江苏地区中、古生界构造成图方法研究及其应用效果

在速度随深度呈线或准线性变化的地区，主要有两种常规构造成图方法：①对由水平叠加解释剖面得到的等t0图进行空校；②对由偏移解释剖面得到的第t0图采用统一速度进行时-深转换。针对江苏地区中、古生界地层速度“在纵向上随深度呈非线性变化，且横向变化大”的特点，本文提出了分区剥皮成图方法系列，即：一般剥皮法、分层等效变速法、等效分步成图法。这些方法很好地消除了常规成图方法在以碳酸盐岩储层为主要目的层地区的不适应性，具有简便易行、精度高的特点，在实际应用过程中取得了很好的效果。

Study of Mesozoic-Paleozoic structure mapping method in Jiangsu area and its application effects.

The ordinary structure mapping methods mainly include two kinds in an area of linear or quasi linear variation of velocity with depth: the one is space correction for isochronic t 0 map resulted from interpretation of stack section; the other is to using uniform velocity for time depth conversion of isochronic t 0 map resulted from interpretation of migration section. Aimed at character of that Mesozoic Paleozoic stratum velocity is non linear variation with depth vertically and severe change laterally, the paper studied a mapping series of layer stripping in different area respectively, that is general layer stripping, equivalent variable velocity layer by layer and equivalent mapping step by step. These methods successfully eliminate the inadaptability of ordinary mapping methods in an area where the carbonate reservoir is major target, have advantages of simple and easy use and achieve a good result in a process of real application.