Open Access

Table 1

Data sources.

Classification Data
Logging information Depth Drilling time record
Formation information Cuttings logging data
Stratigraphic stratification
Drilling information Bit usage Bit usage
Drilling log Drilling performance
Daily BHA
Daily bit
Drilling fluid information Actual measurement of drilling fluid instruments
Usage record of drilling fluid

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.