关键词: 化学驱, 复配碱, 数值模拟, 化学反应, 模型

Abstract: Based on analyzing the effect of the alkali on Daqing crude oil of low acid content during Alkali /Surfactant /Polymer (ASP) flooding,the chemical reaction is discussed for single alkali and compound alkali during ASP flooding.How to calculate the acidity composition in the oil-water balance was studied with consideration of the effect of phosphate in compound alkali on alkali consumption and chemicals consumption.We have dealt with the problem about compound alkali with a simulator of the alkali flooding for the first time.The result,which is from simulating the single alkali flooding in middle west of Daqing Oilfield and the compound alkali flooding in Sanan Oil field pilot test,shows that compound alkali can remarkably improve the efficiency of ASPflooding.The methods mentioned in this paper will play an important role in ASP flooding.

Key words: chemical drive, compound alkali, numerical simulation, chemical reaction, model