Anti-acid slag agent for acidification and preparation method thereof

• Main Authors: XU TAO, GUO FANG, XU SHUJUN, LIU BO, RAO TIANLI, XU ZHUANGJU
• Format: Patent
• Language: Chinese; English
• Published: 23.02.2021
• Subjects: ADHESIVES; CHEMISTRY; DYES; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MINING; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PAINTS; POLISHES

The invention relates to an anti-acid slag agent for acidification and a preparation method thereof, and belongs to the technical field of oil exploitation. The anti-acid slag agent comprises the following components in parts by weight: 20-32 parts of polyethylene glycol, 5-13 parts of a complexing agent, 0.5-2 parts of a reducing agent, 3-6 parts of 30% hydrochloric acid and 50-60 parts of water.The anti-acid slag agent is applied to crude oil with high colloid content, and the content of Fe <3+> in acid liquor is successfully reduced through a reduction and complexing comprehensive treatment method, so that the forming speed of acid residues is reduced. The surfactant polyethylene glycol is also added into the components of the anti-acid residue agent, and colloid and asphaltene are noteasy to coalesce through adsorption and dispersion effects, so that the effect of preventing formation of acid residues is achieved. 本发明涉及一种酸化用抗酸渣剂及其制备方法，属于石油开采的技术领域。所述抗酸渣剂包括重量份的以下组分：聚乙二醇20～32份，络合剂5～13份，还原剂0.5～2份，30％盐酸3～6份，水5