Micro-tomography of oil recovery dynamics at a pore scale

孔隙尺度石油采收动态的显微层析成像

• 批准号: 23656562
• 负责人: SUEKANE TETSUYA
• 金额: $ 2.5万
• 依托单位: Tokyo Institute of Technology (2012-2013)The University of Tokushima (2011)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23656562/
• 关键词: 多孔質; 原油回収; 混相流; 空隙スケール; X線CT; コア分析; 格子ボルツマン法; 二相流; トラップ; 流動場; EOR; ポアスケール; サーファクタント

Crude oil production from reservoirs involves multiphase flow in porous media. Recent rapid development in micro-focused X-ray CT scanners allows us to visualize and observe the migration of the interfaces between phases at a pore scale. In this study, we visualize two-phase flows of oil and water which is governed by the capillarity and wettability at a pore scale resolution. First the snap-off process that disconnects oil blobs from the continuum to be trapped in a porous medium by capillarity and reduces oil recovery. Next the flow field around the trapped oil blobs is visualized. Water is flowing even at the pores just proximate to trapped oil blobs. However, the stagnant water films which thickness is lower than the pore scale separate oil blob and flowing water. We developed a numerical simulation code of two phase flow in porous media based on the lattice Boltzmann method. Numerical simulations were carried out for porous structures which were obtained by X-ray CT.

油藏的原油生产涉及多孔介质中的多相流。最近微聚焦 X 射线 CT 扫描仪的快速发展使我们能够在孔隙尺度上可视化和观察相之间界面的迁移。在这项研究中，我们在孔隙尺度分辨率下可视化了油和水的两相流，该两相流由毛细管作用和润湿性控制。首先是折断过程，将油滴从连续体中分离出来，通过毛细管作用捕获在多孔介质中，并降低石油采收率。接下来，捕获的油滴周围的流场被可视化。即使在紧邻被困油滴的毛孔处，水也会流动。然而，厚度小于孔隙尺度的静止水膜将油团和流动水分开。我们开发了基于格子玻尔兹曼方法的多孔介质中两相流的数值模拟代码。对通过X射线CT获得的多孔结构进行了数值模拟。

项目成果

Three-dimensional imaging of pore-scale waterflooding phenomena in water-wet and oil-wet porous medium

亲水、亲油多孔介质孔隙尺度注水现象三维成像

• DOI: 10.4236/jfcmv.2014.22005
• 发表时间: 2014
• 期刊: Journal of Flow Control, Measurement & Visualization
• 作者: Setiawan;A.;Suekane;T.;Deguchi;Y.;Kusano;K
• 通讯作者: K

Visualization of pore-level phenomena in packed glass beads during waterflooding

水驱过程中填充玻璃珠孔隙水平现象的可视化

• 发表时间: 2013
• 作者: Arief Setiawan;Suekane;T.
• 通讯作者: T.

Pore-scale observation of surfactant flooding for weakly water-wet porous media – effect of gas injection to improve oil recovery

弱水湿多孔介质表面活性剂驱的孔隙尺度观察——注气提高采收率的效果

• 发表时间: 2013
• 作者: Suekane;T.;Tezuka;R.
• 通讯作者: R.

Direct observation of oil trapping mechanism

直接观察捕油机理

• 发表时间: 2011
• 作者: Setiawan;A.;Suekane;T
• 通讯作者: T

原油増進回収過程における多相流の基礎的研究

原油强化采收过程多相流基础研究

• 发表时间: 2012
• 作者: 手塚 涼太;末包 哲也;出口 祥啓;草野 剛嗣
• 通讯作者: 草野 剛嗣