Selection and Evaluation of Corrosion Inhibitors Used for Oil Wells in Linpan Oilfield

Linpan oilfield has series of oil-bearing strata,complex relationship between oil and water,high mineralization degree and weak acidic formation water,high formation temperature.All these factors caused severel corrosion of oilfield facilities.Aimed at the actual situation of Linpan oilfield,several kinds of corrosion inhibitors (SLP-4,BS-X,IMC-30-Q′) have been screened and evaluated by static coupon corrosion test and electrochemical method.Experimental results showed that BS-X inhibitor was suitable to Linpan oilfield.When the concentration was 20 mg/L,the BS-X inhibitor efficiency reached 91.9%.