含醇交联压裂液的交联和耐温性能  

Cross-linking and temperature resistance property of alcohol-containing fracturing fluid

作　　者：范海明[1] 杨航 李玲玉 魏志毅 张随望[2] 张金泽 刘崧达 杨红斌[1] FAN Haiming;YANG Hang;LI Lingyu;WEI Zhiyi;ZHANG Suiwang;ZHANG Jinze;LIU Songda;YANG Hongbin(Shandong Key Laboratory of Oilfield Chemistry,College of Petroleum Engineering in China University of Petroleum(East China),Qingdao 266580,China;Oil and Gas Technology Research Institute,Changqing Oilfield Company,Xi an 710018,China)

机构地区：[1]山东省油田化学重点实验室,中国石油大学(华东)石油工程学院,山东青岛266580 [2]长庆油田公司油气工艺研究院,陕西西安710018

出　　处：《中国石油大学学报（自然科学版）》2021年第6期120-126,共7页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金项目(51574267);山东省自然科学基金项目(ZR2021ME007);国家重点研发计划项目(2019YFA0708703)。

摘　　要：研究瓜胶(GG)、羟丙基瓜胶(HPG)和羧甲基羟丙基瓜胶(CMHPG)在不同乙醇含量下的溶解性能,并以四硼酸钠为交联剂制备含醇交联压裂液体系,分析交联性能和耐温性能随乙醇体积分数的变化。结果表明:瓜胶、羟丙基瓜胶和羧甲基羟丙基瓜胶分别在乙醇体积分数为10%、50%和60%时可以充分溶解;加入交联剂四硼酸钠后,羟丙基瓜胶和羧甲基羟丙基瓜胶可在乙醇体积分数分别不超过30%和50%形成含醇交联压裂液;由于乙醇具有抑制瓜胶类稠化剂分子链降解和增强交联程度的双重作用,含醇压裂液具有比水基压裂液更强的耐温性能。The solubility of guar gum(GG),hydroxypropyl guar gum(HPG)and carboxymethyl hydroxypropyl guar gum(CMHPG)in alcohol/water mixed solvents with different ethanol volume fractions were investigated.Alcohol-containing fracturing fluid was prepared with sodium tetraborate as crosslinking agent.The change of cross-linking performance and temperature resistance property with ethanol content were analyzed.It is found that GG,HPG and CMHPG can be fully dissolved when the ethanol volume fraction is 10%,50%and 60%,respectively.After adding crosslinking agent sodium tetraborate,alcohol-containing crosslinked fracturing fluid can be formed when the ethanol content does not exceed 30%and 50%for HPG and CMHPM,respectively.Because ethanol has the dual functions of inhibiting molecular chain degradation and enhancing the cross-linking degree,alcohol-containing crosslinked fracturing fluid has stronger temperature resistance than water-based fracturing fluid.

关 键 词：含醇压裂液 改性瓜胶 交联 耐温性 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]