| abstract |
The invention discloses a diverting acid, a preparation method and an application thereof, and belongs to the field of oil and gas exploitation. The turning acid includes the following components by mass percentage: 4%-8% of betaine-type surfactant, 0.05%-0.1% of macromolecular tackifier, 1%-3% of corrosion inhibitor, 1%-2% % of corrosion inhibitor synergist, 1% to 3% of iron ion stabilizer, 15-25% of hydrochloric acid and the balance of water; the molecular structure of the polymer tackifier is: Wherein, both y and n are integers greater than zero. Through the synergistic compounding of the above components, the diverting acid provided in the embodiment of the present invention can be applied to deep oil wells, the flow resistance of the diverting acid in the oil pipe is reduced, and the diverting acid can be injected into the deep well with a large displacement, realizing Acidizing Reservoir. |