▎ 摘　　要

NOVELTY - Pre-flush chemical comprises (a) 0.01-0.1 wt.% carbon compound, (b) 0.005-0.05 wt.% surfactant, and (c) solvent, where the solvent is used in an amount to achieve 100% of total weight of the pre-flush chemical. USE - The chemical is used in scale inhibitor squeeze treatment (claimed). ADVANTAGE - The chemical increases retention time of at least one scale inhibitor within a hydrocarbon producing system such that scale deposition can be prevented and delayed and hydrocarbon production can be maximized. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of preparing pre-flush chemical for scale inhibitor squeeze treatment, comprising (i) mixing carbon compound and surfactant in a medium while stirring to produce a mixture for a duration of 45-75 minutes at a temperature of 30-40° C, where the medium is deionized water, (ii) ultrasonicating the mixture obtained from step (i) to produce surfactant grafted carbon compound for a duration of 1-3 hours at a temperature of 22-27° C, (iii) centrifuging the surfactant grafted carbon compound obtained from step (ii) at least once, preferably twice to obtain supernatant for a duration of 10-20 minutes at a temperature of 22-27° C, where the second centrifugation is carried out for a duration of 25-45 minutes at a temperature of 22-27° C, (iv) washing the supernatant obtained from step (iii) using a solution to obtain purified surfactant grafted carbon compound, where the solution comprises water and ethanol, (v) filtering the purified surfactant grafted carbon compound obtained from step (iv) using a mesh, (vi) drying the purified surfactant grafted carbon compound obtained from step (v) for a duration of 20-30 hours at a temperature of 90-120° C to obtain surfactant grafted carbon compound powder, (vii) mixing the surfactant grafted carbon compound powder obtained from step (vi) into a solvent while stirring to produce a dispersion for a duration of 5-10 minutes at a temperature of 22-27° C, and (viii) ultrasonicating the dispersion obtained from step (vii) to produce the pre-flush chemical of the present invention for a duration of 30-90 minutes at a temperature of 60-80° C.