About: http://webisa.webdatacommons.org/223013062

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	Basically, oil well cementing is a process of mixing a cement-water slurry and pumping it down through steel casing to critical points located in the annulus around the casing in the open hole below, or in fractured formations.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com