Evaluations of Injected Water Quality Both in Bamianhe Oilfield and Pingbei Area of Ansai Oilfield

The demands for injected water quality are related to geologic conditions of oil reservoirs.By testing and analyzing the injected water quality both in Bamianhe Oilfield and Pingbei Area of Ansai Oilfield,the authors point out that the injected water quality is not compatible with the geologic conditions.The circulated water is polluted again in water storage tanks and pipe lines to different extent,which is presented by the obvious increase of bacteria content,iron content and suspended solid diameter.In addition,the technology flow of some water injection stops needs improving.