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| Electrical logs || Measures the electrical properties of the fluid in the rock || Can indicate if hydrocarbons are present or not
| Electrical logs || Measures the electrical properties of the fluid in the rock || Can indicate if hydrocarbons are present or not
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| Density and neutron logs || Measures the formation density and volume of fluids in the rock, respectively || An estimate of porosity can be made; also allows the identification of certain lithologies such as limestone, anhydrite, and halite
| Density and neutron logs || Measures the formation density and volume of fluids in the rock, respectively || An estimate of porosity can be made; also allows the identification of certain lithologies such as limestone, [[anhydrite]], and halite
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| Sonic log || Measures how fast an acoustic signal can pass through a rock || An estimate of porosity can be made; also used for seismic calibration
| Sonic log || Measures how fast an acoustic signal can pass through a rock || An estimate of porosity can be made; also used for seismic calibration