东海多块三维地震数据体拼接技术综述

Solutions to 3D Seismic Data Merging in East China Sea

在过去的十几年中,在东海西湖凹陷主要构造先后进行了三维地震数据的采集。不同时间采集的三维数据其网格方向、面元大小、电缆长度、面元覆盖次数均不同,且应用不同处理流程及技术进行处理。由于存在诸多不一致性,这些数据难以满足工区整体的地质解释、储层描述等综合研究。多块三维地震数据拼接处理的目的是得到单一数据体,具有统一网格方向、面元大小,振幅、相位均一致。文章论述多块三维数据体在迭前、迭后进行拼接处理的解决方案,介绍拼接过程中需解决的主要问题、关键技术及综合处理流程。

Over the last ten years, many of key exploration areas have been covered with 3D seismic in East China Sea. These 3D seismic data of different vintages, grid orientations and bin sizes has been processed using different processing sequence and variable levels of processing technology. The differences among blocks cause difficulty in appraising the whole area. The goal of 3D merging is to produce a single, highquality seismic volume with uniform and consistent amplitude and phase, and a single bin size and orientation. This paper presents solutions to 3D seismic data merging in East China Sea and describes the main processing steps involved in prestack or post stack data merging.