摘要
SDQ位于雅克拉区块的西部,摸清该区的油气规律,寻找有利勘探目标是该区的一项重要任务。研究地震波在岩层中的传播规律和建立高精度的三维变速场,是提高地震勘探精度寻找低幅度圈闭的一个非常重要的途径。本文根据该区以往的地震、地质资料,从地震速度研究着手,通过对大量地震速度谱分析,用平滑平均速度的方法建立了精细的三维变速场。用该速度场对SDQ三维解释资料进行时深转换,从新落实了SDQ构造,对低幅度构造研究取得了较好的效果,为该区下一步油气勘探井位部署提供了科学依据。
Sandaoqiao is located in the Yakela area in western China. It is important to know the details of oil distribution and regulation. Studying the regulation of seismic wave in rock and establishing 3D varied velocity field with high accuracy is an important method for improving seismic exploration accuracy and finding thin trap. On the basis of former seismic and geology data in that area, this paper, beginning from the velocity research, discusses the establishment of fine varied velocity field by studying a lot of seismic velocity spectrum data with smooth and average method. By using the velocity field time--to--depth transfer of the interpretation data of Sandaoqiao,the structure of Sandaoqiao is confirmed, which is a good result for the study of low range structure and provides science evidence in that area for further oil ＆ gas exploration and well deployment.
出处
《工程地球物理学报》
2005年第3期228-231,共4页
Chinese Journal of Engineering Geophysics
关键词
塔里木盆地
平均速度
地震圈闭
构造分析
Talimu basin
average velocity
seismic trap
structure analysis
