Field operations of drillstrings and marine risers are complex and require the sill of experts with engineering knowledge and experience. The objective of this book is to provide analytical tools to assist in designing and operating these long tubulars. Closed form solutions are emphasized throughout. This book is intended for early-career and advanced engineers and their managers concerned with offshore drilling and petroleum-extraction operations. It will serve as a reference for the practicing engineer as well as a text for short courses designed for continuing education and professional training.