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Drill bit sliding bearing with textured surface coating

A technology of surface coating and sliding bearings, which is applied in the direction of drill bits, shafts, bearings, bearing components, etc., can solve the problems that the tribological properties of sliding bearings cannot be further improved, and achieve the purpose of increasing service life, improving lubrication status, reducing wear debris and The effect of abrasive particles

Inactive Publication Date: 2018-11-09
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are limited by their own conditions and cannot further improve the tribological properties of sliding bearings.

Method used

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  • Drill bit sliding bearing with textured surface coating
  • Drill bit sliding bearing with textured surface coating
  • Drill bit sliding bearing with textured surface coating

Examples

Experimental program
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Embodiment

[0021] Such as figure 1 , figure 2 As shown, a drill bit sliding bearing with a textured surface coating includes a journal 1, a bearing 4, a wear-resistant coating 2, and a surface texture 3, and a lubricating medium 5 is provided between the bearing 4 and the journal 1 , the inner surface of the bearing 4 is coated with a wear-resistant coating 2 , and a surface texture 3 is provided on the surface of the wear-resistant coating 2 .

[0022] Such as image 3 As shown, the surface texture 3 is circular, the surface texture 3 is evenly distributed along the surface of the wear-resistant coating 2, and the dynamic pressure lubrication performance and friction and wear performance of the surface texture 3 are optimal.

[0023] Such as figure 2 , image 3 As shown, the diameter of the circular surface texture 3 is 320 μm, the area ratio of the circular surface texture 3 is 12%, and the depth of the pits of the circular surface texture 3 is 70 μm.

[0024] Such as figure 2...

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Abstract

The invention discloses a drill bit sliding bearing with a textured surface coating. The drill bit sliding bearing with the textured surface coating comprises a shaft neck, a bearing, an abrasion-resisting coating and a surface texture. The abrasion-resisting coating is applied to the inner surface of the bearing; the surface texture is arranged on the surface of the abrasion-resisting coating; and the surface texture is in a round shape, and is uniformly distributed along the surface of the abrasion-resisting coating. The drill bit sliding bearing with the textured surface coating has the beneficial effects that abrasion resisting property of the sliding bearing can be improved, and the friction auxiliary lubrication anti-friction property can be improved; and working property of the drill bit sliding bearing can be greatly improved, and the service life can be prolonged.

Description

technical field [0001] The invention belongs to the field of oil drilling equipment, in particular to a drill bit sliding bearing with textured surface coating. Background technique [0002] The drill bit is the main rock-breaking tool in the field of oil and gas development. The service life of the drill bit directly affects the efficiency and economic cost of oil and gas development. As one of the main parts of the drill bit, the sliding bearing of the drill bit, the working performance of the sliding bearing is the main factor affecting the working performance and service life of the drill bit. The main failure modes of sliding bearings are bearing fracture, abrasive wear, adhesive wear, etc., among which abrasive wear failure and adhesive wear failure occupy the main part. At present, the methods used to improve the service life of the sliding bearing of the drill bit include optimizing the structure of the sliding bearing, selecting a suitable bearing material, and add...

Claims

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Application Information

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IPC IPC(8): F16C33/04E21B10/22
CPCE21B10/22F16C33/043
Inventor 何霞曾维菊王党飞王国荣钟林
Owner SOUTHWEST PETROLEUM UNIV