一种提高地震勘探解释精度、分辨率的新方法—DDM方法

A new method for raising the interpreting precision and resolving power in seismic exploration

DDM(Depth DensityMethod)方法是将地震时间剖面直接反演成深度、密度剖面的一种地震资料处理方法.在几千米的勘探深度范围内,该方法可以使地震勘探的精度由相对精度用绝对精度来表示;使分辨率由十几米提高到2～3米;从深度、密度剖面中,地质人员可以解释出地层的岩性,时代、砂体的厚度、沉积旋回、沉积粒序,几米、十几米的断层和褶皱.本文主要简介该方法的工作原理、地质解释的原则和在生产中的应用实例.

DDM(Depth-Density Method) seismic data processing method can directly transfer the seismic time section to the depth-density section of that surveying line. This method can replace relative precision with absolute precision in several kilometer depth seismic exploration, it can raise the resolving power from over decade meters to 2～3 meters. Geologist can interpreted the lithology, era, sand thickness, sedimentary sequence of the stratum, folding, small fault from the processed depth-density profile. The article mostly introduce the working principle, interpreting principle and application example of the method.