دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the tools which can shave off the mud cake when the pipe rotates and whose doctor blades can extend toward borehole well under the pump pressure

n: The wall scraper fixed under the casings ectooecium,which be used to clean the wall cake
of hole wall.

n: The wall scraper fixed under the casings ectooecium,which be used to clean the wall cake
of hole wall.