大港滩海地区为平台式钻井，以大斜度/水平井进行开发，钻、测井资料少。该区断层多而复杂，构造起伏大，储层横向变化快，钻井风险大。本文基于研究区构造特征、沉积特征等，利用地震解释成果及井数据依次建立断层模型、构造模型；将地震属性、地震反演等成果作为第二变量，充分应用有限的井资料，采取逐级约束、逐级控制的方法，从泥质含量模型到岩相模型，再到沉积微相模型，进一步到孔隙度模型，最后到渗透率模型，最终完成了地质模型的建立。同时利用地震数据体空间检验、剖面检验等多种方法检验地质模型，确保了模型的准确性。该套少井多参数联合地质建模技术解决了井资料匮乏带来的难题，所建立的地质模型为提高钻井成功率提供保障，为油藏数值模拟提供基础。%Well drilling is based on the platform,and the type of wells is mainly of high angle of shallow sea area in Dagang oilfield. Therefore,the drilling and logging data is limited. There are many faults,which leaded to the com-plicated structure. The reservoir changes so fast that the risk of drilling is increased. Based on the structure and sed-imentary features,the fault and structure model are set up with the seismic interpretation and well data. The step by step controlling method is adopted. VSH model is set up controlled by seismic data or seismic inversion result,and lithology model controlled by VSH model,microfacies model controlled by lithology model,and porosity model con-trolled by microfacies model,and permeability model controlled by porosity model. In the process limited well data is applied adequately. Meanwhile,the model is examined by seismic data in 3D space,etc. This method of multi-pa-rameters combination geological modeling technique solves the problem caused by lack of well data. The geological model can increase the success rate of drilling and provide the basic data cube for reservoir numerical simulation.
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