【作者】 王虎； 谢娟； 段明；

【Author】 Wang Hu1,2,Xie Juan2,Duan Ming1,3 (1 State key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University;2 College of Materials Science and Engineering,Southwest Petroleum University,College of Chemistry and Chemical Engineering,Southwest Petroleum University Chengdu,610500)

【机构】 油气藏与地质开发国家重点实验室(西南石油大学)； 西南石油大学材料科学与工程学院； 西南石油大学化学与化工学院；

【摘要】 <正>石英晶体微天平(EQCM)技术可以快速而准确地评价油田采出水的结垢趋势。其主要原理是利用恒电位法,在阴极(石英晶片)上沉积碳酸钙。本文采用EQCM技术研究了油田采出水中阻垢剂和聚合物之间的协同作用。研究表明,溶液中仅含阻垢剂或聚合物中的一种组分时,阻垢效果不更多还原

【Abstract】 Electrochemical quartz crystal microbalance(EQCM)technique can be used in evaluating scaling tendency in oil-field brine rapidly and accurately.Potentiostatic measurements were introduced to deposit scale on cathode(Quartz wafer).In this paper,the synergetic effect of scale inhibitor and polymer on scaling in oil-field brine was investigated. It is shown that the scale inhibition capacity is not very notable when there is only one constituent in present.The synergetic effect is evident when both inhibitor and polymer present.The synergetic effect is in relation with the concentration of the both constituents. The best effect occurs in the polymer concentration of 50ppm and scale inhibitor concentration of 60ppm.When adding certain amount of scale inhibitor in different time to the brine in the presence of 50ppm polymer,few amount of inhibitor failed to generate apparent synergetic effect and great amount of that can inhibit scaling by way of chelating and dispersion effects.Meanwhile,some existed scale could be re-dispersed into the brine.更多还原