About: http://webisa.webdatacommons.org/181170094

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 present invention relates to methods and apparatus for completing and maintaining subterranean wells for producing oil, gas and other fluids and minerals from the earth.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com