摘要
时频分析技术在油气检测中占有及其重要的地位,它能够在时间域和频率域同时表示地震信息,使得在时间域内难以得到的地震信息在时频域内能十分清晰显示出来。传统的时频理论有着自身难以克服的缺陷,且难以同时提高时间分辨率和频率分辨率,研究选用高精度的时频分析方法——S变换。通过S变换时频分析,得到共单频属性剖面,结合全频段原始剖面,探讨了使用共单频属性剖面进行地震相分析,最后用该方法预测长兴组生物礁中储层分布,结果与实际钻进符合较好。
It was important of time-frequency analytical technique in predicting reservoir,and in expressing the seismic information in time domain and frequency domain at the same time.The seismic information was expressed in time-frequency domain,and was not expressed in time domain.High-accuracy time-frequency analysis method S-transform was selected because traditional time-frequency theory could not overcome the difficult and develop time resolution and frequency resolution difficulty.The flow applying S-transform time-frequency analysis method is discussed as it is used for predicting organic reservoirs,and the result is in accordance with actual drilling.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2009年第1期53-56,391,共4页
Journal of Oil and Gas Technology
关键词
时频分析
S变换
油气检测
time-frequency transform
S-transform
oil and gas detection
