Advances in sampling and analytical techniques now permit the isotopic analysis of very small amounts of hydrocarbon gases in air that are collected from the circulating mud stream during drilling. A ...

Mud logging is the real-time surface monitoring and interpretation of cuttings, drilling parameters, and mud gas to support safe, efficient drilling and formation evaluation during well construction.

At-a-Glance: Robust mud logging hinges on accurate lag modeling, disciplined sample handling, calibrated gas systems, and real-time correlation with drilling ...

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 ...