About: http://webisa.webdatacommons.org/281766428

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	The fracturing fluid may be preceded by any prefracturing agents, for example, acids, aqueous acids, and other agents which tend to clean the rock face or the formation and permit a more efficient fracturing process.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com