中东H油田不同注入水对储层渗流能力的影响

发布时间：2018-04-30 14:15

本文选题：注入水 + 渗流能力　；参考：《油气地质与采收率》2017年02期

【摘要】：为了分析油田不同注入水对储层渗流能力的影响,利用中东H油田岩心样品,分别采用模拟地层水和注入水A进行单相及油水两相渗流实验,对比分析实验结果并对其用数学模型进行描述。结果表明:注入水A的冲刷等作用引起岩心样品发生固体颗粒脱落及矿物成分流失,导致岩心样品的渗流能力增强,油、水绝对渗透率及油水绝对渗透率之和均增加;岩心样品的亲油性减弱,亲水性增强,残余油饱和度降低,共渗点偏右移,与模拟地层水驱替相比驱油效率提高2%~5%。基于实验结果建立了数学模型,该模型能更准确地描述油田开发初期、中期及末期3个阶段的油水渗流规律。
[Abstract]:In order to analyze the influence of different injected water on reservoir percolation ability, single phase and oil-water two-phase percolation experiments were carried out with simulated formation water and injected water A in the core samples of Middle East H oilfield. The experimental results are compared and described by mathematical model. The results show that the erosion of injected water A results in the loss of solid particles and mineral composition in core samples, which leads to the enhancement of the percolation ability of core samples, and the increase of the absolute permeability of oil and water and the sum of absolute permeability of oil and water. The hydrophilicity of core samples is weakened, hydrophilicity is enhanced, residual oil saturation is decreased, the common permeability point is shifted to the right, and the displacement efficiency is 2 / 5 higher than that of simulated formation water displacement. Based on the experimental results, a mathematical model is established, which can more accurately describe the oil-water seepage patterns in the initial, middle and final stages of oilfield development.
【作者单位】：中国石油勘探开发研究院廊坊分院;中国科学院大学渗流流体力学研究所;中国石油勘探开发研究院;
【基金】：中国石油“十二五”重大科技专项子课题“中东地区碳酸盐岩油藏整体优化部署及提高采收率技术研究与应用”(11.2011E-2501.X.01)
【分类号】：TE357.6;TE312

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