CN220015059U

CN220015059U - PDC drill bit for petroleum drilling

Info

Publication number: CN220015059U
Application number: CN202320077111.7U
Authority: CN
Inventors: 张凯; 李丹丹; 陈兆龙
Original assignee: Shenzhen Mobei Energy Technology Co ltd
Current assignee: Shenzhen Mobei Energy Technology Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-11-14
Anticipated expiration: 2033-01-10

Abstract

The utility model discloses a PDC drill bit for petroleum drilling, which comprises: the novel drilling machine comprises a main drill body, main blades and a connecting part, wherein the main blades are uniformly and fixedly connected to the main drill body, one side of each main blade is provided with a main diversion trench, one side of each main blade is provided with a plurality of auxiliary diversion trenches, the auxiliary diversion trenches are communicated with the main diversion trenches, the connecting part and the inside of the main drill body are respectively provided with a communication hole, a boss is arranged in the communication hole in the connecting part, a liquid injection hole penetrating through the connecting part is formed in the boss, the outlet of the liquid injection hole is opposite to the main diversion trench, the edge of the top of the boss is rotationally provided with a rotary drum, the inner wall of the rotary drum is provided with spiral blades, and the bottom side of the inner wall of the rotary drum is fixedly provided with a baffle ring, and a notch which is one third of the circumference of the baffle ring is formed.

Description

PDC drill bit for petroleum drilling

Technical Field

The utility model relates to the technical field of PDC drill bits, in particular to a PDC drill bit for petroleum drilling.

Background

With the development of drilling technology and technique, PDC drill bit is widely used in petroleum drilling engineering worldwide, and has the characteristics of simple structure, quick drilling speed, long single drill bit footage, reduced tripping and the like.

Through search, publication number: the patent document of CN 217925732U discloses a six-blade PDC drill bit for petroleum drilling, which is characterized in that a second main diversion trench is formed at one side of three main blades, and a plurality of second auxiliary diversion trenches communicated with the second main diversion trench are formed, so that the liquid injected by the water spraying holes is conducted, the second main diversion trench is conducted to a second cambered surface and enters the inside of the plurality of second auxiliary diversion trenches, meanwhile, a first main diversion trench is formed at one side of three auxiliary blades, and a plurality of first auxiliary diversion trenches communicated with the first main diversion trench are formed, so that the liquid injected by the water spraying holes is conducted, the first main diversion trench is conducted to a first cambered surface and enters the inside of the plurality of first auxiliary diversion trenches, the mud packet generated by the PDC drill bit in the working process is washed along the gap of each drilling tooth, and the surface of the drill bit is kept smooth due to the flowing of the liquid, so that the mud packet phenomenon is reduced.

However, when the liquid is dispersed into the six liquid injection holes through the communication holes, water pressure is dispersed, so that although the surface of the drill bit is kept smooth due to the flowing of the liquid, the phenomenon of balling is reduced, but the liquid pressure is smaller, and the impact force can not wash the inside of the gaps of the drill teeth clean, so that a variable diameter drill bit for petroleum drilling is provided, and the variable diameter drill bit is used for solving the problems.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a PDC drill bit for petroleum drilling, which aims to solve the problems.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: a PDC drill bit for petroleum drilling, comprising: main drill body, main wing and connecting portion, main wing is provided with three altogether, and its even fixed connection is on the main drill body, main guiding gutter has been seted up to one side of main wing to a plurality of vice guiding gutter have been seted up to one side of main wing, and vice guiding gutter is linked together with leading guiding gutter, the connecting portion has all been seted up the intercommunicating pore with the inside of the main drill body, the intercommunicating pore inside in the connecting portion is provided with the boss, the notes liquid hole of through-connection has been seted up on the boss to the export of notes liquid hole is just to leading guiding gutter, boss top edge rotation is provided with the rotary drum, the inner wall of rotary drum is provided with the spiral leaf, rotary drum inner wall bottom side is fixed with the baffle, set up the breach rather than circumference third on the baffle.

Preferably, a plurality of PDC teeth are arranged on one side of the main blade, and the positions of the PDC teeth and the positions of the auxiliary diversion trenches are staggered.

Preferably, the bottom of the main drill body is fixed at the top of the connecting part, and an annular cambered surface is formed at the top of the connecting part.

Preferably, three auxiliary blades may be disposed at intervals of three main blades.

Preferably, the auxiliary blade is provided with corresponding auxiliary diversion trenches, main diversion trenches and liquid injection holes.

Advantageous effects

The utility model provides a PDC drill bit for petroleum drilling. The beneficial effects are as follows:

this PDC drill bit for oil drilling, through the inside spiral leaf that strikes of flowing of intercommunicating pore, thereby can drive the rotary drum and rotate the fender ring that drives and be connected with the rotary drum and rotate, owing to offered on the fender ring rather than circumference third's breach so only can spill one notes liquid hole in fender ring rotation in-process, can effectively reduce the liquid pressure dispersion, guarantee that there is sufficient impact force in the outflow of liquid.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic view of the structure of the inside of the connecting part of the present utility model.

