SUBMERSIBLE OIL PRODUCTION RIG MEMBER BODY Russian patent published in 2007 - IPC E21B17/00 C23C30/00

Abstract RU 2293171 C1

FIELD: oil and oil fluid production equipment, particularly submersible centrifugal pumps and electric motors.

SUBSTANCE: oil production rig member comprises cylindrical body made of structural steel with surface coating made by powder spraying. The powder has particle dimensions of 10-63 microns. The powder includes carbon in amount of 1.3-2.0% by weight, molybdenum (4.0-5.0% by weight), silicon (0.5-1.5% by weight), nickel (14.0-20.0% by weight), chrome (23.0-32.0% by weight), boron (0.001-0.1% by weight), manganese (0.4-1.2% by weight), aluminum oxide Al₂O₃ (5-25% by weight) and iron (base) as remainder. Coating thickness is 100-500 microns.

EFFECT: increased corrosion resistance, wear resistance of oil production rig members, improved protection against galvanic corrosion and enhanced coating microhardness.

2 cl, 1 dwg

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RU 2 293 171 C1

Authors

Chujko Aleksandr Georgievich

Dates

2007-02-10—Published

2005-07-28—Filed