单一属性描述该区砂岩发育状况比较困难。为了解决这一问题，首先对该区35 口井的岩性、测井以

及地震相特征综合分析，总结出了该区岩性发育的4 种模式为厚砂( 砂砾) 岩、砂泥互层( 砂岩厚

度大) 、砂泥互层( 泥岩厚度大) 及厚泥岩夹薄砂岩。在精细构造解释和属性提取的基础上，优选了

频率带宽、均方根振幅及相对波阻抗等3 种能对该区几种砂岩发育模式进行全面描述的敏感属性。并

运用属性雕刻的方式，通过多属性分析对研究区营城组营四段砂岩发育区进行了预测。

of Xujiaweizi fault depression． The prediction of development of sand bodies with a single attribute is difficult due to the complex lithological combination and rapid horizontal variation． To solve this problem，4 patterns of lithologic

development ( thick sandstone or glutenite，interbeds of relatively thick sandstone and mudstone，interbeds of sandstone

and relatively thick mudstone，and thick mudstone interbed with a few sand or siltstone) are summed up through analysis of lithologic characteristics，well logging information and seismic facies of 35 wells in Xuxi area．

Based on the fine seismic interpretation，multiple seismic attributes have been extracted，finally the most sensitive attributes such as frequency bandwidth，ＲMS amplitude and relative wave impedance are optimized，which can

comprehensively describe the sandstone development． The goal of predicting development of sand bodies in 4th

member of Yingcheng Formation in Xuxi area is achieved by calculating strata slices and attribute engraving．