水驱油物模试验及原油在水驱过程中组分变化的分析研究

长岩心水驱油实验是在最新研制的可动胶驱替流程上进行的,该实验模拟江河区注水开发条件,通过321h18min的连续水驱试验,取样32个,对样品进行原油组分、轻烃分析。证实了注水开发油层中原油的一切物理性质变化都是由原油组成变化即质的变化引起的;轻烃组分对水洗敏感,在水洗作用下减小最快,使用苯、甲苯及其同碳数烷烃之间的比值,可以用来判别油层水淹程度;沥青A、族组分分析和轻烃分析是评价油层水淹、水洗程度的有效分析方法。该文提供了油藏地球化学方法研究油层水淹程度的依据。

Water-Drive Oil Phsical Model Test and the Analysis Research on the Component Changing of Oil during Water-drive

Long core water-drive oil test is proceeding on the moveable gell displacment flowsheet which is newly developed.The test simulated water injection condition of river area through 321 hours and 18 minutes continuous water-drive test,got 32 samples,their oil components and light hydrocarbons were analysed.It provides that within water injection developing reservior all physical properties changing from oil are resulted from oil constitution changing.Light hydrocarbon is sensitive to water washing,it retrenches the fastest under water washing.Using the ratio between benzene,toluene and their same carbon number alkane can discriminate water flooding degree of reservoir.Bitumen A,group component and light hydrocarbon analysis is the effective analytic way for evaluating reservoir water flooding and washing degree.The paper also gives out the basis of researching reservoir water flooding degree by reservoir geochemical way.