【摘要】 为了提高准噶尔盆地低幅度构造区及山地复杂区的成图精度,用多种速度研究方法对准噶尔盆地的速度分布规律进行了研究,初步取得了一些成果。本文分析了影响速度精度的关键因素,认为野外采集参数、静校正方法和校静正量、处理流程、地表条件、地震及地质资料等因素决定了速度的精度。并提出了复杂构造速度研究的思路、方法和流程。首次采用了多项关键技术,在盆地腹部沙漠区和南缘复杂构造区展开三维模型精细速度研究,进行变速成图,为识别低幅度及山地复杂区的圈闭提供了依据。更多还原

【Abstract】 In order to improve the mapping precision for low-amplitude structural zone and complex mountainous area in Junggar basin, we used multi-velocity study method to carry out study on velocity distribution rule in Junggar basin and achieved primary results. The paper analyzed the key factors affecting the velocity precision, considered that acquisition parameters in the field, static correction method and values, processing factors, surface conditions and seismic and geologic data determined the velocity precision and presented idea, method and flow studying velocity in complex structural area, which adopted multiple key techniques in first time, developed fine velocity study of 3D model in desert area of basin hinterland and in complex structural area of south margin, implementing the velocity-variant mapping, which provided the foundation for identifying low-amplitude traps and traps in complex mountainous area.更多还原