In the figure: 1. the main drill body 2, the main blade 3, the connecting part 4, the main diversion trench 5, the auxiliary diversion trench 6, the communication hole 7, the boss 8, the liquid injection hole 9, the rotary drum 10, the spiral blade 11, the baffle ring 12, the PDC teeth 13 and the annular cambered surface.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, the present utility model provides a technical solution: a PDC drill bit for petroleum drilling, comprising: the main drill body 1, the main cutter wing 2 and the connecting part 3, the connecting part 3 and the inside of the main drill body 1 are provided with communication holes 6, the inside of each communication hole in the connecting part 3 is provided with a boss 7, the boss 7 is provided with a liquid injection hole 8 penetrating through the connecting part, the outlet of each liquid injection hole 8 faces the corresponding main guide groove 4, the edge of the top of the boss 7 is rotationally provided with a rotary drum 9, the inner wall of the rotary drum 9 is provided with a spiral blade 10, the bottom side of the inner wall of the rotary drum 9 is fixedly provided with a baffle ring 11, the baffle ring 11 is provided with a notch which is one third of the circumference of the baffle ring, the main cutter wing 2 is provided with three, and is uniformly and fixedly connected to the main drill body 1, one side of the main cutter wing 2 is provided with the main guide groove 4, one side of the main cutter wing 2 is provided with a plurality of auxiliary guide grooves 5, the auxiliary guide grooves 5 are communicated with the main guide grooves 4, one side of the main cutter wing 2 is provided with a plurality of PDC teeth 12, and the positions of the PDC teeth 12 are staggered with the auxiliary guide grooves 5;

when the oil field is drilled, liquid is injected through the communication hole 6, the liquid is conducted to the main diversion trench 4 through the liquid injection hole 8, and is conducted to the inside of the auxiliary diversion trench 5 through the main diversion trench 4, so that the appearance of the main blade 2 and gaps of the PDC teeth 12 are subjected to uninterrupted flushing of the liquid, the occurrence of the balling phenomenon is reduced, the spiral blade is impacted when the liquid flows through the inside of the communication hole 6, the rotary drum can be driven to rotate so as to drive the baffle ring 11 connected with the rotary drum to rotate, and as the baffle ring 11 is provided with a notch which is one third of the circumference of the baffle ring, only one liquid injection hole can be leaked in the rotation process of the baffle ring 11, the liquid pressure dispersion can be effectively reduced, the enough impact force is ensured when the liquid flows out, and three liquid injection Kong Xunhuan are leaked, so that the condition that a certain main blade is not flushed can not occur.

The bottom of the main drill body 1 is fixed at the top of the connecting part 3, an annular cambered surface 13 is arranged at the top of the connecting part 3, and the outlet of the liquid injection hole 8 is positioned on the annular cambered surface 13.

In one embodiment, three auxiliary blades can be arranged in the interval section of the three main blades 2, and corresponding auxiliary diversion trenches 5, main diversion trenches 4 and liquid injection holes 8 are required to be arranged at the same time of arranging the auxiliary blades.

In an embodiment, leading chute and vice guiding gutter all set up in the inside of main blade with the form of hole, and leading chute's bottom is linked together with the export of annotating the liquid hole, and leading chute's export sets up in the position between two PDC teeth 12, so can further protection annotate liquid water pressure, can conveniently wash away the inside attached silt of PDC tooth gap, reduces the appearance of balling-up phenomenon.

It is noted that 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. Moreover, 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.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a PDC drill bit for oil drilling, includes main body (1), main blade (2) and connecting portion (3), its characterized in that: the utility model discloses a novel drilling machine, including main sword wing (2), main sword wing (2) and main sword wing (1), and its even fixed connection is on main boring body (1), main guiding gutter (4) have been seted up to one side of main sword wing (2) to a plurality of vice guiding gutter (5) have been seted up to one side of main sword wing (2), and vice guiding gutter (5) are linked together with leading guiding gutter (4), connecting hole (6) have all been seted up to inside of connecting portion (3) and main boring body (1), inside boss (7) that are provided with of connecting portion, set up on boss (7) through connection's annotate liquid hole (8) to the export of annotating liquid hole (8) is just leading gutter (4), boss (7) top edge rotation is provided with rotary drum (9), the inner wall of rotary drum (9) is provided with spiral leaf (10), rotary drum (9) inner wall bottom side is fixed with baffle ring (11), set up on baffle ring (11) rather than circumference third's breach.

2. The PDC bit for petroleum drilling of claim 1 wherein: a plurality of PDC teeth (12) are arranged on one side of the main blade (2), and the positions of the PDC teeth (12) and the positions of the auxiliary diversion trenches (5) are staggered.

3. The PDC bit for petroleum drilling of claim 1 wherein: the bottom of the main drill body (1) is fixed at the top of the connecting part (3), and an annular cambered surface (13) is formed at the top of the connecting part (3).

4. The PDC bit for petroleum drilling of claim 1 wherein: three auxiliary blades can be arranged in the interval of the three main blades (2).

5. The PDC bit for petroleum drilling of claim 4 wherein: the auxiliary blade is provided with corresponding auxiliary diversion trenches (5), main diversion trenches (4) and liquid injection holes (8).