长江大学学报（自然科学版）2026，Vol.23Issue(1)：68-75,8.
煤岩气压裂高效复合破胶剂的制备与研究
Preparation and research of high-efficiency composite glue breaker for coal and rock gas fracturing
摘要
Abstract
Aiming at the current horizontal fracturing of coal rock gas wells under low-temperature conditions,the use of ammonium persulfate gel-breaking agent has poor gel-breaking effect,and it is difficult to return to the drainage,which leads to serious damage to the reservoir and other problems.In this paper,by studying the degradation mechanism of bio-enzyme breaker on polymer fracturing fluid,we form AT-1 bio-enzyme+oxidized Q-1 composite breaker system by compounding oxidized breaker.The apparent viscosity change,molecular weight and residue content of the breaking fluid were compared between the new breaking agent and the traditional persulfate breaking agent on the breaking performance of emulsion-type thickening agent fracturing fluid to investigate its breaking performance.The experimental results show that the composite breaker system can break the rubber within 4 h,and the molecular weight of the rubber breaking fluid added into the composite breaker system is as low as 1 170 g/mol by GPC method,while that of the ammonium persulfate breaker is as high as 25 590 g/mol,which indicates that new type of breakers can make the fracking fluid degraded more thoroughly.At the same time,the residue content of the fracturing fluid added to the composite breaker system can be as low as 120 mg/L measured by centrifugal method,which is less harmful to the reservoir.关键词
复合破胶剂/煤岩气/破胶液分子量/残渣含量/水平井压裂Key words
composite breakers/coal rock gas/molecular weight of breakers/residue content/horizontal well fracturing分类
能源科技引用本文复制引用
石华强,侯艳鑫,胡喜锋,肖元相,李小玲,赵博超,马新星,刘晓瑞,丁里..煤岩气压裂高效复合破胶剂的制备与研究[J].长江大学学报（自然科学版）,2026,23(1):68-75,8.基金项目
国家自然科学基金项目"调频调幅水力振荡强化酸液解堵特性与调控机制"(52174017). （52174017）
