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Arc-shaped tooth one-cone drill bit with natural diamond particles embedded on surface

A technology of diamond particles and arc-shaped teeth, which is applied in the direction of drill bits, drilling equipment, earthwork drilling and mining, etc., can solve the problems of easy early wear, non-wear-resistant teeth, low ROP and life of single-cone bits, and achieve improvement Wear resistance, the effect of improving rock breaking efficiency

Inactive Publication Date: 2017-10-17
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently used single-cone bit tooth types include conical spherical teeth, wedge-shaped teeth, spoon-shaped teeth and flat-headed teeth. In hard formations and highly abrasive formations, the teeth are not wear-resistant, especially the teeth at the top of the cone and the well. The bottom rock is in permanent contact and is prone to premature wear, resulting in a lower average ROP and life of the single cone bit in hard formations and highly abrasive formations

Method used

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  • Arc-shaped tooth one-cone drill bit with natural diamond particles embedded on surface
  • Arc-shaped tooth one-cone drill bit with natural diamond particles embedded on surface
  • Arc-shaped tooth one-cone drill bit with natural diamond particles embedded on surface

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing, protection scope of the present invention is not limited to the following:

[0016] Such as figure 1 , 2 Shown, a kind of curved-tooth single-cone drill bit with natural diamond particles on the surface, it includes tooth claw 1 and spherical cone 2, and said spherical cone 2 is equidistantly distributed with toothed belts 3, and on the spherical cone 2 2. The toothed belt 3 at the top is interlaced with long arc teeth 5 and short arc teeth 6. The surfaces of the long arc teeth 5 and short arc teeth 6 are inlaid with natural diamond particles 7. The long arc teeth 5 and the height of the exposed tooth of the short arc tooth 6 plus the height of the exposed tooth of the natural diamond particle 7 is the same as the height of the exposed tooth of the PDC tooth 4, the end faces of the long arc tooth 5 and the short arc tooth 6 are rectangular, and the long arc tooth 5 and the ...

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Abstract

The invention discloses a curved-tooth single-cone drill bit with natural diamond particles on the surface, which comprises tooth claws (1) and spherical cones (2), and toothed belts ( 3), long arc teeth (5) and short arc teeth (6) are alternately inlaid on the cloth tooth belt (3) on the top of the spherical cone (2), and the long arc teeth (5) and short The surface of the curved tooth (6) is inlaid with natural diamond particles (7), the end faces of the long curved tooth (5) and the short curved tooth (6) are rectangular, and the long curved tooth (5) and the short curved tooth The base body of the teeth (6) is made of hard alloy material; PDC teeth (4) are staggered and welded on the remaining toothed belt (3). The beneficial effect of the present invention is that the wear resistance of the teeth of the head of the single-cone bit is effectively improved, the rock-breaking efficiency of the bit and the life of the cutting teeth are improved, and it is more suitable for hard formations.

Description

technical field [0001] The invention relates to a single-cone drill bit for slim hole drilling in hard formations in fields such as oil and gas exploitation, and in particular to a curved-tooth single-cone drill bit with natural diamond particles embedded on the surface. Background technique [0002] The single-cone bit is a new type of bit between the tricone bit and the PDC bit. It not only has the advantages of both, but also makes up for the shortcomings of the two. It can especially show its unique advantages in drilling deep wells and small-sized wells with downhole dynamic drilling tools. It is a new variety worth developing in oil drilling bits, especially playing an important role in deep and ultra-deep wells. . Currently used single-cone bit tooth types include conical spherical teeth, wedge-shaped teeth, spoon-shaped teeth and flat-headed teeth. In hard formations and highly abrasive formations, the teeth are not wear-resistant, especially the teeth at the top of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/52
CPCE21B10/52
Inventor 梁政孔春岩张德荣常十梨
Owner SOUTHWEST PETROLEUM UNIV
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