新型活性水压裂液在煤层气井的应用  

Application on Novel Active Water Fracturing Fluid in Coal-bed Methane Wells

作　　者：张高群[1] 肖兵[1] 胡娅娅[1] 潘卫东[1] 谢娟[1] 许威[1] 

机构地区：[1]中原油田井下特种作业处

出　　处：《钻井液与完井液》2013年第1期66-68,94-95,共3页Drilling Fluid & Completion Fluid

基　　金：中石化先导项目<水基压裂返排液回收处理技术>(SG12075)

摘　　要：针对煤层气储层具有低孔、低渗、自然产能低的地质特征,以及常规活性水压裂液施工摩阻高、煤粉不易分散、施工难度高的不利因素。室内研制了由防膨剂、煤粉分散剂、高效减阻剂和助排剂等添加剂组成的新型活性水压裂液。室内评价结果显示,该压裂液对煤岩基质渗透率的伤害较常规瓜尔胶压裂液低,仅为17.2%;对支撑裂缝导流能力的伤害低,渗透率保留率为94.5%。经山西煤层气井10多井次的现场应用,证明该压裂液体系具有良好的施工效果。According to the characteristics of CBM reservoir with low porosity,permeability and natural production,as well as high friction,hard to disperse of coal and difficult to operate with the conventional activated water fracturing fluid,a novel active water fracturing fluid system is developed based on anti-swelling agent,coal dispersants,drag reducer and cleanup agent.The evaluation results show that the damage of coal and rock matrix permeability is lower than conventional guar gum fracturing fluid with only 17.2%,and the permeability retention rate is 94.5%.The applications in more than 10 wells are successful.

关 键 词：活性水 压裂液 煤层气 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]