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luckyman0125

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[求助] 帮同学发的，她需要翻译两小段英文，每个段子奖励100BB （她说拒绝翻译软件的）

第一段：
This paper presents the results of imbibition tests using a reservoir crude oil and a reservoir brine solution with a high salinity and a suitable nanofluid that displaces crude oil from Berea sandstone (water-wet) and single glass capillaries. The IIT nanofluid is specially formulated to survive in a high salinity environment and is found to result in an efficiency of 50% for Berea sandstone compared to 17% using the brine alone at a reservoir temperature of 55oC. We also present a direct visual evidence of the underlying mechanism based on the structural disjoining pressure for the crude oil displacement using IIT nanofluid from the solid substrate in high salinity brine. These results aid our understanding of the role of the nanofluid in displacing crude oil from the rock especially in a high salinity environment containing Ca++ and Mg++ ions. Results are also reported using Berea sandstone and a nanofluid containing silica nanoparticles.



第二段：
An experimental study was performed in which hexadecane was displaced by a micellar nanofluid in a glass capillary. Experiments have shown that a thick film was formed on the capillary wall after hexadecane was displaced by the nanofluid. The thick hexadecane film is unstable, and over time it breaks and forms a thin film. Once the thick film ruptures, it retracts and forms an annular rim (liquid ridge) that collects liquid. As the volume of the annular rim increases over time, it forms a double concave meniscus across the capillary and dewetting stops. The thin film on the right side of the double concave meniscus then breaks and the contact angle increases. The process repeats until the droplets build up all along the capillary wall. Finally, the droplets are displaced from the capillary wall by the nanofluid and spherical droplets appear inside the capillary. This is a novel phenomenon, since we did not observe any film formation when we used a solution without micelles. The theoretical model based on the lubrication approximation using the capillary pressure gradient was developed to estimate the annular rim dewetting velocity. The predicted dewetting velocity is found to be in fair agreement with the experimentally measured value.
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1楼2014-08-19 10:57:30
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luckyman0125: 金币+100, ★★★很有帮助 2014-08-19 12:18:02
RXMCDM: 金币+1, 多谢应助！ 2014-08-19 12:18:04
第二段：

实验在一玻璃毛细管内进行，毛细管内用胶束纳米流体替代十六烷。实验已经表明，用纳米流体替代十六烷后可以在毛细管内壁形成一厚膜。该十六烷厚膜不稳定，随时间的推移会破碎而形成一薄膜。一旦厚膜破裂便缩回，并形成一个环形凸缘（液体脊），可收集液体。随时间的延长，环形凸缘的体积增加，从而在整个毛细管和去湿站形成一双凹弯月面。右侧双凹弯月面的薄膜断裂，使接触角度增加。这个过程会反复进行，直到液滴累积于整个毛细血管壁。最后，用纳米流体替换毛细管壁上的液滴，此时在毛细管内出现球形液滴。这是一种新的现象，因为用不含胶束的液体时并没有看到任何薄膜形成。利用毛细管压力梯度并基于润滑近似值建立了一种理论模型，用于估测环形凸缘的去湿速度。用该理论模型所预测的去湿速度实验测得的值非常一致。
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3楼2014-08-19 12:13:58
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luckyman0125: 金币+100, 翻译EPI+1, ★★★很有帮助 2014-08-19 12:17:54
第一段：
本文介绍了自吸实验的结果。该实验利用一库藏原油、含有高矿化度油藏盐溶液，以及一适当的纳米流体替换来自于贝雷砂岩（水湿）的原油和单玻璃毛细管进行。IIT纳米流体为专门配制，适用于高盐度的环境中。在55℃的油藏温度条件下，该纳米流体对贝雷砂岩的效率为50％，而只用盐水时仅为17％。我们还提出了一种直接的视觉证据，以揭示使用IIT纳米流体从高盐度盐水中的固体基质替换原油的结构分离压力机制。这些结果有助于我们理解纳米流体在从岩石，特别是在含有Ca++和Mg++的高盐度环境中替换原油中的作用。同时还报告了用贝雷砂岩和一种含硅纳米粒子的纳米流体得到的结果。
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2楼2014-08-19 11:34:17
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