稠油底水裂缝油藏单井封堵参数研究

Study on plugging parameters of single well in fissured heavy oil reservoir with bottom water

为了抑制底水锥进 ,采用人工方法 ,在油井裸眼的下部挤入聚丙烯酰胺等化学剂 ,形成弹性隔板 ,以扩大水驱油体积 ,控制含水上升 ,改善油藏开发效果。利用油藏数值模拟技术 ,综合研究了单井隔板的厚度、半径、位置对油水运动规律的影响。结果表明隔板半径越大 ,油井有效生产时间越长 ,开发效果越好 ;隔板位置越高 ,油井开发效果越好 ;隔板厚度对油井开发效果影响不大。

To inhibit bottom water coning, the chemical agents such as polyacrylamide etc. are squeezed in lower part of open hole in oil well by manual work, which can form elastic block board to improve sweep efficiency, prevent water cut from going up and improve reservoir development effect. The effect of the blockboard thickness, radius and location on the law of oilwater movement is studied by reservoir numerical simulation. It is demonstrated that the bigger the block board radius is, the longer the effective period and the better development effects are; and the higher the block board location is, the better the development effect is; and the block board thickness hasn′t obvious effect on the development effect.