Logs from wells in a Sinai, Egypt, oil field provide a comparison between the use of thermal decay time (TDT) and cased-hole formation resistivity (CHFR) techniques for monitoring reservoir water ...
Dipmeters are micro-resistivity logs that detect the orientations of bed boundaries and borehole elongations. Borehole-imaging logs provide video, density, gamma-ray, acoustic and/or electrical images ...
LWD acquires formation evaluation and wellbore data in real time while the bit is cutting rock. Sensors housed in drill collars measure gamma ray, resistivity, density, neutron porosity, sonic, NMR, ...