无机硼耐高温缓交联压裂液研究  

A High Temperature Retarded Crosslinking Inorganic Boron Fracturing Fluid

作　　者：邬国栋[1] 王玉斌[1] 袁文义[1] 张国红[1] 张栌丹[1] 陈雨[1] 

机构地区：[1]新疆石油管理局采油工艺研究院

出　　处：《钻井液与完井液》2007年第4期50-53,共4页Drilling Fluid & Completion Fluid

摘　　要：对耐温缓交联瓜胶压裂液体系进行了研究。选择羟丙基瓜胶作为水基冻胶压裂液的稠化剂，无机硼作为交联剂，KY-1作为延缓交联助剂，探讨了KY-1的延缓交联的机理；考察了原液中防膨剂、交联液中无机硼、KY-1、NaOH和交联比等因素对交联时间的影响，以及交联比、无机硼浓度、NaOH浓度对压裂液冻胶耐温性能的影响。针对不同地层温度设计了适用于地温（小于140℃）的耐温缓交联压裂液配方，采用HAAKERS150流变仪对压裂液耐温耐剪切性能进行了测试，在170S。剪切速率下剪切60～120min后，保留黏度大干80mPa·S；采用毛细管法测得破胶液黏度小于5mPa·S。A study was done on the high temperature crosslinked guar gum water base gel fracturing fluid.In this study,a hydroxypropyl guar gum was selected as the thickening agent,an inorganic boron as the crosslinking agent,and KY-1 as the retarded crosslinking agent.The mechanism in which the crosslinking was retarded was studied.The effects of some factors(such as swelling inhibitors in the original fluid,the inorganic boron in the crosslinking fluid,KY-1,NaOH and crosslinking ratio etc.) on the crosslinking time,as well as the effects of these factors(the crosslinking ratio,the concentration of inorganic boron and NaOH etc.) on the temperature stability of the gel fracturing fluid,were investigated.A series of temperature(< 140 ℃) stable retarded crosslinking fracturing fluids were developed for different formation temperatures. Using the Haaker S150 rheometer,the rheology of the fracturing fluids was tested at different temperatures and shear rates.The retained viscosity of the fluids after shearing 60-120 min at 170s-1 was greater than 80 mPa·s.The broken fracturing fluid had a viscosity of less than 5 mPa·s(measured with capillary viscometer).

关 键 词：瓜胶压裂液 耐温 缓交联 无机硼 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]