岩性圈闭识别中高分辨率资料的处理和应用

Processing and Application of High-resolution Data in Lithologic Trap Identification

不同的岩性圈闭类型,在地震剖面上的响应特征不同。通过对江汉盐湖盆地潜江凹陷BH地区同一区块不同年代、不同采集方法、不同处理方法的资料进行针对性对比和应用效果分析,认为基于道集低截频、精细速度分析、道集优化、小角度叠前时间偏移等方法处理的资料剖面视分辨率能显著提高,其资料应用到岩性目标识别和解释中效果较好;岩性油藏勘探构造相对简单的情况下,适当降低覆盖次数,能降低投资成本。

Different lithologic trap types have different response characteristics in seismic profiles.Based on targeted comparison and application effect analysis of the data in the same block of BH Area in Qianjiang Sag of Jianghan salt lake basin acquired in different ages,different collection methods and different processing methods,It is considered that the visual resolution of the data profile processed by the methods such as trace set low intercept frequency,fine velocity analysis,channel set optimization and small Angle prestack time migration can be significantly improved,and the data can be applied to the identification and interpretation of lithologic targets with good effect and that In the case of relatively simple lithologic reservoir exploration structure,the investment cost can be reduced by reducing the coverage times appropriately.