Prestack gathers feature enhancement method based on BEMD and CTKEO  

作　　者：Xudong Jiang Junxing Cao ShaoChen Shi Zhaodong Su Tao Xiang 

机构地区：[1]The State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu,China

出　　处：《Earthquake Research Advances》2021年第S01期63-65,共3页地震研究进展（英文）

基　　金：sponsored by the National Natural Science Foun-dation of China(No.41974160,41774192,41430323).

摘　　要：The hydrocarbon detection method based on pre-stack gather data has higher accuracy and reliability than those methods based on post-stack data.This kind of method requires that pre-stack gather data have high SNR(Signal Noise Ratio)and obvious AVO(amplitude variation with offset)characteristics.Therefore,it is important to optimize the pre-stack gathers and enhance their AVO(Amplitude variation with offset)effect.This abstract proposes a gather optimization and AVO feature enhanced method for hydrocarbon detection.The gather optimization method based on the improved BEMD(bidimensional empirical mode decomposition).It starts from the original signal directly,and can be optimized as pre-stack gather steadily and quickly.Then,the characters of CTKEO(Corss Teager-Kaiser energy)algorithm which is strong sensitivity to interaction of two signals is fully utilized to enhance AVO features.The method proposed in this abstract provides a good data base for pre-stack inversion from gather optimization to AVO feature enhancement.

关 键 词：Prestack gather BEMD CTKEO AVO 

分 类 号：P618.13[天文地球—矿床学] P631.4[天文地球—地质学]