煤层气储层改造中生物酶破胶技术的研究与应用  

Study and Application of Bio-Enzyme Gel Breaking Technology in Coal Reservoir Stimulation

作　　者：梁利[1] 刘萍[1] 管保山[1] 刘静[2] 吕海燕[2] 周晓群[2] 

机构地区：[1]中国石油勘探开发研究院廊坊分院,河北060507 [2]长庆油田分公司油气工艺技术研究院,陕西710021

出　　处：《中国煤层气》2010年第2期18-23,共6页China Coalbed Methane

摘　　要：针对目前国内煤层气井温度较低,使用交联冻胶压裂液因难于破胶或破胶不彻底等对储层造成较大伤害的问题,介绍了生物酶破胶剂FYPJ-1的低温破胶特性及其在煤层气井中的应用情况。该破胶剂具有在低温(小于50℃)下活性高、破胶快、残渣含量低、粒径小、不影响压裂液流变性及与其它添加剂配伍性良好等优点,是非常适合煤层气井压裂用的破胶剂,现场应用取得了较好的效果。Because of low temperature in coalbed methane （CBM） wells in China,cross-linked gel fracturing fluid can hardly break the gel or do thoroughly,which causes huge damage to coal reservoirs.To deal with the problem,this paper focuses on the gel breaking characteristic of bio-enzyme gel breaker FYPJ-1 under low temperature and its application in CBM wells.The breaker features high activity,rapid breaking,low residue content,small diameter,no effect on the rheology of fracturing fluid and good compatibility with other additives,thus it serves well as gel breaker in CBM wells fracturing.Practices also prove this.

关 键 词：压裂液 生物酶 破胶剂 过硫酸铵 煤层气 

分 类 号：TD842.25[矿业工程—煤矿开采]