埕岛油田馆上段油藏纵向水驱影响因素

针对埕岛油田特殊的地理位置和有别于陆上相似油田的开发技术政策，应用数值模拟方法，研究了纵向层间渗透率非均质和井距非均匀对油水运动规律的影响。结果表明，层间渗透率非均质和井距非均匀是影响纵向注水波及系数的重要因素，在井距和渗透率相差倍数相同的情况下，井距比渗透率对波及系数的影响更大一些。该研究对埕岛油田馆上段油藏细分开发层系和井网调整具有理论指导作用。

Analysis on influencing factors of vertical water flooding in upper Ng of Chengdao Oilfield

The effects of vertical interlayer permeability heterogeneity and variable well spaces on the flow of water and oil are studied using numerical simulation according to the special geographical position and different development technique policy compared with onshore oilfield in Chengdao Oilfield.The study suggests that the interlayer permeability heterogeneity and the variable well space are the important factors that influence the vertical waterflood sweep efficiency,and the effect of the well space is larger than that of the permeability on the sweep efficiency when the difference multiples of the well space and the permeability are the same.The research provides a guidance on fine subdivision on series of strata and well pattern adjustment in upper Ng of Chengdao Oilfield.