涩北一号气田出水特征分析及排水采气技术研究

Study on the characteristics of water production and deliquification technique for Sebei Yihao gasfield

针对涩北一号气田日益严重的出水现状,从分析出水历史入手,系统的分析了涩北一号气田平面和纵向上的出水分布特征,掌握了边水推进的现状。针对涩北一号气田的出水特征及地质特征,从分析积液原因,准确计算气井临界流量出发,优选了动能因子模型作为涩北一号气田的临界流量计算模型,并优化了参数下限值;结合涩北气田的生产现状及各中排水采气工艺的适应性和经济性,优选了适合涩北一号气田的主体排水采气方式;建立了排水采气选择模式,为气井排水采气方式选择提供了一整套的分析流程,现场使用效果良好。

To better understand the characteristics of water production of Sebei Yihao gas field, the paper systematically analysed the water production history and the distribution characteristics of water product from plane and longitudinal of gas field. Through these ana- lyzes, we knew the location of the waterline of the edge water. Base on the characteristics of water production and geological features of Sebei Yihao gas field, the paper analysed the reasons of liquid loading and selected kinetic energy factor model for the critical flow rate calculation model. The paper has also investigated the technical applicability and economic viability of seven kinds deliquification techniques. According the analytical result, we select- ed the foam scrubbing as the main deliquification technique of Sebei Yihao gas field. To help engineer select deliquification technique for various gas wells, the papar has drawn aflow chart. All these techniques have applied to the gas field with good effect.