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Underground components with amorphous coating

An amorphous, coating technology that can be used in coatings, metal material coating processes, layered products, etc., to solve problems such as weakening and catastrophic failure of drill pipes

Inactive Publication Date: 2017-02-22
LIQUIDMETAL COATINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods can introduce additional risks, which include catastrophic failure of the drill pipe, such as when the downhole gripper separates from the drill pipe, undesirable metallurgical changes to the base material of the drill pipe caused by welding or fusion processes (e.g. due to weakening caused by thermal effects and / or weakening of the corrosion-resistant layer on the inner surface of the drill pipe) and delamination of the thermally sprayed crystalline coating under stress caused by a large number of rotations of the drill pipe

Method used

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  • Underground components with amorphous coating
  • Underground components with amorphous coating
  • Underground components with amorphous coating

Examples

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Embodiment Construction

[0057] The disclosure herein may be useful in improving protection and wear resistance of subterranean service components, such as drill pipe or production tubing, without increasing the risk of component failure.

[0058] According to an embodiment, at least a portion of a component (e.g., drill pipe, production tubing) for subterranean use may be thermally sprayed with a coating having a high elastic strain limit that exceeds the strain of the component in subsurface use (e.g., drilling down the drill pipe) through the bending of the drill pipe). The portion thermally sprayed with the coating may include a portion of a component that may come into direct contact (such as the midsection of a drill pipe), or may scrape subterranean structures. The coating can include an amorphous metal alloy. The coating may comprise an at least partially amorphous, non-crystalline, disordered atomic scale structure. The coating may have a higher hardness than the surface of the component on...

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Abstract

Disclosed herein is a method comprising: spraying a coating onto a surface of a component, wherein the coating is at least partially amorphous, wherein the coating is configured to protect the component for underground use. Disclosed herein is a component so coated. The coating may have an elastic strain limit greater than a yield strain of the component. The coating may have a modulus of elasticity lower than a modulus of elasticity of the component. The coating may have a hardness higher than a hardness of the surface. A coefficient of friction between the coating and steel may be lower than a coefficient of friction between steel and steel.

Description

[0001] related application [0002] This application claims the benefit of priority to US Provisional Patent Application No. 61 / 986,288, filed April 30, 2014, the disclosure of which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates to assemblies suitable for subterranean use, such as drill pipe for oil and gas recovery drilling, and methods of making such assemblies. Background technique [0004] Components intended for underground use face challenging environments such as high pressure, chemical corrosion and physical erosion. These components are useful or even necessary in applications such as oil and gas recovery, tunnel construction and substructure foundation construction. [0005] For example, drilling for oil and gas recovery may involve the use of drill pipes, which are connected to each other in a drill string and equipped with drill bits at the ends. The drill string provides torque, force and circulati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00
CPCB32B15/011C22C45/00C22C45/02C23C4/067C23C24/04
Inventor J·康C·P·金H·杰克逊L·安德伍德
Owner LIQUIDMETAL COATINGS
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