季胺盐型防膨剂的制备及其性能评价  

Preparation and performance evaluation of quaternary ammonium salt anti-swelling agent

作　　者：王晨[1] 韩非 常峰[2] 龙学莉 梁利东[4] 代方方 WANG Chen;HAN Fei;CHANG Feng;LONG Xue-li;LIANG Li-dong;DAI Fang-fang(Key Laboratory of Auxiliary Chemistry&Technology for Chemical Industry,Ministry of Education,Shaanxi University of Science&Technology,Xi'an 710021,China;Petroleum Engineering Technology Research Institute of Sinopec Shengii Oilfield Company,Dongying 257001,China;Changqing Chemical Group,Xi'an 710021,China;Ningxia Corps,China Building Materials Industry Geological Exploration Center,Yinchuan 750021,China)

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021 [2]中国石化胜利油田分公司石油工程技术研究院,山东东营257001 [3]长庆化工集团,陕西西安710021 [4]中国建筑材料工业地质勘查中心宁夏总队,宁夏银川750021

出　　处：《陕西科技大学学报》2021年第5期75-80,89,共7页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅自然科学基金项目(2019JQ-789)。

摘　　要：为了解决低渗透储层粘土膨胀所带来的负面影响,以三乙烯四胺(TETA)与3-氯-2-羟丙基三甲基氯化铵(CTA)合成了一种季胺盐低聚合物,将其作为防膨剂应用.利用红外光谱和核磁共振氢谱分析确认了产物的结构,结果表明当TETA与CTA分别按照1∶1、1∶2和1∶4进行反应后得到了三种不同的低聚物防膨剂.通过采用离心法对不同产物进行不同条件下的防膨性能测试.测试结果表明,当TETA与CTA的摩尔比为1∶4时,季胺盐低聚合物(TETA-FP_(4))具有优良的防膨性能.当TETA-FP_(4)用量为1%时,防膨率为92.08%;经过3次水洗后,其耐水洗率91.02%.当温度超过80℃后其防膨率仍可超过86%.表明该季胺盐低聚合物防膨剂具有优良的耐温耐水洗能力.不同pH和矿化度下的防膨性能表明,TETA-FP_(4)具有良好的耐矿化度和耐酸碱能力.可用作耐温耐酸耐高盐压裂液的防膨添加剂.In order to solve the negative effect of clay swelling in low permeability reservoir,a quaternary ammonium salt low polymer was synthesized by triethylenetetramine(TETA)and 3-chloro-2-hydroxypropyl trimethylammonium chloride(CTA),which was used as anti-swelling agent.The structure of the product was analyzed by IR and 1H NMR.The results showed that three kinds of oligomer anti swelling agents were obtained when the ratio of TETA to CTA was 1∶1,1∶2 and 1∶4 respectively.The anti-swelling properties of different products under different conditions were tested by centrifugation method.The results showed that when the molar ratio of TETA to CTA was 1∶4,the anti-swelling properties of different products were improved,TETA-FP_(4) has excellent anti-swelling property.When the dosage of TETA-FP_(4) is 1%,the anti-swelling rate is 92.08%;after three times of washing,the anti-swelling rate is 91.02%.When the temperature exceeds 80℃,the anti-swelling rate can still exceed 86%,TETA-FP_(4) has good resistance to salinity and acid and alkali.It can be used as an anti-swelling additive for high temperature,acid and salt resistant fracturing fluid.

关 键 词：季胺盐 聚合物 防膨剂 防膨性能 

分 类 号：TE39[石油与天然气工程—油气田开发工程]