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本文综合分析了见诸国外文献的18种二氧化碳驱油最小混相压力预测方法的应用条件。不同油田的原油性质不同,要得到符合实际的最小混相压力预测值,必须根据应用条件认真选用适合本油田原油的预测公式。本文在分析对比各种公式的基础上,找出了适用于预测大庆油田石蜡基原油与二氧化碳最小混相压力的Silva方法。
This paper comprehensively analyzes the application conditions of 18 minimum miscible pressure prediction methods for CO2 flooding seen in foreign literature. Different oil fields have different crude oil properties. To get the actual minimum miscibility pressure prediction value, the prediction formula suitable for crude oil in this oil field must be carefully selected according to the application conditions. Based on the analysis and comparison of various formulas, this paper finds a Silva method suitable for predicting the minimum miscibility pressure of paraffinic crude oil and carbon dioxide in Daqing Oilfield.