دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: concentrations of naturally occurring liquid or gaseous hydrocarbons in the earths crust. some part of which are currently or potentially economically extractable. Some categories of resources are (1) from the economic standpoint. economic (recoverable, commercial),marginally economic, and subeconomic;and (2) from the geological standpoint, identified (subdi- vided into measured, indicated, and inferred),and undiscovered.