Abstract: Cooling water system is one of the important public systems of offshore oil and gas field platforms. At present, the cooling water system of oil and gas field platforms in Bohai Sea generally adopts seawater direct cooling technology. In order to deal with the problems of corrosion of equipment and blockage of marine organisms,and improve the stability of cooling water system,a stable and efficient centralized circulating cooling water system is proposed. This paper mainly introduces the design scheme of centralized circulating cooling system and the first application in the development project of a condensate gas field in Bohai Sea,in order to provide reference for the subsequent design of cooling water system for offshore oil and gas field platforms.

Key words: centralized, seawater direct cooling, closed circulating cooling