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通过实验室高温高压岩电实验、数值模拟及不同泥浆类型测井资料的综合分析,认为盐水泥浆滤液侵人较深是造成辽河油田海南构造带油气层电阻率低的主要原因。针对该地区的特点,研究了一套具有三级精度控制的侧向测井曲线混合反演技术,计算地层的真电阻率Rt和侵人带直径Di;利用岩心分析和测井等资料建立了孔隙度、泥质含量、束缚水饱和度和含水饱和度等基础参数的解释公式和油气水层识别标准,编制出相应的测井评价软件ninv和paracom。该方法已成功地应用于处理该地区11口井测井资料,取得明显的地质效果。
Based on the laboratory experiments of high temperature and high pressure rock and electric field, numerical simulation and comprehensive analysis of logging data of different mud types, it is considered that the deep intrusion of brine mud filtrate is the main reason for the low resistivity of hydrocarbon reservoir in Hainan tectonic zone of Liaohe Oilfield. According to the characteristics of the area, a set of lateral well logging curve inversion inversion technique with three-level accuracy control was studied to calculate the true resistivity Rt of the formation and the diameter Di of the invader belt. The core analysis and logging data were used to establish Porosity, mud content, irreducible water saturation and water saturation and other basic parameters of the interpretation formula and oil-gas aquifer identification standards, the corresponding logging evaluation software ninv and paracom. The method has been successfully applied to processing well logging data of 11 wells in the area and achieved obvious geological effects.