【摘要】 针对深水凹陷莺二段地质条件复杂,地震资料信噪比较低、烃检困难等难点,利用琼东南盆地陵水凹陷地气勘探阶段的钻孔资料及测井资料,应用zoeppritz方程进行射线数字模拟,研究该区典型气层及水层段的反射特征和AVO特征,对深水区坡折带低信噪比资料进行了保幅去噪及道集拉平处理,对常规的碳氢指示因子进行了改进。经结果表明:改进的碳氢指示因子对第三类及第四类AVO异常检测卓有成效,第四类AVO异常对于深水勘探有重要意义。更多还原

【Abstract】 For the complex geological condition,low S/N seismic data and difficulty in detecting hydrocarbon in Ying2,we applied zoeppritz equation to the drilling and logging data of oil/gas exploration stage of Ling-Shui depression,Qiong dongnan basin for carrying out ray tracing simulation to study the reflection and AVO responding characteristics.We conducted amplitude preserved processing and gathers flatten techniques on slope-break zone in the deep-water area,also improved the tradition hydrocarbon indicator.And thus,the S/N ration of seismic data can be improved and it is also favorable for AVO analysis.The fourth type of AVO anomaly has important significance in exploring in deep water.更多还原