دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: 1. to remove with the bit the residual cement that normally remains in the lower section of casing and the wellbore after the casing has been cemented.2. to remove the settlings and cavings that are plugged inside a hollow fish (such as drill pipe) during a fishing operation.

drilling through the cement after a primary cement job as the hole is deepened.