流动单元四维动态演化仿真模型研究

Four-dimensional dynamic simulation models for flow unit

流动单元是油气储集最小宏观地质单元,应用室内岩心样品不同注入体积倍数驱替实验、不同开发阶段完钻井的测井参数评价及大量生产动态资料,研究分析了不同成因流动单元在水驱开发过程中储层宏观物性参数的演化规律,进而建立各类参数的数学演化模式,找出其相应物性参数的变化因子。并借助工作站三维地质建模软件Earthvision,在原始三维地质属性参数模型研究的基础上,加载物性参数变化因子,并经数据处理和结果提取,形成各类流动单元随开发过程的四维动态系列演化仿真模型,揭示和预测了不同开发阶段流动单元内部油水运动特点及剩余油分布状况。

Flow unit is the smallest macro-geological unit in oil and gas reservoir. By the use of laboratory displacement test of core samples with different porous volume factor, logging parameter evaluation data of completed wells in different development period and a number of production performance data, the evolution laws of reservoir's macro-physical property parameters for flow units with different geneses in the course of waterflooding development were studied and analyzed. The mathematical evolution models for each kind of parameters were established. The variation factors for corresponding physical property parameters were found out. The 3D geological model of working station for establishing software 'Earthvision' was used to load variation factor of physical property parameters on the basis of the original 3D geological parameter models. The data processing and result extraction were made. The four-dimensional dynamic evolution simulation serial models for different flow units in the course of development were developed. So, oil and water flow characteristics and residual oil distribution inside the flow units in different development phases can be predicted with the models.