叠前地震属性在河流相储层预测中的应用——以新北油田为例

详细信息

收稿日期: 2010-09-21

APPLICATION OF PRE-STACK SEISMIC ATTRIBUTES IN FLUVIAL RESERVOIR PREDICTION-TAKING THE XINBEI OILFIELD AS AN EXAMPLE

Received Date: 21 September 2010

摘要: 针对新北油田强反射是否为有效储层的问题,在基于新北油田河流相储层具备开展叠前地震属性研究的基础上,对叠前道集数据进行了精细的速度分析、保幅叠前时间偏移处理,使能量更集中,道集资料信噪比更高,远近道时差小且同相性更好。根据不同角度道集所反映的地层结构和流体信息不同的特点,利用远近道集振幅差预测储层的含油气性,在新北油田油田馆陶组上段4砂组的应用,取得了良好的应用效果。
- 叠前道集 /
- 角度道集 /
- 振幅差 /
- 流体识别
Abstract: It remained a question if the strong reflection of seismic data in Xinbei oilfield is an effective reservoir.Detailed velocity analysis and amplitude-preserved pre-stack processing for time migration were carried out for higher energy,higher SNR,smaller offset for nearer and distant gathers and better isophase coincidence in the fluvial reservoir in Xinbei oilfield.According to the stratigraphic architecture and fluid information from different angle gathers,we used the amplitude difference between nearer and distant offset gathers in the sandstone of the unit 4 of the upper member of Guantao Formation.Results show that the method is effective in prediction of hydrocarbon potential in the reservoirs.
- pre-stack gathers /
- angle gathers /
- amplitude difference /
- fluid identification