دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a hole made in the casing, cement, and formation through which formation fluids enter a wellbore. Usually several perforations are made at a time.

n: the hole that the bullete passes through the casing and cement rock , then enters into layer.

a hole made through the casing and cement and into the formation. It has a characteristic entrance hole and penetration. It is the flow path from the formation to the wellbore in a cased and cemented completion.