【摘要】 利用南海S海域天然气水合物的测井资料,研究和考察了计算天然气水合物储层孔隙度和水合物饱和度的几种方法,并分析对比其解释结果。孔隙度计算主要采用了密度、声波和电阻率测井资料,饱和度计算采用的是阿尔奇公式和三相Wood方程。针对解释中存在的问题,确定了新的孔隙度和饱和度解释参数。实际应用表明,用新参数得到的孔隙度和饱和度计算结果与岩心分析有较好的一致性。更多还原

【Abstract】 Well logging is irreplaceable in the estimation of gas hydrate reservoir.Our study mainly investigates several methods with logging data obtained from S area to calculate reservoir porosity and gas hydrate saturation,and analyzes and compares their application results.The reservoir porosity is determined by primarily using density logging data,acoustic logging data and resistivity logging data,and the gas hydrate saturation is determined mainly based on the Archie’s formula and the three-phase Wood equation.New parameters for porosity and saturation are proposed according to the problems existed in log interpretations.Practical applications show that the calculated porosity and saturation using new parameters are in good agreement with the core analysis results.更多还原