A New Concept of Jackup Combined Semisubmersible Multifunction Platform

Abstract

In order to overcome the shortcomings of the existing semisubmersible platforms, based on care investigation into various factors affecting the quality of floating platforms, a new concept of jackup combined semisubmersible multifunction platform named JCSM was developed. The JCSM integrates the advantages of the jackup platform and the semisubmersible platform. Also, the comprehensive performance of the JCSM is improved by optimizing the details of the topological structure. Therefore, the JCSM is well-suited for either wet tree or dry tree developments in harsh environments. Meanwhile, it possesses a variety of attractive functions covering drilling, early production, workover, oil and gas treatment, oil storage and unloading, and etc. Thus, a JCSM can be used throughout the entire life cycle of deepwater oil and gas field development, which can greatly help reduce the capex and opex and obtain higher economic benefit. The JCSM is an innovative alternative to the conventional semisubmersibles and a new choice provided for the development of offshore oil and gas fields in the future. The advantages of the JCSM was elaborated and analysed from mechanics perspective in the paper. This study will provide reference for the development of creative floating platforms.