Advances in fatigue design: Curvature index theory

This article describes the application of a new technique to compare relative fatigue lives of drilling tubulars being rotated in curved wellbores. This unique methodology, called Curvature Index (CI) compares different designs for the combined fatigue effects of hole curvature, pipe size, weight, grade, class and axial tension in the tube.

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.