Unocal Thailand Ltd. has established a lime-free, oil-based drilling fluid system as the best option for drilling wells with high bottomhole temperatures and where invasions of CO 2 and other acidic ...

Mud logging is the real-time “eyes and ears” of the wellbore during drilling—critical for kick detection, formation evaluation at bit time, operational optimization, and regulatory reporting. It ...

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