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Fractal design method for diamond particle distribution on diamond bit

A technology of diamond particles and diamond bits, which is applied in the direction of drill bits, drilling equipment, earthwork drilling, etc., can solve the problems of obvious homogeneity and single type, and achieve the effect of simple design principle, convenient operation and reduced cost of drill bits

Inactive Publication Date: 2011-02-16
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fractal design method for the diamond particle distribution of a diamond drill bit, which is used to solve the problems of obvious isotropy and single type in the existing diamond drill bit diamond particle structure design method

Method used

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  • Fractal design method for diamond particle distribution on diamond bit
  • Fractal design method for diamond particle distribution on diamond bit
  • Fractal design method for diamond particle distribution on diamond bit

Examples

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Effect test

Embodiment 1

[0016] Such as figure 1 As shown, the fractal design method of the diamond particle distribution of this diamond drill bit is composed of 6 diamond particle distribution rings with the same diameter in continuous arrangement with the initial value of the third order, and the first-order diamond particle fractal distribution ring of the third-order diamond particle fractal distribution It consists of 6 diamond particles in the form of inner and outer layers. There is one diamond particle in the inner layer and 5 diamond particles in the outer layer. The diamond particle in the inner layer is the center, and the 5 diamond particles in the outer layer surround the diamond in the inner layer. Particles; the second-order diamond particle fractal distribution ring has a total of 30 diamond particles, and the second-order diamond particle fractal distribution ring is centered on the fractal distribution ring composed of six diamond particles of the first order, and is centered on the ...

Embodiment 2

[0019] Such as figure 2 As shown, the difference between the fractal design method of the diamond particle distribution of this diamond bit and that provided in Example 1 is that the first order of the present embodiment is six diamond particles with different particle sizes, and its rule is that of R1 and R2. The deviation is ΔR1, the deviation between R2 and R3 is ΔR2, the deviation between R3 and R4 is ΔR3, the deviation between R4 and R5 is ΔR4, the deviation between R5 and R6 is ΔR5, and the deviation is ΔR1>ΔR2>ΔR3>ΔR4>ΔR5 , that is to say, the one in the center is the largest, and the five in the periphery gradually decrease, and the range of reduction becomes smaller as the meter increases, that is, the particle size becomes closer and closer. Since the six diamond particles in the most basic constituent unit are unequal in diameter, the corresponding six diamond particles in each sub-fractal distribution ring in the second and third order are all unequal in diameter....

Embodiment 3

[0021] Such as image 3 As shown, the difference between the fractal design method of this diamond bit diamond grain distribution and embodiment 1 is that: this example is made up of 7 equal-diameter diamond grain distribution rings with the initial value of the 3rd order, and each Diamond particles share in the fractal distribution ring of diamond particles, that is to say, the first-order diamond particles constitute the unit of the fractal distribution ring of this order, and also the unit of the second-order and third-order fractal distribution rings.

[0022] Due to the sharing of diamond particles, the distribution of diamonds in the crown of the drill bit is very compact and regular.

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Abstract

The invention relates to a fractal design method for the diamond particle distribution on a diamond bit, belonging to the method for diamond particle size, quantity and distribution on the diamond bit applied to petroleum engineering. In the fractal design method for the diamond particle distribution on the diamond bit, the diamond bit is composed of N(N=2-9)-order continuously arranged diamond particle distribution rings with equal or equal diameters, and the initial value of the diamond particle distribution rings on each order is M (M =3-15). The arrangement principle is as follows: the first-order of the diamond particle fractal distribution rings is composed of M diamond particles arranged in an inner layer and an outer layer, the diamond particles in the inner layer are taken as centers, and the diamond particles in the outer layer surround the diamond particles in the inner layer; the second-order of the diamond particle fractal distribution rings takes the first-order of the diamond particle fractal distribution rings as the center, and is formed by taking the constitution form of the first-order of the diamond particle fractal distribution rings as subunits, and the subunits surround the first-order of the diamond particle fractal distribution rings in the inner layer; and the rest can be done in the same manner. Through the reasonable distribution of the diamond particles on the crown of the diamond bit, the cost of the diamond bit is lowered.

Description

1. Technical field: [0001] The present invention relates to a method for diamond particle size, quantity and distribution of diamond bits used in fields such as petroleum engineering and mining engineering, and specifically relates to a fractal design method for diamond particle distribution of diamond bits. 2. Background technology: [0002] Rotary drilling is the most important drilling technology in current oil drilling, and the drill bit is the basic tool for breaking rock. Due to the good mechanical penetration rate of diamond drill bits in hard to medium hard formations, diamond drill bits have become one of the three most commonly used drill bits in current drilling engineering. The optimized design of diamond drill bits is of great significance for drilling engineering to improve drilling efficiency, drilling quality and reduce costs. [0003] Before the present invention was made, the method for designing the diamond particles of the diamond drill bit too small, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/46
Inventor 李玮闫铁毕雪亮梁颖
Owner NORTHEAST GASOLINEEUM UNIV
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