Jetting of Structural Casing in Deepwater Environments: Job Design and Operational Practices

Abstract

Summary Structural casing jetting operations have become commonplace in deepwater environments. Having originated in the Gulf of Mexico (GOM), structural casing is now jetted in most deepwater basins in the world. Very little literature has been published regarding jetting practices. The lack of published literature, combined with the complex mechanics and hydraulics of the process and the lack of detailed-soil data at most locations, results in an operation that is heavily dependent on the experience and expertise of the rigsite team. This paper reviews current deepwater structural casing jetting job design and operational practices. Also included are several case histories of jetting failures presented to share learnings with the industry and to stimulate the sharing of learnings and practices.