Wireline logging tools principle and properties :

• Mechanical logs (e.g., calipers).
• Electrical logs (e.g., later logs, induction logs, SP logs).
• Natural radiation logs (e.g., simple and spectral gamma ray logs) Acoustic logs (e.g., sonic logs).
• Pressure and temperature MDT logs Artificial radiation logs (e.g., density and neutron logs).
• Imaging logs (e.g., FMI, USIT, dipmeter and various other types).
• Special logs (e.g., NMR logs).

Cased hole logging tools :

• Casing collar logs.
• CBL/VDL, USIT.
• Contact looging tools.
• Production logging tools.
• Temperature logging tools.

Formation Evaluation :

• Petrophysical rock properties rock fluid interaction capillary pressure, wettability fluid displacement in porous medium.
• Distinguish between reservoir and non-reservoir rock.
• For the reservoir intervals only, distinguish between hydrocarbons and water filling the pores, hence calculate water saturation in reservoir rocks.
• For the hydrocarbon fraction, distinguish between oil and gas, hence calculate gas and oil saturations in reservoir rocks.
• Integration of log derived properties and core derived properties,capillary pressure, saturation.
• Fluid contacts from logs pressure data and special core analysis (SCAL).
• Petrophysical workflow for integrated geological modelling.

Geological Application of wireline logs :

• Environment of deposition sequence analysis and sequence boundaries.
• Overpressure, zone identification.
• Geomechical application of petrophysical data.
• Fractures/faults and unconformity identification.