About: http://webisa.webdatacommons.org/123252485

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	As mentioned previously, drilling fluids contain in addition to the base oil composition conventional components such as clays, water, salts, e.g. chlorides of calcium and sodium, surfactants or emulsifiers and weighting material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk