The non-contextual content of a WITSML bottom hole assembly run object. This represents a foreign key to the tubular (assembly) that was utilized in this run. Date and time that activities started. Date and time that activities stopped. Start on bottom - date and time. Start off bottom - date and time. Planned dogleg severity. Actual dogleg severity. Actual dogleg severity - Maximum. Bottom hole assembly status. Bit run number. The BHA (drilling string) run number. Reason for trip. Objective of bottom hole assembly. Drilling parameters.