Curve saturation

Curve saturation occurs with dipmeters and resistivity imaging devices when they attempt to gather data beyond the range of the device.  This range is a function of mud to formation resistivity and maximum mud resistivity.  Resistivity saturation will occur within resistive formations including hydrocarbon charged sections and rock types such a carbonates and evaporites.  It is often difficult or impossible to discern features within such sections.  A saturated image, however, through a known resistive mass (e.g. carbonate nodule) is a useful check on image polarity.


See also image polarity.



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