دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the operation during the drilling procedure when the cement is drilled out of the casing before further hole is made or completion is attempted.

n: The operation of drilling out of the casing shoe after the cementing of a casing or liner in place. Drilling out of the casing is done before further hole is made or completion attempted.


drilling out set or green cement from the casing before drilling ahead to make a deeper well.