地震储层预测技术在塔里木盆地雅克拉地区的应用

塔里木盆地雅克拉地区油气资源丰富，但成藏规律不明显，针对该区侏罗系砂岩储层的展布及物性开展地震综合预测研究。通过叠后纯波地震资料，开展拟声波反演、频谱成像技术刻画砂砾岩体的纵横向分布。在此基础上开展叠前弹性波阻抗反演，包括目标储层段的纵横波阻抗，拉梅系数等分布特征及高频吸收衰减流体检测技术，分析不同岩性、物性、含油气性的地震响应特征。综合地震储层预测技术，研究侏罗系下统砂砾岩体有效储层的分布，寻找油气勘探有利靶区。

Application of seismic reservoir prediction technology in Yakela area of Tarim Basin

Oil and gas resources are rich in Yakela area of Tarim Basin,but the accumulation rule was not recognized obviously.The authors did the research on seismic comprehensive prediction for Jurassic sandstone reservoir in extension and its physical property.The inversion of pseudo-acoustic curves and spectrum imaging technology were made by means of post-stack pure wave seismic data in order to depict vertical and horizontal distribution of sandstone.On the basis of which,the impedance inversion of prestack elastic waves including the P-wave and S-wave impedance,distribution characteristics of Lame coefficient and liquid detection technique of high frequency absorption attenuation for target reservoir were developed to analyze the seismic response characteristics for different lithological,physical and petroliferous properties.The technology of seismic reservoir prediction depicted the distribution of effective reservoir of Lower Jurassic sandstone in the studied area,in order to search for petroleum exploration favorable target.