摘要
伊犁地区多次波问题一直是限制该区石油地质研究及获得深层地震反射资料的主要干扰，有效地压制多次波是该区油气勘探获得突破的关键，本文通过对伊犁地区多次波特征的分析，选取合理的识别方法分辨一次波和多次波，在衰减多次波过程中，综合使用了反褶积、F-K滤波、τ－P变换和时变下切除等手段，在补偿深层能量处理中，采用多次自动剩余静校正迭代和随机噪音衰减等方法。利用这些方法所处理的地震剖面多次波得到有效衰减，一次波反射能量加强，真实可信，并且有一定的连续可追踪性。
The problem of multiple reflection in Yili area is always the main interference to prevent technicians from getting seismic reflections in deep area and making clear the geological conditions of petroleum reservation. The key to get breakthrough in this area's exploration is to decrease multiples effectively. In this paper, the authors select some proper methods to make clear the differences between primary and multiples by means of analyzing the characteristics of multiples in detail. In the process of multiples decreasing, the anthors take several effective techniques such as deconvolution, FK filtering, τ-P transformation, time variable internal mute and etc. In the process of energy compensation in deep area, automatic residual static and random noise decreasing are used repeatedly. By means of these methods, not only the energy of primary reflection was enhanced, but also they have better continuity and can be traced easily. The result is true and reliable.
出处
《断块油气田》
CAS
1996年第6期9-14,共6页
Fault-Block Oil & Gas Field
关键词
地震反射
多次波
反褶积
油气勘探
石油地质
Seismic reflection, Seismic profile, Multiple reflection, Deconvolution, F-K filtering,τ-P transformation, Interference
