摘要
用动滤失仪评价了粘土调剖剂对中低渗透层的污染情况。研究表明，注入压力越高。中低渗透层的污染越严重；地层的非均质程度越高，中低渗透层的污染越小．解除污染的方法有返排法和土酸酸化法。试验证明，返排法不能从根本上解除污染，常规土酸酸化方法的效果较好。
This paper deals with contamination situation of clay profile control agents to the for-mation with middle and low permeability with dynamic filtration device. Research result shows thehigher injection pressure,the more serious contamination of the formation with middle and low perme-ability. The higher heterogenety of the formation the lower contamination with middle and low perme-ability. The methods of removing contamination are back washing and mud acid treatment.The exper-iment has proved that the method of back washing can not perfectly remove contamination. Themethod of ordinary mud acid treatment is efficient.
出处
《石油大学学报（自然科学版）》
CSCD
1994年第A00期126-129,共4页
Journal of the University of Petroleum,China(Edition of Natural Science)
