دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: schlumberger wireline tool that measures the density of the formation and also gives short and long spaced photoelectric effect measurements. Can deduce lithology and porosity. A caliper is also given.

n: the absorption of gamma rays that results in ejection of electrons from an atom. Photoelectric effect occurs when light of sufficient energy falls on an atom and causes it to lose electrons. The energy of the light actually tears electrons away from the atoms of a substance.