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针对温吉桑地区致密砂岩储层特点,采用地震资料保幅处理与叠前反演一体化运行方式,做好地震资料和井资料处理工作,解决横波预测难题,精细井资料岩石物理分析,寻找可用于识别岩性和流体的敏感参数,加强叠前反演过程的质量监控。通过叠前反演获得纵波速度、横波速度和密度参数,进而转换为对岩性和流体敏感的其它参数,进行有效的储层预测和含油气性检测。通过叠前反演技术的研究,落实了温吉桑地区水西沟群及西山窑组3～4段砂岩储层平面分布和空间展布特征,为新的井位部署和储量计算提供了技术支持。
Aiming at the characteristics of tight sandstone reservoirs in Wenjisang area, seismic data and well data processing are done by seismic data amplitude preserving and integrated prestack inversion. Solving the problems of transverse wave prediction and petrophysical analysis of fine wells, It can be used to identify sensitive parameters of lithology and fluid and enhance the quality control of prestack inversion. The P-wave velocity, shear-wave velocity and density parameters are obtained by prestack inversion, and then converted to other parameters that are sensitive to lithology and fluid, so that effective reservoir prediction and hydrocarbon-bearing detection can be carried out. Through the research of prestack inversion technique, the plane distribution and spatial distribution characteristics of sandstone reservoirs of Member 3 ~ 4 in Shuixigou Group and Xishanyao Formation in Wenjisang area have been fulfilled, which provides the technology for new well location calculation and reserves calculation stand by.