江陵凹陷玄武岩覆盖区勘探方法研究

玄武岩下伏目的层成像问题越来越受石油工业界的重视。江陵凹陷北部玄武岩发育，并且覆盖在勘探目的层上，致使目的层成像不清，制约了该区的勘探进展。首先从物理模型模拟分析入手，阐述了在该区进行广角-转换波勘探的必要性；然后计算了广角观测系统参数；最后介绍了广角和转换波资料处理方法。通过对江陵2002-375．5线与2003-608线的处理，说明广角和转换波地震勘探在一定程度上能够解决该地区的玄武岩下伏目的层成像问题，并指出了下一步的研究方向。

Exploration and Development of Basaltic Areal Coverage in Jingling Depression

The image of Basaltic underlying target zone are increasingly emphasized in petroleum industry. Basalt is developed in the north of Jingling Depression and covered over the target zone of exploration, thus unclear image is caused, and the progress of exploration is constrained. Starting from the analysis of physical model simulation, the necessity of wide angle-converted wave exploration is described in the area, and the wide angle parameters are calculated. The method for data process for the wide angle and converted wave is introduced. The process of test lines 2003-375.5 and 2003-608 in Jiangling area demonstrates that the problem of basaltic underlying imaging can be solved by the exploration of wide angle and converted wave. The orientation for further exploration is pointed out.