METHOD FOR MANUFACTURING DRILLING COLUMN ELECTRIC SEPARATOR Russian patent published in 2005 - IPC

FIELD: well drilling technologies.

SUBSTANCE: method includes cutting a special conic thread, which is made with triangular profile with rounded corners, at sleeve and nipple portions of electric separator, sand-stream treatment is performed and also grease is removed from parts screwed together. After that a sub-layer is applied to increase adhesive metal properties. Composition dielectric material is applied to threaded connection of nipple portion, after that thread shape is altered by this material, then adhesive is applied to screwed surfaces of threads and sleeve and nipple portions of electric separator are screwed together. After that a layer of dielectric substance is applied along outer surface of subs. Inside the electric separator a dielectric insert is mounted or dielectric film is applied by pressing method with use of press-form. Dielectric film is applied on outer surface of electric separator by forming method under pressure with use of press-form or of composition dielectric material by winding method.

EFFECT: higher durability and reliability.

1 dwg, 1 ex