دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: (am) modulation of the amplitude of a radio carrier wave in accordance with the strength of the audio or other signal. amplitudes n pi: shapes and heights of the peaks in a spontaneous potential curve.

n: Schlumberger wireline tool that records a Spontaneous Potential log and three resistivity curves at different depths. Used to deduce true formation resistivity Rt, invasion profiles and quicklook Hydrocarbon detection.

see Spontaneous Potential Log or SP.

n: (SP) see spontaneous potential.

n: see spontaneous potential curve.

abbr: spontaneous potential or selfpotential.

spontaneous potential log.

n: (SP) one of the natural electrical characteristics exhibited by a formation as measured by a logging tool lowered into the wellbore. Also called selfpotential or Sf.

n: (SP) a measurement of the electrical currents that occur in the wellbore when fluids of different salinities are in contact. The SP curve is usually recorded in holes drilled with freshwater- base drilling fluids. It is one of d1e curves on an electric well log. Also called self-potential curve.

n: (SP) the spikes or peaks in the curve on an SP log, measured with respect to a shale baseline.