Abstract: Reservoir pressure will drop greatly with the increment of steam injection cycle. Meanwhile production effect of huff and puff will become worse. Feasibility of steam flooding for shallow extraheavy oil reservoir was researched through the analysis of reservoir temperature,pressure and oil saturation after several steam injection cycles. Production performance of steam flooding was predicted based on parameter optimization. Meanwhile economic evaluation was discussed. The results show that steam flooding for extraheavy oil reservoir is technically and economically feasible.

Key words: Steam flooding,     ,  Extraheavy oil reservoir,     ,  Numerical simulation,     ,  Huff and puff

摘要： 随着超稠油油藏蒸汽吞吐注汽周期的增加, 地层压力大幅下降, 开采效果变差。在分析油藏温度、 压 力和饱和度“ 三场”的基础上, 论证油藏蒸汽吞吐转蒸汽驱进一步提高采收率的可行性。并通过油藏数值模拟方法 确定该区块蒸汽驱最优注采参数, 对最优参数预测结果进行经济评价。研究表明, 蒸汽驱在技术和经济上都具备可 行性, 可以作为蒸汽吞吐后续接替技术, 进一步提高稠油油藏采收率。

关键词: 蒸汽驱,    ,  , 超稠油油藏,   ,  , 油藏数值模拟,    ,  , 蒸汽吞吐