耐盐抗高温水基钻井液增黏剂的合成与性能评价  

Synthesis and performance evaluation of salt and high temperature resistant water-based drilling fluid viscosity enhancers

作　　者：王晓博 程云[2] 马诚[1] 罗根祥[1] 吴限[1] 蔡佳廷 WANG Xiaobo;CHENG Yun;MA Cheng;LUO Genxiang;WU Xian;CAI Jiating(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,China;School of Environmental and Safety Engineering,Liaoning Petrochemical University,Fushun 113001,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [2]辽宁石油化工大学环境与安全工程学院,辽宁抚顺113001

出　　处：《应用化工》2024年第9期2118-2122,共5页Applied Chemical Industry

基　　金：辽宁省教育厅科学研究经费项目(L2020005);中国石化科技部项目(421034);辽宁省兴辽英才计划项目(XLYC1902053)。

摘　　要：以N-乙烯基甲酰胺(NVF)、二乙烯苯(DVB)与丙烯酰胺(AM)等单体为主要原料,经过自由基聚合制备抗高温共聚物增黏剂DT。通过FTIR与1H NMR测定了聚合物体系的结构以及通过热失重分析了聚合物体系的热性能。评价了聚合物在不同温度高温老化前后的黏度变化。结果表明,增黏剂DT在240℃、15%NaCl的基浆中黏度保持率87.1%;在200~240℃的温度下具有不同的抗老化周期;在含有25%NaCl的基浆中,200℃下的黏度保持率130%;高温高压流变实验表明,含DT的钻井液在150~180℃的温度范围内具有恒流变,有利于稳定高温下钻井液的黏度和强度。High temperature resistant copolymer thickener(DT)was prepared by free radical polymerization using monomers such as N-vinylformamide(NVF),divinylbenzene(DVB),and acrylamide(AM)as the main raw materials.The structure of the polymer system was determined by FTIR and 1H NMR,and the thermal properties of the polymer system were analyzed by thermogravimetric analysis.Evaluated the viscosity changes of polymers before and after high-temperature aging at different temperatures.The results showed that the viscosity retention rate of the thickener DT in the base slurry at 240℃and 15%NaCl reached 87.1%;it has different anti-aging cycles at 200~240℃;in a slurry containing 25%NaCl,the viscosity retention rate reaches 130%at 200℃;high temperature and high pressure rheological tests have shown that drilling fluids containing DT exhibit constant rheological behavior within the temperature range of 150℃ to 180℃,which is beneficial for stabilizing the viscosity and strength of drilling fluids at high temperatures.

关 键 词：二乙烯苯 抗高温 增黏剂 抗老化 恒流变 

分 类 号：TQ1[化学工程] TQ31[石油与天然气工程—油气勘探] TE123