The Progressing Cavity Pump (PCP) is a great innovation for the whole industry, particularly in petroleum production. Since 1980, Progressing Cavity Pumps have been widely used in the production of heavy oil well containing sand and gas. The aim of this new edition is to provide clear related and condensed information about the principles of the Progressing Cavity Pump, including the use of recent material technologies to manufactuer pump stators, the drive rods and driving head, particularly with permanent magnet motors and advanced control and well monitoring, with downhole and surface sensors to control and monitor the pumping system.