坡移扇储层岩石物理特征

Petrophysical characteristics of the reservoir in slope-shifting fan

以岩石物理理论为基础，结合实钻井分析，对前缘砂、坡移扇及浊积砂储层岩石物理参数进行研究。实钻井正演模拟验证结果表明，拉梅系数弹性参数能很好地区分岩性。利用AVO正演模拟技术对坡移扇、前缘砂及浊积砂进行AVO异常分析。结果表明，坡移扇顶界面反射符合第二类AVO特征，底界面反射符合第一类AVO特征，而前缘砂体、浊积砂顶界面反射符合第一类AVO特征。

Based on petrophysical theory, the petrophysical parameters of three kinds of reservoir (delta front sand,slope-shifting fan and turbidite sand) are analyzed from the real drilling data. The result of the drilling data forwardsimulation shows that the lithology could be distinguished well with the lambda coefficient. The AVO abnormalanalyses are made by AVO forward simulation for the delta front sand, slope-shifting fan and turbidite sand, theresult shows that the reflection from the top interface of the slope-shifting fan conform to the second class of AVOcharacteristics, while that of the bottom interface conform to first class, and the reflection from the top interface ofthe delta front sand and turbidite sand conform to the first class.