Quantifying Drilling Efficiency and Disruption: Field Data vs. Theoretical Model

摘要

Mechanical and kinematics data at the bit have been collected duirng drilling operations and organized to identify optimal drill- ing efficiency. Transitional conditions towards abnormal behavior have been distinguished. Normal drilling is usually characterized by regular linear relationships between global control variables at the bit, which approximately correspond to an upscaling of a local Mohr-Coulomb-type failure mechanism of the rock.