测井联合地震反演在辉绿岩蚀变带识别中应用

黄骅拗陷地处渤海湾盆地，构造活动强度大且频繁，致使该区火成岩非常发育。其中辉绿岩在该地区多有分布，受辉绿岩烘烤形成的蚀变带储集层为寻找新的油气藏类型提供了方向。以大港油田R 区钻遇辉绿岩蚀变带己知井的测井资料为出发点，总结了其测井响应及波阻抗特征；结合地震反演所得出的波阻抗反演数据体和多属性反演自然伽马数据体，对辉绿岩蚀变带的分布和厚度进行了预测。所得出的辉绿岩厚度与己知井统计吻合良好，为该区域辉绿岩蚀变带储层的下一步勘探提供了重要的参考依据。

Application of Combination of Logging and Seismic Inversion in the Diabase Alteration Zone Recognition

Huanghua depression is in Bohai Bay basin,where tectonic activity is intene and frequent,and igneous rock developed well in this area,especially diabase. The reservoir of diabase alteration zone which is generated by diabase baking provides a direction to find new types of oil and gas reservoirs. This paper takes well logging data of drilling diabase alteration zone in R district of Dagang Oilfield as examples,and summarizes the characteristics of log response and wave impedance, then predicts the distribution and thickness of diabase alteration zone by combining the impedance inversion data volume with multi-attribute inversion natural gamma data volume. As a result,diabase thickness is in good agreement with the wells statistics and this provides an important reference for further exploration of diabase alteration zone reservoir in the region.