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perforated liner

1. n. [Perforating]

A wellbore tubular in which slots or holes have been made before the string is assembled and run into the wellbore. Perforated liners typically are used in small-diameter wellbores or in sidetracks within the reservoir where there is no need for the liner to be cemented in place, as is required for zonal isolation.

See: liner

Diagram of perforated liner.
Perforated liner.