Frontier Oil Tools Product Catalog

Drill Collar

Overview

The section of the bottomhole assembly (BHA) that provides the most weight on bit is the drill collar. This component of the BHA is thick walled pipe and is the heaviest section of the drill string. Depending on the formation and depth that is being drilled, multiple Drill Collars can be threaded together to increase the weight on bit. This weight on bit is one factor that ensures the rate of penetration is at the driller's desired level.