New design offers less maintenance, continuous reliability

摘要

Top drive offers zero-related nonproductive time and provides ample torque for extended reach drilling. A joint research effort between Bentec and its sister company KCA Deutag recently observed causes and conditions surrounding NPT in land drilling operations. Looking at approximately 100 rigs, Bentec estimated NPT accounts for less than 3% of overall drilling time. Of this number, more than 40% of rig downtimes was attributed to top drive failures. Downtime related to top drive failures was split 50/50 between electrical problems (motors, sensors, and electrical connections) and mechanical problems (gear box, moving parts, and structural parts). On the basis of hours, motor and gear box failures accounted for 1,400 of the overall 3,400 hours - nearly 35% of all top drive-related downtime.