一种通过计算机编程快速读取地震数据的方法

Quick Seismic Data Accessing by Computer Programming

地震数据是地质勘探与开发研究工作中一类重要的数据,其格式复杂、数据体庞大,所以地震数据的访问成为地球物理软件开发中的技术难点之一。通过分析常用地震数据的格式,可以明确地震数据访问要解决的关键技术问题是地震道在文件中的随机定位。提出了一种在微机上快速读取地震数据文件的方法,可以实现对大体积地震数据的直接读取与随机数据道访问。将该方法应用于中国石油天然气集团公司科技项目《多学科专家协同勘探虚拟现实工作平台研制》中的地震数据管理软件,可以更为快速准确地读取并转换大体积的地震数据,为实现3D虚拟显示勘探数据的任务目标提供可靠保障。

The seismic data is one of the important data in petroleum exploration and production.Because of its complicated format and huge data body,accessing seismic data becomes one of the difficult technical issues in geophysical software development.By analyzing the common format of seismic data,we can find that the key technique in seismic data accessing is the seismic traces＇ random location in SEG-Y file.This paper puts forward a method of accessing seismic data on PC,we can read the huge body of seismic data directly and access random seismic traces in SEG-Y file.Using this method in seismic data management software,which is included in the technological project ＂multi-discipline experts explore base on virtual reality environment＂ of CNPC,we can access the huge body of seismic data more quickly and exactly.