浅析无桩号施工可控震源激发位置的控制

Analysis of the control of the excitation position of vibroseis stakeless construction

可控震源无桩号作业模式下,可控震源激发时记录的组合中心坐标将作为勘探最终成果进行提交,可控震源的导航定位精度至关重要。通过对海外项目多种可控震源激发定位精度控制方法进行调研分析,从原理上介绍了GPS数据流对可控震源激发的约束、数据流的拾取过程、不同坐标转换,提出了一种适用于陆上无桩号地震数据采集项目的可控震源激发位置坐标提取方法和定位精度控制措施。

In the vibroseis stakeless construction mode,the combined center coordinates recorded when the vibroseis is excited will be submitted as the final exploration results,and the navigation and positioning accuracy of the vibroseis is very important.Through the investigation and analysis of the quality control methods of various vibroseis excitation positioning accuracy in overseas projects,the principle introduced the constraints of GPS data stream on vibroseis excitation,the data stream picking process,and the conversion of different coordinates,and a set of suitable for land extraction method of excitation point coordinates and quality control measures of positioning accuracy for stakeless seismic acquisition projects.