利用小波分析技术提高老爷庙油田地震资料分辨率
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摘要
老爷庙地区的陆相沉积具有多物源、多沉积体系、水动能变化大、高频率的水进水退、相变快、断层多、断距小、储层薄且横向变化快等特点,且具多旋回、多油层等特征。本文针对该区陆相薄互层的地质特点和地震响应特征,在保持较高信噪比的前提下,给出了薄互层高分辨率分析方法和实现流程。实际地震数据处理结果表明,本文分析方法和流程可有效提高薄互层地层的地震资料分辨率,其结果可用于精细刻画薄互层型地层的空间展布,有利于进行薄储层预测。
Laoyemiao oilfield has complex continental deposit characteristics such as multi-provenance,multiple depositional systems,current energy variation,frequent transgression and regression,fast facies change,multi-faults,small displacements,thin beds and horizontally fast changes.These cause a real challenge for seismic exploration in the area.To solve the geological problems,this paper introduces a method for seismic data resolution improvement with wavelet analysis in the condition of keeping high signal-to-noise ratio data,and proposes its implementation procedure.Applications of this method to synthetical data and real field data prove its validity and effectiveness for seismic data resolution improvement of thin interbeds.Its results will be helpful to thin interbed distribution delineation and reservoir prediction.
Laoyemiao oilfield has complex continental deposit characteristics such as multi-provenance,multiple depositional systems,current energy variation,frequent transgression and regression,fast facies change,multi-faults,small displacements,thin beds and horizontally fast changes.These cause a real challenge for seismic exploration in the area.To solve the geological problems,this paper introduces a method for seismic data resolution improvement with wavelet analysis in the condition of keeping high signal-to-noise ratio data,and proposes its implementation procedure.Applications of this method to synthetical data and real field data prove its validity and effectiveness for seismic data resolution improvement of thin interbeds.Its results will be helpful to thin interbed distribution delineation and reservoir prediction.
引文
[1]王兆峰,金振奎,汪焰等.冀东老爷庙地区古近系东营组沉积相对储层质量的控制作用.石油天然气学报,2009,31(5):174～177Wang Zhaofeng,Jin Zhenkui,Wang Yan et al.Thecontrolled reservoir quality function of sedimentaryfaces of Ed formation in Laoyemiao region.Journal ofOil and Gas Technology,2009,31(5):174～177
[2]路鹏飞,郭爱华,朱德献等.薄互层高分辨率分析方法研究.石油天然气学报,2010,32(3):69～72Lu Pengfei,Guo Aihua,Zhu Dexian et al.The tech-nique of high resolution analysis in the thin inter-bed-ded layers.Journal of Oil and Gas Technology,2010,32(3):69～72
[3]刘国昌,陈小宏,杜婧等.基于整形正则化和S变换的Q值估计方法.石油地球物理勘探,2011,46(3):417～422Liu Guochang,Chen Xiaohong,Du Jing et al.SeismicQestimation using S-transform with regularized inver-sion.OGP,2011,46(3):417～422
[4]李学英,候相辉.基于广义S变换的叠前高频噪声压制.石油地球物理勘探,2011,46(4):545～549Li Xueying,Hou Xianghui.Prestack high frequencynoise suppression based on generalized S transform.OGP,2011,46(4):545～549
[5]杨勇强,邱隆伟,陈世悦等.基于小波能量谱系图及小波曲线的层序地层划分.石油地球物理勘探,2011,46(5):783～789Yang Yongqiang,Qiu Longwei,Chen Shi-yue et al.Sequence stratigraphy identification based on waveletenergy spectrum and wavelet curve.OGP,2011,46(5):783～789
[6]张华,陈小宏,杨海燕.地震信号去噪的最优小波基选取方法.石油地球物理勘探,2011,46(1):70～75Zhang Hua,Chen Xiaohong,Yang Haiyan.Optimisticwavelet basis selection in seismic signal noise elimina-tion.OGP,2011,46(1):70～75
[2]路鹏飞,郭爱华,朱德献等.薄互层高分辨率分析方法研究.石油天然气学报,2010,32(3):69～72Lu Pengfei,Guo Aihua,Zhu Dexian et al.The tech-nique of high resolution analysis in the thin inter-bed-ded layers.Journal of Oil and Gas Technology,2010,32(3):69～72
[3]刘国昌,陈小宏,杜婧等.基于整形正则化和S变换的Q值估计方法.石油地球物理勘探,2011,46(3):417～422Liu Guochang,Chen Xiaohong,Du Jing et al.SeismicQestimation using S-transform with regularized inver-sion.OGP,2011,46(3):417～422
[4]李学英,候相辉.基于广义S变换的叠前高频噪声压制.石油地球物理勘探,2011,46(4):545～549Li Xueying,Hou Xianghui.Prestack high frequencynoise suppression based on generalized S transform.OGP,2011,46(4):545～549
[5]杨勇强,邱隆伟,陈世悦等.基于小波能量谱系图及小波曲线的层序地层划分.石油地球物理勘探,2011,46(5):783～789Yang Yongqiang,Qiu Longwei,Chen Shi-yue et al.Sequence stratigraphy identification based on waveletenergy spectrum and wavelet curve.OGP,2011,46(5):783～789
[6]张华,陈小宏,杨海燕.地震信号去噪的最优小波基选取方法.石油地球物理勘探,2011,46(1):70～75Zhang Hua,Chen Xiaohong,Yang Haiyan.Optimisticwavelet basis selection in seismic signal noise elimina-tion.OGP,2011,46(1):70～75
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