辽河油区砂岩稠油油藏蒸汽吞吐开采中储层变化的实验研究

Experiment study of sandstone reservoir variation during heavy oil production with steam huff & puff in Liaohe oil province.

方法根据砂岩稠油储层的基本特征，运用室内模拟实验、结合检查取心井及动态资料分析的方法，总结出储层变化规律。目的为有效地保护储层提供依据。结果建立了蒸汽吞吐开采中储层变化模式。结论蒸汽吞吐中储层变化受温度、ｐＨ值及溶液介质影响，使近井筒处储层物性变好。

Method\ Based on fundamental features of sandstone heavy oil reservoirs, reservoir variation regularities from indoors simulation experiments are summarized incorporating coring well and dynamic information analysis. Purpose\ To provide basis for reservoir effective protection. Result\ Reservoir variation modes during steam huff & puff production is established. Conclusion\ Reservoir variation in steam huff & puff is influenced by temperature, pH values and solvent media and this causes near well bore petrophysical property improved but that of far well bore shows deteriorating tendency. \;