Water Flooding Low Injector Governance Countermeasure Research

After water flooding development of the infilled adjustment of one,two,three,at present has entered a stage of development for determining,in oil reservoir into three times in succession and development of grade 1 and 2,after water flooding exploitation object are mainly three kinds of reservoir,oil,many low permeability,the contradiction between the layers.In particular,by the impact of polymer containing wastewater reinjection,water flooding water absorption capacity difference of the proportion of wells increased year by year.Although the increase water quality management measures and injection wells transformation efforts,but because of poor properties,the existing water reinjection sewage and oil reservoir adapt to the impact of poor factors,the contradiction between water absorption of water injection wells is still prominent difference.For this reason,this paper studies the influence of water quality on the seepage capacity of the reservoir by using the actual water samples in the laboratory.The results show that the injected water quality is worse,the greater the decline of permeability,the increase of pollution degree;on the basis of seepage ability changes,in accordance with the apparent injectivity index will decrease in oil pollution degree was divided into mild,moderate and severe three levels of light pollution;implementation of well washing,moderate pollution for acidizing,fracturing to severe pollution transformation.