由于子洲气田山2 段砂岩储层薄, 横向变化快, 因此, 该文在叠后地震储层预测的基础上, 开展了叠前地震储层预测方法的研究与应用。研究表明: 大入射角的地震数据包含了丰富的储层AVO 信息, 通过叠前反演计算弹性阻抗及弹性参数, 可提高有效储层预测精度。该技术在子洲气田天然气气藏地震储层综合预测中的推广与应用, 保证了快速的开发建产, 提高了预测符合率, 为完成子洲气田整体开发奠定了基础。

The sandstone of the second member of Shanxi Formation in Zizhou Gas Field is characterized by thin reservoir and quick lateral variation. Based on the poststack seismic reservoir prediction, the method of prestack seismic reservoir prediction is studied and applied. The prediction accuracy for the effective reservoir can be improved by using prestack inversion to calculate elastic impedance and elastic parameters. The application of this technique in the reservoir prediction in Zizhou Gas Field shows that the prediction coincidence rate is raised, and that it takes a significant part in the development in Zizhou Gas Field.