松辽盆地齐家地区薄层砂体定量解释

A QUANTITATIVE INTERPRETATION OF THIN SANDSTONE IN QIJIA REGION OF SONGLIAO BASIN

通过地震资料随机反演技术，可综合地震、地质和测井等多方面信息，得到具有高分辨率的反攻波阻抗或速度部面。在研究井旁砂岩厚度与速度关系的基础上，可实现井间薄层砂体的定量解释。为在地层近似水平的地区进行砂体解释提供了一种快速、准确的方法。在地层起伏较大的地区，对速度进行必要的校正后，也可应用此方法。

Inverted acoustic impedance with high resolution or wave velocity profile can be obtained by using stochastic inversion ofseismic data and integrating multiple informations such as those of seismic, geology and well logging. The quantitativeinterpretation of cross-well thin sands can be realized based on the relationship between the near-well sand thickness and thewave velocity. This paper provides a quick and accurate method for interpreting sand bodies in areas with strata nearhorizontal. In areas with a big relief of strata, this method can be also applied after connecting the wave velocity.