Insulating coupling for drill collars and method of manufacture

Details Insulating coupling for drill collars and method of manufacture Insulating coupling for drill collars and method of manufacture

1985-11-19

1987-06-23

Husar, Cornelius J.

Pipe joints or couplings

With casing, lining or protector

Insulated

285 54, 285333, F16L 1112

Patent

active

046747737

ABSTRACT:
An insulating coupling for drill collars and a method of manufacture thereof are presented wherein the coupling consists of an electrically insulating ceramic coating applied in thickness from 0.002 to 0.006 inch to the threads of the coupling by a detonation gun process and sealed with an epoxy sealer to reduce porosity.

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