基于地震反演及多信息协同约束的冲积扇储层精细建模

The alluvial fan reservoir modeling based on seismic inversion data and multiple information constraint

油田开发早期区块井资料少、井距大,难以对储层进行精确描述。采用叠后地震反演数据进行沉积相研究,定量分析扇根亚相各微相,为三维沉积相模型提供地质参数;以测井数据为硬数据,采用沉积相控制、反演协同体等信息约束建立储层的泥质质量分数模型。结果表明,应用包括地震反演信息在内的多种信息进行约束建模,可以综合测井资料纵向高精度和地震资料横向高精度的优点,解决勘探开发阶段储层精细描述的问题。

Oilfields in the early development phase has limited well data and large well spaces,which makes it difficult to describe the reservoir accurately.The post-stack seismic inversion data is used to study sedimentary facies and quantitatively analyze microfacies,whose results provide detailed geological parameters for the 3D model.Meanwhile,the shale model is established by using logging data as hard data,with controls from sedimentary facies and inversion synergetics.It's shown that the model is constrained by a variety of information including seismic inversion data,which combines the advantages of high vertical precision from wireline logging data and high horizontal accuracy from seismic data,to achieve reservoir fine description in the exploration and development stage.