预测高陡复杂断块岩性油藏产油量的一种新模型

发布时间：2018-03-05 11:08

本文选题：高倾角复杂岩性油藏　切入点：二项式公式　出处：《大庆石油地质与开发》2017年06期 　论文类型：期刊论文

【摘要】：现有产量预测方法,尤其是Arps递减方程在国内外油田得到广泛应用,有效指导了油田开发。但所应用油田一般规模较大,地层倾角较小,而且一般都是在高含水—特高含水阶段应用。现有产量预测方法多数基于历史产油量数据的拟合进行预测,产量数据越多,油田规模越大、地质情况越简单,准确率越高。对处于中低含水阶段的高倾角复杂岩性油藏,没有开发指标预测应用实例。从基本渗流理论出发,通过应用二项式公式表征油相相对渗透率随含水饱和度的变化规律,拟合砂岩、砂砾岩储层,达到较好效果,同时将油水相对渗透率融入产油量预测模型,使模型具备严格的渗流理论基础,结合重力校正系数,可以准确预测高倾角复杂岩性油藏产油量。在已开发区块应用情况表明,新方法预测精度在90%以上,能够用于产油预测。
[Abstract]:The existing production prediction methods, especially the Arps decline equation, have been widely used in oil fields at home and abroad, which have effectively guided the development of oil fields, but the applied oilfields are generally larger in scale and smaller in formation dip angle. Most of the existing production forecasting methods are based on the fitting of historical oil production data. The more the production data, the larger the oilfield scale and the simpler the geological situation. For complex lithologic reservoirs with high dip angle in middle and low water cut stage, there is no application example of development index prediction. Based on the basic percolation theory, By using binomial formula to characterize the law of oil phase relative permeability changing with water saturation, the sandstone and gravel reservoirs are fitted to achieve better results. Meanwhile, the relative permeability of oil and water is integrated into the oil production prediction model. The model has strict percolation theory foundation, combined with gravity correction coefficient, the oil production of complex lithologic reservoirs with high dip angle can be accurately predicted. The application of the new method in developed blocks shows that the prediction accuracy of the new method is more than 90%, and it can be used to predict oil production.
【作者单位】：大庆油田有限责任公司海拉尔石油勘探开发指挥部;大庆油田有限责任公司勘探开发研究院;
【分类号】：TE328

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