Threaded tubular connection provided with a metallic coating on the threading and on the sealing surface

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United States of America Patent

PATENT NO 11124733
APP PUB NO 20180171261A1
SERIAL NO

15565263

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A threaded tubular connection for drilling or operating hydrocarbon wells contains a portion of a tubular element with a male end having an axis of revolution and provided with a first threading extending about the axis of revolution, the male end portion being complementary with a portion of a tubular element with a female end having an axis of revolution and provided with a second threading extending about the axis of revolution, the male and female end portions being capable of being connected by makeup, each of the male and female end portions further comprising a sealing surface with a metal-metal interference, wherein the threading and the sealing surfaces of the male and female end portions are coated with a metallic anti-corrosion and anti-galling layer wherein zinc (Zn) is the major element by weight. One of the metallic anti-corrosion and anti-galling layers is coated with a passivation layer and the other is at least partially coated with a lubricant layer.

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL CORPORATIONCHIYODA-KU TOKYO 100-8071

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Baudin, Nicolas Valenciennes, FR 7 40
Jaafar, Adil Aulnoye-Aymeries, FR 9 10
Verleene, Arnaud Saint-Saulve, FR 18 51
Vogt, Cedric Lille, FR 3 8

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