About: http://webisa.webdatacommons.org/193048670

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	This invention relates generally to methods and apparatus for removing downhole debris such as sand, liquid such as caustic or heavy water, sludge, fish, balls, plugs and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr