Functionally gradient composite article

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United States of America Patent

PATENT NO 9631138
APP PUB NO 20150065401A1
SERIAL NO

14538427

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Abstract

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A composite downhole article is disclosed. The article is selectively corrodible in a wellbore fluid. The article includes at least one corrodible core member comprising a metallic first material that is corrodible in a wellbore fluid at a first corrosion rate. The article also includes at least one outer member disposed on the core member and comprising a second material that is corrodible in the wellbore fluid at a second corrosion rate, wherein the corrodible core member has a composition gradient or a density gradient, or a combination thereof, and wherein the first corrosion rate is substantially greater than the second corrosion rate.

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Patent Owner(s)

  • BAKER HUGHES INCORPORATED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Johnson, Michael Katy, US 183 3788
Xu, Zhiyue Cypress, US 173 4366

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