相控多属性预测技术在黄河口凹陷渤中35区储层预测中的应用

对渤海海域黄河口凹陷渤中35区东营组古地貌、古沟谷进行研究,明确沉积体系宏观分布规律。建立已钻井辫状河三角洲前缘砂体地质-地球物理的响应关系,应用多属性分析、沿层切片、地震反演、频谱分解等技术对辫状河三角洲前缘砂体的几何形态、分布以及厚度进行预测。结果表明,相控多属性储层预测结果与钻井吻合率达80%以上。

Application of reservoir prediction under facies-constrained and multi-attributes techniquesin Bozhong 35 area,Huanghekou depression

Through researches on paleogeomorphology and paleo-valley, distribution of depositional systems of Dongying Formation could be determined in the Bozhong 35 area of Huanghekou depression of Bohai Sea; and the corresponding relationship between geology and geophysicals of delta front sandbodies could be identified by means of boreholes and seismic data. Combining with application of geophysical techniques including Multi-attributes analysis, horizon slice, seismic inversion and frequency-spectrum decomposition, etc, geometry, distribution and thickness of braided river delta front sandbodies could be predicted. In conclusion, consistency rate between the predictions and boreholes is more than 80%.