Expandable liner hanger deployed

摘要

Downhole expandable technology took a big step forward in January 2007 with the first-ever expansion and setting of an expandable liner hanger in a casing-directional-drilling (CDD) well in the Norwegian sector of the North Sea.The operation used READ Well Services' Hydraulic Expandable Tubular System (HETS),the only system for expanding concentric downhole tubulars using direct hydraulic pressure,Fig.1.