Abstract：In high-resolution seismic exploration, apart from reflecting the underground sequential interfaces in different levels, seismic frequency attribute also includes sequence-internal structural information. Using time-frequency filtering technique to study the relationship between the frequency attribute character of seismic traces and sequence-internal structures can improve identified precision of sequence strata. The study showed that the frequency value in time domain, energy of frequency cluster, variation of time thickness of frequency branch and its branched structure,lateral spreading regularity and array pattern and formation of multi-periodic time-frequency sequences have obviously corresponding relationship with stratigraphic attributes and sedimentary cycle. Directly using the variety of characters of frequency attributes can more reasonably divide different kinds of multi-periodic and multi-cyclic time-frequency sequences at a different angle,which can more accurately identify lower levels of sequential details and realize high-precise prediction of thin beds.
夏竹, 刘超颖, 魏文博, 任敦占, 郎克让, 陈耿毅, 王玉柱. 地震道时间域频率属性特征和地层层序划分[J]. 石油地球物理勘探, 2005, 40(5): 550-560.
Xia Zhu, Liu Chaoying, Wei Wenbo, Ren Dunzhan, Lang Kerang, Chen Gengyi, Wang Yuzhu. Frequency attributes characters of seismic traces in time domain and division of stratigraphic sequence. OGP, 2005, 40(5): 550-560.
