深圳大学学报（理工版）2026，Vol.43Issue(5)：567-574,8.DOI:10.3724/SP.J.1249.2026.05567
超深层碳酸盐岩酸压低黏缓速酸液
Low-viscosity retarded acid for acid fracturing of ultra-deep carbonate reservoirs
摘要
Abstract
To reduce the acid-rock reaction rate at high temperatures during acid fracturing of ultra-deep carbonate reservoirs and thereby improve acid penetration capability,a low-viscosity retarded acid system capable of withstanding temperatures up to 200℃was developed.The system was designed to reduce the H+release rate,H+diffusion rate,and surface reaction rate.Its rheological properties,retardation performance,and acid-rock reaction kinetic parameters were evaluated through laboratory experiments.The results show that the optimized acid system can withstand temperatures up to 200℃,with optimal mass fractions of 10.0%HCl,9.0%CH3COOH,and 1.5%low-viscosity retarder.Both fresh and spent acids exhibit low apparent viscosities,indicating good injectivity and flowback performance.At 200℃,the retardation rate reaches 90.080%.Compared with conventional hydrochloric acid,the proposed system exhibits a lower H+mass-transfer coefficient and a higher activation energy for the acid-rock reaction,thereby effectively reducing the acid-rock reaction rate.The proposed low-viscosity retarded acid system combines low viscosity,low formation damage,high-temperature resistance,and excellent retardation performance,providing technical support for acid-fracturing stimulation of ultra-deep high-temperature carbonate reservoirs.关键词
油气田开发工程/超深层碳酸盐岩/酸压/低黏缓速酸/酸岩反应动力学/传质系数/耐高温Key words
oil and gas field development engineering/ultra-deep carbonate/acid fracturing/low-viscosity retarded acid/acid-rock reaction kinetics/mass-transfer coefficient/high-temperature resistance分类
能源科技引用本文复制引用
鄢宇杰,侯帆,李策,杜娟,刘平礼,陈祥..超深层碳酸盐岩酸压低黏缓速酸液[J].深圳大学学报（理工版）,2026,43(5):567-574,8.基金项目
Science and Technology Research Project of SINOPEC Northwest Oilfield Company(34400007-22-ZC0607-0057) （34400007-22-ZC0607-0057）
National Science and Technology Major Project of China(2025ZD1402305). 中国石油化工股份有限公司西北油田分公司科技攻关资助项目(34400007-22-ZC0607-0057) （2025ZD1402305）
国家科技重大专项基金资助项目(2025ZD1402305) （2025ZD1402305）
