常用时频分析方法的瞬时Teager主能量储层检测对比研究  

Comparative study of instantaneous Teager main energy reservoir detection using time-frequency analysis methods

作　　者：田琳 张家声 胡津健 TIAN Lin;ZHANG Jiasheng;HU jinjian(College of Electronics and Engineering,Yili Normal University,Yining 835000,Xinjiang,China;Key Laboratory of Vibration Signal Capture and Intelligent Processing,Yili Normal University,Yining 835000,Xinjiang,China;Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065000,Hebei,China;Hebei Key Laboratory of Seismic Disaster Instrument and Monitoring Technology,Langfang,065000,Hebei,China)

机构地区：[1]伊犁师范大学电子与工程学院,新疆伊宁835000 [2]伊犁师范大学振动信号俘获及智能处理校级重点实验室,新疆伊宁835000 [3]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000 [4]河北省地震灾害仪器与监测技术重点实验室,河北廊坊065000

出　　处：《城市地质》2023年第4期84-90,共7页Urban Geology

基　　金：伊犁师范大学基金项目(22XKZZ22,YSXSGG22006);国家自然科学基金(61761043)联合资助

摘　　要：地震谱分解技术能够从地震数据中提取丰富的地质信息,当层位中含有储层时,能量衰减就会出现“高频衰减,低频共振”的异常现象,瞬时Teager主能量这一地震属性能增强这种能量衰减异常现象,更有效地突出油气区域。首先利用测试信号对比分析了短时傅里叶变换、小波变换、S变换、Wigner-Ville变换、平滑伪Wigner-Ville变换的时频聚集性;然后利用短时傅里叶变换、小波变换、S变换、Wigner-Ville变换、平滑伪Wigner-Ville变换获得实际数据的时频表示,再利用时频表示计算地震数据的单频瞬时Teager能量和瞬时Teager主能量,并比较了不同时频分析方法的瞬时Teager主能量在储层预测方面的性能。研究结果表明基于平滑伪Wigner-Ville变换的瞬时Teager主能量储层预测效果最好,可以有效地区分储层和岩石层。Seismic spectral decomposition technology can extract rich geological information from seismic data.When a layer contains reservoirs,the energy attenuation will exhibit an abnormal phenomenon of“high frequency to attenuate and low frequency to resonate”.The seismic attribute of instantaneous Teager main energy can enhance this energy attenuation and more effectively highlight oil and gas regions.In this paper,firstly,the time-frequency concentration of short-time Fourier transform,wavelet transform,S-transform,Wigner-Ville transform,and smooth pseudo Wigner-Ville transform are compared and analyzed using test signals.Then,the time-frequency representation of the real data is obtained using short-time Fourier transform,wave-let transform,S-transform,Wigner-Ville transform,and smooth pseudo Wigner-Ville transform.Finally,the single-frequency instantaneous Teager energy and instantaneous Teager main energy of seismic data are calculated using the time-frequency representation.And the performance of the instantaneous Teager main energy of different time-frequency analysis methods for reservoir prediction are compared.The research results show that the instantaneous Teager main energy reservoir prediction based on smooth pseudo Wigner-Ville transform produces the best effect and can effectively distinguish between reservoir and rock layers.

关 键 词：非线性能量分析 储层预测 瞬时Teager主能量 平滑伪Wigner-Ville分布 

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