC drill bit under normal operating mode because its self structure does not possess the shock-proof performance with external connection structure, leads to the drill bit to produce vibrations big and the lower technical problem of cutting efficiency. The utility model provides a PDC drill bit takes precautions against earthquakes, including connecting the matrix that sets up and connecting the platform from top to bottom in proper order, the matrix on be provided with the water hole, the inside in water hole is provided with the shower nozzle, be provided with the wing on the matrix, the upper end of wing is provided with a lot of cutting teeth, the below of cutting teeth is provided with a lot of supplementary cutting teeth on the wing, the lower extreme of wing still is provided with a lot of guarantor's footpath tooth, connect and be provided with last spread groove and the lower spread groove that is upper and lower position relation and distributes on the platform, the lower extreme of lower spread groove is provided with supplementary spread groove, supplementary spread groove is the semicircular groove of shape rule, the centre of connecting the platform is provided with the chucking.

Description

PDC drill bit takes precautions against earthquakes

Technical Field

the utility model belongs to the technical field of the PDC drill bit, more specifically relates to a PDC drill bit takes precautions against earthquakes.

Background

PDC bits are short for polycrystalline diamond compact bits. Is a well drilling tool commonly used in the geological drilling industry. In fact, the evolution of the diamond bit is derived from a diamond drill, and a matrix type diamond compact (PDC) bit is a cutting type bit which welds a diamond compact on a bit matrix in a brazing mode. The matrix drill bit is formed by sintering tungsten carbide powder, and the artificial polycrystalline diamond compact is brazed on a tungsten carbide matrix and is diameter-protected by natural diamond. The quality and type of PDC cutters has changed dramatically over the years. The difference is considerable if the teeth of the 80 th century were compared with the teeth of today. Due to the change of the mixing process and the manufacturing process, the quality performance of the current cutting teeth is much better, and the erosion resistance and the impact resistance of the drill bit are greatly improved. Engineers have also optimized the interface between the tungsten carbide substrate and the synthetic diamond to improve the toughness of the cutting teeth. Innovations in the layered diamond process have also been used to improve the abrasion resistance and thermal stability of the product. In addition to advances in materials and manufacturing processes, PDC products have also made significant breakthroughs in tooth design techniques and tooth placement. PDC products have now become available in areas where they have previously not been practical, such as harder, more abrasive and more diverse formations. This expansion into new fields has had a large impact on the balance between diamond (fixed cutter) bits and roller cone bits. Initially, PDC bits could only be used in soft shale formations because hard interbeddes would damage the bit. But with the advent of new technology and changes in construction, PDC bits have now been able to be used to drill hard interbedded and long-section hard rock formations. PDC bits are becoming more and more popular, and this situation is becoming more and more prominent, especially as the quality of PDC teeth continues to improve. As bit designs and teeth improve, the directionality of PDC bits also increases, further diminishing the advantages of roller cone bits in motor drilling in the past. At present, the market that PDC drill bits crowd the roller bit in the drilling application of many stratum every day has become one of the drilling production tools that people are essential to market development in daily life, but it still has some drawbacks on its own structure, such as the situation that the stability is not good appears because the shock resistance is unknown, so can threaten the life of drill bit seriously, also can reduce the cutting production efficiency of drill bit greatly, in this respect of improvement and perfection of its structure, need arouse people's very big concern and attention.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical insufficiency, the utility model provides a PDC drill bit takes precautions against earthquakes has solved current PDC drill bit under normal operating mode because its self structure does not possess the shock-proof ability with external connection structure, leads to the drill bit to produce vibrations big and the lower technical problem of cutting efficiency.

the utility model discloses a realize above-mentioned purpose, specifically adopt following technical scheme:

The utility model provides a PDC drill bit takes precautions against earthquakes, including connecting the matrix that sets up and connecting the platform from top to bottom in proper order, the matrix on be provided with the water hole, the inside in water hole is provided with the shower nozzle, be provided with the wing on the matrix, the upper end of wing is provided with a lot of cutting teeth, the below of cutting teeth is provided with a lot of supplementary cutting teeth on the wing, the lower extreme of wing still is provided with a lot of guarantor's footpath tooth, connect and be provided with last spread groove and the lower spread groove that is upper and lower position relation and distributes on the platform, the lower extreme of lower spread groove is provided with supplementary spread groove, supplementary spread groove is the semicircular groove of shape rule, the centre of connecting the platform is provided with the chucking.

Further, the inclination that is different angles between each cutting tooth and the same plane sets up, and each cutting tooth extends the high diverse of wing, that is to say each cutting tooth all has own unique angle of putting, such structural design can let the various cutting angles of drill bit adaptation different objects, for example irregular object surface under the various environment medium, greatly promoted the stationarity of drill bit at the during operation, furthest has realized the atress homogeneous degree of cutting tooth, and then also greatly promoted the cutting efficiency of drill bit, the shockproof performance of drill bit has also been promoted.

