About: http://webisa.webdatacommons.org/73586665

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	FIG. 1C shows a schematic cross-sectional view of a drilling assembly according to the present invention including three casing sections and a rotary drill bit;
http://www.w3.org/ns/prov#wasQuotedFrom	google.com