World Oil's 1998 Drill Bit Classifier ///

Annual comprehensive listing of 23 major manufacturers' commercial bits. Divided into six formation types from soft/ sticky to extremely hard, tables show name, IADC code, size, performance of each firm's offerings

Log in to view this article.

Not yet a subscriber?  Find out more and subscribe today! 

Already a subscriber but don’t have an online account? Contact our customer service.



*Access will be granted the next business day.