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海水热物理性质研究对确定合理的海洋油气田开发工艺参数具有重要意义。以黄海海域唐岛湾海水为研究对象,测试了在273.15~293.15K下,海水的密度、粘度、导热系数和比热容随温度的变化规律,回归了相应的热物性公式和检验了误差,并将实验结果与纯水及文献中海水的热物性参数进行了比较。结果表明,实验结果与文献数据随温度的变化趋势一致,海水的密度和粘度随温度的升高而减小,导热系数和比热容随温度的升高而增大;由于唐岛湾海水的盐度略低于文献中海水的盐度,海水密度、粘度和导热系数均小于文献中的值,比热容大于文献中的值。研究结果可为低温海水物理性质的确定及油气田开发提供理论指导。
The study on the thermophysical properties of seawater is of great significance to determine the reasonable technological parameters for the development of offshore oil and gas fields. Taking the seawater of Tangdao Bay in the Yellow Sea as the research object, the variation law of seawater density, viscosity, thermal conductivity and specific heat capacity with temperature at 273.15 ~ 293.15K was tested. The corresponding thermophysical formula was returned and the error was verified. The experimental results are compared with that of pure water and the thermal properties of seawater in the literature. The results show that the experimental results and literature data are consistent with the trend of temperature. The density and viscosity of seawater decrease with the increase of temperature, and the thermal conductivity and specific heat capacity increase with the increase of temperature. Because of the salinity Slightly lower than the salinity of seawater in the literature, seawater density, viscosity and thermal conductivity are less than the value in the literature, the specific heat capacity is greater than the value in the literature. The results can provide theoretical guidance for the determination of the physical properties of low-temperature seawater and the development of oil and gas fields.