دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a neutron having an energy level of 0.02 to 100 electron volts.

n: a special neutron log used mainly in air- or gas-drilled holes to help determine formation porosity. An epithermal neutron log detects epithermal neutrons, which are neutrons released at energy levels higher than those released in normal neutron logging.

n: a kinds of logging method that thermal neutron captures the cross section.

n: a device in which a neutron source and a detector are in a pad using the same hardware as the density log. The pad is pushed against the side of the borehole wall. The log measures porosity.

n: neutron having an average energy level at room temperature of 0.025 electron volts.

n: the number of thermal neutrons around the neutron logging tool. The number of capture gamma rays present at any time is directly proportional to the thermal neutron population.