Sentences with perforation
per·fo·ra·tion
P p - Tear off the form along the perforations and send it to Sales.
- Since the pay zone is sealed off by the production string and cement, perforations must be made in order for oil or gas to flow into the wellbore.Usually several perforations are made in the casing, which allow formation fluids to flow into the wellbore.A perforation is a tunnel created from the casing or liner into the reservoir formation, through which oil or gas is produced.