折射波共出射点多次叠加—速度计算方法和制作共出射点深度剖面的原理

MULTIPLE STACKING OF REFRACTION AT THE POINT OF COMMON EJECTION-A technique for velocity calculation and common ejection point depth plotting

山东海洋学院

折射波地震勘探共出射点多次叠加和数据处理方法,是在海上工作实践中提出的一种新方法,并在室内进行了理论模拟试验。在折射波叠加数据处理和时深转换中,速度是一个重要参数。文章中论述了利用折射波共出射点多次叠加资料计算界面速度、地层厚度和折射界面上覆地层速度的原理和方法,设计了计算程序框图。最后,介绍了在折射波叠加技术中制作共出射点深度剖面的基本原理和方法。

The technique of multiple stacking and data processing of refraction at the point of common ejection is a new technique put forward by the author of this paper in his marine exploration. The theoretical analogue experiment has also been made in laboratory. Velocity is a very important parameter in dealing with both the stacked data of refraction and the time-depth conversipn. In this paper, the principle and technique for calculating the boundary velocity, the layer thickness, and the velocity of the overlying formation by using the multistacked data of refraction at the point of common ejection were described. The flowchart for the calculation was designed. At the end of this paper, the essentials and the related treatments for plotting the depth section of common ejection points were given out.