提高黄土塬地震资料信噪比的方法研究  

A method for improving the signal-to-noise ratio of the seismic data of loess tableland and its application effect

作　　者：高雪侠[1] 彭朝全[1] 付守献[1] 杨志军[1] 周夏丽[1] 

机构地区：[1]中国石油集团东方地球物理勘探有限责任公司研究院长庆分院,陕西西安710021

出　　处：《西安石油大学学报（自然科学版）》2011年第6期37-41,8,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

摘　　要：以鄂尔多斯盆地西南部巨厚黄土塬区地震勘探为例,针对黄土塬地震资料信噪比低的特点,以中生界与古生界砂岩储层预测和古地貌刻画为目标,通过对影响地震资料信噪比的因素分析和不同去噪技术的研究,提出了适应黄土塬区提高地震资料信噪比的有效方法,并在实际应用中取得了良好的效果.Taking the seismic exploration of the loess tableland of huge thickness in the southwestern Erdos Basin as an example,the factors of influencing the signal-noise ratio of the loess tableland seismic data are analyzed in order to predict the reservoir characteristics of Mesozoic and Paleozoic and describe their paleogeomorphology,and a series of denoising methods are proposed,including united static correction,surface consistency remaining fine correction,high-precision velocity analysis,multi-area or multi-area alternating noise suppression and coherent superposition.These methods are very effective to improving the seismic data signal-to-noise ratio in the loess tableland area.The practical application in the loess tableland of huge thickness in the southwestern Erdos Basin achieved good effect.

关 键 词：黄土塬 地震资料处理 信噪比 鄂尔多斯盆地 地震勘探 

分 类 号：TE132.14[石油与天然气工程—油气勘探] P631.4[天文地球—地质矿产勘探]