塔里木巴楚地区复杂地表条件下激发井深设计

Design of the Shooting Hole Depth Under the Complicated Complex Geology's Shallow Layer Condition in Tarim Basin

塔里木盆地巴楚地区地表条件复杂,有山地、戈壁、盐碱地、农田、湖泊、沼泽,沙漠等多种地表类型;以往激发井深设计没有综合考虑潜水面、虚反射界面、子波形态、低频带等各种因素,主要以低降速带厚度做为主要依据,选择在低降速层下的高速层中激发,无法保证合理的激发深度。本文就如何进行复杂地表条件下综合运用多种数据进行激发井深设计展开分析和讨论,为以后在类似探区进行地震勘探,提供理论支持和经验参考。

The surface conditions of the Tarim basin is very complex,with often an exploration area there will be a variety of surface topography,such as：mountains,Gobi,saline land,farmland,lakes,swamps,deserts; such a complex surface conditions in accordance with the past,only make the low velocity layer thickness as the main basis of shooting hole depth,and choose to shoot at a few meters under the low velocity layer is not comprehensive and reasonable; when we designing shooting hole depth,should be considered surface level structure、free water elevation、ghosting interface、seismic wavelet、low-frequency belt,thus ensuring reasonable shooting hole depth.This article conducted a comprehensive analysis of seismic exploration for the future in similar exploration area,to provide theoretical support and experience reference.