大情字井地区高精度三维地震解释技术及应用效果

本文针对大情字井地区“三小多断”(小构造、小断块、小断鼻、多断层)复杂构造、“薄、窄、多变”复杂储层等特殊地质条件，开展了高精度三维地震解释方法的研究工作。应用三维可视化、相干数据体、水平切片和图分析等手段进行三维构造精细解释，明显提高了地震勘探识别地下复杂地质构造及地震异常反射体的能力。应用精细地质预测、属性分析、多井约束反演技术对薄互层地质条件下的储层进行了综合岩性解释，定量预测和描述了单层砂岩空间分布及变化规律。本套技术充分发挥了三维勘探的优势，在油田的勘探开发中取得了良好的地震地质效果。

High-precision 3-D seismic interpretation technique in Daqingze well area and applied effects.

In view of special geologic conditions such as the characteristic complex structures (small structure,small faulted block,small faulted nose and multi faults) and complex reservoirs that have the thin,narrow and variant feature,we carried out the study of high precision 3 D seismic interpretation.Using 3 D visualization,coherent data volume,horizontal slice and map analysis to finely interpret the 3 D structures,the ability using seismic exploration for identifying underground complex geologic structure and anomalous seismic reflecting body has been greatly improved.We used fine geologic prediction,attributes analysis and multi well constrained inversion technique for integrative lithologic interpretation of reservoirs having thin and interbedded characteristics,quantitatively predicted and described the rule of spatial distribution and variation for single sand bed.The set of techniques fully displayed the priority of 3 D exploration and achieved good seismic and geologic effects in oilfield exploration and development.