The displacement experiments were made by using artificial core, natural outcrop sandstone core, natural sandstone core in oil field and simulated oil.

使用人造岩心、天然露头砂岩岩心，天然油田砂岩岩心及模拟油进行了驱替实验。

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Based on numeral simulation result of combination flooding composing, oil displacement experiments are carried out in different penetration ratio natural core and artificial core.

并在数模优化组合驱段塞构成的基础上，对不同渗透率的天然岩心与人造岩心进行了驱油实验。

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The effect of surface wettability of porous media on the plugging properties of LPS was studied through the ground glass model, quartz sand-packed tube and artificial core plugging experiments.

采用毛玻璃模型、填充砂管和人造岩心封堵实验，研究了多孔介质的表面润湿性对交联聚合物溶液（LPS）封堵性能的影响。

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The core issue involves a trading strategy that industry veterans say has actually been globally commonplace: an artificial depression of next-day physical energy prices in order to increase the value of separate financial contracts.

FORBES: Bigger than Libor: Major Banks at Risk for Energy Manipulation