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研究了南海北部大陆边缘盆地活动热流体的基本物理参数——异常地层压力，探讨了地层压力的预测方法，分析了声波时差与实测地层压力的矛盾，并采用了综合参数预测的有效方法，从理论上建立正常压实趋势线的数学模型；运用该模型计算了异常压力的下界面和建立了压力囊的断面图；计算并分析了高压顶面压力系数、气势与水势及其油气运移聚集的有利部位
The basic physical parameters of the active fluid in the continental margins in the northern continental margin of the South China Sea - abnormal formation pressure are studied. The prediction method of formation pressure is discussed. The contradiction between acoustic time difference and measured formation pressure is analyzed. An effective method of comprehensive parameter prediction is adopted. The mathematic model of normal compaction trend line is theoretically established. The lower interface of abnormal pressure and the section of pressure capsule are calculated by using this model. The pressure coefficient of top surface, the potential and water potential and their hydrocarbon migration and accumulation are calculated and analyzed The favorable position