【作者】 丁维凤； 潘国富； 苟诤慷；

【Author】 DING Wei-feng,PAN Guo-fu,GOU Zheng-kang (Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012,China)

【机构】 国家海洋局第二海洋研究所；

【摘要】 时深转换处理是反射地震资料处理解释中重要的步骤。因准确的时深转换需要确定的速度模型,而速度模型的建立又需要验证钻孔与测井资料作正演,获取这些资料需要很大投入。目前商业软件都采用一个平均数据作整体转换,该方法对不同岩性反射地层的深度转换带来很大误差。为了避免复杂速度模型的建立与单个平均速度转换的误差,本文提出了时深转换在层位解释输出时进行,而不对整个时间记录剖面作转换,并设计了相应的层速度输入接口与计算方法,通过对实际探测资料的转换,输出结果基本符合实际解释工作的精度要求。更多还原

【Abstract】 Time-Detph transfer is a very important step in reflecting seismic process.Because classical transfer depends on exact velocity model,and need the well-logging data and synthetic seismic building,these need too much money and much work.So commercial softs use averaging velocity to transfer,but using one velocity to transfer will brings error in the different lithology reflecting layers.To avoid these problem,the author brings forward to transfer time to depth when outputting the interpreted layers,while not to transfer the whole time profile.At the same time,the author program a soft interface to input the different layer velocity and the arithmetic to transfer the time to depth.When transferring the actual time profile data,the results are satisfied with the interpreted precision.更多还原