泊松阻抗属性分析方法在琼东南盆地X构造目标区储层预测中的应用

摘要

Aiming at the difficulty that any single parameter of P-wave impedance and elasticity can't be used to identify reservoirs in Qiongdongnan basin, an attribute analysis of Poisson impedance has been selected. This method integrates two attribute information of Poisson ratio and density and has a higher resolution for porous sandstones and gas-bearing sandstones.For X structure target in Qiongdongnan basin, this method was applied to analyse the space distribution of hydrocarbon zones and porous sandbodies, and the prediction results were confirmed by drilling.%针对琼东南盆地储层预测中利用单一的常规纵波阻抗和弹性参数均不能识别目标区储层的难点,选用了泊松阻抗属性分析方法,该方法融合了泊松比和密度2种属性信息,对高孔隙度砂岩和含气砂岩具有较强的分辨能力.利用该方法对琼东南盆地X构造目标区油气层的空间展布进行了分析,预测了高孔隙度砂体的分布范围,其预测结果得到了钻井证实.