Abstract:The "magnetic bright spot" appeared in hydrocarbon-penetrated alteration zone is a new developed direct hydrocarbon detector technology in recent years and along with this many new methods used for detection of "magnetic bright spot" appeared.The paper mainly discussed the method of high-order statistics aimed at picking up "magnetic bright spot".The paper mainly studied the high-order-statistics-related natures and proved theoretically that high-order statistics not only totally suppressed the impact of Gauss color noises in signal,but also provided phase information the power spectrum haven’t,which showed that the high-order statistics is more superior to power spectrum method.The paper also analyzed the statistic characters of "magnetic bright spot" produced by hydrocarbon-penetrated alteration zone and showed the feasibility using high-order statistics for detection of "magnetic bright spot".Finally,the method is used to pick up umagnetic bright spot" from aeromagnetic data in Bayanhaot basin.The results showed the high-order statistics method is similar to width amplitude character filtering method but has better results.The high-order statistics method can find wide application in geophysical signal analysis.
杨宇山, 李媛媛, 刘天佑. 高阶统计量在地震弱信号及"磁亮点"识别中的应用[J]. 石油地球物理勘探, 2005, 40(1): 103-107.
Yang Yu-shan, Li Yuan-yuan, Liu Tian-you. Application of high-order statistics to identify weak seismic signal and "magnetic bright spot". OGP, 2005, 40(1): 103-107.