频率信息在埕岛东部古近系滨浅湖滩坝储层预测中的应用

Application of the frequency information in the prediction of Paleogene beach bar reservoir in the east of Chengdao area

滩坝油藏是目前备受关注的油藏类型。受地质认识、地球物理手段等方面的限制,常规地震资料及物探技术很难解决滩坝油藏储层描述中的多解问题。针对埕岛地区不同类型的滩坝储层,依托纯波地震资料,利用不同域下的频率信息对滩坝油藏储层进行预测。研究表明,以地质认识为基础,结合古地貌分析,利用分频等手段可以识别包含于不整合面强反射内部的储层反射,对目前滩坝油藏勘探具有一定的指导意义。

The beach bar reservoir is a very interested type of reservoir at present. It is difficult to solve the multi-solution problem in reservoir description of beach bar reservoir by using the conventional seismic data and geophysical exploration techniques as the limited understanding of geology and geophysical techniques. Based on the pure wave seismic data, the different types of the beach bar reservoir in Chengdao area can be predicted exactly by the frequency information in different domains. The result shows that the reservoir reflection included in the strong reflection of surface of unconformity can be recognized by the frequency division based on the understanding of the geology and the palaeogeomorphology, it can provide a guidance to the beach bar reservoir exploration.