PDC Bit In Oilfield Drilling Rigs Complete Design Guide
PDC Drilling bit has been used extensively and successfully over a wide range of formation types. The lack of rotating parts leads to greater life expectancy and as such long bit runs are achievable with resultant time and cost savings (check also drilling cost per foot). A thorough review of the economics of running a PDC bit needs to be performed prior to bit selection due to its increased cost.

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PDC
https://www.drillingmanual.com/pdc-drilling-bit-design-guide-components/