摘要
裂缝性储层注水井酸化增注作业中,由于裂缝发育、非均质性强,难以均匀布酸,影响酸化效果,为此对SA-2水溶性分流剂溶解性能及其对裂缝性双岩心的暂堵分流效果进行了室内实验评价,并采用多元线性回归方法分析了渗透率级差、驱替压力、分流剂浓度、平均缝宽对分流液用量的影响。结果表明,SA-2能对宽度小于0.7mm的裂缝实现暂堵分流,分流指数在95%以上,驱替压力、平均缝宽及分流剂浓度是影响分流液用量的主要因素。
In the time of acidizing the injection well in fissured reservoir,for the existing of fracture and strong anisotropy,it＇s hard to place it rationally.Laboratory evaluates the solubility and temporary plugged diversion for fractured double cores of water soluble diverter,named as SA-2.Employ the multiple regressions to analyze the effluence of permeability difference,average fracture width,displacement pressure and diverter concentration on the volume of diverter solution to achieve divert.Laboratory tests indicates that SA-2 can realize good diversion for fracture width less than 0.7mm as well as the diversion indexes are more than 95%,and the displacement pressure,average facture width and diverter concentration are major factors on the volume of diverter solution.
出处
《重庆科技学院学报（自然科学版）》
CAS
2011年第6期1-4,共4页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
国家科技重大专项(2008ZX05024-04)
中海油发展能源公司项目(CJSP09Z0079)
关键词
裂缝性储层
分流剂SA-2
注水井酸化
分流指数
多元回归
fissured reservoir
diverter SA-2
injection well acidizing
diversion index
multiple regression
