摘要
低渗透油田在注水过程中由于水质不达标而引起的储层堵塞,导致注水压力升高、注不进水的现象,严重影响注水开发的效果。针对这一问题,通过室内岩心流动实验和现场试验综合的方法,研究出了一种清洁且经济效益高的解除注水井井底滤饼堵塞的新方法。试验结果表明:负压返吐可以有效地反排出射孔孔眼、裂缝及储层岩石表面的滤饼堵塞。
Since water quality is substandard,the low permeability reservoir is easy sealed in the water injection process,which lead to the injection pressure increased,and seriously affect waterflooding effect. To solve this problem,a clean and high economic efficiency method to removal bottom filter cake was studied by combining core flow tests and field test. The test results showed that negative discharge could effectively eliminate filter cake which exist in perforations,fracture and reservoir rock surface.
出处
《钻采工艺》
CAS
北大核心
2015年第3期56-58,12,共3页
Drilling & Production Technology
基金
陕西省科技统筹创新工程计划项目"提高延长油田主力油层开发效果系统工程关键技术研究"(编号2011KTZB01-04)
关键词
注水井
滤饼
解堵
负压返吐
injection wells,filter cake,broken down,negative spit back