Further, the surface of shower nozzle is full-thread structure, and the first half of shower nozzle is provided with the screw thread, and the latter half of shower nozzle is provided with down the screw thread, and the pitch of lower screw thread equals with the pitch of last screw thread, through the cooperation of being connected of last screw thread and lower screw thread and water hole, has strengthened the stability of shower nozzle in the water hole for the shower nozzle is difficult for dropping at the rotatory in-process of drill bit, has avoided because of the shower nozzle drops the phenomenon that leads to the drill bit to damage and has taken place.

Furthermore, the straight line formed by the arrangement of the gauge teeth and the straight line formed by the arrangement of the auxiliary cutting teeth are parallel to each other in position relation, the gauge teeth and the auxiliary cutting teeth complement each other in cutting of external media during rotation through the structural design, the cutting efficiency and the cutting effect are mutually enhanced, and the shockproof performance of the drill bit is enhanced through more thorough cutting.

Further, the center of matrix is connected with and is the toper enhancement arch, because strengthen protruding setting at the center of matrix and for matrix in the position formed the bulge, such structural design makes to strengthen protruding can the priority touch and wait to dash the drill body along with the common rotation in-process of matrix, make one step of cutting construction operation in advance, avoid appearing the drill bit because of the condition that meets hard object or earth's surface suddenly and produce vibrations, the shock resistance and the effect of drill bit have not only been promoted, the work efficiency of drill bit has also been greatly promoted.

The utility model discloses a theory of operation does:

The utility model discloses when using, we mainly explain its improvement advantage in self structure, realize the theory of operation that the effect that is showing that its self shock resistance performance promotes corresponds. When using, at first people are connected required power device with the connection platform of drill bit, because the setting up of chucking step makes connecting device and the frictional force increase of being connected the platform, both can link together more firmly, connect the first half of platform and set up last spread groove and spread groove down, the lower extreme of spread groove has still set up supplementary spread groove, the connecting device that corresponds can be connected with the drill bit through the limiting displacement of three spread groove more firmly.

Set up a great deal of cutting tooth on the wing on the matrix, supplementary cutting tooth and guarantor's footpath tooth, because the inclination and the high diverse of each cutting tooth, every cutting tooth all has the inclination of equidimension not for same plane, that is to say the utility model discloses each cutting tooth on the drill bit all has own unique angle of putting, such structural design can let the various cutting angles of drill bit adaptation different objects, for example irregular object surface under the various environment medium, greatly promoted the drill bit at the stationarity of during operation, furthest has realized the atress uniform degree of cutting tooth, and then also greatly promoted the cutting efficiency of drill bit, also promoted the shock resistance performance of drill bit.

Under normal operating mode, the drill bit begins to rotate and cuts the drill drift to the medium surface, strengthens the preferential and drill bit contact working surface of lug this moment for strengthen the lug and can carry out the broken operation flow of punching press to harder medium object surface earlier, beat certain basis for next work of drill bit, when having promoted the shock resistance of drill bit, also avoided the drill bit to receive colliding with of hard object to lead to its life impaired, it is above exactly the utility model discloses a theory of operation.

The utility model is compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a be provided with a great deal of cutting teeth on the wing, compare with traditional PDC drill bit, the utility model discloses an inclination of equidimension not all exists for same plane in every cutting tooth, that is to say that the utility model discloses each cutting tooth on the drill bit all has own unique angle of putting, and such structural design can let the drill bit adapt to the various cutting angles of different objects, for example irregular object surface under various environment media, has greatly promoted the drill bit at the stationarity of during operation, has realized the atress uniform degree of cutting tooth to the utmost, and then has also greatly promoted the cutting efficiency of drill bit, has also promoted the shock resistance performance of drill bit.

2. The utility model discloses center department at the matrix has set up the intensive lug, and the intensive lug is outstanding on whole matrix, strengthens the lug and is preferred and drill bit contact work surface when using for strengthen the lug and can carry out the broken operation flow of punching press to harder medium object surface earlier, beat certain basis for next work of drill bit, when having promoted the shock resistance of drill bit, also avoided the drill bit to receive colliding with of hard object and lead to its life impaired.

3. The utility model discloses the straight line that the angle that sets up of the gauge tooth that sets up on the wing and the straight line relation that the angle that sets up of supplementary cutting tooth become are parallel to each other, and such structural design makes gauge tooth and supplementary cutting tooth complement each other to the cutting of external medium when rotatory, each other is for reinforcing cutting efficiency and effect, strengthens the shockproof performance of drill bit through the cutting that can be more thorough.

