平滑Wigner-Ville谱分解技术在储层预测中的应用  

Application of decompositon techique of smooth Wigner-Ville spectral in reservoir prediction

作　　者：李丛[1] 韩立国[1] 李金泉[1] 巩向博[1] 

机构地区：[1]吉林大学地球探测科学与技术学院,长春130026

出　　处：《世界地质》2012年第4期813-818,共6页World Geology

基　　金：国家科技重大专项子课题"少井或无井条件下小波域储层流体识别方法研究"(2011ZX05025-001)

摘　　要：通过Wigner-Ville分布和平滑Wigner-Ville分布的模拟信号对比,表明平滑Wigner-Ville分布可以自适应的调节窗口长度,成为一种有效地消除交叉项的方法。为有效提取低频信息进行储层预测,我们利用基于平滑Wigner-Ville的谱分解技术预测油气,针对含油气储层引起地震波高频能量衰减和低频能量增强的特点,将平滑Wigner-Ville分布应用到某工区进行叠后资料处理,通过谱分解不同频率的切片响应,得到目的层段上的低频异常现象,表明基于高分辨率平滑Wigner-Ville分布的地震谱分解技术能够更好地表征目的层的油气分布情况。Making a comprasion of the analog signal contrast of Wigner-Ville distribution with those of smooth Wigner-Ville distribution,it is shown that the smooth Wigner-Ville distribution can adjust the window length,which beacomes an effective method to eliminate the cross terms.For reservoir prediction based on the effective extraction with the low-frequency information,we use the smooth Wigner-Ville spectral decomposition technique for prediction of oil and gas reservior,and by making seismic waves of high energy attenuation and low-frequency energy enhancement features.Then we apply the smooth Wigner-Ville distribution in the working area for post-stake data processing,through the different frequency slice response of spectrum decomposition,and get the abnormal phenomenon of low frequency in target layer.The results show that based on high resolution smooth Wigner-Ville distribution,can point out thin layer better.

关 键 词：WIGNER-VILLE分布 平滑Wigner-Ville分布 谱分解技术 储层预测 切片响应 低频异常现象 

分 类 号：P631.4[天文地球—地质矿产勘探]