Anti-friction centralizer with anti-mud bag and pressurized propulsion function
A technology of centralizer and anti-mud, applied in the direction of drill pipe, casing, drill pipe, etc., can solve the problems of difficult forward movement of the drill bit, large resistance, etc. Install reliable effects
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[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0020] Referring to the accompanying drawings, the anti-friction centralizer with the functions of mud bag prevention and pressurized propulsion proposed by the present invention is composed of a body 1 and a roller assembly. The front and rear ends of the body 1 are connected between downhole drilling tools through threaded buckles. There are evenly distributed ridges on the outer surface of the cylinder of 1, and each ridge is processed with a gap for installing the roller assembly; the roller assembly consists of a roller 2, an alloy tooth a3, a nut 4, and a bolt shaft 5 , oil deflector ring 6, outer wear-resistant sleeve 7, inner wear-resistant sleeve 8 and O-ring 11, first assemble the inner wear-resistant sleeve 8, outer wear-resistant sleeve 7 and roller 2 in sequence, Then install an oil deflector ring 6 in the stepped holes at both ends of th...
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