丘陵油田陵二区三间房组油藏剩余油分布规律

A study on the distribution rule of the remaining oil of Sanjianfang reservoir in west Ling 2 area, Qiuling Oilfield

目的对丘陵油田陵二区三间房组注水开发生产状态下的剩余油分布做进一步的分析研究。方法以地质研究成果为基础,结合生产动态资料,运用动态分析等方法对丘陵油田陵二区三间房组油藏的剩余油进行研究。结果受地质因素和生产状况双重作用的控制和影响,纵向上三间房油层组顶部动用程度差,剩余油相对富集,中下部动用程度高,剩余油饱和度低;平面上剩余油主要分布在主相带的侧翼、断层附近、注水井间压力平衡区和采油井之间的死油区。结论为加密井井网调整提出理论指导,最终达到稳产、增产,提高采收率的目的。

Aim To meke a further study and analysis of remaining oil distribution of Sanjianfang formation in Qiuling Oilfield under the stage of waterflood development.Methods Through the way of dynamic analysis, study and analyze the remaining oil of Sanjianfang reservoir in west Ling 2 area, Qiuling Oilfield, with geological and performing data.Results Owing to the factors of geology and performance in vertical section, the remaining oil accumulated mainly at the top of Sanjianfang reservoir, and the saturation of the remaining oil is lower in middle and bottom parts. In horizontal section, the remaining oil distributes mainly in areas including the lateral area of main facies, the vicinity of the faults, the pressure balanceable area between the water wells, and the immobile oil area between the oil wells.Conclusion The site of dense wells would be set down, performentce will be guided, output stabilized, output increased and recover ratio improved based on this study.