中高含水期油藏剩余油潜力定量化评价新方法及其应用

A new method for quantitatively evaluating the remaining oil potential of reservoir at medium-high water-cut stage and its application

针对目前中高含水期剩余油定量化表征存在的问题,基于三维精细数值模拟模型,提出了利用优势生产潜力定量化表征中高含水期剩余油分布潜力的方法。该方法计算简单,且考虑了油藏储量丰度、油藏压力、地层渗透性、距边界距离和油气水关系位置对产能的影响。实例计算表明,相对于剩余油储量丰度法和剩余油优势潜力丰度法,使用该方法能够较为准确地找到剩余油优势潜力部位,制定较好的剩余油调整挖潜方案。

Aiming at the problems existing in the quantitative characterization of remaining oil at the medium- high water- cut stage,it is put forward the predominant production potential to quantitatively characterize the potential of the remaining oil distribution at the medium- high water- cut stage based on the 3D fine numerical simulation model. The method is not only simple,but also considers the effect of the reservoir reserves abundance,the reservoir pressure,the formation permeability,the distance to boundary,and the location among oil,gas and water on productivity. The calculation example shows that compared with the methods of remaining oil reserves abundance and abundance of predominant potential,this method can more accurately find the areas of predominant remaining oil potential and make better schedule in adjustment and exploitation of remaining oil.