The development of steam chamber can be used to evaluate steam-assisted gravity drainage(SAGD) performance. The velocity of steam chamber expanding is the key parameter for evaluating the development of steam chamber....The development of steam chamber can be used to evaluate steam-assisted gravity drainage(SAGD) performance. The velocity of steam chamber expanding is the key parameter for evaluating the development of steam chamber. Based on SAGD technology theory and heat transfer theory, two calculation model methods, observation well temperature method and steam chamber edge method for estimating the horizontal expanding velocity of steam chamber, were presented. Through analyzing the monitoring data and numerical simulation results of a typical super heavy oil block developed by SAGD in Fengcheng oilfield in Xinjiang, NW China, the development patterns of steam chamber and temperature variation law in the observation well at different stages are determined. The observed temperature data was used to calculate steam chamber expanding velocity. The calculated chamber velocity at different time was applied to predict the temperature distribution of oil drainage zone at the edge of steam chamber and SAGD oil rate. The results indicate that temperature function of high temperature zone in the observation well temperature curve has a linear relationship with measuring depth.The characteristic section can be used to calculate key parameters such as the angle of the drainage interface, expanding edge and velocity of steam chamber. The field production data verify that the results of the two proposed methods of steam chamber growth are reliable and practical, which can provide theoretical support for the efficient development of SAGD.展开更多
针对湿法冶金过程中传统线性搅拌工艺导致的多相介质混合不均,混合过程能耗高等问题,提出了变速机械搅拌耦合蒸汽喷吹强化混合工艺,增加了搅拌釜内部的混沌流区域,打破原有的混合隔离区,从而提高搅拌反应釜内部的整体混合效率。通过数...针对湿法冶金过程中传统线性搅拌工艺导致的多相介质混合不均,混合过程能耗高等问题,提出了变速机械搅拌耦合蒸汽喷吹强化混合工艺,增加了搅拌釜内部的混沌流区域,打破原有的混合隔离区,从而提高搅拌反应釜内部的整体混合效率。通过数值模拟的方法,构建volume of fraction(VOF)多相流模型和Lee蒸汽冷凝相变模型,对多相混合过程进行量化。结果表明,变速机械搅拌耦合蒸汽喷吹条件下搅拌流场合速度提高了38.04%,湍动能强度提升了40.01%。展开更多
基金Supported by the China National Science and Technology Major Project(2016ZX05012-002)
文摘The development of steam chamber can be used to evaluate steam-assisted gravity drainage(SAGD) performance. The velocity of steam chamber expanding is the key parameter for evaluating the development of steam chamber. Based on SAGD technology theory and heat transfer theory, two calculation model methods, observation well temperature method and steam chamber edge method for estimating the horizontal expanding velocity of steam chamber, were presented. Through analyzing the monitoring data and numerical simulation results of a typical super heavy oil block developed by SAGD in Fengcheng oilfield in Xinjiang, NW China, the development patterns of steam chamber and temperature variation law in the observation well at different stages are determined. The observed temperature data was used to calculate steam chamber expanding velocity. The calculated chamber velocity at different time was applied to predict the temperature distribution of oil drainage zone at the edge of steam chamber and SAGD oil rate. The results indicate that temperature function of high temperature zone in the observation well temperature curve has a linear relationship with measuring depth.The characteristic section can be used to calculate key parameters such as the angle of the drainage interface, expanding edge and velocity of steam chamber. The field production data verify that the results of the two proposed methods of steam chamber growth are reliable and practical, which can provide theoretical support for the efficient development of SAGD.
文摘针对湿法冶金过程中传统线性搅拌工艺导致的多相介质混合不均,混合过程能耗高等问题,提出了变速机械搅拌耦合蒸汽喷吹强化混合工艺,增加了搅拌釜内部的混沌流区域,打破原有的混合隔离区,从而提高搅拌反应釜内部的整体混合效率。通过数值模拟的方法,构建volume of fraction(VOF)多相流模型和Lee蒸汽冷凝相变模型,对多相混合过程进行量化。结果表明,变速机械搅拌耦合蒸汽喷吹条件下搅拌流场合速度提高了38.04%,湍动能强度提升了40.01%。
