About: http://webisa.webdatacommons.org/333036946

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Hence, there is a need for new coating/material technologies that are casing-friendly while protecting the drill stem assembly from wear and at the same time lowering contact friction in cased hole drilling conditions.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com