东营凹陷金东—柳桥地区油气化探数据中的地表干扰与排除  

Surface interference in geochemical exploration of hydrocarbons in Jindong-Liuqiao area of Dongying depression and its elimination

作　　者：赵应权[1] 张刘平[2] 周爱红[3] 

机构地区：[1]成都理工大学油气藏地质及开发工程国家重点实验室,四川成都610059 [2]中国科学院地质与地球物理研究所,北京100029 [3]大庆油田勘探开发研究院,黑龙江大庆163712

出　　处：《物探与化探》2014年第5期1070-1075,共6页Geophysical and Geochemical Exploration

基　　金："油气藏地质及开发工程"国家重点实验室开放基金项目(PLC201102);国家科技重大专项项目(2008ZX05008-004-20)

摘　　要：东营凹陷南斜坡金东—柳桥地区地表条件复杂,化探信号干扰强烈,造成假异常大面积出现。在对金东—柳桥地区油气化探数据中干扰类型识别的基础上,用Mallat小波分析法,发现分析尺度为3时的连续序列呈现出地表干扰信息,由此进行了地表干扰排除。经过封盖条件校正与异常识别,获得了该区油气化探异常。干扰排除后的异常与断层、圈闭及已发现的油气藏或油气显示相吻合,表明这些异常主要反映的是地下油气藏信息。In Jindong-Liuqiao area on the southern slope of Dongying Depression, large-area false anomalies emerge from geochemical signals because of strong interference caused by complicated surface conditions. The types of the surface interference were recognized firstly in this area. On such a basis, the geochemical signal was analyzed with Mallat wavelet and the scale 3 continuous sequence reflecting the surface interference was detected and eliminated. The micro-seepage and seepage anomalies for geochemical hydrocarbon exploration of this area were obtained on the basis of the correction of sealing conditions. The anomalies are consistent with faults, traps and hydrocarbon reservoirs already found or the hydrocarbon shows after the interference elimination, which suggests that these anoma- lies mainly reflect the underground hydrocarbon reservoir information.

关 键 词：油气化探 地表干扰 Mallat小波分析 异常识别 消除干扰 

分 类 号：P632[天文地球—地质矿产勘探]