井约束变砂模式识别法的应用
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摘要
根据徐家围子—丰乐地区葡萄花油层的实际地质分析资料 ,通过建立探井控制区内代表沉积环境的声波与密度背景值测井曲线 ,在该区地质沉积环境条件约束下构建了代表储层内不同砂层厚度和不同砂层组合的地质模型。在此基础上 ,对这些地质模型进行正演并将其转换成地震响应模型 ,最后采用滑动时窗对比法 ,将这些地震响应模型与目的层段内的实际地震道进行多参数对比 ,以相似系数最大为准则将实际地震道反演成地质模型 ,从而达到预测储层内砂体分布的目的 ,应用效果较好
Based on practical geological analysis data of Putaohua reservoir in Xujiaweizi Fengle area, through acoustic and density logging curves representing depositional setting in exploration well controlling area, a geological model representing different thickness of sand zone and different sand zone assembly is built up at geological depositional setting condition restriction. And then these geological models are forwarded and converted to seismic response models. At last sliding time window comparison method is used to correlate these models to practical seismic traces of the target intervals, reversing these traces to geological models according to maximum similar coefficient and then predicting sand body distribution of the reservoir, the practical results are better.
Based on practical geological analysis data of Putaohua reservoir in Xujiaweizi Fengle area, through acoustic and density logging curves representing depositional setting in exploration well controlling area, a geological model representing different thickness of sand zone and different sand zone assembly is built up at geological depositional setting condition restriction. And then these geological models are forwarded and converted to seismic response models. At last sliding time window comparison method is used to correlate these models to practical seismic traces of the target intervals, reversing these traces to geological models according to maximum similar coefficient and then predicting sand body distribution of the reservoir, the practical results are better.
引文
[1]范祯祥,郑仙种地震波数值模拟与偏移成象[M]郑州:河南科学技术出版社,1994
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