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 engineering designs, executes, and continuously optimizes the drilling fluid system to control subsurface pressures, stabilize the wellbore, remove cuttings, cool/lubricate the bit and BHA, ...

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.

Drilling costs can be estimated with a combination of established, analytic techniques. This article, concluding a three-part series, presents a general framework to estimate costs with a formalized ...