【摘要】 塔里木盆地西南坳陷厚黄土区一直以来都是地震勘探的难点。受地表巨厚黄土的影响,激发和接收条件较差,地震波吸收和衰减严重,地震资料信噪比低,严重影响该区油气勘探的发展。为落实非地震勘探发现的柯西2号构造,在该区进行了二维地震采集技术攻关。针对工区特殊的表层结构,通过综合试验选定了最优化的组合激发参数,同时采取了检波器大基距组合接收、宽线观测系统和精细表层调查等一系列技术措施,取得了较好的效果,所获得的地震剖面品质较以往有了质的改善,较好地完成了地质任务。更多还原

【Abstract】 The thick loess area in southwest depression of Tarim basin is always one of the most complex regions for seismic survey.Being covered with thick loess,the shooting and receiving conditions are poor,resulting in severe absorption and attenuation of seismic waves as well as low signal-to-noise ratio.In order to find out Kexi-2 structure found by non-seismic prospecting,such 2D seismic acquisition techniques as array shooting,long geophone array receiving and wide-line acquisition ones are all applied in this area.The results show that the seismic profile acquired is of much higher quality than ever before,proving these techniques are effective and practicable.更多还原