河流相砂体叠合模式约束的地震协同建模技术

Seismic Collaborative Modeling Technology Constrained by Sand Body Composite Model in Fluvial Facies Reservoir

在海上稀疏井网条件下,地质建模变差函数的确定存在较大不确定性,难以精确表征储层非均质性。地震协同建模技术可深度挖掘地震资料横向预测精度高的潜力,同时采用砂体叠合模式作为约束条件,可以有效减低地震资料预测砂体空间分布的多解性。以砂体叠合模式为指导,应用地震协同建模的理念,融合地质、测井、尤其是地震信息建立地质模型,提高地质建模的效率和预测的精度,是海上稀疏井网条件下合理建立地质模型的有效手段。

Under the condition of few wells on the sea, there is a big uncertainty during the process of geo-logical modeling, and it is difficult to accurately characterize the heterogeneity of the reservoir. The seismic collaborative modeling technology can deeply explore the potential of high lateral prediction resolution and using composite sand body model as the constraint conditions at the same time, can effectively reduce the uncertaintly of seismic data to predict the multiple solutions of the spatial distribution of sand body. Guided by the composite sand body model, the method of seismic collaborative modeling which integrates geology, logging and seismic information to build geological model can improve the efficiency of geological model and prediction accuracy. It is an effective way to build geological model under the condition of sparse well pattern on the sea.