李莺歌

副教授

副教授 硕士生导师

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所在单位:电子教研室

学历:博士研究生

办公地点:青岛市崂山区松岭路99号 青岛科技大学 自动化与电子工程学院

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Experiments on CO<inf>2</inf>foam seepage characteristics in porous media

发布时间:2023-10-19 点击次数:

关键字:Carbon dioxide;Critical micelle concentration - Drops - Floods - Mud logging - Porous materials - Pressure drop - Seepage - Surface active agents;CT technology - Displacement efficiency - Displacement process - Homogeneous porous media - Seepage characteristics - Seepage pressure - Surfactant concentrations - Water saturations
摘要:Simulative experiments were carried out for CO<inf>2</inf>foam flooding process in homogeneous porous media prepared with the sand packing method, and the CO<inf>2</inf>foam seepage characteristics in porous media were studied with CT technology. CO<inf>2</inf>foam flooding experiments were carried out under different packing sand sizes, different surfactant concentrations and different gas-liquid ratios. CT technology was employed to visualize the displacement process and to obtain the water saturation data along the sample, and the pressure distribution in the sample during the foam seepage process was measured at the same time. Experimental results show that, CO<inf>2</inf>foam flooding has higher pressure drop and lower water saturation entrance effect in the porous media with lower average grain sizes; when surfactant concentrations are higher than CMC (Critical Micelle Concentration), the generated foam is stable, without showing obvious difference for the foam displacement efficiency in the sample, and water saturation entrance effect gradually decreases with increase of surfactant concentrations; improving gas-liquid ratio can lead to higher foam seepage pressure drop, but has little effect on residue water saturation after foam displacement. © 2016, The Editorial Board of Petroleum Exploration and Development. All right reserved.
卷号:43
期号:3
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