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以蒸汽吞吐复合油层模式为基础,建立了非等温渗流条件下的油井相对采油指数瞬态递减模式,分析得知:加热范围、加热区温度和蒸汽吞吐解堵作用是影响流入动态的主要因素;通过计算拟稳态条件下复合油层油气两相渗流动态,得到了非等温溶解气驱流入动态关系,其综合流入动态特征涵盖了等温渗流条件下的流入动态,因此也适用于常规生产井的产能预测。
Based on the pattern of steam huff and puff, the transient decreasing pattern of relative oil recovery index under non-isothermal seepage was established. The analysis shows that the heating area, the heating zone temperature and the steam plugging effect are the main factors affecting the inflow dynamic. The dynamic relationship between non-isothermal dissolved gas flooding and flooding is obtained by computing the dynamic state of oil-gas two-phase seepage in the composite reservoir under quasi-steady state conditions. The dynamic characteristics of the integrated inflow cover the inflow dynamics under isothermal seepage conditions and therefore also apply to conventional production wells prediction.