A Bit-Based Data-Acquisition System for Hard-Rock PDC Bits.

The full-length paper describes the development and use of a bit-based module designed to monitor accelerometer and magnetometer sensors and to record selected data. The authors also describe the effort to infer dynamic dysfunctions from the data in the fast-growing hard-rock polycrystalline-diamond-compact (PDC) -bit application and to mitigate them by modifications to drilling parameters and bit designs. [ABSTRACT FROM AUTHOR]