General Logging knowledge

Logging Theory and Method:
1. electromagnetic logging: resistivity logging, dielectric logging, natural potential logging, excitation polarization potential logging, Magnetic Logging, and magnetic susceptibility logging.
2. Sonic Logging
3. Nuclear Logging

Natural potential curve: because of the different salt concentrations in the groundwater solution, and the adsorption capacity of ions varies with different lithology strata. The natural potential measurement results can be used to determine the lithology and determine the salt concentration of the formation water.
Micro-electrode curve: used to divide the permeability formation and determine the formation interface. Generally, the formation with weei 20CM thickness can be divided. when conditions are good, the formation with 10CM can be divided, therefore, it is an important method to divide the effective thickness of the oil and gas layers when the micro-electrode curve is used.
Induction curve: obtains the resistivity of the formation.