R油藏改建地下储气库单井注采能力分析

单井注采能力分析是改建地下储气库优化单井产能参数的一项重要研究内容。以R油藏建库为研究对象，采用节点分析方法，模拟计算管流动态。根据协调点、冲蚀临界流量、携液临界流量以及地层压力、地层破裂压力和地面压缩机额定功率的边界限制分别预测了不同油管尺寸的采气能力和注气能力。为合理选择完井油管尺寸和在注采过程中控制井口压力提供了参考。研究结果表明：R油藏改建库采用国际上目前普遍采用的184.2mm油管，其采气能力在185×10⁴～390×10⁴m³/d，注气能力在25×10⁴～295×10⁴m³/d。

SINGLE WELL INJECTION/RECOVERY CAPABILITY OF AN UNDERGROUND GAS STORAGE REBUILT FROM R OIL RESERVOIR

After selecting location for underground gas storage which is rebuilt from oil reservoir, and for maximizing the singlewell production, it is necessary to analyze the reasonable singlewell injection/recovery capability. On the basis of actual conditions of a reservoir and the nodal analysis method, through numerical simulation, the conduitflow dynamicstate is calculated. According to coordinate points, critical erosion flow rate and critical liquid carrying flow rate, the reasonable recovery capability of different size tubing is calculated. According to coordinate points, critical erosion flow rate, formation pressure, formation cracking pressure and compressor normal rated power, the reasonable injection capability of different size tubing is calculated. This research provides some references for how to select tubing size and how to control wellhead pressure while injecting and recovering. The research indicates that the underground gas storage rebuilt from R oil reservoir adopts 184.2mm tubing which is widely used internationally, the gas recovery is 185×10⁴～390×10⁴m³/d, gas injection capacity is25×10⁴～295×10⁴m³/d