Main options used worldwide for cased hole FE:
1.Neutron logs, thermal & epithermal, ( Neutron logs, thermal & epithermal,(porosity,gas porosity,gas) )
2.Sigma from pulsed neutron tools (oil/gas) Sigma from pulsed neutron tools (oil/gas)
3.Carbon Oxygen logs from pulsed neutron tools (oil) Carbon Oxygen logs from pulsed neutron tools (oil)
4.Cased hole sonic (gas, porosity, geophysics, Cased hole sonic (gas, porosity, geophysics,
geomechanics geomechanics) )
5.Cased hole Cased hole resistivity resistivity (oil/gas) (oil/gas)
6.Cased hole density (gas, porosity, geophysics, Cased hole density (gas, porosity, geophysics,
geomechanics geomechanics) )
7.Lithology Lithology in conjunction with above options in conjunction with above options
8.Take pressures and samples Take pressures and samples
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