以低渗透油藏非线性渗流规律为基础,利用室内物理模拟方法研究压敏效应的影响。选择某一低渗透油藏为油藏模型,数学模型采用BOAST-NFR For Excel三维三相黑油模型,选择隐式求压力显示求解饱和度的IMPES算法,对超前注水增产机理及建立有...以低渗透油藏非线性渗流规律为基础,利用室内物理模拟方法研究压敏效应的影响。选择某一低渗透油藏为油藏模型,数学模型采用BOAST-NFR For Excel三维三相黑油模型,选择隐式求压力显示求解饱和度的IMPES算法,对超前注水增产机理及建立有效驱替压力系统、注水时机、人工裂缝等影响因素进行室内研究。展开更多
In order to improve the effect of water control and oil stabilization during high water cut period, a mathematical model of five point method well group was established with the high water cut well group of an Oilfiel...In order to improve the effect of water control and oil stabilization during high water cut period, a mathematical model of five point method well group was established with the high water cut well group of an Oilfield as the target area, the variation law of water cut and recovery factor of different injection parameters was analyzed, and the optimization research of injection parameters of polymer enhanced foam flooding was carried out. The results show that the higher the injection rate, the lower the water content curve, and the higher the oil recovery rate. As the foam defoamed when encountering oil, when the injection time was earlier than 80% of water cut, the later the injection time was, the better the oil displacement effect would be. When the injection time was later than 80% of water cut, the later the injection time was, the worse the oil displacement effect would be. The larger the injection volume, the lower the water content curve and the higher the recovery rate. After the injection volume exceeded 0.2 PV, the amplitude of changes in water content and recovery rate slowed down. The optimal injection parameters of profile control agent for high water content well group in Oilfield A were: injection rate of 15 m<sup>3</sup>/d, injection timing of 80% water content, and injection volume of 0.2 PV.展开更多
文摘以低渗透油藏非线性渗流规律为基础,利用室内物理模拟方法研究压敏效应的影响。选择某一低渗透油藏为油藏模型,数学模型采用BOAST-NFR For Excel三维三相黑油模型,选择隐式求压力显示求解饱和度的IMPES算法,对超前注水增产机理及建立有效驱替压力系统、注水时机、人工裂缝等影响因素进行室内研究。
文摘In order to improve the effect of water control and oil stabilization during high water cut period, a mathematical model of five point method well group was established with the high water cut well group of an Oilfield as the target area, the variation law of water cut and recovery factor of different injection parameters was analyzed, and the optimization research of injection parameters of polymer enhanced foam flooding was carried out. The results show that the higher the injection rate, the lower the water content curve, and the higher the oil recovery rate. As the foam defoamed when encountering oil, when the injection time was earlier than 80% of water cut, the later the injection time was, the better the oil displacement effect would be. When the injection time was later than 80% of water cut, the later the injection time was, the worse the oil displacement effect would be. The larger the injection volume, the lower the water content curve and the higher the recovery rate. After the injection volume exceeded 0.2 PV, the amplitude of changes in water content and recovery rate slowed down. The optimal injection parameters of profile control agent for high water content well group in Oilfield A were: injection rate of 15 m<sup>3</sup>/d, injection timing of 80% water content, and injection volume of 0.2 PV.
