دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a downhole motor that rotates a bit by the action of the drilling mud on turbine blades built into the tool. When a turbodrill is used, rotary motion is imparted only at the bit;therefore, it is unnecessary to rotate the drill stem. Although straight holes can be drilled with the tool, it is used most often in directional drilling.

n: The dynamic drill that driving the turbine turn by drill fluid.