摘要
在模拟现场实际条件下,利用岩心填砂管对具有裂缝的并联非均质岩心进行水驱和调剖室内实验,测定高、中、低各渗透层的采收率、含水率、吸水能力等参数,评价分析了调剖效果. 结果表明:对于非均质裂缝油藏,水主要沿高渗透层流动,高渗透层的相对吸水量占总注入量的74.63%以上,而低渗透层相对吸水量低达 4.87%;调剖后,低渗透层相对吸水量比调剖前提高19.73%以上,高渗透层相对吸水量比调剖前降低 31.83%以上,原油综合采收率比水驱提高5.25%以上,综合含水率降低3.83%以上;渗透率级差越大,低渗透层相对吸水量提高,高渗透层相对吸水量降低幅度越大,调剖效果越显著.
An experimental study was conducted about the effect of waterflooding and profile control on the fractured anisotropic reservoirs in modeling the conditions of stratum. Through measuring the recovery efficiency, water-cut and water intake capacity of the high ,intermediate and low permeable strata, the profile control effect was evaluated and analyzed. The results show that for the fractured anisotropic reservoirs ,the injection water mainly flows alone the high permeable stratum and the fracture, the relative water intake capacity is more than 74.63% in the high permeable strata ,and is less than 9.24% in the low permeable strata. After the profile control, the relative water intake capacity increases by more than 19.73% in the low permeable strata, while it decreases by more than 31.83% in the high permeable strata, and the total oil recovery efficiency increases by more than 5.25%, water-cut reduces by more than 3.83%. The water intake capacity of the intermediate and low permeable strata increasing and the water intake capacity of the high permeable strata reducing are marked by the permeability grade increasing.
出处
《大庆石油学院学报》
CAS
北大核心
2005年第1期37-39,共3页
Journal of Daqing Petroleum Institute
关键词
非均质油藏
调剖
吸水能力
室内物理模拟
anisotropic reservoirs
profile control
water intake capacity
laboratory physical simulation
