长庆气田产能试井方法及压力恢复曲线分析

Normal Well Test Method and Pressure Buildup Test Analysis for the Gas Field in Changqing.

针对长庆气田低压、低产、低渗 ,非均质性强 ,压力恢复慢的特点 ,采用了产能试井方法和压力恢复试井方法 ,真实地反映了该气田的产能状况及流动特征。通过压力恢复曲线分析认为 ,长庆油田下古生界马家沟组气层分为均质型、双孔型、径向复合型、复合双孔型、均匀流垂直裂缝型及复杂曲线型 ;

According to the characteristics of the changing gas field, such as low pressure, low permeability, low production rate and high heterogeneity, the normal well test method and pressure buildup method are used to get the production state and the fluid flow characters. By using the pressure build up test data, the formation of Majiagou Zone can be identified as homogeneous, dual porosity, radical composite, dual porosity composite, uniform vertical fracture and complex type reservoir. The sand formation of the low Palaeozoic can be identified as vertical fracture type and partial penetrate type reservoir.