用动态物理模拟实验研究夹层长度对底水锥进的影响

采用烧结的平面物理模型 ,实验模拟底水绕过上窜夹层的动态过程 .实验考察了不同夹层位置下夹层长度对水锥的影响规律 ,进而得到夹层相对长度对水突破时间及无水采出程度的影响曲线 .研究表明 ,当夹层位于原始油水界面时 ,较短的夹层对水锥无明显影响 ,只有夹层长度达到一定值后它对水锥的抑制作用才表现出来 ,且夹层越长抑制效果越好 ;当夹层位于原始油水界面以上时 ,夹层长度对水锥的影响就复杂一些 ,夹层长度存在一最佳区间

Study on the effect of interbed length on bottom-water coning by dynamic physical modeling experiments

The dynamic process of bottom-water bypassing interbed and fleeing upward is simulated by using sintered planner models. The effects of the interbeds with different lengths and different locations on bottom-water coning are studied, and then the laws of the relative length of the interbed influencing water breakthrough time and no-water recovery percent of reserves are obtained. The results indicate that when the interbed is at the same level as original oil-water interface, short interbed has no effect on them, and after the length of the interbed reaches to certain value, the longer the interbed, the better the inhibiting effects of the interbed on botton-water coning, and that when the interbed is above the original oil-water interbed interface, there is a complex rule of the interbed length influencing botton-water coning, there is an optimal interval of the interbed length.