气藏储层地质建模研究——以红台2区块为例
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摘要
在对红台2区块气藏23口井的地震、地质、钻井、测井、测试及生产资料分析的基础上,充分运用确定性Strata、Stratimagic随机(Jason)建模新技术、新方法,对储层进行全面、细致的三维定量表征,建立了气藏储层的构造模型、沉积微相模型和储层物性参数的三维数据体,网格大小为20m×20m×1μs(2m),提高了气藏储层描述的精度。本次模型从以下方面进行对比验证:模拟图像是否符合地质概念模式;模拟结果的统计参数与输入参数的接近程度;模拟结果是否忠实于真实数据,判别与未参与模拟的硬数据是否吻合;模拟结果是否符合生产动态变化;通过油藏数值模拟的历史拟合证明地质模型的准确性;以地质专业知识综合判断三维地质模型的可靠性。模拟结果改进了传统的井间插值法在储层预测方面的不足,为气藏开发部署提供了可靠依据。
Based on the data analysis of the seismic,geology,logging,testing and production in 23wells of gas reservoirs in Hongtai2 block,new technologies and new means of deteministic Strata and Stratimagic stochastic(Jason)modeling are applied to comprehensive and detailed quantitative 3D characterization for the reservoirs.Structural model,sedimentation microfacies model of gas reservoir and 3D data volume of physical property parameters are built up with the grid size of 20m×20m×1μs(2m),which will make the accuracy higher on reservoir description.The models are verified on following aspects.Simulated image matches with geologic concept pattern or not;statistic parameters and input parameters of the simulation results is the same or not;simulated results is near the real one or not so as to judge its coincidence with non-simulated hard data;the simulated results coincides with dynamic production or not;accuracy of the geologic model is proved through history match of reservoir numerical simulation;the reliability of 3D geologic model is judged comprehensively through geologic knowledge.The simulated results make up the short of the traditional interwell interpolation method on reservoir prediction,which provide dependable foundation for gas reservoirs development.
Based on the data analysis of the seismic,geology,logging,testing and production in 23wells of gas reservoirs in Hongtai2 block,new technologies and new means of deteministic Strata and Stratimagic stochastic(Jason)modeling are applied to comprehensive and detailed quantitative 3D characterization for the reservoirs.Structural model,sedimentation microfacies model of gas reservoir and 3D data volume of physical property parameters are built up with the grid size of 20m×20m×1μs(2m),which will make the accuracy higher on reservoir description.The models are verified on following aspects.Simulated image matches with geologic concept pattern or not;statistic parameters and input parameters of the simulation results is the same or not;simulated results is near the real one or not so as to judge its coincidence with non-simulated hard data;the simulated results coincides with dynamic production or not;accuracy of the geologic model is proved through history match of reservoir numerical simulation;the reliability of 3D geologic model is judged comprehensively through geologic knowledge.The simulated results make up the short of the traditional interwell interpolation method on reservoir prediction,which provide dependable foundation for gas reservoirs development.
引文
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