超高温水基压裂液增稠剂的改性及性能研究  

Study of Performance and Modification of Thickening Agent for Ultra High Temperature Water Based on Fracturing Fluid

作　　者：谈笑 费学宁 张宝莲 刘鑫 TAN Xiao;FEI Xuening;ZHANG Baolian;LIU Xin(School of Materials Science and Engineering;School of Science,TCU,Tianjin 300384,China)

机构地区：[1]天津城建大学材料科学与工程学院,天津300384 [2]天津城建大学理学院,天津300384

出　　处：《天津城建大学学报》2018年第5期368-372,共5页Journal of Tianjin Chengjian University

基　　金：天津市滨海新区科技计划项目(2011-BH14003);天津市科技计划项目(13ZCZDGX03100)

摘　　要：超深井及非常规油气藏开采常常需要压裂液耐温180℃以上,笔者以羧甲基胍胶为母体,通过引入刚性基团2-吡咯烷酮,阳离子基团(2-氯乙基)三甲基氯化铵,将改性羧甲基胍胶与非离子型聚丙烯酰胺复配形成梯形结构,提高压裂液耐温抗剪切性能.采用傅里叶红外光谱仪(FT-IR)、热重分析仪(TG)对其结构和热稳定性进行表征,并对其交联性能、高温剪切性能进行测试.其中2-吡咯烷酮+(2-氯乙基)三甲基氯化铵改性羧甲基胍胶与聚丙烯酰胺复配在200℃、170 s-1的剪切速率下剪切60 min后的表观黏度为110 m Pa·s,比未改性的羧甲基胍胶耐温抗剪切能力有明显改善.Ultra-deep wells and unconventional oil and gas reservoirs often require fracturing fluid temperatures above 180 ℃.In this paper, carboxymethyl guanidine as the mother, by introducing a rigid group 2 -pyrrolidone, Cationic groups（2 -chloroethyl） trimethylammonium chloride, and the modified carboxymethyl guanidine and non-ionic polyacrylamidecompound, we form trapezoidal structure to improve the temperature and shear resistance of fracturing fluid. And By usingFourier infrared spectrometer （FT - IR）, Thermogravimetric analyzer （TG）, its structure and thermal stability ofthe characterization and its cross-linking performance, High temperature shear performance has been tested. Among them,2-pyrrolidone＋（2-chloroethyl） trimethylammonium chloride modified carboxymethyl guanidine and polyacrylamide havebeen mixed at 200℃, 170s -1shear rate 60min shear after the apparent viscosity of 110 mPaos, then the unmodified rubbertemperature resistance to shear capacity has been improved significantly.

关 键 词：超高温压裂液 羧甲基胍胶 复合增稠剂 刚性基团 改性 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]