疏松砂岩气藏低压低产井开发对策研究

Development Countermeasures for Low Pressure and Low Production Wells in Unconsolidated Sandstone Gas Reservoirs

随着疏松砂岩气藏的开发,低压低产井的逐渐增多导致气藏储量动用失衡,影响整个气田开发方案的实施,降低气藏的最终采收率。为了保证气田的稳产,以典型的疏松砂岩气藏涩北气田为背景,在掌握气藏储层特征的基础上,通过气井生产特征的分析对低压低产井进行了分类,结合气井低压低产形成的原因,针对性地提出了不同类型低压低产井的开发对策。现场应用效果表明,采取相应的开发对策后气井产量增大,能够保证气田稳产,提高气藏的最终采收率。

With the development of loose sandstone gas reservoirs,low production and low pressure gas wells have increased gradually,it caused reserves imbalance in gas reservoirs,affected the implementation of development plan,reduced the ultimate gas recovery.To ensure the stable production in the gas field,a typical loose sandstone gas reservoir in Sebei Gas Field was taken as the background of study,on the basis of reservoir characteristics and the analysis of gas well production characteristics,the low production and low pressure gas wells were classified.Then combined with the causes of formation of low pressure and low production wells,the development countermeasures for different types of low production wells are put forward.Field application effect shows that corresponding development countermeasures can improve the gas well production,guarantee stable gas production,improve the ultimate recovery of gas reservoir.