大涝坝凝析气藏注气驱相态模拟
Journal of Green Science and Technology(2013)
Abstract
指出了大涝坝高含凝析油凝析气藏衰竭式开发过程中,当地层压力下降至低于露点压力,地层出现反凝析现象,特别是近井地带压降漏斗的存在,析出的凝析油更多,严重污染了井筒周围的储层,造成渗流阻力增大,致使气井产能递减快。结合数值模拟研究表明:注气能有效降低凝析气藏反凝析油的析出,改善其开发效果,为注气提高采收率提供理论依据。
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Key words
miscibility pressure,retrograde condensation gas,injection,Nitrogen
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