耐温抗盐聚合物溶液的黏弹性试验研究  

Laboratory Study on Viscoelastic Properties of Heat Resistance and Salt Tolerance Polymer Solution

作　　者：余晓玲[1] 王进涛[1] 吕红梅[1] 

机构地区：[1]中国石化江苏油田分公司石油工程技术研究院,江苏扬州225009

出　　处：《精细石油化工进展》2014年第6期1-4,27,共5页Advances in Fine Petrochemicals

摘　　要：通过动态剪切试验,研究了聚合物相对分子质量、矿化度、温度对耐温抗盐聚合物溶液黏弹性的影响。试验结果表明,相同浓度时,相对分子质量越大,动态曲线中相应的储存模量G'与损耗模量G″也越大;对同一种聚合物,浓度越大,聚合物分子缠结越严重,在一定的频率范围表现出较强的弹性效应;温度升高对黏弹性影响较小;矿化度越高,黏弹性越小;表面活性剂的加入对聚合物溶液黏弹性影响较小。室内驱油试验结果表明,聚合物的高黏弹性对采收率的提高有较大贡献,浓度为1 500 mg/L的PAM2溶液提高采收率为15.4%。The effects of molecular mass,salinity and temperature on the viscoelasticity of heat resistance and salt tolerance polymer solution were studied via theoretical research and dynamic shear test.The results of test have shown that the larger the relative molecular mass is,the larger storage modulus G＇ and loss modulus G″ are when the concentration is the same,that the larger the concentration of one same polymer is,the severer the molecular entanglement of the polymer is with strong elastic effect in a certain frequency range,that the effect of temperature rise on viscoelasticity is small,that the larger the salinity is,the smaller the viscoelasticity is,and that the addition of surfactant has little effect on the viscoelasticity of polymer solution.The results of laboratory oil flooding experiment have shown that high viscoelasticity of polymer contributes much to the increase of recovery efficiency and that the recovery efficiency is increased by 15.4% when the concentration of PAM2 solution is 1 500 mg / L.

关 键 词：聚合物溶液 黏弹性 影响因素 储能模量 损耗模量 驱油效率 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]