This book is the result of many years of careful research by drilling technicians into the causes and effects of blowouts with the aim of preventing them or controlling the flow of formation fluids into the well which proceeds them. It identifies and analyzes the possible causes of blowouts, whether through equipment failure, inadequate procedures, or human error, and examines in detail the key factors which could be crucial in preventing them. 184 pp. Editions Technip, 1981.