【摘要】 二维常规地震反演的分辨率与地震分辨率较为接近,难以识别5m左右的储层。本文利用二维地震与三维地震的关系,首次将二维地震转化为伪三维地震,然后利用三维地震的地质统计学反演算法,对二维地震数据进行了高分辨率的地质统计学反演,从而有效提高了二维反演的纵向分辨率,可满足实际生产对二维地震储层预测的纵向分辨率的要求。同时,结合叠前道集AVO弹性波阻抗反演及高分辨率二维地震储层预测,描述薄有效储层的平面分布特征,实现利用二维地震数据预测薄有效储层的目的。更多还原

【Abstract】 The resolution of 2D seismic inversion depends on that of the seismic data.So it is difficult to identify the reservoir with the thickness less than 5m.Combined with the high-resolution of 3D geostatistical inversion and the relationships between 2Dand 3Dseismic data,we transform 2D seismic data into pseudo 3Dseismic data firstly,then complete the high-resolution geo-statistical inversion on 2Dseismic data by the geo-statistical inversion algorithm for the 3Dseismic data,which can effectively improve the vertical resolution of 2D inversion to meet geological requirements for the vertical resolution of 2Dseismic reservoir prediction.At the same time,combined with pre-stack AVO elastic wave impedance inversion and the geostatistical inversion,we can effectively identify the plane distribution characteristics of thin reservoirs by 2Dseismic data.So we achieved the purpose of predicting thin reservoirs on 2Dseismic data.更多还原