中文摘要：

针对SAGD采出液乳化程度高、成分复杂的问题,该文采用高频高压脉冲方法对采出液进行试验研究,系统分析电压幅值、频率、占空比、脱水时间对脱水性能的影响规律。试验表明：电压幅值增加,聚结破乳效果提升,脱水功率随之升高,电压幅值过大时,脱水率和功率呈现降低的趋势;频率过大时,脱水率大幅降低,短路的出现使得功率大幅增长;占空比增加,极化变形程度增加,脱水率、脱水功率随之增加;占空比超过0.5,出现过度极化和电分散;2.5h以后,极化作用力显著减少,脱水率缓慢增大,3h以后呈现平稳的趋势。SAGD电脱最佳操作条件：电压幅值5.5k V,频率4k Hz,占空比0.5,时间3h。本文为特超稠油采出液的高效脱水奠定了基础。

英文摘要：

To deal with the problem of high emulsification degree and complex compositionof SAGD produced liquid, adopting the method of high frequency and high voltage pulse, the produced liquid was studied, then the effect of voltage amplitude, fre-quency, duty ratio and dewatering time on the properties of dehydration was systematically analyzed. The experiment shows that with the dewatering voltage increasing, the effect of coalescence and demulsificationimproves, the energy consumption simultane-ously increases. Too highvoltage results in the tendency of a decrease in the dewatering efficiency and the consumption. Exorbi- tantfrequency leads to the remarkable drop of the dewatering efficiency and an obvious increase of the energy consumption be-cause of the short circuit. The higher the duty ratio, the bigger the degree of polarization deformation, the higher the dewatering efficiency and the consumption; When the duty ratio is higher than 0. 5 , excessive polarization and electro dispersion appear. The dewatering efficiency has a slowly increase because of the sharp drop of the polarization force when the dewatering time rea-ches 2. 5h,while reachinga plateau at 3h. The optimum condition of SAGD＇s electrostatic dewatering process： the voltage 5.5 kV, the frequency 4kHz, the duty ratio 0. 5 , the dewatering time 3h. This paper lays foundationfor efficient dehydration of pro-duced liquid.