| abstract |
The application discloses an oil-reservoir re-injection water compounding liquid adjusting and flooding agent, a preparation method and an application thereof, belonging to the technical field of oil production engineering. The adjusting and driving agent comprises the following components in mass percentage: 0.1%-0.2% of modified polyacrylamide, 0.15%-0.3% of cross-linking agent, 0.05%-0.1% of pH regulator, 0.005%-0.01% The metal ion remover of , and the balance is water; the molecular structure of the modified polyacrylamide is: Wherein a is 2-5, b is 2-5, and c is 2-5; the cross-linking agent is prepared by the following method: adding water and p-hydroxybenzyl alcohol to the reaction kettle, stirring, heating, warming up to 35～45 ℃ dropwise Add hydrochloric acid to adjust the pH value to 2 to 3, stir and heat up to 75 ° C to 90 ° C, add formaldehyde dropwise, stir and react to stand for stratification, and take the supernatant liquid as the crosslinking agent; wherein, the p-hydroxybenzyl alcohol and The molar ratio of the formaldehyde is 1:0.6-0.8. |