CAJ | 학술논문

针对真武油田主力断块已经进入高含水、高采出程度的现状，利用岩心样品进行了室内测试，结合监测资料，研究了长期注水冲刷以后原油粘度、渗透率、孔隙度、相对渗透率曲线、润湿性等参数的变化。研究结果表明，真武油田主力断块经过长期水驱冲刷以后，原油的粘度、密度缓慢变大，孔隙度变化较小，渗透率变化较大，且渗透率越高，变化越明显；并且长期水驱冲刷对储层的渗流特征产生影响，润湿性表现为亲水性增强；在油水相渗曲线上表现为油水两相等渗点向右偏离。
침대진무유전주력단괴이경진입고함수、고채출정도적현상，이용암심양품진행료실내측시，결합감측자료，연구료장기주수충쇄이후원유점도、삼투솔、공극도、상대삼투솔곡선、윤습성등삼수적변화。연구결과표명，진무유전주력단괴경과장기수구충쇄이후，원유적점도、밀도완만변대，공극도변화교소，삼투솔변화교대，차삼투솔월고，변화월명현；병차장기수구충쇄대저층적삼류특정산생영향，윤습성표현위친수성증강；재유수상삼곡선상표현위유수량상등삼점향우편리。
Aiming at the fact that main blocks in Zhenwu Oilfield have entered the high water -cut stage and high re-covery degree,combining with dynamic monitoring data,using core samples,an experiment study was conducted on parame-ter changes in oil viscosity,permeability,porosity,relative permeability curves and wettability after long -term water flood-ing.The experimental results showed as follows:(1)after long -term water flooding,the oil viscosity and density became more and more large,the porosity change was smaller,and the permeability change was obvious.In other words,the higher the permeability was,the more obvious the permeability change was;(2)the long -term water flooding has a certain effect on the percolation characteristics of reservoir,water wettability was increased,and the equal permeability point on the oil -water relative permeability curve moved to the right side.