检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:李明凯 何龙 原红杰[1] 黄雪莉 李生林[1] 吴胜飞 LI Mingkai;HE Long;YUAN Hongjie;HUANG Xueli;LI Shenglin;WU Shengfei(College of Chemical Engineering,Xinjiang University,Urumqi,Xinjiang 830000,P R of China;Northwest Oilfield Company,Sinopec,Urumqi,Xinjiang 830000,P R of China)
机构地区:[1]新疆大学化工学院,新疆乌鲁木齐830000 [2]中国石化西北油田分公司,新疆乌鲁木齐830000
出 处:《油田化学》2022年第2期263-268,共6页Oilfield Chemistry
基 金:国家重大专项“塔里木盆地碳酸盐岩油气田提高采收率关键技术示范工程”(项目编号2016ZX05053)。
摘 要:为解决常规聚丙烯酰胺冻胶在高温高盐条件下易降解、脱水等问题,选用魔芋葡甘聚糖KGM、丙烯酰胺(AM)/2-丙烯酰胺-2-甲基丙磺酸(AMPS)二元聚合物P(AM/AMPS)为主剂,黄原胶为增强剂、乌洛托品、对苯二酚为交联剂制备了一种复合冻胶,通过基液黏度、成胶时间和成胶强度考察冻胶中各物质最优添加量,通过傅里叶红外变化光谱(FT-IR)、热重(TGA)对其进行表征,考察了该复合冻胶的成胶强度、耐温性能和封堵效果。研究结果表明,所制备的复合冻胶具有较强的耐温耐盐性能,成胶时间在120~180 min可调,能够满足温度为130℃、矿化度为210 g/L的苛刻油藏环境,并且能够保持长期稳定性。当P(AM/AMPS)加量为0.5%、KGM加量为0.5%、黄原胶加量为0.3%、乌洛托品加量为0.5%、对苯二酚加量为0.6%时,复合冻胶的成胶强度最大,成胶后的弹性模量达35.233 Pa,老化7 d后弹性模量逐渐增至71.377 Pa。该冻胶对岩心具有较强的封堵性能,注入量为1 PV时,该冻胶体系对渗透率约为800×10^(-3)μm^(2)岩心的封堵率可以达到99.11%。In order to solve the biodegradation,dehydration problem of ordinary polyacrylamide gel under the condition of high temperature and high salt,the composite gel was prepared with the konjac glucomannan(KGM)and poly(acrylamide/2-Acrylamido-2-methylpropane sulfonic acid),P(AM/AMPS)for short,as the main agent,xanthan gum as strengthening agent,methenamine and hydroquinone as crosslinking agent,the optimum amount was determined through investigation of the base fluid viscosity and gelling time.The structure of the composite gel was characterized by Fourier transform infrared spectroscopy(FT-IR)and thermogravimetry(TGA),and the gelling strength,temperature resistance and plugging effect of the composite gel were investigated.The results showed that the composite gel had strong temperature and salt resistance,and the gelling time could be adjusted within 120—180 min.It could meet the harsh reservoir environment with the temperature of 130℃and the salinity of 210 g/L,and could maintain long-term stability.When the P(AM/AMPS)dosage was 0.5%,KGM dosage was 0.5%,xanthan gum dosage was 0.3%,ullotropine dosage was 0.5%,hydroquinone dosage was 0.6%,the gelling strength of the composite gel was the largest,the elastic modulus after gelling was 35.233 Pa.After aging for 7 days,the elastic modulus gradually increased to 71.377 Pa.The composite gel had strong plugging performance.When the injection rate was 1 PV,the plugging rate of core with permeability of 800×10^(-3)μm^(2) could reach up to 99.11%.
关 键 词:复合冻胶 魔芋葡甘聚糖 堵剂 耐温抗盐 提高采收率
分 类 号:TE358.3[石油与天然气工程—油气田开发工程]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:3.21.126.72