دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a technique used in directional drilling to deviate the wellbore by washing away the formation in one particular direction.a special bit (badger bit) is used that has one enlarge nozzle that must be orientated towards the intended direction.

n: a special jet bit that has a very large nozzle used to deflect a hole from the vertical. The large nozzle erodes one side of the hole so that the hole is deflected off vertical. A jet deflection bit is especially effective in soft formations.

n: a special jet bit.

n: see jet deflection bit.