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气井关井耦合瞬态模拟研究

李丽,龙群芬,疏壮志,曹梦

CHINA SCIENCE AND TECHNOLOGY ACHIEVEMENTS（2009）

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Abstract
气井关井过程中井筒流体的流动为不稳定流动,井筒压力、温度及气液相态等随井深和时间不断发生变化.产液气井、凝析气井、尤其储层物性好的高产气井关井后,采用常规的静气柱计算压力温度分布往往会出现较大偏差.本文通过对井筒瞬态流动规律和气井关井试井模型进行研究,建立了基于井筒和地层流动耦合的气井关井瞬态模型,并对某气井关井后压力、温度进行计算,结果表明该模型能较为准确地描述气井关井不稳定流动,有效预测关井后井筒温度压力等参数.
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