烟气-蒸汽辅助重力泄油模拟技术
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摘要
采用加拿大CMG软件公司的CMG-STARS模拟器,对烟气-蒸汽辅助重力泄油技术中烟气在蒸汽腔中的运移规律进行数值模拟。研究烟气注入后蒸汽腔的扩展速度及形态变化规律,分析含油饱和度、黏度、压力、温度的变化规律。在优化的注入参数下,对烟气-蒸汽辅助重力泄油和常规蒸汽辅助重力泄油(SAGD)技术的开发效果进行对比。研究结果表明:优化的蒸汽注入温度为280℃、注入速度为150 m3/d、烟气与蒸汽比为1.0。在优化的注入参数下,烟气-蒸汽辅助重力泄油比SAGD的累积采油量提高2.0 kt,采收率提高7%,油气比增加0.7%。烟气-蒸汽辅助重力泄油技术的开发效果更好。
By using the CMG-STARS simulator,the migration laws of flue gas in the steam chamber at flue gas-steam assisted gravity drainage technology were researched.The speed of the steam chamber expanding and the variation of the shape of the steam chamber were studied after flue gas injected.The change rules of oil saturation,viscosity,pressure and temperature were analyzed.The injection parameters of flue gas were optimized by reservoir numerical simulation.With the optimized injection parameters,the development effects of flue gas-steam assisted gravity drainage technology and conventional SAGD were compared.The results show that the optimized steam injection temperature is 280 ℃,the injection rate is 150 m3/d,and the flue gas and steam ratio is 1.0.With the optimized injection parameters,the cumulative oil production increases by 2.0 kt,and oil recovery efficiency increases by 7% using the flue gas-steam assisted gravity drainage technology compared with conventional SAGD.The development effect of flue gas-steam assisted gravity drainage technology is better.
By using the CMG-STARS simulator,the migration laws of flue gas in the steam chamber at flue gas-steam assisted gravity drainage technology were researched.The speed of the steam chamber expanding and the variation of the shape of the steam chamber were studied after flue gas injected.The change rules of oil saturation,viscosity,pressure and temperature were analyzed.The injection parameters of flue gas were optimized by reservoir numerical simulation.With the optimized injection parameters,the development effects of flue gas-steam assisted gravity drainage technology and conventional SAGD were compared.The results show that the optimized steam injection temperature is 280 ℃,the injection rate is 150 m3/d,and the flue gas and steam ratio is 1.0.With the optimized injection parameters,the cumulative oil production increases by 2.0 kt,and oil recovery efficiency increases by 7% using the flue gas-steam assisted gravity drainage technology compared with conventional SAGD.The development effect of flue gas-steam assisted gravity drainage technology is better.
引文
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