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从目前国内外已发现的礁滩油藏的分析研究结果表明,礁滩油藏具有的共同特征是原始地质储量大(多属大型油田级别),储层渗透率高(多属高渗储层级别)和连通性好的底水油藏。此外,从油藏工程角度大体可分两类,即具有底水、高粘度原油的低饱和礁滩油藏和具有底水、低粘度原油低饱和礁滩油藏。本文介绍的利比亚Intisar“D”油藏是具有底水、低粘度原油的低饱和礁滩油藏。该油藏采取顶部注气、中部采油和底部注水的开发方式。实际采收率已达56%,用模型拟合12年实际生产动态研究之后,预测最终采收率可
According to the analysis of the reef bank reservoirs discovered at home and abroad, the results show that the reef bank reservoirs have the common feature of large original geological reserves (mostly for large oilfields) and high reservoir permeability (mostly high permeability reservoirs Level) and well-connected bottom water reservoir. In addition, there are generally two types of reservoirs from the perspective of reservoir engineering: low-saturation reef bank reservoirs with bottom water and high-viscosity crude oil, and low-reef low-reserve reef bank reservoirs with bottom water and low-viscosity crude oil. This article describes the Libyan Intisar “D ” reservoir as a low-saturation reef bank reservoir with bottom water and low viscosity crude oil. The reservoir adopts top gas injection, middle oil recovery and bottom water injection. The actual recovery rate has reached 56%. After modeling the 12-year actual production dynamic study, the predicted ultimate recovery rate can be