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滨南地区沙三段浊积砂体储层地震资料品质差、储层相变快,为降低井位部署失利风险,依据精确层序地层格架—地震响应特征分析—地层切片结合优势属性预测砂体横向展布—频谱分解和测井约束反演预测砂体纵向叠置的技术流程,精确描述浊积砂体储层分布。研究区沙三段分为3个三级层序,沙三段中、下亚段为浊积砂体储层发育的主要层段。通过90°相位转换以及地层切片并结合瞬时振幅属性对浊积砂体储层有利发育部位进行预测。结果显示,浊积砂体储层主要发育在滨县凸起东南部以及靠近凸起的部位;将原始数据体用S变换分解为25,30,35,40和45 Hz共5个单频率体,对比显示40 Hz单频率体能较好地显示浊积砂体储层发育情况;随后进行测井约束反演处理,将处理结果与40 Hz分频数据结合得到砂体叠置特征,预测研究区浊积砂体储层主要发育在滨县凸起的东部以及南部区域。
The sandstone reservoir in the third member of Binnan area has poor seismic data quality and rapid reservoir phase change. In order to reduce the risk of failure of well location deployment, according to the precise sequence stratigraphy - seismic response analysis - prediction of formation slice combined with dominant property Lateral distribution of sand body - Spectral decomposition and logging constrained inversion predict the vertical stack of sand body technical process, accurate description of turbidite sand reservoir distribution. The third member of Shahejie Formation is divided into three tertiary sequences in the study area, and the middle and lower sub-member of Shahejie Formation is the main layer of reservoir development in turbidite sand body. The favorable development of turbidite sandstone reservoirs is predicted by 90 ° phase transformation and stratal sectioning combined with instantaneous amplitude attributes. The results show that the turbidite sandstone reservoirs mainly develop in the southeastern part of Binxian bulge and near the bulge. The original data body is decomposed into 5 single frequency bodies of 25, 30, 35, 40 and 45 Hz with S transform , The comparison shows that the 40 Hz single-frequency physical fitness can better display the reservoir development of turbidite sand body; then logging constrained inversion processing, combining the processing results with the 40 Hz crossover data to obtain the sand body superimposed features, the prediction study area The turbidite sandstone reservoirs mainly develop in the raised eastern and southern regions of Bin County.