凝析气藏管流与地层渗流耦合研究

The coupling computation and test optimization of wellbore pipe-flow and stratum filtering flow in condensate reservoir

凝析气藏的测试和生产系统受储层、井筒、地面管线3个子系统的影响。目前人们对于反凝析对生产的影响还缺乏足够的重视,仍然采用类似于干气藏方法来研究凝析气藏,其结果常常导致测试和工作制度制定不合理,产能预测偏大,生产陷入低产、低效的困境。作者以反凝析对凝析气藏的生产动态造成的影响为前提,通过建立凝析气藏多相流井筒管流与地层渗流耦合计算模型,改变了用类似于干气藏方法来研究凝析气藏,为凝析气井测试和生产单井优化分析提供了更可靠的理论支持。

Both the testing and production system of the condensate reservoir are influenced by reservoir, wellbore and surface pipeline. At present, the lack of attention on the production effected by retrograde condensation and old techniques used in studying condensate reservoir resulted in irrational testing and work regulations, low and inefficient production. Based on the accurate analysis of the influence on the production of condensate reservoir caused by retrograde condensation, the method for studying condensate reservoir was changed according to the coupling computation model established to the muhiphase wellbore pipe-flow and stratum filtering flow, which provides theory support for the testing and single well optimization analysis.