Log Type Log Name Curve Characteristics Interpretation Lithology Logs Gamma Ray & Spontaneous Potential (SP) Deflection to the right Shale Deflection to the left Sand Resistivity Logs Deep Resistivity High Hydrocarbons Tight Streaks Low porosity Low Shale Wet Sand Separation between the resistivities Formation and drilling fluids are different Formation is permeable Porosity Logs Density … Continue reading Short Cut Interpretation
Tag: SP Log
Spontaneous Potential (SP)
Spontaneous Potential (SP) This is a record of the direct current voltage differences between the naturally occurring potential maintained by a movable electrode in the borehole and a fixed potential located at the surface. The potential is as a result in the difference between the salinity of the drilling and formation fluid. The SP log … Continue reading Spontaneous Potential (SP)