震源及电缆沉放深度对海上地震资料的影响  

THE IMPACT OF SEISMIC SOURCE AND CABLE SINKING DEPTH ON MARINE SEISMIC DATA

作　　者：钟明睿[1,2,3] 朱江梅[2,3] 杨薇[2,3] 袁全社[4] 覃殿明[2,3] 

机构地区：[1]吉林大学地球探测科学与技术学院,吉林长春130026 [2]中国海洋石油总公司 [3]中海油能源发展股份有限公司钻采工程研究院,广东湛江524057 [4]中国海洋石油有限公司湛江分公司,广东湛江524057

出　　处：《物探与化探》2012年第1期78-83,88,共7页Geophysical and Geochemical Exploration

基　　金：中海油能源发展科技项目"海上多方位角地震资料处理方法研究"(HFKJ-CJF1107)

摘　　要：通过对南海某工区不同采集参数采集的地震数据的分析,就海上拖缆地震勘探中震源及电缆的沉放深度对采集数据质量影响进行讨论,得出如下结果:震源沉放越浅,子波频带变宽,高频效果越好;电缆沉放深度越浅,频带越宽,分辨率越高,但受风浪影响的噪声比较大。这为地震资料采集和后续的地震资料处理提供了良好的依据。Based on an analysis of seismic data collected with different acquisition parameters in a work area of the South China Sea,this paper deals with the impact of the sinking depths of seismic source and cable on the quality of collected data in marine tow seismic exploration.The results are as follows： the shallower the seismic source sinking depth,the better the high frequency effect with the broadening wavelet frequency band;the shallower the cable sinking depth,the broader the frequency band,and the higher the resolution ratio,but with rather high noise resulting from stormy waves.The results obtained provide good basis for seismic data acquisition and subsequent seismic data processing.

关 键 词：震源沉放深度 电缆沉放深度 振幅谱 

分 类 号：P631.4[天文地球—地质矿产勘探]