Well logging chronicles the depths, subsurface formations and events encountered while drilling. Well logs can include visual observations or be made by instruments lowered into the well during ...

Guidance and recommendations for radiation protection and safety in well logging – the study of geological formations penetrated via a borehole – and accelerator-based radioisotope production are ...

Well logging is the practice of recording and analyzing various kinds of data about the rock formations around a borehole during or after drilling. Also called borehole logging, this activity aims to ...

This early journaling system has evolved to encompass lowering logging tools into the wellbore via wireline in order to measure porosity, resistivity, permeability, temperature, water saturation and ...

A mishap by a Russian contractor has triggered concerns of radiation risks in East Siberia’s Irkutsk region after its expedition truck lost a capsule containing Caesium-137 on its way to a well that ...