Syllabus
Introduction.
Technical background of well logging measurements. The well log interpretation problem. Electrical logging: spontaneous polarization (SP) curve, resistivity logging, conductively focused current log,inductively focused current log, dielectric logging. Microresistivity devices
Nuclear logging methods: gamma-ray log, spectral gamma-ray log, scattered gamma-ray log, X-ray fluorescence log, neutron logs, pulsed spectral gamma log, nuclear magnetic log. Acoustic logs.
Temperature log.
Magnetic log.
Geophysical measurements applied to borehole geometric parameters determination: inclinometers, caliper log, dipmeter survey. Measurements of physical properties of borehole fluids. Formation productivity evaluation.
Annotation
The course covers the essentials of all commonly used wireline logging methods, from technical background and basics of drilling through principles, data acquisition and interpretation to application of geophysical well logging.
It includes methods analysing the condition of the borehole (inclinometry, caliper) and borehole fluids (thermometry, resistivimetry/conductometry, photometry, flowmetry), electrochemical, resistivity and electromagnetic methods, radioactive methods, sonic logs, borehole imaging and a brief introduction to other downhole geophysical measurements (e.g. fibre-optic technology).