频谱分解技术在勘探中的应用

A Review on the Application of Spectral Decomposition in the Exploration

基于频谱分解方法的认识和应用研究,综述了频谱分解技术在层序地层分析、沉积储层预测、小断层解释及烃类检测和时移地震监测研究中的应用。在国内外地质勘探实例研究的基础上,总结了在研究层序地层分析、沉积储层预测、烃类检测及时移地震监测领域中应用的频谱分解技术方法。研究分析表明:频谱分解在不同的频带上显示不同级别地质现象,是研究层序地层、沉积储层及小断层解释的有效手段;频谱分解在不同频带显示对烃类不同的响应,是实现烃类检测和时移地震监测的重要手段。随着勘探精度、流体检测和剩余油气挖潜的形势需求,提高频谱分解方法的精度和分辨率以及在各种地质情况下的应用试验,将会不断促进方法研究和实际应用效果改善。

Based on the understanding and the research on application of spectral decomposition methods,a review is made for the application of spectral decomposition on the sequence stratigraphic analysis,depositional reservoir prediction,tiny faults interpretation,hydrocarbon detection and time-lapse seismic monitoring.On the basis of domestic and abroad geologic exploration instances,methods of spectral docomposition are summarized which have been applied to the domain of sequence stratigraphic analysis,depositional reservoir prediction,hydrocarbon detection and time-lapse seismic monitoring.Studies and analysis are shown that： spectral decomposition displays geological phenomena of different levels at the different frequence bands,which is an effective means of studying sequence stratigraphy,depositional reservoir and tiny faults interpretation;spectral decomposition displays different responses for hydrocarbon at the different frequence bands,which is an important means of implementation hydrocarbon detection and time-lapse seismic monitoring.With the situation demands of exploration precision,fluid detection,and the remaining oil and gas potential,improving the accuracy and resolution of spectral decomposition and testing the application under various geological conditions,will continuously promote the methods of research and improve practical application effects.