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苏里格盒8段砂体横向变化快、非均质性强,研究表明,该区盒8段含气砂体一般表现为第三类AVO现象,叠前参数反演得到的泊松比对该区含气砂岩敏感,叠前反演结果中不同角度弹性阻抗交会、横波阻抗以及泊松比的结合使用可以在该区有效地反映岩性及流体特征。通过聚类分析等技术形成这些属性及反演所得弹性参数的平面展布图,直观反映了有效储集层的横向变化特征,为井位部署提供了依据。
The sand body of Block 8 of Sulige box changes rapidly and has high heterogeneity. Studies have shown that the gas-bearing sand bodies in Block 8 of this area generally show the third type of AVO phenomenon, and the Poisson’s ratio obtained by inversion of prestack parameters The gas-bearing sandstone is sensitive in this area. The combination of elastic impedance intersections, shear wave impedances and Poisson’s ratios in different angles in the pre-stack inversion results can effectively reflect lithology and fluid characteristics in this area. The formation of these properties and the plane distribution of the retrieved elastic parameters by clustering analysis and other techniques directly reflect the lateral variation characteristics of effective reservoirs and provide the basis for well location deployment.