论文部分内容阅读
本文主要阐述藏北羌塘盆地龙尾错区块的二维反射地震试验的数据采集和处理的过程。分析两条剖面的反射特征,并对叠加剖面进行了初步解释:羌塘盆地中央隆起北侧存在大规模的深凹陷构造;盆地浅部不同方向的构造变形存在较大差异;出现较强的基底反射特征;中生代、古生代地层的反射特征差异较大。文中尝试对数据处理过程中的叠加速度变化进行研究,获得了与叠加剖面较一致的结果,并进一步对某探井的构造背景提出见解。
This paper mainly expounds the data acquisition and processing of two-dimensional reflection seismic tests of the Longtailou block in the Qiangtang basin, northern Tibet. The reflection features of the two sections are analyzed and the superimposed sections are preliminarily explained. Large-scale deep-depression structures exist in the northern part of the central uplift of the Qiangtang basin. There is a great difference in tectonic deformation in different directions in the shallow part of the basin. Reflection characteristics; Mesozoic, Paleozoic strata reflect the characteristics of the larger differences. In this paper, we try to study the changes of superposition velocity during the data processing, obtain more consistent results with the superimposed sections, and further provide some insights on the structural background of an exploration well.