| 应用折射层析方法解决塔里木盆地浅部地震速度的分布 |
| |
| 引用本文： | 刘清林,李文龙,李成猛,万有林,石彦.应用折射层析方法解决塔里木盆地浅部地震速度的分布[J].吉林大学学报(地球科学版),1998(1). |
| |
| 作者姓名： | 刘清林 李文龙 李成猛 万有林 石彦 |
| |
| 作者单位： | 中国新星石油公司石油物探研究所，中国新星石油公司西北石油地质局 |
| |
| 摘 要： | 首次提出了用于解决塔里木盆地地震资料数据处理中浅部地震速度分析的折射层析成象方法。该方法可以通过求解任意变速介质中的二维程函方程、射线追踪和ＳＩＲＴ迭代解法实现。通过对塔里木盆地地震资料的层析反演取得了较好的结果，揭示了浅部地震速度具有较大的横向变化。这一变化对建立地下速度模型及反射构造成象有较大影响，钻井资料证实了这一结果。这项研究的成功对研究塔里木盆地地震波速度的变化规律及进一步提高该区整体地震资料处理与解释的质量具有重要的实际意义。
|
| 关 键 词： | 地震速度 折射层析成象 塔里木盆地 |
THE DETERMINATION OF SEISMIC VELOCITY DISTRI BUTION IN SHALLOW LEVELS BY REFRACTION SEISMIC TOMOGRAPHY IN TALIMU BASIN |
| |
| Liu Qinglin,Li Wenlong,Li Chengmeng,Wan Youlin.THE DETERMINATION OF SEISMIC VELOCITY DISTRI BUTION IN SHALLOW LEVELS BY REFRACTION SEISMIC TOMOGRAPHY IN TALIMU BASIN[J].Journal of Jilin Unviersity:Earth Science Edition,1998(1). |
| |
| Authors: | Liu Qinglin Li Wenlong Li Chengmeng Wan Youlin |
| |
| Abstract: | A refraction seismic tomographic method is proposed for the first time to determine the distribution of seismic velocity in shallow levels in Talimu Basin. The method can be implemented by the solution of 2D eikonal equation with any velocity variations, raytracing and an iterative algorithm-SIRT. The tomographic inversion of seismic data is better shown in the Talimu Basin and it revealed obvious lateral velocity variation in shallow levels. The variation of seismic velocity in shallow levels has important influence on velocity modelling and reflection imaging, which is confirmed by borehole data. The achievement is of great significance for us to find out the law of seismic velocity changes and to improve the quality of seismic data processing and interpretation in Talimu Basin. |
| |
| Keywords: | seismic velocity refraction tomography Talimu Basin |
| 本文献已被 CNKI 等数据库收录！ |