4. The utility model discloses increased a spread groove for traditional drill bit, made drill bit and equipment's connection become more firm, compact to the lower extreme of spread groove has set up an auxiliary spread groove down, makes the device have gone out more a spacing card effect of dying when being connected with the drill bit, makes the drill bit become more steady under normal operating mode, has strengthened the shock resistance performance of drill bit.

5. The utility model discloses a connect the bench and set up the chucking step, the chucking step has increased one deck frictional force for between the device of drill bit and required connection, has made certain promotion for the stability of drill bit, and simple structure and convenient to use are reasonable.

6. The utility model discloses a shower nozzle surface is full thread structure, through last screw thread and the cooperation of being connected in lower screw thread and water hole, has strengthened the stability of shower nozzle in the water hole for the shower nozzle is difficult for dropping at the rotatory in-process of drill bit, has avoided because of the shower nozzle drops the phenomenon that leads to the drill bit to damage and has taken place.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

Fig. 1 is a schematic structural diagram of the present invention;

Fig. 2 is a schematic diagram of the three-dimensional angle structure of the present invention;

FIG. 3 is an enlarged schematic view of A;

FIG. 4 is a schematic view of the structure of the lower connecting groove;

FIG. 5 is a schematic view of the structure of the head;

Fig. 6 is a schematic sectional structure view of the head.

Reference numerals: 1. the cutting tool comprises a tool body, 2, blades, 3, cutting teeth, 4, a reinforcing lug, 5, gauge protection teeth, 6, an upper connecting groove, 7, a lower connecting groove, 701, an auxiliary connecting groove, 8, a clamping step, 9, a connecting table, 10, auxiliary cutting teeth, 11, a water hole, 12, a spray head, 12-1, upper threads, 12-2 and lower threads.

Detailed Description

all of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The present invention will be described in detail with reference to fig. 1 to 3.

the first embodiment is as follows: as shown in fig. 1 to fig. 6, the example provides a shockproof PDC drill bit, which comprises a carcass 1 and a connecting platform 9 which are connected and arranged up and down in sequence, the tyre body 1 is provided with a water hole 11, a spray head 12 is arranged inside the water hole 11, the tyre body 1 is provided with five blades 2, the upper end of the blade 2 is provided with a plurality of cutting teeth 3, the lower part of the cutting teeth 3 is provided with a plurality of auxiliary cutting teeth 10 on the blade 2, the lower extreme of wing 2 still be provided with many gauge teeth 5, connection platform 9 on be provided with and be the upper connecting groove 6 and the lower connecting groove 7 that upper and lower position relation distributes, the lower extreme of lower connecting groove 7 is provided with supplementary connecting groove 701, supplementary connecting groove 701 is the semicircular groove of shape rule, the centre of connecting platform 10 is provided with chucking step 8, chucking step 8 is the step of two outer face cylinders of different diameters formation crisscross echelonment.

The utility model discloses a theory of operation does:

The utility model discloses when using, we mainly explain its improvement advantage in self structure, realize the theory of operation that the effect that is showing that its self shock resistance performance promotes corresponds. When the drill bit connecting device is used, firstly, people connect a required power device with the connecting table 9 of the drill bit, the friction force between the connecting device and the connecting table 10 is increased due to the arrangement of the clamping step 8, the connecting device and the connecting table can be connected together more tightly, the upper half part of the connecting table 9 is provided with the upper connecting groove 6 and the lower connecting groove 7, the lower end of the connecting groove 7 is also provided with the auxiliary connecting groove 701, and the corresponding connecting device can be connected with the drill bit more tightly through the limiting effect of the three connecting grooves.

Set up a great deal of cutting tooth 3 on the wing 2 on the matrix 1, supplementary cutting tooth 10 and gauge protection tooth 5, because the inclination and the high diverse of each cutting tooth 3, every cutting tooth 3 all has the inclination of equidimension not for same plane, that is to say the utility model discloses each cutting tooth 3 on the drill bit all has own unique angle of putting, such structural design can let the various cutting angles of drill bit adaptation different objects, for example irregular object surface under the various environment medium, has greatly promoted the drill bit stationarity at the during operation, has realized the atress uniform degree of cutting tooth 3 to the at utmost, and then has also greatly promoted the cutting efficiency of drill bit, has also promoted the shockproof performance of drill bit.

under normal operating mode, the drill bit begins to rotate and cuts the drill drift to the medium surface, strengthens lug 4 this moment preferably with drill bit contact work surface for strengthen lug 4 can carry out the broken operation flow of punching press to harder medium object surface earlier, has beaten certain basis for next step work of drill bit, when having promoted the shock resistance of drill bit, also avoided the drill bit to receive colliding with of hard object to lead to its life impaired, it is above exactly the utility model discloses an operating principle.

the second embodiment: as shown in fig. 1 and fig. 2, this embodiment is further optimized on the basis of embodiment 1, and this embodiment focuses on explaining the improved portions compared with embodiment 1, and the same portions are not repeated, the cutting teeth 3 and the same plane are arranged at different inclination angles, and each cutting tooth 3 extends out of the blade 2 at different heights, that is, each cutting tooth 3 has its own unique arrangement angle, such a structural design can make the drill bit adapt to various cutting angles of different objects, such as irregular object surfaces under various environmental media, thereby greatly improving the stability of the drill bit during operation, maximally achieving the stress uniformity of the cutting teeth 3, further greatly improving the cutting efficiency of the drill bit, and also improving the shock resistance of the drill bit.

