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首页> 外文期刊>Journal of Petroleum Science & Engineering >Experimental study of dispersed oil-water flow in a horizontal pipe with enhanced inlet mixing, Part 1: Flow patterns, phase distributions and pressure gradients
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Experimental study of dispersed oil-water flow in a horizontal pipe with enhanced inlet mixing, Part 1: Flow patterns, phase distributions and pressure gradients

机译：具有增强的入口混合功能的水平管中分散油水流的实验研究，第1部分：流动模式，相分布和压力梯度

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The study demonstrates how a disturbance of the flow can affect the pressure gradient and further needs a considerable development length to recover. This is of importance for experimental studies as well as industrial applications. Oil-water experiments were conducted in the Well Flow Loop at the Institute for Energy Technology, Norway. Three different mineral oils (120 mPa s, 60 mPa s and 35 mPa s) and tap water were used. Input water fractions from 0% to 100% and mixture velocities up to 1.1 mks were tested. A static mixer was installed at the test section inlet to introduce mixing. Comparison with non-premixed data showed that onset of dispersion shifts towards lower mixture velocities when the inlet disturbs the flow. This will also have an impact on the pressure gradient. At low mixture velocities when the flow was semi-dispersed, the influence seems to be most serious. Formation of a dense packed droplet layer is assumed to be a major reason for an increasing pressure gradient. Comparing pressure gradient measurements along the pipe it was found that the development length of the flow was still not reached 200 diameters downstream of the inlet mixer. (c) 2016 Elsevier B.V. All rights reserved.
机译：该研究表明，流量扰动如何影响压力梯度，并且还需要相当长的开发时间才能恢复。这对于实验研究以及工业应用都是重要的。油水实验是在挪威能源技术研究所的井流环路中进行的。使用了三种不同的矿物油（120 mPa s，60 mPa s和35 mPa s）和自来水。测试了从0％到100％的输入水馏分和高达1.1 mks的混合物速度。将静态混合器安装在测试部分的入口以引入混合。与未预混合数据的比较表明，当入口干扰流动时，分散体开始向较低的混合速度移动。这也将对压力梯度产生影响。在低流速下，当流体半分散时，影响似乎最为严重。认为形成致密的液滴层是压力梯度增加的主要原因。比较沿管道的压力梯度测量结果，发现流的展开长度仍未达到入口混合器下游200个直径。 （c）2016 Elsevier B.V.保留所有权利。

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