ABOVE-BIT MOISTURE SEPARATOR Russian patent published in 1994 - IPC

Abstract RU 2017927 C1

FIELD: hole drilling. SUBSTANCE: above-bit moisture separator has centering ribs 9 installed by means of bearings 10 on body 1. Bearings 10 are communicated by means of channels 11 and 12 with chamber 8 and hollow 7 under valve. Chamber 8 from back side of body 1 is communicated through channel 17 with drill string-borehole annulus above ribs 9. EFFECT: higher efficiency. 1 dwg

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RU 2 017 927 C1

Authors

Storozhenko A.M.

Sharafutdinov T.D.

Dates

1994-08-15—Published

1990-12-19—Filed