The third embodiment is as follows: as shown in fig. 5 and 6, the present embodiment is further optimized on the basis of embodiment 1, the present embodiment focuses on explaining the improved portions compared with embodiment 1, the same portions are not repeated, the outer surface of the nozzle 12 is of a full-thread structure, the upper half portion of the nozzle is provided with an upper thread 12-1, the lower half portion of the nozzle is provided with a lower thread 12-2, the thread pitch of the lower thread 12-2 is equal to the thread pitch of the upper thread 12-1, and the stability of the nozzle 12 in the water hole 11 is enhanced through the connection and matching of the upper thread 12-1 and the lower thread 12-2 with the water hole 11, so that the nozzle 12 is not easy to fall off in the process of the rotation of the drill, and the occurrence of the phenomenon that the drill is damaged due to the falling of the nozzle 12.

The fourth embodiment is as follows: as shown in fig. 1 and fig. 2, this embodiment is further optimized based on embodiment 1, and this embodiment focuses on explaining the improvement compared with embodiment 1, and the same points are not repeated, and the position relationship between the straight line formed by the arrangement of gauge teeth 5 and the straight line formed by the arrangement of auxiliary cutting teeth 10 is parallel to each other, so that the gauge teeth 5 and the auxiliary cutting teeth 10 complement each other in cutting of external media during rotation, and enhance the cutting efficiency and effect for each other, thereby enhancing the shockproof performance of the drill bit by cutting more thoroughly.

The fifth embodiment: as shown in fig. 1, the present embodiment is further optimized on the basis of embodiment 1, the present embodiment focuses on explaining the improved parts compared with embodiment 1, the same parts are not repeated, the center of the carcass 1 is connected with a conical reinforcing protrusion 4, because the reinforcing protrusion 4 is disposed at the center of the carcass 1 and forms a protruding part at a position relative to the carcass 1, such a structural design enables the reinforcing protrusion 4 to preferentially touch the main body to be punched in the co-rotation process of the carcass 1, and a previous cutting construction operation is performed, thereby avoiding the occurrence of a situation that the drill bit suddenly encounters a hard object or the ground surface to generate vibration, improving the vibration-proof performance and effect of the drill bit, and greatly improving the working efficiency of the drill bit.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure and claims of this application. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims (5)

1. a shockproof PDC drill bit comprises a carcass (1) and a connecting table (9) which are sequentially connected from top to bottom, and is characterized in that a water hole (11) is formed in the carcass (1), a spray head (12) is arranged inside the water hole (11), blades (2) are arranged on the carcass (1), the number of the blades (2) is five, a plurality of cutting teeth (3) are arranged at the upper ends of the blades (2), a plurality of auxiliary cutting teeth (10) are arranged below the cutting teeth (3) on the blades (2), a plurality of gauge protection teeth (5) are further arranged at the lower ends of the blades (2), an upper connecting groove (6) and a lower connecting groove (7) which are distributed in an up-down position relationship are arranged on the connecting table (9), an auxiliary connecting groove (701) is arranged at the lower end of the lower connecting groove (7), and the auxiliary connecting groove (701) is a semicircular groove with a regular shape, the middle of the connecting table (9) is provided with a clamping step (8), and the clamping step (8) is a step with two outer cylindrical surfaces with different diameters and a staggered step shape.

2. The PDC drill bit against shock of claim 1, wherein each of the cutting teeth (3) is disposed at an inclination angle of different degrees with respect to the same plane, and each of the cutting teeth (3) is extended by a different height from the blade (2).

3. The PDC drill bit of claim 1, wherein the outer surface of the nozzle (12) is a full thread structure, the upper half of the nozzle is provided with an upper thread (12-1), the lower half of the nozzle is provided with a lower thread (12-2), and the pitch of the lower thread (12-2) is equal to the pitch of the upper thread (12-1).

4. A PDC bit against vibration in accordance with claim 1, wherein the gauge teeth (5) are arranged in a line parallel to a line in which the auxiliary cutting teeth (10) are arranged.

5. The shockproof PDC bit of claim 1, wherein the center of the matrix (1) is connected with a conical strengthening lug (4), and the strengthening lug (4) is shaped diamond.