發(fā)布時(shí)間：2018-11-23 08:38

【摘要】：針對(duì)CO_2泡沫相與原油體系,基于Shan-Chen偽勢(shì)格子Boltzmann模型,耦合液-液、液-固間相互作用力與界面張力、液固潤(rùn)濕性之間的關(guān)系,對(duì)多孔介質(zhì)通道內(nèi)CO_2泡沫驅(qū)流動(dòng)規(guī)律進(jìn)行數(shù)值模擬,研究了雷諾數(shù)(Re)、毛細(xì)數(shù)(Ca)和壁面潤(rùn)濕性對(duì)非混相兩相驅(qū)替流動(dòng)中黏性指進(jìn)的影響。實(shí)驗(yàn)結(jié)果表明,隨Re和Ca的增大,黏性指進(jìn)顯著發(fā)展,驅(qū)替效率降低;壁面潤(rùn)濕時(shí),無(wú)明顯指進(jìn)現(xiàn)象,而當(dāng)壁面非潤(rùn)濕時(shí),黏性指進(jìn)較為明顯,且隨非潤(rùn)濕性程度的增加而愈發(fā)嚴(yán)重。在進(jìn)行兩相驅(qū)替流動(dòng)時(shí),需綜合物性及驅(qū)替流體與固壁的潤(rùn)濕情況,確定驅(qū)替流體的注入條件,以提高驅(qū)替效率。
[Abstract]:Based on the Shan-Chen pseudopotential lattice Boltzmann model, the relationship between the interaction force between liquid and liquid-solid and the interfacial tension, and the wettability of liquid and solid were studied in CO_2 foam phase and crude oil system. The flow characteristics of CO_2 foam flooding in porous media channels are numerically simulated. The effects of Reynolds number (Re), capillary number (Ca) and wall wettability on viscous fingering in immiscible two-phase displacement flow are studied. The experimental results show that with the increase of Re and Ca, the viscosity index develops significantly and the displacement efficiency decreases. When the wall wetting, there is no obvious finger ingress, but when the wall is not wetting, the viscous finger entry is more obvious, and with the increase of the non-wettability degree, it becomes more and more serious. In order to improve the displacement efficiency, it is necessary to synthesize the physical properties and the wetting conditions between the displacement fluid and the solid wall to determine the injection conditions of the displacement fluid when carrying out the two-phase displacement flow.
【作者單位】： 華東理工大學(xué)化工學(xué)院化學(xué)工程聯(lián)合國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【分類(lèi)號(hào)】：TE357.4
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本文編號(hào)：2350931