凝析气藏气驱二维填砂物理模型实验研究

An experimental study of two-dimensional sand filling physical model for gas flooding in condensate gas reservoir

齐桂雪,李中超,刘平,邓瑞健,王燕丽,高志飞,陈华,景洪信

中国石化中原油田分公司勘探开发研究院，河南 濮阳 457001 中国石化中原油田分公司，河南 濮阳 457001 中国石化中原油田分公司濮东采油厂，河南 濮阳 457000 中国石化中原油田分公司油气加工技术服务中心，河南 濮阳 457000

Exploration and Development Research Institute, Zhongyuan Oilfield Company, SINOPEC, Puyang 457001, China Zhongyuan Oilfield Company, SINOPEC, Puyang 457001, China Pudong Oil Production Plant, Zhongyuan Oilfield Company, SINOPEC, Puyang 457000, China Oil and Gas Processing Technology Service Center, Zhongyuan Oilfield Company, SINOPEC, Puyang 457000, China

由于凝析气藏衰竭式开发过程中地层压力降到露点压力以下出现了反凝析污染区，气井产能下降无法实现有效开采。为了深入了解注气解堵和注气保压方法在衰竭中后期的应用效果，从二维填砂物理模型实验研究出发，论述了填砂的方法与标定、油气变化特征的监测，研究了带高渗条带的凝析气藏的注气解堵效果和气驱开发效果，采用实时动态监测系统对油气密度场进行了可视化表征。研究结果与认识为实际矿场应用提供了理论与实验数据支撑。

Due to the formation pressure dropped below the dew point pressure in the depletion development process of condensate gas reservoir, there appeared the retrograde condensate contaminated area， the gas well productivity declined cannot realize the effective exploitation. In order to further understanding application effect of  gas injection huff and puff and gas drive development in the middle and late stages of depletion， the physical model experiment of two-dimensional sand filling was carried out. The method and calibration of sand filling and the monitoring of oil and gas variation characteristics are discussed. The effect of gas injection for plugging relief and gas drive development in condensate gas reservoir with high permeability zone is studied. The density field of oil and gas is characterized visually by the real-time dynamic monitoring system. The research results provide theoretical and experimental data support for actual field application.

10.6056/dkyqt202202004