The characteristic of injection well plugging and research of broken down technology in Shanshan oilfield

Shanshan oilfield belongs to low porosity and low permeability oil fields.The water injection pressure rises year by year in injection wells.Owe injection water has become a prominent contradiction,which seriously affects the development of oilfield water injection.Laboratory test and field experience think that reservoir sensitivity,injection water quality,the influence of formation scaling and the measures augmented injection are the major factors of well damage in the oil field.Through the development of core dissolution test,we believe that the more hydrogen acid system has the good adaptability in the region. Through these,this paper identifies with the acid strength of key parameters and draws the corresponding application chart.