Modified surface properties of percussion tools used in downhole drilling
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United States of America Patent
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Apr 24, 2018
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app pub date -
Sep 30, 2015
filing date -
Sep 30, 2015
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Abstract
A system and method of fabricating a percussion tool that includes one or more surfaces modified using the ferritic nitrocarburization process. The percussion tool includes a piston positioned in sliding contact within a casing. The piston includes an inner wall and an outer wall, where the inner wall defines a passageway extending longitudinally therethrough. The outer wall is positioned in close fitting relationship with an internal surface of the casing. One or more surfaces of at least one of the casing's internal surface and/or the piston's outer wall are modified using the ferritic nitrocarburization process.
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