压裂采油用胍胶水溶液流变性及影响因素研究  

Study on the Rheological Properties and Infl uencing Factors of Guar Gum Aqueous Solution Used in Fracturing and Oil Production

作　　者：任波[1] 刘磊 丁保东[1] Ren Bo;Liu Lei;Ding Baodong(SINOPEC Northwest Company of China Petroleum and Chemical Corporation,Xinjiang,830011)

机构地区：[1]中国石油化工股份有限公司西北油田分公司,新疆830011

出　　处：《当代化工研究》2023年第21期52-54,共3页Modern Chemical Research

基　　金：中国石化重点科技攻关项目“超深层稠油降粘举升技术与集成应用”(项目编号:P219014-1);中国石化集团缝洞型油藏提高采收率重点实验室基金资助项目。

摘　　要：胍胶是水力压裂液最常用的稠化剂,但其流变性缺乏深入研究。论文系统研究了胍胶体系的增粘性及温度、无机盐对其流变性的影响。结果表明:水溶液中胍胶在2624.27mg·L^(-1)浓度时分子可形成聚集结构,并且具有显著的触变性。胍胶水溶液随浓度增加表现出良好的增粘性,但耐温性较差。胍胶分子聚集结构耐一价阳离子(Na^(+))性较好,耐多价阳离子(Ca^(2+)、Al^(3+))性较差。在研究的浓度、温度及无机盐条件下,胍胶溶液均表现出以粘性为主的性质。Guar gum is the most commonly used thickening agent for hydraulic fracturing fluids,but there is a lack of in-depth research on its rheological properties.This article systematically studied the viscosity enhancement of guar gum system and the effects of temperature and inorganic salts on its rheological properties.Research has shown that guar gum molecules in aqueous solutions can form aggregation structures at a concentration of 2624.27 mg·L^(-1)and exhibit significant thixotropy.Guar gum aqueous solution exhibits good viscosity increase with increasing concentration,but its temperature resistance is poor.The aggregation structure of guanidine gum molecules has good resistance to monovalent cations(Na^(+)),but poor resistance to multivalent cations(Ca^(2+),Al^(3+)).Under the studied concentration,temperature,and inorganic salt conditions,guar gum exhibits predominantly viscous properties.

关 键 词：压裂液 胍胶 流变性 粘弹性 温度 无机盐 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]