The overall process of high-deck float-over for the large platform in paralic zones

Abstract

As the demand for oil and gas resources continues to grow, the development of oil and gas resources in paralic zones is also increasing. Because the water depth is very shallow in paralic zones, large construction equipment cannot enter the construction area, so the offshore installation of large platforms is facing a great challenge. The float-over installation method has the advantages of large lifting capacity, short operation period, and low construction cost. At the same time, it can effectively reduce the amount of dredging work and is more suitable for the offshore installation of large platforms in paralic zones. In this paper, the installation process and key technologies of hi-deck float-over for the large platform in paralic zones are emphatically introduced. The key technologies include the barge motion response analysis technology, the barge ballast adjustment technology, the positioning and buffering technology and motion monitoring technology, etc.