温度及剪切速率对延长原油粘度的影响规律研究_高海港.pdf

2200920092009200920092009200920092009009年年年年年年年年年年37373737373737373737 卷第卷第卷第卷第卷第卷第卷第卷第卷第卷第4444444444 期期期期期期期期期期 广州化工广州化工广州化工广州化工广州化工广州化工广州化工广州化工广州化工广州化工 ·111 · 温度及剪切速率对延长原油粘度的影响规律研究 1 1 1 2 高海港 ，蒋尔梁 ，王煦 ，魏登峰 （1 西南石油大学材料科学与工程学院，四川 成都 610500； 2 延长油田股份有限公司七里村采油厂，陕西 延安 717100） 摘要：延长原油为高含蜡原油，原油中石蜡在输送过程中受温度及剪切力的影响较大。因此，采用流变学测试与分析方法对温度 及剪切速率对粘度的影响规律进行了研究。研究结果表明：延长原油的凝点为26 ℃，粘度在温度由28 ℃降至23 ℃时由96mPa ·s 激增 - 1 至192mPa·s，提高剪切速率可较大幅度的降低原油粘度但增加到100 S 后对粘度的影响趋于稳定。 关键词：延长原油；石蜡；凝点；粘度 Study on the Law of the Influence of Temperature and Shear Rate on Viscosity of Yanchang Crude Oil 1 1 1 2 GAO Hai-gang , JIANG Er-liang , WANG Xu , WEI Deng-feng （1 School of Material Science and Engineering, Southwest Petroleum University, Sichuan Chengdu 610500; 2 Shaanxi Yanchang Petroleum(Group) Co., Ltd., Shaanxi Yanan 717100, China） Abstract: The viscosity of waxy crude oil from Yanchang was impacted by waxy deposition greatly. This process was influenced by temperature and shear rate. Through measurement and analysis of rheology theory, the influence of the tem- perature and shear rate on the viscosity was studied. The result showed that the pour point of Yanchang crude oil was 26 ℃, the viscosity increased from 96mpa ·s to 192mpa ·s with temperature decreasing from 28℃ to 23 ℃. It also indicated that the viscosity of oil decreased with the increasing of shear rate up to 100S- 1. Key words: oil from Yanchang; paraffin; wax freezing point; viscosity 随着延长油田开采历史