Suction Pile Technology and Installation in Deep Waters

Abstract

Skirted anchors or "suction piles" are suitable for moorings in deep waters. The main advantage with the skirted anchor compared to other alternatives in deep water is the fixed-point installation and no need for drag-in operations or proof loading.In this paper, different design and installation aspects such as anchor geometry, load response, equipment and marine operations are discussed for soil and loading conditions representative for deepwater field developments around the world. The length to diameter ratio, called the aspect ratio, is a key parameter for the maximum feasible suction penetration depth.Experience from deep-water installation of suction pile anchors around the world is discussed. New concepts involving suction pile technology provide attractive solutions for deep water. Applications for subsea templates, pipeline supports, well heads and risers are presented.