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塔里木盆地西南坳陷山前带勘探程度较低,是开展油气勘探的重要潜力区之一.受地表条件复杂、近地表激发条件差、目的层埋藏较深等地震地质条件的影响,研究区地震资料信噪比低、品质较差,严重地制约了地震资料解决地质问题的能力.本文在分析研究区新采集的深反射地震资料基础上,根据不同类型地区地震数据记录特点和噪声分布规律,采用“六分法”叠前去噪方法进行噪声压制,在实际资料处理中取得了较好的应用效果,中深层资料信噪比得到较大程度的改善.
Due to the low exploration level in the foreland belt in the southwest depression of Tarim Basin, it is one of the important potential areas for oil and gas exploration.Due to the influence of the seismic geological conditions such as complex surface conditions, near-surface excitation conditions and deep burial of target beds, The low signal-to-noise ratio and poor quality of the data severely restrict the ability of seismic data to solve geological problems.Based on the analysis of the newly acquired deep-reflection seismic data in the study area and according to the characteristics of seismic data recording and the noise distribution in different types of areas, The noise suppression method using the “six-point method” pre-stack denoising method has achieved good application results in the actual data processing, and the signal-to-noise ratio of the mid-deep layer data has been greatly improved.