异常高温胍胶压裂液体系研制与应用  

Research and application of gum/borate gelling fracturing fluid system for abnormal high temperature use

作　　者：郭建春[1] 辛军[1] 王世彬[1] 赵金洲[1] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500

出　　处：《石油钻采工艺》2010年第3期64-67,共4页Oil Drilling & Production Technology

基　　金：国家科技重大专项(编号:2008ZX05006-005)资助

摘　　要：目前国内常规的压裂液体系仅适用温度150℃以下的地层。室内对影响超高温压裂液性能的主要添加剂——稠化剂和交联剂进行了改性,通过严格控制反应条件,得到低残渣、高黏度的超高温胍胶稠化剂GHPG和超高温延迟交联剂BA1-21,研制出耐温190℃以上的超高温压裂液体系。对超高温改性胍胶的性能进行了评价,对超高温压裂液体系交联剂延迟交联性能、耐温耐剪切性能进行了评价。在ZG63井实施压裂改造8d后,压裂液返排率74.9%,平均产气6000m3/d,初步达到了改造储层并认识储层的效果。该技术对国内深层超高温储层压裂具有一定指导意义。Proper fracturing fluid system is critical to successful deep well（more than 5000m deep）fracturing with abnormal high temperature（higher than 180℃）.However,conventional fracturing fluid systems now used in China only adapt to the strata with temperature lower than 150℃.Lab experiment is conducted to modify two major additives that affect the property of ultra-high temperature fracturing fluid---thickener and crosslinker.By strictly controlling the reaction conditions,GHPG gum/borate gelling thickner with low residue and high viscosity for ultra-high temperature use and BA1-21 delayed crosslinker for ultra-high temperature use are obtained,and a fracturing fluid system resistant to the temperature higher than 190℃is developed successfully.The performance of modified gum/borate gell for ultra-high temperature use is evaluated,the delayed crosslinking performance and heat/shearing resistance of crosslinker of the fracturing fluid system for ultra-high temperature use is also evaluated.Eight days after fracturing and modification in ZG63 well,flow back rate of fracturing fluid attains to 74.9%,with the average being 6000 m3.The reservoir is modified and recognized.This new breakthrough is valuable for deep reservoir fracturing with ultra-high temperature in China.

关 键 词：超高温压裂液 稠化剂改性 交联剂改性 190℃ 现场实施 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]