Surface interference in geochemical exploration of hydrocarbons in Jindong-Liuqiao area of Dongying depression and its elimination
ZHAO Ying-Quan1, ZHANG Liu-Ping2, ZHOU Ai-Hong3
1. State Key Laboratory for Oil and Gas Reservoir Geology and Development Engineering, Chengdu University of Technology, Chengdu 610059, China;
2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;
3. Daqing Oilfield Co., Ltd. Exploration and Development Institute, Daqing 163712, China
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 anomalies mainly reflect the underground hydrocarbon reservoir information.
赵应权, 张刘平, 周爱红. 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[J]. 物探与化探, 10.11720/wtyht.2014.5.35.
ZHAO Ying-Quan, ZHANG Liu-Ping, ZHOU Ai-Hong. Surface interference in geochemical exploration of hydrocarbons in Jindong-Liuqiao area of Dongying depression and its elimination. Geophysical and Geochemical Exploration, 2014, 38(5): 1070-1075.
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