多功能增效压裂液在川西中浅层气藏的研究与应用  

Research and Application of Multifunctional Synergistic Fracturing Fluid in Middle and Shallow Gas Reservoirs of Chuanxi Oilfield

作　　者：刘斌[1] 勾宗武[1] 尹琅[1] 

机构地区：[1]中石化西南油气分公司工程技术研究院

出　　处：《钻井液与完井液》2013年第4期63-65,96,共3页Drilling Fluid & Completion Fluid

基　　金：国家重大专项<大型油气田及煤层气开发>(2008ZX050)二级专题<四川盆地低渗气藏储层改造工艺技术研究>(2008ZX05002-004-04)部分研究成果

摘　　要：川西中浅层气藏为典型的低渗、致密气藏,压裂改造是勘探和开发的主要手段。然而,随着川西坳陷低渗致密砂岩气藏开发的深入,储层品质逐渐降低,对原有的压裂液体系及改造工艺提出了更高的要求。研制的多功能增效压裂液具有表面张力低(<25 mN/m)、破胶迅速、返排速度快等特点。选取同一井组的邻井进行产量对比,压后效果表明,应用井压后平均产量为3.4×104m3/d,为邻井的1.8倍。多功能增效压裂液实现了低渗储层压裂的"快进快出"要求,减少了压裂液对储层的伤害,能有效地改造储层,增产效果显著。The middle and shallow gas reservoirs of Chuanxi oilfield is of typical low-permeability and tight gas reservoir,and fracturing operation is the main exploration method.However,with the exploration developing,the quality of reservoir is getting worse,the normal fracturing fluid system cannot work effectively anymore.A kind of multifunctional synergistic fracturing fluid system is developed that has performances of low surface tension(<25 mN/m),fast gel-breaking and high viscosity of flow-back.The comparison result of productivities with two adjacent wells show that the productivity of fractured well is 3.4×104 m3/d,1.8 times of the other well.

关 键 词：增效压裂液 低伤害 川西低渗气藏 压裂改造 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]